DESC:FIELD
The present disclosure relates to split type air conditioning systems.
DEFINITION
As used in the present disclosure, the following terms are generally intended to have the meaning as set forth below, except to the extent that the context in which they are used indicate otherwise.
Bent evaporator cooling coil – The term bent evaporator cooling coil means a plurality of coils forming a tube, and the tube having a bend or a nonlinear profile along its length. A refrigerant is configured to pass through the bent evaporator cooling coil so as to realize cooling effect of a space to which the bent evaporator cooling coil is exposed to.
BACKGROUND
The background information herein below relates to the present disclosure but is not necessarily prior art.
Air conditioning units currently available have to be customized for distinct applications. The applications include conditioning of air inside a rack room, a network room, a switch room, a UPS room, a battery room, an electrical room, a control room, a hub room, and ATM room or an industrial storage facility, where load on the air conditioning unit needs to be varied. This poses difficulty in installation as well as requires more space, which is undesirable. Additionally, flow of the conditioned air produced by existing air conditioning units is not uniform. This leads to inefficient cooling of the room space and may cause harm to the devices and cooling units being cooled. Moreover, the existing air conditioning units do not allow flexibility of installation apart from being mounted on a wall of the room being cooled.
There is, therefore felt a need for an evaporator unit of a split air conditioning system, which alleviates the above mentioned drawbacks.
OBJECTS
Some of the objects of the present disclosure, which at least one embodiment herein satisfies, are as follows:
An object of the present disclosure is to provide an evaporator unit of a split air conditioning system that offers precise air conditioning for a room.
Another object of the present disclosure is to provide an evaporator unit of a split air conditioning system that offers enhanced efficiency in obtaining cooling effect inside a room.
Still another object of the present disclosure is to provide an evaporator unit of a split air conditioning system that is mounted in various configurations as desired.
Other objects and advantages of the present disclosure will be more apparent from the following description, which is not intended to limit the scope of the present disclosure.
SUMMARY
The present disclosure relates to an evaporator unit of a split air conditioning system comprising a housing configured to be fitted inside a room to be air-conditioned. The housing is defined by a pair of opposite sidewalls having an air inlet and an air outlet, and another pair of planar sidewalls. The air inlet and the air outlet are configured on arcuate sidewalls. The housing includes a bent evaporator cooling coil and evaporator fans mounted on the base of the housing on an inner side. The evaporator unit further comprises attachments configured on an operative top surface of the housing to suspend the housing from the ceiling of the room in a spaced-apart configuration. The housing is configured to be in fluid communication with an outdoor unit which includes a compressor and a condenser. The evaporator unit is configured to supply conditioned air to the room via the housing.
In a preferred embodiment, the opposite pair of sidewalls have an arcuate shape to allow dispensing of conditioned air through the evaporator unit abutting the wall of the room.
In a preferred embodiment, the bent evaporator cooling coil is positioned proximal to the air inlet, the evaporator fans are positioned centrally to the housing and the humidifier is positioned proximal to the air outlet.
In an alternate embodiment, at least one heater is mounted proximal to the evaporator cooling coil and configured to heat the supply of conditioned air through the evaporator cooling coil.
In another embodiment, the housing is made of a rigid metallic material to provide increased strength to the housing.
In a preferred embodiment, a multi-slot suspension channel is configured on the housing to provide flexibility for installation of the attachments on a field location.
In a preferred embodiment, an industrial grade air filter is attached to the air inlet to provide filtering of room air that needs to be conditioned.
In yet another embodiment, a quick-fix mechanism is attached to the air filter to enable ease of servicing of the air filter.
In a preferred embodiment, an operative bottom surface of the housing enables resting of the housing on a flat surface such as a rack top.
In a preferred embodiment, a sloped drain tray is attached to a bottom portion of the bent evaporative coil to enable ease of draining of the condensate formed therein.
In a preferred embodiment, a clog sensor is attached to the air filter to sense condition of the filter and provide a signal.
In a preferred embodiment, a fire and smoke detector is provided on the evaporator unit to sense and signal incidence of fire and smoke emanating from the room.
In a preferred embodiment, a drain pump is provided on the evaporator unit to evacuate the condensate formed therein.
In a preferred embodiment, the evaporator fans are electrically commutated fans.
