A compressor (22) has a male rotor (52) a female rotor (54) and a housing (50). The housing has a first bore (114) and a second bore (116) respectively accommodating portions of the male rotor and the female rotor. The housing has an inlet (26) an outlet (28) an economizer port (150) along at least one of the first ...

A condenser/accumulator (60) has a shell (62). A coolant flowpath extends from a coolant ( 144) inlet to a coolant outlet ( 1 46). An upper tube bundle (68) is within the shell a first branch of the coolant flowpath passing through tubes of the upper tube bundle. A lower tube bundle (70) is within the shell a second...

A heal pump system (10) includes a compressor (20), a reversing valve (30), an outdoor heat exchanger (40) and an indoor heat exchanger (50) coupled via refrigerant lines (35, 45, 55) in a conventional refrigeration circuit, a refrigerant to liquid heat exchanger (60), a refrigerant to liquid heat exchanger bypass v...

A compressor (20) has an unloading slide valve (100). The valve has a valve element (102) having a range between a fir condition and a second condition, the second condition being unleaded relative to the first condition. A piston (124) is in a cylinder (128) and mechanically coupled to the valve element. A control ...

A heat pump system (10) includes a compressor (20), a reversing valve (30), an outdoor heat exchanger (40) and an indoor heat exchanger (50) coupled via refrigerant lines (35, 45) in a conventional refrigeration circuit, and a refrigerant-to-water heat exchanger (60). In the air cooling with water heating mode, the ...

A safety automation system (20) for an occupiable structure includes a microphone (54) configured to receive an audible signature (50) and output an audible signature signal. A computing management system (40) of the automation system is configured to receive the audible signature signal and output a command signal....

A mounting bracket is configured to isolate a drive module of a compression type chiller assembly from vibrations. The mounting bracket includes a bracket plate configured to be attached to a chiller assembly component adjacent to the drive module, a mounting plate transversely attached to the bracket plate and conf...

An air conditioning system includes a supplemental storage container that allows for transferring refrigerant into or out of an air conditioning or refrigeration system based upon different operating conditions. In one example, a controller consols the operation of valves that selectively couple the storage containe...

A screw machine (10) has a rotor housing (12) defining overlapping bores (12-1, 12-2). Female rotor (14) is iocated in bore (12-1) and male rotor (16) is located in bore (12-2). A wear resistant coating is deposited on the tips (14-1, 16-1) of the rotors. A conformable coating is deposited on the valleys (14-2, 16-2...

A bus rooftop air conditioning system is made up of one or more self-contained modules having one or more evaporator sections and one or more condenser sections, with each extending transversely across the width of the bus, and with the evaporator sections fluidly communicating with both a common return air opening ...

A method for controlling temperature pulldown of an enclosure with a refrigeration system having a compressor, a heat rejecting heat exchanger, an expansion valve, and an evaporator comprises circulating a refrigerant through the refrigeration system, sensing a parameter of the enclosure, determining a desired evapo...

The interior space within a refrigeration unit cassette associated with a refrigerated merchandiser is divided by a division wall (68) into a first section in air flow communication with interior product display space, and a second section isolated from said first section and in fluid flow communication with the env...

A multi-stage compressor unit for a refrigeration system configured to circulate a refrigerant comprises a first compressor sub-unit having a first stage and a second stage, and a second compressor sub-unit in parallel with the first compressor sub-unit and having a first stage. The first and second stages of the fi...

A heat pump system (10) includes a compressor (20), a reversing valve (30), an outdoor heat exchanger (40) and an indoor heat exchanger (50) coupled via refrigerant lines (35, 45, 55) in a conventional refrigeration circuit, and a refrigerant-to-water heat exchanger (60). In the air cooling with water heating mode, ...

Apparatus for cooling the power electronics components of a variable frequency drive for the motor of a refrigerant system compressor. The components are mounted upon a heat sink and refrigerant from the system condenser is passed through the heat sink by means of a flow line and returned to the low pressure side of...

A refrigerated merchandiser (10) includes a caoi-net (20) having a top wall (22), a lower wall (24), a rear wall (34), and side walls (36, 38) defining an interior product display space (100) housing a product (110) in a refrigerated environment for consumer selection. A refrigeration unit (50) is disposed in operat...

A compressor (20) comprises: a housing assembly (22) having a plurality of ports including a suction port (24) and a discharge port (26); a male rotor (30) mounted for rotation about an axis (500); a female rotor (32) enmeshed with the male rotor and mounted in the housing for rotation about an axis (502) for drawin...

A safety automation system (20) for an occupiable structure and method of operation includes a plurality of detection devices (30) to facilitate the detection of a hazard condition and output a hazard detected signal to a computing management system (44) that may be a cloud computing system. The management system in...

In a two-stage absorption heating and cooling system with refrigerant storage apparatus for converting from a cooling to a heating mode of operation, provision is made to position the refrigerant storage tank in a location vertically above the condenser, and the tank is filled with refrigerant without the use of a p...

A refrigerating cabinet (1) comprises at least one goods presentation and air circulation space (2) a refrigeration cycle for cooling the at least one goods presentation and air circulation space (2) and at least one drain conduit (36; 42) configured for draining condensed water which is produced when the refrigerat...

The invention involves a frame and a refrigerating apparatus that uses the frame the frame is composed by at least one frame component wherein a VIP material is placed inside of the at least one frame component. The frame is capable of preventing the accumulation of water condensation along the frame has both a bett...

A free-draining heat exchanger includes a first heat exchange tube, a second heat exchange tube spaced from and generally parallel to the first heat exchange tube, and a fin contacting the first and second heat exchange tubes. The fin includes a louver and at least one drainage enhancement feature for promoting remo...

A heat exchanger includes a plurality of tubes, each tube configured for a flow of fluid therethrough and one or more fins located between adjacent tubes of the plurality of tubes. The one or more fins are spaced by a fin pitch (Fp) and are configured to improve thermal energy transfer between the plurality of tubes...

A process for controlling operation of a heating, ventilation and air conditioning system broadly comprises providing a heating, ventilation and air conditioning system having an evaporator, a condenser, a compressor having an inlet and an outlet, and at least one flow control device; measuring a performance paramet...

A system and/or method for detecting an occupancy of an elevator cab of an elevator to generate occupancy information is provided. The system and/or method further generates anonymized occupancy information based on the occupancy information and provides the anonymized occupancy information to enable the occupancy o...

An electronic magnetic bearing fault tolerant drive module includes a first plurality of switching elements and a second plurality of switching elements. At least one winding is interposed between the first plurality of switching elements and the second plurality of switching elements. The first and second switching...

A portable electronic data logging device for tracking information in a supply chain comprises electronics, a tethered communication interface and a housing. The electronics sense an environmental input and store data relating to the environmental input over a timescale. The tethered communication interface permits ...

A heat exchanger is provided including a first manifold a second manifold and a plurality of heat exchange tube segments fluidly coupling the first and second manifold. The heat exchange tube segments include a bend defining a first slab and a second arranged at an angle to one another. Each of the heat exchange tub...

A clutch bearing (34) for a transportation refrigeration unit includes one or more rolling elements (38) supportive of one or more components of an electromagnetic clutch for a transportation refrigeration unit and a plurality of bearing races (36) configured to retain the one or more rolling elements. The bearing r...

The performance of a transport refrigeration system (12) having a transport refrigeration unit powered by a diesel engine is optimized by matching a capacity output of the transport refrigeration unit to an available shaft power of the diesel engine. The power consumption of the transport refrigeration may be contro...

A refrigerant system includes at least one compressor that compresses refrigerant and delivers it downstream to a heat rejection heat exchanger. The heat rejection heat exchanger is a microchannel heat exchanger. Refrigerant passes from the heat rejection heat exchanger downstream to an expansion device, from the ex...

A method of brazing an assembly ( 202 ) having at least two aluminum workpieces coupled at a joint includes applying a flame to the joint of the aluminum workpieces; monitoring the flame color; and upon detecting a change in the flame color maintaining a temperature at the joint.

A system and method of analyzing transportation data includes receiving a transportation data set including transportation data corresponding to at least one item. A portion of the transportation data is converted into an event string, which includes a plurality of event symbols corresponding to a plurality of trans...

A brazing ring is provided and includes ring material including an aluminum zinc silicon alloy having a first melting point and flux material contained within the ring material having a second melting point which is substantially lower than the first melting point the ring material being formed such that the flux ma...

A discharge pipe 12A for connecting a compressor 16 with a condenser 18 in a vapor-compression system 10 comprises an intake segment 38, a muffler 14, a splitter segment 39 and first and second discharge segments 44A, 44B. The intake segment 38 is configured to connect to a discharge port 36 of the compressor 16 and...

A large tonnage water chiller 60 is disclosed that includes a drive motor 11a connected to a proximal drive shaft 18, 18a, 18b. The proximal drive shaft 18 is connected to a continuous variable transmission (CVT) 15, 15a, 15b. The CVT 15, 15a, 15b is connected to an output drive shaft 19, 19a, 19b. The output drive ...

A screw compressor 12 for use in a chiller assembly 10 includes cooperating screw rotors 22, 24, 26 configured to increase the pressure of a vaporized refrigerant flowing through the compressor 12, a venturi tube 50 arranged in a flow path of the refrigerant in the compressor 12 downstream of the rotors 22, 24, 26, ...

A Combined vapor compression and vapor expansion system uses a common refrigerant which enables a supercritical high pressure portion and a sub-critical low pressure portion of the vapor expansion circuit. Provision is made to combine the refrigerant flow from the vapor expander and from the compressor discharge. Th...

