Heat pump unit with plate-jacket condenser

Abstract

The utility model discloses a heat pump unit with a plate-jacket condenser, comprising a heat pump system, a spray system, an exhaust fan and a shell, and is characterized in that the heat pump system comprises a plate-jacket condenser, an evaporator, a compressor, a throttle and a four-way reversing valve, the spray system comprises a circulating water pump, a nozzle, a pipeline and a water collecting tank, the heat pump system, the spray system and the exhaust fan are assembled in the shell to form an integral heat pump unit, the plate-jacket condenser includes a flat plate inner-jacket type, an inner-tube type and a micro-channel type heat exchanger, and the heat pump unit adopts cooling methods such as air cooling, water cooling, evaporative cooling, a combination of air cooling and water cooling, and a combination of water cooling and evaporative cooling. The unit comprehensively utilizes the cold and heat sources of air, tap water, waste water and natural water bodies, and has a compact structure, a small volume, a high heat exchange efficiency and a remarkable energy-saving effect.

Description

Technical Field

[0001] The utility model belongs to the field of air conditioning and refrigeration, and in particular relates to a heat pump unit with a plate-jacketed condenser. Background Art

[0002] There are three cooling methods for existing compression refrigeration cycle condensers: air cooling, water cooling, and evaporative cooling. Each cold source usually corresponds to a condenser. When there are multiple cold sources in real scenarios, such as air, exhaust gas, wastewater, surface water, groundwater, etc., multiple condensers must be set up to comprehensively utilize these cold sources, resulting in numerous equipment and complex systems, and the heat pump unit is relatively large in size. Summary of the invention

[0003] The utility model aims to provide a heat pump unit with a plate-jacket condenser which can comprehensively utilize various cold sources and has a compact structure and a small volume.

[0004] The solution of the utility model is: a heat pump unit with a plate-jacket condenser, which includes a heat pump system, a spray system, an exhaust fan, and a shell. The heat pump system includes a plate-jacket condenser, an evaporator, a compressor, a throttle, and a four-way reversing valve. The plate-jacket condenser includes a flat outer jacket, a flat inner jacket or an inner tube. The flat outer jacket is a closed planar shell through which refrigerant passes. The flat inner jacket is a closed planar shell. The inner tube is a serpentine tube or a spiral tube. The flat inner jacket or the inner tube passes cooling water and is connected to a spray system or an external cold source, or the flat outer jacket passes cooling water. The cooling water is connected to the spray system or external cold source. The flat inner sleeve or inner tube passes the refrigerant. The flat inner sleeve or inner tube is installed in the flat outer sleeve. Its pipeline passes through the shell of the flat outer sleeve. Its cooling water pipe is directly or indirectly connected to the spray system or external cold source. The flat outer sleeve, flat inner sleeve or inner tube is a flat shell or has a rib wall to enhance heat exchange. In the plate-and-jacket condenser, the refrigerant and the cooling water flow in the opposite direction. The multi-row plate-and-jacket condenser is installed vertically or horizontally in the shell. Its inlet and outlet are connected to the water distribution tank and the liquid distribution tank. The evaporator is a water-cooled evaporator or an air-cooled evaporator. The spray system includes a circulating water pump, a nozzle, a pipeline, a filter, a water supply pipe, and a water collection tank. Its pipeline is connected to the plate-and-jacket condenser or other cold sources. The exhaust fan is installed at the air outlet of the shell, and the pipes and nozzles of the spray system are arranged below. A plate-and-jacket condenser is arranged below the nozzle, and cooling water is sprayed on the plate-and-jacket condenser. Below the plate-and-jacket condenser is a sump of the spray system for collecting cooling water. An evaporator, a compressor, a throttle, a four-way reversing valve, a circulating water pump and other auxiliary equipment are installed below the sump. The side of the plate-and-jacket condenser is an outer shell, and the shell between the lower part and the upper part of the sump has an air inlet. The heat pump system, the spray system and the exhaust fan are assembled in the shell to form an integral heat pump unit with a plate-and-jacket condenser.

[0005] During summer cooling, the plate-and-jacket condenser uses cooling methods such as air cooling, water cooling, evaporative cooling, a combination of air cooling and water cooling, and a combination of water cooling and evaporative cooling.

[0006] When air cooling is used, the high-temperature and high-pressure gaseous refrigerant discharged from the compressor enters the flat jacket of the plate-jacket condenser through the four-way reversing valve. The exhaust fan exhausts air and draws cold air in from the bottom of the plate-jacket condenser to cool the outer shell of the plate-jacket condenser. The condensation heat of the refrigerant is absorbed by the cold air and discharged into the atmosphere by the exhaust fan. The high-temperature and high-pressure gaseous refrigerant is cooled into high-pressure liquid refrigerant, and then expands and throttles through the throttle to become low-temperature and low-pressure liquid refrigerant. It evaporates and absorbs heat in the evaporator to provide refrigerant for the air-conditioning terminal. The refrigerant becomes a low-pressure gaseous refrigerant and finally returns to the compressor, completing a refrigeration cycle.

[0007] When water cooling is used, the high-temperature and high-pressure gaseous refrigerant discharged from the compressor enters the flat jacket of the plate-jacket condenser through the four-way reversing valve, and the external cooling water enters the flat inner jacket or inner tube of the plate-jacket condenser, exchanges heat with the high-temperature and high-pressure gaseous refrigerant in the flat jacket, is cooled by the refrigerant into high-pressure liquid refrigerant, and the condensation heat is carried to the external water body by the cooling water.

[0008] When evaporative cooling is used, the high-temperature and high-pressure gaseous refrigerant discharged from the compressor enters the flat jacket of the plate-jacket condenser through the four-way reversing valve. The circulating water pump of the spray system circulates, and spray water is sprayed from the nozzle and sprayed on the surface of the flat jacket of the plate-jacket condenser. The exhaust fan exhausts air, and the air passes over the surface of the flat jacket. The spray water on it evaporates and cools down. The spray water exchanges heat with the high-temperature refrigerant through the plate wall, and the condensation heat is carried away by the humid air and discharged into the atmosphere.

