Triple co-generation air conditioning system

Abstract

The utility model discloses a triple co-generation air conditioning system which comprises a refrigerant unit, a first water circulation unit and a second water circulation unit, the refrigerant unit comprises a compressor, a first heat exchanger, a fin type heat exchanger, a second heat exchanger and a high-pressure liquid reservoir which are connected with one another, and the triple co-generation air conditioning system further comprises a first water circulation unit and a second water circulation unit. The first water circulation unit comprises a first water tank, the first water tank is provided with a first circulation water path placed in the first heat exchanger, the first circulation water path is provided with a first circulation water pump, and the second water circulation unit comprises a second water tank. The second water tank is provided with a second circulating water path placed into the second heat exchanger, and the second circulating water path is provided with a second circulating water pump. The utility model aims to overcome the problems in the prior art, and provides the triple co-generation air conditioning system capable of realizing multiple modes of refrigeration, heating, hot water and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of air energy, in particular to a triple - supply air - conditioning system. Background Art

[0002] Traditional air - source heating heat pumps can only meet the demand of air - conditioning or heating of buildings singly, and cannot meet the demand of domestic hot water at the same time. Generally, the adopted method is the comprehensive solution of heat pump + water heater. However, this solution requires two kinds of equipment, with large initial investment and complex structure.

[0003] The present utility model is precisely generated based on the above - mentioned deficiencies. Summary of the Utility Model

[0004] The purpose of the present utility model is to overcome the problems of the prior art and provide a triple - supply air - conditioning system capable of realizing multiple modes such as refrigeration, heating, and hot water.

[0005] To achieve the above purpose, the present utility model adopts the following scheme:

[0006] A triple - supply air - conditioning system includes: a refrigerant unit, the refrigerant unit includes a compressor, a first heat exchanger, a fin heat exchanger, a second heat exchanger and a high - pressure liquid receiver which are connected to each other. The triple - supply air - conditioning system also includes a first water circulation unit and a second water circulation unit. The first water circulation unit includes a first water tank. The first water tank is provided with a first circulation water path that is led into the first heat exchanger. A first circulation water pump is arranged on the first circulation water path. The second water circulation unit includes a second water tank. The second water tank is provided with a second circulation water path that is led into the second heat exchanger. A second circulation water pump is arranged on the second circulation water path.

[0007] The refrigerant unit further includes a first four - way valve and a second four - way valve. The first four - way valve includes an A1 interface, a B1 interface, a C1 interface and a D1 interface. The second four - way valve includes an A2 interface, a B2 interface, a C2 interface and a D2 interface. The A1 interface of the first four - way valve is connected to the compressor discharge port. The B1 interface of the first four - way valve is connected to the first heat exchanger. The C1 interface of the first four - way valve is connected to the compressor suction port. The A2 interface of the second four - way valve is connected to the D1 interface of the first four - way valve. The B2 interface of the second four - way valve is connected to the water inlet of the second heat exchanger. The C2 interface of the second four - way valve is connected to the compressor suction port. The D2 interface of the second four - way valve is connected to the inlet of the fin heat exchanger.

[0008] The refrigerant unit further includes an expansion valve and a solenoid valve SV1, and the combined heat, cooling and domestic hot water supply air-conditioning system further includes a refrigeration mode. In the refrigeration mode, the refrigerant of the compressor sequentially passes through the A1 port and D1 port of the first four-way valve, the A2 port and D2 port of the second four-way valve, the fin heat exchanger, the high-pressure liquid receiver, the solenoid valve SV1, the second heat exchanger, the B2 port and C2 port of the second four-way valve, and then returns to the compressor through the intake port of the compressor.

[0009] It further includes a solenoid valve SV2, and the combined heat, cooling and domestic hot water supply air-conditioning system further includes a heating mode. In the heating mode, the refrigerant of the compressor sequentially passes through the A1 port and D1 port of the first four-way valve, the A2 port and B2 port of the second four-way valve, the second heat exchanger, the high-pressure liquid receiver, the expansion valve, the solenoid valve SV2, the fin heat exchanger, the C2 port and D2 port of the second four-way valve, and then returns to the compressor through the intake port of the compressor.