In a preferred embodiment, a remote controller is configured to be in electronic communication with the evaporator unit to enable controlling the operation of the evaporator unit from a remote location.
In another embodiment, a plurality of evaporator units is configured to be mounted at different locations in the room.
In a preferred embodiment, the parameters monitored and controlled by the evaporator unit includes return air temperature, supply air temperature, relative humidity, sensor temperature.
In still another embodiment, a plurality of evaporator units is configured to be in fluid communication with a single outdoor unit including the compressor and the condenser.
In an alternate embodiment, a double deflector grill is configured on the air outlet for routing the supply of conditioned air through ducts. The double deflector grill is configured to change direction of draught of conditioned air there through.
In an embodiment, the angle of bend is an obtuse angle that varies between 90 degrees and 135 degrees.
BRIEF DESCRIPTION OF ACCOMPANYING DRAWING
An evaporator unit of a split air conditioning system, of the present disclosure will now be described with the help of the accompanying drawing, in which:
Figure 1 shows a schematic of an evaporator unit of a split air conditioning system, in an embodiment of the present disclosure;
Figure 2 shows an isometric view of the evaporator unit of the Figure 1 illustrating internal components of the evaporator unit;
Figure 3 shows another isometric view of the evaporator unit of the Figure 1;
Figure 4 shows yet another isometric view of the evaporator unit of the Figure 1;
Figure 5 shows an isometric view of the evaporator unit suspended from the ceiling of a room, in another embodiment of the present disclosure;
Figure 6 shows an isometric view of the evaporator unit configured with duct passages inside the room, in yet another embodiment of the present disclosure;
Figure 7 shows an isometric view of the evaporator unit configured to be installed on top of a rack inside the room, in still another embodiment of the present disclosure; and
Figure 8 shows a schematic view of a split air conditioning system with a plurality of evaporator units, in another embodiment of the present disclosure.
LIST OF REFERENCE NUMERALS USED IN DETAILED DESCRIPTION AND DRAWING
1 – outdoor unit
2 – mounting floor
3 – condensate drain pipe
4 – wall
6 – seal for pipe protection through wall
7 – liquid line
8 – gas line
12 – bent evaporator cooling coil
14 - evaporator fans
16 – air heater
18 – humidifier
20 – air inlet
21 – air filter
22 – air outlet
23 – double deflector grill
24 – water inlet
26 – water outlet
28 – service valve
50 – evaporator unit
51 – housing
52 – operative top surface
54 – operative bottom surface
60 – duct
70 – attachment
80 – rack
100 – split air conditioning system
1000, 2000, 3000 – room
DETAILED DESCRIPTION
Embodiments, of the present disclosure, will now be described with reference to the accompanying drawing.
Embodiments are provided so as to thoroughly and fully convey the scope of the present disclosure to the person skilled in the art. Numerous details are set forth, relating to specific components, and methods, to provide a complete understanding of embodiments of the present disclosure. It will be apparent to the person skilled in the art that the details provided in the embodiments should not be construed to limit the scope of the present disclosure. In some embodiments, well-known processes, well-known apparatus housings, and well-known techniques are not described in detail.
The terminology used, in the present disclosure, is only for the purpose of explaining a particular embodiment and such terminology shall not be considered to limit the scope of the present disclosure. As used in the present disclosure, the forms "a,” "an," and "the" may be intended to include the plural forms as well, unless the context clearly suggests otherwise. The terms "comprises," "comprising," “including,” and “having,” are open ended transitional phrases and therefore specify the presence of stated features, elements, modules, units and/or components, but do not forbid the presence or addition of one or more other features, elements, components, and/or groups thereof.