A compression machine includes a refrigerant condenser, an expansion device, a refrigerant evaporator, a first compressor and a second compressor. Each compressor is arranged to receive lower pressure refrigerant vapor from the evaporator and to deliver higher pressure vapor to the condenser independently of the oth...

A dual refrigerant circuit chiller (10) has a first refrigerant circuit (100) including a first condenser (130) and a first evaporator (140), a second refrigerant circuit (200) including a second condenser (230) and a second evaporator (240), a condenser assembly (30) including the first condenser (130) and the seco...

A heat pump system includes a compressor, a reversing valve, an outdoor heat exchanger and an indoor heat exchanger in a circuit, and a refrigerant-to-water heat exchanger. In the air cooling with water heating mode, the air heating with water heating mode and the water heating only mode, water from a water reservoi...

A refrigerant system is provided with a pulse width modulation valve. A compressor temperature is monitored to prevent potential reliability problems and compressor failures due to an excessive temperature inside the compressor. A control changes the pulse width modulation valve duty cycle rate to maintain temperatu...

A control device (4) having a graphical user interface (10) for controlling the operation of a transport refrigeration unit (3) is disclosed. The graphical user interface (10) may include a menu structure having multiple levels of menu options  executable functions and data items that may be navigated and viewed by ...

A screw compressor has a housing (22; 302) having first (53; 330) and second (58; 340) ports along a flowpath. A first rotor (26; 306) has a lobed body. A second rotor (28; 308, 310) has a lobed body enmeshed with the first rotor body. The rotors and housing cooperate to define a compression path between suction (60...

A security monitor system (10) for a transport unit is provided. The security monitor system (10) may include at least one security sensor (12) configured to detect a fault condition  and a controller (14) having a plurality of inputs (22)  a plurality of outputs (24)  and a low power control circuit (18). The low p...

A control system (200 300) for a refrigeration unit (100) is disclosed. The control system (200 300) may include a user interface (202 302) an interface bus (214 314) a power control module (204 304) a first module (206 306) and a second module (208 308). The interface bus (214 314) may communicatively couple the us...

A method is disclosed for controlling initiation of a defrost cycle of an evaporator heat exchanger of a refrigeration system operatively associated with a refrigerated transport cargo box. The method includes the steps of establishing an return air-saturation temperature differential equal to the difference of a se...

A fan unit (10) for purifying air comprises a fan housing (20), a Rota table fan body (3O)disposed within the housing (20), the fan body having a flow inlet cavity (36) and an air purifying lamp (40) disposed at least partially within the flow inlet cavity (36), whereby, in use, air drawn into the housing (20) throu...

A refrigerant vapor compression system includes a first compression device and a second compression device disposed in a refrigerant circuit in series relationship with respect to refrigerant flow and an intercooler adapted to cool the refrigerant passing from the first compression device to the second compression. ...

A variable speed drive is provided for operating a compressor motor in a refrigerant system. When a low load siluation has been determined by the refrigerant system controls, the variable speed drive operates the compressor motor at lower speed mode of operation. Further, the operation of the variable speed drive i...

A photocatalytic coaling oxidizes volatile organic compounds that adsorb onto the coating into water, carbon dioxide, and oilier substances. When photons of the ultraviolet light arc absorbed by the coaling, reactive hydroxyl radicals arc formed. When a contaminant is adsorbed onto the coating, the hydroxyl radical ...

A refrigerant vapor compression system includes a compression device, a heat rejecting heat exchanger, an economizer heat exchanger, an expander and an evaporator disposed in a refrigeration circuit. An evaporator bypass line is provided for passing a portion of the refrigerant flow from the main refrigerant circuit...

According to the present invention, a method and apparatus for generating power aboard a marine vessel is provided. The method comprises the steps of: (a) providing a Rankinc Cycle device that includes at least one of each of an evaporator, a turbo-generator that includes a turbine coupled with an electrical generat...

A vapor compression system includes a variable speed single stage compressor, a heat rejecting heat exchanger, an expansion device, and a heat accepting heat exchanger. The speed of the compressor is varied to control the refrigerant flow rate and match the cooling load requirements of the vapor compression system. ...

A refrigerant cycle is disclosed having a number of compressors operating in tandem. Discharge lines communicate a compressed refrigerant to a central discharge line for receiving flow all tandem compressors. A control is operational t o determine a number of compressors need to be operated nor whether some compres...

A heating/cooling system includes a closed circuit refrigeration system including an evaporator. Water circulating through a closed water circuit exchanges heat with refrigerant in the evaporator, cooling the water for a cooling application. The water can also be heated by a boiler, and the heated water is used to h...

A heat pump refrigerant system is provided with a pulse width modulation control for a fan moving air over the indoor heat exchanger. When it is determined that there is insufficient heat rejected by the indoor heat exchanger to heat the volume of air being delivered by the fan into the conditioned environment, the ...

A refrigerant system is provided with at least two stages of compression connected in series. An intercooler is positioned intermediate the two stages and is cooled by an indoor air stream. The intercooler is positioned to be in a path of air flow passing over an indoor heat exchanger, and preferably downstream of t...

attached

An air conditioning system having a free-cooling mode. The system includes a refrigeration circuit have a compressor, a pump, an expansion device having a variable opening, and a controller. The controller selectively operates the system in the free-cooling mode by circulating the refrigerant through the refrigerati...

A method of controlling an air conditioning system having a cooling mode and a free-cooling mode, including activating the air conditioning system; measuring a first temperature of ambient air surrounding a condenser; measuring a second temperature of the working fluid; calculating a difference between the first and...

A module for a bus rooftop air conditioner is self contained in that it has all the necessary components including a compressor, if desired, which when supplied with electrical power, can provide conditioned air to the passenger compartment of a bus. In addition, an electrically powered heater is provided in the air...

Rather than having a frame into which, or upon which, an air conditioning system is mounted, a bus rooftop air conditioning module has a unibody which is formed partially of structural members interconnected to the tube sheets of the evaporator and condenser coils to form a structural body which supports the compone...

A module is provided for attachment to the roof of a bus and includes all of the necessary components for conditioning the return air from the passenger compartment and delivering conditioned air thereto. A plurality of modules can be mounted in various relationships to collectively provide the total capacity requir...

Apparatus of removing condensate generated by a plurality of evaporator coils of a vehicular rooftop air conditioning unit. The unit further includes a condenser enclosure in which two opposed end walls are formed by a pair of condenser coils. A condenser fan is mounted for rotation in an opening in the top wall of ...

An air conditioning module is constructed to include all the necessary components for an air conditioning system within a single housing, with the housing having a supply air opening and a return air opening. The various components within the housing are so situated that the return air opening is relatively large in...

Refrigeration circuit (2) for circulating a refrigerant in a predetermined flow direc¬tion, comprising in flow direction a heat rejecting heat exchanger (4), an evapora¬tor throttle valve (8), an evaporator (10), a compressor (22), an internal heat ex¬changer (16) placed with its "cool side" between the evaporator (...

A module is provided for attachment to the roof of a bus and includes all of necessary components for conditioning the return air from the passenger compartment and delivering conditioned air thereto. Each module includes an evaporator section, a condenser section and a power section including a compressor and an in...

A module is provided for attachment to the roof of a bus and includes all of necessary components for conditioning the return air from the passenger compartment and delivering conditioned air thereto. A plurality of modules can be stacked in various relationships to collectively provide the total capacity required b...

Refrigeration circuit comprising a compressor, a heat-rejecting heat exchanger an expansion valve, a receiver, and a further expansion valve/evaporator to provide cooling. A second heat exchanger is arranged in an upper gas portion of the receiver and/or a third heat exchanger is arranged in a lower liquid portion o...

A compressor (20) has an unloading slide valve (100). The valve has a valve element (102) having a range between a first condition and a second condition, the second condition being unloaded relative to the first condition. A first surface (200) of the valve element (102) is in sliding engagement with a second sur...

A compressor (20) has a housing (22) having first (52) and second (48) members. A motor (24) within the housing (22) is coupled to one or more working elements (26, 28) to drive the one or more working elements (26, 28) to compress a fluid. A number of electrical terminals (104) are each mounted in an associated a...

A refrigerant cycle (20) having a compressor (22) compressing a refrigerant to a downstream condenser (24). A fun (25) blow air over the condenser (24). Typically, the condenser is an outdoor heat exchanger. From the condenser (24) refrigerant travels to an expansion device (26), and from the expansion device (26) t...

A control system for a heating, ventilating or air conditioning HVAC system (10) includes, a remote command receiver (14) for receiving HVAC system instructions for the HVAC system; and conditioning HVAC system, including remote command receiver (14) for receiving HVAC system instructions for the HVAC system; and a ...

A controller for an HVAC & R system is provided with the Internet connection to weather forecast information. The weather forecast information is utilized by the controller to take proactive steps in system operation and control. As an example, should the weather forecast information indicate that temperatures will ...

A refrigerant system is provided with economizer vapor injection and liquid injection functions. As is known, the economizer function enhances performance of the refrigerant system. The liquid injection lowers the discharge temperature of the refrigerant to provide reliable compressor/system operation. The liquid in...

Embodiments of the invention provide anti-icing systems (201) for drainage channels (203; 205) used to remove water run-off during heat pump evaporator coil defrosting cycles during cold weather conditions. The invention employs impedance heating to obviate heat tracing cable, its associated thermal insulation and a...

To facilitate various distances between a bus rooftop mounted condenser and the air conditioning components below the rooftop, a bulkhead plate is provided with a pair of spaced tubes whose vertical positions can be selectively adjusted to accommodate any possible installation requirement of various possible rooftop...

