Dehumidification heat pump unit

Abstract

The invention relates to the technical field of dehumidification heat pumps, in particular to a dehumidification heat pump unit which comprises a cabinet. The connecting pipe is arranged on the machine cabinet, the air return pipe is arranged on the connecting pipe, the first fan is arranged at one end of the air return pipe, the air inlet pipe is arranged on one side of the air return pipe, the evaporator is arranged at one end of the air inlet pipe, the groove is formed in the machine cabinet, and the condenser is arranged on one side of the evaporator. The air conditioner comprises an evaporator, a condenser arranged on one side of the evaporator, a second fan arranged on one side of the condenser and an air outlet pipe arranged on the second fan, and further comprises a pipeline arranged on the evaporator, and one end of the pipeline communicates with an air inlet pipe. The retention and accumulation time of water drops on the surface of the evaporator is reduced, and the formation of a water film is effectively avoided. By means of the design, the requirement for regular cleaning and maintenance of the evaporator is avoided, and extra manpower and material resource cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of dehumidifying heat pump technology, specifically to a dehumidifying heat pump unit. Background Technology

[0002] A dehumidifying heat pump unit is a highly efficient air-source heat pump dehumidification device. This device draws in warm, humid indoor air, directs it through an evaporator within the heat pump unit, and lowers the air temperature below the dew point via a refrigeration cycle. This causes water vapor in the air to condense into water droplets and be expelled, thus reducing the moisture content of the air and achieving dehumidification. During this process, the heat extracted from the air is used to reheat the cooled, drier air after dehumidification, raising its temperature to a comfortable level before it is returned to the room. In this way, the dehumidifying heat pump unit not only effectively controls indoor humidity but also improves energy efficiency by utilizing recovered heat, achieving both energy savings and a comfortable indoor environment.

[0003] In a refrigeration system, the evaporator plays a crucial role. Its basic function is to enable the liquid refrigerant to absorb heat from the surrounding environment and evaporate, thereby achieving the purpose of cooling and dehumidification. The operation of the evaporator depends on a key physical phenomenon: when the temperature of the evaporator surface drops below the dew point temperature of the air flowing over it, the water vapor in the air will become saturated and condense into liquid water, forming water droplets. The dew point temperature is the specific temperature at which water vapor in the air begins to condense into liquid water, and it is an important parameter in the refrigeration process.

[0004] In high-humidity environments, such as indoor swimming pools, the air contains a large amount of water vapor. This water vapor condenses rapidly upon contact with the low-temperature surface of the evaporator, forming a water film. This phenomenon is particularly pronounced in high-humidity environments because the higher water vapor content in the air makes condensation easier on low-temperature surfaces. Furthermore, if airflow around the evaporator is obstructed, moisture cannot be quickly removed, causing water vapor to accumulate on the evaporator surface, further exacerbating water film formation. This water film forms an insulating layer on the evaporator surface, hindering heat transfer and reducing heat exchange efficiency. This increases energy consumption and reduces evaporation efficiency because more heat needs to be transferred to achieve the same evaporation effect, and due to the reduced heat exchange efficiency, the heat pump unit requires more energy to maintain the same evaporation rate, thus increasing overall energy consumption. In the prior art, in order to avoid the formation of water film in the evaporator and the problems it causes, various measures have been taken, such as regularly cleaning and maintaining the evaporator to remove water film and impurities and maintain efficient system operation, or selecting high-efficiency lubricating oil with good compatibility with refrigerant to reduce the formation of water film. However, the above two methods require additional manpower and resources for regular cleaning and maintenance, which increases operating costs. High-efficiency lubricating oil is expensive and needs to be selected according to the specific type of refrigerant.

[0005] Therefore, evaporators in the prior art often face the problem of water film formation when operating in high humidity environments. This not only affects the heat exchange efficiency of the evaporator, but also leads to a decrease in system performance and an increase in maintenance costs.

