Heat pump dehumidification system and dehumidification equipment

Abstract

The invention relates to the technical field of dehumidification equipment, in particular to a heat pump dehumidification system and dehumidification equipment, and aims at solving the problems that in a traditional cascade heat pump system, heat transmission from a low-temperature-stage heat pump system to a high-temperature-stage heat pump system is complex, and the development difficulty is large. In order to achieve the purpose, 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, and a condenser of the first heat pump system is connected with an evaporator of the second heat pump system through the water tank, so that the first heat pump system can heat a refrigerant in the water tank and then provide a heat source for the second heat pump system; therefore, the evaporation temperature of the second heat pump system can be increased, the temperature of gas flowing through the second condenser can be increased, heat exchange between the second heat pump system and the first heat pump system can be achieved through the water tank, heat transfer from the low-temperature-stage heat pump system to the high-temperature-stage heat pump system is achieved, and heat transfer is simpler; and the development difficulty is greatly reduced.

Description

Technical Field

[0001] The invention relates to the field of dehumidification equipment, and specifically provides a heat pump dehumidification system and dehumidification equipment. Background Art

[0002] At present, various industries in the field of dehumidification equipment usually use traditional electric heating or steam heating and hot water heating as renewable energy to develop dehumidification equipment that conforms to current processes. These traditional dehumidification equipment consumes a lot of energy and is not conducive to energy conservation and emission reduction. In order to achieve energy conservation and emission reduction, a cascade heat pump system is usually used. The cascade heat pump system uses two-stage compression, and the low-temperature stage provides a heat source to the high-temperature stage, so that the high-temperature stage obtains a higher evaporation temperature, thereby achieving 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 relatively high.

[0003] Therefore, this field needs a new technical solution to solve the above problems. Summary of the invention

[0004] In order to solve at least one problem in the prior art, that is, to solve the problem that heat transfer from the low temperature stage to the high temperature stage in the traditional cascade heat pump system is relatively complicated and difficult to develop, the present application provides a heat pump dehumidification system, the heat pump dehumidification system comprising a first heat pump system, a second heat pump system, a water tank, a first rotor and a second rotor;

[0005] The heat pump dehumidification system comprises a first heat pump system, a second heat pump system, a water tank, a first rotor and a second rotor;

[0006] The first heat pump system includes a first compressor, a first condenser and a first evaporator; the second heat pump system includes 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 according to the refrigerant flow direction;

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

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

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

[0010] In the preferred technical solution of the above-mentioned heat pump dehumidification system, the third heat pump system also includes a third throttling device, which is arranged between the third evaporator and the third condenser in the second refrigerant circuit, and the third throttling device is arranged in parallel with the third compressor.

[0011] In the preferred technical solution of the above-mentioned 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 solution of the above heat pump dehumidification system, the heat pump dehumidification system further includes a fourth heat pump system;

[0013] The fourth heat pump system includes 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 according to the refrigerant flow direction;

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

[0016] In the preferred technical solution of the above-mentioned heat pump dehumidification system, the fourth heat pump system also includes a fourth throttling device, which is 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 solution of the above-mentioned 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 solution of the above heat pump dehumidification system, the heat pump dehumidification system further includes a fifth heat pump system;

[0019] The fifth heat pump system includes 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 according to the refrigerant flow direction;

[0021] The fifth condenser is disposed between the second condenser and the second rotor in the regeneration system.

[0022] In the preferred technical solution of the above-mentioned heat pump dehumidification system, the fifth heat pump system also includes a fifth throttling device, which is arranged between the fourth evaporator and the fifth condenser in the fourth refrigerant, and the fifth throttling device is arranged in parallel with the fifth compressor.

[0023] In the preferred technical solution of the above-mentioned 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 solution of the above 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 solution of the above 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 solution of the above heat pump dehumidification system, the outlet side of the drying room is connected to the inlet side of the second condenser in the regeneration system.

[0027] In the preferred technical solution of the above heat pump dehumidification system, the first heat pump system further includes 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 also includes 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.

[0029] In the preferred technical solution of the above 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 a preferred technical solution of the above-mentioned heat pump dehumidification system, the outlet side of the dehumidification system is connected to the inlet side of the regeneration system.

[0032] The present invention also provides a dehumidification device, which includes the above-mentioned heat pump dehumidification system.