[0010] It further includes a solenoid valve SV3, and the combined heat, cooling and domestic hot water supply air-conditioning system further includes a domestic hot water supply mode. In the domestic hot water supply mode, the refrigerant of the compressor sequentially passes through the A1 port and B1 port of the first four-way valve, the first heat exchanger, the high-pressure liquid receiver, the expansion valve, the solenoid valve SV2, the fin heat exchanger, the B2 port and C2 port of the second four-way valve, and then returns to the compressor through the intake port of the compressor.

[0011] The combined heat, cooling and domestic hot water supply air-conditioning system further includes a domestic hot water supply defrosting mode. In the domestic hot water supply defrosting mode, the refrigerant of the compressor sequentially passes through the A1 port and D1 port of the first four-way valve, the A2 port and D2 port of the second four-way valve, the fin heat exchanger, the high-pressure liquid receiver, the solenoid valve SV3, the first heat exchanger, the B1 port and C1 port of the first four-way valve, and then returns to the compressor through the intake port of the compressor.

[0012] The combined heat, cooling and domestic hot water supply air-conditioning system further includes a refrigeration and domestic hot water full recovery mode. In the refrigeration and domestic hot water full recovery mode, the refrigerant of the compressor sequentially passes through the A1 port and B1 port of the first four-way valve, the first heat exchanger, the high-pressure liquid receiver, the expansion valve, the solenoid valve SV1, the second heat exchanger, the B2 port and C2 port of the second four-way valve, and then returns to the compressor through the intake port of the compressor.

[0013] A first check valve is provided between the outlet of the first heat exchanger and the inlet of the high-pressure liquid receiver, a second check valve is provided between the outlet of the second heat exchanger and the inlet of the high-pressure liquid receiver, and a third check valve is provided between the outlet of the fin heat exchanger and the high-pressure liquid receiver.

[0014] One of the first water tank or the second water tank is further connected to a floor heating module, and a mixing valve is connected to the water outlets of the first water tank and the second water tank.

[0015] The described compressor, first heat exchanger, fin heat exchanger, second heat exchanger, high-pressure liquid storage tank, first water circulation unit and second water circulation unit are arranged in an integrated chassis.

[0016] Compared with the existing technology, the present utility model has the following advantages: When in use in this embodiment, refrigeration is carried out through the refrigerant unit. During refrigeration, the refrigerant exchanges heat through the first heat exchanger and the second heat exchanger. When hot water is needed, the first circulation water pump is started. When the first circulation water pump is started, the water in the first water tank passes through the first circulation water path. The cold water in the first circulation water path absorbs the heat of the first heat exchanger and heats the cold water in the first water tank. At the same time, the second circulation water pump can also be started. When the second circulation water pump is started, the water in the second water tank passes through the second circulation water path. The cold water in the second circulation water path absorbs the heat of the second heat exchanger and heats the cold water in the second water tank. Users can heat water through the separately provided first water circulation unit and second water circulation unit. During refrigeration, heat can be recovered and hot water can be used, which is very convenient. Brief Description of the Drawings

[0017] Figure 1 One of the structural schematic diagrams of the triple-supply air-conditioning system of the present utility model;

[0018] Figure 2 The top view of the triple-supply air-conditioning system of the present utility model;

[0019] Figure 3 Another structural schematic diagram of the triple-supply air-conditioning system of the present utility model;

[0020] Figure 4 The refrigerant system flow chart of the refrigeration mode of the triple-supply air-conditioning system of the present utility model;

[0021] Figure 5 The refrigerant system flow chart of the heating mode of the triple-supply air-conditioning system of the present utility model;

[0022] Figure 6 The refrigerant system flow chart of the hot water production mode of the triple-supply air-conditioning system of the present utility model;

[0023] Figure 7 The refrigerant system flow chart of the hot water production and defrosting mode of the triple-supply air-conditioning system of the present utility model;

[0024] Figure 8 The refrigerant system flow chart of the refrigeration and hot water full recovery mode of the triple-supply air-conditioning system of the present utility model;

[0025] Figure 9 The schematic diagram of the first water circulation unit of the triple-supply air-conditioning system of the present utility model;

[0026] Figure 10 Schematic diagram of the second water circulation unit of the combined cooling, heating and power air-conditioning system of the present utility model;

[0027] Figure 11 Schematic diagram of the second placement method of the first water tank and the second water tank of the combined cooling, heating and power air-conditioning system of the present utility model;

[0028] Figure 12 Schematic diagram of the third placement method of the first water tank and the second water tank of the combined cooling, heating and power air-conditioning system of the present utility model.

