Dehumidification energy-saving device suitable for heat pump unit and control method thereof

Abstract

The application discloses a dehumidification energy-saving device suitable for a heat pump unit and a control method thereof. The dehumidification energy-saving device comprises a control unit and a circulation loop formed by connecting a condenser, a compressor, an evaporator and an expansion valve through refrigerant pipes. The condenser is arranged at an entrance of an installation environment. The evaporator has an inner flow channel and an outer flow channel. The inner flow channel is connected to the installation environment through a suction pipe. The outer flow channel is located in an external environment. The inner flow channel is connected to a dehumidifier through a dehumidification pipe. The dehumidifier is connected to the condenser through an air outlet pipe. The dehumidification pipe is provided with an air outlet pipe. The air outlet pipe is provided with an air inlet pipe. The air inlet pipe is provided with an air detection device. A heat exchanger is arranged between the suction pipe and the air outlet pipe. The heat exchanger has a first flow channel and a second flow channel, and is used for heat exchange of fluids in the first flow channel and the second flow channel. The control unit can control opening and closing of each pipe according to a detection result of the air detection device. The dehumidification energy-saving device provided by the application consumes less energy.

Description

Technical Field

[0001] This invention relates to the field of heat pump unit technology, and more specifically to a dehumidification and energy-saving device and its control method applicable to heat pump units. Background Technology

[0002] Heat pump exhaust heat recovery technology utilizes indoor exhaust air to condense or evaporate the refrigerant in a heat exchanger, thereby recovering energy from the exhaust air. Heat pump heat recovery systems employing this technology can reduce the energy consumption of the unit's compressor and avoid cross-infection caused by traditional exhaust heat recovery methods, improving indoor air quality while saving energy.

[0003] Heat pump exhaust heat recovery technology is widely used in industrial, commercial, and building sectors. Examples include agricultural product processing in industry and the construction of ventilated spaces such as hospitals and shopping mall complexes in the building sector.

[0004] Existing heat pump exhaust heat recovery systems operate in a relatively simple mode. They typically consist of two parts: an exhaust-side heat exchanger and a fresh air-side heat exchanger. The exhaust-side heat exchanger generally acts as an evaporator, absorbing low-grade heat from the exhaust air to vaporize the refrigerant, while the fresh air-side heat exchanger acts as a condenser, transferring the heat released by the refrigerant to the fresh air, thus achieving energy recovery. Existing heat pump exhaust heat recovery systems operate according to this mode regardless of the external ambient temperature (the temperature of the air entering the room from outside).

[0005] The aforementioned heat pump exhaust heat recovery system cannot be adjusted to different degrees according to different operating conditions. This leads to the frequent starting and stopping of the compressor in the heat pump exhaust heat recovery system. The frequent starting of the compressor results in a large energy consumption of the heat pump exhaust heat recovery system. Summary of the Invention

[0006] This invention provides a dehumidification and energy-saving device and its control method suitable for heat pump units, which consumes less energy and is more energy-efficient.

[0007] The dehumidification and energy-saving device and its control method for heat pump units of the present invention adopt the following technical solution:

[0008] A dehumidification and energy-saving device suitable for heat pump units includes a condenser, compressor, evaporator, and expansion valve connected sequentially via refrigerant pipes. The condenser is located at the inlet of the installation environment. The evaporator has independent internal and external flow channels. One end of the internal flow channel is connected to the outlet of the installation environment via a suction pipe, and the external flow channel is located in the external environment. The other end of the evaporator's internal flow channel is connected to a dehumidifier via a dehumidification pipe. The other end of the dehumidifier is connected to one end of the condenser via an outlet pipe. The other end of the condenser is connected to the installation environment. An exhaust pipe is connected to the wet pipe, and the other end of the exhaust pipe is connected to the external environment. An intake pipe is connected to the outlet pipe, and the other end of the intake pipe is connected to the external environment. An air detection device is installed on the intake pipe. A heat exchanger is installed between the intake pipe and the outlet pipe. The heat exchanger has a first flow channel and a second flow channel. Pipes A and B are connected to the two ends of the first flow channel, and pipes C and D are connected to the two ends of the second flow channel, respectively. Pipes A and B are connected to the outlet pipe through pipes I and II, respectively. Pipes C and D are connected to the intake pipe through pipes III and IV, respectively.

[0009] Control valves are installed in the suction pipe, external flow channel, dehumidification pipe, outlet pipe, exhaust pipe, inlet pipe, pipe A, pipe B, pipe C, pipe D, pipe I, pipe II, pipe III, and pipe IV. The control valve of the suction pipe is located between the connection position of pipe III to the suction pipe and the connection position of pipe IV to the suction pipe. The control valve of the dehumidification pipe is located between the connection position of the exhaust pipe to the dehumidification pipe and the dehumidifier. The control valve of the outlet pipe is located between the connection position of pipe I to the outlet pipe and the connection position of pipe II to the outlet pipe. The control valves of pipes A, B, C, and D are located at the ends furthest from the heat exchanger. When the control valves of pipes A, B, C, and D are open, pipes A, B, C, and D are directly connected to the external environment.

[0010] It also includes a control unit, which can control the opening and closing of the control valve based on the detection results of the air detection device.

[0011] Furthermore, the dehumidifier includes a housing, a rotating bracket, and a moisture-absorbing paper curtain. The housing has an air inlet and an air outlet. The air inlet is connected to the dehumidification pipe, and the air outlet is connected to the air outlet pipe. The rotating bracket is rotatably installed inside the housing. The moisture-absorbing paper curtain has multiple pieces, which are arranged at equal angular intervals around the rotation center axis of the rotating bracket.

[0012] The housing contains a first driving component, which is used to drive the rotating bracket to rotate.