[0009] When a combination of air cooling and water cooling is used, the high-temperature and high-pressure gaseous refrigerant discharged from the compressor enters the flat jacket of the plate-jacket condenser through the four-way reversing valve. The exhaust fan exhausts air and draws cold air in from the bottom of the plate-jacket condenser to cool the outer shell of the plate-jacket condenser. At the same time, external cooling water enters the flat inner jacket or inner tube of the plate-jacket condenser to exchange heat with the high-temperature and high-pressure gaseous refrigerant in the flat jacket. Through the joint cooling of air cooling and water cooling, the high-temperature and high-pressure gaseous refrigerant is cooled into high-pressure liquid refrigerant, and the condensation heat is discharged into the atmosphere and the external water body.

[0010] When a combination of water cooling and evaporative cooling is used, the high-temperature and high-pressure gaseous refrigerant discharged from the compressor enters the flat jacket of the plate-jacket condenser through the four-way reversing valve, and the external cooling water enters the flat inner jacket or inner tube of the plate-jacket condenser to exchange heat with the high-temperature and high-pressure gaseous refrigerant in the flat jacket. At the same time, the circulating water pump of the spray system circulates, and spray water is sprayed from the nozzle and sprayed on the surface of the flat jacket of the plate-jacket condenser. The exhaust fan exhausts air, and the air passes over the surface of the flat jacket. The spray water on it evaporates and cools down. The spray water exchanges heat with the high-temperature refrigerant through the plate wall, and the condensation heat is taken away by the wet air. Through the joint cooling of water cooling and evaporative cooling, the high-temperature and high-pressure gaseous refrigerant is cooled into high-pressure liquid refrigerant, and the condensation heat is discharged into the atmosphere and the external water body.

[0011] When heating in winter, the heat pump system is converted into a heating cycle, the plate-jacket condenser is converted into an evaporator, and the original evaporator is converted into a condenser. The plate-jacket condenser adopts heating methods such as air cooling, water cooling, evaporative cooling, a combination of air cooling and water cooling, and a combination of water cooling and evaporative cooling.

[0012] When air cooling is used, the high-temperature and high-pressure gaseous refrigerant discharged from the compressor enters the evaporator through the four-way reversing valve. The condensation heat of the refrigerant heats the air-conditioning water and becomes a high-pressure liquid refrigerant. It then expands and throttles through the throttle and becomes a low-temperature and low-pressure liquid refrigerant. It enters the flat jacket of the plate-and-jacket condenser. The exhaust fan exhausts air and draws air in from the bottom of the plate-and-jacket condenser. The refrigerant evaporates and absorbs heat through the plate wall and the air, becoming a low-pressure gaseous refrigerant. Finally, it returns to the compressor, completing a heating cycle.

[0013] When water cooling is used, the high-temperature and high-pressure gaseous refrigerant discharged from the compressor enters the evaporator through the four-way reversing valve. The condensation heat of the refrigerant heats the air-conditioning water, and the refrigerant becomes a high-pressure liquid refrigerant. It then expands and throttles through the throttle and becomes a low-temperature and low-pressure liquid refrigerant. It enters the flat outer jacket of the plate-and-jacket condenser. The external heat source water enters the flat inner jacket or inner tube of the plate-and-jacket condenser. The refrigerant exchanges heat with the external heat source water through the plate wall and evaporates and absorbs heat, becoming a low-pressure gaseous refrigerant. Finally, it returns to the compressor, completing a heating cycle.

[0014] When evaporative cooling is used, the high-temperature and high-pressure gaseous refrigerant discharged from the compressor enters the evaporator through the four-way reversing valve. The condensation heat of the refrigerant heats the air-conditioning water and becomes a high-pressure liquid refrigerant. It then expands and throttles through the throttle and becomes a low-temperature and low-pressure liquid refrigerant. It enters the flat jacket of the plate-jacket condenser. The circulating water pump of the spray system circulates, and the spray water is sprayed from the nozzle and sprayed on the surface of the flat jacket of the plate-jacket condenser. The exhaust fan exhausts air, and the air passes over the surface of the flat jacket, exchanges heat with the spray water on it and is cooled and cooled. The water vapor condenses, and the refrigerant exchanges heat with the spray water through the plate wall, evaporates and absorbs heat, and becomes a low-pressure gaseous refrigerant. Finally, it returns to the compressor, completing a heating cycle.

[0015] When a combination of air cooling and water cooling is used for heating, the high-temperature and high-pressure gaseous refrigerant discharged from the compressor enters the evaporator through the four-way reversing valve. The condensation heat of the refrigerant heats the air-conditioning water and becomes a high-pressure liquid refrigerant. It then expands and throttles through the throttle and becomes a low-temperature and low-pressure liquid refrigerant. It enters the flat jacket of the plate-jacket condenser. The exhaust fan exhausts air and draws air in from the bottom of the plate-jacket condenser. The refrigerant evaporates and absorbs heat through the heat exchange with the air through the plate wall. At the same time, water from the external heat source enters the flat inner jacket or inner tube of the plate-jacket condenser and exchanges heat with the low-temperature and low-pressure liquid refrigerant in the flat jacket. Through the joint heating of air cooling and water cooling, the low-temperature and low-pressure liquid refrigerant becomes a low-pressure gaseous refrigerant and finally returns to the compressor, completing a heating cycle.