[0029] Reference numerals: refrigerant unit 1, compressor 11, first heat exchanger 12, fin heat exchanger 13, second heat exchanger 14, high-pressure liquid receiver 15, first four-way valve 16, second four-way valve 17, expansion valve 18; first water circulation unit 2, first water tank 21, first circulation water path 22, first circulation water pump 23; second water circulation unit 3, second water tank 31, second circulation water path 32, second circulation water pump 33; first one-way valve 41, second one-way valve 42, third one-way valve 43; mixing valve 5; integrated chassis 6; solenoid valves SV1, SV2, SV3. Detailed implementation manners

[0030] The present utility model will be further described in detail below in conjunction with embodiments:

[0031] The specific implementation manners of the present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0032] As Figures 1 to 12 shown, a combined cooling, heating and power air-conditioning system includes: a refrigerant unit 1, the refrigerant unit 1 includes a compressor 11, a first heat exchanger 12, a fin heat exchanger 13, a second heat exchanger 14 and a high-pressure liquid receiver 15 which are connected to each other. The combined cooling, heating and power air-conditioning system further includes a first water circulation unit 2 and a second water circulation unit 3. The first water circulation unit 2 includes a first water tank 21. The first water tank 21 is provided with a first circulation water path 22 that is placed into the first heat exchanger 12. A first circulation water pump 23 is provided on the first circulation water path 22. The second water circulation unit 3 includes a second water tank 31. The second water tank 31 is provided with a second circulation water path 32 that is placed into the second heat exchanger 14. A second circulation water pump 33 is provided on the second circulation water path 32.

[0033] In the use of this embodiment, refrigeration is carried out by the refrigerant unit 1. During refrigeration, the refrigerant exchanges heat through the first heat exchanger 12 and the second heat exchanger 14. When hot water is needed, the first circulation water pump 23 is started. When the first circulation water pump 23 is started, the water in the first water tank 21 passes through the first circulation water path 22. The cold water in the first circulation water path 22 absorbs the heat of the first heat exchanger 12 to heat the cold water in the first water tank 21. At the same time, the second circulation water pump 33 can also be started. When the second circulation water pump 33 is started, the water in the second water tank 31 passes through the second circulation water path 32. The cold water in the second circulation water path 32 absorbs the heat of the second heat exchanger 14 to heat the cold water in the second water tank 31. Users can heat water through the separately provided first water circulation unit 2 and the second water circulation unit 3. During refrigeration, heat can be recovered and hot water can be used, which is very convenient.

[0034] As Figure 4 shown, the refrigerant unit 1 further includes a first four-way valve 16 and a second four-way valve 17. The first four-way valve 16 includes an A1 interface, a B1 interface, a C1 interface, and a D1 interface. The second four-way valve 17 includes an A2 interface, a B2 interface, a C2 interface, and a D2 interface. The A1 interface of the first four-way valve 16 is connected to the compressor discharge port. The B1 interface of the first four-way valve 16 is connected to the first heat exchanger 12. The C1 interface of the first four-way valve 16 is connected to the compressor 11 suction port. The A2 interface of the second four-way valve 17 is connected to the D1 interface of the first four-way valve 16. The B2 interface of the second four-way valve 17 is connected to the inlet of the second heat exchanger 14. The C2 interface of the second four-way valve 17 is connected to the compressor 11 suction port. The D2 interface of the second four-way valve 17 is connected to the inlet of the fin heat exchanger 13. The first four-way valve 16 and the second four-way valve 17 are provided to connect the various components within the refrigerant unit 1, providing more channels so that the refrigerant unit 1 can have more usage states.

