Heat pump dehumidification system and dehumidification equipment

Abstract

The present application relates to the technical field of dehumidification equipment, and particularly provides a heat pump dehumidification system and dehumidification equipment, which aims to solve the problem that heat transfer from a low-temperature stage heat pump system to a high-temperature stage heat pump system is relatively complex and difficult to develop in a traditional cascade heat pump system. To this end, the heat pump dehumidification system comprises a first heat pump system, a second heat pump system, a water tank, a first runner and a second runner, wherein the condenser of the first heat pump system is connected with the evaporator of the second heat pump system through the water tank, so that the first heat pump system can heat the refrigerant in the water tank to provide a heat source for the second heat pump system, thereby improving the evaporation temperature of the second heat pump system and further improving the gas temperature flowing through the second condenser, so that the second heat pump system and the first heat pump system can realize heat exchange through the water tank, realize heat transfer from the low-temperature stage heat pump system to the high-temperature stage heat pump system, make heat transfer simpler, and greatly reduce the development difficulty.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of dehumidification equipment, and particularly provides a heat pump dehumidification system and a dehumidification equipment. BACKGROUND

[0002] At present, in the field of dehumidification equipment, traditional electric heating or steam heating and hot water heating are usually used as the basis for regenerative energy to develop dehumidification equipment that meets current processes. These traditional dehumidification equipment consumes a lot of energy, which is not conducive to energy saving and emission reduction. In order to achieve energy saving and emission reduction, a cascade heat pump system is usually used. The cascade heat pump system provides heat source from the low-temperature stage to the high-temperature stage through two-stage compression, so that the high-temperature stage obtains a higher evaporation temperature, thereby realizing a higher water outlet temperature or air outlet temperature. However, the heat transfer between the high-temperature stage and the low-temperature stage of the cascade heat pump system is relatively complex, and the development difficulty is high.

[0003] Therefore, there is a need in the art for a new technical solution to solve the above problems. SUMMARY

[0004] In order to solve at least one problem in the prior art, i.e. to solve the problem that the heat transfer from the low-temperature stage to the high-temperature stage in the traditional cascade heat pump system is relatively complex and the development difficulty is high, the present application provides a heat pump dehumidification system, which comprises a first heat pump system, a second heat pump system, a water tank, a first rotary wheel and a second rotary wheel.

[0005] The heat pump dehumidification system comprises a first heat pump system, a second heat pump system, a water tank, a first rotary wheel and a second rotary wheel.

[0006] The first heat pump system comprises a first compressor, a first condenser and a first evaporator; the second heat pump system comprises a second compressor, a second condenser and a second evaporator; the first evaporator, the first compressor, the first condenser, the water tank, the second evaporator, the second compressor, the second condenser, the second evaporator, the first condenser and the first evaporator form a first refrigerant circuit in the direction of refrigerant flow.

[0007] The first rotary wheel, the first evaporator and the second rotary wheel are connected in sequence in the direction of gas flow to form a dehumidification system, and the second rotary wheel, the second condenser and the first rotary wheel are connected in sequence in the direction of gas flow to form a regeneration system.

[0008] In the preferred technical solution of the above heat pump dehumidification system, the dehumidification system further comprises a third heat pump system, the third heat pump system comprises a third compressor, a third condenser and a third evaporator; the third evaporator, the third compressor and the third condenser form a second refrigerant circuit in the direction of refrigerant flow.

[0009] The third condenser is arranged at an inlet side of the regeneration system, and the third evaporator is arranged at an outlet side of the regeneration system.

[0010] In the preferred technical scheme of the heat pump dehumidification system, the third heat pump system further comprises a third throttling device arranged between the third evaporator and the third condenser in the third refrigerant circuit, and the third throttling device is arranged in parallel with the third compressor.

[0011] In the preferred technical scheme of the heat pump dehumidification system, the third throttling device is a third electronic expansion valve, a third thermal expansion valve or a third capillary tube.

[0012] In the preferred technical scheme of the heat pump dehumidification system, the heat pump dehumidification system further comprises a fourth heat pump system;

[0013] The fourth heat pump system comprises a fourth compressor, a fourth condenser and a fourth evaporator;

[0014] The fourth evaporator, the fourth compressor, the fourth condenser and the fourth evaporator form a third refrigerant circuit in a refrigerant flow direction;

[0015] The fourth evaporator is arranged between the first evaporator and the second rotating wheel in the dehumidification system.

[0016] In the preferred technical scheme of the heat pump dehumidification system, the fourth heat pump system further comprises a fourth throttling device arranged between the fourth evaporator and the fourth condenser in the third refrigerant circuit, and the fourth throttling device is arranged in parallel with the fourth compressor.