[0033] Solution 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 rotor and a second rotor;

[0034] The first heat pump system includes a first compressor, a first condenser and a first evaporator; the second heat pump system includes 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 according to the refrigerant flow direction;

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

[0036] Solution 2. The heat pump dehumidification system according to Solution 1 is characterized in that 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, the third condenser and the third evaporator form a second refrigerant circuit according to the refrigerant flow direction;

[0037] The third condenser is disposed at an inlet side of the regeneration system, and the third evaporator is disposed at an outlet side of the regeneration system.

[0038] Option 3. The heat pump dehumidification system according to Option 2 is characterized in that the third heat pump system also includes a third throttling device, which is arranged between the third evaporator and the third condenser in the second refrigerant circuit, and the third throttling device is arranged in parallel with the third compressor.

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

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

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

[0042] The fourth evaporator, the fourth compressor, the fourth condenser, and the fourth evaporator form a third refrigerant circuit according to the refrigerant flow direction;

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

[0044] Scheme 6. The heat pump dehumidification system according to Scheme 5 is characterized in that the fourth heat pump system also includes a fourth throttling device, the fourth throttling device is 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.

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

[0046] Solution 8. The heat pump dehumidification system according to Solution 5, characterized in that the heat pump dehumidification system further includes a fifth heat pump system;

[0047] The fifth heat pump system includes 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 according to the refrigerant flow direction;

[0049] The fifth condenser is disposed between the second condenser and the second rotor in the regeneration system.

[0050] Solution 9. The heat pump dehumidification system according to Solution 8 is characterized in that the fifth heat pump system also includes a fifth throttling device, and the fifth throttling device is arranged between the fourth evaporator and the fifth condenser in the fourth refrigerant, 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 is characterized in that the fifth throttling device is a fifth electronic expansion valve, a fifth thermal expansion valve or a fifth capillary tube.

[0052] Solution 11. The heat pump dehumidification system according to Solution 8 is characterized in that 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] Solution 12. The heat pump dehumidification system according to Solution 1 is characterized in that the heat pump system also includes a drying room, and the drying room is arranged on the outlet side of the dehumidification system.

[0054] Solution 13. The heat pump dehumidification system according to Solution 12 is characterized in that the outlet side of the drying room is connected to the inlet side of the second condenser in the regeneration system.

[0055] Solution 14. The heat pump dehumidification system according to Solution 1 is characterized in that the first heat pump system further includes 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 also includes 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.

[0057] Solution 15. The heat pump dehumidification system according to Solution 14 is characterized in that 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 is characterized in that the outlet side of the dehumidification system is connected to the inlet side of the regeneration system.

[0060] Scheme 17. A dehumidification device, characterized in that the dehumidification device includes the heat pump dehumidification system described in any one of Schemes 1-16.

[0061] Those skilled in the art will appreciate that 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 rotor and a second rotor, wherein the condenser of the first heat pump system is connected to the evaporator of the second heat pump system via the water tank, so that the first heat pump system can heat the refrigerant in the water tank and 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 exchange heat through the water tank, thereby realizing the transfer of heat from the low-temperature stage heat pump system to the high-temperature stage heat pump system, making heat transfer simpler and greatly reducing the difficulty of development.

[0062] Furthermore, by setting up a third heat pump system, the third condenser of the third heat pump system is set at the inlet side of the regeneration system so that the gas can be condensed in stages through the secondary condenser, and the dehumidification capacity of the first rotor is reset, which greatly improves the energy efficiency and stability of the entire heat pump dehumidification system. In addition, setting the third evaporator at the outlet side of the regeneration system can reduce the temperature of the gas after passing through the first rotor.

[0063] Furthermore, by setting up a fourth heat pump system, the fourth evaporator in the fourth heat pump system is set in the dehumidification system and is set between the first evaporator and the second wheel, so that the outdoor fresh air can be cooled down by passing through the evaporator twice, thereby improving the dehumidification effect of the fresh air.

[0064] Furthermore, by providing the fourth throttling device, the throttling and pressure reduction effect can be achieved.

[0065] Furthermore, by setting up a fifth heat pump system, the fifth condenser in the fifth heat pump system is provided with a regeneration system, and is arranged between the second condenser and the second wheel, so that the gas can be condensed in stages through three condensers, thereby greatly improving the energy efficiency and stability of the entire heat pump dehumidification system.