Referring to the figures 1-7 an evaporator unit 50 of a split air conditioning system 100 is shown. The evaporator unit 50 comprises a housing 51 configured inside a room to be air-conditioned. The housing 51 includes a bent evaporator cooling coil 12 and evaporator fans 14 mounted on the base of the housing 51 on an inner side of the housing 51. The attachments 70 are configured on an operative top surface 52 of the housing 51 to suspend the housing 51 from the ceiling of the room in a spaced-apart configuration. In another embodiment, an operative bottom surface 54 of the housing 51 enables resting of the housing 51 on a flat surface such as a rack top. The housing 51 is configured to be in fluid communication with an outdoor unit 1 which includes a compressor and a condenser. The evaporator unit 50 facilitates supply of conditioned air to the room via the housing 51. An air inlet 20 and an air outlet 22 is configured on a pair of oppositely space arcuate sidewalls of the housing 51. The opposite pair of sidewalls have a curved shape to allow dispensing of conditioned air through the evaporator unit 50 in case the evaporator unit 50 abuts the wall 4 of the room 1000. The housing 51 has another pair of oppositely spaced sidewalls that are planar. This facilitates unrestricted passage of the conditioned air even though the evaporator unit 50 adjoins the wall 4 of the room 1000. The bent evaporator cooling coil 12 is positioned proximal to the air inlet 20. The evaporator fans 14 are positioned centrally to the housing 51. The humidifier 18 is positioned proximal to the air outlet 22. The humidifier 18 facilitates increasing humidity of the conditioned space of the room as desired by a user. At least one heater 16 is mounted proximal to the evaporator cooling coil 12 and configured to heat the supply of conditioned air passing through the evaporator cooling coil 12. The air heater 16 facilitates reheating of the air draught to be supplied to the room in case excessive cooling effect is realized. The bent evaporator cooling coil 12 has bends or a nonlinear profile configured along the length of the bent evaporator cooling coil 12. In an embodiment, the angle of bend has an obtuse angle that varies between 90 degrees and 135 degrees.
In an embodiment, the housing 51 is made of a rigid metallic material to provide increased strength to the housing 51. This guards the evaporated unit 50 against detrimental vibrations that are incident during its working.
In another embodiment, a multi-slot suspension channel not shown in figures is configured on the housing 51 to provide flexibility for installation of the attachments 70 on a field location. In conventional evaporator units, a single slot mounting bracket is provided for suspending the evaporator units from the ceiling of a room. However, with a single slot mounting bracket, the flexibility of installation of the evaporator unit is compromised.
An industrial grade air filter 21 is attached to the air inlet 20 to provide filtering of room air that needs to be conditioned. In an embodiment, a plurality of air filters 21 are provided. A quick-fix mechanism not shown in figures is attached to the air filter 21 to enable ease of servicing of the air filter 21. A sloped drain tray is attached to a bottom portion of the bent evaporative coil 12 to enable ease of draining of the condensate formed therein. A clog sensor is attached to the air filter 21 to sense condition of the filter 21 and provide a signal to facilitate servicing and maintenance of the air filter 21. A fire and smoke detector is provided on the evaporator unit 50 to sense and signal incidence of fire and smoke emanating from the room. A drain pump is provided on the evaporator unit 50 to evacuate the condensate formed therein. A water inlet 24, a water outlet 26 and service valves 28 are attached to the sidewalls of the evaporator unit 50 for exchanging fluids between the evaporator unit 50 and the outdoor unit 1.
In an embodiment, the evaporator fans 14 are electrically commutated fans.
A remote controller is configured to be in electronic communication with the evaporator unit 50 to enable controlling the operation of the evaporator unit 50 from a remote location. This facilitates ease of operation.
In another embodiment, a plurality of evaporator units 50 is configured to be mounted at different locations in the room while only a single outdoor unit 1 is configured to be in fluid communication with the plurality of evaporator units 50. This facilitates contingency based sequencing and schedule based sequencing.
The parameters monitored and controlled by the evaporator unit 50 includes return air temperature, supply air temperature, relative humidity, sensor temperature.
The outdoor unit 1 is mounted on a mounting floor 2. The evaporator unit 50 and the outdoor unit 1 are connected across a wall 4 of a room. A condensate drain pipe 3 is configured on the evaporator unit 50 for the discharge of condensate extracted from the room on account of air conditioning. A seal 6 for pipe protection through the wall 4 ensures thermal isolation of the room from the outdoor environment. A liquid line 7 and a gas line 8 facilitate flow of the refrigerant between the outdoor unit 1 to the evaporator unit 50.
In a preferred embodiment, the evaporator cooling coil 12 of the indoor unit 50 is configured in a double lambda shape design. This facilitates higher air flow rate with minimum resistance. Additionally, the heat transfer area available is increased by 15% when compared to a flat evaporator coil.