In a method for servicing an apparatus having a compressor (22) mounted to a support structure (32, 38, 40), a guide structure (102, 104; 202, 204) is placed adjacent to the support structure. The compressor is lifted from an installed position. The compressor is withdrawn by rolling the compressor along the support...

A compressor has a suction port, a discharge port, and an economizer port. A condenser is downstream of the discharge port. An evaporator is upstream of the suction port. An expansion device is between the condenser and the evaporator. An economizer is between the condenser and the evaporator. An economizer line ext...

A dual refrigeration circuit watercooled chiller has its respective evaporators and condensers interconnected by waterboxes such that the first circuit tubes discharge into the respective waterbox and the flow of water then passes from the respective waterboxes to the respective evaporator/condenser tubes of the sec...

A dual refrigeration circuit, watercooled chiller has its respective evaporators and condensers interconnected by waterboxes, with each waterbox having an inlet flow and outlet flow connection, and with three passages interconnected with the respective evaporators/condensers of the first and second circuit, and with...

A refrigerant system (10, 100, 200) is provided with a power control system (30,130, 230). The power control system adjusts the speed of the motors driving the refrigerant system components such a compressor, a fan or a pump via a variable speed device (75, 175, 275) or bypasses the variable speed device (75, 175, 2...

A vapor compression system includes a compressor, a condenser, an expansion device and an evaporator. Refrigerant circulates though the closed circuit vapor compression system. Touchdown bearings protect a rotor during power shutdown of the compressor. Liquid refrigerant from the condenser flows along a supply line ...

An air conditioning system having a cooling mode and a free-cooling mode is provided. The system includes a refrigeration circuit, two pressure sensors, a controller, and a pump-protection sequence resident on the controller. The refrigeration circuit includes a compressor and a pump. The first pressure sensor is at...

A compressor has an inlet, an outlet, and at least an intermediate first port therebetween. A condenser is coupled to the compressor to receive refrigerant. First and second evaporators are coupled to the condenser to receive refrigerant. Conduits define a return flowpath from the first evaporator to the compressor ...

An air conditioning system having a cooling mode and a free-cooling mode. The system having a refrigeration circuit having a compressor and a pump; a suction pressure sensor for measuring a suction pressure of the compressor, a discharge pressure sensor for measuring a discharge pressure of the compressor; a control...

An air conditioning system having a cooling mode and a free-cooling mode is provided. The system includes a refrigeration circuit, two pressure sensors, a controller, and a pump starting sequence resident on the controller. The refrigeration circuit includes a compressor and a pump. The first pressure sensor is at a...

A module is provided for attachment to the roof of a bus and includes all of necessary components for conditioning the return air from the passenger compartment and delivering conditioned air thereto. A module can be ganged in various relationships to collectively provide the total capacity required by the bus. Each...

A method comprises the steps of (a) providing a refrigeration unit having a refrigerated or heated space and at least one measured operating parameter, (b) providing heat to the refrigerated space when the at least one measured operating parameter exceeds a first threshold, (c) terminating provision of heat when the...

A compressor has at least three-rotors. A first compression path between first inlet and outlet ports is associated with interaction of the first and second rotors. A second compression path between second inlet and outlet ports is associated with interaction of the first and third rotors. At least partial independe...

A screw compressor comprises a housing, a slide valve assembly and a pulsation damper. The housing receives a supply of working matter from a pair of intermeshing screw rotors, and comprises a slide recess, a pressure pocket, and a piston cylinder. The slide valve assembly regulates the capacity of the screw compres...

The invention provides for a conjugate pair of intermeshing rotors having helical lobes comprising helical crests and intervening grooves for rotation about parallel axes (A, B) within a working space of a screw rotor machine, each rotor has a tip circle (TF, TM), a pitch ckcle (PF PM), and a root circle (RFR, RMR),...

NA

A controller for controlling a heater associated with the crankcase of a compressor senses electrical current flowing through the heater. The sensing is preferably accomplished by a transformer in combination with an amplifier providing a feedback signal to the controller. The transformer is installed in the line wh...

A valve tip 20-la, 20-2a and its associated recess 40-1, 402 in a compressor 10 are provided along each line from the center D of the cylinder 40-3 through the center A, B, or axis, of a suction port 30-1, 30-2.

NA

A method for coating surfaces of a screw machine. The method includes the steps of providing at least one of a plurality of screw machine components including a rotor housing having at least a pair of parallel, overlapping bores; at least a conjugate pair of intermeshing rotors located in the bores, wherein each of ...

A compressor (20) has at least a first rotor (26; 28) at least partially within a bore (276; 278) of a housing. A slide valve element (102; 300) is positioned at least partially within a channel (200; 301) in the housing and has a first surface facing the first rotor. The slide valve element includes a body ...

A compressor piston has protrusions which extend upwardly into discharge ports to minimize clearance at the end of the compression stroke. The protrusions fit into circumferentially isolated discharge ports, and each of the ports are associated with reed valves. Preferably a cutout portion is formed into the piston ...

A fuel cell is provided to furnish electrical power to an HVAC&R system, and the waste heat from the fuel cell is transferred to a secondary fluid directed to flow to the climate-controlled space of a building during periods of time in which heating is required. The heat rejected by the fuel cell may be a supple...

A compact rooftop air conditioning unit for a vehicle, said unit having an evaporator coil located adjacent to a condenser coil. At least one cylindrical blower is mounted adjacent the evaporator coil and is arranged to provide conditioned supply air to the interior of the vehicle. An electric motor is used to turn ...

A corrosion and abrasion resistant multilayer coating protects a compressor operating in a marine environment. The coating includes a thermal sprayed cermet layer and an organic based sealant layer.

A drive positioning mechanism with backlash adjustment for use in a variable pipe diffuser for a centrifugal compressor. A rotational drive means is fixedly attached to the housing of a centrifugal compressor with a pinion gear mounted thereto. A rack gear is mounted to the inner ring and adapted to engage in m...

Method for controlling an intermittently supercritically operating refrigeration circuit (2) for circulating a refrigerant in a predetermined flow direction comprising in flow direction a compressor (4), a heat-rejecting heat exchanger (10), a control valve (12) associated to the outlet (14) of the heat-rejecting he...

A compressor has first (26) and second (28; 30) enmeshed rotors rotating about first (500) and second (502; 504) axes to pump refrigerant to a discharge plenum (42). The compressor includes a muffler system (200) comprising a sound absorbing first element (232) and a sound absorbing second element (236). The se...

Illumination of the interior product display space of a cold beverage merchandizer is enhanced by: a first reflector (90) disposed along a lower front region of the interior product display space at the front of the cabinet; a second reflector (92) disposed in the upper front region of the interior display space in ...

A compressor includes a slide valve (24) having a passage that can be in fluid communication with a discharge plenum (22) and a suction plenum (20). The slide valve (24) position may be axially adjusted to control an amount of refrigerant that is compressed between a male rotor (14) and a female rotor (12) in the co...

The display space of a multiple door display merchandiser is illuminated by one or more vertically extending lamps (80) disposed intermediate the vertical sides of an access opening to the display space. A multiple door assembly (44) covers the access opening. To enhance the illumirfsition of the display space,...

The interior space within a refrigeration unit cassette (50) associated with a refrigerated merchandiser (10) is divided by a division wall (68) into a first section in air flow communication with the interior product display space of the cabinet (20), and a second section isolated from said first section and i...

A horizontal shell.-and-tube heat exchanger operable as a falling-film evaporator and refrigerant distribution system is disclosed. The system includes an inline heat exchanger tube bank operating in a falling-film evaporation mode, including a plurality of unstaggered rows of heat exchanger rubes, wherein the rows ...

A vapor compression system (10), also known as a chiller, includes a refrigeration loop and a lubrication loop. The lubrication loop includes a lubrication reclamation system that further includes a still (42) and an ejector (44) to reduce a pressure in the still (42). The ejector (44) includes an Input portion (46...

The invention provides for a transverse fan (10) including an impeller having a rotor (12) having an outer diameter Do, a vortex wall (116) having a tip (116-1) spaced from said rotor by a clearance, dgaP, and a rear wall (20) which coacts with said vortex wall to define a discharge portion having an angle, characte...

A variable pipe diffuser is disclosed for use in a centrifugal compressor. The variable pipe diffuser includes an outer ring and an inner ring which is rotatable circumferentially within the outer ring between a first, open position and a second, closed position. In an open position, complementary air channel sectio...

An air conditioning system comprising an outdoor condensing unit serving a plurality of individually operable indoor cooling units (FCU1-5). The condensing unit includes a logic control circuit (33) for controlling the flow of liquid refrigerant to the fan coils of the cooling units according to the demand for cooli...

The velocity of the integral speaker coil and cone of the canceling loudspeaker of an ANC system corresponds to the sound being produced by the canceling loudspeaker. By sensing the velocity of the speaker coil/cone and comparing the sensed velocity to the driving signal from the controller, the response time and di...

An open-pore polyurethane foam support body (20) is impregnated in a single step with a solution of a thermoplastic adhesive dissolved in a solvent that is also a foam expander, or in two sequential steps first with a foam expanding solution and then, after the foam has expanded, with a solution of a thermoplastic a...

A method for reducing the galvanic corrosion of dissimilar metals in contact with one another wherein the exposed surface of the more noble metal is coated with a metal more galvanically compatible with the less noble metal.

A subassembly of an electric motor and a fan for use in an air conditioner includes a centrifugal fan adapted for rotation about a longitudinal axis. The fan has an open inlet end at one longitudinal end thereof and convex closed end partition defining a cup-shaped space at the other axial end thereof. The fan motor...