[0066] Furthermore, by providing the fifth throttling device, the throttling and pressure reduction effect can be achieved.

[0067] Furthermore, by providing a drying room, which is arranged at the outlet side of the dehumidification system, the outdoor fresh air enters the drying room after being dehumidified, and the products or equipment in the drying room are dried. BRIEF DESCRIPTION OF THE DRAWINGS

[0068] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:

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

[0070] List of reference numerals:

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

[0072] The preferred embodiments of the present application are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present application and are not intended to limit the protection scope of the present application.

[0073] It should be noted that, in the description of the present application, terms such as "upper", "lower", "inner", "bottom", "end" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present application.

[0074] In addition, it should be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "disposed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

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

[0076] like Figure 1 As shown, in order to solve the problem that the heat transfer from the low-temperature heat pump system to the high-temperature heat pump system in the traditional cascade heat pump system is relatively complicated and difficult to develop, 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 rotor 22 and a second rotor 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 and the first evaporator 3 form a first refrigerant circuit according to the flow direction of the refrigerant. The first rotor 22, the first evaporator 3 and the second rotor 23 are connected in sequence along the gas flow direction to form a dehumidification system, and the second rotor 23, the second condenser 6 and the first rotor 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 includes two refrigerant circuits, namely the first refrigerant circuit and the second refrigerant circuit. The refrigerant flow path in the first refrigerant circuit is 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. The heat pump dehumidification system of the present application also includes a dehumidification system and a regeneration system, wherein the gas flow path in the dehumidification system is outdoor fresh air → the first rotor 22 → the first evaporator 3 → the second rotor 23, and the gas flow path in the regeneration system is the second condenser 6 → the first rotor 22 → exhaust air.

[0078] 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 rotor 22 and a second rotor 23, wherein the first and second heat pump systems both include a compressor, a condenser and an evaporator, and 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 and provide a heat source for the second heat pump system, thereby increasing the evaporation temperature of the second heat pump system, and then increasing the temperature of the gas flowing through the second condenser 6, so that the second heat pump system and the first heat pump system can achieve heat exchange through the water tank 21, and realize the heat transfer from the low-temperature heat pump system to the high-temperature heat pump system, making heat transfer simpler and greatly reducing the difficulty of development.

[0079] See below for further reference Figure 1 , a preferred implementation of the heat pump dehumidification system of the present application is introduced. Those skilled in the art will understand that the implementation described below is only used to illustrate the principle of the present application and is not intended to limit the scope of protection of the present application. On the premise that the heat pump dehumidification system includes at least a first heat pump system, a second heat pump system, a water tank 21, a first rotor 22 and a second rotor 23, those skilled in the art can adjust the following settings so that the present application can be applied to more specific application scenarios.

[0080] Reference Figure 1 In a more preferred embodiment, the heat pump dehumidification system includes 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 rotor 22 and a second rotor 23.

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

[0082] Of course, the present application is not fixed in the arrangement 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 them according to specific application scenarios. For example, the first throttling device 4 can also be a first thermal expansion valve or a first capillary tube. And / or, the second throttling device 8 can also be a second thermal expansion valve or a second capillary tube. And / or, the third throttling device 12 can also be a third thermal expansion valve or a third capillary tube. And / or, the fourth throttling device 16 can also be a fourth thermal expansion valve or a fourth capillary tube. And / or, the fifth throttling device 20 can also be a fifth thermal expansion valve or a fifth capillary tube.

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

[0084] Then see Figure 1The heat pump dehumidification system further includes a water tank 21, which is 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, that is, 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 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 throttling device 8→the second evaporator 7→the first condenser 2→the first throttling device 4→the 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 the fourth evaporator 15→the fourth compressor 13→the fourth condenser 14→the water tank 21→the fifth evaporator 19→the fifth compressor 17→the fifth condenser 18→the fifth throttling device 20→the fifth evaporator 19→the fourth condenser 14→the fourth throttling device 16→the fourth evaporator 15. In the present application, by arranging the water tank 21 between the first heat pump system and the second heat pump system, 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 those skilled in the art can select as needed. When the heat pump dehumidification system does not include the third heat pump system, the outlet side of the regeneration system is the first rotor, and the outlet side of the second rotor in the regeneration system is the second condensation system. When the heat pump dehumidification system does not include the fifth heat pump system, the refrigerant flow path in the third refrigerant circuit is the fourth evaporator 15→the fourth compressor 13→the fourth condenser 14→the fourth throttling device 16→the fourth evaporator 15. When the heat pump dehumidification system does not include the fourth heat pump system, the refrigerant flow path in the third refrigerant circuit is the refrigerant flow path is the fifth evaporator 19→the fifth compressor 17→the fifth condenser 18→the fifth throttling device 20→the fifth evaporator 19. When the heat pump dehumidification system does not include the fourth heat pump system and the fifth heat pump system, the heat pump dehumidification system does not include the third refrigerant circuit.

