A dual-mode heat exchanger, a combined cooling and heating system and method having the same

Abstract

The application discloses a double-working-condition heat exchanger, a cold-heat combined supply system and method with the same, and belongs to the technical field of heat exchangers. The double-working-condition heat exchanger comprises a first fan, an atomizing spraying device, an air conditioner condenser, a filler layer, a second fan, a demister, an air outlet, a circulating pump and a water collecting tank. The control method further comprises an air conditioner refrigeration method, a cold-heat combined supply method, a single hot water production method, a combined heating method and a coupled heating method. The application improves the heat exchange efficiency and recovers the heat pump evaporation cold energy in the refrigeration working condition, thereby improving the condensation efficiency to realize efficient refrigeration. The air conditioner condensation waste heat is recovered to produce hot water for storage and utilization, the problems of high cost, inconvenient installation, complex full heat recovery mode control, large investment and land occupation of absorption type refrigeration waste heat utilization and complex operation management of a conventional water-cooled air conditioner are solved, and the system comprehensive energy efficiency is greatly improved, energy is saved, and the investment and operation cost is reduced.

Description

Technical Field

[0001] This invention relates to a dual-condition heat exchanger and a combined cooling and heating system and method thereof, particularly a combined cooling and heating system and method that improves condensation efficiency and achieves high-efficiency cooling by efficiently exchanging heat and recovering the evaporative cold energy of a heat pump in cooling mode, while simultaneously recovering and storing waste heat from air conditioning condensation for heating, belonging to the field of HVAC technology. Background Technology

[0002] Vapor compression air conditioners and heat pumps are common equipment in modern production and daily life, consuming huge amounts of energy. Water-cooled air conditioners have a higher coefficient of performance (COP) than air-cooled air conditioners due to their higher heat exchange efficiency. However, air-cooled air conditioners, especially household air conditioners, are difficult to cool using traditional cooling towers due to installation conditions and investment limitations. Existing evaporative condensers have limited functionality, and the airflow of each part is difficult to control accurately. Recovering and utilizing the waste heat emitted by the condenser during air conditioning cooling and the cold energy generated by the evaporator during heat pump heating can significantly improve the overall energy efficiency ratio, but controlling it using a total heat recovery method is complex and can also lead to the problem of a large amount of waste heat going unused. Using waste heat to drive absorption refrigeration can solve the utilization problem, but it requires increased equipment investment, floor space, and operational management burden. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a novel dual-condition heat exchanger and a combined cooling and heating system and method that improves condensation efficiency and achieves high-efficiency cooling by increasing heat exchange efficiency and recovering heat pump evaporation energy during refrigeration, while also partially recovering and storing waste heat from air conditioning condensation for heating and simplifying control to improve overall energy efficiency.

[0004] Technical Solution: The dual-condition heat exchanger of the present invention includes a first fan, an atomizing spray device, an air conditioning condenser, a packing layer, a second fan, a demister, an air outlet, a circulating pump, and a water collection tank; the first fan is located above one side of the dual-condition heat exchanger; the atomizing spray device is located below the first fan and above the air conditioning condenser; the air conditioning condenser is located above the packing layer; the packing layer is located above the water collection tank; the second fan is located on one side of the packing layer; the demister is located above the water collection tank and below the air outlet on the other side of the air conditioning condenser; the air outlet is located above the other side of the first fan; the inlet and outlet of the circulating pump are respectively connected to the water outlet of the water collection tank and the water inlet of the atomizing spray device.

[0005] The dual-condition heat exchanger of the present invention further includes a heat pump evaporator; the heat pump evaporator is located above the demister and below the air outlet.

[0006] The dual-condition heat exchanger of the present invention further includes a demineralized water tank; the demineralized water tank is connected to the inlet of the circulating pump via a pipeline.

[0007] The air conditioning system including a dual-condition heat exchanger according to the present invention further includes an air conditioning compressor, a coupling heat exchanger, a four-way valve, an air conditioning evaporator, and an air conditioning flow regulating device; the exhaust port of the air conditioning compressor is connected to the inlet of the air conditioning side of the coupling heat exchanger through a pipe; the outlet of the air conditioning side of the coupling heat exchanger is connected to port a of the four-way valve through a pipe; port b of the four-way valve is connected to the inlet of the air conditioning condenser of the dual-condition heat exchanger through a pipe; the inlet of the air conditioning flow regulating device is connected to the outlet of the air conditioning condenser of the dual-condition heat exchanger through a pipe, and the outlet is connected to the inlet of the air conditioning evaporator through a pipe; the outlet of the air conditioning evaporator is connected to port d of the four-way valve through a pipe; and port c of the four-way valve is connected to the air inlet of the air conditioning compressor through a pipe.

