Heat pump system applied to low-temperature dehumidification renewable energy recovery

Abstract

The utility model discloses a heat pump system applied to low-temperature dehumidification renewable energy recycling. A heat pump mechanism comprises a compressor, a dehumidification coil pipe, a dehumidification coil pipe throttling device, a heat absorption coil pipe, a heat absorption coil pipe throttling device, a proportional valve, a cooling coil pipe, a cooling coil pipe throttling device and a condensation reheating coil pipe, and the condensation reheating coil pipe comprises a fresh air channel and a regeneration air channel; energy generated in the dehumidification process of the fresh air channel and the heat absorption process of the heat absorption coil pipe is absorbed, heat is provided for the regeneration air channel through circulation of the heat pump mechanism, the functions of desorption regeneration, adsorption recovery and the like on the rotating wheel are achieved, control over the fresh air supply humidity is achieved through the combination of dehumidification of the dehumidification coil pipe and dehumidification of the rotating wheel, and the dehumidification efficiency is improved. Through regulation and control of the proportional valve, heat can be freely recycled from the dehumidification process of the dehumidification coil pipe and the heat absorption process of the heat absorption coil pipe, then the temperature of fresh air heated due to dehumidification of the rotating wheel is controlled through the cooling coil pipe, and accurate control over the air supply temperature and humidity of the fresh air is achieved, and energy is recycled and applied to regeneration of the rotating wheel.

Description

Technical Field

[0001] This application relates to the field of energy recovery heat pump system technology, specifically to a heat pump system applied to low-temperature dehumidification and regenerative energy recovery. Background Technology

[0002] With advancements in science and technology, dehumidifiers have seen significant application and development in fields such as electronics, food, pharmaceuticals, and chemicals. For handling low-humidity fresh air, the current method involves pre-dehumidifying the air using chilled water coils, followed by secondary dehumidification using a rotary dehumidifier. The fresh air after the dehumidifier needs to be cooled again by chilled water coils to maintain the desired temperature and humidity. However, the chilled water circulating in the chilled water coils requires a separate chiller unit, which consumes a large amount of electricity. The dehumidifier rotor needs continuous regeneration, currently typically achieved using steam or electric heating. Steam requires fossil fuels, while electric heating is inefficient, resulting in substantial energy waste. Summary of the Invention

[0003] To overcome the above-mentioned shortcomings, the purpose of this application is to provide a heat pump system for low-temperature dehumidification and regenerative energy recovery, thereby effectively solving the above-mentioned technical problems.

[0004] To achieve the above objectives, this application adopts the following technical solution:

[0005] This application provides a heat pump system for low-temperature dehumidification and regenerative energy recovery, comprising:

[0006] A heat pump mechanism includes a compressor, a dehumidifying coil and a dehumidifying coil throttling device, a heat-absorbing coil and a heat-absorbing coil throttling device, a proportional valve, a cooling coil and a cooling coil throttling device, and a condensing-reheating coil. The first end of the compressor is connected to the first end of the condensing-reheating coil, the second end of the condensing-reheating coil is connected to the first end of the proportional valve, and the second end of the condensing-reheating coil is connected to the first end of the cooling coil via the cooling coil throttling device. The second end of the proportional valve is connected to the first end of the dehumidifying coil via the dehumidifying coil throttling device, and the third end of the proportional valve is connected to the first end of the heat-absorbing coil via the heat-absorbing coil throttling device. The second ends of the dehumidifying coil, the heat-absorbing coil, and the cooling coil are all connected to the second end of the compressor.

[0007] The fresh air duct has a first inlet at one end and a first outlet at the second end. Based on the airflow direction within the fresh air duct, it sequentially includes a direct expansion dehumidification section, a first low-temperature rotary dehumidification section, a direct expansion cooling section, and a fresh air outlet section. The dehumidification coil throttling device and the dehumidifying coil are located within the direct expansion dehumidification section. A low-temperature dehumidification regeneration rotary wheel is located within the first low-temperature rotary dehumidification section. The cooling coil throttling device and the cooling coil are located within the direct expansion cooling section. A fresh air fan is located within the fresh air outlet section. The dehumidification coil, the low-temperature dehumidification regeneration rotary wheel, the cooling coil, and the fresh air fan are sequentially arranged and combined to form an air dehumidification structure located within the fresh air duct.

