Integrated refrigeration, heating and hot water supply system

Abstract

The present application relates to an integrated refrigeration, heating and hot water supply system. The integrated refrigeration, heating and hot water supply system comprises a main unit, a terminal apparatus and a third heat exchanger, wherein the third heat exchanger is arranged in the main unit or outside the main unit; the main unit comprises a compressor, a first three-way valve, a four-way valve, a first heat exchanger, a second heat exchanger and a domestic water tank; the terminal apparatus comprises an indoor fan coil unit and a floor-heating water distribution and collection device; the compressor, the first heat exchanger and the indoor fan coil unit form a refrigeration loop; the compressor, the second heat exchanger, the domestic water tank and the first heat exchanger form a hot-water production loop; and the compressor, the third heat exchanger, the floor-heating water distribution and collection device and the first heat exchanger form a floor heating loop. The integrated refrigeration, heating and hot water supply system can be used to realize refrigeration, heating and hot water supply, and thus heat loss is reduced, the environmental protection performance is improved and a user's usage requirements are met.

Description

Heating and cooling system Technical Field

[0001] The present application relates to the field of electrical appliances, and in particular to an integrated cooling and heating system. Background Art

[0002] The HVAC equipment in related technologies usually has cooling and heating functions, but in our daily lives, in addition to cooling and heating, we also need a large amount of domestic hot water. Therefore, a water heater needs to be installed to produce hot water. The heat generated by the HVAC equipment during cooling needs to be discharged, which is not only environmentally friendly but also costly. Summary of the Invention

[0003] The purpose of this application is to provide an integrated cooling and heating system.

[0004] The technical solution adopted by the present application to solve the technical problem is: constructing a cooling and heating integrated system, including a host, a terminal device and a third heat exchanger, wherein the third heat exchanger is arranged inside the host or outside the host;

[0005] The host comprises:

[0006] A compressor, including an input port and an output port;

[0007] a first three-way valve and a four-way valve;

[0008] a first heat exchanger connected to the output port via the first three-way valve and the four-way valve;

[0009] a second heat exchanger comprising a first refrigerant port, a second refrigerant port, a first water port, and a second water port, wherein the first refrigerant port is connected to the output port via the first three-way valve, and the second refrigerant port is connected to the first heat exchanger;

[0010] a domestic water tank connected to the first water port and the second water port;

[0011] The third heat exchanger includes a third refrigerant port, a fourth refrigerant port, a third water port, and a fourth water port, the third refrigerant port being connected to the output port through the first three-way valve and the four-way valve, and the fourth refrigerant port being connected to the first heat exchanger;

[0012] The terminal device includes:

[0013] an indoor fan coil unit, connected to the first heat exchanger and the input port respectively;

[0014] a floor heating manifold connected to the third water port and the fourth water port;

[0015] Among them, the compressor, the first heat exchanger, and the indoor fan coil form a refrigeration circuit, the compressor, the second heat exchanger, the domestic water tank, and the first heat exchanger form a hot water circuit, and the compressor, the third heat exchanger, the floor heating manifold, and the first heat exchanger form a floor heating circuit.

[0016] In some embodiments, the first heat exchanger has a first inlet and a second inlet, and the first inlet and the second inlet are connected to each other; the first inlet and the second inlet are connected to the output port of the compressor, and the second inlet and the second inlet are respectively connected to the indoor fan coil unit and the second heat exchanger.

[0017] In some embodiments, the domestic water tank has a water inlet and a water outlet;

[0018] The water outlet is connected to the first water port;

[0019] The water inlet is connected to the second water port.

[0020] In some embodiments, the third refrigerant port is in communication with the four-way valve; and the fourth refrigerant port is in communication with the second inlet and outlet.

[0021] In some embodiments, further comprising a second three-way valve;

[0022] The second three-way valve is connected to the output port and the second refrigerant port.

[0023] In some embodiments, the input port of the compressor is connected to a gas-liquid separator.

[0024] In some embodiments, a buffer water tank is further included; the buffer water tank is connected to the fourth water port and the floor heating manifold.

[0025] In some embodiments, a first power pump is further included, and the first power pump is arranged between the domestic water tank and the first water port.

[0026] In some embodiments, a second power pump is further included, and the second power pump is arranged between the buffer water tank and the fourth water port.