[0017] In the preferred technical scheme of the heat pump dehumidification system, the fourth throttling device is a fourth electronic expansion valve, a fourth thermal expansion valve or a fourth capillary tube.

[0018] In the preferred technical scheme of the heat pump dehumidification system, the heat pump dehumidification system further comprises a fifth heat pump system;

[0019] The fifth heat pump system comprises a fifth compressor, a fifth condenser and a fifth evaporator;

[0020] The fourth evaporator, the fourth compressor, the fourth condenser, the fifth evaporator, the fifth compressor, the fifth condenser, the fifth evaporator, the fourth condenser and the fourth evaporator form a fourth refrigerant circuit in a refrigerant flow direction;

[0021] The fifth condenser is arranged between the second condenser and the second rotating wheel in the regeneration system.

[0022] In the preferred technical scheme of the heat pump dehumidification system, the fifth heat pump system further comprises a fifth throttling device, the fifth throttling device is arranged between the fourth evaporator and the fifth condenser in the fourth refrigerant circuit, and the fifth throttling device is arranged in parallel with the fifth compressor.

[0023] In the preferred technical scheme of the heat pump dehumidification system, the fifth throttling device is a fifth electronic expansion valve, a fifth thermal expansion valve or a fifth capillary tube.

[0024] In the preferred technical scheme of the heat pump dehumidification system, the water tank is arranged between the fourth condenser and the fifth evaporator, so that the refrigerant flowing out of the fourth condenser can enter the fifth evaporator through the water tank.

[0025] In the preferred technical scheme of the heat pump dehumidification system, the heat pump system further comprises a drying room, and the drying room is arranged at the outlet side of the dehumidification system.

[0026] In the preferred technical scheme of the heat pump dehumidification system, the outlet side of the drying room is connected with the inlet side of the second condenser in the regeneration system.

[0027] In the preferred technical scheme of the heat pump dehumidification system, the first heat pump system further comprises a first throttling device, the first throttling device is arranged between the first evaporator and the first condenser in the first refrigerant circuit, and the first throttling device is arranged in parallel with the first compressor; and / or

[0028] The second heat pump system further comprises a second throttling device, the second throttling device is arranged between the second evaporator and the second condenser in the first refrigerant circuit, and the second throttling device is arranged in parallel with the second compressor.

[0029] In the preferred technical scheme of the heat pump dehumidification system, the first throttling device is a first electronic expansion valve, a first thermal expansion valve or a first capillary tube; and / or

[0030] The second throttling device is a second electronic expansion valve, a second thermal expansion valve or a second capillary tube.

[0031] In the preferred technical scheme of the heat pump dehumidification system, the outlet side of the dehumidification system is connected with the inlet side of the regeneration system.

[0032] The application further provides a dehumidification device, which comprises the heat pump dehumidification system.

[0033] Scheme 1. A heat pump dehumidification system, characterized in that the heat pump dehumidification system comprises a first heat pump system, a second heat pump system, a water tank, a first rotary wheel and a second rotary wheel;

[0034] The first heat pump system comprises a first compressor, a first condenser and a first evaporator; the second heat pump system comprises a second compressor, a second condenser and a second evaporator; the first evaporator, the first compressor, the first condenser, the water tank, the second evaporator, the second compressor, the second condenser, the second evaporator, the first condenser, the first evaporator form a first refrigerant circuit in the direction of refrigerant flow;

[0035] The first rotary wheel, the first evaporator and the second rotary wheel are sequentially connected in the direction of gas flow to form a dehumidification system, and the second rotary wheel, the second condenser and the first rotary wheel are sequentially connected in the direction of gas flow to form a regeneration system.

[0036] Scheme 2. The heat pump dehumidification system according to scheme 1, characterized in that the dehumidification system further comprises a third heat pump system, the third heat pump system comprising a third compressor, a third condenser and a third evaporator; the third evaporator, the third compressor, the third condenser, the third evaporator form a second refrigerant circuit in the direction of refrigerant flow;

[0037] The third condenser is arranged on the inlet side of the regeneration system, and the third evaporator is arranged on the outlet side of the regeneration system.

[0038] Scheme 3. The heat pump dehumidification system according to scheme 2, characterized in that the third heat pump system further comprises a third throttling device, the third throttling device being arranged between the third evaporator and the third condenser in the second refrigerant circuit, and the third throttling device being arranged in parallel with the third compressor.

[0039] Scheme 4. The heat pump dehumidification system according to scheme 3, characterized in that the third throttling device is a third electronic expansion valve, a third thermal expansion valve or a third capillary tube.