[0035] As Figure 4 shown, the refrigerant unit 1 further includes an expansion valve 18 and a solenoid valve SV1. The combined heat and power air conditioning system further includes a refrigeration mode. In the refrigeration mode, the refrigerant of the compressor 11 sequentially passes through the A1 interface and the D1 interface of the first four-way valve 16, the A2 interface and the D2 interface of the second four-way valve 17, the fin heat exchanger 13, the high-pressure liquid receiver 15, the solenoid valve SV1, the second heat exchanger 14, the B2 interface and the C2 interface of the second four-way valve 17, and then returns to the compressor 11 through the intake port of the compressor 11. Specifically, see Figure 4, in the refrigeration mode, the compressor 11 compresses the low-temperature and low-pressure gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant. The high-temperature and high-pressure gaseous refrigerant flows out from the exhaust port of the compressor 11 and enters the first four-way valve 16, flowing from the A1 interface of the first four-way valve 16 to the D1 interface, and entering the fin heat exchanger 13 from the D1 interface. The high-temperature and high-pressure refrigerant exchanges heat in the fin heat exchanger 13, and the heat after the exchange is carried by the air flow to the external ambient air. The refrigerant then undergoes a phase change and condenses into a liquid or a liquid-gas two-phase refrigerant. The liquid and gaseous refrigerant enters the high-pressure liquid receiver 15. The low-temperature refrigerant flows out from the high-pressure liquid receiver 15, passes through the expansion valve 18, and then enters the second heat exchanger 14. The low-temperature refrigerant absorbs the heat of the air around the second heat exchanger 14, causing the temperature of the air around the second heat exchanger 14 to decrease. The cold air enters the room, and the refrigerant then undergoes a phase change and mostly evaporates into a low-temperature and low-pressure gaseous refrigerant, flowing back into the compressor 11 through the intake port of the compressor 11.

[0036] As Figure 5 shown, it further includes a solenoid valve SV2. The combined heat and power air-conditioning system further includes a heating mode. In the heating mode, the refrigerant of the compressor 11 sequentially passes through the A1 interface and D1 interface of the first four-way valve 16, the A2 interface and B2 interface of the second four-way valve 17, the second heat exchanger 14, the high-pressure liquid receiver 15, the expansion valve 18, the solenoid valve SV2, the fin heat exchanger 13, and the C2 interface and D2 interface of the second four-way valve 17, and then flows back to the compressor 11 through the intake port of the compressor 11. Specifically, referring to Figure 5 , in the heating mode, the second four-way valve 17 is powered on. The compressor 11 compresses the low-temperature and low-pressure gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant. The high-temperature and high-pressure gaseous refrigerant is discharged from the exhaust port of the compressor 11 and enters the first four-way valve 16, flowing from the A1 interface of the first four-way valve 16 to the D1 interface, and entering the second heat exchanger 14 from the D1 interface. The high-temperature and high-pressure refrigerant exchanges heat with the air flow in the second heat exchanger 14, and the refrigerant releases heat. The hot air enters the room to increase the indoor temperature. The refrigerant then undergoes a phase change and condenses into a liquid or a liquid-gas two-phase refrigerant. The liquid and gaseous refrigerant flows out from the second heat exchanger 14 and enters the high-pressure liquid receiver 15. The low-temperature and low-pressure refrigerant flows out from the high-pressure liquid receiver 15 and enters the fin heat exchanger 13, absorbs the heat in the external air flow, and undergoes a phase change into a low-pressure gaseous refrigerant, flowing back into the compressor 11 through the intake port of the compressor 11.

[0037] As Figure 6As shown, it further includes a solenoid valve SV3. The combined heat and power air conditioning system further includes a hot water heating mode. In the hot water heating mode, the refrigerant of the compressor 11 sequentially passes through the A1 port and the B1 port of the first four-way valve 16, the first heat exchanger 12, the high-pressure liquid receiver 15, the expansion valve 18, the solenoid valve SV2, the finned heat exchanger 13, the B2 port and the C2 port of the second four-way valve 17, and then returns to the compressor 11 through the intake port of the compressor 11. Specifically, refer to Figure 6 , in the hot water heating mode, the first four-way valve 16 is powered on, the second four-way valve 17 is powered on, and the first circulating water pump 23 is powered on. The compressor 11 compresses the low-temperature and low-pressure gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant. The high-temperature and high-pressure gaseous refrigerant is discharged from the exhaust port of the compressor 11 and enters the first four-way valve 16, flows from the A1 port of the first four-way valve 16 to the B1 port, and enters the first heat exchanger 12 from the B1 port. The high-temperature and high-pressure refrigerant exchanges heat with the cold water in the first circulating water path 22 in the first heat exchanger 12. The water in the first circulating water path 22 circulates with the first water tank 21 through the first circulating water pump 23 to heat the water in the first water tank 21, and the refrigerant then undergoes a phase change and condenses into a liquid or a liquid-gas two-phase refrigerant. The liquid and gaseous refrigerant flows out of the first heat exchanger 12 and enters the high-pressure liquid receiver 15. The low-temperature and low-pressure refrigerant flows out of the high-pressure liquid receiver 15 and enters the finned heat exchanger 13, absorbs the heat in the external air flow, undergoes a phase change into a low-pressure gaseous refrigerant, and returns to the compressor 11 through the intake port of the compressor 11.