[0027] In some embodiments, a one-way valve is further included. The one-way valve is arranged between the floor heating manifold and the buffer water tank and is configured to only allow water in the floor heating manifold to flow to the buffer water tank.

[0028] The implementation of the integrated cooling, heating and heat system of the present application has the following beneficial effects: the integrated cooling, heating and heat system forms a cooling circuit by forming a compressor, a first heat exchanger, and an indoor fan coil unit, forms a heating circuit by forming a second heat exchanger, a domestic water tank, and a first heat exchanger, and forms a floor heating circuit by forming a compressor, a third heat exchanger, a floor heating manifold, and a first heat exchanger, thereby realizing cooling and heating to supply hot water, reducing heat loss, improving environmental protection performance and meeting user needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present application will be further described below with reference to the accompanying drawings and embodiments, in which:

[0030] FIG1 is a schematic structural diagram of a cooling and heating integrated system according to a first embodiment of the present application;

[0031] FIG2 is a schematic structural diagram of a cooling and heating integrated system in a second embodiment of the present application. DETAILED DESCRIPTION

[0032] To provide a clearer understanding of the technical features, objectives, and effects of this application, a detailed description of the specific embodiments of this application is now provided with reference to the accompanying drawings. In the following description, it should be noted that, unless otherwise expressly specified or limited, terms such as "connected" and "disposed" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; internal connections between two elements, or interactions between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located above the other element, or one or more intervening elements may be present. The terms "first," "second," and "third," etc., are used solely to facilitate the description of this technical solution and should not be construed to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, features designated as "first," "second," or "third," etc., may explicitly or implicitly include one or more of such features. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0033] Figure 1 shows a first embodiment of the integrated cooling and heating system of the present invention. The integrated cooling and heating system can be used for cooling, heating, and providing hot water, and has the advantages of being environmentally friendly, low in manufacturing cost, and having a high user experience.

[0034] In this embodiment, the integrated cooling and heating system may include a main unit 100, a terminal device 200, and a third heat exchanger 31. The main unit 100 may include a compressor 11, a first heat exchanger 12, a four-way valve 13, a first three-way valve 14, a second three-way valve 15, a gas-liquid separator 16, a second heat exchanger 21, a domestic water tank 22, and a first power pump 23. The third heat exchanger 31 is disposed externally to the main unit 100 and may be connected to the terminal device 200. The terminal device 200 may include an indoor fan coil unit 17, a buffer water tank 32, a second power pump 33, a floor heating manifold 34, and a one-way valve 35.

[0035] In this embodiment, the compressor 11 is used to compress the refrigerant. In some embodiments, the compressor 11 has an input port 112 and an output port 111, wherein the input port 112 can receive the refrigerant to be compressed and the output port 111 can output the compressed refrigerant.

[0036] In this embodiment, the first heat exchanger 12 is used to exchange heat between the refrigerant and the outdoor air. In some embodiments, the first heat exchanger 12 can be a finned heat exchanger. In some embodiments, the first heat exchanger 12 has a first inlet and outlet 121 and a second inlet and outlet 122. The first inlet and outlet 121 can be connected to the second inlet and outlet 122. The first inlet and outlet 121 can be connected to the output port 111 of the compressor 11 via a pipeline. The second inlet and outlet 122 can be connected to the indoor fan coil 17 and the second heat exchanger 21 via a pipeline. The compressed refrigerant output by the compressor 11 can enter the first heat exchanger 12 through the first inlet and outlet 121 and, after heat exchange, can be output from the second inlet and outlet 122.

[0037] In this embodiment, the four-way valve 13 has four interfaces, wherein the first interface can be connected to the output port 111 of the compressor 11 by setting a pipeline, wherein the second interface can be connected to the first inlet and outlet 121 by setting a pipeline or directly, wherein the third interface can be connected to the input port 112 of the compressor 11 by setting a pipeline, and wherein the fourth interface can be connected to the indoor fan coil 17 by setting a pipeline.

[0038] In this embodiment, the first three-way valve 14 has three interfaces, wherein the first interface is connected to the input port 112 of the compressor 11 via a pipeline or directly, and the second interface is connected to the first interface of the four-way valve 13 via a pipeline, so that the first interface of the four-way valve 13 can be connected to the output port 111. That is, the first heat exchanger 12 can be connected to the output port 111 of the compressor 11 via the four-way valve 13 and the first three-way valve 14 in sequence. The refrigerant output from the output port 111 of the compressor 11 can enter the first heat exchanger 12 through the first three-way valve 14 and the four-way valve 13 in sequence. The third interface of the first three-way valve 14 can be connected to the second heat exchanger 21, so that the refrigerant output from the compressor 11 partially enters the second heat exchanger 21 through the first three-way valve 14 for heat exchange.