In an embodiment, the housing 51 has a distinct top and a bottom door which facilitates service access during different installation modes. The housing 51 metallic body includes a structural skeleton and covering panels. The structural skeleton is constructed to absorb static and dynamic loads of components. During servicing or maintenance, the covering panels can be easily removed without disturbing key operational components which are mounted on the structural skeleton. This facilitates ease of servicing of the cooling unit 100.
In an embodiment, the air inlet 20 of the evaporator unit 50 is configured in three sectors. The sectored air inlet 20 allows room air entry into the evaporator unit 50 in case the evaporator unit 50 is installed proximal to the wall 4 of the room on return air side.
In an embodiment, the air filters 20 are configured with pre-air filters (not shown in any figure) to facilitate additional filtering of the air being conditioned. The pre-air filters also facilitate filtering of the air being conditioned in highly dusty environment.
The housing 51 is configured with an inclined fan mounting plate that facilitates supply of air draught via a double deflector grill 23. In an embodiment, the double deflector grill 23 is configured to supply air draught into twelve different directions. This facilitates increased aerodynamic performance and low noise by optimizing air resistance.
The evaporator unit 50 is configured to be installed in the room in various configurations (as shown in the figures 5-7) as desired for a particular application. In an embodiment (as shown in the figure 5), the evaporator unit 50 is configured to be suspended from the ceiling of the room 1000 with the help of the attachments 70 in the form of studs.
In another embodiment (as shown in the figure 6), the evaporator unit 50 is configured to be suspended from the ceiling of the room 2000 in fluid communication with ducts 60, thereby conditioning the air circulated in the room 2000 by the ducts 60.
In yet another embodiment (as shown in the figure 7), the evaporator unit 50 is configured to be installed on the top of a rack 80 in the room 3000.
In an embodiment, the double deflector grill 23 is configured to be adapted to ducts 60 and duct accessories like duct collar.
In an embodiment, the cooling unit 100 is configured with a corded remote.
In an embodiment, the cooling unit 100 is configured to a plurality of control logics. The control logics facilitates return air temperature control, remote sensor temperature control and supply temperature control, contrary to obtaining control of return air temperature of a conventional cooling unit.
In an embodiment, the split air conditioning system 100 is configured to work on a variable refrigerant volume platform having a plurality of evaporator units 50 connected to a single outdoor unit 1. In the figure 8, two evaporator units 50 are shown to occupy different locations in the room.
The foregoing description of the embodiments has been provided for purposes of illustration and not intended to limit the scope of the present disclosure. Individual components of a particular embodiment are generally not limited to that particular embodiment, but, are interchangeable. Such variations are not to be regarded as a departure from the present disclosure, and all such modifications are considered to be within the scope of the present disclosure.
TECHNICAL ADVANCES AND ECONOMICAL SIGNIFICANCE
The present disclosure described herein above has several technical advantages including, but not limited to, the realization of an evaporator unit of a split air conditioning system for that:
• is versatile so as to be suitable for various applications;
• offers efficient control in conditioning air in a room; and
• is compatible with various mounting methods as desired.
The foregoing description of the specific embodiments so fully reveals the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the spirit and scope of the embodiments as described herein.
Throughout this specification the word “comprise”, or variations such as “comprises” or “comprising”, will be understood to imply the inclusion of a stated element, step, or group of elements, steps, but not the exclusion of any other element, step, or group of elements, or steps.
While considerable emphasis has been placed herein on the components and component parts of the preferred embodiments, it will be appreciated that many embodiments can be made and that many changes can be made in the preferred embodiments without departing from the principles of the disclosure. These and other changes in the preferred embodiment as well as other embodiments of the disclosure will be apparent to those skilled in the art from the disclosure herein, whereby it is to be distinctly understood that the foregoing descriptive matter is to be interpreted merely as illustrative of the disclosure and not as a limitation.
