[001] The present subject matter described herein, a heating and cooling device, and more particularly to an improved form of air and water cooling and heating device with four-way solenoid valve control unit.

BACKGROUND AND PRIOR ART AND PROBLEM IN PRIOR ART:
[002] Background description includes information that may be useful in understanding the present invention. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed invention, or that any publication specifically or implicitly referenced is prior art.

[003] Summers & Winters, anywhere in the world require different devices to create required comfort for human being. During summers when the temperatures are high, the room ambient needs to be cooled down to arrive at a desired comfort level. Whereas, during winters when the temperatures are low, the same room ambient needs to be heated to create a comfortable ambience. Similarly, winter months require the water to be heated up for bath and other non-drinking applications and summer months require cooling of the same for handling it comfortably.

[004] It is desirable in coming times, that the lesser the devices in a living space the better it is. More number of devices creates maintenance issues and infrastructure issues. To achieve sustainable infrastructure, it is preferred that the devices with similar principle of working and which requires principally related mechanical and electrical components shall be merged in one unit. Thus offering user convenience in life and sustainability.

[005] Therefore, the present invention identifies a long felt need of the market and an address to an unresolved problem of combining a device to provide heating, cooling effect for air and water in one singular device. The combination of heating, cooling device for air and water is controlled by a four-way valve with principally similar components aiding the technology for both heating, cooling of air and water.

[006] The information disclosed in this background of the disclosure section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

[007] These and other objects and advantages of the present subject matter will be apparent to a person skilled in the art after consideration of the following detailed description taken into consideration with accompanying drawings in which preferred embodiments of the present subject matter are illustrated.

SUMMARY OF THE INVENTION:
[008] Solution to one or more drawbacks of existing device, and additional advantages are provided through the present device and method as disclosed in the present disclosure. Additional features and advantages are realized through the technicalities of the present disclosure. Other embodiments and aspects of the disclosure are described in detail herein and are considered to be a part of the claimed disclosure.

[009] The present disclosure relates to a device including a compressor, a first four-way valve, a second four-way valve, an indoor heat exchanger, a third four-way valve, an expansion valve, an outdoor heat exchanger, a water tank. The compressor is configured to compress a refrigerant to produce a refrigerant with high temperature and high pressure. The first four-way valve is coupled to the compressor and is configured to control the flow of the refrigerant flowing out or in to the compressor. The second four-way valve is coupled with the first four-way valve in series and is configured to directing the refrigerant flowing. The indoor heat exchanger is coupled with the second four-way valve and is configured to exchange heat from the refrigerant flowing. The third four-way valve is coupled with the indoor heat exchanger and is configured to directing the refrigerant flowing. The expansion valve is coupled with the third four-way valve and is configured to regulating pressure on the refrigerant flowing. The outdoor heat exchanger is coupled with the first four-way valve and the expansion device and is configured to exchange heat from the refrigerant flowing. The water tank is coupled with second and third four-way valve and is configured to exchange heat from the refrigerant flowing. The device as claimed in claim 1 wherein, the compressor discharges the refrigerant with high temperature and high pressure in gaseous state to the first four-way valve though a port 6A.

[0010] In an aspect of the invention, the first four-way valve is in ON position, thus connecting the port 6A with a port 6C and a port 6B with a port 6D. The first four-way valve transfer the refrigerant with high temperature and high pressure in gaseous state through a port 6C to the second four-way valve through a port 7A. The second four-way valve is OFF position thus connecting the port 7A with a port 7D and a port 7B with a port 7C. The second four-way valve transfers the refrigerant through the port 7D into the indoor heat exchanger.

[0011] In an aspect of the invention, the refrigerant loses heat in the indoor heat exchanger resulting into room heating and converting the refrigerant into warm liquid state. The indoor heat exchanger transfers the refrigerant to the third four-way valve through a port 8C.

[0012] In an aspect of the invention, the third four-way valve is in ON position, thus connecting a port 8A with the port 8C and a port 8B with a port 8D. The third four-way valve transfers the refrigerant through the port 8A into the expansion device.

[0013] In an aspect of the invention, the expansion device regulating the pressure of the refrigerant to convert the state of refrigerant into cold temperature low pressure state. The expansion device transfers the refrigerant in cold low pressure state into the outdoor heat exchanger.

[0014] In an aspect of the invention, the refrigerant absorbs heat in the outdoor heat exchanger from the outside air converting the refrigerant into low pressure gaseous state. The outdoor heat exchanger transfers the refrigerant to the first four-way valve though port 6D.

[0015] In an aspect of the invention, the first four-way valve port transfers the refrigerant in low pressure gaseous state though port 6D into the compressor through a compressor suction port 1B.

[0016] In another aspect of the invention, the second four-way valve is in ON position thus connecting the port 7A with the port 7C and the port 7B with the port 7D. The second four-way valve transfers the refrigerant through the port 7C into the water tank.

[0017] In an aspect of the invention, the refrigerant loses heat in the water tank resulting into water heating and converting the refrigerant into warm liquid state. The water tank transfers the refrigerant to the third four-way valve through a port 8D.

[0018] In an aspect of the invention, the third four-way valve is in OFF position, thus connecting the port 8A with the port 8D and the port 8B with the port 8C. The third four-way valve transfers the refrigerant through the port 8A into the expansion valve.

[0019] In an aspect of the invention, the expansion device transfers the refrigerant in cold low pressure state into the outdoor heat exchanger. The refrigerant absorbs heat in the outdoor heat exchanger from the outside air converting the refrigerant into low pressure gaseous state. In an aspect of the invention, the outdoor heat exchanger transfers the refrigerant to the first four-way valve though the port 6D.

[0020] In an aspect of the invention, the first four-way valve port transfers the refrigerant in low pressure gaseous state though port 6B into the compressor through a compressor suction port 1B.

[0021] In an aspect of the invention, a hydraulic valve coupled to the water tank configured to control the flow of water. The hydraulic valve is in UP position thus, the inlet cold water flows from W1 to W3 and the hot water flows from W4 to W2.

[0022] In another aspect of the invention, the first four-way valve is in OFF position, thus connecting the port 6A with the port 6D and the port 6B with the port 6C. The first four-way valve transfer the refrigerant through a port 6D into the outdoor heat exchanger. The refrigerant loses heat in the outdoor heat exchanger converting the refrigerant into high pressure warm liquid state.

[0023] In an aspect of the invention, the outdoor heat exchanger transfers the refrigerant to the expansion device. The expansion device regulating the pressure of the refrigerant to convert the state of refrigerant into cold temperature and low pressure state. The expansion device transfers the refrigerant to the third four-way valve through a port 8A.

[0024] In another aspect of the invention, the third four-way valve is in ON position, thus connecting the port 8A with the port 8C and a port 8B with a port 8D. The third four-way valve transfers the refrigerant through the port 8C into the indoor heat exchanger.

[0025] In an aspect of the invention, the refrigerant absorbs heat from the air in the indoor heat exchanger resulting into room cooling and converting the refrigerant into low pressure gas state. The indoor heat exchanger transfers the refrigerant to the second four-way valve through port 7D.

[0026] In yet another aspect of the invention, the second four-way valve is in OFF position thus connecting the port 7A with the port 7D and the port 7B with the port 7C. The second four-way valve transfers the refrigerant through the port 7A into the first four-way valve through port 6C. The first four-way valve port transfers the refrigerant in low pressure gaseous state though port 6B into the compressor through the compressor suction port 1B.

[0027] In another aspect of the invention, the third four-way valve is in OFF position, thus connecting the port 8A with the port 8D and the port 8B with the port 8C. The third four-way valve transfers the refrigerant through the port 8D to the water tank.

[0028] In an aspect of the invention, the refrigerant absorbs heat from the water tank resulting into water cooling water cooling in the water tank and converting the refrigerant into low pressure gas. The water tank transfers the refrigerant to the second four-way valve through port 7C.

[0029] In an aspect of the invention, the second four-way valve is in ON position thus connecting the port 7A with the port 7C and the port 7B with the port 7D. The second four-way valve transfers the refrigerant through the port 7A into the first four-way valve through port 6C. The first four-way valve port transfers the refrigerant in low pressure gaseous state though port 6B into the compressor through the compressor suction port 1B.