[0039] In this embodiment, the second three-way valve 15 is connected to the output port 111 and the second heat exchanger 21. Specifically, the second three-way valve 15 has three interfaces, the first interface of which is connected to the second heat exchanger 21 via a pipeline, and the second interface is connected to the second inlet and outlet 122 of the first heat exchanger 12 via a pipeline. A valve 18 is provided on the pipeline connecting this interface and the second inlet and outlet 122. The valve 18 ensures that the refrigerant output from the first heat exchanger 12 is only transported toward the second inlet and outlet 122. The third interface of the second three-way valve 15 can be connected to the output port 111 through the first three-way valve 14.

[0040] In this embodiment, the gas-liquid separator 16 is connected to the input port 112 of the compressor 11 and can be connected to an interface of the four-way valve 13. It can receive the gaseous and liquid mixed refrigerant and separate it. The separated gaseous refrigerant can be transported to the compressor 11.

[0041] In this embodiment, the second heat exchanger 21 can be used for heat exchange between water and refrigerant.

[0042] In some embodiments, the second heat exchanger 21 may include a first refrigerant port 211, a second refrigerant port 212, a first water port 213, and a second water port 214. The first refrigerant port 211 is connected to the second refrigerant port 212 for refrigerant flow. The first water port 213 is connected to the second water port 214 for water flow. The first refrigerant port 211 is connected to the output port 111 via the first three-way valve 14. The refrigerant output from the output port 111 can pass through the first three-way valve 14 and the first refrigerant port 211 into the second heat exchanger 21 for heat exchange with water. The refrigerant after heat exchange can be output through the second refrigerant port 212. The second refrigerant port 212 is connected to the first port of the second three-way valve 15 and is then connected to the first heat exchanger 12. The first water port 213 can be connected to the domestic water tank 22 for receiving water from the domestic water tank 22. The second water port 214 can be connected to the domestic water tank 22 for outputting water to the domestic water tank 22.

[0043] In this embodiment, the domestic water tank 22 can store and supply hot water. It may include a water inlet 222 and a water outlet 221. The water outlet 221 may be connected to the first water port 213 via a pipeline. Water output from the water outlet may enter the second heat exchanger 21 through the first water port 213. The water inlet 222 may be connected to the second water port 214 via a pipeline. Water heated in the second heat exchanger 21 may be input into the domestic water tank 22 through the second water port 214 and the water inlet 222. In some embodiments, the domestic water tank 22 may also be provided with a hot water supply port and a water inlet for connecting to an external water source. Hot water in the domestic water tank 22 may be output through the hot water supply port. The domestic water tank 22 may be refilled through the water inlet. In some embodiments, the domestic water tank 22 may include a cold water inlet 223 connected to an external water source and a hot water outlet 224 for supplying hot water. The cold water inlet 223 may be connected to tap water. The hot water outlet 224 may output hot water directly or be connected to a terminal device.

[0044] In this embodiment, the first power pump 23 is arranged between the domestic water tank 22 and the first water port 213. Specifically, the first power pump 23 is arranged on the pipeline between the water inlet 222 and the first water port 213, and is used to pump the cold water in the domestic water tank 22 to the second heat exchanger 21.

[0045] In some embodiments, the third heat exchanger 31 includes a third refrigerant port 311, a fourth refrigerant port 312, a third water port 313, and a fourth water port 314. The third refrigerant port 311 is connected to the fourth refrigerant port 312 for refrigerant flow. The third water port 313 and the fourth water port 314 are connected for water flow. The third refrigerant port 311 can be connected to the four-way valve 13 and then connected to the output port 111 through the four-way valve 13 and the first three-way valve 14. The refrigerant output from the compressor 11 can pass through the first three-way valve 14 and the four-way valve 13 in sequence and enter the third heat exchanger 31 from the third refrigerant port 311. The fourth refrigerant port 312 can be connected to the first heat exchanger 12, specifically, it can be connected to the second inlet and outlet 122 of the first heat exchanger 12. After heat exchange in the third heat exchanger 31, the refrigerant can pass through the first heat exchanger 12, the four-way valve 13, and the gas-liquid separator 16 before entering the compressor 11.