[0016] When a combination of water cooling and evaporative cooling is used for heating, the high-temperature and high-pressure gaseous refrigerant discharged from the compressor enters the evaporator through the four-way reversing valve. The refrigerant condenses and heats the air-conditioning water, becoming high-pressure liquid refrigerant. It then expands and throttles through the throttle and becomes low-temperature and low-pressure liquid refrigerant, entering the flat jacket of the plate-jacket condenser. The external heat source water enters the flat inner jacket or inner tube of the plate-jacket condenser. The refrigerant exchanges heat with the external heat source water through the plate wall and evaporates and absorbs heat. At the same time, the circulating water pump of the spray system circulates, and spray water is sprayed from the nozzle and sprayed on the surface of the flat jacket of the plate-jacket condenser. The exhaust fan exhausts air, and the air passes over the surface of the flat jacket, exchanges heat with the spray water on it and is cooled and cooled. The water vapor condenses, and the refrigerant exchanges heat with the spray water through the plate wall, evaporates and absorbs heat. Through the combined heating of water cooling and evaporative cooling, the low-temperature and low-pressure liquid refrigerant becomes low-pressure gaseous refrigerant, and finally returns to the compressor, completing a heating cycle.

[0017] The operation mode in transition seasons can refer to the operation mode in summer and winter. Through the above method, only plate-and-jacket condensers are used, and various cold and heat sources are comprehensively and effectively utilized. The structure is compact, the volume is small, the heat exchange efficiency is high, and the energy-saving effect is significant. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a system of heat pump unit with plate-jacket condenser Figure 1

[0019] Figure 2 It is a heat pump unit with a plate-jacket condenser. Figure 1

[0020] Figure 3 It is a heat pump unit with a plate-jacket condenser. Figure 2

[0021] Figure 4 It is a plate-and-jacket condenser structure. Figure 1

[0022] Figure 5It is a plate-and-jacket condenser structure. Figure 2

[0023] Figure 6 It is a plate-and-jacket condenser structure. Figure 3

[0024] Figure 7 It is a plate-and-jacket condenser structure. Figure 4

[0025] Figure 8 It is a plate-and-jacket condenser structure. Figure 5

[0026] Fig. 9 It is a plate-and-jacket condenser structure. Figure 6

[0027] Fig.10 It is a plate-and-jacket condenser structure. Figure 7

[0028] Fig.11 It is a plate-and-jacket condenser structure. Figure 8

[0029] Fig.12 It is a plate-and-jacket condenser structure. Figure 9

[0030] Fig.13 It is a heat pump unit with a plate-jacket condenser. Figure 3

[0031] Fig.14 It is a system of heat pump unit with plate-jacket condenser Figure 2

[0032] Fig.15 It is a heat pump unit with a plate-jacket condenser. Figure 4

[0033] Fig.16 It is a system of heat pump unit with plate-jacket condenser Figure 3

[0034] Description of reference numerals:

[0035] 1. compressor, 2. four-way reversing valve, 3. 46, 47, plate-type condenser, 4. evaporator, 5. 54, throttle, 6. liquid indicator, 7. dry filter, 8. liquid storage, 9. gas-liquid separator, 10. 11. 12. 13. check valve, 14. water collection tank, 15. circulating water pump, 16. nozzle, 17. exhaust fan, 18. 19. 20. 21. 22. 23. 24. 28. 48. 49. valve, 25. water collector, 26. water distributor, 27. Refrigerant pipe, 29, air inlet, 30, 44, water spraying duct, 31, flat outer sleeve, 32, flat inner sleeve, 33, cooling water inlet pipe, 34, cooling water outlet pipe, 35, refrigerant inlet pipe, 36, refrigerant outlet pipe, 37, 38, welding edge, 39, support, 40, inner pipe, 41, microchannel, 42, air distribution chamber, 43, liquid collecting chamber, 45, water spraying plate, 50, 51, 53, solenoid valve, 52, heat exchange duct, 55, hot water coil, 56, air conditioning water coil. DETAILED DESCRIPTION

[0036] Figure 1 , 2, 3, 4, 5, 6, a heat pump unit with a plate-jacket condenser comprises a heat pump system, a spray system, an exhaust fan 17, and a shell, wherein the heat pump system comprises a plate-jacket condenser 3, an evaporator 4, a compressor 1, a throttle 5, and a four-way reversing valve 2, the plate-jacket condenser 3 comprises a flat outer jacket 31, a flat inner jacket 32 ​​or an inner tube 40, the flat outer jacket 31 is a closed planar shell through which refrigerant passes, the flat inner jacket 32 ​​is a closed planar shell, the inner tube 40 is a serpentine tube or a spiral tube, the flat inner jacket 32 ​​or the inner tube 40 passes cooling water and is connected to a spray system or other cold source, or the flat outer jacket 31 passes cooling water and is connected to a spray system or other cold source, the flat inner jacket 32 ​​passes cooling water and is connected to a spray system or other cold source, 2 or inner tube 40 passes refrigerant, the flat inner jacket 32 ​​or inner tube 40 is installed in the flat outer jacket 31 and fixed therein by the support 39. Its pipeline passes through the shell of the flat outer jacket 31. The cooling water is directly or indirectly connected to the spray system or the external cold source through valves 19 and 21. The external cold source includes various waste water, surface water, groundwater, etc. When the cooling water is a clean and non-corrosive water body, it can be directly connected to the sleeve condenser 3, such as water from a fire water tank. If it is a turbid and corrosive water body, such as sewage or seawater, it should be indirectly connected through a heat exchanger. When an indirect connection is adopted, antifreeze and anti-scaling agent can be added in the pipe to prevent the inner pipe from freezing and scaling. The spray cooling water should be filtered by a filter. The flat outer shell 31 and the flat inner shell 32 are flat shells or ribs with enhanced heat exchange, which are square or rectangular. In the plate-jacket condenser 3, the refrigerant and the cooling water flow in opposite directions. Multiple plate-jacket condensers 3 are vertically installed in the shell, and their inlet and outlet are connected to the water collector 25, the water distributor 26, and the liquid collecting and distributing box. The evaporator 4 is a water-cooled evaporator or an air-cooled evaporator. The evaporator 4 in the figure is a water-cooled evaporator, which provides hot and cold water for the air-conditioning system. The air-cooled evaporator is used for the surface cooler of the air-conditioning unit to directly process the air. The spray system includes a circulating water pump 15, a nozzle 16, a pipeline, a filter, a water supply pipe, and a water collecting tank 14, and its pipeline is connected to the plate-jacket condenser 3 or other cold sources. An exhaust fan 17 is installed at the air outlet of the shell, and pipes and nozzles 16 of the spray system are arranged below. A plate-jacketed condenser 3 is arranged below the nozzle 16, and cooling water is sprayed on the plate-jacketed condenser 3. Below the plate-jacketed condenser 3 is a water collecting tank 14 of the spray system for collecting cooling water. An evaporator 4, a compressor 1, a throttle 5, a four-way reversing valve 2, a circulating water pump 15 and other auxiliary equipment are installed below the water collecting tank 14. The side of the plate-jacketed condenser 3 is an outer shell, and an air inlet 29 is provided in the shell between the lower part thereof and the upper part of the water collecting tank 14. The heat pump system, the spray system, and the exhaust fan 17 are assembled in the shell to form a heat pump unit with a plate-jacketed condenser.