[0008] The heat pump system including a dual-condition heat exchanger according to the present invention further includes a heat pump compressor, a heat pump condenser, a heat pump throttling device, a first heating reversing valve, and a second heating reversing valve. The exhaust port of the heat pump compressor is connected to the inlet of the heat pump condenser via a pipe. The outlet of the heat pump condenser is connected to the inlet of the heat pump throttling device via a pipe. The outlet of the heat pump throttling device is connected to port a of the first heating reversing valve via a pipe. Port b of the first heating reversing valve is connected to the inlet of the heat pump side of the air conditioning system coupling heat exchanger via a pipe, and port c is connected to the inlet of the heat pump evaporator of the dual-condition heat exchanger via a pipe. Port a of the second heating reversing valve is connected to the outlet of the heat pump side of the air conditioning system coupling heat exchanger via a pipe, port c is connected to the outlet of the heat pump evaporator of the dual-condition heat exchanger via a pipe, and port b is connected to the air inlet of the heat pump compressor via a pipe.

[0009] The heat pump system including a dual-condition heat exchanger according to the present invention also includes a hot water storage tank; the hot water storage tank is connected to the heat pump condenser of the heat pump system through a pipeline.

[0010] The present invention discloses an air conditioning refrigeration method, the specific refrigeration steps of which are as follows: An appropriate amount of demineralized water is injected into the water collection tank; the air conditioning compressor, first fan, second fan, and circulating pump are started; the air conditioning working fluid enters the air conditioning condenser through the air conditioning side inlet and outlet of the coupling heat exchanger and the a and b ports of the four-way valve, where it condenses and releases heat; the air drawn in by the first fan and the droplets sprayed by the atomizing spray device driven by the circulating pump cooperate with the air conditioning condenser to exchange heat; the condensed working fluid expands and absorbs heat in the air conditioning evaporator after being throttled by the air conditioning flow regulating device, and then enters the air conditioning compressor through the d and c ports of the four-way valve to complete the air conditioning refrigeration cycle; the sprayed water, after exchanging heat with the air conditioning condenser, falls into the packing layer and exchanges heat and mass with the external air drawn in by the second fan, and then falls into the water collection tank; the heated air passes through the demister to capture droplets and then passes through the heat pump evaporator and is discharged through the air outlet; the above process is repeated cyclically to achieve the air conditioning refrigeration operation of the system.

[0011] The present invention discloses a combined cooling and heating method, the specific steps of which are as follows: An appropriate amount of demineralized water is injected into the water collection tank; the air conditioning compressor, the first fan, the second fan, and the circulating pump are started; the air conditioning working fluid enters the air conditioning condenser through the air conditioning side inlet and outlet of the coupling heat exchanger and the a and b ports of the four-way valve, where it condenses and releases heat; the air drawn in by the first fan and the liquid droplets sprayed by the atomizing spray device driven by the circulating pump cooperate with the air conditioning condenser to exchange heat; the condensed working fluid expands and absorbs heat in the air conditioning evaporator after being throttled by the air conditioning flow regulating device, and then enters the air conditioning compressor through the d and c ports of the four-way valve to complete the air conditioning refrigeration cycle; the sprayed water after exchanging heat with the air conditioning condenser falls... The air enters the packing layer and exchanges heat and mass with the outside air drawn in by the second fan, then falls into the water collection tank; the heated air passes through the demister to capture droplets and then passes through the heat pump evaporator and is discharged through the air outlet; the heat pump compressor is started, the heat pump working fluid is compressed and enters the heat pump condenser to exchange heat and condense with the tap water, then passes through the heat pump throttling device and enters the coupling heat exchanger through the a and b ports of the first heating reversing valve to absorb the thermal expansion of the air conditioner condensation, and then enters the heat pump compressor through the a and b ports of the second heating reversing valve, completing the heat pump heating cycle; the tap water heated by the heat pump condenser enters the hot water storage tank for storage and use; the above process is repeated to realize the combined cooling and heating of the system.