[0046] In this embodiment, the indoor fan coil unit 17 can be connected to the second inlet and outlet 122. The indoor fan coil unit 17 can be connected to the third port in the four-way valve 13 and the gas-liquid separator 16, and then to the input port 112. The refrigerant output from the second inlet and outlet 122 can enter the indoor fan coil unit 17, allowing the indoor fan coil unit 17 to cool the indoor air.

[0047] In this embodiment, the buffer water tank 32 may be connected to the fourth water port 314 , and the return water of the terminal floor heating may flow to the third heat exchanger 31 through the fourth water port 314 .

[0048] In this embodiment, the second power pump 33 is arranged between the buffer water tank 32 and the fourth water port 314, that is, located on the pipeline between the buffer water tank 32 and the fourth water port 314, for pumping water in the buffer water tank 32 to the third heat exchanger 31.

[0049] In this embodiment, the floor heating manifold 34 can be connected to the third water port 313 , and the floor heating manifold 34 can be connected to the fourth water port 314 by being connected to the buffer water tank 32 .

[0050] In this embodiment, the one-way valve 35 is arranged between the floor heating manifold 34 and the buffer water tank 32, and is located on the connecting pipe between the floor heating manifold 34 and the buffer water tank 32. It can be configured to only allow water in the floor heating manifold 34 to flow to the buffer water tank 32.

[0051] In this embodiment, the compressor 11, the first heat exchanger 12, and the indoor fan coil unit 17 form a refrigeration circuit; the compressor 11, the second heat exchanger 21, the domestic water tank 22, and the first heat exchanger 12 form a hot water circuit, wherein the hot water circuit includes a refrigerant circuit for hot water production and a water circuit for hot water production. Specifically, the compressor 11, the second heat exchanger 21, and the first heat exchanger 12 form a refrigerant circuit for hot water production, and the second heat exchanger 21 and the domestic water tank 22 are interconnected to form a water circuit for hot water production; the compressor 11, the third heat exchanger 31, the floor heating manifold 34, and the first heat exchanger 12 form a floor heating circuit, and similarly, the circuit also includes a refrigerant circuit for floor heating and a water circuit for floor heating. Specifically, the compressor, the third heat exchanger, and the first heat exchanger form the refrigerant circuit for floor heating, and the third heat exchanger, the buffer water tank and the terminal floor heating (including the floor heating manifold) form the water circuit for floor heating.

[0052] It is understood that in other embodiments, the refrigerant circuit for floor heating may further include a second heat exchanger 21, i.e., the compressor, second heat exchanger, third heat exchanger, and first heat exchanger form the refrigerant circuit for floor heating. Similarly, in other embodiments, the refrigeration circuit may further include a second heat exchanger 21, and if hot water production is not required, the second heat exchanger may be omitted. In all of the above embodiments, the description of all circuits is open-ended, i.e., it only describes the components included in the circuit, but does not limit the various circuits to include other components, such as pipelines, four-way valves, etc.

[0053] When cooling and producing domestic hot water in summer, the high-temperature and high-pressure Freon output from the output port 111 of the compressor 11 enters the second heat exchanger 21 through the first three-way valve 14 and the first refrigerant port 211 for heat exchange to heat the water in the domestic hot water tank 22, and then is output through the second refrigerant port 212 and passes through the second three-way valve 15 and the four-way valve 13, and then enters the first heat exchanger 12 from the first inlet and outlet 121 to discharge the remaining heat, and finally is output from the second inlet and outlet 122 to reach the indoor fan coil 17 for cooling. The refrigeration circuit is to return from the indoor fan coil 17, pass through the four-way valve 13 and the gas-liquid separator 16, and then enter the compressor 11 to complete a cycle.

[0054] During winter heating, the high-temperature and high-pressure Freon refrigerant output from the output port 111 of the compressor 11 enters the second heat exchanger 21 through the first three-way valve 14 and the first refrigerant port 211 for heat exchange to heat the water in the domestic hot water tank 22, and then is output through the second refrigerant port 212 and enters the third heat exchanger 31 from the third refrigerant port 311 after passing through the second three-way valve 15 and the four-way valve 13 for heat exchange. The hot water after heat exchange is output from the third water port 313 and flows into the floor heating manifold 34 for heating. The return water after heating enters the buffer water tank 32. The refrigerant after heat exchange is output from the fourth refrigerant port 312 and enters the first heat exchanger 12 from the second inlet and outlet 122. It passes through the first heat exchanger 12, the four-way valve 13, and the gas-liquid separator 16 in turn and returns to the compressor 11 to complete a cycle.