[0006] Therefore, a dehumidifying heat pump unit is proposed. Summary of the Invention

[0007] The purpose of this invention is to provide a dehumidifying heat pump unit. When the dehumidifying heat pump unit is working, the suction generated by the air inlet pipe can draw the airflow in the evaporator from top to bottom into the air inlet pipe. The airflow accelerates the flow of water droplets on the fins, which can prevent the evaporator surface from condensing into a continuous water film and improve its heat exchange efficiency.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A dehumidifying heat pump unit includes a cabinet, a connecting pipe mounted on the cabinet, a return air duct mounted on the connecting pipe, a fan at one end of the return air duct, an air inlet pipe on one side of the return air duct, an evaporator at one end of the air inlet pipe, a groove on the cabinet, a condenser on one side of the evaporator, a second fan on one side of the condenser, and an air outlet pipe mounted on the second fan. It also includes a pipe mounted on the evaporator, one end of which is connected to the air inlet pipe. When air is introduced, the air inlet pipe draws air from the evaporator, and the airflow inside the evaporator is drawn into the air inlet pipe from top to bottom. An air extraction groove is provided at the bottom of the evaporator, and a connecting block is provided at the bottom of the evaporator to store condensate. A spray assembly is also provided on one side of the evaporator, and the spray assembly is positioned above the condenser.

[0010] It is known that in existing technologies, when dehumidifying heat pump units are used for pool dehumidification, the high water vapor content in the air easily forms a water film on the evaporator surface. This water film forms an insulating layer on the evaporator surface, hindering heat transfer and reducing heat exchange efficiency. This device, when the fan is running, draws humid indoor and outdoor air into the unit through connecting pipes and inlet pipes, respectively. During this process, the drawn-in air flows through the evaporator and exchanges heat with the low-temperature refrigerant. In this heat exchange process, the water vapor in the air condenses into water droplets upon cooling, thus achieving the dehumidification effect.

[0011] As humid outdoor air is drawn into the cabinet through the intake pipe, the suction generated by the second fan also creates a corresponding suction force within the pipe. This design creates a top-to-bottom air extraction path inside the evaporator. When air flows over the low-temperature evaporator surface, the water vapor condenses into water droplets. These droplets naturally flow downwards due to gravity, and the airflow generated by the extraction further accelerates this process, causing the droplets to move from the top to the bottom of the evaporator more quickly. This promotes the rapid removal of water vapor from the evaporator, helping to maintain a uniform airflow distribution inside the evaporator. Because the water droplets are removed quickly, their residence and accumulation time on the evaporator surface is reduced, effectively preventing water vapor from condensing into a continuous water film on the evaporator surface, ensuring effective operation and high-efficiency dehumidification performance of the equipment.

[0012] Preferably, the evaporator includes a side plate, a base tube, and fins. The side plate is installed at the bottom inside the cabinet. Multiple sets of base tubes are provided and disposed inside the side plate. Multiple sets of fins are provided and are rotatably connected to the base tubes. When air passes through the evaporator, the fins will rotate. The fins can dynamically adjust the angle of attack according to the airflow speed so that the airflow always flows through the fin surface at the optimal angle of attack.

[0013] Preferably, multiple sets of air extraction slots are provided, and each air extraction slot corresponds to one side of the fin. When the air extraction slots extract air, they will drive the airflow downward.

[0014] Preferably, the multiple sets of fins are configured as multiple layers, each layer of fins having a different rotation angle relative to the layer below, and the rotation angle of each layer of fins being smaller than the rotation angle of the layer below.

[0015] Preferably, one side of the multiple sets of air extraction grooves is provided with a slope, which helps the condensed water droplets flow from the air extraction grooves into the connecting block.

[0016] Preferably, one side of the bottom of the connecting block is higher than the other side, and it slopes downward toward the side of the condenser.

[0017] Preferably, the groove is formed in the lower part of the cabinet, and the groove is located corresponding to the lower half of the evaporator. The drawn-in air is transmitted into the evaporator from the groove. Since the groove is located close to the lower part of the evaporator, the airflow velocity at the lower part of the evaporator is higher than the airflow velocity at the upper part of the evaporator.

[0018] Preferably, the spraying assembly includes a water pipe, a water tank, and a spraying block. The water pipe is installed on the connecting block and is connected to the connecting block. The water tank is located between the evaporator and the condenser, and the water pipe is connected to the water tank. The spraying block is located on the water tank, and the spraying block also has multiple sets of circular holes. The circular holes are located above the condenser, and water droplets condensed in the evaporator will pass through the water pipe.