[0012] The present invention discloses a single-system hot water method, the specific steps of which are as follows: The first fan, the second fan, and the heat pump compressor are started. The heat pump working fluid is compressed and enters the heat pump condenser to exchange heat with tap water and condense. Then, it is throttled by the heat pump throttling device and enters the heat pump evaporator through the a and c ports of the first heating reversing valve to evaporate and absorb heat. Finally, it enters the heat pump compressor through the c and b ports of the second heating reversing valve, completing the heat pump single-system hot water cycle. The tap water heated by the heat pump condenser enters the hot water storage tank for storage and use. The above process is repeated cyclically to achieve single-system hot water operation of the system.

[0013] The combined heating method described in this invention comprises the following steps: starting the air conditioning compressor, the first fan, and the second fan; the air conditioning working fluid enters the air conditioning evaporator through the air conditioning side inlet and outlet of the coupling heat exchanger and the a and d ports of the four-way valve, where it condenses and releases heat; after condensation, the working fluid expands and absorbs heat in the air conditioning condenser after being throttled by the air conditioning flow regulating device, and then enters the air conditioning compressor through the b and c ports of the four-way valve to complete the air conditioning heating cycle; the air drawn in by the first fan exchanges heat with the air conditioning condenser and then mixes with the outside air drawn in by the second fan. The water passes through the demister; the heat pump compressor is started, the heat pump working fluid is compressed and enters the heat pump condenser to exchange heat with the tap water and condense. Then, it is throttled by the heat pump throttling device and enters the heat pump evaporator through the a and c ports of the first heating reversing valve to evaporate and absorb heat. Then, it enters the heat pump compressor through the c and b ports of the second heating reversing valve, completing the heat pump hot water cycle. The tap water heated by the heat pump condenser enters the hot water storage tank for use. The air passing through the demister exchanges heat with the heat pump evaporator and is discharged through the air outlet. The above process is repeated to realize the combined heating operation of the system.

[0014] The present invention discloses a coupled heating method, the specific steps of which are as follows: The air conditioning compressor and the first fan are started. The air conditioning working fluid enters the air conditioning evaporator through the air conditioning side inlet and outlet of the coupled heat exchanger and the a and d ports of the four-way valve, where it condenses and releases heat. After condensation, the working fluid expands and absorbs heat in the air conditioning condenser after being throttled by the air conditioning flow regulating device. Then, it enters the air conditioning compressor through the b and c ports of the four-way valve to complete the air conditioning heating cycle. The air drawn in by the first fan exchanges heat with the air conditioning condenser and mixes with the external air drawn in by the second fan. After passing through the demister and the heat pump evaporator, it is discharged through the air outlet. The heat pump compressor is started, and the heat pump working fluid is compressed and enters the heat pump condenser to exchange heat with tap water and condense. Then, it is throttled by the heat pump flow regulating device and enters the coupled heat exchanger through the a and b ports of the first heating reversing valve to absorb the condensing heat expansion of the air conditioning. Finally, it enters the heat pump compressor through the a and b ports of the second heating reversing valve to complete the heat pump heating cycle. The tap water heated by the heat pump condenser enters the hot water storage tank for later use. The above process is repeated cyclically to achieve coupled heating of the system.

[0015] Compared with the prior art, the beneficial effects of this invention are: (1) The dual-condition heat exchanger provided by this invention can be used for air conditioning cooling and heating as well as hot water production, with multiple functions; the condensing air volume and spray water cooling air volume can be accurately controlled during cooling, which can improve the system operation effect; (2) The dual-condition heat exchanger and the cooling and heating system and method provided by this invention can improve the condensing efficiency and recover the evaporation cold energy of the heat pump under the cooling condition, thereby improving the condensing efficiency, achieving high-efficiency cooling, low cost, and easy installation; (3) The dual-condition heat exchanger and the cooling and heating system and method provided by this invention can partially recover the condensing waste heat of the air conditioner to produce hot water for storage and utilization, improve the comprehensive energy efficiency ratio, and solve the problem of complex control of total heat recovery and the lack of usable waste heat; (4) The dual-condition heat exchanger and the cooling and heating system and method provided by this invention, compared with the utilization of waste heat by absorption cooling, can save investment and land area, and reduce the burden of operation and management. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the system of the present invention.