[0030] In an aspect of the invention, the hydraulic valve is in DOWN position thus, the inlet hot water flows from W1 to W4 and the cold water flows from W3 to W2.
[0031] The foregoing summary is illustrative only and is not intended to be in any way limiting. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features will become apparent by reference to the drawings and the following detailed description.

BRIEF DESCRIPTION OF THE DRAWINGS
[0032] It is to be noted, however, that the appended drawings illustrate only typical embodiments of the present subject matter and are therefore not to be considered for limiting of its scope, for the invention may admit to other equally effective embodiments. The detailed description is described with reference to the accompanying figures. In the figures, a reference number identifies the figure in which the reference number first appears. The same numbers are used throughout the figures to reference like features and components. Some embodiments of system or methods or structure in accordance with embodiments of the present subject matter are now described, by way of example, and with reference to the accompanying figures, in which:

[0033] Fig. 1 is a schematic representation of the components of the present invention.

[0034] Fig. 2 is layout of the flow control circuit of the four-way valve.

[0035] Fig. 3 is illustration of (a) Off mode of the four-way valve (b) On-mode of the four-way valve.

[0036] Fig. 4 is an illustration of the water tank, heating element and the hydraulic valve of the present invention.

[0037] Fig. 5 is a layout view of the room heating mode of the present invention.

[0038] Fig. 6 is a layout view of the water heating mode of the present invention.
[0039] Fig. 7 is a layout view of the room cooling mode of the present invention.

[0040] Fig. 8 is a layout view of the water cooling mode of the present invention.

[0041] The figures depict embodiments of the present subject matter for the purposes of illustration only. A person skilled in the art will easily recognize from the following description that alternative embodiments of the structures and methods illustrated herein may be employed without departing from the principles of the disclosure described herein.

DESCRIPTION OF THE PREFERRED EMBODIMENTS:
[0042] While the embodiments of the disclosure are subject to various modifications and alternative forms, specific embodiment thereof have been shown by way of example in the figures and will be described below. It should be understood, however, that it is not intended to limit the disclosure to the particular forms disclosed, but on the contrary, the disclosure is to cover all modifications, equivalents, and alternative falling within the scope of the disclosure.

[0043] The terms “comprises”, “comprising”, or any other variations thereof used in the disclosure, are intended to cover a non-exclusive inclusion, such that a device, system, assembly that comprises a list of components does not include only those components but may include other components not expressly listed or inherent to such system, or assembly, or device. In other words, one or more elements in a system or device proceeded by “comprises… a” does not, without more constraints, preclude the existence of other elements or additional elements in the system or device.

[0044] Referring to figure 1 to 8 of the present invention, describes a device for heating, cooling of air and water.

[0045] In an embodiment of the present invention, referring to Fig.1 to 8, the components are identified as follows:

1 COMPRESSOR
1A COMPRESSOR DISCHARGE
1B COMPRESSOR SUCTION
2 OUTDOOR HEAT EXCHANGER
3 EXPANSION VALVE
4 INDOOR HEAT EXCHANGER
5 WATER TANK
5’ WATER TANK HEAT EXCHANGER
6 FIRST FOUR-WAY VALVE
6A,6B,6C,6D FOUR PORTS OF FIRST FOUR-WAY VALVE
7 SECOND FOUR-WAY VALVE
7A,7B,7C,7D FOUR PORTS OF SECOND FOUR-WAY VALVE
8 THIRD FOUR-WAY VALVE
8A,8B,8C,8D FOUR PORTS OF THIRD FOUR-WAY VALVE
9 HYDRAULIC VALVE
W1 WATER INLET PIPE FROM OVERHEAD TANK
W2 WATER OUTLET PIPE FOR USAGE
W3 WATER TANK COLD WATER PIPE
W4 WATER TANK HOT WATER PIPE

[0046] The present invention provides a device for heating, cooling of air and water simultaneously or in independent modes as an aspect of the invention. The four independent modes of the present device are:
a) Room Cooling
b) Water Cooling
c) Room heating
d) Water heating
[0047] The present invention achieves the four different modes using a four-way valve or a solenoid valve combination. Referring to Fig.2 three (3) four-way valve are coupled to form a control circuit of managing the flow of refrigerant throughout the device and deliver heating, cooling effect in air and water.

[0048] It is to be understood that the major principle components of the present device as follows:
a) Compressor: The main role of compressor is to compress the low pressure and low temperature gaseous refrigerant from evaporator to a high pressure and high temperature gaseous refrigerant. This takes the gas to a temperature higher than the surrounding temperature to condenser, where heat is to be rejected to make the refrigerant ready to absorb the heat and evaporate again.
b) Heat Exchanger(s): Primarily heat exchange is taking place in two parts in a typical refrigeration system i.e. evaporator and condenser. Heat exchange in evaporator is through the low pressure and low temperature liquid refrigerant (or liquid-vapor mixture) absorbing heat from a heat source (outdoor ambience) or the area/object that needs to be cooled. This absorption of heat evaporates the refrigerant to gaseous state leading to significant increase in quantum of heat exchange. Heat exchange in Condenser is through the high pressure and high temperature refrigerant from the compressor loosing heat to surrounding. The heat is lost to heat sink (outdoor atmosphere) or the area/ object which to be heated (room/water). This results in condensation of the gaseous refrigerant to liquid state.
c) Throttling Device/Expansion Device: The throttling device (or expansion device) is used for reducing the pressure (and hence the temperature) of the high pressure refrigerant from the condenser. This is achieved by restricting the refrigerant flow through a small opening. This low temperature refrigerant now becomes capable of absorbing heat from area / object to be cooled.
d) Three Pilot Operated Four-Way Solenoid Valves: The pilot operated four-way solenoid valves are simply 4/2 valves (4 way/2 positions) with 4 ports and two states. Referring to Fig.3 four ports are A, B, C and D. There is bush 34, inside the valve that has two states. In one state, the bush closes ports B and C. This leaves the ports A and D connected. In the other state, the bush closes ports B and D which leaves the ports A and C connected. This switching of position of the bush is achieved by creating pressure difference between both ends of the part, which helps to push the bush to the desired state. 31 represents the pilot connection, 32 represents the pilot valve, 33 represents the solenoid, 34 represents the bush.

[0049] In the present invention, the principle working of the device is corroborated using the following understanding:

a) Water heating mode: Referring to Fig.6, in this mode, the high pressure hot gaseous refrigerant from the compressor discharge is directed to the water tank, where the refrigerant undergoes phase change to liquid by releasing its latent heat to the cold water. This heat is taken by the water as sensible heat, due to the temperature difference between water and refrigerant, resulting in increase in its temperature. This results in water heating.
b) Room heating mode: Referring to Fig.5, in this mode, the high pressure hot gaseous refrigerant from the compressor discharge is directed to the indoor evaporator, where the refrigerant releases its heat to the cold indoor air, due to temperature difference, thereby undergoing phase change to liquid. This heat is taken by the air as sensible heat resulting in hot air discharge. This results in room heating.
c) Water cooling mode: Referring to Fig.8, in this mode, the low pressure cold liquid refrigerant from the expansion device is directed to the water tank. Due to the temperature difference, heat flows from the hot water to the cold refrigerant thereby cooling the water down and changing the phase of the refrigerant to vapour. This results in water cooling.
d) Room cooling mode: Referring to Fig.7, in this mode, the low pressure cold liquid refrigerant from the expansion device (capillary tube) is directed to the indoor evaporator. Due to the temperature difference, heat flows from the hot indoor air to the cold refrigerant thereby cooling the air down and changing the phase of the refrigerant to vapour. This results in room cooling.

[0050] In the present invention, the different modes are operated together or individually by controlling the flow of refrigerant. A control circuit of the present invention device is developed with an integrated water tank, as shown in figure 4 and new flow control circuit as shown in figure 2. Referring to Fig.2, the flow control circuit consists of first, second and third pilot operated four-way valves used as solenoid valves. These valves have two positions for ON and OFF condition of the solenoid valve as shown in figure 3. First Four-way valve (6) is responsible for changing the mode between heating and cooling. Second (7) and third (8) four-way valve are used to direct the refrigerant to either room or water tank as per requirement. In order to achieve refrigerant flow to achieve the four basic outputs, the three four-way valves are set ON and OFF in a specific manner. The refrigerant flow and the valve positions in the four different modes of operation are explained in figure 5-8.