[0086] Then see Figure 1, the first rotor 22, the first evaporator 3, the fourth evaporator 15, the second rotor 23, and the drying room 24 are connected in sequence along the gas flow direction to form a dehumidification system, which can dehumidify the fresh air; the second rotor 22, the third condenser 10, the second condenser 6, the fifth condenser 18, the first rotor 22, and the third evaporator 11 are connected in sequence along the gas flow direction to form a regeneration system, which can reset the dehumidification capacity of the first rotor. The gas flow path in the dehumidification system is outdoor fresh air → first rotor 22 → first evaporator 3 → fourth evaporator 15 → second rotor 22 → drying room 24. The gas flow path in the regeneration system is the outlet side of the fourth evaporator 15 in the dehumidification system → second rotor 22 → third condenser 10 → second condenser 6 → fifth condenser 18 → first rotor 22 → third evaporator 11 → exhaust air. Among them, the outlet side of the fourth evaporator 15 is connected to the inlet side of the regeneration system. In the present application, after the outdoor fresh air is dehumidified once by the first rotor 22, it is cooled successively by the first evaporator 3 and the fourth evaporator 15. A part of the gas is dehumidified twice by the second rotor 23, and then sent to the drying room 24 to dry the product or equipment. The other part passes through the second rotor 23 and merges with the return air of the drying room 24 to form a mixed wind. The high-temperature exhaust air formed after the mixed wind passes through the third condenser 10, the second condenser 6 and the fifth condenser 18 in sequence heats the first rotor 22 to reset the dehumidification capacity of the first rotor 22. The temperature of the mixed wind after passing through the first rotor 22 is reduced, and it is discharged after being cooled by the third evaporator 11. The outdoor fresh air is cooled twice by the evaporator, which improves the dehumidification efficiency of the fresh air. And the mixed air is condensed by three condensers, which greatly improves the energy efficiency and stability of the entire dehumidification system. Finally, the mixed wind provides a higher evaporation temperature for the third heat pump system, which once again improves the energy efficiency of the third heat pump system.

[0087] In order to facilitate intuitive understanding of the changes in gas temperature during the gas flow process, the gas temperature on the inlet side of the first evaporator 3 is 30°C, the temperature of the mixed air on the inlet side of the third condenser 10 is 45°C, the gas temperature on the inlet side of the second condenser 6 is 65°C, the gas temperature on the inlet side of the fifth condenser 18 is 95°C, the gas temperature on the outlet side is 120°C, and the gas temperature on the inlet side of the third evaporator 11 is 50°C. After the outdoor fresh air is dehumidified once by the first rotor 22, the temperature reaches 30°C, and then it is cooled by the first evaporator 3 and the fourth evaporator 15 in sequence. A part of it is dehumidified twice by the second rotor 23, and then sent to the drying room 24 to dry the product or equipment. The other part of it is combined with the return air of the drying room 24 after passing through the second rotor 23 to form a mixed air of 45°C. The mixed air is heated to 65°C by the third condenser 10, and then passes through the second condenser 6 to heat the mixed air to 90°C. Finally, it passes through the fifth condenser 18 to form a high-temperature exhaust air of 120°C to heat the first rotor 22 to reset the dehumidification capacity of the first rotor 22. The temperature of the mixed air after passing through the first rotor 22 is reduced to 50°C, and then it is cooled by the third evaporator 11 and discharged.