[0055] When pure hot water is used in transitional seasons or hot water is given priority in winter, the high-temperature and high-pressure Freon coming out of the compressor 11 enters the second heat exchanger 21 through the first three-way valve 14 for heat exchange to heat the water in the domestic hot water tank, and then returns to the compressor 11 through the second three-way valve 15, the first heat exchanger 12, the four-way valve 13, and the gas-liquid separator 16.

[0056] It should be noted that the above embodiments are described using Freon as an example of a refrigerant. It is understandable that other refrigerants with similar refrigeration principles to Freon may also be used in other embodiments, and this is not strictly limited here.

[0057] FIG2 shows a second embodiment of the integrated cooling and heating system of the present application, which differs from the first embodiment in that the third heat exchanger 31 can be arranged inside the host 100 .

[0058] It can be understood that the above embodiments only express the preferred implementation methods of the present application, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present application. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present application, the above technical features can be freely combined, and several deformations and improvements can be made, which all fall within the scope of protection of the present application. Therefore, all equivalent changes and modifications made to the scope of the claims of the present application should fall within the scope of coverage of the claims of the present application.

Claims

1. A cooling and heating integrated system, characterized in that: It includes a host, a terminal device and a third heat exchanger, wherein the third heat exchanger is arranged inside the host or outside the host; The host comprises: A compressor, including an input port and an output port; A first three-way valve and a four-way valve; A first heat exchanger connected to the output port through the first three-way valve and the four-way valve; A second heat exchanger comprises a first refrigerant port, a second refrigerant port, a first water port and a second water port, wherein the first refrigerant port is connected to the output port through the first three-way valve, and the second refrigerant port is connected to the first heat exchanger; a domestic water tank connected to the first water port and the second water port; The third heat exchanger comprises a third refrigerant port, a fourth refrigerant port, a third water port and a fourth water port, the third refrigerant port is connected to the output port through the first three-way valve and the four-way valve, and the fourth refrigerant port is connected to the first heat exchanger; The terminal device comprises: an indoor fan coil unit, connected to the first heat exchanger and the input port respectively; A floor heating manifold connected to the third water port and the fourth water port; Among them, the compressor, the first heat exchanger, and the indoor fan coil form a refrigeration circuit, the compressor, the second heat exchanger, the domestic water tank, and the first heat exchanger form a hot water circuit, and the compressor, the third heat exchanger, the floor heating manifold, and the first heat exchanger form a floor heating circuit.

2. The integrated cooling and heating system according to claim 1, characterized in that: The first heat exchanger has a first inlet and a second inlet, and the first inlet and the second inlet are connected to each other; the first inlet and the second inlet are connected to the output port of the compressor, and the second inlet and the second inlet are respectively connected to the indoor fan coil and the second heat exchanger.

3. The integrated cooling and heating system according to claim 2, characterized in that: The domestic water tank has a water inlet and a water outlet; The water outlet is connected to the first water port; The water inlet is connected to the second water port.

4. The integrated cooling and heating system according to claim 2, characterized in that: The third refrigerant port is communicated with the four-way valve; the fourth refrigerant port is communicated with the second inlet and outlet.

5. The integrated cooling and heating system according to claim 1, characterized in that: Also included is a second three-way valve; The second three-way valve is connected to the output port and the second refrigerant port.

6. The integrated cooling and heating system according to claim 1, characterized in that: The input port of the compressor is connected with a gas-liquid separator.

7. The integrated cooling and heating system according to claim 1, characterized in that: It also includes a buffer water tank; the buffer water tank is connected to the fourth water port and the floor heating manifold.

8. The integrated cooling and heating system according to claim 1, characterized in that: It also includes a first power pump, which is arranged between the domestic water tank and the first water port.

9. The integrated cooling and heating system according to claim 7, characterized in that: It also includes a second power pump, which is arranged between the buffer water tank and the fourth water port.

10. The integrated cooling and heating system according to claim 7, characterized in that: It also includes a one-way valve, which is arranged between the floor heating manifold and the buffer water tank and is configured to allow only water in the floor heating manifold to flow to the buffer water tank.

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