[0008] A regeneration air duct has a second inlet at one end and a second outlet at the other end. Based on the airflow direction within the regeneration air duct, it sequentially includes a direct expansion system section, a condensation reheat section, a second low-temperature dehumidification rotor section, a direct expansion heat absorption section, and a regeneration air outlet section. The compressor is located within the direct expansion system section, the condensation reheat coil is located within the condensation reheat section, and the low-temperature dehumidification regeneration rotor is also located within the regeneration air duct.

[0009] In the second low-temperature rotary dehumidification section, the heat absorption coil throttling device and the heat absorption coil are arranged in the direct expansion heat absorption section, and a regeneration air fan is arranged in the regeneration air outlet section. The condensation reheat coil, the low-temperature dehumidification regeneration rotary wheel, the heat absorption coil and the regeneration air fan are arranged and combined in sequence to form a rotary desorption regeneration air structure located in the regeneration air channel.

[0010] Furthermore, the low-temperature dehumidification and regeneration rotor is used in the fresh air duct to adsorb moisture in the air to dry the air, and in the regeneration air duct to release moisture into the air for desorption and regeneration. The first low-temperature rotor dehumidification section and the second low-temperature rotor dehumidification section share the same low-temperature dehumidification and regeneration rotor. The low-temperature dehumidification and regeneration rotor uses a polymer adsorption-desorption material, which includes a polymer adsorbent, silica gel, aluminum phosphate molecular sieve, or activated carbon.

[0011] Furthermore, the fresh air fan includes a centrifugal fan or an axial flow fan.

[0012] Furthermore, the regenerated air fan includes a centrifugal fan or an axial flow fan.

[0013] Furthermore, the compressor includes a scroll compressor, a rotary compressor, a centrifugal compressor, a piston compressor, or a screw compressor, and the compression form of the compressor includes fixed frequency or variable frequency.

[0014] Furthermore, the dehumidifying coil throttling device includes an electronic expansion valve, a thermal expansion valve, a manual expansion valve, a float-type expansion valve, or a throttling capillary tube.

[0015] Furthermore, the dehumidification coil includes a finned heat exchanger with a ventilation gap in the middle.

[0016] Furthermore, the heat absorption coil throttling device includes an electronic expansion valve, a thermal expansion valve, a manual expansion valve, a float-type expansion valve, or a throttling capillary tube.

[0017] Furthermore, the heat absorption coil includes a finned heat exchanger with a ventilation gap in the middle.

[0018] Furthermore, the proportional valve includes an electric proportional valve, a solenoid proportional valve, or an electro-hydraulic proportional valve.

[0019] Furthermore, the cooling coil throttling device includes an electronic expansion valve, a thermal expansion valve, a manual expansion valve, a float-type expansion valve, or a throttling capillary tube.

[0020] Furthermore, the cooling coil includes a finned heat exchanger with a ventilation gap in the middle.

[0021] Furthermore, the condenser reheat coil includes a finned heat exchanger with a ventilation gap in the middle.