[0038] As Figure 7 shown, the combined heat and power air conditioning system further includes a hot water defrosting mode. In the hot water defrosting mode, the refrigerant of the compressor 11 sequentially passes through the A1 port and the D1 port of the first four-way valve 16, the A2 port and the D2 port of the second four-way valve 17, the finned heat exchanger 13, the high-pressure liquid receiver 15, the solenoid valve SV3, the first heat exchanger 12, the B1 port and the C1 port of the first four-way valve 16, and then the B2 port and the C2 port, and then returns to the compressor 11 through the intake port of the compressor 11. Specifically, refer to Figure 7, in the hot water production mode, the first four-way valve 16 is de-energized, the second four-way valve 17 is de-energized, the solenoid valve SV1 is de-energized, the solenoid valve SV2 is de-energized, the solenoid valve SV3 is energized. The compressor 11 compresses the low-temperature and low-pressure gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant. The high-temperature and high-pressure gaseous refrigerant is discharged from the exhaust port of the compressor 11 and enters the first four-way valve 16, flows from the A1 interface of the first four-way valve 16 to the D1 interface, and enters the fin heat exchanger 13 from the D1 interface. The high-temperature and high-pressure refrigerant exchanges heat in the fin heat exchanger 13, and the exchanged heat is carried by the air flow to the external ambient air. The refrigerant then undergoes a phase change and condenses into a liquid or a liquid-gas two-phase refrigerant. The liquid and gaseous refrigerant enters the high-pressure liquid receiver 15. The low-temperature refrigerant flows out of the high-pressure liquid receiver 15, passes through the expansion valve 18, and then enters the first heat exchanger 12 through the solenoid valve SV3, absorbs the heat in the external air flow, and undergoes a phase change into a low-pressure gaseous refrigerant. After passing through the B1 interface and C1 interface of the first four-way valve 16, it flows back into the compressor 11 through the intake port of the compressor 11.

[0039] As Figure 8 shown, the combined cooling, heating and power air-conditioning system further includes a cooling and hot water full recovery mode. In the cooling and hot water full recovery mode, the refrigerant of the compressor 11 sequentially passes through the A1 interface and B1 interface of the first four-way valve 16, the first heat exchanger 12, the high-pressure liquid receiver 15, the expansion valve 18, the solenoid valve SV1, the second heat exchanger 14, and the B2 interface and C2 interface of the second four-way valve 17, and then flows back to the compressor 11 through the intake port of the compressor 11. Specifically, refer to Figure 8, in the full recovery mode of refrigeration and hot water, the first four-way valve 16 is energized, the second four-way valve 17 is not energized, the solenoid valve SV1 is energized, the solenoid valve SV2 is not energized, the solenoid valve SV3 is not energized, the first circulating water pump 23 is energized, the second circulating water pump 33 is energized, the compressor 11 compresses the low-temperature and low-pressure gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant. The high-temperature and high-pressure gaseous refrigerant is discharged from the exhaust port of the compressor 11 and enters the first four-way valve 16, flows from the A1 interface of the first four-way valve 16 to the B1 interface, and enters the first heat exchanger 12 from the B1 interface. The high-temperature and high-pressure refrigerant exchanges heat with the cold water in the first circulating water path 22 in the second heat exchanger 14. The water in the first circulating water path 22 circulates with the first water tank 21 through the first circulating water pump 23 to heat the water in the first water tank 21, and the refrigerant then undergoes a phase change and condenses into a liquid or a liquid-vapor two-phase refrigerant. The liquid and gaseous refrigerant flows out of the first heat exchanger 12 and enters the high-pressure liquid receiver 15, and enters the second heat exchanger 14 after passing through the expansion valve 18 and the solenoid valve SV1 from the high-pressure liquid receiver 15. The refrigerant exchanges heat with the cold water in the second circulating water path 32 in the second heat exchanger 14. The water in the second circulating water path 32 circulates with the second water tank 31 through the second circulating water pump 33 to heat the water in the second water tank 31, absorbs the heat in the external air flow, and the liquid and gaseous refrigerant phase-changes into a low-pressure gaseous refrigerant, and flows back into the compressor 11 through the B2 interface and the C2 interface of the second four-way valve 17 and the intake port of the compressor 11. The above-mentioned expansion valve is an electronic expansion valve.