[0017] In the diagram: 1. Demineralized water tank; 2. Second fan; 3. Atomizing spray device; 4. First fan; 5. Heat pump evaporator; 6. Air outlet; 7. Air conditioning evaporator; 8. Four-way valve; 9. First heating reversing valve; 10. Heat pump throttling device; 11. Hot water storage tank; 12. Circulating pump; 13. Air conditioning condenser; 14. Packing layer; 15. Demister; 16. Water collection tank; 17. Air conditioning flow regulating device; 18. Air conditioning compressor; 19. Coupling heat exchanger; 20. Second heating reversing valve; 21. Heat pump compressor; 22. Heat pump condenser. Detailed Implementation

[0018] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the embodiments described. Example

[0019] like Figure 1As shown, the dual-condition heat exchanger of the present invention includes: a first fan 4, an atomizing spray device 3, an air conditioning condenser 13, a packing layer 14, a second fan 2, a demister 15, an air outlet 6, a circulating pump 12, and a water collection tank 16; the first fan 4 is located above one side of the dual-condition heat exchanger; the atomizing spray device 3 is located below the first fan 4 and above the air conditioning condenser 13; the air conditioning condenser 13 is located above the packing layer 14; the packing layer 14 is located above the water collection tank 16; the second fan 2 is located on one side of the packing layer 14; the demister 15 is located above the water collection tank 16 and below the air outlet 6 on the other side of the air conditioning condenser 13; the air outlet 6 is located above the other side of the first fan 4; the inlet and outlet of the circulating pump 12 are respectively connected to the outlet of the water collection tank 16 and the inlet of the atomizing spray device 3; both the air conditioning condenser 12 and the heat pump evaporator 4 are finned heat exchangers.

[0020] The dual-condition heat exchanger of the present invention further includes: a heat pump evaporator 5; the heat pump evaporator 5 is located above the demister 15 and below the air outlet 6.

[0021] The dual-condition heat exchanger of the present invention further includes: a demineralized water tank 1; the demineralized water tank 1 is connected to the inlet of the circulating pump 12 via a pipeline.

[0022] The air conditioning system of the present invention, including a dual-condition heat exchanger, further includes: an air conditioning compressor 18, a coupling heat exchanger 19, a four-way valve 8, an air conditioning evaporator 7, and an air conditioning flow regulating device 17; the exhaust port of the air conditioning compressor 18 is connected to the air conditioning side inlet of the coupling heat exchanger 19 via a pipe; the air conditioning side outlet of the coupling heat exchanger 19 is connected to the a port of the four-way valve 8 via a pipe; the b port of the four-way valve 8 is connected to the inlet of the air conditioning condenser 13 of the dual-condition heat exchanger via a pipe; the inlet of the air conditioning flow regulating device 17 is connected to the outlet of the air conditioning condenser 13 of the dual-condition heat exchanger via a pipe, and the outlet is connected to the inlet of the air conditioning evaporator 7 via a pipe; the outlet of the air conditioning evaporator 7 is connected to the d port of the four-way valve 8 via a pipe; and the c port of the four-way valve 8 is connected to the air inlet of the air conditioning compressor 18 via a pipe.

[0023] The heat pump system of the present invention, including a dual-condition heat exchanger, further includes: a heat pump compressor 21, a heat pump condenser 22, a heat pump throttling device 10, a first heating reversing valve 9, and a second heating reversing valve 20; the exhaust port of the heat pump compressor 21 is connected to the inlet of the heat pump condenser 22 via a pipe; the outlet of the heat pump condenser 22 is connected to the inlet of the heat pump throttling device 10 via a pipe; the outlet of the heat pump throttling device 10 is connected to the a port of the first heating reversing valve 9 via a pipe; the b port of the first heating reversing valve 9 is connected to the inlet of the heat pump side of the air conditioning system coupling heat exchanger 19 via a pipe, and the c port is connected to the inlet of the heat pump evaporator 5 of the dual-condition heat exchanger via a pipe; the a port of the second heating reversing valve 20 is connected to the outlet of the heat pump side of the air conditioning system coupling heat exchanger 19 via a pipe, the c port is connected to the outlet of the heat pump evaporator 5 of the dual-condition heat exchanger via a pipe, and the b port is connected to the air inlet of the heat pump compressor 21 via a pipe.

[0024] The heat pump system of the present invention, which includes a dual-condition heat exchanger, further includes: a hot water storage tank 11; the hot water storage tank 11 is connected to the heat pump condenser 22 of the heat pump system via a pipe.