[0037] The one-way valves 10, 11, 12, and 13 in the figure control the flow direction of the refrigerant, but are not limited thereto. The flow direction of the refrigerant can also be controlled by solenoid valves, four-way reversing valves, and the like. The flat outer sleeve 31 and the flat inner sleeve 32 are made of metal plates by welding, crimping, brazing, and other processes. When the flat outer sleeve 31 passes cooling water, it can be made into a detachable outer sleeve, which can be disassembled when cleaning and descaling are required. A water spraying plate can be placed in the water spraying duct 30 between the plate-jacket condensers 3 to enhance the heat exchange of the spray water. When valves 18 and 22 are opened, the spray water can enter the plate-jacket condenser 3 to exchange heat with the refrigerant, and then be sprayed out from the nozzle 16 to discharge heat or absorb heat into the air. When valves 19 and 21 are opened, external cooling water enters the plate-jacket condenser 3 to exchange heat with the refrigerant, and the refrigerant discharges heat or absorbs heat from the external cooling water. Open valves 23 and 24, and external cooling water enters the spray system and sprays onto the surface of the plate-jacket condenser 3 to exchange heat with the refrigerant. The refrigerant discharges or absorbs heat into the external cooling water and air.

[0038] During summer cooling, the plate-and-jacket condenser 3 adopts cooling methods such as air cooling, water cooling, evaporative cooling, a combination of air cooling and water cooling, and a combination of water cooling and evaporative cooling.

[0039] When air cooling is adopted, the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 1 enters the flat jacket 31 of the plate-jacket condenser 3 through the four-way reversing valve 2, and the exhaust fan 17 exhausts air, draws cold air from the lower part of the plate-jacket condenser 3, cools the outer shell of the plate-jacket condenser 3, and the condensation heat of the refrigerant is absorbed by the cold air and discharged into the atmosphere by the exhaust fan 17. The high-temperature and high-pressure gaseous refrigerant is cooled into a high-pressure liquid refrigerant, and then expands and throttles through the throttle 5 to become a low-temperature and low-pressure liquid refrigerant, evaporates and absorbs heat in the evaporator 4, and provides refrigerant for the air-conditioning terminal. The refrigerant becomes a low-pressure gaseous refrigerant and finally returns to the compressor 1, completing a refrigeration cycle. The refrigerant circulation process is: compressor 1→four-way reversing valve 2→plate-jacket condenser 3→check valve 13→liquid storage tank 8→drying filter 7→liquid indicator mirror 6→throttle 5→check valve 10→evaporator 4→four-way reversing valve 2→gas-liquid separator 9→compressor 1.

[0040] When water cooling is used, the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 1 enters the flat jacket 31 of the plate-jacket condenser 3 through the four-way reversing valve 2, and the external cooling water enters the flat inner jacket 32 ​​or the inner tube 40 of the plate-jacket condenser 3, exchanges heat with the high-temperature and high-pressure gaseous refrigerant in the flat jacket 31, and is cooled by the refrigerant into a high-pressure liquid refrigerant. The condensation heat is carried to the external water body by the cooling water, and the refrigerant is cooled into a high-pressure liquid refrigerant, and then expands and throttles through the throttle 5 to become a low-temperature and low-pressure liquid refrigerant, evaporates and absorbs heat in the evaporator 4, and provides refrigerant for the air-conditioning terminal. The refrigerant becomes a low-pressure gaseous refrigerant and finally returns to the compressor 1, completing a refrigeration cycle. The refrigerant cycle process is the same as above.

[0041] When evaporative cooling is adopted, the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 1 enters the flat jacket 31 of the plate-jacket condenser 3 through the four-way reversing valve 2, and the circulating water pump 15 of the spray system circulates, and the spray water is sprayed from the nozzle 16 and sprayed on the surface of the flat jacket 31 of the plate-jacket condenser 3. The exhaust fan 17 exhausts air, and the air passes over the surface of the flat jacket 31, and the spray water thereon evaporates and cools down. The spray water exchanges heat with the high-temperature refrigerant through the plate wall, and the condensation heat is taken away by the wet air and discharged into the atmosphere. The refrigerant is cooled into a high-pressure liquid refrigerant, and then expands and throttles through the throttle 5 to become a low-temperature and low-pressure liquid refrigerant. It evaporates and absorbs heat in the evaporator 4 to provide refrigerant for the air-conditioning terminal. The refrigerant becomes a low-pressure gaseous refrigerant and finally returns to the compressor 1, completing a refrigeration cycle. The refrigerant circulation process is the same as above.

[0042] When a combination of air cooling and water cooling is used, the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 1 enters the flat jacket 31 of the plate-jacket condenser 3 through the four-way reversing valve 2, and the exhaust fan 17 exhausts air, draws cold air in from the lower part of the plate-jacket condenser 3, cools the outer shell of the plate-jacket condenser 3, and at the same time, external cooling water enters the flat inner jacket 32 ​​or inner tube 40 of the plate-jacket condenser 3, and exchanges heat with the high-temperature and high-pressure gaseous refrigerant in the flat jacket 31. Through the combined cooling of air cooling and water cooling, the high-temperature and high-pressure gaseous refrigerant is cooled into a high-pressure liquid refrigerant, and the condensation heat is discharged into the atmosphere and the external water body. The refrigerant is cooled into a high-pressure liquid refrigerant, and then expands and throttles through the throttle 5 to become a low-temperature and low-pressure liquid refrigerant. It evaporates and absorbs heat in the evaporator 4 to provide refrigerant for the air-conditioning terminal. The refrigerant becomes a low-pressure gaseous refrigerant and finally returns to the compressor 1, completing a refrigeration cycle. The refrigerant cycle process is the same as above.