[0051] Referring to figure 1, the circuit has been made in such a way that, when all the three valves are in off position, both the evaporator and the water tank coil get connected in series. This is important during the initial nitrogen flushing, vacuuming and refrigerant charging for covering the complete system. Otherwise, either the evaporator or the coil would form a closed loop and get isolated, resulting in improper flushing.

[0052] The pilot operated four-way valves work on differential pressures. A pilot valve mounted on the four-way valve takes differential pressure from ports A (high pressure) and B (low pressure) of the reversing valve itself. Since second four-way valve (7) and third four-way valve (8) do not have different pressures at ports A and B which is needed for its operation, the differential pressure is taken from different points. The pilot connections from the ports A and B of the second four-way valve and third four-way valve are connected to points a and b respectively as shown in figure 1.

[0053] Referring to Fig.4, further in the device of the present invention, a novel water tank (5) is designed with the refrigeration coil extending from top to the bottom of the tank. Also a 4/2 direction control hydraulic valve is attached with the tank to direct the cold and hot water accordingly. During summer, the inlet water from the overhead tank is hot. With the 4/2 valve at its initial position, the hot water is directed to the top of the tank. As shown in figure 4a, the cold refrigerant directly flows to the top of the tank and then flows down so as to have maximum cooling at the top of the tank. This ensures convective cooling of the complete water in the tank. The resulting cold water is drawn from the bottom of the tank.

[0054] During winter, there is cold water inlet to the tank. The valve is now moved to the second position such that this cold water gets directed to the bottom of the tank and hot water from the top of the tank could be drawn out. As shown in figure 4b, the hot refrigerant flows from the bottom to the top so as to have maximum heating at the bottom of the tank. This ensures convective heating of the complete water in the tank. This hence facilitates the use of a single tank and single coil for achieving both heating and cooling of water.

[0055] Referring to the Fig.5, of the present invention, the room heating mode is achieved by flowing the refrigerant in a specific path. The hot high pressure refrigerant from the compressor discharge 1A flows to Solenoid Valve 6 through the port 6A. The solenoid valve 6 is in ON position; hence ports 6A and 6C are connected and ports 6B and 6D are connected. From 6A, the hot refrigerant flows to port 6C and to Solenoid Valve 7 through port 7A. Solenoid valve 7 is in OFF position (7A and 7D are connected; 7B and 7C are connected). The refrigerant flows to port 7D and to the Indoor Heat Exchanger 4. It loses its heat in the HE 4 (thus achieving room heating). From Indoor Heat Exchanger 4, the warm liquid refrigerant now flows to port 8C of Solenoid valve 8 which is in ON position (8A and 8C are connected; 8B and 8D are connected). From 8C it flows to port 8A from which it flows to the Expansion Valve 3. From Expansion valve 3, cold low pressure refrigerant flows to Outdoor Heat Exchanger 2 where it absorbs heat from outside air and becomes low pressure gas. The low pressure gaseous refrigerant from Outdoor Heat Exchanger 2 flows to port 6D of Solenoid valve 6. From 6D, it flows to port 6B from which it flows to the compressor suction port 1B.

[0056] Referring to the Fig.6, of the present invention, the water heating mode is achieved by flowing the refrigerant in a specific path. The hot high pressure refrigerant from the compressor discharge 1A flows to Solenoid Valve 6 through the port 6A. The solenoid valve 6 is in ON position; hence ports 6A and 6C are connected and ports 6B and 6D are connected. From 6A, the hot refrigerant flows to port 6C and to Solenoid Valve 7 through port 7A. Solenoid valve 7 is in ON position (7A and 7C are connected; 7B and 7D are connected). The refrigerant flows to port 7C and to Water Tank Heat Exchanger 5’. It loses its heat in the HE 5’ (thus achieving water heating). From Water Tank Heat Exchanger 5’, the warm liquid refrigerant now flows to port 8D of Solenoid valve 8 which is in OFF position (8A and 8D are connected; 8B and 8C are connected). From 8D it flows to port 8A from which it flows to the Expansion Valve 3. From Expansion valve 3, cold low pressure refrigerant flows to Outdoor Heat Exchanger 2 where it absorbs heat from outside air and becomes low pressure gas. The low pressure gaseous refrigerant from Outdoor Heat Exchanger 2 flows to port 6D of Solenoid valve 6. From 6D, it flows to port 6B from which it flows to the compressor suction port 1B. With the Hydraulic valve in UP position, the inlet cold water flows from W1 TO W3 and the hot water flows from W4 to W2.

[0057] Referring to the Fig.7, of the present invention, the room cooling mode is achieved by flowing the refrigerant in a specific path. The hot high pressure refrigerant from the compressor discharge 1A flows to Solenoid Valve 6 through the port 6A. The solenoid valve 6 is in OFF position; hence ports 6A and 6D are connected and ports 6B and 6C are connected. From 6A, the hot refrigerant flows to port 6D and to Outdoor Heat Exchanger 2 where it loses its heat and becomes high pressure warm liquid. The warm liquid refrigerant flows to Expansion Valve 3 and becomes low pressure cold refrigerant. The refrigerant now flows to port 8A of Solenoid valve 8 which is in ON position (ports 8A and 8C are connected; ports 8B and 8D are connected). From 8A, it flows to 8C and then to the Indoor Heat Exchanger 4. Here the refrigerant absorbs heat from air to become low pressure gas (thus resulting in room cooling). The low pressure gaseous refrigerant flows to port 7D of Solenoid valve 7 which is in OFF position (ports 7A and 7D are connected; ports 7B and 7C are connected). From 7D, the refrigerant flows to port 7A and to the port 6C of Solenoid Valve 6. From 6C, the refrigerant flows to port 6B and to the compressor suction 1B.

[0058] Referring to the Fig.8, of the present invention, the water cooling mode is achieved by flowing the refrigerant in a specific path. The hot high pressure refrigerant from the compressor discharge 1A flows to Solenoid Valve 6 through the port 6A. The solenoid valve 6 is in OFF position; hence ports 6A and 6D are connected and ports 6B and 6C are connected. From 6A, the hot refrigerant flows to port 6D and to Outdoor Heat Exchanger 2 where it loses its heat and becomes high pressure warm liquid. The warm liquid refrigerant flows to Expansion Valve 3 and becomes low pressure cold refrigerant. The refrigerant now flows to port 8A of Solenoid valve 8 which is in OFF position (ports 8A and 8D are connected; ports 8C and 8B are connected). From 8A, it flows to 8D and then to the Water Tank Heat Exchanger 5’. Here the refrigerant absorbs heat from hot water to become low pressure gas (thus resulting in water cooling). The low pressure gaseous refrigerant flows to port 7C of Solenoid valve 7 which is in ON position (ports 7C and 7A are connected; ports 7B and 7D are connected). From 7C, the refrigerant flows to port 7A and to the port 6C of Solenoid Valve 6. From 6C, the refrigerant flows to port 6B and to the compressor suction 1B. With the Hydraulic valve in DOWN position, the inlet hot water flows from W1 TO W4 and the desired cold water flows from W3 to W2.
[0059] In an embodiment of the present invention, it is tobe understood that the spirit of the invention provides a combined effect of heating room and water or cooling effect of room and water. The combined effect is produced when valves position will allow for the valves 7 and 8 in the same position i.e. both 7 and 8 in OFF position or both 7 and 8 in ON position. For these valve positions, the Indoor Heat Exchanger and Water Tank Heat Exchanger 5’ gets connected in series. Hence, the refrigerant will follow in both the heat exchangers. This shall result in combined heating effect or combined cooling effect of Room and Water. This is possible because ports 7B and 8B are connected to each other. The refrigerant flow path in such combined state shall in accordance to the table below:

[0060] It will be understood by those within the art that, in general, terms used herein, and especially in the appended claims (e.g., bodies of the appended claims) are generally intended as “open” terms (e.g., the term “including” should be interpreted as “including but not limited to,” the term “having” should be interpreted as “having at least,” the term “includes” should be interpreted as “includes but is not limited to,” etc.). It will be further understood by those within the art that if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited in the claim, and in the absence of such recitation no such intent is present. For example, as an aid to understanding, the following appended claims may contain usage of the introductory phrases “at least one” and “one or more” to introduce claim recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles “a” or “an” limits any particular claim containing such introduced claim recitation to inventions containing only one such recitation, even when the same claim includes the introductory phrases “one or more” or “at least one” and indefinite articles such as “a” or “an” (e.g., “a” and/or “an” should typically be interpreted to mean “at least one” or “one or more”); the same holds true for the use of definite articles used to introduce claim recitations. In addition, even if a specific number of an introduced claim recitation is explicitly recited, those skilled in the art will recognize that such recitation should typically be interpreted to mean at least the recited number (e.g., the bare recitation of “two recitations,” without other modifiers, typically means at least two recitations, or two or more recitations). Furthermore, in those instances where a convention analogous to “at least one of A, B, and C, etc.” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B, and C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). In those instances where a convention analogous to “at least one of A, B, or C, etc.” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B, or C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). It will be further understood by those within the art that virtually any disjunctive word and/or phrase presenting two or more alternative terms, whether in the description, claims, or drawings, should be understood to contemplate the possibilities of including one of the terms, either of the terms, or both terms. For example, the phrase “A or B” will be understood to include the possibilities of “A” or “B” or “A and B.”

[0061] It will be further appreciated that functions or structures of a plurality of components or steps may be combined into a single component or step, or the functions or structures of one-step or component may be split among plural steps or components. The present invention contemplates all of these combinations. Unless stated otherwise, dimensions and geometries of the various structures depicted herein are not intended to be restrictive of the invention, and other dimensions or geometries are possible. In addition, while a feature of the present invention may have been described in the context of only one of the illustrated embodiments, such feature may be combined with one or more other features of other embodiments, for any given application. It will also be appreciated from the above that the fabrication of the unique structures herein and the operation thereof also constitute methods in accordance with the present invention. The present invention also encompasses intermediate and end products resulting from the practice of the methods herein. The use of “comprising” or “including” also contemplates embodiments that “consist essentially of” or “consist of” the recited feature.

We claim:

1.A device comprising:
a compressor compressing a refrigerant to produce a refrigerant with high temperature and high pressure;
a first four-way valve coupled to the compressor wherein the first four-way valve is configured to control the flow of the refrigerant flowing out or in to the compressor;
a second four-way valve coupled with the first four-way valve in series wherein the second four-way valve is configured to directing the refrigerant flowing;
an indoor heat exchanger coupled with the second four-way valve wherein the indoor heat exchanger is configured to exchange heat from the refrigerant flowing;
a third four-way valve coupled with the indoor heat exchanger wherein the third four-way valve is configured to directing the refrigerant flowing;
an expansion valve coupled with the third four-way valve wherein the expansion valve is configured to regulating pressure on the refrigerant flowing;
an outdoor heat exchanger coupled with the first four-way valve and the expansion device wherein the outdoor heat exchanger is configured to exchange heat from the refrigerant flowing;
a water tank coupled with second and third four-way valve wherein the water tank is configured to exchange heat from the refrigerant flowing.