[0025] The specific implementation steps of the air conditioning refrigeration method of the present invention are as follows: An appropriate amount of demineralized water is injected into the water collection tank 16; the air conditioning compressor 18, the first fan 4, the second fan 2, and the circulation pump 12 are started; the air conditioning working fluid enters the air conditioning condenser 13 through the air conditioning side inlet and outlet of the coupling heat exchanger 19 and the a and b interfaces of the four-way valve 8, where it condenses and releases heat; the air drawn by the first fan 4 and the droplets sprayed by the atomizing spray device 3 driven by the circulation pump 12 cooperate with the air conditioning condenser 13 to exchange heat; the condensed working fluid expands and absorbs heat in the air conditioning evaporator 7 after being throttled by the air conditioning flow regulating device 17, and then enters the air conditioning compressor 18 through the d and c interfaces of the four-way valve 8 to complete the air conditioning refrigeration cycle; the sprayed water after exchanging heat with the air conditioning condenser 13 falls into the packing layer 14, where it exchanges heat and mass with the external air drawn in by the second fan 2, and then falls into the water collection tank 16; the heated air passes through the demister 15 to capture droplets and then passes through the heat pump evaporator 5 and is discharged through the air outlet 6; the above process is repeated cyclically to achieve the air conditioning refrigeration operation of the system.

[0026] The specific implementation steps of the combined cooling and heating method of the present invention are as follows: An appropriate amount of demineralized water is injected into the water collection tank 16; the air conditioning compressor 18, the first fan 4, the second fan 2, and the circulation pump 12 are started; the air conditioning working fluid enters the air conditioning condenser 13 through the air conditioning side inlet and outlet of the coupling heat exchanger 19 and the a and b ports of the four-way valve 8, where it condenses and releases heat; the air drawn by the first fan 4 and the droplets sprayed by the atomizing spray device 3 driven by the circulation pump 12 cooperate with the air conditioning condenser 13 to exchange heat; the condensed working fluid expands and absorbs heat in the air conditioning evaporator 7 after being throttled by the air conditioning flow regulating device 17, and then enters the air conditioning compressor 18 through the d and c ports of the four-way valve 8 to complete the air conditioning refrigeration cycle; the sprayed water after exchanging heat with the air conditioning condenser 13 falls into the packing material. Layer 14 exchanges heat and mass with the external air drawn in by the second fan 2, and then falls into the water collection tank 16; the heated air passes through the demister 15 to capture droplets and then passes through the heat pump evaporator 5 and is discharged through the air outlet 6; the heat pump compressor 21 is started, the heat pump working fluid is compressed and enters the heat pump condenser 22 to exchange heat and condense with the tap water, and then passes through the heat pump throttling device 10 to throttle, and enters the coupling heat exchanger 19 through the a and b interfaces of the first heating reversing valve 9 to absorb the thermal expansion of the air conditioner condensation, and then enters the heat pump compressor 21 through the a and b interfaces of the second heating reversing valve 20 to complete the heat pump heating cycle; the tap water heated by the heat pump condenser 22 enters the hot water storage tank 11 for storage and use; the above process is repeated to realize the combined cooling and heating of the system.

[0027] The specific implementation steps of the single-system hot water method of the present invention are as follows: the first fan 4, the second fan 2, and the heat pump compressor 21 are started. The heat pump working fluid is compressed and enters the heat pump condenser 22 to exchange heat with the tap water and condense. Then, it is throttled by the heat pump throttling device 10 and enters the heat pump evaporator 5 through the a and c ports of the first heating reversing valve 9 to evaporate and absorb heat. Then, it enters the heat pump compressor 21 through the c and b ports of the second heating reversing valve 20 to complete the heat pump single-system hot water cycle. The tap water heated by the heat pump condenser 22 enters the hot water storage tank 11 for storage and use. The above process is repeated to realize the single-system hot water operation of the system.