[0040] Scheme 5. The heat pump dehumidification system according to scheme 1, characterized in that the heat pump dehumidification system further comprises a fourth heat pump system;

[0041] The fourth heat pump system comprises a fourth compressor, a fourth condenser and a fourth evaporator;

[0042] The fourth evaporator, the fourth compressor, the fourth condenser, the fourth evaporator form a third refrigerant circuit in the direction of refrigerant flow;

[0043] The fourth evaporator is arranged between the first evaporator and the second rotary wheel in the dehumidification system.

[0044] Scheme 6. The heat pump dehumidification system according to scheme 5, wherein the fourth heat pump system further comprises a fourth throttling device arranged between the fourth evaporator and the fourth condenser in the fourth refrigerant circuit, and the fourth throttling device is arranged in parallel with the fourth compressor.

[0045] Scheme 7. The heat pump dehumidification system according to scheme 6, wherein the fourth throttling device is a fourth electronic expansion valve, a fourth thermal expansion valve or a fourth capillary tube.

[0046] Scheme 8. The heat pump dehumidification system according to scheme 5, wherein the heat pump dehumidification system further comprises a fifth heat pump system;

[0047] The fifth heat pump system comprises a fifth compressor, a fifth condenser and a fifth evaporator;

[0048] The fourth evaporator, the fourth compressor, the fourth condenser, the fifth evaporator, the fifth compressor, the fifth condenser, the fifth evaporator, the fourth condenser and the fourth evaporator form a fourth refrigerant circuit in the direction of refrigerant flow;

[0049] The fifth condenser is arranged between the second condenser and the second rotary wheel in the regeneration system.

[0050] Scheme 9. The heat pump dehumidification system according to scheme 8, wherein the fifth heat pump system further comprises a fifth throttling device arranged between the fourth evaporator and the fifth condenser in the fourth refrigerant circuit, and the fifth throttling device is arranged in parallel with the fifth compressor.

[0051] Scheme 10. The heat pump dehumidification system according to scheme 9, wherein the fifth throttling device is a fifth electronic expansion valve, a fifth thermal expansion valve or a fifth capillary tube.

[0052] Scheme 11. The heat pump dehumidification system according to scheme 8, wherein the water tank is arranged between the fourth condenser and the fifth evaporator, so that the refrigerant flowing out of the fourth condenser can enter the fifth evaporator through the water tank.

[0053] Scheme 12. The heat pump dehumidification system according to scheme 1, wherein the heat pump system further comprises a drying room arranged on the outlet side of the dehumidification system.

[0054] Scheme 13. The heat pump dehumidification system according to scheme 12, wherein the outlet side of the drying chamber is connected to the inlet side of the second condenser in the regeneration system.

[0055] Scheme 14. The heat pump dehumidification system according to scheme 1, wherein the first heat pump system further comprises a first throttling device, the first throttling device is arranged between the first evaporator and the first condenser in the first refrigerant circuit, and the first throttling device is arranged in parallel with the first compressor; and / or

[0056] the second heat pump system further comprises a second throttling device, the second throttling device is arranged between the second evaporator and the second condenser in the first refrigerant circuit, and the second throttling device is arranged in parallel with the second compressor.

[0057] Scheme 15. The heat pump dehumidification system according to scheme 14, wherein the first throttling device is a first electronic expansion valve, a first thermal expansion valve or a first capillary tube; and / or

[0058] the second throttling device is a second electronic expansion valve, a second thermal expansion valve or a second capillary tube.

[0059] Scheme 16. The heat pump dehumidification system according to scheme 1, wherein the outlet side of the dehumidification system is connected to the inlet side of the regeneration system.

[0060] Scheme 17. A dehumidification device, comprising the heat pump dehumidification system according to any one of schemes 1-16.

[0061] As understood by those skilled in the art, the heat pump dehumidification system of the present application comprises a first heat pump system, a second heat pump system, a water tank, a first rotary wheel and a second rotary wheel, wherein the condenser of the first heat pump system is connected to the evaporator of the second heat pump system through the water tank, so that the first heat pump system can heat the refrigerant in the water tank to provide a heat source for the second heat pump system, thereby increasing the evaporation temperature of the second heat pump system, and further increasing the temperature of the gas flowing through the second condenser, so that the second heat pump system and the first heat pump system can realize heat exchange through the water tank, realize heat transfer from the low-temperature stage heat pump system to the high-temperature stage heat pump system, and make the heat transfer simpler, greatly reducing the development difficulty.