[0019] Preferably, one end of the spray block is also provided with an air extraction pipe, and one end of the air extraction pipe is connected to the second phase of the fan.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. The air extraction path designed in this device helps prevent water vapor from condensing into a continuous water film on the evaporator surface, reducing the time water droplets remain and accumulate on the evaporator surface, effectively avoiding the formation of a water film. This design eliminates the need for regular cleaning and maintenance of the evaporator, reducing additional manpower and material costs.

[0022] 2. This device dynamically adjusts the angle of attack of the evaporator fins during air extraction to adapt to different airflow velocities, optimizing the interaction between the airflow and the fins and thus improving heat exchange efficiency. Simultaneously, the atomized condensate absorbs a significant amount of heat during evaporation, effectively reducing the condenser's inlet air temperature and further enhancing its heat exchange efficiency. These measures lower the condensing temperature and pressure, reduce the compressor's operating load, improve the overall system efficiency, and significantly reduce the energy consumption of the dehumidifying heat pump.

[0023] 3. Lowering the condenser temperature helps reduce fin corrosion and scaling, extending the condenser's lifespan. Simultaneously, reducing the compressor load also helps extend the compressor's lifespan. Furthermore, by rationally utilizing the water droplets evaporated from the evaporator, collecting and spraying them onto the condenser, this recycling method not only improves efficiency but also reduces potential damage to the equipment, further extending its lifespan. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a dehumidifying heat pump unit according to the present invention;

[0025] Figure 2 This is a plan view of a dehumidifying heat pump unit according to the present invention;

[0026] Figure 3 This is a schematic diagram of the rear structure of a dehumidifying heat pump unit according to the present invention;

[0027] Figure 4 This is a schematic diagram of the spraying assembly of the present invention;

[0028] Figure 5 This is a schematic diagram of the air extraction tube of the present invention;

[0029] Figure 6 This is a schematic diagram of the evaporator structure of the present invention;

[0030] Figure 7This is a schematic diagram of the airflow direction of the dehumidifying heat pump unit of the present invention;

[0031] Figure 8 This is a schematic diagram of the fin turning structure inside the evaporator of the present invention;

[0032] Figure 9 For the present invention Figure 8 A schematic diagram showing the water column flow direction at point A and the fins.

[0033] Figure 10 For the present invention Figure 8 A schematic diagram showing the expansion at point B and the airflow passing through the fins;

[0034] In the diagram: 1. Cabinet; 2. Connecting pipe; 3. Return air duct; 4. Fan 1; 5. Inlet pipe; 6. Evaporator; 7. Groove; 8. Condenser; 9. Fan 2; 10. Outlet pipe; 11. Pipe; 12. Extraction duct; 13. Connecting block; 14. Spray assembly; 61. Side plate; 62. Base pipe; 63. Fin; 131. Ramp; 141. Water pipe; 142. Water tank; 143. Spray block; 144. Round hole; 15. Extraction pipe. Detailed Implementation

[0035] 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.

[0036] Please see Figures 1 to 10 This invention provides a dehumidifying heat pump unit, the technical solution of which is as follows:

[0037] As one embodiment of the present invention, refer to Figures 1-3 and Figure 6A dehumidifying heat pump unit includes a cabinet 1, a connecting pipe 2 mounted on the cabinet 1, a return air pipe 3 mounted on the connecting pipe 2, a fan 4 mounted at one end of the return air pipe 3, an air inlet pipe 5 mounted on one side of the return air pipe 3, an evaporator 6 mounted at one end of the air inlet pipe 5, a groove 7 formed on the cabinet 1, a condenser 8 mounted on one side of the evaporator 6, a fan 9 mounted on one side of the condenser 8, and an air outlet pipe 10 mounted on the fan 9. It also includes a pipe 11 mounted on the evaporator 6, one end of which is connected to the air inlet pipe 5. When the air inlet pipe 5 is inlet, it drives the pipe 11 to draw air from the evaporator 6. The airflow in the evaporator 6 is drawn into the air inlet pipe 5 from top to bottom. An air extraction groove 12 is formed at the bottom of the evaporator 6. A connecting block 13 is provided at the bottom of the evaporator 6 to store condensate. A spray assembly 14 is also provided on one side of the evaporator 6, positioned above the condenser 8.