[0013] Furthermore, the moisture-absorbing paper curtain is inclined, and the inclination direction of the moisture-absorbing paper curtain is biased towards the rotation direction of the rotating bracket.

[0014] Furthermore, the housing is provided with a guide fan and a second driving component. The second driving component is used to drive the guide fan to rotate. The guide fan is used to accelerate the air through the rotating bracket and discharge it from the air outlet into the housing.

[0015] A dehumidification and energy-saving control method suitable for heat pump units, applied to the aforementioned dehumidification and energy-saving device suitable for heat pump units, includes the following steps:

[0016] S1: The type of air in the external environment entering the dehumidification and energy-saving device is detected by the air detection device;

[0017] S2: Control the operation of the dehumidification and energy-saving device according to the type of air in the external environment to reduce the energy consumption of the dehumidification and energy-saving device;

[0018] Step S2 includes the following cases:

[0019] S2.1: When the air in the external environment is clean and hot, the first working process is activated to reduce the energy consumption of the compressor in the dehumidification energy-saving device. The first working process is as follows: the control valves in the inlet pipe, outlet pipe and exhaust pipe are opened by the control unit. The air in the external environment enters the outlet pipe from the inlet pipe and is introduced into the condenser. After the condenser releases heat, the air is heated. The heated air is introduced into the installation environment. After passing through the installation environment, the air enters the inner flow channel of the evaporator through the suction pipe. After the evaporator absorbs heat from the air, the air is discharged to the external environment through the exhaust pipe.

[0020] S2.2: When the ambient air is clean and low-temperature air, the second working process is activated to reduce the energy consumption of the compressor in the dehumidification energy-saving device. The second working process is as follows: the control valves in pipes A, II, III, IV, the outlet pipe, and the exhaust pipe are opened by the control unit. The ambient air is introduced into pipe A as a cold fluid. After flowing through the first flow channel of the heat exchanger, it flows through pipes B, II, and the outlet pipe in sequence, and then into the condenser through the outlet pipe. After the condenser releases heat, the air is heated. The heated air is introduced into the installation environment. The air in the installation environment enters the suction pipe as a hot fluid, and then enters the second flow channel of the heat exchanger through pipes III and C. After the hot fluid passes through the second flow channel, it enters the inner flow channel of the evaporator through pipes D and IV and the suction pipe. After the evaporator absorbs heat from the air, the air is discharged to the ambient environment through the exhaust pipe.

[0021] S2.3: When the external air is turbid and hot, the third working process is activated to reduce the energy consumption of the compressor in the dehumidification energy-saving device. The third working process includes the first external process and the first internal process. The control valves in the suction pipe, dehumidification pipe, pipe I, pipe II, pipe C and pipe D are opened by the control unit.

[0022] The first external process is as follows: the air from the external environment is configured as a hot fluid and introduced into pipe C. After flowing through the second flow channel of the heat exchanger, it is discharged to the external environment from pipe D.

[0023] The first internal flow is as follows: Air in the installation environment is introduced into the inner flow channel of the evaporator through the suction pipe. After the evaporator absorbs heat from the air, the air is introduced into the dehumidifier through the dehumidification pipe. The dehumidifier dehumidifies the air. The dehumidified air is configured as a cold fluid and enters the outlet pipe, pipe II, and pipe B in sequence and then enters the first flow channel of the heat exchanger. After the air as a cold fluid passes through the first flow channel, it enters the pipe A, pipe I, and outlet pipe in sequence and then enters the condenser. After the condenser releases heat, the air is heated. The heated air is then introduced into the installation environment to start a new cycle.

[0024] S2.4: When the external air is turbid and low temperature air, the fourth working process is run to reduce the energy consumption of the compressor in the dehumidification energy-saving device. The fourth working process includes the second external process and the second internal process. The control valves in the suction pipe, dehumidification pipe, air outlet pipe and external flow channel are opened by the control unit.

[0025] The second external process is as follows: air is introduced into the external flow channel of the evaporator, and after the evaporator absorbs heat from the air, it discharges the air to the external environment;

[0026] The second internal process is as follows: Air in the installation environment is introduced into the inner flow channel of the evaporator through the suction pipe. After the evaporator absorbs heat from the air, it introduces the air into the dehumidifier through the dehumidification pipe. The dehumidifier dehumidifies the air. The dehumidified air is then introduced into the condenser through the outlet pipe. After the condenser releases heat, the air is heated. The heated air is then introduced into the installation environment for a new cycle.

[0027] Furthermore, the second external flow and the second internal flow share the same evaporator, and the evaporator is provided with a baffle plate that divides the flow channels of the evaporator into the external flow channel and the internal flow channel.

[0028] The beneficial effects of this invention are:

[0029] This invention uses an air detection device to detect the type of air, and a control unit can control the opening and closing of various pipes according to the type of air, giving the invention multiple working modes.

[0030] When the ambient air is hot and clean, the control unit opens the intake pipe, exhaust pipe, and discharge pipe. As the ambient air passes through the condenser, because the temperature difference between the ambient air and the target temperature is small, the ambient air requires less heat. Therefore, the condenser can release less heat to raise the ambient air to the target temperature, thereby reducing the compressor's operating power. Reduced compressor operating power means less energy consumption, thus reducing the energy consumption of this invention.

[0031] When the ambient air is low-temperature and clean, the control unit opens the control valves in pipes A, II, the outlet pipe, the intake pipe, III, IV, and the exhaust pipe. Air flowing from the installation environment (agricultural processing area) passes through the second flow channel of the heat exchanger, where it exchanges heat with the low-temperature air flowing through the first flow channel, heating the air before it enters the condenser and reducing the temperature difference with the target temperature. Consistent with the above scenario when the ambient air is high-temperature, the compressor's operating energy consumption is reduced, thus lowering the energy consumption of this invention.