[0062] Further, by arranging a third heat pump system, the third condenser of the third heat pump system is arranged at the inlet side of the regeneration system so that the gas can be stepwise condensed by the second condenser, and the dehumidification capacity of the first rotary wheel is reset, greatly improving the energy efficiency and stability of the entire heat pump dehumidification system. In addition, arranging the third evaporator at the outlet side of the regeneration system can reduce the temperature of the gas after passing through the first rotary wheel.

[0063] Further, by setting the fourth heat pump system, the fourth evaporator in the fourth heat pump system is arranged in the dehumidification system and between the first evaporator and the second rotary wheel, so that the outdoor fresh air can be cooled twice by the evaporators, improving the dehumidification effect of the fresh air.

[0064] Further, by setting the fourth throttling device, throttling and pressure reduction can be achieved.

[0065] Further, by setting the fifth heat pump system, the fifth condenser in the fifth heat pump system is arranged in the regeneration system and between the second condenser and the second rotary wheel, so that the gas can be condensed by three condensers in cascade, greatly improving the energy efficiency and stability of the entire heat pump dehumidification system.

[0066] Further, by setting the fifth throttling device, throttling and pressure reduction can be achieved.

[0067] Further, by setting the drying room, the drying room is arranged at the outlet side of the dehumidification system, so that the outdoor fresh air after dehumidification enters the drying room to dry the products or equipment in the drying room. BRIEF DESCRIPTION OF DRAWINGS

[0068] The preferred embodiments of the present application will be described below with reference to the accompanying drawings, in which:

[0069] Figure 1 is a flow chart of the heat pump dehumidification system of the present application.

[0070] LIST OF REFERENCE NUMBERS:

[0071] 1, first compressor; 2, first condenser; 3, first evaporator; 4, first throttling device; 5, second compressor; 6, second condenser; 7, second evaporator; 8, second throttling device; 9, third compressor; 10, third condenser; 11, third evaporator; 12, third throttling device; 13, fourth compressor; 14, fourth condenser; 15, fourth evaporator; 16, fourth throttling device; 17, fifth compressor; 18, fifth condenser; 19, fifth evaporator; 20, fifth throttling device; 21, water tank; 22, first rotary wheel; 23, second rotary wheel; 24, drying room. DETAILED DESCRIPTION

[0072] The preferred embodiments of the present application will be described below with reference to the accompanying drawings, in which:

[0073] It should be noted that in the description of the present application, the terms indicating the direction or positional relationship of "upper", "lower", "inner", "bottom", "end" and the like are based on the direction or positional relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0074] In addition, it should be noted that in the description of the present application, unless otherwise explicitly specified and limited, the terms "set", "connected", "communicated" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0075] First refer to Figure 1 The heat pump dehumidification system of the present application is described. Among them, Figure 1 is a flow chart of the heat pump dehumidification system of the present application.

[0076] As Figure 1 shown, in order to solve the problem that the heat transfer from the low-temperature stage heat pump system to the high-temperature stage heat pump system in the traditional cascade heat pump system is more complex and the development difficulty is large, the heat pump dehumidification system of the present application includes a first heat pump system, a second heat pump system, a water tank 21, a first runner 22 and a second runner 23. The first heat pump system includes a first compressor 1, a first condenser 2 and a first evaporator 3; the second heat pump system includes a second compressor 5, a second condenser 6 and a second evaporator 7; the first evaporator 3, the first compressor 1, the first condenser 2, the water tank 21, the second evaporator 7, the second compressor 5, the second condenser 6, the second evaporator 7, the first condenser 2, the first evaporator 3 form a first refrigerant circuit according to the flow direction of the refrigerant. The first runner 22, the first evaporator 3, the second runner 23 are connected in sequence along the gas flow direction to form a dehumidification system, and the second runner 23, the second condenser 6 and the first runner 22 are connected in sequence along the gas flow direction to form a regeneration system.

[0077] The heat pump dehumidification system of the present application comprises two refrigerant circuits, i.e. a first refrigerant circuit and a second refrigerant circuit. In the first refrigerant circuit, the refrigerant flow path is first evaporator 3→ first compressor 1→ first condenser 2→ water tank 21→ second evaporator 7→ second compressor 5→ second condenser 6→ second evaporator 7→ first condenser 2→ first evaporator 3. The heat pump dehumidification system of the present application further comprises a dehumidification system and a regeneration system. In the dehumidification system, the gas flow path is outdoor fresh air→ first runner 22→ first evaporator 3→ second runner 23. In the regeneration system, the gas flow path is second condenser 6→ first runner 22→ exhaust air.