[0040] As Figure 4 shown, a first one-way valve 41 is provided between the outlet of the first heat exchanger 12 and the inlet of the high-pressure liquid receiver 15, a second one-way valve 42 is provided between the outlet of the second heat exchanger 14 and the inlet of the high-pressure liquid receiver 15, and a third one-way valve 43 is provided between the outlet of the finned heat exchanger 13 and the inlet of the high-pressure liquid receiver 15 to prevent backflow.

[0041] As Figure 2 shown, the first heat exchanger 12 is a high-efficiency tank, and the second heat exchanger 14 is a plate heat exchanger, which is convenient for heat exchange.

[0042] As Figure 1 Or Figure 3 shown, one of the first water tank 21 or the second water tank 31 is further connected with a floor heating module. A mixing valve 5 is connected to the water outlets of the first water tank 21 and the second water tank 31. The floor heating module is used for heating in winter and can be manually opened or closed. The mixing valve can make the hot water discharged from the first water tank 21 and the second water tank 31 be discharged at a constant temperature, which is more convenient for users.

[0043] As Figure 1As shown, the compressor 11, the first heat exchanger 12, the fin heat exchanger 13, the second heat exchanger 14, the high-pressure liquid storage tank 15, the first water circulation unit 2 and the second water circulation unit 3 are arranged in an integrated chassis 6. When the volume of the integrated chassis 6 is large, they are arranged in the integrated chassis, which is convenient for installation. As Figures 11 to 12 shown, it can be imagined that the first water tank 21 and the second water tank 31 of the first water circulation unit 2 are arranged at intervals left and right. Of course, the first water tank 21 and the second water tank 31 can also be arranged at intervals up and down. The first water tank 21 and the second water tank 31 can also be arranged side by side left and right and at intervals front and back. The volume sizes of the first water tank 21 and the second water tank 31 are only exemplified in the figure and do not limit the volumes of the first water tank 21 and the second water tank 31.

[0044] The above has generally described the present invention in detail. However, based on the present invention, some modifications or improvements can be made, which are obvious to those of ordinary skill in the art. Therefore, modifications or improvements made without departing from the spirit and idea of the present invention are within the protection scope of the present invention.

Claims

1. A trigeneration air conditioning system, characterized in that: include: A refrigerant unit (1), the refrigerant unit (1) comprising a compressor (11), a first heat exchanger (12), a fin heat exchanger (13), a second heat exchanger (14) and a high-pressure liquid storage tank (15) which are interconnected. The trigeneration air-conditioning system further comprises a first water circulation unit (2) and a second water circulation unit (3). The first water circulation unit (2) comprises a first water tank (21). The first water tank (21) is provided with a first circulation water path (22) placed in the first heat exchanger (12). A first circulation water pump (23) is provided on the first circulation water path (22). The second water circulation unit (3) comprises a second water tank (31). The second water tank (31) is provided with a second circulation water path (32) placed in the second heat exchanger (14). A second circulation water pump (33) is provided on the second circulation water path (32).

2. The trigeneration air conditioning system according to claim 1, characterized in that: The refrigerant unit (1) further comprises a first four-way valve (16) and a second four-way valve (17), wherein the first four-way valve (16) comprises an A1 interface, a B1 interface, a C1 interface and a D1 interface, and the second four-way valve (17) comprises an A2 interface, a B2 interface, a C2 interface and a D2 interface, wherein the A1 interface of the first four-way valve (16) is connected to the exhaust port of the compressor, the B1 interface of the first four-way valve (16) is connected to the first heat exchanger (12), the C1 interface of the first four-way valve (16) is connected to the return air port of the compressor (11), the A2 interface of the second four-way valve (17) is connected to the D1 interface of the first four-way valve (16), the B2 interface of the second four-way valve (17) is connected to the water inlet of the second heat exchanger (14), the C2 interface of the second four-way valve (17) is connected to the return air port of the compressor (11), and the D2 interface is connected to the inlet of the fin heat exchanger (13).