[0022] Furthermore, the compressor, dehumidifying coil throttling device, dehumidifying coil, heat absorption coil throttling device, heat absorption coil, proportional valve, cooling coil throttling device, cooling coil, and condensing reheat coil of the heat pump mechanism are sealed and connected by copper pipes. Beneficial effects

[0023] This application provides a heat pump system for low-temperature dehumidification and regenerative energy recovery. Outdoor fresh air is dehumidified sequentially through a primary coil in the fresh air duct, then through a secondary rotor, and finally through a cooling coil, thereby achieving precise control of the fresh air supply temperature and humidity. Simultaneously, this system absorbs the energy generated during the dehumidification process in the fresh air duct and the heat absorption process in the heat absorption coil, circulating it through the heat pump mechanism to provide heat to the regeneration air duct. This avoids the use of energy from primary petrochemical conversion or inefficient electrical energy, thus achieving functions such as desorption regeneration and adsorption restoration of the rotor. The proportional valve allows for the free recovery of heat from the dehumidification process in the dehumidification coil and the heat absorption process in the heat absorption coil. Attached Figure Description

[0024] The accompanying drawings are provided to illustrate the technical solutions of this disclosure and form part of the specification. They are used together with the embodiments of this disclosure to explain the technical solutions of this disclosure and do not constitute a limitation on the technical solutions of this disclosure. The shapes and sizes of the components in the drawings do not reflect actual proportions and are only intended to illustrate the content of this application.

[0025] Figure 1 A schematic diagram of a low-temperature dehumidification and regenerative energy recovery heat pump system provided in an embodiment of this application.

[0026] In the above attached figures,

[0027] 11. Compressor; 12. Condensing reheat coil; 13. Low-temperature dehumidification regeneration rotor; 14. Heat absorption coil; 15. Heat absorption coil throttling device; 16. Proportional valve; 17. Dehumidification coil throttling device; 18. Dehumidification coil; 19. Cooling coil throttling device; 110. Cooling coil; 100. Fresh air fan; 200. Regeneration air fan;

[0028] A. Fresh air duct; A0. First inlet; A1. Direct expansion dehumidification section; A2. First low-temperature rotary dehumidification section; A3. Direct expansion cooling section; A4. Fresh air outlet section; A5. First outlet;

[0029] B. Regenerated air duct; B0. Second inlet; B1. Direct expansion system section; B2. Condensation and reheat section; B3. Second low-temperature rotor dehumidification section; B4. Direct expansion heat absorption section; B5. Regenerated air outlet section; B6. Second outlet. Detailed Implementation

[0030] The above-described solution will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of this application. The implementation conditions used in the embodiments may be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not specified are generally those in routine experiments.

[0031] Unless otherwise defined, the technical or scientific terms used in the embodiments of this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in the embodiments of this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the element or object listed following the word and its equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. In this document, "electrical connection" includes the situation where constituent elements are connected together by an element having some electrical function. There is no particular limitation on the "electrically functioning element," as long as it enables the transmission and reception of electrical signals between the connected constituent elements. An "electrically functioning element" can be, for example, an electrode or wiring, a switching element such as a transistor, or other functional elements such as a resistor, inductor, or capacitor. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0032] In this application, the terms "upper," "lower," "inner," "middle," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation. Example

[0033] One embodiment of this application provides a heat pump system for low-temperature dehumidification and regenerative energy recovery, such as... Figure 1 As shown,

[0034] The system includes a heat pump mechanism, which comprises a compressor 11, a dehumidifying coil 18 and a dehumidifying coil throttling device 17, a heat absorption coil 14 and a heat absorption coil throttling device 15, a proportional valve 16, a cooling coil 110 and a cooling coil throttling device 19, and a condensing reheat coil 12.

[0035] in:

[0036] The compressor 11 includes a scroll compressor 11, a rotary compressor 11, a centrifugal compressor 11, a reciprocating compressor 11, or a screw compressor 11, and also includes other refrigeration compression devices that can have the same function. The compression form of the compressor 11 includes fixed frequency or variable frequency.

[0037] The dehumidifying coil throttling device 17 includes an electronic expansion valve, a thermal expansion valve, a manual expansion valve, a float expansion valve, or a throttling capillary tube, and also includes other throttling devices with throttling purposes.

[0038] The dehumidification coil 18 includes a finned heat exchanger and other heat exchange and refrigeration devices with equivalent functions.