[0078] The heat pump dehumidification system of the present application comprises a first heat pump system, a second heat pump system, a water tank 21, a first runner 22 and a second runner 23. The first and second heat pump systems each comprise a compressor, a condenser and an evaporator. The condenser of the first heat pump system is connected to the evaporator of the second heat pump system through the water tank 21, so that the first heat pump system can heat the refrigerant in the water tank 21 to provide a heat source for the second heat pump system, thereby increasing the evaporation temperature of the second heat pump system and further increasing the temperature of the gas flowing through the second condenser 6. The second heat pump system and the first heat pump system can exchange heat through the water tank 21, the low-temperature heat pump system can transfer heat to the high-temperature heat pump system, the heat transfer is simpler, and the development difficulty is greatly reduced.

[0079] Further reference will be made below Figure 1 A preferred embodiment of the heat pump dehumidification system of the present application will be described. It will be understood by those skilled in the art that the following embodiment is only used to illustrate the principles of the present application and is not intended to limit the scope of protection of the present application. Under the premise that the heat pump dehumidification system at least comprises a first heat pump system, a second heat pump system, a water tank 21, a first runner 22 and a second runner 23, those skilled in the art can adjust the following arrangement to adapt the present application to more specific application scenarios.

[0080] Reference will be made to Figure 1 In a more preferred embodiment, the heat pump dehumidification system comprises a first heat pump system, a second heat pump system, a third heat pump system, a fourth heat pump system, a fifth heat pump system, a water tank 21, a drying room 24, a first runner 22 and a second runner 23.

[0081] Reference will be made to Figure 1The first heat pump system comprises a first compressor 1, a first condenser 2, a first evaporator 3 and a first electronic expansion valve. The first compressor 1 is connected with the first electronic expansion valve in parallel, and then connected with the first evaporator 3 and the first condenser 2. The second heat pump system comprises a second compressor 5, a second condenser 6, a second evaporator 7 and a second electronic expansion valve. The second compressor 5 is connected with the second electronic expansion valve in parallel, and then connected with the second evaporator 7 and the second condenser 6. The third heat pump system comprises a third compressor 9, a third condenser 10, a third evaporator 11 and a third electronic expansion valve. The third compressor 9 is connected with the third electronic expansion valve in parallel, and then connected with the third evaporator 11 and the third condenser 10. The fourth heat pump system comprises a fourth compressor 13, a fourth condenser 14, a fourth evaporator 15 and a fourth electronic expansion valve. The fourth compressor 13 is connected with the fourth electronic expansion valve in parallel, and then connected with the fourth evaporator 15 and the fourth condenser 14. The fifth heat pump system comprises a fifth compressor 17, a fifth condenser 18, a fifth evaporator 19 and a fifth electronic expansion valve. The fifth compressor 17 is connected with the fifth electronic expansion valve in parallel, and then connected with the fifth evaporator 19 and the fifth condenser 18.

[0082] Of course, the application is not fixed to the setting form of the first throttling device 4, the second throttling device 8, the third throttling device 12, the fourth throttling device 16 and the fifth throttling device 20, and those skilled in the art can adjust according to the specific application occasion. For example, the first throttling device 4 can also be a first thermal expansion valve or a first capillary. And / or, the second throttling device 8 can also be a second thermal expansion valve or a second capillary. And / or, the third throttling device 12 can also be a third thermal expansion valve or a third capillary. And / or, the fourth throttling device 16 can also be a fourth thermal expansion valve or a fourth capillary. And / or, the fifth throttling device 20 can also be a fifth thermal expansion valve or a fifth capillary.

[0083] In other specific embodiments, the first throttling device 4 is not necessarily set, and those skilled in the art can adjust as needed. And / or, the second throttling device 8 is not necessarily set, and those skilled in the art can adjust as needed. And / or, the third throttling device 12 is not necessarily set, and those skilled in the art can adjust as needed. And / or, the fourth throttling device 16 is not necessarily set, and those skilled in the art can adjust as needed. And / or, the fifth throttling device 20 is not necessarily set, and those skilled in the art can adjust as needed.