[0028] The specific implementation steps of the combined heating method of the present invention are as follows: The air conditioning compressor 18, the first fan 4, and the second fan 2 are started. The air conditioning working fluid enters the air conditioning evaporator 7 through the air conditioning side inlet and outlet of the coupling heat exchanger 19 and the a and d interfaces of the four-way valve 8, where it condenses and releases heat. After condensation, the working fluid is throttled by the air conditioning flow regulating device 17 and expands and absorbs heat in the air conditioning condenser 13, then enters the air conditioning compressor 18 through the b and c interfaces of the four-way valve 8 to complete the air conditioning heating cycle. The air drawn in by the first fan 4 exchanges heat with the air conditioning condenser 13 and then mixes with the external air drawn in by the second fan 2, passing through the demister. 15; Start the heat pump compressor 21. The heat pump working fluid is compressed and enters the heat pump condenser 22 to exchange heat with the tap water and condense. Then, it is throttled by the heat pump throttling device 10 and enters the heat pump evaporator 5 through the a and c ports of the first heating reversing valve 9 to evaporate and absorb heat. Then, it enters the heat pump compressor 21 through the c and b ports of the second heating reversing valve 20 to complete the heat pump hot water cycle. The tap water heated by the heat pump condenser 22 enters the hot water storage tank 11 for storage and use. The air passing through the demister 15 exchanges heat with the heat pump evaporator 5 and is discharged through the air outlet 6. The above process is repeated to realize the combined heating operation of the system.

[0029] The specific implementation steps of the coupling heating method of the present invention are as follows: The air conditioning compressor 18 and the first fan 4 are started. The air conditioning working fluid enters the air conditioning evaporator 7 through the air conditioning side inlet and outlet of the coupling heat exchanger 19 and the a and d interfaces of the four-way valve 8, where it condenses and releases heat. After condensation, the working fluid is throttled by the air conditioning flow regulating device 17 and expands and absorbs heat in the air conditioning condenser 13, then enters the air conditioning compressor 18 through the b and c interfaces of the four-way valve 8 to complete the air conditioning heating cycle. The air drawn in by the first fan 4 exchanges heat with the air conditioning condenser 13 and then mixes with the external air drawn in by the second fan 2, passing through a filter... The mist generator 15 and the heat pump evaporator 5 are discharged through the air outlet 6; the heat pump compressor 21 is started, the heat pump working fluid is compressed and enters the heat pump condenser 22 to exchange heat with the tap water and condense, then it is throttled by the heat pump throttling device 10, and enters the coupling heat exchanger 19 through the a and b ports of the first heating reversing valve 9 to absorb the thermal expansion of the air conditioner condensation, and then enters the heat pump compressor 21 through the a and b ports of the second heating reversing valve 20 to complete the heat pump heating cycle; the tap water heated by the heat pump condenser 22 enters the hot water storage tank 11 for storage and use; the above process is repeated to realize the coupling heating of the system.

[0030] As described above, although the invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the invention itself. Various changes in form and detail may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A combined cooling and heating system, characterized in that: The system includes a dual-condition heat exchanger, comprising a first fan (4), an atomizing spray device (3), an air conditioning condenser (13), a packing layer (14), a second fan (2), a demister (15), an air outlet (6), a circulating pump (12), and a water collection tank (16). The first fan (4) is located above one side of the dual-condition heat exchanger. The atomizing spray device (3) is located below the first fan (4) and above the air conditioning condenser (13). The air conditioning condenser (13) is located... Above the packing layer (14); the packing layer (14) is located above the water collection tank (16); the second fan (2) is located on one side of the packing layer (14); the demister (15) is located above the water collection tank (16) and below the air outlet (6) on the other side of the air conditioning condenser (13); the air outlet (6) is located above the other side of the first fan (4); the inlet and outlet of the circulating pump (12) are respectively connected to the water outlet of the water collection tank (16) and the water inlet of the atomizing spray device (3); It also includes a heat pump evaporator (5); the heat pump evaporator (5) is located above the demister (15) and below the air outlet (6); It also includes an air conditioning compressor (18), a coupling heat exchanger (19), a four-way valve (8), an air conditioning evaporator (7), and an air conditioning flow regulating device (17); the exhaust port of the air conditioning compressor (18) is connected to the air conditioning side inlet of the coupling heat exchanger (19) through a pipe; the air conditioning side outlet of the coupling heat exchanger (19) is connected to the a port of the four-way valve (8) through a pipe; the b port of the four-way valve (8) is connected to the inlet of the air conditioning condenser (13) of the dual-condition heat exchanger through a pipe; the inlet of the air conditioning flow regulating device (17) is connected to the outlet of the air conditioning condenser (13) of the dual-condition heat exchanger through a pipe, and the outlet is connected to the inlet of the air conditioning evaporator (7) through a pipe; the outlet of the air conditioning evaporator (7) is connected to the d port of the four-way valve (8) through a pipe; and the c port of the four-way valve (8) is connected to the air inlet of the air conditioning compressor (18) through a pipe. It also includes a heat pump compressor (21), a heat pump condenser (22), a heat pump throttling device (10), a first heating reversing valve (9), and a second heating reversing valve (20); the exhaust port of the heat pump compressor (21) is connected to the inlet of the heat pump condenser (22) through a pipe; the outlet of the heat pump condenser (22) is connected to the inlet of the heat pump throttling device (10) through a pipe; the outlet of the heat pump throttling device (10) is connected to the a port of the first heating reversing valve (9) through a pipe; the b port of the first heating reversing valve (9) is connected to the inlet of the heat pump side of the air conditioning system coupling heat exchanger (19) through a pipe, and the c port is connected to the inlet of the heat pump evaporator (5) of the dual-condition heat exchanger through a pipe; the a port of the second heating reversing valve (20) is connected to the outlet of the heat pump side of the air conditioning system coupling heat exchanger (19) through a pipe, the c port is connected to the outlet of the heat pump evaporator (5) of the dual-condition heat exchanger through a pipe, and the b port is connected to the air inlet of the heat pump compressor (21) through a pipe.