[0032] When the external ambient air is hot and turbid, the control unit opens the control valves in the suction pipe, dehumidification pipe, pipe I, pipe II, pipe C, and pipe D. The air in the installation environment, cooled by the evaporator and dehumidified by the dehumidifier, exchanges heat with the high-temperature external gas entering the second flow channel as it flows through the first flow channel of the heat exchanger. This reheats the air exiting the installation environment. The heated air, when passing through the condenser, has a smaller temperature difference from the target temperature, thus reducing the compressor's operating power and energy consumption, thereby lowering the energy consumption of this invention.

[0033] When the ambient air is low temperature and turbid, the control unit opens the suction pipe, external flow channel, dehumidification pipe and air outlet pipe; the low temperature air from outside that enters the evaporator can accelerate the evaporation of the refrigerant in the evaporator together with the air in the installation environment of the evaporator, which can reduce the operating load of the compressor and thus reduce the energy consumption of the compressor.

[0034] This invention integrates open-loop (when the external air is clean, the air flows through the invention) and closed-loop (when the external air is turbid, the air flows through the invention). This not only comprehensively reduces energy consumption when the invention is applied to agricultural product processing, but also ensures that the gas in the installation environment cannot exchange with the outside environment when the invention is running in closed-loop mode. This guarantees the independence of the external and installation environments, making the invention applicable to a wider range of situations.

[0035] Furthermore, when air passes through the dehumidifier, after entering the casing through the air inlet, the moisture carried by the air is absorbed by the moisture-absorbing paper curtain as it passes through, achieving the purpose of dehumidifying the air. At the same time, as the moisture-absorbing paper curtain rotates with the rotating bracket, it can also throw out the absorbed moisture, reducing the probability of moisture flowing into the cylindrical cavity in the middle of the annular plate, making the dehumidifier's dehumidification effect better. Moreover, the inclined moisture-absorbing paper curtain can form a toothed / spoon-like structure, and when the moisture-absorbing paper curtain rotates, it can "scoop" more air from inside the casing into the gaps of the moisture-absorbing paper curtain, which can accelerate the dehumidification of the air.

[0036] The control method for the dehumidification and energy-saving device applicable to heat pump units can be implemented by simply following the data measured by the air detection device. The process is clear and easy to operate. This control method can reduce the energy consumption of the present invention. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of the overall structure of a dehumidification and energy-saving device suitable for heat pump units provided in an embodiment of the present invention;

[0039] Figure 2 A front view of a dehumidification and energy-saving device suitable for heat pump units provided in an embodiment of the present invention;

[0040] Figure 3 A top view of a dehumidification and energy-saving device suitable for heat pump units provided in an embodiment of the present invention;

[0041] Figure 4 This is a schematic diagram of the structure of the evaporator in a dehumidification and energy-saving device suitable for heat pump units provided in an embodiment of the present invention;

[0042] Figure 5 A front view of the evaporator in a dehumidification and energy-saving device suitable for heat pump units provided in an embodiment of the present invention;

[0043] Figure 6 for Figure 5 A schematic diagram of the cross-sectional structure along the AA direction;

[0044] Figure 7 This is a schematic diagram of the dehumidifier in a dehumidification and energy-saving device suitable for heat pump units provided in an embodiment of the present invention;

[0045] Figure 8 A side view of the dehumidifier in a dehumidification and energy-saving device suitable for heat pump units provided in an embodiment of the present invention;

[0046] Figure 9 for Figure 8 Schematic diagram of cross-sectional structure along the BB direction;

[0047] Figure 10 for Figure 8 Schematic diagram of cross-sectional structure in the CC direction.

[0048] In the diagram: 10, refrigerant pipe; 100, condenser; 110, outlet pipe; 1101, inlet pipe; 111, pipe I; 112, pipe II; 200, compressor; 210, dehumidifier pipe; 211, exhaust pipe; 300, evaporator; 301, internal flow channel; 302, external flow channel; 310, suction pipe; 311, pipe III; 312, pipe IV; 320, baffle plate; 400, expansion valve; 500, dehumidifier; 510, casing; 511, air inlet; 512, air outlet; 520, rotating bracket; 530, moisture-absorbing paper curtain; 540, first drive unit; 550, guide fan; 560, second drive unit; 600, heat exchanger; 611, pipe A; 612, pipe B; 621, pipe C; 622, pipe D. Detailed Implementation

[0049] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0050] The component designations used in this document, such as "first" and "second," are merely for distinguishing the described objects and do not have any sequential or technical meaning. The terms "connection" and "linkage" used in this invention, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0051] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0052] The following reference Figures 1 to 10The present invention describes a dehumidification and energy-saving device suitable for heat pump units, comprising a condenser 100, a compressor 200, an evaporator 300, and an expansion valve 400 connected by a refrigerant pipe 10. The condenser 100, compressor 200, evaporator 300, and expansion valve 400 connected by the refrigerant pipe 10 can form a circulation loop, thus forming an existing heat pump unit.

[0053] When the heat pump unit is working, the gaseous refrigerant in the refrigerant pipe 10 is compressed into a high-temperature, high-pressure gas by the compressor 200 when it passes through the compressor 200. The high-temperature, high-pressure gaseous refrigerant releases heat to the external environment when it passes through the condenser 100 and condenses into a high-pressure liquid. The high-pressure liquid refrigerant is depressurized into a low-temperature, low-pressure liquid (or gas-liquid mixture) refrigerant when it passes through the expansion valve 400. The low-temperature, low-pressure liquid refrigerant absorbs heat from the external environment when it passes through the evaporator 300 and then evaporates into a low-temperature, low-pressure gaseous refrigerant. The low-temperature, low-pressure gaseous refrigerant is recompressed into a high-temperature, high-pressure gaseous refrigerant after passing through the compressor 200, and then a new cycle begins.