[0038] It is known that in existing technologies, when a dehumidifying heat pump unit is used for pool dehumidification, the high water vapor content in the air easily forms a water film on the surface of the evaporator 6. This water film forms an insulating layer on the surface of the evaporator 6, hindering heat transfer and reducing heat exchange efficiency. When the fan 9 operates, this device draws humid indoor and outdoor air into the unit through the connecting pipe 2 and the air inlet pipe 5, respectively. During this process, the drawn-in air flows through the evaporator 6 and exchanges heat with the low-temperature refrigerant. In this heat exchange process, the water vapor in the air condenses into water droplets due to the cooling effect, thus achieving dehumidification.

[0039] As humid outdoor air is drawn into the cabinet 1 through the intake pipe 5, the suction generated by the second fan 9 also creates a corresponding suction force within the pipe 11. This design creates a top-to-bottom air extraction path inside the evaporator 6. When air flows over the low-temperature surface of the evaporator 6, the water vapor condenses into water droplets due to the cold. These water droplets naturally flow downwards due to gravity, and the airflow generated by the extraction further accelerates this process, causing the water droplets to move from the top to the bottom of the evaporator 6 more quickly. This promotes the rapid removal of water vapor from the evaporator 6 and helps maintain a uniform airflow distribution inside the evaporator 6. Because the water droplets are removed quickly, the time they spend on the surface of the evaporator 6 is reduced, effectively preventing water vapor from condensing into a continuous water film on the surface of the evaporator 6, ensuring the effective operation of the equipment and high-efficiency dehumidification performance.

[0040] As one embodiment of the present invention, refer to Figure 6The evaporator 6 includes a side plate 61, a base tube 62, and fins 63. The side plate 61 is installed at the bottom inside the cabinet 1. Multiple sets of base tubes 62 are provided and are located inside the side plate 61. Multiple sets of fins 63 are provided and are rotatably connected to the base tubes 62. When air passes through the evaporator 6, the fins 63 will rotate due to the suction force generated by the pipe 11, which is transmitted from the air extraction slot 12. Furthermore, the fins 63 can dynamically adjust the angle of attack according to the airflow speed, so that the airflow always flows through the surface of the fins 63 at the optimal angle of attack.

[0041] As one embodiment of the present invention, refer to Figure 6 Multiple sets of air extraction slots 12 are provided, and each air extraction slot 12 corresponds to one side of the fin 63. When the air extraction slot 12 extracts air, it will drive the airflow downward. Due to the position of the air extraction slot 12, the fin 63 can tilt downward in the same direction.

[0042] As one embodiment of the present invention, refer to Figure 6 The multiple sets of fins 63 are configured as multiple layers, each layer of fins 63 has a different rotation angle relative to the next layer of fins 63, and the rotation angle of each layer of fins 63 is smaller than the rotation angle of the next layer of fins 63.

[0043] As one embodiment of the present invention, refer to Figure 6 A ramp 131 is provided on one side of the multiple sets of air extraction grooves 12. The ramp 131 helps the condensed water droplets to flow from the air extraction grooves 12 into the connecting block 13.

[0044] As one embodiment of the present invention, refer to Figure 6 The bottom of the connecting block 13 is higher on one side than on the other, and it tilts downward toward the side of the condenser 8.

[0045] As one embodiment of the present invention, refer to Figure 1 and Figure 3 The groove 7 is located at the bottom of the cabinet 1. The position of the groove 7 corresponds to the lower half of the evaporator 6. The air drawn in is transmitted into the evaporator 6 from the groove 7. Since the groove 7 is located close to the bottom of the evaporator 6, the airflow velocity at the bottom of the evaporator 6 is higher than the airflow velocity at the top of the evaporator 6.