2. The combined cooling and heating system according to claim 1, characterized in that: It also includes a demineralized water tank (1); the demineralized water tank (1) is connected to the inlet of the circulating pump (12) via a pipe.

3. The combined cooling and heating system according to claim 1, characterized in that: It also includes a hot water storage tank (11); the hot water storage tank (11) is connected to the heat pump condenser (22) of the heat pump system via a pipe.

4. An air conditioning refrigeration method based on the combined cooling and heating system according to any one of claims 1-3, characterized in that: Inject an appropriate amount of demineralized water into the water collection tank (16), start the air conditioning compressor (18), the first fan (4), the second fan (2) and the circulation pump (12). The air conditioning working fluid enters the air conditioning condenser (13) through the air conditioning side inlet and outlet of the coupling heat exchanger (19) and the a and b interfaces of the four-way valve (8) to condense and release heat. The air drawn by the first fan (4) and the liquid droplets sprayed by the atomizing spray device (3) driven by the circulation pump (12) cooperate with the air conditioning condenser (13) to exchange heat. After condensation, the working fluid expands and absorbs heat in the air conditioning evaporator (7) after being throttled by the air conditioning flow regulating device (17). Then, it enters the air conditioning compressor (18) through the d and c interfaces of the four-way valve (8) to complete the air conditioning refrigeration cycle. After exchanging heat with the air conditioner condenser (13), the spray water falls into the packing layer (14), and exchanges heat and mass with the external air drawn in by the second fan (2), and then falls into the water collection tank (16); the heated air passes through the demister (15) to capture the droplets and then passes through the heat pump evaporator (5) and is discharged through the air outlet (6); the above process is repeated to realize the air conditioning and refrigeration operation of the system.

5. A method for combined cooling and heating based on the combined cooling and heating system according to any one of claims 1-3, characterized in that: Inject an appropriate amount of demineralized water into the water collection tank (16), start the air conditioning compressor (18), the first fan (4), the second fan (2) and the circulation pump (12). The air conditioning working fluid enters the air conditioning condenser (13) through the air conditioning side inlet and outlet of the coupling heat exchanger (19) and the a and b interfaces of the four-way valve (8) to condense and release heat. The air drawn by the first fan (4) and the liquid droplets sprayed by the atomizing spray device (3) driven by the circulation pump (12) cooperate with the air conditioning condenser (13) to exchange heat. After condensation, the working fluid expands and absorbs heat in the air conditioning evaporator (7) after being throttled by the air conditioning flow regulating device (17). Then, it enters the air conditioning compressor (18) through the d and c interfaces of the four-way valve (8) to complete the air conditioning refrigeration cycle. After exchanging heat with the air conditioner condenser (13), the spray water falls into the packing layer (14), and exchanges heat and mass with the external air drawn in by the second fan (2), and then falls into the water collection tank (16); the heated air passes through the demister (15) to capture the droplets and then passes through the heat pump evaporator (5) and is discharged through the air outlet (6); the heat pump compressor (21) is started, the heat pump working fluid is compressed and enters the heat pump condenser (22) to exchange heat with the tap water and condense, and then passes through the heat pump throttling device (10) to enter the coupling heat exchanger (19) through the a and b interfaces of the first heating reversing valve (9) to absorb the thermal expansion of the air conditioner condensation, and then enters the heat pump compressor (21) through the a and b interfaces of the second heating reversing valve (20) to complete the heat pump heating cycle; the tap water heated by the heat pump condenser (22) enters the hot water storage tank (11) for storage and use; the above process is repeated to realize the combined cooling and heating of the system.