2. The device as claimed in claim 1 wherein, the compressor discharges the refrigerant with high temperature and high pressure in gaseous state to the first four-way valve though a port 6A.
3. The device as claimed in claim 2 wherein, the first four-way valve is in ON position, thus connecting the port 6A with a port 6C and a port 6B with a port 6D.
4. The device as claimed in claim 3 wherein, the first four-way valve transfer the refrigerant with high temperature and high pressure in gaseous state through a port 6C to the second four-way valve through a port 7A.
5. The device as claimed in claim 4 wherein, the second four-way valve is OFF position thus connecting the port 7A with a port 7D and a port 7B with a port 7C.
6. The device as claimed in claim 1 and 5 wherein, the second four-way valve transfers the refrigerant through the port 7D into the indoor heat exchanger.
7. The device as claimed in claim 1 and 6 wherein, the refrigerant loses heat in the indoor heat exchanger resulting into room heating and converting the refrigerant into warm liquid state.
8. The device as claimed in claim 1 and 7, wherein the indoor heat exchanger transfers the refrigerant to the third four-way valve through a port 8C.
9. The device as claimed in claim 8, wherein the third four-way valve is in ON position, thus connecting a port 8A with the port 8C and a port 8B with a port 8D.
10. The device as claimed in claim 9, wherein the third four-way valve transfers the refrigerant through the port 8A into the expansion device.
11. The device as claimed in claim 1 and 10, wherein the expansion device regulating the pressure of the refrigerant to convert the state of refrigerant into cold temperature low pressure state.
12. The device as claimed in Claim 1 and 11, wherein the expansion device transfers the refrigerant in cold low pressure state into the outdoor heat exchanger.
13. The device as claimed in Claim 1 and 12, wherein the refrigerant absorbs heat in the outdoor heat exchanger from the outside air converting the refrigerant into low pressure gaseous state.
14. The device as claimed in Claim 1 and 13, wherein the outdoor heat exchanger transfers the refrigerant to the first four-way valve though port 6D.
15. The device as claimed in claim 1 and 14 wherein, the first four-way valve port transfers the refrigerant in low pressure gaseous state though port 6D into the compressor through a compressor suction port 1B.
16. The device as claimed in claim 4 wherein, the second four-way valve is in ON position thus connecting the port 7A with the port 7C and the port 7B with the port 7D.
17. The device as claimed in Claim 1 and 16 wherein, the second four-way valve transfers the refrigerant through the port 7C into the water tank.
18. The device as claimed in Claim 1 and 17 wherein, the refrigerant loses heat in the water tank resulting into water heating and converting the refrigerant into warm liquid state.
19. The device as claimed in Claim 1 and 18 wherein, the water tank transfers the refrigerant to the third four-way valve through a port 8D.
20. The device as claimed in Claim 19 wherein, the third four-way valve is in OFF position, thus connecting the port 8A with the port 8D and the port 8B with the port 8C.
21. The device as claimed in Claim 20 wherein, the third four-way valve transfers the refrigerant through the port 8A into the expansion valve.
22. The device as claimed in Claim 1 and 21 wherein, the expansion device transfers the refrigerant in cold low pressure state into the outdoor heat exchanger.
23. The device as claimed in Claim 1 and 22 wherein, the refrigerant absorbs heat in the outdoor heat exchanger from the outside air converting the refrigerant into low pressure gaseous state.
24. The device as claimed in Claim 1 and 23 wherein, the outdoor heat exchanger transfers the refrigerant to the first four-way valve though the port 6D.
25. The device as claimed in Claim 1 and 24 wherein, the first four-way valve port transfers the refrigerant in low pressure gaseous state though port 6B into the compressor through a compressor suction port 1B.
26. The device as claimed in claim 1 comprises of a hydraulic valve coupled to the water tank configured to control the flow of water.
27. The device as claimed in claim 26, wherein the hydraulic valve is in UP position thus, the inlet cold water flows from W1 to W3 and the hot water flows from W4 to W2.
28. The device as claimed in Claim 2 wherein, the first four-way valve is in OFF position, thus connecting the port 6A with the port 6D and the port 6B with the port 6C.
29. The device as claimed in Claim 28 wherein, the first four-way valve transfer the refrigerant through a port 6D into the outdoor heat exchanger.
30. The device as claimed in Claim 1 and 29 wherein, the refrigerant loses heat in the outdoor heat exchanger converting the refrigerant into high pressure warm liquid state.
31. The device as claimed in Claim 1 and 30 wherein, outdoor heat exchanger transfers the refrigerant to the expansion device.
32. The device as claimed in 1 and Claim 31 wherein, the expansion device regulating the pressure of the refrigerant to convert the state of refrigerant into cold temperature and low pressure state.
33. The device as claimed in Claim 1 and 32 wherein, the expansion device transfers the refrigerant to the third four-way valve through a port 8A.
34. The device as claimed in Claim 33, wherein the third four-way valve is in ON position, thus connecting the port 8A with the port 8C and a port 8B with a port 8D.
35. The device as claimed in Claim 34, wherein the third four-way valve transfers the refrigerant through the port 8C into the indoor heat exchanger.
36. The device as claimed in Claim 1 and 35 wherein, the refrigerant absorbs heat from the air in the indoor heat exchanger resulting into room cooling and converting the refrigerant into low pressure gas state.
37. The device as claimed in Claim 36 wherein, the indoor heat exchanger transfers the refrigerant to the second four-way valve through port 7D.
38. The device as claimed in Claim 37 wherein, the second four-way valve is in OFF position thus connecting the port 7A with the port 7D and the port 7B with the port 7C.
39. The device as claimed in Claim 1 and 38 wherein, second four-way valve transfers the refrigerant through the port 7A into the first four-way valve through port 6C.
40. The device as claimed in Claim 1 and 39 wherein, the first four-way valve port transfers the refrigerant in low pressure gaseous state though port 6B into the compressor through the compressor suction port 1B.
41. The device as claimed in Claim 1 and 32, wherein the third four-way valve is in OFF position, thus connecting the port 8A with the port 8D and the port 8B with the port 8C.
42. The device as claimed in Claim 41 wherein, the third four-way valve transfers the refrigerant through the port 8D to the water tank.
43. The device as claimed in Claim 1 and 42 wherein, the refrigerant absorbs heat from the water tank resulting into water cooling in the water tank and converting the refrigerant into low pressure gas.
44. The device as claimed in Claim 1 and 42 wherein, the water tank transfers the refrigerant to the second four-way valve through port 7C.
45. The device as claimed in Claim 44 herein, the second four-way valve is in ON position thus connecting the port 7A with the port 7C and the port 7B with the port 7D.
46. The device as claimed in Claim 1 and 45 wherein, second four-way valve transfers the refrigerant through the port 7A into the first four-way valve through port 6C.
47. The device as claimed in Claim 1 and 46 wherein, the first four-way valve port transfers the refrigerant in low pressure gaseous state though port 6B into the compressor through the compressor suction port 1B.
48. The device as claimed in claim 47, wherein the hydraulic valve is in DOWN position thus, the inlet hot water flows from W1 to W4 and the cold water flows from W3 to W2.
49. The device as claimed in claim 1, wherein the configuration of components produce effect of room heating followed by water heating wherein the first four-way valve is in ON position, the second and third four-way valve is in OFF position, by controlling the refrigerant flow as: from port 1A of the compressor to port 6A of the first four-way valve, exits through the port 6C of the first four-way valve, enter 7A of the second four-way valve, exits through the 7D of the second four-way valve, enter the indoor heat exchanger, and exit to enter the port 8C of the third four-way valve, exits through the port 8B of the third four-way valve, enter port 7B of the second four-way valve, exit through the port 7C of the second four-way valve, enter in the water tank heat exchanger, exits the water tank heat exchanger and enter port 8D of the third four-way valve, exits through the port 8A of the third four-way valve, enters the expansion valve, exits the expansion valve to enter the outdoor heat exchanger, enter port 6D of first four-way valve, exits though port 6B of first four-way valve to enter the compressor from port 1B.
50. The device as claimed in claim 49, wherein the hydraulic valve is in UP position and the water flow in inlet is through port W1 to W3 and the outlet is through port W4 to W2.
51. The device as claimed in claim 1, wherein the configuration of components produce effect of water heating followed by room heating wherein the first, second and third four-way valve is in ON position, by controlling the refrigerant flow as: from port 1A of the compressor to port 6A of the first four-way valve, exits through the port 6C of the first four-way valve, enter 7A of the second four-way valve, exits thorough the port 7C of the second four-way valve, enter in the water tank heat exchanger and exts, enters through port 8D of the third four-way valve, exits through port 8B of the third four-way valve, enters through port 7B of the second four-way valve, exits through the port 7D of the second four-way valve, enters and exits the indoor heat exchanger, enters through port 8C of the third four-way valve, exits through port 8A of the third four-way valve, enters and exits the expansion valve, enters and exits the outdoor heat exchanger, enters through port 6D of the first four-way valve, exits through port 6B of the first four-way valve and enter the compressor through port 1B.
52. The device as claimed in claim 51, wherein the hydraulic valve is in UP position and the water flow in inlet is through port W1 to W3 and the outlet is through port W4 to W2.
53. The device as claimed in claim 1, wherein the configuration of components produce effect of room cooling followed by water cooling wherein the first four-way valve is in OFF position, the second and third four-way valve is in ON position, by controlling the refrigerant flow as: from port 1A of the compressor to port 6A of the first four-way valve, exits through port 6D of the first four-way valve, enter and exit the outdoor heat exchanger, enter and exit the expansion valve, enter through port 8A of the third four-way valve, exit through the port 8C of the third four-way valve, enter and exit the indoor heat exchanger, enter through port 7D of the second four-way valve, exit through the 7B of the second four-way valve, enter through port 8B of the third four-way valve, exit through the port 8D of the third four-way valve, enter and exit the water tank heat exchanger, enter through port 7C of the second four-way valve, exit through port 7A of the second four-way valve, enter through port 6C of the first four-way valve, exit through the port 6B of the first four-way valve to enter the compressor through port 1B.
54. The device as claimed in claim 53, wherein the hydraulic valve is in DOWN position and the water flow in inlet is through port W1 to W4 and the outlet is through port W3 to W2.
55. The device as claimed in claim 1, wherein the configuration of components produce effect of water cooling followed by room cooling wherein the first, second and third four-way valve is in OFF position, by controlling the refrigerant flow as: from port 1A of the compressor to port 6A of the first four-way valve, exits through port 6D of the first four-way valve, enter and exit the outdoor heat exchanger, enter and exit the expansion valve, enter through port 8A of the third four-way valve, exit through the port 8D of the third four-way valve, enter and exit the water tank heat exchanger, enter through port 7C of the second four-way valve, exit through port 7B of the second four-way valve, enter through the port 8B of the third four-way valve, exit through the port 8C of the third four-way valve, enter and exit through the indoor heat exchanger, enter through port 7D of the second four-way valve, exit through the port 7A of the second four-way valve, enter through port 6C of the first four-way valve, exit through port 6B of the first four-way valve to enter in the compressor through port 1B.
56. The device as claimed in claim 55, wherein the hydraulic valve is in DOWN position and the water flow in inlet is through port W1 to W4 and the outlet is through port W3 to W2. , Description:FIELD OF INVENTION:
[001] The present subject matter described herein, a heating and cooling device, and more particularly to an improved form of air and water cooling and heating device with four-way solenoid valve control unit.

BACKGROUND AND PRIOR ART AND PROBLEM IN PRIOR ART:
[002] Background description includes information that may be useful in understanding the present invention. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed invention, or that any publication specifically or implicitly referenced is prior art.

[003] Summers & Winters, anywhere in the world require different devices to create required comfort for human being. During summers when the temperatures are high, the room ambient needs to be cooled down to arrive at a desired comfort level. Whereas, during winters when the temperatures are low, the same room ambient needs to be heated to create a comfortable ambience. Similarly, winter months require the water to be heated up for bath and other non-drinking applications and summer months require cooling of the same for handling it comfortably.

[004] It is desirable in coming times, that the lesser the devices in a living space the better it is. More number of devices creates maintenance issues and infrastructure issues. To achieve sustainable infrastructure, it is preferred that the devices with similar principle of working and which requires principally related mechanical and electrical components shall be merged in one unit. Thus offering user convenience in life and sustainability.

[005] Therefore, the present invention identifies a long felt need of the market and an address to an unresolved problem of combining a device to provide heating, cooling effect for air and water in one singular device. The combination of heating, cooling device for air and water is controlled by a four-way valve with principally similar components aiding the technology for both heating, cooling of air and water.

[006] The information disclosed in this background of the disclosure section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

[007] These and other objects and advantages of the present subject matter will be apparent to a person skilled in the art after consideration of the following detailed description taken into consideration with accompanying drawings in which preferred embodiments of the present subject matter are illustrated.

SUMMARY OF THE INVENTION:
[008] Solution to one or more drawbacks of existing device, and additional advantages are provided through the present device and method as disclosed in the present disclosure. Additional features and advantages are realized through the technicalities of the present disclosure. Other embodiments and aspects of the disclosure are described in detail herein and are considered to be a part of the claimed disclosure.