[0046] As one embodiment of the present invention, refer to Figure 4 The spraying assembly 14 includes a water pipe 141, a water tank 142, and a spraying block 143. The water pipe 141 is installed on the connecting block 13 and is connected to the connecting block 13. The water tank 142 is located between the evaporator 6 and the condenser 8, and the water pipe 141 is connected to the water tank 142. The spraying block 143 is located on the water tank 142, and multiple sets of round holes 144 are also opened on the spraying block 143. The round holes 144 are located above the condenser 8, and the water droplets condensed in the evaporator 6 will pass through the water pipe 141.

[0047] As one embodiment of the present invention, refer to Figure 5 One end of the spray block 143 is also provided with an air extraction pipe 15. One end of the air extraction pipe 15 is connected to the fan 2 9. The air extraction pipe 15 causes the water droplets to be sprayed out in the form of water mist when they flow through the round hole 144.

[0048] Working principle: Refer to Figure 7 The working process of the dehumidifying heat pump unit mainly includes: First, humid indoor air is drawn in through the connecting pipe 2 and dehumidified by the evaporator 6, causing the moisture in the air to condense and be discharged; then, the liquid refrigerant absorbs heat in the evaporator 6 and turns into a gaseous state, which is then compressed into a high-temperature and high-pressure gas by the compressor; then, the high-temperature and high-pressure gas flows to the air reheating coil or the pool water condenser 8 as needed for air heating or pool water heating; at the same time, the indoor return air is mixed with the fresh air in the air intake pipe 5, and after being filtered, cooled, dehumidified, and reheated, it is sent to the room; finally, the automatic control system regulates the indoor temperature and humidity to achieve constant temperature and humidity, while maintaining a slight negative pressure in the room to ensure stable air quality and temperature.

[0049] In existing technologies, various measures have been taken to avoid the formation of a water film on the evaporator 6 and the problems it causes. These include regularly cleaning and maintaining the evaporator 6 to remove the water film and impurities, maintaining efficient system operation, or selecting a high-efficiency lubricating oil with good compatibility with the refrigerant to reduce water film formation. However, these two methods require additional manpower and resources for regular cleaning and maintenance, increasing operating costs. High-efficiency lubricating oil is expensive and requires selection based on the specific type of refrigerant. To prevent water film formation on the evaporator 6, this device connects the inlet pipe 5 to the evaporator 6 via a pipe 11. When humid outdoor air is drawn into the cabinet 1 through the inlet pipe 5, the suction generated by the fan 9 also creates a corresponding suction force within the pipe 11. This design creates a top-to-bottom air extraction path inside the evaporator 6 (see reference). Figure 5 When air flows over the low-temperature surface of the evaporator 6, the water vapor in it condenses into water droplets due to the cold. These water droplets naturally flow downwards due to gravity, and the airflow generated by the extraction further accelerates this process. The airflow in the intake pipe 5, as it passes through the fins 63, forms a wall-hugging flow along the surface of the fins 63. This flow pattern ensures that the airflow makes full contact with the surface of the fins 63. (Refer to...) Figure 10This increases the heat exchange area and efficiency between the airflow and the fins 63. Simultaneously, this airflow movement generates a dynamic shear force that acts on the water droplets on the surface of the evaporator 6, causing them to move more quickly from the top to the bottom. Furthermore, the rapid airflow generated by the extraction process helps to facilitate the rapid removal of water vapor from the interior of the evaporator 6, further enhancing its heat exchange performance. Because the water droplets are quickly removed, their residence and accumulation time on the surface of the evaporator 6 is reduced, effectively preventing water vapor from condensing into a continuous water film on the surface of the evaporator 6. This ensures efficient operation and high-efficiency dehumidification without the need for regular cleaning and maintenance of the evaporator 6 to remove water film and impurities.

[0050] This device prevents water film formation while achieving better heat exchange in the evaporator 6. Specifically, the fins 63 on the evaporator 6 are changed from fixed to rotatable connection to the base tube 62, and the evaporator 6 is rotatably connected to the base tube 62 via a torsion spring. When the fan 9 operates, it draws indoor and outdoor humid air into the unit through the connecting pipe 2 and the air inlet pipe 5, respectively. Before the fresh air reaches the evaporator 6, a corresponding suction force is generated in the pipe 11, creating a top-to-bottom suction path inside the evaporator 6. At this time, the suction slot 12 on the evaporator 6, due to its position, allows the fins 63 to tilt downwards in the same direction. During the tilting process, not only can the water droplets on the fins 63 flow faster, but also, because the rotation angle of each layer of fins 63 is smaller than that of the next layer of fins 63, the water droplets form a water column that does not affect the next layer when it falls (see reference). Figure 8 and Figure 9 ).