[0039] The heat absorption coil throttling device 15 includes an electronic expansion valve, a thermal expansion valve, a manual expansion valve, a float expansion valve, or a throttling capillary tube, and also includes other throttling devices with throttling purposes.

[0040] The heat absorption coil 14 includes a finned heat exchanger and other heat exchange and refrigeration devices with equivalent functions.

[0041] The proportional valve 16 includes an electric proportional valve 16, a solenoid proportional valve 16, or an electro-hydraulic proportional valve 16, and also includes other control and regulation devices with throttling purposes.

[0042] The cooling coil throttling device 19 includes an electronic expansion valve, a thermal expansion valve, a manual expansion valve, a float expansion valve, or a throttling capillary tube, and also includes other throttling devices with throttling purposes.

[0043] The cooling coil 110 includes a finned heat exchanger and other heat exchange and refrigeration devices with equivalent functions.

[0044] The condenser reheat coil 12 includes a finned heat exchanger and other heating devices for heating purposes.

[0045] The connection structure of each component of the heat pump mechanism is as follows:

[0046] The first end of the compressor 11 is connected to the first end of the condensing reheat coil 12, and the second end of the condensing reheat coil 12 is connected to the first end of the proportional valve 16. At the same time, the second end of the condensing reheat coil 12 is connected to the first end of the cooling coil 110 through the cooling coil throttling device 19. The second end of the proportional valve 16 is connected to the first end of the dehumidifying coil 18 through the dehumidifying coil throttling device 17. The third end of the proportional valve 16 is connected to the heat absorption coil 14 through the heat absorption coil throttling device 15. The second ends of the dehumidifying coil 18, the heat absorption coil 14, and the cooling coil 110 are all connected to the second end of the compressor 11. All the above components are connected by a copper pipe seal.

[0047] The system also includes a fresh air duct A, with a first inlet A0 at one end and a first outlet A5 at the other end. Based on the airflow direction within the fresh air duct A, the duct sequentially includes a direct expansion dehumidification section A1, a first low-temperature rotary dehumidification section A2, a direct expansion cooling section A3, and a fresh air outlet section A4. The dehumidification coil throttling device 17 and the dehumidification coil 18 are located within the direct expansion dehumidification section A1, and a low-temperature dehumidification regeneration rotary wheel 13 is located within the first low-temperature rotary dehumidification section A2. The low-temperature dehumidification and regeneration rotor 13 is used in the fresh air duct A to adsorb moisture in the air to dry the air. The low-temperature dehumidification and regeneration rotor 13 uses a polymer adsorption and desorption material, which includes a polymer adsorbent, silica gel, aluminum phosphate molecular sieve, or activated carbon. The cooling coil throttling device 19 and the cooling coil 110 are installed in the direct expansion cooling section A3. A fresh air fan 100 is installed in the fresh air outlet section A4. The fresh air fan 100 includes a centrifugal fan or an axial flow fan, and also includes other air supply devices that can have the same function.

[0048] The dehumidification coil 18, the low-temperature dehumidification and regeneration rotor 13, the cooling coil 110, and the fresh air fan 100 are arranged and combined in sequence to form an air dehumidification structure located in the fresh air duct A.

[0049] The regeneration air duct B has a second inlet B0 at its first end and a second outlet B6 at its second end. Based on the airflow direction within the regeneration air duct B, it sequentially includes a direct expansion system section B1, a condensing reheat section B2, a second low-temperature dehumidification rotor section B3, a direct expansion heat absorption section B4, and a regeneration air outlet section B5. The compressor 11 is located within the direct expansion system section B1, the condensing reheat coil 12 is located within the condensing reheat section B2, and the low-temperature dehumidification regeneration rotor 13 is simultaneously located within the second low-temperature dehumidification rotor section B3. The low-temperature dehumidification regeneration rotor 13 is used to release water within the regeneration air duct B. The air is separated into dry air for desorption and regeneration. The second low-temperature dehumidification section B3 shares the same low-temperature dehumidification and regeneration rotor 13 with the first low-temperature dehumidification section A2. The heat absorption coil throttling device 15 and the heat absorption coil 14 are installed in the direct expansion heat absorption section B4. A regeneration air fan 200 is installed in the regeneration air outlet section B5. The regeneration air fan includes a centrifugal fan or an axial fan, as well as other air supply devices with the same function. The condenser reheat coil 12, the low-temperature dehumidification and regeneration rotor 13, the heat absorption coil 14 and the regeneration air fan 200 are arranged and combined in sequence to form a rotor desorption and regeneration air structure located in the regeneration air channel B.