[0054] The condenser 100 is located at the inlet of the installation environment, and its outlet is open to the installation environment. The evaporator 300 has an independent inner flow channel 301 and an outer flow channel 302. One end of the inner flow channel 301 is connected to the outlet of the installation environment through a suction pipe 310, and the outer flow channel 302 is located in the external environment. The other end of the inner flow channel 301 of the evaporator 300 is connected to a dehumidifier 500 through a dehumidification pipe 210, and the other end of the dehumidifier 500 is connected to the inlet of the condenser 100 through an outlet pipe 110.

[0055] It should be noted that the installation environment described above can be a home, an entertainment venue, or an area suitable for agricultural product processing. Furthermore, both the external air and the air within the installation environment must have suitable humidity.

[0056] The dehumidification pipe 210 is connected to an exhaust pipe 211 that leads to the external environment. The other end of the exhaust pipe 211 is connected to the external environment. The air outlet pipe 110 is connected to an air inlet pipe 1101 that is connected to the external environment. The other end of the air inlet pipe 1101 is connected to the external environment. An air detection device is provided on the air inlet pipe 1101. The air detection device is used to detect the type and temperature of the gas in the external environment.

[0057] The air detection device has predetermined values ​​when detecting the air in the external environment, including a predetermined temperature and a predetermined cleanliness level. When the air temperature in the external environment exceeds the predetermined temperature, it is considered high-temperature air; when it is below the predetermined temperature, it is considered low-temperature air. It should be noted that in this invention, the temperature of the low-temperature air must be higher than the temperature of the liquid refrigerant.

[0058] The predetermined cleanliness level has two predetermined indicators: PM2.5 concentration and toxic gas content. When the PM2.5 concentration or toxic gas content in the external environment exceeds either predetermined indicator, it is considered turbid air; when it is below both the predetermined PM2.5 and toxic gas content indicators, it is considered clean air.

[0059] A heat exchanger 600 is provided between the intake pipe 310 and the outlet pipe 110. The heat exchanger 600 has a first flow channel and a second flow channel, which are connected in parallel with the outlet pipe 110 and the intake pipe 310, respectively. The two ends of the first flow channel are connected to pipe A 611 and pipe B 612, respectively, and the two ends of the second flow channel are connected to pipe C 621 and pipe D 622, respectively. Pipe A 611 and pipe B 612 are connected to the outlet pipe 110 through pipe I 111 and pipe II 112, respectively, and pipe C 621 and pipe D 622 are connected to the intake pipe 310 through pipe III 311 and pipe IV 312, respectively.

[0060] The present invention also includes a control unit, which can control the opening and closing of the above-mentioned pipes according to the detection results of the air detection device. Specifically, each of the above-mentioned pipes, namely the intake pipe 310, the external flow channel 302, the dehumidification pipe 210, the air outlet pipe 110, the exhaust pipe 211, the air inlet pipe 1101, pipe A 611, pipe B 612, pipe C 621, pipe D 622, pipe I 111, pipe II 112, pipe III 311 and pipe IV 312, is equipped with a control valve. The control valve of the suction pipe 310 is located between the connection positions of pipe III 311 and pipe IV 312 on the suction pipe 310. The control valve of the dehumidification pipe 210 is located between the connection position of the exhaust pipe 211 on the dehumidification pipe 210 and the dehumidifier 500. The control valve of the exhaust pipe 110 is located between the connection positions of pipe I 111 and pipe II 112 on the exhaust pipe 110. The control valves of pipes A 611, B 612, C 621, and D 622 are located at the ends furthest from the heat exchanger 600, and when the control valves of pipes A 611, B 612, C 621, and D 622 are open, pipes A 611, B 612, C 621, and D 622 are directly connected to the external environment. The control unit can be a circuit board integrating multiple switches, and the control valves of each of the above-mentioned pipes correspond to the multiple switches on the circuit board and are electrically connected to the corresponding switches.

[0061] In this invention, an air detection device can classify the air in the external environment into high-temperature clean air, low-temperature clean air, high-temperature polluted air, and low-temperature polluted air. By controlling the opening and closing of the aforementioned pipes through a control unit, this invention can be applied to environments with high air quality requirements, such as homes, workshops, and agricultural product processing areas.

[0062] The operating principle of this invention is as follows:

[0063] Here, we take an agricultural product processing area as an example of the installation environment. When this invention is applied to the processing of agricultural products, there are certain requirements for temperature during the processing of agricultural products. Only when the target temperature is reached can the processing effect of agricultural products be better.

[0064] When the present invention is in operation, firstly, the condenser 100 of the present invention is installed at the air inlet end of the agricultural product processing area, and the suction pipe 310 is connected to the air outlet end of the agricultural product processing area. Then, according to the type of air detected by the air detection device, the control unit controls the opening and closing of each pipe to reduce the energy consumption of the present invention during operation.

[0065] For example, when the air detection device detects that the outside air is high-temperature and clean, the control unit opens the control valves in the intake pipe 1101, outlet pipe 110, suction pipe 310, and exhaust pipe 211, and closes the control valves in other pipes (except for refrigerant pipe 10). Outside air enters through the intake pipe 1101, flows through the outlet pipe 110, condenser 100, agricultural product processing area, suction pipe 310, evaporator 300, and finally exits through the exhaust pipe 211. When the outside air passes through the condenser 100, because the temperature difference between the outside air and the target temperature is small, the outside air requires less heat. Therefore, the condenser 100 needs to release less heat to the outside air, which reduces the operating power of the compressor 200 when compressing the refrigerant, resulting in lower energy consumption and thus reducing the energy consumption of the invention. Furthermore, since the outside air is clean air, it can be directly introduced into the agricultural product processing area without adversely affecting the agricultural products in the processing area. In addition, the dehumidifier 500 does not participate in the operation during this process, which can further reduce the energy consumption of the present invention.