[0043] When a combination of water cooling and evaporative cooling is used, the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 1 enters the flat jacket 31 of the plate-jacket condenser 3 through the four-way reversing valve 2, and the external cooling water enters the flat inner jacket 32 ​​or inner tube 40 of the plate-jacket condenser 3 to exchange heat with the high-temperature and high-pressure gaseous refrigerant in the flat jacket 31. At the same time, the circulating water pump 15 of the spray system circulates, and the spray water is sprayed from the nozzle 16 and sprayed on the surface of the flat jacket 31 of the plate-jacket condenser 3. The exhaust fan 17 exhausts air, and the air passes over the surface of the flat jacket 31, and the spray on it Water evaporates to cool down, and the spray water exchanges heat with the high-temperature refrigerant through the plate wall. The condensation heat is taken away by the wet air. Through the joint cooling of water cooling and evaporative cooling, the high-temperature and high-pressure gaseous refrigerant is cooled into a high-pressure liquid refrigerant, and the condensation heat is discharged into the atmosphere and the external water body. The refrigerant is cooled into a high-pressure liquid refrigerant, and then expanded and throttled by the throttle 5 to become a low-temperature and low-pressure liquid refrigerant. It evaporates and absorbs heat in the evaporator 4 to provide refrigerant for the air-conditioning terminal. The refrigerant becomes a low-pressure gaseous refrigerant and finally returns to the compressor 1, completing a refrigeration cycle. The refrigerant cycle process is the same as above.

[0044] During winter heating, the heat pump system is converted into a heating cycle, the plate-jacketed condenser 3 is converted into an evaporator, and the original evaporator 4 is converted into a condenser. The plate-jacketed condenser 3 adopts a heating method of air cooling, water cooling, evaporative cooling, a combination of air cooling and water cooling, and a combination of water cooling and evaporative cooling.

[0045] When air cooling is adopted, the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 1 enters the evaporator 4 through the four-way reversing valve 2. The condensation heat of the refrigerant heats the air-conditioning water and becomes a high-pressure liquid refrigerant. Then, it expands and throttles through the throttle 5 and becomes a low-temperature and low-pressure liquid refrigerant. Then, it enters the flat jacket 31 of the plate-jacket condenser 3. The exhaust fan 17 exhausts air and draws air in from the lower part of the plate-jacket condenser 3. The refrigerant evaporates and absorbs heat through the plate wall and exchanges heat with the air, becoming a low-pressure gaseous refrigerant. Finally, it returns to the compressor, completing a heating cycle. The refrigerant circulation process is: compressor 1→four-way reversing valve 2→evaporator 4→check valve 11→liquid storage tank 8→drying filter 7→liquid indicator mirror 6→throttle 5→check valve 12→plate-jacket condenser 3→four-way reversing valve 2→gas-liquid separator 9→compressor 1.

[0046] When water cooling is used, the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 1 enters the evaporator 4 through the four-way reversing valve 2. The condensation heat of the refrigerant heats the air-conditioning water, and the refrigerant becomes a high-pressure liquid refrigerant. It then expands and throttles through the throttle 5 to become a low-temperature and low-pressure liquid refrigerant, and enters the flat outer jacket 31 of the plate-and-jacket condenser 3. External heat source water enters the flat inner jacket 32 ​​or inner tube 40 of the plate-and-jacket condenser 3. The refrigerant exchanges heat with the external heat source water through the plate wall and evaporates and absorbs heat, becoming a low-pressure gaseous refrigerant, and finally returns to the compressor, completing a heating cycle. The refrigerant circulation process is the same as above.

[0047] When evaporative cooling is adopted, the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 1 enters the evaporator 4 through the four-way reversing valve 2, the refrigerant condensation heat heats the air-conditioning water and becomes a high-pressure liquid refrigerant, and then expands and throttles through the throttle 5 to become a low-temperature and low-pressure liquid refrigerant, and enters the flat jacket 31 of the plate-jacket condenser 3, the circulating water pump 15 of the spray system circulates, the spray water is sprayed from the nozzle 16, and sprayed on the surface of the flat jacket 31 of the plate-jacket condenser 3, the exhaust fan 17 exhausts air, and the air passes over the surface of the flat jacket 31, exchanges heat with the spray water thereon, is cooled and cooled, the water vapor condenses, the refrigerant exchanges heat with the spray water through the plate wall, evaporates and absorbs heat, and becomes a low-pressure gaseous refrigerant, and finally returns to the compressor 1, completing a heating cycle, and the refrigerant circulation process is the same as above.

[0048] When a combination of air cooling and water cooling is used for heating, the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 1 enters the evaporator 3 through the four-way reversing valve 2. The condensation heat of the refrigerant heats the air-conditioning water and becomes a high-pressure liquid refrigerant. It then expands and throttles through the throttle 5 and becomes a low-temperature and low-pressure liquid refrigerant. It enters the flat jacket 31 of the plate-jacket condenser 3. The exhaust fan 17 exhausts air and draws air in from the lower part of the plate-jacket condenser 3. The refrigerant evaporates and absorbs heat through heat exchange with the air through the plate wall. At the same time, water from the external heat source enters the flat inner jacket 32 ​​or inner tube 40 of the plate-jacket condenser 3 and exchanges heat with the low-temperature and low-pressure liquid refrigerant in the flat jacket 31. Through the joint heating of air cooling and water cooling, the low-temperature and low-pressure liquid refrigerant becomes a low-pressure gaseous refrigerant and finally returns to the compressor, completing a heating cycle. The refrigerant circulation process is the same as above.