[0084] Still referring to Figure 1The heat pump dehumidification system further comprises a water tank 21 arranged between the first heat pump system and the second heat pump system and between the fourth heat pump system and the fifth heat pump system, i.e. the water tank 21 is arranged between the first condenser 2 and the second evaporator 7 and between the fourth condenser 14 and the fifth evaporator 19. The first heat pump system, the second heat pump system and the water tank 21 form a first refrigerant circuit, and the refrigerant flow path in the first refrigerant circuit is first evaporator 3→ first compressor 1→ first condenser 2→ water tank 21→ second evaporator 7→ second compressor 5→ second condenser 6→ second throttling device 8→ second evaporator 7→ first condenser 2→ first throttling device 4→ first evaporator 3. The fourth heat pump system, the fifth heat pump system and the water tank 21 form a third refrigerant circuit, and the refrigerant flow path in the third refrigerant circuit is fourth evaporator 15→ fourth compressor 13→ fourth condenser 14→ water tank 21→ fifth evaporator 19→ fifth compressor 17→ fifth condenser 18→ fifth throttling device 20→ fifth evaporator 19→ fourth condenser 14→ fourth throttling device 16→ fourth evaporator 15. In the present application, the water tank 21 is arranged between the first heat pump system and the second heat pump system, so that the second heat pump system can absorb the heat brought by the first heat pump system, thereby increasing the temperature of the gas flowing through the second condenser 6. The water tank 21 is also arranged between the fourth heat pump system and the fifth heat pump system, so that the fifth heat pump system can absorb the heat brought by the fourth heat pump system, thereby increasing the temperature of the gas flowing through the fifth condenser 18.

[0085] It should be noted that in other embodiments, the third heat pump system is not necessarily provided, and / or the fourth heat pump system is not necessarily provided, and / or the fifth heat pump system is not necessarily provided, and a person skilled in the art can select as needed. When the third heat pump system is not included in the heat pump dehumidification system, the outlet side of the regenerative system is the first rotary wheel, and the outlet side of the second rotary wheel in the regenerative system is the second condensing system. When the fifth heat pump system is not included in the heat pump dehumidification system, the refrigerant flow path in the third refrigerant circuit is fourth evaporator 15→ fourth compressor 13→ fourth condenser 14→ fourth throttling device 16→ fourth evaporator 15. When the fourth heat pump system is not included in the heat pump dehumidification system, the refrigerant flow path in the third refrigerant circuit is fifth evaporator 19→ fifth compressor 17→ fifth condenser 18→ fifth throttling device 20→ fifth evaporator 19. When the fourth heat pump system and the fifth heat pump system are not included in the heat pump dehumidification system, the third refrigerant circuit is not included in the heat pump dehumidification system.

[0086] Next, referring to Figure 1, the first rotary wheel 22, the first evaporator 3, the fourth evaporator 15, the second rotary wheel 23 and the drying room 24 are sequentially connected in the gas flow direction to form a dehumidification system capable of dehumidifying fresh air; the second rotary wheel 22, the third condenser 10, the second condenser 6, the fifth condenser 18, the first rotary wheel 22 and the third evaporator 11 are sequentially connected in the gas flow direction to form a regeneration system capable of resetting the dehumidification capacity of the first rotary wheel. The gas flow path in the dehumidification system is outdoor fresh air→ the first rotary wheel 22→ the first evaporator 3→ the fourth evaporator 15→ the second rotary wheel 22→ the drying room 24. The gas flow path in the regeneration system is the outlet side of the fourth evaporator 15 in the dehumidification system→ the second rotary wheel 22→ the third condenser 10→ the second condenser 6→ the fifth condenser 18→ the first rotary wheel 22→ the third evaporator 11→ exhaust air. The outlet side of the fourth evaporator 15 is connected to the inlet side of the regeneration system. In this application, the outdoor fresh air is dehumidified once by the first rotary wheel 22, then cooled by the first evaporator 3 and the fourth evaporator 15 in turn, part of the gas is dehumidified again by the second rotary wheel 23, and then sent to the drying room 24 for drying treatment of products or equipment, and the other part is combined with the return air of the drying room 24 to form mixed air after passing through the second rotary wheel 23. The mixed air is sequentially cooled by the third condenser 10, the second condenser 6 and the fifth condenser 18 to form high-temperature exhaust air, which is used to heat the first rotary wheel 22 to reset the dehumidification capacity of the first rotary wheel 22. The mixed air passing through the first rotary wheel 22 is cooled again by the third evaporator 11 and then discharged. The outdoor fresh air is cooled twice by the evaporators, which improves the dehumidification efficiency of the fresh air. Moreover, the mixed air is condensed by three condensers in stages, which greatly improves the energy efficiency and stability of the entire dehumidification system. Finally, the mixed air provides a higher evaporation temperature for the third heat pump system, which improves the energy efficiency of the third heat pump system again.