[0050] This embodiment provides a heat pump system for low-temperature dehumidification and renewable energy recovery, the specific working principle of which is as follows:

[0051] The flow rate of high-temperature and high-pressure refrigerant is precisely controlled by adjusting the channel angle through proportional valve 16 to the dehumidification coil throttling device 17. After the dehumidification coil throttling device 17 throttles and reduces the pressure, the high-temperature and high-pressure liquid refrigerant is throttled into low-temperature and low-pressure. The low-temperature and low-pressure liquid refrigerant provides cooling capacity to the dehumidification coil 18, thereby controlling the humidity content of the outdoor fresh air within the target value.

[0052] At this time, the outdoor fresh air undergoes a cooling and dehumidification process through the dehumidification coil 18, condensing the gaseous moisture in the fresh air into liquid and discharging it as low-temperature dry fresh air. Simultaneously, after passing through the dehumidification coil 18, the low-temperature, low-pressure liquid refrigerant evaporates into a low-temperature, low-pressure gaseous refrigerant, which circulates back into the compressor 11. The low-temperature, dry fresh air, after its initial cooling and dehumidification, undergoes a second adsorption and dehumidification process through the low-temperature dehumidification regeneration rotor 13, and is then heated. The heated dry fresh air passes through the cooling coil 110 and exchanges heat with the low-temperature, low-pressure liquid refrigerant after being throttled by the cooling coil throttling device 19, controlling the fresh air temperature to the target value. The cooled dry fresh air is then driven into the room by the fresh air fan 100. After the refrigerant undergoes throttling and pressure reduction before entering the cooling coil 110, the low-temperature, low-pressure liquid refrigerant evaporates into a low-temperature, low-pressure gaseous refrigerant, which circulates back into the compressor 11. Simultaneously, the compressor 11 of the heat pump mechanism draws in the refrigerant that has evaporated from the dehumidification coil 18 and the cooling coil 110 into a low-temperature, low-pressure gaseous state, and then compresses it, transforming the low-temperature, low-pressure gaseous refrigerant into a high-temperature, high-pressure gaseous refrigerant. The high-temperature, high-pressure gaseous refrigerant is then sent through a pipe to the condensing reheat coil 12. After heat exchange, the high-temperature, high-pressure gaseous refrigerant is condensed into a high-temperature, high-pressure liquid refrigerant. At this time, the outdoor fresh air in the regeneration air duct passes through the condensing reheat coil 12 and exchanges heat with the high-temperature, high-pressure gaseous refrigerant, raising its temperature to the target value. The heated regeneration fresh air undergoes desorption and regeneration through the low-temperature dehumidification regeneration rotor 13, carrying away the moisture adsorbed on the low-temperature dehumidification regeneration rotor 13, allowing the fresh air to regain its adsorption function through the low-temperature dehumidification regeneration rotor 13. Meanwhile, the high-temperature, high-pressure liquid refrigerant, condensed and cooled by the condenser-reheat coil 12, is transported through pipelines to the cooling coil throttling device 19 and the proportional valve 16. The proportional valve 16 then further distributes it to the dehumidifying coil throttling device 17 and the heat-absorbing coil throttling device 15, and the cycle repeats. The heat-absorbing coil throttling device 15 only operates when the heat provided by the dehumidifying coil 18 and the cooling coil 110 is insufficient. Through the heat-absorbing coil throttling device 15, the proportional valve 16 adjusts the channel angle to control the throttling and depressurization of the high-temperature, high-pressure liquid refrigerant to a low-temperature, low-pressure liquid refrigerant. This low-temperature, low-pressure liquid refrigerant enters the heat-absorbing coil 14, where it exchanges heat with the desorbed, regenerated, and heated humid fresh air through the low-temperature dehumidifying regeneration rotor 13. The heat-absorbing low-temperature, low-pressure liquid refrigerant evaporates into a low-temperature, low-pressure gaseous refrigerant, which then circulates back to the compressor 11. The cooled fresh air is then discharged by the regeneration fan.