[0066] When the air detection device detects that the outside air is low-temperature and clean, the control unit opens the control valves in pipes A 611, II 112, outlet pipe 110, intake pipe 310, III 311, IV 312, and exhaust pipe 211, and closes the control valves in other pipes (except refrigerant pipe 10). Outside air, as a cold fluid, enters pipe A 611, flows through the first flow channel, pipe B 612, II 112, outlet pipe 110, condenser 100, agricultural product processing area, the portion of intake pipe 310 connected to the agricultural product processing area, III 311, C 621, second flow channel, D 622, IV 312, the portion of intake pipe 310 connected to IV 312, evaporator 300, and finally exits from exhaust pipe 211 connected to dehumidification pipe 210. In this process, the air flowing out of the agricultural product processing area can exchange heat with the low-temperature external air flowing through the first flow channel of the heat exchanger 600 as it passes through the second flow channel of the heat exchanger 600. This heats the external air before it enters the condenser 100, thereby reducing the temperature difference between the external air and the target temperature. Similar to the case where the external air is high-temperature air, the operating power of the compressor 200 is reduced, thus lowering its energy consumption. Furthermore, since the external air is clean, even if the air passing through the condenser 100 is directly introduced into the agricultural product processing area, it will not adversely affect the agricultural products. In addition, the dehumidifier 500 does not participate in this process, further reducing the energy consumption of the invention and making it more energy-efficient.

[0067] When the air detection device detects that the outside air is hot and turbid, the control unit opens the control valves in the suction pipe 310, dehumidification pipe 210, pipe I 111, pipe II 112, pipe C 621, and pipe D 622, and closes the control valves in other pipes (except for refrigerant pipe 10). The outside air is introduced into pipe C 621 as a hot fluid, and after flowing through the second flow channel of heat exchanger 600, it is discharged from pipe D 622. The air in the agricultural product processing area flows sequentially through suction pipe 310, evaporator 300, dehumidification pipe 210, and dehumidifier 500. After flowing through dehumidifier 500, it is introduced into the first flow channel of heat exchanger 600 as a cold fluid from outlet pipe 110, through pipe II 112 and pipe B 612, and after flowing through the first flow channel, it re-enters outlet pipe 110 through pipe A 611 and pipe I 111, and finally passes through condenser 100 and re-enters the agricultural product processing area. In this process, the air in the agricultural product processing area, cooled by the evaporator 300 and dehumidified by the dehumidifier 500, can exchange heat with the high-temperature external gas entering the second flow channel when flowing through the first flow channel of the heat exchanger 600. This reheats the air in the agricultural product processing area. When the heated air in the agricultural product processing area passes through the condenser 100, similar to the situation when the high-temperature gas enters the condenser 100, the compressor 200 does not need to operate at high power. The air flowing out of the agricultural product processing area can be heated to the target temperature by the condenser 100, thereby reducing the energy consumption of the compressor 200 and lowering the energy consumption of this invention. Furthermore, since the external air is turbid, it only plays a role in heat exchange in this invention and does not enter the agricultural product processing area, thus preventing damage to the agricultural products.

[0068] When the air detection device detects that the outside air is low-temperature and turbid, the control unit opens the control valves in the suction pipe 310, the external flow channel 302, the dehumidification pipe 210, and the outlet pipe 110, and closes the control valves in other pipes (except for the refrigerant pipe 10). The low-temperature air in the external environment is introduced into the external flow channel 302 of the evaporator 300 and discharged to the external environment. The air originally present in the agricultural product processing room flows sequentially through the suction pipe 310, the internal flow channel 301 of the evaporator 300, the dehumidification pipe 210, the dehumidifier 500, the outlet pipe 110, and the condenser 100, and is then introduced back into the agricultural product processing area. During this process, the low-temperature external air introduced into the evaporator 300 accelerates the cooling of the refrigerant inside the evaporator 300. When the air in the agricultural product processing area passes through the evaporator 300, the temperature difference between the air and the evaporator 300 is greater, further increasing the rate at which the refrigerant in the evaporator 300 absorbs heat. Simultaneously, this reduces the workload of the compressor 200, lowering its energy consumption and thus reducing the energy consumption of the invention. Since the external ambient gas only accelerates the cooling of the refrigerant in the evaporator 300 and does not enter the agricultural product processing area, it will not damage the agricultural products.

[0069] In summary, in this invention, the control unit can control the opening and closing of multiple pipes according to the type of air in the external environment, enabling the invention to have multiple working modes and achieve the integration of open-loop (external air is clean air) and closed-loop (external air is turbid air), which can more comprehensively reduce the energy consumption when the invention is applied in the installation environment.

[0070] In some embodiments, the dehumidifier 500 includes a housing 510, a rotating bracket 520, and a moisture-absorbing paper curtain 530. The housing 510 may be a cylindrical hollow structure with an air inlet 511 and an air outlet 512. The air inlet 511 is located on the side wall of the housing 510 and is connected to the end of the dehumidification pipe 210 away from the evaporator 300. The air outlet 512 is coaxially disposed on the top of the housing 510 and is connected to the end of the outlet pipe 110 away from the condenser 100.