[0087] For the purpose of intuitively understanding the change of the gas temperature during the gas flow, the gas temperature at the inlet side of the first evaporator 3 is taken as 30℃, the temperature of the mixed air at the inlet side of the third condenser 10 is taken as 45℃, the gas temperature at the inlet side of the second condenser 6 is taken as 65℃, the gas temperature at the inlet side of the fifth condenser 18 is taken as 95℃, and the gas temperature at the outlet side of the fifth condenser 18 is taken as 120℃, and the gas temperature at the inlet side of the third evaporator 11 is taken as 50℃. The outdoor fresh air is dehumidified by the first rotary wheel 22 to a temperature of 30℃, and is sequentially cooled by the first evaporator 3 and the fourth evaporator 15. A part of the air is dehumidified again by the second rotary wheel 23, and then is sent into the drying room 24 to dry the products or equipment. Another part of the air is combined with the return air of the drying room 24 after passing through the second rotary wheel 23 to form mixed air with a temperature of 45℃. The mixed air is heated by the third condenser 10 to a temperature of 65℃, and then is heated by the second condenser 6 to a temperature of 90℃. Finally, the mixed air is heated by the fifth condenser 18 to form high-temperature exhaust air with a temperature of 120℃ to heat the first rotary wheel 22 to reset the dehumidification capacity of the first rotary wheel 22. The temperature of the mixed air passing through the first rotary wheel 22 is reduced to 50℃, and then is cooled by the third evaporator 11 and is discharged.

[0088] It should be noted that when the fourth heat pump system is not included in the heat pump dehumidification system, the gas flow path in the dehumidification system is outdoor fresh air→the first rotary wheel 22→the first evaporator 3→the second rotary wheel 23→the drying room. When the fifth heat pump system is not included in the heat pump dehumidification system, the gas flow path in the regeneration system is the outlet side of the fourth evaporator in the dehumidification system→the second rotary wheel 23→the third condenser 10→the second condenser 6→the first rotary wheel 22→the third evaporator 11→exhaust air. When neither the fourth heat pump system nor the fifth heat pump system is included in the heat pump dehumidification system, the gas flow path in the dehumidification system is outdoor fresh air→the first rotary wheel 22→the first evaporator 3→the second rotary wheel 23, and the gas flow path in the regeneration system is the outlet side of the first evaporator in the dehumidification system→the second rotary wheel 23→the second condenser 6→the first rotary wheel 22→exhaust air.

[0089] The working principle of the heat pump dehumidification system of the present application is as follows:

[0090] The outdoor fresh air is dehumidified by the first rotary wheel 22, and is sequentially cooled by the first evaporator 3 and the fourth evaporator 15. A part of the air is dehumidified again by the second rotary wheel 23, and then is sent into the drying room 24 to dry the products or equipment. Another part of the air is combined with the return air of the drying room 24 after passing through the second rotary wheel 23 to form mixed air. The mixed air is heated by the third condenser 10, and then is sequentially heated by the second condenser 6 and the fifth condenser 18 to form high-temperature exhaust air to heat the first rotary wheel 22 to reset the dehumidification capacity of the first rotary wheel 22. The temperature of the air passing through the first rotary wheel 22 is reduced, and then is cooled by the third evaporator 11 and is discharged.

[0091] The first heat pump system can heat the refrigerant in the water tank 21 to provide a heat source for the second heat pump system, increase the evaporation temperature of the second evaporator 7, and thus increase the temperature of the gas flowing through the second condenser 6. The fourth heat pump system can heat the refrigerant in the water tank 21 to provide a heat source for the fifth heat pump system, increase the evaporation temperature of the fifth evaporator 19, and thus increase the temperature of the gas flowing through the fifth condenser 18, thereby heating the first runner 22 and ensuring the dehumidification effect of the first runner 22.

[0092] In the present application, the water tank can be a water-fluorine heat exchanger, and the first and fourth heat pump systems can heat the water in the water tank to provide a heat source for the second and fifth heat pump systems.

[0093] In addition, the present application also provides a dehumidification device, which comprises the heat pump dehumidification system described in any of the above embodiments.

[0094] Those skilled in the art can understand that the combination of features of different embodiments means to be within the scope of the present application and form different embodiments, although some embodiments described herein include certain features rather than other features included in other embodiments. For example, in the claims of the present application, any one of the claimed embodiments can be used in any combination.

[0095] So far, the technical solutions of the present application have been described in combination with the preferred embodiments shown in the drawings, but those skilled in the art can easily understand that the protection scope of the present application is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to the related technical features without departing from the principles of the present application, and the technical solutions after the changes or replacements will fall within the protection scope of the present application.