[0053] In this application, the outdoor fresh air is dehumidified sequentially through the primary coil of the fresh air duct, then dehumidified by the secondary rotor, and cooled by the cooling coil 110, thereby achieving precise control of the temperature and humidity of the fresh air supply. At the same time, this system absorbs the energy generated during the dehumidification process of the fresh air duct and the heat absorption process of the heat absorption coil 14, and circulates it through the heat pump mechanism to provide heat to the regeneration air duct, avoiding the use of primary petrochemical conversion energy or inefficient electrical energy. This enables the rotor to perform desorption regeneration and restore adsorption functions. The proportional valve 16 can be used to freely recover heat from the dehumidification process of the dehumidification coil 18 and the heat absorption process of the heat absorption coil 14.

[0054] The above embodiments are only for illustrating the technical concept and features of this application, and are intended to enable those skilled in the art to understand the content of this application and implement it accordingly. They should not be used to limit the scope of protection of this application. All equivalent changes or modifications made in accordance with the spirit and essence of this application should be included within the scope of protection of this application.

Claims

1. A heat pump system applied to low-temperature dehumidification regeneration energy recovery, characterized in that: The heat pump mechanism comprises a compressor, a dehumidification coil and a dehumidification coil throttling device, a heat absorption coil and a heat absorption coil throttling device, a proportional valve, a cooling coil and a cooling coil throttling device, and a condensing reheat coil, wherein the first end of the compressor is connected with the first end of the condensing reheat coil, the second end of the condensing reheat coil is connected with the first end of the proportional valve, the second end of the condensing reheat coil is connected with the first end of the cooling coil through the cooling coil throttling device, the second end of the proportional valve is connected with the first end of the dehumidification coil through the dehumidification coil throttling device, the third end of the proportional valve is connected with the first end of the heat absorption coil through the heat absorption coil throttling device, and the second ends of the dehumidification coil, the heat absorption coil and the cooling coil are connected with the second end of the compressor. The first end of the fresh air channel is provided with a first inlet, the second end of the fresh air channel is provided with a first outlet, and according to the flow direction of air flow in the fresh air channel, the fresh air channel comprises, in sequence, a direct expansion dehumidification section, a first low-temperature rotary dehumidification section, a direct expansion cooling section and a fresh air outlet section, wherein the dehumidification coil throttling device and the dehumidification coil are arranged in the direct expansion dehumidification section, the first low-temperature rotary dehumidification section is provided with a low-temperature dehumidification and regeneration rotary wheel, the cooling coil throttling device and the cooling coil are arranged in the direct expansion cooling section, and the fresh air outlet section is provided with a fresh air fan, and the dehumidification coil, the low-temperature dehumidification and regeneration rotary wheel, the cooling coil and the fresh air fan are sequentially arranged and combined to form an air dehumidification structure in the fresh air channel. The first end of the regeneration air channel is provided with a second inlet, the second end of the regeneration air channel is provided with a second outlet, and according to the flow direction of air flow in the regeneration air channel, the regeneration air channel comprises, in sequence, a direct expansion system section, a condensing reheat section, a second low-temperature rotary dehumidification section, a direct expansion heat absorption section and a regeneration air outlet section, wherein the compressor is arranged in the direct expansion system section, the condensing reheat coil is arranged in the condensing reheat section, the low-temperature dehumidification and regeneration rotary wheel is arranged in the second low-temperature rotary dehumidification section, the heat absorption coil throttling device and the heat absorption coil are arranged in the direct expansion heat absorption section, the regeneration air outlet section is provided with a regeneration air fan, and the condensing reheat coil, the low-temperature dehumidification and regeneration rotary wheel, the heat absorption coil and the regeneration air fan are sequentially arranged and combined to form a rotary desorption and regeneration air structure in the regeneration air channel.