[0088] It should be noted that when the heat pump dehumidification system does not include the fourth heat pump system, the gas flow path in the dehumidification system is outdoor fresh air → first rotor 22 → first evaporator 3 → second rotor 23 → drying room. When the heat pump dehumidification system does not include the fifth heat pump system, the gas flow path in the regeneration system is the outlet side of the fourth evaporator in the dehumidification system → second rotor 23 → third condenser 10 → second condenser 6 → first rotor 22 → third evaporator 11 → exhaust air. When the heat pump dehumidification system does not include the fourth heat pump system and the fifth heat pump system, the gas flow path in the dehumidification system is outdoor fresh air → first rotor 22 → first evaporator 3 → second rotor 23, and the gas flow path in the regeneration system is the outlet side of the first evaporator in the dehumidification system → second rotor 23 → second condenser 6 → first rotor 22 → exhaust air.

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

[0090] The outdoor fresh air is dehumidified once by the first rotor 22, and then cooled by the first evaporator 3 and the fourth evaporator 15 in sequence. After that, a part of it is dehumidified twice by the second rotor 23, and then sent to the drying room 24 to dry the product or equipment. The other part of it is combined with the return air of the drying room 24 after passing through the second rotor 23 to form a mixed wind. After the mixed wind is heated by the third condenser 10, it is heated by the second condenser 6 and the fifth condenser 18 in sequence to form high-temperature exhaust air to heat the first rotor 22 to reset the dehumidification capacity of the first rotor 22. The gas temperature decreases after passing through the first rotor 22, and is cooled by the third evaporator 11 before being discharged.

[0091] The first heat pump system can heat the refrigerant in the water tank 21, 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, 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, so as to heat the first rotor 22 and ensure the dehumidification effect of the first rotor 22.

[0092] Among them, the water tank in the present application can be a water-fluorine heat exchanger, and the first and fourth heat pump systems can heat the water in the water tank, thereby providing a heat source for the second and fifth heat pump systems.

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

[0094] Those skilled in the art will appreciate that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present application and form different embodiments. For example, in the claims of the present application, any one of the claimed embodiments may be used in any combination.

[0095] So far, the technical solutions of the present application have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments. Without departing from the principles of the present application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present application.

Claims

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 rotor and a second rotor; The first heat pump system includes a first compressor, a first condenser and a first evaporator; the second heat pump system includes 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 according to the refrigerant flow direction; The first wheel, the first evaporator, and the second wheel are sequentially connected along the gas flow direction to form a dehumidification system, and the second wheel, the second condenser, and the first wheel are sequentially connected along the gas flow direction to form a regeneration system.

2. The heat pump dehumidification system according to claim 1, characterized in that: The dehumidification system further includes a third heat pump system, the third heat pump system includes a third compressor, a third condenser and a third evaporator; the third evaporator, the third compressor, the third condenser and the third evaporator form a second refrigerant circuit according to the refrigerant flow direction; The third condenser is disposed at an inlet side of the regeneration system, and the third evaporator is disposed at an outlet side of the regeneration system.

3. The heat pump dehumidification system according to claim 2, characterized in that: The third heat pump system also includes a third throttling device, which is arranged between the third evaporator and the third condenser in the second refrigerant circuit, and the third throttling device is arranged in parallel with the third compressor.

4. The heat pump dehumidification system according to claim 3, characterized in that: 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 according to claim 1, characterized in that: The heat pump dehumidification system further includes a fourth heat pump system; The fourth heat pump system includes 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 according to the refrigerant flow direction; The fourth evaporator is disposed between the first evaporator and the second wheel in the dehumidification system.

6. The heat pump dehumidification system according to claim 5, characterized in that: The fourth heat pump system also includes a fourth throttling device, which is 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.

7. The heat pump dehumidification system according to claim 6, characterized in that: 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 according to claim 5, characterized in that: The heat pump dehumidification system further includes a fifth heat pump system; The fifth heat pump system includes 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 according to the refrigerant flow direction; The fifth condenser is disposed between the second condenser and the second rotor in the regeneration system.

9. The heat pump dehumidification system according to claim 8, characterized in that: The fifth heat pump system also includes a fifth throttling device, which is arranged between the fourth evaporator and the fifth condenser in the fourth refrigerant, and the fifth throttling device is arranged in parallel with the fifth compressor.

10. The heat pump dehumidification system according to claim 9, characterized in that: The fifth throttling device is a fifth electronic expansion valve, a fifth thermal expansion valve or a fifth capillary tube.

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