Claims

1. A heat pump dehumidification system, characterized by, The heat pump dehumidification system comprises a first heat pump system, a second heat pump system, a water tank, a first rotating wheel and a second rotating wheel; The first heat pump system comprises a first compressor, a first condenser and a first evaporator; the second heat pump system comprises a second compressor, a second condenser and a second evaporator; the first evaporator, the first compressor, the first condenser, the water tank, the second evaporator, the second compressor, the second condenser, the second evaporator, the first condenser and the first evaporator form a first refrigerant circuit in the direction of refrigerant flow; The first rotating wheel, the first evaporator and the second rotating wheel are sequentially connected in the direction of gas flow to form a dehumidification system; the second rotating wheel, the second condenser and the first rotating wheel are sequentially connected in the direction of gas flow to form a regeneration system.

2. The heat pump dehumidification system of claim 1, wherein, The dehumidification system further comprises a third heat pump system, which comprises a third compressor, a third condenser and a third evaporator; the third evaporator, the third compressor and the third condenser form a second refrigerant circuit in the direction of refrigerant flow; The third condenser is arranged on the inlet side of the regeneration system, and the third evaporator is arranged on the outlet side of the regeneration system.

3. The heat pump dehumidification system of claim 2, wherein, The third heat pump system further comprises a third throttling device, which is arranged between the third evaporator and the third condenser in the second refrigerant circuit and is arranged in parallel with the third compressor.

4. The heat pump dehumidification system of claim 3, wherein, The third throttling device is a third electronic expansion valve, a third thermal expansion valve or a third capillary tube.

5. The heat pump dehumidification system of claim 1, wherein, The heat pump dehumidification system further comprises a fourth heat pump system; The fourth heat pump system comprises a fourth compressor, a fourth condenser and a fourth evaporator; The fourth evaporator, the fourth compressor, the fourth condenser and the fourth evaporator form a third refrigerant circuit in the direction of refrigerant flow; The fourth evaporator is arranged between the first evaporator and the second rotating wheel in the dehumidification system.

6. The heat pump dehumidification system of claim 5, wherein, The fourth heat pump system further comprises a fourth throttling device, which is arranged between the fourth evaporator and the fourth condenser in the third refrigerant circuit and is arranged in parallel with the fourth compressor.

7. The heat pump dehumidification system of claim 6, wherein, The fourth throttling device is a fourth electronic expansion valve, a fourth thermal expansion valve or a fourth capillary tube.

8. The heat pump dehumidification system of claim 5, wherein, The heat pump dehumidification system further comprises a fifth heat pump system; The fifth heat pump system comprises a fifth compressor, a fifth condenser and a fifth evaporator; The fourth evaporator, the fourth compressor, the fourth condenser, the fifth evaporator, the fifth compressor, the fifth condenser, the fifth evaporator, the fourth condenser and the fourth evaporator form a fourth refrigerant circuit in the direction of refrigerant flow; The fifth condenser is arranged between the second condenser and the second rotating wheel in the regeneration system.

9. The heat pump dehumidification system of claim 8, wherein, The fifth heat pump system further comprises a fifth throttling device, which is arranged between the fourth evaporator and the fifth condenser in the fourth refrigerant circuit and is arranged in parallel with the fifth compressor.

10. The heat pump dehumidification system of claim 9, wherein, The fifth throttling device is a fifth electronic expansion valve, a fifth thermal expansion valve or a fifth capillary tube.

11. The heat pump dehumidification system of claim 8, wherein, The water tank is arranged between the fourth condenser and the fifth evaporator, so that the refrigerant flowing out of the fourth condenser can enter the fifth evaporator through the water tank.

12. The heat pump dehumidification system of claim 1, wherein, The heat pump system further comprises a drying room, which is arranged at the outlet side of the dehumidification system.

13. The heat pump dehumidification system of claim 12, wherein, The outlet side of the drying room is connected to the inlet side of the second condenser in the regeneration system.

14. The heat pump dehumidification system of claim 1, wherein, The first heat pump system further comprises a first throttling device, which is arranged between the first evaporator and the first condenser in the first refrigerant circuit, and the first throttling device is arranged in parallel with the first compressor; and / or The second heat pump system further comprises a second throttling device, which is arranged between the second evaporator and the second condenser in the first refrigerant circuit, and the second throttling device is arranged in parallel with the second compressor.

15. The heat pump dehumidification system of claim 14, wherein, The first throttling device is a first electronic expansion valve, a first thermal expansion valve or a first capillary tube; and / or The second throttling device is a second electronic expansion valve, a second thermal expansion valve or a second capillary tube.

16. The heat pump dehumidification system of claim 1, wherein, The outlet side of the dehumidification system is connected to the inlet side of the regeneration system.

17. A dehumidification apparatus, characterized by, The dehumidification device comprises the heat pump dehumidification system according to any one of claims 1-16.

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