[0049] When a combination of water cooling and evaporative cooling is used for heating, the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 1 enters the evaporator 3 through the four-way reversing valve 2. The condensation heat of the refrigerant heats the air-conditioning water and becomes a high-pressure liquid refrigerant. Then, it expands and throttles through the throttle 5 and becomes a low-temperature and low-pressure liquid refrigerant. It enters the flat jacket 31 of the plate-jacket condenser 3. The external heat source water enters the flat inner jacket 32 ​​or inner tube 40 of the plate-jacket condenser 3. The refrigerant exchanges heat with the external heat source water through the plate wall and evaporates to absorb heat. At the same time, the spray system The circulating water pump 15 circulates, and spray water is sprayed from the nozzle 16 and sprayed on the surface of the flat jacket 31 of the plate jacket condenser 3. The exhaust fan 17 exhausts air, and the air passes over the surface of the flat jacket 31, exchanges heat with the spray water thereon and is cooled down, and the water vapor condenses. The refrigerant exchanges heat with the spray water through the plate wall, evaporates and absorbs heat, and is heated by a combination of water cooling and evaporative cooling. The low-temperature and low-pressure liquid refrigerant is converted into a low-pressure gaseous refrigerant, and finally returns to the compressor 1, completing a heating cycle. The refrigerant circulation process is the same as above.

[0050] The operation mode in the transition season can refer to the operation mode in summer and winter. Through the above method, only the plate-jacket condenser 3 is used, various cold and heat sources are comprehensively and effectively utilized, the energy-saving effect is significant, and the structure is compact and the volume is small.

[0051] Figure 7 , 8 In 9, the plate inner jacket 32 ​​of the plate-jacket condenser 3 adopts a microchannel plate heat exchanger, and the size of the microchannel 41 is controlled to be less than 3 mm, which can also be called a micro-tube channel heat exchanger. The shape of the microchannel 41 is not limited to square or round, and the structural form is not limited to that shown in the figure. The microchannel 41 is a single-row channel or two or more rows of channels. The microchannel 41 passes through the refrigerant, which is conducive to the rapid heat transfer of the refrigerant and is not easy to block the channel. There is a large macro channel between the outside of the microchannel 41 and the flat outer jacket 31. Since it is difficult to ensure the cleanliness of cooling water and it is easy to scale, this macro channel is suitable for passing cooling water. The flat outer jacket 31 can be made into a detachable jacket to facilitate the removal of dirt.

[0052] Figure 8 In the figure, the flat plate inner sleeve 32 is a microchannel flat plate heat exchanger, one end of the microchannel 41 is connected to the air chamber 42, and the other end is connected to the liquid collecting chamber 43, the air chamber 42 is connected to the refrigerant inlet pipe 35, and the liquid collecting chamber 43 is connected to the refrigerant outlet pipe 36. When the heat pump system is in a refrigeration cycle, the plate-jacket condenser 3 is a condenser, and the high-temperature and high-pressure gaseous refrigerant first enters the air chamber 42 from the refrigerant inlet pipe 35, is divided into each microchannel 41, exchanges heat with the cooling water, is condensed into a high-pressure liquid refrigerant, is collected in the liquid collecting chamber 43, and finally flows out from the refrigerant outlet pipe 36. When the heat pump system is in a heating cycle, the plate-jacket condenser 3 is converted into an evaporator, and the low-temperature and low-pressure liquid refrigerant enters the liquid collecting chamber 43 from the refrigerant outlet pipe 36, is divided into each microchannel 41, exchanges heat with the cooling water, evaporates and absorbs heat, becomes a low-pressure gaseous refrigerant, is collected in the air chamber 42, and finally flows out from the refrigerant inlet pipe 35. The refrigerant and the cooling water flow in opposite directions. The flat inner jacket 32 ​​can be made of aluminum alloy sintered at high temperature and installed inside the flat outer jacket 31. The refrigerant inlet pipe 35 and the refrigerant outlet pipe 36 are sealed through the plate wall of the flat outer jacket 31. When the outer plate wall of the flat outer jacket 31 is air-cooled or evaporatively cooled, the inside must be filled with cooling water so that the refrigerant can exchange heat with the refrigerant outside the plate through the cooling water.

[0053] Fig. 9 In the figure, the flat inner sleeve 32 is made of two metal plates. First, the two metal plates are punched out with grooves of half microchannel 41, gas separation chamber 42, and liquid collection chamber 43. Then, the two metal plates are put together, and the refrigerant inlet pipe 35 is placed in the gas separation chamber 42, and the refrigerant outlet pipe 36 is placed in the liquid collection chamber 43. Through welding, pressing, brazing and other processes, the two metal plates are sealed together to form a complete microchannel flat plate heat exchanger, which is installed in the flat outer sleeve 31 to form a plate-jacket condenser 3. The microchannel flat plate heat exchanger made of metal plates has a higher pressure resistance than aluminum alloy and is more corrosion-resistant.

[0054] Fig.10 , 11 In 12, the plate jacket 31 of the plate jacket condenser 3 adopts a microchannel plate heat exchanger, which has the same structure as above. A closed plate inner jacket 32 ​​is formed between the two plate jackets 31, connected to a cooling water inlet pipe 33 and a cooling water outlet pipe 34, forming a cooling water channel, and the cooling water and the refrigerant flow in opposite directions. On the outside of the plate jacket 31, the refrigerant exchanges heat through air cooling and evaporative cooling; on the inside of the plate jacket 31, the refrigerant exchanges heat through water cooling. It is easy to remove dirt. Fig.11 The plate-and-jacket condenser 3 can be formed by sintering an aluminum alloy as a whole at a high temperature. Fig.12 The plate-jacket condenser 3 can be formed by welding metal plates, and the flat jacket 31 can be made into a detachable jacket to facilitate cleaning of dirt.