[009] The present disclosure relates to a device including a compressor, a first four-way valve, a second four-way valve, an indoor heat exchanger, a third four-way valve, an expansion valve, an outdoor heat exchanger, a water tank. The compressor is configured to compress a refrigerant to produce a refrigerant with high temperature and high pressure. The first four-way valve is coupled to the compressor and is configured to control the flow of the refrigerant flowing out or in to the compressor. The second four-way valve is coupled with the first four-way valve in series and is configured to directing the refrigerant flowing. The indoor heat exchanger is coupled with the second four-way valve and is configured to exchange heat from the refrigerant flowing. The third four-way valve is coupled with the indoor heat exchanger and is configured to directing the refrigerant flowing. The expansion valve is coupled with the third four-way valve and is configured to regulating pressure on the refrigerant flowing. The outdoor heat exchanger is coupled with the first four-way valve and the expansion device and is configured to exchange heat from the refrigerant flowing. The water tank is coupled with second and third four-way valve and is configured to exchange heat from the refrigerant flowing. The device as claimed in claim 1 wherein, the compressor discharges the refrigerant with high temperature and high pressure in gaseous state to the first four-way valve though a port 6A.

[0010] In an aspect of the invention, the first four-way valve is in ON position, thus connecting the port 6A with a port 6C and a port 6B with a port 6D. The first four-way valve transfer the refrigerant with high temperature and high pressure in gaseous state through a port 6C to the second four-way valve through a port 7A. The second four-way valve is OFF position thus connecting the port 7A with a port 7D and a port 7B with a port 7C. The second four-way valve transfers the refrigerant through the port 7D into the indoor heat exchanger.

[0011] In an aspect of the invention, the refrigerant loses heat in the indoor heat exchanger resulting into room heating and converting the refrigerant into warm liquid state. The indoor heat exchanger transfers the refrigerant to the third four-way valve through a port 8C.

[0012] In an aspect of the invention, the third four-way valve is in ON position, thus connecting a port 8A with the port 8C and a port 8B with a port 8D. The third four-way valve transfers the refrigerant through the port 8A into the expansion device.

[0013] In an aspect of the invention, the expansion device regulating the pressure of the refrigerant to convert the state of refrigerant into cold temperature low pressure state. The expansion device transfers the refrigerant in cold low pressure state into the outdoor heat exchanger.

[0014] In an aspect of the invention, the refrigerant absorbs heat in the outdoor heat exchanger from the outside air converting the refrigerant into low pressure gaseous state. The outdoor heat exchanger transfers the refrigerant to the first four-way valve though port 6D.

[0015] In an aspect of the invention, the first four-way valve port transfers the refrigerant in low pressure gaseous state though port 6D into the compressor through a compressor suction port 1B.

[0016] In another aspect of the invention, the second four-way valve is in ON position thus connecting the port 7A with the port 7C and the port 7B with the port 7D. The second four-way valve transfers the refrigerant through the port 7C into the water tank.

[0017] In an aspect of the invention, the refrigerant loses heat in the water tank resulting into water heating and converting the refrigerant into warm liquid state. The water tank transfers the refrigerant to the third four-way valve through a port 8D.

[0018] In an aspect of the invention, the third four-way valve is in OFF position, thus connecting the port 8A with the port 8D and the port 8B with the port 8C. The third four-way valve transfers the refrigerant through the port 8A into the expansion valve.

[0019] In an aspect of the invention, the expansion device transfers the refrigerant in cold low pressure state into the outdoor heat exchanger. The refrigerant absorbs heat in the outdoor heat exchanger from the outside air converting the refrigerant into low pressure gaseous state. In an aspect of the invention, the outdoor heat exchanger transfers the refrigerant to the first four-way valve though the port 6D.

[0020] In an aspect of the invention, the first four-way valve port transfers the refrigerant in low pressure gaseous state though port 6B into the compressor through a compressor suction port 1B.

[0021] In an aspect of the invention, a hydraulic valve coupled to the water tank configured to control the flow of water. The hydraulic valve is in UP position thus, the inlet cold water flows from W1 to W3 and the hot water flows from W4 to W2.

[0022] In another aspect of the invention, the first four-way valve is in OFF position, thus connecting the port 6A with the port 6D and the port 6B with the port 6C. The first four-way valve transfer the refrigerant through a port 6D into the outdoor heat exchanger. The refrigerant loses heat in the outdoor heat exchanger converting the refrigerant into high pressure warm liquid state.

[0023] In an aspect of the invention, the outdoor heat exchanger transfers the refrigerant to the expansion device. The expansion device regulating the pressure of the refrigerant to convert the state of refrigerant into cold temperature and low pressure state. The expansion device transfers the refrigerant to the third four-way valve through a port 8A.

[0024] In another aspect of the invention, the third four-way valve is in ON position, thus connecting the port 8A with the port 8C and a port 8B with a port 8D. The third four-way valve transfers the refrigerant through the port 8C into the indoor heat exchanger.

[0025] In an aspect of the invention, the refrigerant absorbs heat from the air in the indoor heat exchanger resulting into room cooling and converting the refrigerant into low pressure gas state. The indoor heat exchanger transfers the refrigerant to the second four-way valve through port 7D.

[0026] In yet another aspect of the invention, the second four-way valve is in OFF position thus connecting the port 7A with the port 7D and the port 7B with the port 7C. The second four-way valve transfers the refrigerant through the port 7A into the first four-way valve through port 6C. The first four-way valve port transfers the refrigerant in low pressure gaseous state though port 6B into the compressor through the compressor suction port 1B.

[0027] In another aspect of the invention, the third four-way valve is in OFF position, thus connecting the port 8A with the port 8D and the port 8B with the port 8C. The third four-way valve transfers the refrigerant through the port 8D to the water tank.

[0028] In an aspect of the invention, the refrigerant absorbs heat from the water tank resulting into water cooling water cooling in the water tank and converting the refrigerant into low pressure gas. The water tank transfers the refrigerant to the second four-way valve through port 7C.

[0029] In an aspect of the invention, the second four-way valve is in ON position thus connecting the port 7A with the port 7C and the port 7B with the port 7D. The second four-way valve transfers the refrigerant through the port 7A into the first four-way valve through port 6C. The first four-way valve port transfers the refrigerant in low pressure gaseous state though port 6B into the compressor through the compressor suction port 1B.

[0030] In an aspect of the invention, the hydraulic valve is in DOWN position thus, the inlet hot water flows from W1 to W4 and the cold water flows from W3 to W2.
[0031] The foregoing summary is illustrative only and is not intended to be in any way limiting. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features will become apparent by reference to the drawings and the following detailed description.

BRIEF DESCRIPTION OF THE DRAWINGS
[0032] It is to be noted, however, that the appended drawings illustrate only typical embodiments of the present subject matter and are therefore not to be considered for limiting of its scope, for the invention may admit to other equally effective embodiments. The detailed description is described with reference to the accompanying figures. In the figures, a reference number identifies the figure in which the reference number first appears. The same numbers are used throughout the figures to reference like features and components. Some embodiments of system or methods or structure in accordance with embodiments of the present subject matter are now described, by way of example, and with reference to the accompanying figures, in which:

[0033] Fig. 1 is a schematic representation of the components of the present invention.

[0034] Fig. 2 is layout of the flow control circuit of the four-way valve.

[0035] Fig. 3 is illustration of (a) Off mode of the four-way valve (b) On-mode of the four-way valve.

[0036] Fig. 4 is an illustration of the water tank, heating element and the hydraulic valve of the present invention.

[0037] Fig. 5 is a layout view of the room heating mode of the present invention.

[0038] Fig. 6 is a layout view of the water heating mode of the present invention.
[0039] Fig. 7 is a layout view of the room cooling mode of the present invention.

[0040] Fig. 8 is a layout view of the water cooling mode of the present invention.

[0041] The figures depict embodiments of the present subject matter for the purposes of illustration only. A person skilled in the art will easily recognize from the following description that alternative embodiments of the structures and methods illustrated herein may be employed without departing from the principles of the disclosure described herein.

DESCRIPTION OF THE PREFERRED EMBODIMENTS:
[0042] While the embodiments of the disclosure are subject to various modifications and alternative forms, specific embodiment thereof have been shown by way of example in the figures and will be described below. It should be understood, however, that it is not intended to limit the disclosure to the particular forms disclosed, but on the contrary, the disclosure is to cover all modifications, equivalents, and alternative falling within the scope of the disclosure.