6. A method for producing hot water from a single source in a combined cooling and heating system according to any one of claims 1-3, characterized in that: Start the first fan (4), the second fan (2) and the heat pump compressor (21). The heat pump working fluid is compressed and enters the heat pump condenser (22) to exchange heat with the tap water and condense. Then, it is throttled by the heat pump throttling device (10) and enters the heat pump evaporator (5) through the a and c ports of the first heating reversing valve (9) to evaporate and absorb heat. Then, it enters the heat pump compressor (21) through the c and b ports of the second heating reversing valve (20) to complete the heat pump single-system hot water cycle. The tap water heated by the heat pump condenser (22) enters the hot water storage tank (11) for storage and use. The above process is repeated to realize the single-system hot water operation of the system.

7. A combined heating method based on the combined cooling and heating system according to any one of claims 1-3, characterized in that: Start the air conditioning compressor (18), the first fan (4), and the second fan (2). The working fluid of the air conditioner enters the air conditioning evaporator (7) through the air conditioning side inlet and outlet of the coupling heat exchanger (19) and the a and d interfaces of the four-way valve (8) to condense and release heat. After condensation, the working fluid is throttled by the air conditioning flow regulating device (17) and expands and absorbs heat in the air conditioning condenser (13) to cool down. Then it enters the air conditioning compressor (18) through the b and c interfaces of the four-way valve (8) to complete the air conditioning heating cycle. The air drawn in by the first fan (4) exchanges heat with the air conditioning condenser (13) and then mixes with the outside air drawn in by the second fan (2) and passes through the demister (15). Start the heat pump. The working fluid of the heat pump is compressed by the compressor (21) and enters the heat pump condenser (22) to exchange heat with the tap water and condense. Then, it is throttled by the heat pump throttling device (10) and enters the heat pump evaporator (5) through the a and c interfaces of the first heating reversing valve (9) to evaporate and absorb heat. Then, it enters the heat pump compressor (21) through the c and b interfaces of the second heating reversing valve (20) to complete the heat pump hot water cycle. The tap water heated by the heat pump condenser (22) enters the hot water storage tank (11) for storage and use. The air passing through the demister (15) exchanges heat with the heat pump evaporator (5) and is discharged through the air outlet (6). The above process is repeated to realize the combined heating operation of the system.

8. A coupled heating method based on the combined cooling and heating system according to any one of claims 1-3, characterized in that: The air conditioning compressor (18) and the first fan (4) are started. The air conditioning working fluid enters the air conditioning evaporator (7) through the air conditioning side inlet and outlet of the coupling heat exchanger (19) and the a and d interfaces of the four-way valve (8) to condense and release heat. After condensation, the working fluid is throttled by the air conditioning flow regulating device (17) and expands and absorbs heat in the air conditioning condenser (13) to cool down. Then it enters the air conditioning compressor (18) through the b and c interfaces of the four-way valve (8) to complete the air conditioning heating cycle. The air drawn in by the first fan (4) exchanges heat with the air conditioning condenser (13) and mixes with the external air drawn in by the second fan (2). After passing through the demister (15) and the heat pump evaporator (5), it is discharged through the air outlet (6). When the heat pump compressor (21) is started, the heat pump working fluid is compressed and enters the heat pump condenser (22) to exchange heat with the tap water and condense. Then, it is throttled by the heat pump throttling device (10) and enters the coupling heat exchanger (19) through the a and b interfaces of the first heating reversing valve (9) to absorb the thermal expansion of the air conditioner condensation. Then, it enters the heat pump compressor (21) through the a and b interfaces of the second heating reversing valve (20) to complete the heat pump heating cycle. Tap water heated by the heat pump condenser (22) enters the hot water storage tank (11) for storage and use; the above process is repeated to realize the coupled heating of the system.

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