[0055] Fig.13 In the embodiment, a plurality of plate-and-jacket condensers 3 form two groups of condensers, which are connected in parallel in the heat pump system. There is an exhaust passage between the two groups of condensers, and the outer side is connected to the air outside the shell. An exhaust fan 17 is installed above the exhaust passage, and a water spraying plate 45 is installed in the exhaust passage. Each plate-and-jacket condenser 3 is arranged horizontally in parallel, and a water spraying duct 44 is formed between each of them. A nozzle 16 is installed at one end to spray water into the water spraying duct 44, and the other end is connected to the exhaust passage. When evaporative cooling is performed, the exhaust fan 17 exhausts air, and the nozzle 16 sprays water into the water spraying duct 44. The refrigerant discharges heat or absorbs heat into the air through the spraying water, and is discharged into the atmosphere by the exhaust fan 17. The spraying water flows through the water spraying plate 45 of the exhaust passage and falls into the water collecting tank 14. The two groups of condensers can also be cooled by water, air, a combination of water and air, or a combination of water and evaporative cooling.

[0056] Fig.14 , 15 In the figure, two groups of plate-jacket condensers 46 and 47 are connected in parallel or in series in the heat pump system. In the figure, they are connected in parallel. Each group of plate-jacket condensers is composed of multiple plate-jacket condensers 3 connected in parallel, and the two are arranged vertically in the shell. The upper plate-jacket condenser 46 can be sprayed with water. Each plate-jacket condenser 3 is arranged horizontally or vertically. When arranged horizontally, the nozzle 16 is installed on the side, and water cooling, air cooling, evaporative cooling, water cooling and air cooling combined cooling, and water cooling and evaporative cooling combined cooling can be performed. The lower plate-jacket condenser 47 is not sprayed with water, and only air cooling, water cooling, and water cooling and air cooling combined cooling are performed. Each plate-jacket condenser 3 is arranged horizontally or vertically. Each plate-jacket condenser 3 has a heat exchange air duct 52, one end of which is an air inlet, and the other end is equipped with an exhaust fan 17. Using two groups of plate-jacket condensers, one can be backed up, and the reliability of the equipment is improved. When one group of plate-jacket condensers is frosted in winter, the other can be used as a standby to ensure the normal operation of the equipment.

[0057] Fig.16 In the embodiment, the evaporator 4 adopts a double coil or double shell tube or sleeve evaporator, which is provided with a hot water coil 55 and an air conditioning water coil 56. The refrigerant exchanges heat with the hot water coil 55 and the air conditioning water coil 56 in the evaporator 4. When the evaporator 4 is used as an evaporator, air conditioning chilled water is provided through the air conditioning water coil 56; when the evaporator 4 is used as a condenser, air conditioning hot water is provided through the air conditioning water coil 56, and domestic hot water is provided through the hot water coil 55; when the evaporator 4 is used as an evaporator, the plate-jacket condenser 46 and 47 can be used as a condenser to provide domestic hot water, the solenoid valves 51 and 53 and the throttle 54 are opened, the solenoid valve 50 is closed, the heat pump system heats the cycle, and the plate-jacket condenser 47 is used to provide domestic hot water.

[0058] In summary, no matter it is a large air conditioning system or a small or medium-sized air conditioning system, as long as there is abundant waste gas, waste water or natural water as a cooling source and heat source, the unit of the utility model can be used.

[0059] The above is only the preferred implementation method of the utility model, and does not limit the utility model in any form. Any simple modification, equivalent change and modification made to the above implementation method based on the technical essence of the utility model shall fall within the protection scope of the utility model.

Claims

1. A heat pump unit with a plate-jacket condenser, comprising a heat pump system, a spray system, an exhaust fan, and a housing, characterized in that: The heat pump system includes a plate-and-jacket condenser, an evaporator, a compressor, a throttle, and a four-way reversing valve. The cooling water pipe of the plate-and-jacket condenser is directly or indirectly connected to the spray system or an external cold source. The refrigerant pipe is connected to the heat pump system. Air cooling, water cooling, evaporative cooling, a combination of air cooling and water cooling, and a combination of water cooling and evaporative cooling are adopted. Multiple plate-and-jacket condensers are vertically installed in the shell. The cooling water inlet pipe and the cooling water outlet pipe are connected to the water collector and the water distributor. The refrigerant pipe is connected to the liquid distributor box. The evaporator is a water-cooled evaporator or an air-cooled evaporator. The spray system includes a circulating water pump, a nozzle, a pipe, a water collecting tank, and its pipes are connected to the heat pump system. The duct is connected with the plate-jacket condenser or an external cold source, the exhaust fan is installed at the air outlet of the shell, the pipes and nozzles of the spray system are arranged below, the plate-jacket condenser is arranged below the nozzle, the spray water is sprayed on the plate-jacket condenser, and there is a water collecting tank below the plate-jacket condenser to collect the spray water. An evaporator, a compressor, a throttle, a four-way reversing valve, and a circulating water pump are installed below the water collecting tank. The side of the plate-jacket condenser is an outer shell, and the shell between the lower part and the upper part of the water collecting tank has an air inlet. The heat pump system, the spray system, and the exhaust fan are assembled in the shell to form an integral heat pump unit with a plate-jacket condenser.