[0043] The terms “comprises”, “comprising”, or any other variations thereof used in the disclosure, are intended to cover a non-exclusive inclusion, such that a device, system, assembly that comprises a list of components does not include only those components but may include other components not expressly listed or inherent to such system, or assembly, or device. In other words, one or more elements in a system or device proceeded by “comprises… a” does not, without more constraints, preclude the existence of other elements or additional elements in the system or device.

[0044] Referring to figure 1 to 8 of the present invention, describes a device for heating, cooling of air and water.

[0045] In an embodiment of the present invention, referring to Fig.1 to 8, the components are identified as follows:

1 COMPRESSOR
1A COMPRESSOR DISCHARGE
1B COMPRESSOR SUCTION
2 OUTDOOR HEAT EXCHANGER
3 EXPANSION VALVE
4 INDOOR HEAT EXCHANGER
5 WATER TANK
5’ WATER TANK HEAT EXCHANGER
6 FIRST FOUR-WAY VALVE
6A,6B,6C,6D FOUR PORTS OF FIRST FOUR-WAY VALVE
7 SECOND FOUR-WAY VALVE
7A,7B,7C,7D FOUR PORTS OF SECOND FOUR-WAY VALVE
8 THIRD FOUR-WAY VALVE
8A,8B,8C,8D FOUR PORTS OF THIRD FOUR-WAY VALVE
9 HYDRAULIC VALVE
W1 WATER INLET PIPE FROM OVERHEAD TANK
W2 WATER OUTLET PIPE FOR USAGE
W3 WATER TANK COLD WATER PIPE
W4 WATER TANK HOT WATER PIPE

[0046] The present invention provides a device for heating, cooling of air and water simultaneously or in independent modes as an aspect of the invention. The four independent modes of the present device are:
a) Room Cooling
b) Water Cooling
c) Room heating
d) Water heating
[0047] The present invention achieves the four different modes using a four-way valve or a solenoid valve combination. Referring to Fig.2 three (3) four-way valve are coupled to form a control circuit of managing the flow of refrigerant throughout the device and deliver heating, cooling effect in air and water.

[0048] It is to be understood that the major principle components of the present device as follows:
a) Compressor: The main role of compressor is to compress the low pressure and low temperature gaseous refrigerant from evaporator to a high pressure and high temperature gaseous refrigerant. This takes the gas to a temperature higher than the surrounding temperature to condenser, where heat is to be rejected to make the refrigerant ready to absorb the heat and evaporate again.
b) Heat Exchanger(s): Primarily heat exchange is taking place in two parts in a typical refrigeration system i.e. evaporator and condenser. Heat exchange in evaporator is through the low pressure and low temperature liquid refrigerant (or liquid-vapor mixture) absorbing heat from a heat source (outdoor ambience) or the area/object that needs to be cooled. This absorption of heat evaporates the refrigerant to gaseous state leading to significant increase in quantum of heat exchange. Heat exchange in Condenser is through the high pressure and high temperature refrigerant from the compressor loosing heat to surrounding. The heat is lost to heat sink (outdoor atmosphere) or the area/ object which to be heated (room/water). This results in condensation of the gaseous refrigerant to liquid state.
c) Throttling Device/Expansion Device: The throttling device (or expansion device) is used for reducing the pressure (and hence the temperature) of the high pressure refrigerant from the condenser. This is achieved by restricting the refrigerant flow through a small opening. This low temperature refrigerant now becomes capable of absorbing heat from area / object to be cooled.
d) Three Pilot Operated Four-Way Solenoid Valves: The pilot operated four-way solenoid valves are simply 4/2 valves (4 way/2 positions) with 4 ports and two states. Referring to Fig.3 four ports are A, B, C and D. There is bush 34, inside the valve that has two states. In one state, the bush closes ports B and C. This leaves the ports A and D connected. In the other state, the bush closes ports B and D which leaves the ports A and C connected. This switching of position of the bush is achieved by creating pressure difference between both ends of the part, which helps to push the bush to the desired state. 31 represents the pilot connection, 32 represents the pilot valve, 33 represents the solenoid, 34 represents the bush.

[0049] In the present invention, the principle working of the device is corroborated using the following understanding:

a) Water heating mode: Referring to Fig.6, in this mode, the high pressure hot gaseous refrigerant from the compressor discharge is directed to the water tank, where the refrigerant undergoes phase change to liquid by releasing its latent heat to the cold water. This heat is taken by the water as sensible heat, due to the temperature difference between water and refrigerant, resulting in increase in its temperature. This results in water heating.
b) Room heating mode: Referring to Fig.5, in this mode, the high pressure hot gaseous refrigerant from the compressor discharge is directed to the indoor evaporator, where the refrigerant releases its heat to the cold indoor air, due to temperature difference, thereby undergoing phase change to liquid. This heat is taken by the air as sensible heat resulting in hot air discharge. This results in room heating.
c) Water cooling mode: Referring to Fig.8, in this mode, the low pressure cold liquid refrigerant from the expansion device is directed to the water tank. Due to the temperature difference, heat flows from the hot water to the cold refrigerant thereby cooling the water down and changing the phase of the refrigerant to vapour. This results in water cooling.
d) Room cooling mode: Referring to Fig.7, in this mode, the low pressure cold liquid refrigerant from the expansion device (capillary tube) is directed to the indoor evaporator. Due to the temperature difference, heat flows from the hot indoor air to the cold refrigerant thereby cooling the air down and changing the phase of the refrigerant to vapour. This results in room cooling.

[0050] In the present invention, the different modes are operated together or individually by controlling the flow of refrigerant. A control circuit of the present invention device is developed with an integrated water tank, as shown in figure 4 and new flow control circuit as shown in figure 2. Referring to Fig.2, the flow control circuit consists of first, second and third pilot operated four-way valves used as solenoid valves. These valves have two positions for ON and OFF condition of the solenoid valve as shown in figure 3. First Four-way valve (6) is responsible for changing the mode between heating and cooling. Second (7) and third (8) four-way valve are used to direct the refrigerant to either room or water tank as per requirement. In order to achieve refrigerant flow to achieve the four basic outputs, the three four-way valves are set ON and OFF in a specific manner. The refrigerant flow and the valve positions in the four different modes of operation are explained in figure 5-8.

[0051] Referring to figure 1, the circuit has been made in such a way that, when all the three valves are in off position, both the evaporator and the water tank coil get connected in series. This is important during the initial nitrogen flushing, vacuuming and refrigerant charging for covering the complete system. Otherwise, either the evaporator or the coil would form a closed loop and get isolated, resulting in improper flushing.

[0052] The pilot operated four-way valves work on differential pressures. A pilot valve mounted on the four-way valve takes differential pressure from ports A (high pressure) and B (low pressure) of the reversing valve itself. Since second four-way valve (7) and third four-way valve (8) do not have different pressures at ports A and B which is needed for its operation, the differential pressure is taken from different points. The pilot connections from the ports A and B of the second four-way valve and third four-way valve are connected to points a and b respectively as shown in figure 1.

[0053] Referring to Fig.4, further in the device of the present invention, a novel water tank (5) is designed with the refrigeration coil extending from top to the bottom of the tank. Also a 4/2 direction control hydraulic valve is attached with the tank to direct the cold and hot water accordingly. During summer, the inlet water from the overhead tank is hot. With the 4/2 valve at its initial position, the hot water is directed to the top of the tank. As shown in figure 4a, the cold refrigerant directly flows to the top of the tank and then flows down so as to have maximum cooling at the top of the tank. This ensures convective cooling of the complete water in the tank. The resulting cold water is drawn from the bottom of the tank.

[0054] During winter, there is cold water inlet to the tank. The valve is now moved to the second position such that this cold water gets directed to the bottom of the tank and hot water from the top of the tank could be drawn out. As shown in figure 4b, the hot refrigerant flows from the bottom to the top so as to have maximum heating at the bottom of the tank. This ensures convective heating of the complete water in the tank. This hence facilitates the use of a single tank and single coil for achieving both heating and cooling of water.