An air conditioner which includes an evaporator module and a condenser module. The evaporator and condenser modules are adapted to be mounted into a structural base pan for supporting both modules when used as a room air conditioner. Refrigerant tubing and appropriate electrical wiring interconnect the units in such...

A motor mount for an electric motor includes a single piece pedestal-like support structure having a pair of quick disconnect mounting clips, which attach the electric motor thereto. Specifically, the motor mount includes a pair of spaced apart substantially vertically extending support legs. The upper ends of the l...

A grille for the indoor section of a room air conditioner has transversely extending latching structure formed on the inside of a pair of opposing walls. The transverse structures on one side thereof engage openings in the air conditioner indoor housing, which thereby receive and cooperate with the structure on one ...

NA

A multi-rotor screw compressor includes a housing, a sun rotor, and first and second planet rotors. The first planet rotor intermeshes with the sun rotor to define a first compression pair. The second planet rotor intermeshes with the sun rotor to define a second compression pair. The first and second compression pa...

A valve for varying volume ratio in a screw compressor to balance a compression pocket pressure and a discharge pressure in the screw compressor comprises a valve body and a reed valve. The valve body defines a duct and an auxiliary port. The duct includes an open end in communication with a discharge chamber of the...

A drive positioning mechanism with backlash adjustment for use in a variable pipe diffuser for a centrifugal compressor. A rotational drive means is fixedly attached to the housing of a centrifugal compressor with a pinion gear mounted thereto. A rack gear is mounted to the inner ring and adapted to engage in meshin...

A compression-expansion air conditioning system employs a subcooler coil disposed in the lea"ving air side of the indoor air evaporator coil. During a cooling and dehumidification operation, the condensed liquid passes through two flow restriction devices in series. A liquid line branch supplies condensed liquid ref...

A high latent cooling control assembly for a compression-expansion air conditioning system employs a subcooler coil disposed in the leaving air side of the indoor air evaporator coil. A liquid line branch supplies condensed liquid refrigerant from the condenser to the subcooler coil, and a flow restrictor, which can...

An acoustic sensing means such as a microphone or a thin-film sensor is located in a flowing medium. To prevent the sensing of flow generated noise, the sensing means is separated from the flowing medium by at least three stages of shielding. In a preferred embodiment, the sensing means is located within a foam shie...

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According to the present invention, an air directing housing is provided for an air conditioning unit of the type having a basepan which supports indoor and outdoor sections. The basepan includes a vertical wall extending upwardly for a part of the height of the unit to define a lower portion of a partition which se...

A control box for an air conditioner, which is mounted in an indoor section of the air conditioner. The control box includes a rear wall having two vertical edges and a lower edge, first and second side walls each of which have a rear edge connected to one of the vertical edges of the rear wall and which extend forw...

According to the present invention, an arrangement is provided for mounting compressors on the basepan of an air conditioner which is adapted to use one of two different types of compressors. Each of the compressors is adapted to be mounted in substantially the same region of the basepan. The mounting arrangement in...

According to the present invention, apparatus is provided for mounting an evaporator coil within an indoor section of an air conditioner. The air conditioner includes an indoor section having a housing in which an evaporator coil having a top and vertically extending tube sheets is mounted. The evaporator is support...

A flow stabilizer is provided for reducing low frequency flow oscillations within and the resultant noise from the impeller of a transverse fan. Such oscillations and noise can arise in installations where the fan is located downstream of the heat exchanger in an air conditioning unit. The stabilizer is a vane locat...

A heat exchanger of a split and wall hanging type air conditioner is disclosed. The heat exchanger includes an upright cooling fin section, a first inclined cooling fin section and a second inclined cooling fin section. The second inclined cooling fin section is connected to an upper end of tne first inclined c...

A control box for an air conditioning unit, which is configured to contain control components and a capacitor. The control box includes a housing having an inverted L-shape, which defines a substantially vertical section and a substantially horizontal section. The horizontal section has an open front defined by peri...

A room air conditioner unit of the type having a basepan, which is divided into indoor and outdoor sections by a partition. The indoor section includes an evaporator coil, an evaporator fan and a scroll for directing indoor air flow. The outdoor section includes a compressor, a condenser coil, a condenser fan, a con...

An integrated air conditioning system having a first air conditioning unit having a first evaporator with a first input and a first output; a second air conditioning unit having a second evaporator with a second input and a second output; a first conduit fluidly connecting the first input with the second output; a s...

A rotor for a screw rotor machine includes a shaft and a plurality of lobes disposed on the shaft, each of the lobes extending radially outward from the shaft and having a tip surface, a rear surface and a transition section disposed between the tip surface and the rear surface, the transition section having an arcu...

A slide valve for use in a screw compressor comprises a main body portion configured for sliding in a pressure pocket of a screw compressor to regulate output of a working matter through screw rotors of the compressor. The main body of the slide valve includes a plurality of walls that define an enclosed interior c...

The present invention relates to a refrigerated display case (1) comprising a display platform (6) supporting the goods to be refrigerated, a device for cooling (7) and a device for venting (8) an airflow which are both located next to one of the vertical walls of the refrigerated display case and comprising at...

A compressor oil diversion and collection system used in a compressor having a housing, a crankshaft having shaft seals, refrigerant and a compression device for compressing the refrigerant. The system includes a shaft sealing mechanism that uses a lubricant for preventing compressor refrigerant from leaking out of ...

A crankshaft for use in a compressor that incorporates a lip seal includes a first material forming the crankshaft, an area on the crankshaft that engages the lip seal, and protection for the crankshaft from wear due to frictional contact with the lip seal. The protection includes a secondary material added to the c...

A compressor apparatus (20) has a housing (22) having first (53) and second (58) ports along a flow path. One or more working elements (26; 28) cooperate with the housing (22) to define a compression path between suction (60) and discharge (62) locations along the flow path. An unloading valve (100) has a valve...

A compressor apparatus has a housing (22) having first (53) and second (58) ports along a flowpath. One or more working elements (26, 28) cooperate with the housing to define a compression path between suction and discharge locations along the flowpath. A check valve (70) has a valve element having a first conditi...

A screw compressor (20) has compressor lubrication network having a lubricant outlet port (242) along a low pressure cusp (244). An unloading slide valve element (102) may be along a high pressure cusp (105).

A suction modulation valve is throttled when conditions in a retngerant system indicate that an undesirable amount of liquid refrigerant might otherwise be delivered to the compressor. As an example, the throttling would occur at startup, among other conditions. Throttling the suction modulation valve reduces the am...

A compressor apparatus having a check valve (70) having a first condition permitting downstream flow along the flowpath and a second condition blocking a reverse flow. The valve element includes a resonatoer, (112).

A compressor (20) has an unloading slide valve (100). The valve has a valve element (102) having a range between a first condition and a second condition, the second condition being unloaded relative to the first condition. A piston (124) is in a cylinder (128) and mechanically coupled to the valve element. A c...

An air handling system (10) containing sections each having a framework made up of tubular structural elements defining each perpendicularly aligned openings each (11) of which shares a common structural element with its neighbors (11). The openings are closed by panels (12) that are latched into the openings (11). ...

A locking mechanism (50) for an air handling duct (10) which includes a plurality of interconnected modules which together made up the duct. The locking mechanism includes a male retainer contained on a frame member of a first module, with the male retainer having a locking arm (54) adapted to be moved from an unloc...

A panel (12) for use in air conditioning duct for carrying air along an enclosed path of travel. The panel includes a rectangular shaped frame (25) made of a material having a relatively high R value. The frame (25) is closed by a top cover (40) and a bottom cover (41) so that a cavity is established within the pane...

A diagnostic method for testing a fan or pump assembly in a refrigerant system includes steps of operating a controller to periodically shut down, or reduce fan or pump speed for a short period of time, while continuing to operate the refrigerant system. Changes in an operating condition such as pressure, temperatur...

A distributor 12 for an evaporator 22 in a vapor-compression circuit 10 comprises an elongate body 50A, 50B defining an inlet portion 56A and first and second distal ends 58A, 58B. The body 50A being positionable along an interior sidewall 42 of the evaporator 22. The inlet portion 56A positionable opposite an inlet...

A system and method for conditioning air within an air handling system of a building is provided. The building has a hot water source and a cold water source. The conditioning system includes at least one heating-cooling unit connected to the air handling system, a primary water storage device, at least one heat pum...

A vaporizer for boiling off a liquid refrigerant from a combined liquid refrigerant/lubricant mixture tapped from an evaporator utilizes hot compressed gaseous refrigerant tapped from a location upstream of the condenser. In a preferred embodiment, the refrigerant is tapped from a compression chamber within the com...

An apparatus and process are provided for drilling and completing multiple subterranean wells from a template which is secured within a cased well bore extending to the surface. An orienting cam having a bore therethrough is positioned above the template such that the bore through the orienting cam is automatically ...

Apparatus for alternatively mounting either a large cylindrical capacitor having a given length and a given diameter or a small cylindrical capacitor having a given length and a given diameter. The apparatus includes a substantially planar support wall having two or more substantially U-shaped support walls extendin...

A refrigerant management system for use in an absorption cooling and heat machine that includes a holding tank for storing a given amount of refrigerant that is bled from the refrigerant supply line for bringing refrigerant from the evaporator sump into the evaporator header. A return line is located in the top of t...

In a single row evaporator coil having a last tube receiving refrigerant in a superheated condition, at least one baffle is provided to divert the flow of air passing over the superheat tube such that it also passes over a nonsuperheat tube so that air can be dehumidified by the cooling effect of the nonsuperheat tu...