3. The trigeneration air conditioning system according to claim 2, characterized in that: The refrigerant unit (1) also includes an expansion valve (18) and a solenoid valve SV1, and the trigeneration air-conditioning system also includes a cooling mode, wherein in the cooling mode, the refrigerant of the compressor (11) passes through the A1 interface and the D1 interface of the first four-way valve (16), the A2 interface and the D2 interface of the second four-way valve (17), the fin heat exchanger (13), the high-pressure liquid storage tank (15), the expansion valve (18), the solenoid valve SV1, the second heat exchanger (14), the B2 interface and the C2 interface of the second four-way valve (17), and then flows back to the compressor (11) through the air inlet of the compressor (11).

4. The trigeneration air conditioning system according to claim 3, characterized in that: The trigeneration air conditioning system also includes a solenoid valve SV2. The trigeneration air conditioning system also includes a heating mode. In the heating mode, the refrigerant of the compressor (11) sequentially passes through the A1 interface and the D1 interface of the first four-way valve (16), the A2 interface and the B2 interface of the second four-way valve (17), the second heat exchanger (14), the high-pressure liquid storage tank (15), the expansion valve (18), the solenoid valve SV2, the fin heat exchanger (13), the C2 interface and the D2 interface of the second four-way valve (17), and then flows back to the compressor (11) through the air inlet of the compressor (11).

5. The trigeneration air conditioning system according to claim 4, characterized in that: The trigeneration air conditioning system also includes a solenoid valve SV3. The trigeneration air conditioning system also includes a hot water making mode. In the hot water making mode, the refrigerant of the compressor (11) sequentially passes through the A1 interface and the B1 interface of the first four-way valve (16), the first heat exchanger (12), the high-pressure liquid storage tank (15), the expansion valve (18), the solenoid valve SV2, the fin heat exchanger (13), the B2 interface and the C2 interface of the second four-way valve (17), and then flows back to the compressor (11) through the air inlet of the compressor (11).

6. The trigeneration air conditioning system according to claim 5, characterized in that: The trigeneration air conditioning system also includes a hot water defrosting mode, wherein in the hot water defrosting mode, the refrigerant of the compressor (11) passes through the A1 interface and the D1 interface of the first four-way valve (16), the A2 interface and the D2 interface of the second four-way valve (17), the fin heat exchanger (13), the high-pressure liquid storage tank (15), the solenoid valve SV3, the first heat exchanger (12), the B1 interface and the C1 interface of the first four-way valve (16), and then flows back to the compressor (11) through the air inlet of the compressor (11).

7. The trigeneration air conditioning system according to claim 3, characterized in that: The trigeneration air conditioning system also includes a full recovery mode of cooling and hot water, wherein in the full recovery mode of cooling and hot water, the refrigerant of the compressor (11) passes through the A1 interface and the B1 interface of the first four-way valve (16), the first heat exchanger (12), the high-pressure liquid storage tank (15), the expansion valve (18), the solenoid valve SV1, the second heat exchanger (14), the B2 interface and the C2 interface of the second four-way valve (17), and then flows back to the compressor (11) through the air inlet of the compressor (11).

8. The trigeneration air conditioning system according to any one of claims 2 to 7, characterized in that: A first one-way valve (41) is provided between the outlet of the first heat exchanger (12) and the inlet of the high-pressure liquid reservoir (15), a second one-way valve (42) is provided between the outlet of the second heat exchanger (14) and the inlet of the high-pressure liquid reservoir (15), and a third one-way valve (43) is provided between the outlet of the fin heat exchanger (13) and the high-pressure liquid reservoir (15).

9. The trigeneration air conditioning system according to any one of claims 2 to 7, characterized in that: One of the first water tank (21) or the second water tank (31) is also connected to a floor heating module, and a mixing valve (5) is connected to the water outlet of the first water tank (21) and the second water tank (31).

10. The trigeneration air conditioning system according to claim 1, characterized in that: The compressor (11), the first heat exchanger (12), the fin heat exchanger (13), the second heat exchanger (14), the high-pressure liquid storage tank (15), the first water circulation unit (2) and the second water circulation unit (3) are arranged in an integrated chassis (6).

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