[0071] The rotating bracket 520 is rotatably mounted within the housing 510. The rotating bracket 520 can be a cylindrical frame formed by multiple connecting rods connecting two coaxial annular plates. The rotating bracket 520 has a central rotating shaft, which is connected to the inner ring of the two annular plates via multiple fixed rods and is coaxially arranged with the annular plates. The moisture-absorbing paper curtain 530 can be a continuous, meandering paper structure, made of corrugated paper with high water absorption capacity. Multiple moisture-absorbing paper curtains 530 are arranged around the central rotating shaft of the rotating bracket 520, at equal angles and intervals, within the annular cavity between the two annular plates.

[0072] The housing 510 is equipped with a first driving component 540, which can be a motor. The motor is installed at the bottom of the housing 510, and the output shaft of the motor is connected to the central rotating shaft of the rotating bracket 520. When the motor is running, it can drive the rotating bracket 520 to rotate inside the housing 510.

[0073] When air enters the housing 510 through the air inlet 511, the moisture carried by the air is absorbed by the moisture-absorbing paper curtain 530 as it passes through the paper curtain, achieving dehumidification. Simultaneously, as the paper curtain 530 rotates with the rotating bracket 520, it also flings out the absorbed moisture, reducing the probability of moisture flowing into the cylindrical cavity in the center of the annular plate, thus improving the dehumidification effect of the dehumidifier 500. The dehumidified air enters the cylindrical cavity in the center of the annular plate and flows through the air outlet 512 to the air outlet pipe 110.

[0074] The dehumidifier 500 in this embodiment does not require a compressor 200, and the operation of the dehumidifier 500 can be selectively started according to the air type detected by the air detection device and the different working modes of the present invention, which can minimize the energy consumption of the present invention and make the present invention more energy-efficient.

[0075] Furthermore, the moisture-absorbing paper curtain 530 in the dehumidifier 500 is inclined, and the inclination direction of the moisture-absorbing paper curtain 530 is biased towards the rotation direction of the rotating bracket 520.

[0076] The inclined moisture-absorbing paper curtain 530 can form a structure similar to a toothed groove / spoon. When the moisture-absorbing paper curtain 530 rotates, it can "scoop" more air from inside the housing 510 into the gaps of the moisture-absorbing paper curtain 530, which can accelerate the dehumidification of the air.

[0077] Furthermore, the dehumidifier 500 has a guide fan 550 and a second drive member 560 inside the housing 510. The second drive member 560 is used to drive the guide fan 550 to rotate. The guide fan 550 is used to accelerate the air through the rotating bracket 520 and discharge it from the air outlet 512 into the housing 510.

[0078] Specifically, the guide fan 550 is located inside the housing 510 near the air outlet 512 and above the rotating bracket 520. The guide fan 550 corresponds to the central cylindrical cavity of the rotating bracket 520. The second drive unit 560 can be a belt-driven structure or a motor. When the second drive unit 560 is a motor, the motor is installed inside the housing 510 and located between the guide fan 550 and the air outlet 512. The output shaft of the motor is connected to the rotating shaft of the guide fan 550, realizing the rotation of the guide fan 550. The arrangement of the guide fan 550 can accelerate the airflow to the air outlet 512, improving the dehumidification efficiency of the present invention.

[0079] A dehumidification and energy-saving control method suitable for heat pump units, applied to the aforementioned dehumidification and energy-saving device suitable for heat pump units, includes the following steps:

[0080] S1: The type of air in the external environment entering the dehumidification and energy-saving device is detected by the air detection device;

[0081] S2: Control the operation of the dehumidification and energy-saving device according to the type of air in the external environment to reduce the energy consumption of the dehumidification and energy-saving device;

[0082] Step S2 includes the following cases:

[0083] S2.1: When the air type is clean, high-temperature air, the first workflow is executed;

[0084] The first working process is as follows: the air intake pipe 1101, air outlet pipe 110, suction pipe 310 and exhaust pipe 211 are opened by the control unit. The air from the external environment enters the air outlet pipe 110 through the air intake pipe 1101 and is introduced into the condenser 100. After the condenser 100 releases heat, the air is heated. The heated air is introduced into the installation environment. After passing through the installation environment, the air enters the evaporator 300 through the suction pipe 310. After the evaporator 300 absorbs heat from the air, it is discharged to the external environment through the exhaust pipe 211.

[0085] In this workflow, when air passes through condenser 100, since the temperature difference between the air and the target temperature is small, condenser 100 does not need to release too much heat to meet the heating requirements of the air, thereby reducing the operating load of compressor 200, reducing the energy consumption of compressor 200, and lowering the energy consumption of the present invention.

[0086] S2.2: When the ambient air is clean and cold, start the second workflow.

[0087] The second working process is as follows: The control unit opens pipes A (611), II (112), III (311), IV (312), outlet pipe (110), intake pipe (310), and exhaust pipe (211). External ambient air is configured as a cold fluid and introduced into pipe A (611). After flowing through the first flow channel of heat exchanger 600, it sequentially flows through pipe B (612), II (112), and outlet pipe (110), and then enters condenser 100 through outlet pipe 110. The air is heated after the condenser 100 releases heat. The heated air is introduced into the installation environment. The air, as a hot fluid, enters the suction pipe 310 and flows through pipe III 311 and pipe C 621 in sequence before entering the second flow channel of the heat exchanger 600. After entering the second flow channel, the hot air passes through pipe D 622 and pipe IV 312 before entering the suction pipe 310 again. Then it enters the inner flow channel 301 of the evaporator 300. After the evaporator 300 absorbs heat from the air, the air is discharged to the external environment through the exhaust pipe 211.