A method for diagnosing a fault condition in a climate system is disclosed and a computer program product for doing the same. The climate system may be an HVAC system. The method comprises receiving current data from a climate system in a fault condition calculating an anomaly score for the climate system from a fir...

A fluid carrying tube for a heat exchanger includes an outer perimeter an inner perimeter and a plurality of ridges extending from the inner perimeter inwardly into an interior of the tube. Each ridge includes a ridge height a base width and a tip width. A ratio of the ridge height to the base width is between about...

A safety automation system for an occupiable structure includes a computing management system including a computer processor and a computer readable storage medium configured to run embedded software and cloud server software. A fire detection device of the automation system is adapted to detect a fire condition and...

A safety automation system (20) for an occupiable structure includes a computing management system (44) including a computer processor (46) and a computer readable storage medium (48) configured to run embedded software and cloud server software. A detection device (30) of the automation system is adapted to detect ...

A refrigeration system is provided including a refrigeration circuit and a free cooling system. The free cooling system includes a fluid cooling circuit and a free cooling circuit. The fluid cooling circuit is thermally and hydraulically coupled to the refrigeration circuit such that that a cooling fluid of the flui...

A pholocatalytic coating oxidizes volatile organic compounds that adsorb onto the coating into water, carbon dioxide, and other substances. When photons of the ultraviolet light arc absorbed by the coating, reactive hydroxyl radicals are formed. When a contaminant is adsorbed onto the coating, the hydroxyl radical o...

A control system for an HVAC system having a plurality of HVAC components comprises a controller having a processor and a memory the controller in signal communication with at least one of the plurality of HVAC components the controller configured to: determine an aggregate demand of the HVAC system; determine an in...

A compressor (22) has a housing assembly (50) with a suction port (24) and a discharge port (26). A shaft (70) is mounted for rotation about an axis (500) and an impeller (44) is mounted to the shaft to be driven in at least a first condition so as to draw fluid in through the suction port and discharge the fluid fr...

A heat sink device for cooling a power electronics module includes a base platform having a first surface and a second surface on opposite sides of the base platform a plurality of upright members extending outwardly from the first surface of the base platform and defining a cavity wherein the power electronics modu...

A heat exchanger is provided and includes a shell extending between opposing tube sheets to define an interior nozzles coupled to the shell by which a first fluid is communicated with the interior and a tubular body extending between the opposing tube sheets to transmit a second fluid through the interior whereby he...

A method is provided for operating a refrigerant vapor compression system, for example an air-cooled chiller or air-cooled condensing unit, at optimal energy efficiency rating. The method includes the steps of: determining the instantaneous values of a plurality of selected operating parameters of the system"s refri...

A heat exchanger (10) adapted to transmit a first fluid (32) through an interior (21) having a tubular body (40) receptive of a second fluid (41) whereby heat transfer occurs between the fluids is provided the tubular body extending longitudinally through the interior having a non circular cross  section (42) and be...

A refrigerated sales cabinet (20) comprises a cabinet body (22) providing a refrigerated sales space for supporting refrigerated goods to be presented therein; at least one door (38); and a door frame (21) having a top post (34) a bottom post (36) and at least two upright posts (32). At least one of the posts (32, 3...

An apparatus (20) has a centrifugal compressor (24) a positive displacement compressor (26) a first heat exchanger (32) and a second heat exchanger (36). A plurality of valves (70 72 74) are positioned to provide operation in at least two modes. In a first mode refrigerant is compressed in the positive displacement ...

A refrigerated merchandiser (10) memoes cabinet (20) having a top wall (22), a lower wall (24), a wall (34), and side walls (36, 38) defining an interior product display space (100) housing a product (110) on shelves (112) in a refrigerated environment intended for selection by consumers. A refrigeration unit ca...

A refrigerated sales furniture (2) according to the present invention comprises a furniture rear wall (6) extending substantially upright from a base (4); a goods presentation space (10) including a bottom area (12); an air suction channel (20) for sucking air from a lower front end portion of the refrigerated sales...

A system to perform a vapor compression refrigeration cycle using water as the refrigerant is provided and includes an evaporator to output water vapor having a water vapor temperature of a first temperature and a water vapor pressure of a first pressure a condenser to output liquid water at a second temperature whi...

A heat sink assembly is disclosed for cooling a power electronics module such as a variable frequency drive. The heat sink assembly includes a housing and a heat sink structure. The housing defines an interior chamber for enclosing the power electronics module and also defines a cooling air flow channel exterior to ...

A relationship is developed between a discharge condition of a refrigerant leaving a compressor, and the suction superheat or refrigerant quality. By relying upon measurement and control of the discharge condition, the present invention is able to achieve very low suction superheat values. Controlling the operation ...

A refrigerant system has an economizer cycle. A vapor refrigerant from the economizer loop is returned to a dedicated economizer compression chamber. A main refrigerant is returned to a dedicated main compressor chamber. A bypass line communicates the two refrigerant flows.

A compressor (22) has a housing assembly (40) with a suction port (24) a discharge port (26) and a motor compartment (60). An electric motor (42) has a stator (62) within the motor compartment and a rotor (64) within the stator. The rotor is mounted for rotation about a rotor axis (500). One or more working elements...

A refrigeration system having a refrigeration unit (22) for providing temperature conditioned air to a temperature controlled space an engine (26) and an electric generation device (24) driven by the engine is provided with a battery system (28) for supplying electric power. A method of operating the transport refri...

A multiple bank, flattened tube heat exchange unit includes a first tube bank including a flattened first tube segment extending longitudinally between a first manifold and a second manifold; and a second tube bank including a flattened second tube segment extending longitudinally between the first manifold and the ...

A power supply system for a transport refrigeration system (20) includes an engine (26) coupled to a compressor (32) of a refrigeration unit for direct drive powering the compressor (32) and a generator (24) arranged to also be direct driven by the engine (26) for generating electric power. The generator (24) and th...

A vapor compression cycle system is combined with a Rankine cycle system, with the two systems having a common suction accumulator from which the compressor draws refrigerant vapor for the vapor compression cycle system and from which a pump draws liquid refrigerant for circulation within the Rankine cycle system. T...

A centrifugal compressor impeller (60; 160) has a hub (62; 162) having a gaspath surface (64; 164) extending from a leading end to a trailing end. A plurality of blades (70A, 70B; 170) extend from the hub gaspath surface and each have: a leading edge (72A, 72B; 172); a trailing edge (74A, 74B; 174); a first face (8...

A compressor includes a diffuser section having a diffuser structure and a silencer. The silencer includes a silencer housing defining a cavity and a silencing pad disposed within the cavity, wherein an exposed surface of the silencing pad is arranged in contact with a portion of the diffuser structure. ...

An illustrative example method of controlling use of a portable cooling container includes determining at least one characteristic of an amount of use of the cooling container. The at least one characteristic is determined by at least one of a processor at a location remote from the cooling container and a container...

A method for delivering one or more orders of goods (42) to one or more customers using a one or more coolers (100), each cooler having a compartment (212) and an environmental control unit (290). The environmental control unit has: a temperature sensor (390); a radio (370); a controller (330) coupled to the temp...

A heating, ventilation, air conditioning and refrigeration system includes a heat transfer fluid circulation loop configured to circulate a refrigerant therethrough, a purge gas outlet in operable communication with the heat transfer fluid circulation loop and at least one gas permeable membrane having a first side ...

A balancing weight mountable within a balance hole of a rotary component includes a cylindrical body having a desired weight. An opening is formed in a portion of the body to define a hollow passageway and a mechanism couples the cylindrical body within an interior of the balance hole.

The present utility model provides a fan cover shell and an air conditioning unit having the same. The fan cover shell includes an outer frame; multiple annular auxiliary reinforcement ribs, arranged from the center of the fan cover shell towards the outer frame; and multiple main reinforcement ribs, respectively ex...

A method of monitoring a volume index valve of a compressor is provided. The method includes recording a first reading of an operating condition of the compressor when the volume index valve is in a first position. The method also includes switching the volume index valve to a second position. The method further inc...

System includes a compressor having a compressor suction port and a compressor discharge port; a heat rejection heat exchanger fluidly coupled to the compressor discharge port; an expansion device fluidly coupled to an outlet of the heat rejection heat exchanger; a heat absorption heat exchanger fluidly coupled to t...

A control method for an air conditioning system is provided by the present disclosure. The control method includes: SI00, acquiring an actual cooling/heating capacity output by the air conditioning system, and acquiring an actual temperature change rate of an indoor heat exchange unit; S200, automatically learning a...

An on line corrosion replenishment system for use in an absorption cooling unit which includes an evaporator means, an absorber means, a generator means and a condenser means which are interconnected to provide an absorption cycle in which a lithium bromide solution is circulated through said unit through a ...

The compressor in a refrigeration system is controlled solely by a variable speed drive which controls the motor of the compressor by virtue of the varying of the frequency of the electricity provided to the motor. To minimize the initial cost and to minimize operating costs, the variable speed drive is cool...

A lamp including a reflective portion is utilized in a fluid purification system to maximize the light delivery to a photocatalytic coating that oxidizes gaseous contaminants that adsorb onto the surface to form carbon dioxide, water, and other substances. An ultraviolet light source positioned proximate to the hone...

A multi-rotor screw compressor includes a compressor housing defining at least three parallel rotor housing sections, each rotor housing section containing a rotor, ana adjacent rotors defining at least two compressor pairs, the housing further including a suction port and a discharge port for each of the co...

An air conditioning system having a cooling mode and a free-cooling mode. The system includes a refrigeration circuit have a compressor, a pump, an expansion device having a variable opening, and a controller. The controller selectively operates the system in the cooling mode by circulating and compressing a...