2. The heat pump system applied to low-temperature dehumidification and regeneration energy recovery according to claim 1, wherein: ​ The low-temperature dehumidification and regeneration runner is used for adsorbing moisture in air to dry air in the fresh air channel, and is used for releasing moisture into air to perform desorption regeneration in the regeneration air channel, the first low-temperature runner dehumidification section and the second low-temperature runner dehumidification section share the same low-temperature dehumidification and regeneration runner, the low-temperature dehumidification and regeneration runner adopts a high polymer adsorption and desorption material, and the high polymer adsorption and desorption material includes a high polymer adsorbent or silica gel or aluminum phosphate molecular sieve or activated carbon.

3. The heat pump system applied to low-temperature dehumidification and regeneration energy recovery according to claim 1, wherein: the fresh air fan comprises a centrifugal fan or an axial flow fan.

4. The heat pump system applied to low-temperature dehumidification and regeneration energy recovery according to claim 3, wherein: the regeneration air fan comprises a centrifugal fan or an axial flow fan.

5. The heat pump system applied to low-temperature dehumidification and regeneration energy recovery according to claim 1, wherein: the compressor comprises a scroll compressor or a rotary compressor or a centrifugal compressor or a piston compressor or a screw compressor, and the compression form of the compressor comprises fixed frequency or variable frequency.

6. The heat pump system applied to low-temperature dehumidification and regeneration energy recovery according to claim 1, wherein: the dehumidification coil throttling device comprises an electronic expansion valve or a thermal expansion valve or a manual expansion valve or a float ball expansion valve or a throttling capillary.

7. The heat pump system applied to low-temperature dehumidification and regeneration energy recovery according to claim 1, wherein: the dehumidification coil comprises a finned heat exchanger with ventilation gaps in the middle.

8. The heat pump system applied to low-temperature dehumidification and regeneration energy recovery according to claim 1, wherein: the heat absorption coil throttling device comprises an electronic expansion valve or a thermal expansion valve or a manual expansion valve or a float ball expansion valve or a throttling capillary.

9. The heat pump system applied to low-temperature dehumidification and regeneration energy recovery according to claim 1, wherein: the heat absorption coil comprises a finned heat exchanger with ventilation gaps in the middle.

10. The heat pump system applied to low-temperature dehumidification and regeneration energy recovery according to claim 1, wherein: the proportional valve comprises an electric proportional valve or an electromagnetic proportional valve or an electro-hydraulic proportional valve.

11. The heat pump system applied to low-temperature dehumidification and regeneration energy recovery according to claim 1, wherein: the cooling coil throttling device comprises an electronic expansion valve or a thermal expansion valve or a manual expansion valve or a float ball expansion valve or a throttling capillary.

12. The heat pump system applied to low-temperature dehumidification and regeneration energy recovery according to claim 1, wherein: the cooling coil comprises a finned heat exchanger with ventilation gaps in the middle.

13. The heat pump system applied to low-temperature dehumidification and regeneration energy recovery according to claim 1, wherein: the condensation and reheating coil comprises a finned heat exchanger with ventilation gaps in the middle.

14. The heat pump system applied to low-temperature dehumidification and regeneration energy recovery according to claim 1, wherein: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The compressor, the dehumidification coil throttling device, the dehumidification coil, the heat absorption coil throttling device, the heat absorption coil, the proportional valve, the cooling coil throttling device, the cooling coil and the condensing reheating coil of the heat pump mechanism are connected by copper pipes.

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