[0088] In this workflow, the air flowing out from the installation environment can exchange heat with the low-temperature external air flowing through the first flow channel of the heat exchanger 600 when it passes through the second flow channel of the heat exchanger 600. This heats the low-temperature external air before it enters the condenser 100. When the heated external air passes through the condenser 100, the condenser 100 does not need to release too much heat to meet the heating requirements of the air. Therefore, the compressor 200 does not need to operate at a high load, and the external air can be heated to the target temperature by the condenser 100, reducing the energy consumption of the compressor 200.

[0089] S2.3: When the external air is turbid and hot, the third working process will be activated;

[0090] The third working process includes the first external process and the first internal process, which activates the suction pipe 310, dehumidification pipe 210, pipe I 111, pipe II 112, pipe C 621 and pipe D 622 through the control unit;

[0091] The first external process is as follows: the air from the external environment is configured as a hot fluid and introduced into pipe C 621. After flowing through the second flow channel of heat exchanger 600, it is discharged to the external environment from pipe D 622.

[0092] The first internal flow is as follows: Air in the installation environment is introduced into the inner flow channel 301 of the evaporator 300 through the suction pipe 310. After the evaporator 300 absorbs heat from the air, it introduces the air into the dehumidifier 500. The dehumidifier 500 dehumidifies the air. The dehumidified air is configured as a cold fluid and passes through the outlet pipe 110, pipe II 112, and pipe B 612 in sequence before entering the first flow channel of the heat exchanger 600. After passing through the first flow channel, the cold fluid passes through pipe A 611, pipe I 111, and outlet pipe 110 in sequence before entering the condenser 100. After the condenser 100 releases heat, the air is heated. The heated air is then introduced into the installation environment for a new cycle.

[0093] In this workflow, after the air in the installation environment is dehumidified by the dehumidifier 500, it can exchange heat with the high-temperature external gas entering the second flow channel when it flows through the first flow channel of the heat exchanger 600. This allows the air passing through the first flow channel to be reheated. When the heated air passes through the condenser 100, it can be heated to the target temperature without the compressor 200 operating at high load. This reduces the energy consumption of the compressor 200 and lowers the energy consumption of the present invention.

[0094] S2.4: When the external air is turbid and cold, the fourth working process will be activated.

[0095] The fourth working process includes the second external process and the second internal process, which activate the inhalation pipe 310, the dehumidification pipe 210, the air outlet pipe 110, and the external flow channel 302 through the control unit;

[0096] The second external process is as follows: air is introduced into the external flow channel 302 of the evaporator 300, and after the evaporator 300 absorbs heat from the air, it discharges the air to the external environment.

[0097] The second internal process is as follows: Air in the installation environment enters the internal flow channel 301 of the evaporator 300 through the suction pipe 310. After the evaporator 300 absorbs heat from the air, the air passes through the dehumidification pipe 210 and then into the dehumidifier 500. The dehumidifier 500 dehumidifies the air. The dehumidified air passes through the outlet pipe 110 and then into the condenser 100. After the condenser 100 releases heat, the air is heated. The heated air is then introduced into the installation environment for a new cycle.

[0098] In this process, the low-temperature external air introduced into the evaporator 300 can accelerate the evaporation of the refrigerant inside the evaporator 300. When the air in the installation environment passes through the evaporator 300, it can further accelerate the evaporation of the refrigerant in the evaporator 300, thereby reducing the workload of the compressor 200, reducing the energy consumption of the compressor 200, and thus reducing the energy consumption of the present invention.

[0099] Furthermore, when the fourth working process is running, the second external process and the second internal process share the same evaporator 300. The evaporator 300 is provided with a baffle 320, which divides the flow channel of the evaporator 300 into an outer flow channel 302 and an inner flow channel 301, which correspond to the second external process and the second internal process, respectively.

[0100] The external low-temperature gas passes directly through the external flow channel 302, which can accelerate the evaporation of the refrigerant in the evaporator 300 and reduce the operating load of the compressor 200. The air in the installation environment circulates in the condenser 100, the installation environment, the evaporator 300, and the dehumidifier 500.

[0101] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A dehumidification and energy-saving device suitable for heat pump units, characterized in that, This includes a circulation loop formed by connecting the condenser, compressor, evaporator, and expansion valve via refrigerant pipes; The condenser is located at the inlet of the installation environment. The evaporator has independent internal and external flow channels. One end of the internal flow channel is connected to the outlet of the installation environment through the suction pipe. The external flow channel is located in the external environment. The other end of the internal flow channel of the evaporator is connected to a dehumidifier through a dehumidification pipe. The other end of the dehumidifier is connected to one end of the condenser through an outlet pipe. The other end of the condenser is connected to the installation environment. The dehumidification pipe is connected to an exhaust pipe, the other end of which is connected to the external environment. The exhaust pipe is connected to an air inlet pipe, the other end of which is connected to the external environment. An air detection device is installed on the air inlet pipe. A heat exchanger is provided between the intake pipe and the outlet pipe. The heat exchanger has a first flow channel and a second flow channel. The two ends of the first flow channel are connected to pipe A and pipe B, respectively. The two ends of the second flow channel are connected to pipe C and pipe D, respectively. Pipe A and pipe B are connected to the outlet pipe through pipe I and pipe II, respectively. Pipe C and pipe D are connected to the intake pipe through pipe III and pipe IV, respectively. Control valves are installed in the suction pipe, external flow channel, dehumidification pipe, outlet pipe, exhaust pipe, inlet pipe, pipe A, pipe B, pipe C, pipe D, pipe I, pipe II, pipe III, and pipe IV. The control valve of the suction pipe is located between the connection position of pipe III to the suction pipe and the connection position of pipe IV to the suction pipe. The control valve of the dehumidification pipe is located between the connection position of the exhaust pipe to the dehumidification pipe and the dehumidifier. The control valve of the outlet pipe is located between the connection position of pipe I to the outlet pipe and the connection position of pipe II to the outlet pipe. The control valves of pipes A, B, C, and D are located at the ends furthest from the heat exchanger. When the control valves of pipes A, B, C, and D are open, pipes A, B, C, and D are directly connected to the external environment. It also includes a control unit, which can control the opening and closing of the control valve based on the detection results of the air detection device.