A multiple refrigerant circuit cooling system includes at least a first refrigerant circuit (1 11, 1 13, 114, 115) and a second refrigerant circuit (11 la, 1 13a, 114a, 115a). Each of said first and second refrigerant circuits (1 11, 113, 114, 1 15, 111a, 113a, 1 14a, 115a) including a compressor (113, 113a), a c...

A falling film evaporator includes a housing and a plurality of evaporator tubes located in the housing. A liquid refrigerant distribution system is positioned in the housing and includes a manifold having a plurality of manifold outlet openings and a baffle positioned between the manifold and a distribution vessel ...

A refrigeration unit may include a first compressor constructed and arranged to compress a first refrigerant, and a second compressor constructed and arranged to compress a second refrigerant. A first condenser of the refrigeration unit is operatively coupled to the first compressor, and a second condenser is operat...

The present invention provides an economizer, including a housing having a first section and a second section; and a condenser outlet, an evaporator inlet, and a compressor intermediate-stage inlet que est ensuite à la section de l"habitation; The first section of the first section of this report contains a descript...

A heat exchanger arrangement (2) comprises at least one heat exchanger (4) including at least one substantially horizontally oriented manifold (6a 6b) forming an upper side of the at least one heat exchanger (4) the at least one manifold (6a 6b) having lateral end portions (8); and a support structure (10) including...

An example centrifugal compressor includes a housing that defines an inlet chamber and includes first and second openings that define a recirculation passage in fluid communication with the inlet chamber. An impeller is disposed within the housing and is rotatable about a longitudinal axis to draw fluid into the inl...

A system and method of detecting smoke including establishing a baseline measurement for each of at least three overlapping sensing volumes; comparing a measured reading within each of the at least three sensing volumes and the baseline measurements to determine whether the measured reading is within a sensing thres...

An impeller mountable within a centrifugal compressor includes a hub having a front side and a back side, the hub being rotatable about an axis of rotation and a plurality of vanes extending outwardly from the front side of the hub such that a plurality of passages is defined between adjacent vanes. The plurality o...

A fan housing (184) is provided for accommodating a fan (154) rotating about a central axis (500). The fan housing comprises: an inlet (212); a diffuser (202); an inner diameter (ID) surface (200, 210) facing the central axis; and an outer diameter (OD) surface (240) facing away from the central axis. A rim (220) at...

A hydronic economizer module configured for use in a chiller system having a vapor compression cycle including a housing having at least a first air inlet. A heat exchanger assembly located within said housing. The heat exchanger includes at least one heat exchanger coil. A fan assembly includes at least one fan gen...

An environmental control unit for use with a transport container is provided. The environmental control unit comprises: a thermoelectric device; a fan to blow air across the thermoelectric device; a cooling module configured to receive the air blown across the thermoelectric device and convey the air to a compartmen...

An air conditioning system and a control method thereof are provided by the present disclosure. The air conditioning system includes a main circuit and a first subcooling circuit, wherein the main circuit has: a main compressor and an injector; a gas cooler and a gas-liquid separator connected between the main compr...

A cooling system is provided and includes a compressor, an expansion valve, a gas cooler through which a refrigerant received from the compressor passes toward the expansion valve in a supercritical state, an evaporator interposed between the expansion valve and the compressor and a vapor sorption subcooling system....

An environmental control unit for use with a transport container is disclosed. The environmental control unit includes a thermoelectric device, a fan configured to blow air across the thermoelectric device, a cooling module, a controller in electronic communication with the thermoelectric device and the fan, and a c...

A detector device includes a light source disposed within a chamber, a sensor disposed within the chamber, a compensator circuit electrically coupled with the sensor, and a controller. The controller is operable to receive a sensor signal generated by the sensor, determine a compensation factor to adjust the sensor ...

A method and system for providing cold transportation is disclosed. A method includes receiving a registration of a transportation provider on a digital marketplace. A method further includes verifying capabilities of the transportation provider and receiving a transportation request from a requestor. A method furth...

An axial flow fan includes a hub rotatable about a fan axis and a plurality of fan blades mounted to the hub. One of the plurality of fan blades includes at least one wave extending in a span wise direction over the fan blade and at least one serration extending along a trailing edge of the fan blade. The at least o...

A photoelectric smoke detector, includes an optics cover that provides a smoke chamber that has a smoke chamber opening, a CO detector is mounted to the optics cover. An inner cover provides a first opening and a second opening. The first opening receives a portion of the CO detector and the second opening is aligne...

An air handling unit (1) for cooling down an indoor airflow (A1) comprises at least one fan (3) circulating the indoor airflow inside the air handling unit (1) and a first and a second cooling subsystems (5, 15) comprising each: - a refrigeration apparatus (50, 150) comprising an evaporator (500, 1500) and a conden...

This refrigeration apparatus (1) comprises a main refrigerant circuit (2) including a positive displacement compressor (4), a condenser (6), an expansion valve (8), an evaporator (10), through which a refrigerant circulates successively in a closed loop circulation, and a lubrication refrigerant line (18) in fluid c...

A seal assembly for a compressor includes at least one impeller. At least one seal land is associated with the impeller including a plurality of radially stepped surfaces. A seal is associated with each of at least one seal lands. The seal includes a plurality of radially stepped projections corresponding to the pl...

A vapor compression system includes a compressor that has a suction port and a discharge port. A heat rejection heat exchanger is coupled to the discharge port to receive compressed refrigerant. A heat absorption heat exchanger is coupled to the suction port. A lubricant flowpath goes from the heat absorption heat e...

Aspects of the invention are directed towards a system and a method for controlling temperature inside electrical and electronics systems. One or more embodiments of the invention describe the method comprising the step of sensing temperature of an inverter section by a temperature sensor, the inverter section compr...

This air handling unit (1) comprises an enclosure (3) in which air circulates along a flow direction (X), at least one heat exchanger (5) mounted in the enclosure (3), a condensate recuperator (15) placed under the at least one heat exchanger (5), and a support member (13, 19) stationary with respect to the enclosur...

An ejector and a refrigeration system are provided by the present disclosure. The ejector includes: a high-pressure fluid passage, a flow valve for controlling a flow rate being disposed in the high-pressure fluid passage; a suction fluid passage; a mixing chamber, which includes a mixed fluid outlet; a thermal bulb...

Disclosed is an alarm unit having an alarm controller, the alarm controller being operatively connected to a plurality of implements within the alarm unit having a mechanical actuator and a magnetic sensor and at least one of a visual source and an audible source, wherein the alarm unit: monitors for input to initia...

A prestaging, gesture-based, access control system includes a local access assembly, a mobile device, a storage medium, and a processor. The assembly includes a controller to effect actuation between access and no-access states. The mobile device is carried by a user, and includes a detection system configured to de...

An optical chamber assembly of a detection device includes a light ring for supporting at least one light device, an optical cover defining an interior chamber of the optical chamber assembly, and an intermediate component disposed between the light ring and the optical cover. The intermediate component optically co...

An ejector and a refrigeration system are provided by the present disclosure. The ejector includes: a high-pressure fluid passage extending from a high-pressure fluid inlet to a mixing chamber; a suction fluid passage extending from a suction fluid inlet to the mixing chamber, a first valve being disposed in the suc...

A transportation refrigeration system including: a transportation refrigeration unit including a compressor, one or more valves, and a controller; an energy storage device configured to provide electrical power to the transportation refrigeration unit; and an intelligent charging connector in electrical communicatio...

This air handling unit (1) comprises an enclosure (3), at least one heat exchanger (5) mounted in the enclosure (3), a condensate recuperator (15) placed under the at least one heat exchanger (5), and a condensate tray (17) adapted to receive condensate flowing from the recuperator (15). The recuperator (15) has an ...

Cooling circuit section (2), intended for the circulation of a refrigerant, said cooling circuit section (2) comprising: - at least two compressor assemblies (30), fluidically connected in parallel, each compressor assembly (30) comprising : - a compressor (40) configured to receive a low-pressure refrigerant having...

A method of operating an access control system containing one or more hierarchies, each of the one or more hierarchies includes one or more access levels is provided. The method including: computing one or more hierarchies; and assigning a primary access level of the one or more access levels within a primary hierar...

A method of operating a heat exchanger system in which a compressor, which is drivable by a motor, is fluidly interposed between an evaporator and a condenser following receipt of a shutdown command is provided. The method includes positioning inlet guide vanes (IGVs) of the compressor in a first position in the eve...

A fan housing (184) is provided for accommodating a fan (154) rotating about a central axis (500). The fan housing comprises: an inlet (212); a diffuser (202); an inner diameter (ID) surface (200, 210) facing the central axis; and an outer diameter (OD) surface (240) facing away from the central axis. A rim (220...

An alarm or detector is provided and includes an alarm board assembly configured to perform one or more of alarm and detection operations and a communication module including an antenna configured to communicate with one or more other alarms and detectors. At least one of the alarm board and an alarm ground are isol...

A smoke detector and method for testing a smoke detector are provided. The smoke detector includes a housing defining a chamber, an emitter, and a receiver. The housing includes an inlet port and an outlet port configured to allow an airflow to pass through the chamber. The emitter is configured to emit light into t...

An optical chamber assembly of a detection device includes a light ring for supporting at least one light device, an optical cover defining an interior chamber of the optical chamber assembly, and an intermediate component disposed between the light ring and the optical cover. The intermediate component optically...

PIPE ASSEMBLY AND REFRIGERATION SYSTEM The present application provides a piping assembly and a refrigeration system. The piping assembly includes: an inlet portion extending along an inlet axis; an outlet portion extending along an outlet axis, wherein a predetermined angle is formed between the inlet axis and...