[0055] Referring to the Fig.5, of the present invention, the room heating mode is achieved by flowing the refrigerant in a specific path. The hot high pressure refrigerant from the compressor discharge 1A flows to Solenoid Valve 6 through the port 6A. The solenoid valve 6 is in ON position; hence ports 6A and 6C are connected and ports 6B and 6D are connected. From 6A, the hot refrigerant flows to port 6C and to Solenoid Valve 7 through port 7A. Solenoid valve 7 is in OFF position (7A and 7D are connected; 7B and 7C are connected). The refrigerant flows to port 7D and to the Indoor Heat Exchanger 4. It loses its heat in the HE 4 (thus achieving room heating). From Indoor Heat Exchanger 4, the warm liquid refrigerant now flows to port 8C of Solenoid valve 8 which is in ON position (8A and 8C are connected; 8B and 8D are connected). From 8C it flows to port 8A from which it flows to the Expansion Valve 3. From Expansion valve 3, cold low pressure refrigerant flows to Outdoor Heat Exchanger 2 where it absorbs heat from outside air and becomes low pressure gas. The low pressure gaseous refrigerant from Outdoor Heat Exchanger 2 flows to port 6D of Solenoid valve 6. From 6D, it flows to port 6B from which it flows to the compressor suction port 1B.

[0056] Referring to the Fig.6, of the present invention, the water heating mode is achieved by flowing the refrigerant in a specific path. The hot high pressure refrigerant from the compressor discharge 1A flows to Solenoid Valve 6 through the port 6A. The solenoid valve 6 is in ON position; hence ports 6A and 6C are connected and ports 6B and 6D are connected. From 6A, the hot refrigerant flows to port 6C and to Solenoid Valve 7 through port 7A. Solenoid valve 7 is in ON position (7A and 7C are connected; 7B and 7D are connected). The refrigerant flows to port 7C and to Water Tank Heat Exchanger 5’. It loses its heat in the HE 5’ (thus achieving water heating). From Water Tank Heat Exchanger 5’, the warm liquid refrigerant now flows to port 8D of Solenoid valve 8 which is in OFF position (8A and 8D are connected; 8B and 8C are connected). From 8D it flows to port 8A from which it flows to the Expansion Valve 3. From Expansion valve 3, cold low pressure refrigerant flows to Outdoor Heat Exchanger 2 where it absorbs heat from outside air and becomes low pressure gas. The low pressure gaseous refrigerant from Outdoor Heat Exchanger 2 flows to port 6D of Solenoid valve 6. From 6D, it flows to port 6B from which it flows to the compressor suction port 1B. With the Hydraulic valve in UP position, the inlet cold water flows from W1 TO W3 and the hot water flows from W4 to W2.

[0057] Referring to the Fig.7, of the present invention, the room cooling mode is achieved by flowing the refrigerant in a specific path. The hot high pressure refrigerant from the compressor discharge 1A flows to Solenoid Valve 6 through the port 6A. The solenoid valve 6 is in OFF position; hence ports 6A and 6D are connected and ports 6B and 6C are connected. From 6A, the hot refrigerant flows to port 6D and to Outdoor Heat Exchanger 2 where it loses its heat and becomes high pressure warm liquid. The warm liquid refrigerant flows to Expansion Valve 3 and becomes low pressure cold refrigerant. The refrigerant now flows to port 8A of Solenoid valve 8 which is in ON position (ports 8A and 8C are connected; ports 8B and 8D are connected). From 8A, it flows to 8C and then to the Indoor Heat Exchanger 4. Here the refrigerant absorbs heat from air to become low pressure gas (thus resulting in room cooling). The low pressure gaseous refrigerant flows to port 7D of Solenoid valve 7 which is in OFF position (ports 7A and 7D are connected; ports 7B and 7C are connected). From 7D, the refrigerant flows to port 7A and to the port 6C of Solenoid Valve 6. From 6C, the refrigerant flows to port 6B and to the compressor suction 1B.

[0058] Referring to the Fig.8, of the present invention, the water cooling mode is achieved by flowing the refrigerant in a specific path. The hot high pressure refrigerant from the compressor discharge 1A flows to Solenoid Valve 6 through the port 6A. The solenoid valve 6 is in OFF position; hence ports 6A and 6D are connected and ports 6B and 6C are connected. From 6A, the hot refrigerant flows to port 6D and to Outdoor Heat Exchanger 2 where it loses its heat and becomes high pressure warm liquid. The warm liquid refrigerant flows to Expansion Valve 3 and becomes low pressure cold refrigerant. The refrigerant now flows to port 8A of Solenoid valve 8 which is in OFF position (ports 8A and 8D are connected; ports 8C and 8B are connected). From 8A, it flows to 8D and then to the Water Tank Heat Exchanger 5’. Here the refrigerant absorbs heat from hot water to become low pressure gas (thus resulting in water cooling). The low pressure gaseous refrigerant flows to port 7C of Solenoid valve 7 which is in ON position (ports 7C and 7A are connected; ports 7B and 7D are connected). From 7C, the refrigerant flows to port 7A and to the port 6C of Solenoid Valve 6. From 6C, the refrigerant flows to port 6B and to the compressor suction 1B. With the Hydraulic valve in DOWN position, the inlet hot water flows from W1 TO W4 and the desired cold water flows from W3 to W2.
[0059] In an embodiment of the present invention, it is tobe understood that the spirit of the invention provides a combined effect of heating room and water or cooling effect of room and water. The combined effect is produced when valves position will allow for the valves 7 and 8 in the same position i.e. both 7 and 8 in OFF position or both 7 and 8 in ON position. For these valve positions, the Indoor Heat Exchanger and Water Tank Heat Exchanger 5’ gets connected in series. Hence, the refrigerant will follow in both the heat exchangers. This shall result in combined heating effect or combined cooling effect of Room and Water. This is possible because ports 7B and 8B are connected to each other. The refrigerant flow path in such combined state shall in accordance to the table below:

[0060] It will be understood by those within the art that, in general, terms used herein, and especially in the appended claims (e.g., bodies of the appended claims) are generally intended as “open” terms (e.g., the term “including” should be interpreted as “including but not limited to,” the term “having” should be interpreted as “having at least,” the term “includes” should be interpreted as “includes but is not limited to,” etc.). It will be further understood by those within the art that if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited in the claim, and in the absence of such recitation no such intent is present. For example, as an aid to understanding, the following appended claims may contain usage of the introductory phrases “at least one” and “one or more” to introduce claim recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles “a” or “an” limits any particular claim containing such introduced claim recitation to inventions containing only one such recitation, even when the same claim includes the introductory phrases “one or more” or “at least one” and indefinite articles such as “a” or “an” (e.g., “a” and/or “an” should typically be interpreted to mean “at least one” or “one or more”); the same holds true for the use of definite articles used to introduce claim recitations. In addition, even if a specific number of an introduced claim recitation is explicitly recited, those skilled in the art will recognize that such recitation should typically be interpreted to mean at least the recited number (e.g., the bare recitation of “two recitations,” without other modifiers, typically means at least two recitations, or two or more recitations). Furthermore, in those instances where a convention analogous to “at least one of A, B, and C, etc.” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B, and C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). In those instances where a convention analogous to “at least one of A, B, or C, etc.” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B, or C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). It will be further understood by those within the art that virtually any disjunctive word and/or phrase presenting two or more alternative terms, whether in the description, claims, or drawings, should be understood to contemplate the possibilities of including one of the terms, either of the terms, or both terms. For example, the phrase “A or B” will be understood to include the possibilities of “A” or “B” or “A and B.”

[0061] It will be further appreciated that functions or structures of a plurality of components or steps may be combined into a single component or step, or the functions or structures of one-step or component may be split among plural steps or components. The present invention contemplates all of these combinations. Unless stated otherwise, dimensions and geometries of the various structures depicted herein are not intended to be restrictive of the invention, and other dimensions or geometries are possible. In addition, while a feature of the present invention may have been described in the context of only one of the illustrated embodiments, such feature may be combined with one or more other features of other embodiments, for any given application. It will also be appreciated from the above that the fabrication of the unique structures herein and the operation thereof also constitute methods in accordance with the present invention. The present invention also encompasses intermediate and end products resulting from the practice of the methods herein. The use of “comprising” or “including” also contemplates embodiments that “consist essentially of” or “consist of” the recited feature.