2. The dehumidification and energy-saving device for heat pump units according to claim 1, characterized in that: The dehumidifier includes a housing, a rotating bracket, and a moisture-absorbing paper curtain. The housing has an air inlet and an air outlet. The air inlet is connected to the dehumidification pipe, and the air outlet is connected to the air outlet pipe. The rotating bracket is rotatably installed inside the housing. The moisture-absorbing paper curtain has multiple pieces, which are arranged at equal angular intervals around the rotation center axis of the rotating bracket. The housing contains a first driving component, which is used to drive the rotating bracket to rotate.

3. The dehumidification and energy-saving device for heat pump units according to claim 2, characterized in that: The absorbent paper curtain is inclined, and the inclination direction of the absorbent paper curtain is biased towards the rotation direction of the rotating bracket.

4. The dehumidification and energy-saving device for heat pump units according to claim 2, characterized in that: The housing is equipped with a guide fan and a second drive component. The second drive component is used to drive the guide fan to rotate. The guide fan is used to accelerate the air through the rotating bracket and discharge it from the air outlet into the housing.

5. A dehumidification and energy-saving control method applicable to heat pump units, applied to the dehumidification and energy-saving device for heat pump units as described in any one of claims 1-4, characterized in that, Includes the following steps: S1: The type of air in the external environment entering the dehumidification and energy-saving device is detected by the air detection device; S2: Select the appropriate working process based on the type of air in the external environment to reduce the energy consumption of the dehumidification energy-saving device; Step S2 includes the following cases: S2.1: When the air in the external environment is clean and hot, the first working process is activated to reduce the energy consumption of the compressor in the dehumidification energy-saving device. The first working process is as follows: the control valves in the inlet pipe, outlet pipe and exhaust pipe are opened by the control unit. The air in the external environment enters the outlet pipe from the inlet pipe and is introduced into the condenser. After the condenser releases heat, the air is heated. The heated air is introduced into the installation environment. After passing through the installation environment, the air enters the inner flow channel of the evaporator through the suction pipe. After the evaporator absorbs heat from the air, the air is discharged to the external environment through the exhaust pipe. S2.2: When the ambient air is clean and low-temperature air, the second working process is activated to reduce the energy consumption of the compressor in the dehumidification energy-saving device. The second working process is as follows: the control valves in pipes A, II, III, IV, the outlet pipe, and the exhaust pipe are opened by the control unit. The ambient air is introduced into pipe A as a cold fluid. After flowing through the first flow channel of the heat exchanger, it flows through pipes B, II, and the outlet pipe in sequence, and then into the condenser through the outlet pipe. After the condenser releases heat, the air is heated. The heated air is introduced into the installation environment. The air in the installation environment enters the suction pipe as a hot fluid, and then enters the second flow channel of the heat exchanger through pipes III and C. After the hot fluid passes through the second flow channel, it enters the inner flow channel of the evaporator through pipes D and IV and the suction pipe. After the evaporator absorbs heat from the air, the air is discharged to the ambient environment through the exhaust pipe. S2.3: When the external air is turbid and hot, the third working process is activated to reduce the energy consumption of the compressor in the dehumidification energy-saving device. The third working process includes the first external process and the first internal process. The control valves in the suction pipe, dehumidification pipe, pipe I, pipe II, pipe C and pipe D are opened by the control unit. The first external process is as follows: the air from the external environment is configured as a hot fluid and introduced into pipe C. After flowing through the second flow channel of the heat exchanger, it is discharged to the external environment from pipe D. The first internal flow is as follows: Air in the installation environment is introduced into the inner flow channel of the evaporator through the suction pipe. After the evaporator absorbs heat from the air, the air is introduced into the dehumidifier through the dehumidification pipe. The dehumidifier dehumidifies the air. The dehumidified air is configured as a cold fluid and enters the outlet pipe, pipe II, and pipe B in sequence and then enters the first flow channel of the heat exchanger. After the air as a cold fluid passes through the first flow channel, it enters the pipe A, pipe I, and outlet pipe in sequence and then enters the condenser. After the condenser releases heat, the air is heated. The heated air is then introduced into the installation environment to start a new cycle. S2.4: When the external air is turbid and low temperature air, the fourth working process is run to reduce the energy consumption of the compressor in the dehumidification energy-saving device. The fourth working process includes the second external process and the second internal process. The control valves in the suction pipe, dehumidification pipe, air outlet pipe and external flow channel are opened by the control unit. The second external process is as follows: air is introduced into the external flow channel of the evaporator, and after the evaporator absorbs heat from the air, it discharges the air to the external environment; The second internal process is as follows: Air in the installation environment is introduced into the inner flow channel of the evaporator through the suction pipe. After the evaporator absorbs heat from the air, it introduces the air into the dehumidifier through the dehumidification pipe. The dehumidifier dehumidifies the air. The dehumidified air is then introduced into the condenser through the outlet pipe. After the condenser releases heat, the air is heated. The heated air is then introduced into the installation environment for a new cycle.

6. The dehumidification and energy-saving control method for heat pump units according to claim 5, characterized in that: The second external flow and the second internal flow share the same evaporator. The evaporator is equipped with a baffle plate that divides the flow channels of the evaporator into the external flow channel and the internal flow channel.

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