A heat exchange tube for use in a heat exchanger including a first nose and a second nose aligned on an axis along a width of the heat exchange tube; an end port immediately adjacent to the first nose; wherein the end port has a noncircular, polygonal shape.

A fire detection apparatus includes a fire detector (1) comprising an integrated sounding device (5) that is configured to emit a sound (7) from the fire detector (1) and that is further configured to detect reverberation of the emitted sound resulting from a cover (9) placed over the fire detector (1). The detecte...

A heat exchanger (10) of an air conditioner, comprising : a refrigerant inlet tube (52) connected at its one end to an outdoor unit of the air conditioner for receiving the refrigerant therefrom; a distributor (54) connected to the other end of the refrigerant inlet tube; spaced apart feeder tubes (58) conne...

A heat exchanger of a split and wall hanging type air conditioner is disclosed. The heat exchanger includes an upright cooling fin section, a first inclined cooling fin section and a second inclined cooling fin section. The second inclined cooling fin section is connected to an upper end of the first incline...

The seat of a suction valve of a reciprocating compressor is modified to limit the radial extent and thereby the area in which an annular oil film can be established between the valve and the valve seat. The preferred radial extent of the seating surface is 0.014 to 0.018 inches and the preferred ratio of th...

The shaft portion of a screw rotor is axially loaded to offset the thrust loading of the screw rotor due to forces exerted on the screw rotor by fluid being compressed and tending to move the screw rotor from the discharge towards suction. This permits the elimination of the thrust bearings. Preferably, the ...

An improved room air conditioner of the type having an indoor section and an outdoor section, which are supported by a basepan and which are separated by a partition. The indoor section includes an indoor fan and an evaporator coil and the outdoor section includes a condenser coil, an outdoor fan and a compr...

An air conditioner is provided of the type having an indoor section, which includes a housing, evaporator coil and an indoor grille adapted to be mounted to the housing in spaced relation to the evaporator coil. The grille includes a front wail having a return opening therein to admit return air to be condit...

The invention relates to a conjugate pair of intermeshing rotors comprising; each of said rotors having a plurality of lobes including helical crests and intervening grooves and adapted for rotation about parallel axes within a working space of a screw rotor machine; each of said rotors having a tip circle, ...

A method is provided for manufacturing a manifold assembly with internal fluid communication between a first manifold defining a first fluid chamber and a second manifold defining a second fluid chamber of the manifold assembly the first manifold and the second manifold joined in parallel relationship along a longit...

A heat exchanger is provided including a first manifold and a second manifold separated from one another. A plurality of tube segments arranged in a spaced parallel relationship fluidly couple the first and second manifold. The plurality of tube segments includes a bend defining a first slab and a second slab. The s...

A heat pump system includes a refrigerant circuit at least one compressor an evaporator and a controller programmed to defrost the evaporator in a defrost mode wherein in the defrost mode the controller is programmed to monitor the evaporator to detect frost creation thereon and reduce the speed of the at least one ...

A purge system for removing non-condensables from a chiller system includes a purge chamber a plurality of carbon beds fluidly connected to the purge chamber into which a flow of refrigerant and non-condensables is selectably directed from the purge chamber to remove the non-condensables therefrom. A vent line is fl...

A method of secure access through a wireless connection is provided. The method includes detecting availability of an access control wirelessly by a mobile device. A predicted intent is determined of a user of the mobile device to have the access control open a lock. The method determines whether a relay attack is d...

A bearing (20; 150; 152) comprises: an inner race (26); an outer race (28); and a plurality of rolling elements (30). The inner race comprises a nitrogen-alloyed steel (40). The outer race comprises a steel (42) with lower nitrogen content than said nitrogen-alloyed steel.

An ejector refrigeration system, comprising: a compressor, a heat-extraction heat exchanger, an ejector, a separator, a first throttling element, and a heat-absorption heat exchanger that are connected through pipelines, the ejector having a main flow inlet connected to the heat-extraction heat exchanger, and furthe...

A chiller system is provided and includes a chiller, a lubrication assembly and a controller. The chiller includes a compressor, a condenser, an expansion assembly and an evaporator in fluid communication with one another. The lubrication assembly is operably coupled to the compressor, the condenser and the evaporat...

A refrigeration system and a lubricating method thereof. The refrigeration system (100) includes: a compressor (110) a condenser (120) an evaporator (130) and a lubrication circuit (200) the lubrication circuit including a post-lubrication flow path (230240260) connected from the compressor into the condenser and th...

The present invention provides a pressure relief and recovery loop, a carbon dioxide refrigeration system and a control method thereof. The pressure relief and recovery loop includes: a gas storage reservoir (110), which is used for storing gas-phase carbon dioxide; a pressure relief flow passage (120), which is use...

A heat alarm unit includes a housing and a button assembly. The housing has a central axis and defines an opening disposed substantially normal to the housing. The button assembly is exposed through the opening and is constructed and arranged to move with respect to the housing. The button assembly has a support str...

Disclosed is a system for conditioning air, the system comprising: a heat exchanger comprising a plurality of heat transfer tubes extending between an accumulation header and an outlet header, an internal volume, and an external surface, wherein an air mover is disposed in fluid communication with an air mover in fl...

A separator and distributor assembly for a falling film evaporator housed within the evaporator shell includes a housing defining a separation volume, a refrigerant inlet configured to admit a liquid and vapor refrigerant flow into the separation volume and one or more refrigerant gutters extending along a lengthwis...

A method of determining a relative location of one or more access controls is provided. The method including: detecting a first wireless signal from a first access control; determining a unique device identifier (UDID) for the first access control in response to the first wireless signal; determining a received sign...

A method of determining a destination of an individual carrying a mobile device is provided. The method including: detecting at least one of a position of the mobile device and an activity of an individual carrying the mobile device; detecting a distance between the mobile device and each of a plurality access contr...

An ejector refrigeration circuit 1 comprising: a two-phase circuit 2 comprising: a heat rejection heat exchanger 12 comprising an inlet 12a and an outlet 12b; and an ejector 14 comprising a high pressure inlet 14a, a low pressure inlet 14b and an outlet 14c; wherein the ejector high pressure inlet 14a is coupled to ...

ABSTRACT ACCESS CONTROL WITH READER TO READER COMMUNICATION An access control system and a method for operating an access control system are provided. The access control system includes a first access control device and a second access control device, each configured to receive a signal (e.g., an access credential...

Aspects of the invention are directed towards an oil separator to separate refrigerant and oil from oil and refrigerant mixture. The oil separator comprises inlets to allow entry of the refrigerant and oil mixture into the oil separator. The mixture impinges on outer wall of an inner shell and flows circumferentiall...

CARBON DIOXIDE REFRIGERATION SYSTEM WITH LOW TEMPERATURE MODE A refrigeration system for a carbon dioxide based refrigerant fluid, wherein the refrigeration system comprises a refrigerant circuit, the refrigerant circuit comprising a compression device (12), a heat rejecting heat exchanger (14), an ejector (20), ...

An aerothermodynamic separator for a refrigerated display cabinet is disclosed. The separator comprises a flat member having a predetermined dimension defining a shape of the separator. The separator is adapted to be removably positioned between a front end of one or more shelves associated with the cabinet and a re...

The present invention relates to a sealing system for magnetic levitating centrifugal 10 compressor, said magnetic levitating centrifugal compressor comprises a motor cavity and a motor shaft disposed within said motor cavity, an end of said motor shaft extends out from said motor cavity and is mounted with an im...

Airborne contaminant detection and localization systems include an HVAC system having a duct, a first vent connected to a first indoor space, and a second vent fluidly connected to a second indoor space, with the second vent being downstream from the first vent in a flow direction along the duct. A monitoring sys...

A Stirling refrigeration system is disclosed that comprises a Stirling unit having a hot end and a cold end. In addition, the Stirling refrigeration system includes a hot heat exchanger fluidically coupled to the hot end and configured to release the heat form the hot end, wherein the hot heat exchanger and the h...

A converter includes an input section including an inductive element, the input section configured to receive a multiphase, AC input voltage; a rectifier 5 section coupled to the input section; a voltage regulator section coupled to the rectifier section, the voltage regulator section configured to control a DC o...

DC OUTPUT VOLTAGE REGULATION IN CONVERTER FOR AIR CONDITIONING SYSTEMS A converter for an air conditioning system including a rectifier section configured to receive an AC input voltage; a voltage regulator section coupled to the rectifier section, the voltage regulator section configured to control a DC output ...

Various embodiments of the present invention describes 5 optimizing energy performance evaluation. The invention describes a system with an energy consumption data unit configured to determine an energy consumption data associated with an entity in different cycles. A structural drift identifier unit is configur...

Systems and methods for machine learning assisted intent determination are disclosed. In some embodiments, a system comprises at least one processor and memory storing instructions executable by the at least one processor, the instructions when executed cause the system to obtain user information, the user informati...

DC BUS CAPACITOR ASSEMBLIES FOR VIENNA VFD IN AIR CONDITIONING SYSTEMS A drive for an air conditioning system includes a converter assembly 5 including a Vienna rectifier having a converter capacitance across a positive DC bus and a negative DC bus; and an inverter assembly including an inverter capacitance acr...

A control method for a centrifugal compressor and an air conditioning system are provided. The control method for the centrifugal compressor comprises: S100, when an inlet opening of the centrifugal compressor is below a first preset value, shutting down a drive motor of the centrifugal compressor; or S200, when the...

The present disclosure provides a refrigeration system, which includes: a compressor, a condenser, a throttling device, and an evaporator, all of which are connected in sequence to form a cooling circuit, in which the refrigeration system further includes an oil recovery system which includes: an operation chamber, ...