2. A heat pump unit with a plate-jacket condenser, comprising a heat pump system, a spray system, an exhaust fan, and a housing, characterized in that: The heat pump system includes a plate-and-jacket condenser, an evaporator, a compressor, a throttle, and a four-way reversing valve. The cooling water pipe of the plate-and-jacket condenser is directly or indirectly connected to the spray system or an external cold source, and the refrigerant pipe is connected to the heat pump system. Air cooling, water cooling, evaporative cooling, a combination of air cooling and water cooling, and a combination of water cooling and evaporative cooling are adopted. Multiple plate-and-jacket condensers form two groups of condensers, which are connected in parallel in the heat pump system. The cooling water inlet pipe and the cooling water outlet pipe are connected to the water collector and the water distributor, and the refrigerant pipe is connected to the liquid separation box. There is an exhaust duct between the two groups of condensers, and the outer side is connected to the air outside the shell. An exhaust fan is installed above the exhaust duct, and a Water spraying plate, each plate-jacket condenser is arranged horizontally in parallel, and a water spraying air duct is formed between each plate-jacket condenser. A nozzle is installed at one end to spray water to the water spraying air duct, and the other end is connected to the exhaust duct. The evaporator is a water-cooled evaporator or an air-cooled evaporator. The spraying system includes a circulating water pump, a nozzle, a pipe, and a water collecting tank. The pipe is connected to the plate-jacket condenser or an external cold source. The exhaust fan is installed at the air outlet of the shell. There is a water collecting tank below the plate-jacket condenser to collect the spraying water. The evaporator, compressor, throttle, four-way reversing valve, and circulating water pump are installed below the water collecting tank. The heat pump system, the spraying system, and the exhaust fan are assembled in the shell to form an integral heat pump unit with a plate-jacket condenser.

3. A heat pump unit with a plate-jacket condenser, comprising a heat pump system, a spray system, an exhaust fan, and a housing, characterized in that: The heat pump system includes a plate-and-tube condenser, an evaporator, a compressor, a throttle, and a four-way reversing valve. The cooling water pipe of the plate-and-tube condenser is directly or indirectly connected to the spray system or an external cold source, and the refrigerant pipe is connected to the heat pump system. It has two sets of plate-and-tube condensers, which are connected in series or in parallel in the heat pump system. The two are arranged vertically in the shell up and down. The upper plate-and-tube condenser adopts air cooling, water cooling, evaporative cooling, a combination of air cooling and water cooling, and a combination of water cooling and evaporative cooling. The lower plate-and-tube condenser adopts water cooling, air cooling, and a combination of air cooling and water cooling. Each set of sleeve condensers is composed of multiple plate-and-tube condensers connected in parallel or in series, and arranged horizontally or vertically in the shell. The cooling water inlet pipe and cooling water outlet pipe are connected to the water collector and the water distributor. , the refrigerant pipe is connected to the liquid collection tank, the evaporator is a water-cooled evaporator or an air-cooled evaporator, the spray system includes a circulating water pump, a nozzle, a pipe, and a water collection tank, and the pipe is connected to the plate-jacket condenser or an external cold source through a valve. The exhaust fan is installed at the air outlet above the shell, and the pipes and nozzles of the spray system are arranged below. A plate-jacket condenser is arranged below the nozzle, and the cooling water is sprayed on the plate-jacket condenser. Below the plate-jacket condenser is a water collection tank for the spray system to collect cooling water. Another set of plate-jacket condensers is arranged below the water collection tank, which has an exhaust fan, and below it, an evaporator, a compressor, and a circulating water pump are arranged. The heat pump system, the spray system, and the exhaust fan are assembled in the shell to form an integral heat pump unit with a plate-jacket condenser.

4. The heat pump unit with a plate-jacket condenser according to claim 1, 2 or 3, characterized in that: The plate-jacket condenser comprises a flat outer jacket and a flat inner jacket. The flat outer jacket and the flat inner jacket are closed planar shells with a cooling water inlet pipe, a cooling water outlet pipe, a refrigerant inlet pipe and a refrigerant outlet pipe. The flat inner jacket is mounted in the flat outer jacket, and the cooling water and refrigerant inlet and outlet pipes pass through the shell of the flat outer jacket. The flat outer jacket passes the refrigerant and the flat inner jacket passes the cooling water, or the flat outer jacket passes the cooling water and the flat inner jacket passes the refrigerant. In the plate-jacket condenser, the refrigerant and the cooling water flow in opposite directions.

5. The heat pump unit with a plate-jacket condenser according to claim 1, 2 or 3, characterized in that: The plate-jacket condenser includes a flat outer shell and an inner tube. The flat outer shell is a closed planar shell with a cooling water inlet pipe, a cooling water outlet pipe, a refrigerant inlet pipe, and a refrigerant outlet pipe. The inner tube is a serpentine tube or a spiral tube. The inner tube is installed in the flat outer shell and passes through the shell of the flat outer shell. The flat outer shell passes the refrigerant and the cooling water, or the flat outer shell passes the cooling water and the inner tube passes the refrigerant. In the plate-jacket condenser, the refrigerant and the cooling water flow in opposite directions.

6. The heat pump unit with a plate-jacket condenser according to claim 1, 2 or 3, characterized in that: The plate-jacket condenser includes a flat outer jacket and a flat inner jacket. The flat outer jacket is a closed planar shell with a cooling water inlet pipe and a cooling water outlet pipe. The flat inner jacket is a microchannel flat plate heat exchanger, which includes an air distribution chamber, a liquid collecting chamber, and a microchannel. One end of the microchannel is connected to the air distribution chamber, and the other end is connected to the liquid collecting chamber. The air distribution chamber and the liquid collecting chamber are connected to a refrigerant inlet pipe and a refrigerant outlet pipe. It is installed in the flat outer jacket, and its refrigerant inlet and outlet pipes pass through the shell of the flat outer jacket. The flat outer jacket passes cooling water, and the flat inner jacket passes refrigerant. In the plate-jacket condenser, the refrigerant and the cooling water flow in opposite directions.

7. The heat pump unit with a plate-jacket condenser according to claim 1, 2 or 3, characterized in that: The plate-jacket condenser includes a flat outer jacket and a flat inner jacket. The flat outer jacket is two microchannel flat plate heat exchangers through which refrigerant passes. It includes an air distribution chamber, a liquid collecting chamber, and a microchannel. One end of the microchannel is connected to the air distribution chamber, and the other end is connected to the liquid collecting chamber. The air distribution chamber and the liquid collecting chamber are connected to a refrigerant inlet pipe and a refrigerant outlet pipe. A closed flat inner jacket is formed between the two microchannel flat plate heat exchangers. It has a cooling water inlet pipe and a cooling water outlet pipe to form a cooling water channel. In the plate-jacket condenser, the refrigerant and the cooling water flow in opposite directions.

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