,CLAIMS:WE CLAIM:

1. An evaporator unit (50) of a split air conditioning system (100), said evaporator unit (50) comprising:
• a housing (51) configured to be fitted inside a room (1000) to be air-conditioned, said housing (51) defined by a pair of oppositely spaced arcuate sidewalls having an air inlet (20) and an air outlet (22), and another pair of planar sidewalls, said housing (51) including a bent evaporator cooling coil (12) and evaporator fans (14) mounted on the base of said housing (51) on an inner side; and
• attachments (70) configured on an operative top surface (52) of said housing (51) to suspend said housing (51) from the ceiling of the room in a spaced-apart configuration;
said housing (51) being configured to be in fluid communication with an outdoor unit (1) which includes a compressor and a condenser, said evaporator unit (50) configured to supply conditioned air to the room (1000) via said housing (51).
2. The evaporator unit (50) as claimed in claim 1, wherein said bent evaporator cooling coil (12) is positioned proximal to said air inlet (20), said evaporator fans (14) is positioned centrally to said housing (51) and said humidifier (18) positioned proximal to said air outlet (22).
3. The evaporator unit (50) as claimed in claim 1, wherein at least one heater (16) is mounted proximal to said evaporator cooling coil (12) and configured to heat the supply of conditioned air through the evaporator cooling coil (12).
4. The evaporator unit (50) as claimed in claim 1, wherein said housing (51) is made of a rigid metallic material to provide increased strength to said housing (51).
5. The evaporator unit (50) as claimed in claim 1, wherein a multi-slot suspension channel (not shown in figures) is configured on said housing (51) to provide flexibility for installation of said attachments (70) on a field location.
6. The evaporator unit (50) as claimed in claim 1, wherein an industrial grade air filter (21) is attached to said air inlet (20) to provide filtering of room air that needs to be conditioned.
7. The evaporator unit (50) as claimed in claim 1, wherein a quick-fix mechanism (not shown in figures) is attached to said air filter (21) to enable ease of servicing of said air filter.
8. The evaporator unit (50) as claimed in claim 1, wherein an operative bottom surface (54) of said housing (51) enables resting of said housing (51) on a flat surface such as a rack top.
9. The evaporator unit (50) as claimed in claim 1, wherein a sloped drain tray is attached to a bottom portion of said bent evaporative coil (12) to enable ease of draining of the condensate formed therein.
10. The evaporator unit (50) as claimed in claim 1, wherein a clog sensor is attached to said air filter to sense condition of said filter and provide a signal.
11. The evaporator unit (50) as claimed in claim 1, wherein a fire and smoke detector is provided on said evaporator unit (50) to sense and signal incidence of fire and smoke emanating from the room.
12. The evaporator unit (50) as claimed in claim 1, wherein a drain pump is provided on said evaporator unit (50) to evacuate the condensate formed therein.
13. The evaporator unit (50) as claimed in claim 1, wherein said evaporator fans (14) are electrically commutated fans.
14. The evaporator unit (50) as claimed in claim 1, wherein a remote controller is configured to be in electronic communication with said evaporator unit (50) to enable controlling the operation of the evaporator unit (50) from a remote location.
15. The evaporator unit (50) as claimed in claim 1, wherein a plurality of evaporator units (50) is configured to be mounted at different locations in the room.
16. The evaporator unit (50) as claimed in claim 1, wherein the parameters monitored and controlled by said evaporator unit (50) includes return air temperature, supply air temperature, relative humidity, sensor temperature.
17. The evaporator unit (50) as claimed in claim 1, wherein a plurality of evaporator units (50) is configured to be in fluid communication with a single outdoor unit including the compressor and the condenser.
18. The evaporator unit (50) as claimed in claim 1, wherein a double deflector grill (23) is configured on the air outlet (22) for routing the supply of conditioned air through ducts (60), said double deflector grill (23) configured to change direction of draught of conditioned air there through.
19. The evaporator unit (50) as claimed in claim 1, wherein said bent evaporator cooling coil (12) has bends or a nonlinear shape configured along the length of said bent evaporator cooling coil (12).
20. The evaporator unit (50) as claimed in claim 1, wherein the angle of bend has an obtuse angle that varies between 90 degrees and 135 degrees.
Dated this 3rd day of December, 2021

_______________________________
MOHAN RAJKUMAR DEWAN, IN/PA – 25
of R.K.DEWAN & CO.
Authorized Agent of Applicant

TO,
THE CONTROLLER OF PATENTS
THE PATENT OFFICE, AT MUMBAI