The present invention relates to an economizer for a refrigeration system, the refrigeration system comprising a refrigerant circuit formed by sequentially connecting a compressor, a condenser, an expansion mechanism and an evaporator, wherein the economizer comprises: a tank extending in a horizontal direction; a l...

ABSTRACT HEAT EXCHANGER FOR POWER ELECTRONICS A power electronics assembly includes one or more power electronics devices, and a heat exchanger to which the one or more power electronics devices are mounted. 5 The heat exchanger includes one or more fluid pathways extending through the heat exchanger to transfe...

ABSTRACT EXPANSION CONTROL SYSTEM ON A CENTRIFUGAL CHILLER WITH AN INTEGRAL SUBCOOLER A vapor compression system including: a condenser; an evaporator; and an expansion control system on the main flowpath between the condenser and the evaporator, wherein the expansion control system further includes: one or mor...

SYSTEMS AND METHODS FOR MEMBRANE BLOCKAGE DETECTION IN GAS 5 DETECTORS Methods and systems for detecting membrane blockage in a gas detector are disclosed. In some embodiments, the gas detector comprises a membrane defining a sensing chamber of the 10 detector, the sensing chamber comprising a relaxed state pres...

The present application provides a winding method for radial magnetic bearing stator, a radial magnetic bearing stator and a radial magnetic bearing. The winding method for radial magnetic bearing stator comprises: S110, sleeving a first formed stator winding on a first stator tooth of a stator core along a radial o...

An optical monitoring device comprising a housing comprising a plurality of walls and an interior space disposed therebetween, an opening disposed in a wall of the plurality of walls, and a movable panel, wherein the opening forms a window through the wall, and wherein the movable panel is configured to be moved to...

ABSTRACT AN OPTICAL MONITORING DEVICE An optical monitoring device comprising a housing comprising a plurality of walls and an interior space disposed therebetween, an opening disposed in a wall of the plurality of walls, and a movable panel, wherein the opening forms a window through the wall, and wherein the...

ABSTRACT ENHANCED CHANNEL CONFIGURATION FOR HEAT EXCHANGER TO COOL POWER ELECTRONICS A power electronics assembly includes one or more power electronics devices, 5 and a heat exchanger to which the one or more power electronics devices are mounted. The heat exchanger includes an inlet manifold and an outlet man...

ABSTRACT SEAL FOR THERMAL INTERFACE MATERIAL OF POWER ELECTRONICS MODULES A heat exchanger assembly includes a heat exchanger and a power electronics 5 module mounted to the heat exchanger. The power electronics module is thermally coupled to the heat exchanger at a heat sink interface. A thermal interface mate...

ABSTRACT SYSTEMS AND METHODS FOR MEMBRANE BLOCKAGE DETECTION IN GAS 5 DETECTORS Methods and systems for detecting membrane blockage in a gas detector are disclosed. In some embodiments, the gas detector comprises a membrane configured to define a sensing chamber of 10 the gas detector. The gas detector further ...

ABSTRACT REFRIGERANT COOLED HEAT SINK FOR POWER ELECTRONIC MODULES A heat exchanger assembly includes a housing having at least one area of heat 5 flux and a fluid circuit arranged within an interior of the housing. The fluid circuit having an inlet manifold, an outlet manifold, and at least one fluid passage c...

ABSTRACT FABRICATED HEAT EXCHANGE TUBE FOR MICROCHANNEL HEAT EXCHANGER A heat exchange tube segment for use in a heat exchange includes a fabricated 5 tube body having an upper surface, a lower surface, a leading edge, a trailing edge, and a plurality of fluidly distinct flow channels formed therein. The fabric...

ABSTRACT ENHANCED ECONOMIZER OPERATION IN A CHILLER A refrigeration system includes a compressor, a heat rejecting heat exchanger, an expansion device, and a heat absorbing heat exchanger fluidly connected to form a closed loop through 5 which a refrigerant is configured to circulate. An economizer heat exchange...

ABSTRACT SYSTEMS AND METHODS FOR MANAGING ACCESS POINTS AUTHENTICATION REQUIREMENTS Systems and methods for managing access point authentication requirements are disclosed. In 5 some embodiments, a system comprises at least one processor and memory storing instructions executable by the at least one processor. ...

ABSTRACT CREATING A WORKFLOW FROM MULTIPLE DISPARATE WORKFLOW SYSTEMS LEVERAGING PREDICTIVE ACTIONABLE INSIGHTS FOR EQUIPMENT A method of streamlining multiple disparate workflows generated by equipment including: receiving workflow trigger sources from the equipment; generating two or more disparate workflow ...

A fresh air plenum module (10) for attachment to a fan coil unit (12) for introducing air from an outdoor setting, wherein the fresh air plenum module comprises: a first inlet (14) for connection to an outlet (24) of the fan coil unit; a second inlet (16) for connection to an air handling unit; an outlet (18) for...

A clamp unit (100) for securing a circuit breaker (201) a body (103), a clamping member (101) and at least one fastening member (105). The body (103) comprises a first portion (103-1), a second portion (103-3) distal to the first portion (103-1), and an intermediate portion (103-2) defined between the first portion ...

Aspects of the invention are directed towards a method and system for a refrigeration unit. The technology described herein provides a method for controlling the parameters of the refrigeration unit. The method comprises the generation of treated ambient air from an evaporative cooling unit 10 and measuring the t...

A heat exchanger includes a heat exchanger shell formed from a first metal material, and a plurality of heat exchanger tubes extending through a plurality of tube openings in the heat exchanger shell. The plurality of heat exchanger tubes are formed from a second metal material different from the first metal mate...

A modular cooling system is provided, the cooling system comprising a plurality of chiller modules 12 and a coolant circuit 32 with flow paths having parts in each of the plurality of chiller modules 12. The chiller modules 12 each include: a refrigeration circuit 14 and a free cooling circuit 16, wherein each re...

The present application relates to motor control technology, in particular to a method for controlling an asynchronous induction motor, a control device for implementing the method, a motor system including the control device, and a computer-readable storage medium on which a computer program for implementing th...

Valve assemblies are described having a valve positioner, a ball valve assembly configured to be actuated by the valve positioner between an open state and a closed state, an indicator configured to provide visual indication of the state of the ball valve assembly, and a positioning pin configured between the val...

A system and method for predicting ice gradient in refrigeration units is disclosed, comprising steps of capturing data pertaining to parameters of the refrigeration units, correlating the received parameters to generate characteristic features indicative of behaviour and performance of the one or more refrigerat...

Embodiments of a system to determine one or more corrective actions for one or more refrigeration units are disclosed. In one or more embodiments, the system comprises a server configured to generate a plurality of defrosting thermal models based on an analysis of a first set of data to generate a plurality of de...

System for self-regulated defrost operation of refrigeration unit(s) is disclosed. The system comprises a server configured to generate individual signatures corresponding to historic defrost events for the refrigeration units, where the individual signatures comprise pre-event defrost behavior and post-event def...

A method for identifying a state of a stream of refrigerant includes capturing a plurality of sample images of a sensor for sensing the stream of the refrigerant, processing each of the plurality of sample images to identify a first color indicative of a dry refrigerant and a second color indicative of a wet refr...

The present invention relates to an inlet guide vane (IGV) mechanism for a centrifugal compressor. The IGV mechanism comprises: a flow guide body having a front end section, a middle section and a rear end section, wherein the front end section, the middle section and the rear end section respectively have stream...

A refrigerated display cabinet, comprising: a refrigeration loop comprising a compressor, a condenser, a throttling element and an evaporator; a main body comprising a storage space, wherein the evaporator is for cooling the storage space and wherein at least one of the compressor, condenser and throttling elemen...

A heat exchanger includes a plurality of plate fins. At least one plate fin has a plurality of holes arranged in one or more rows and a contoured region formed adjacent one of the plurality of holes having a sinusoidal corrugation. The contoured region includes a plurality of elongate adjustable lance elements. T...

A tube bundle assembly includes at least one tube and a baffle. The baffle includes at least one hole for receiving the at least one tube. The at least one hole has a non- uniform diameter such that only a portion of a periphery of the at least one hole is positionable in contact with the at least one tube. ...

A refrigerated display cabinet includes a housing surrounding a plurality of shelves, a cabinet tank arranged beneath the plurality of shelves and a backwall channel positioned behind the plurality of shelves. The cabinet tank and the backwall channel cooperate to define an air passage. A micro-channel heat excha...

A portable hinge assembly includes a 1st support bracket removably fastened to a rear surface of a supporting plate of the cover assembly of the heat exchanger. The 1st support bracket includes a web portion having two slot portions such that each slot portion is adapted to align with a bolt opening of the supportin...

An air conditioning system includes a compressor including a motor, a condenser, and an evaporator; a drive including converter and an inverter, the converter and the inverter including power switching devices; a temperature sensor configured to sense a temperature in at least one of the converter and the inverte...

Provided are embodiments for a system and method for reforming an electrolytic capacitor. Embodiments can include disabling a primary switch, wherein the primary switch selectively couples a power supply to the electrolytic capacitor, and providing a signal to one or more reforming switches to control the one or ...

A cooling system for cooling at least one heat-generating electronic device includes a heat removal device having a surface that is thermally couplable to the at least one heat-generating electronic device. The heat removal device includes an inlet area and at least one jet impingement feature fluidly coupled to the...

A method of cooling an assembly including at least one heat-generating electronic device and at least one peripheral heat-generating device encapsulated within a container includes cooling the at least one peripheral heat-generating device with a first cooling medium, cooling the at least one heat-generating elec...