[0051] It can also automatically adjust the angle of attack based on changes in airflow speed (angle of attack is the angle between the direction of motion of an object in a fluid and the longitudinal axis of the object, commonly symbolized as α);

[0052] The higher the rotation speed of fan 2 9, the greater the suction force generated within pipe 11, and the larger the rotation angle of fin 63. Conversely, the lower the rotation speed of fan 2 9, the smaller the suction force generated within pipe 11, and the smaller the rotation angle of fin 63. Fin 63 rotates automatically with the airflow speed, dynamically adjusting the angle of attack to adapt to different airflow speed conditions. At low airflow speeds, fin 63 can be adjusted to a smaller angle of attack (e.g., 5°) to reduce drag; at high airflow speeds, it can be adjusted to a larger angle of attack (e.g., 10°) to enhance heat exchange. At low speeds, the airflow needs to flow more smoothly over fin 63 to avoid premature flow separation, thereby reducing pressure drop and drag. A smaller angle of attack for fin 63, based on the suction force formed by the exhaust pipe 15, helps maintain laminar flow and reduces energy loss due to turbulence. At high speeds, although a larger angle of attack increases drag, the higher flow velocity allows for enhanced turbulent mixing, thus improving heat exchange efficiency. The increased resistance is offset by the higher heat exchange efficiency, resulting in improved overall system efficiency.

[0053] It should be noted that the air drawn in is transmitted into the evaporator 6 from the groove 7. Since the groove 7 is located close to the bottom of the evaporator 6, the airflow velocity at the bottom of the evaporator 6 is higher than that at the top of the evaporator 6. As a result, the fins 63 in the lower half of the evaporator 6 have the greatest suction force and the largest tilt angle. The tilt angle of the upper fins 63 is smaller than that of the lower fins 63, which corresponds exactly to the flow velocity of the gas passing through the fins 63.

[0054] Furthermore, the device makes efficient use of the water droplets evaporated from the evaporator 6: the water droplets flowing down after the fins 63 rotate are collected in the connecting block 13 and enter the water tank 142. The evaporated water stored in the water tank 142 drips onto the condenser 8 through the round holes 144 on the spray block 143. Due to the suction generated by the fan 9 in the exhaust pipe 15, a negative pressure is generated in the spray block 143, and the water droplets in the spray block 143 are sprayed onto the condenser 8 in the form of water mist. The atomized condensate absorbs a large amount of heat during the evaporation process, effectively reducing the inlet air temperature of the condenser 8 and improving the heat exchange efficiency of the condenser 8. This cooling effect further reduces the condensing temperature and pressure, reduces the operating load of the compressor, and thus improves the overall system efficiency. In addition, improving heat exchange efficiency and reducing condensing pressure also significantly reduces the energy consumption of the dehumidifying heat pump, achieving energy saving and emission reduction.

[0055] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dehumidifying heat pump unit, comprising a cabinet (1), a connecting pipe (2) disposed on the cabinet (1), a return air duct (3) disposed on the connecting pipe (2), a fan (4) disposed at one end of the return air duct (3), an air inlet pipe (5) disposed on one side of the return air duct (3), an evaporator (6) disposed at one end of the air inlet pipe (5), a groove (7) formed on the cabinet (1), a condenser (8) disposed on one side of the evaporator (6), a fan (9) disposed on one side of the condenser (8), and an air outlet pipe (10) disposed on the fan (9), characterized in that: It also includes a pipe (11) installed on the evaporator (6), one end of which is connected to the air inlet pipe (5). When the air inlet pipe (5) is inlet, it drives the pipe (11) to draw air from the evaporator (6). The airflow in the evaporator (6) is drawn into the air inlet pipe (5) from top to bottom. An air extraction groove (12) is provided at the bottom of the evaporator (6). A connecting block (13) is provided at the bottom of the evaporator (6). The connecting block (13) can store condensate. A spraying assembly (14) is also provided on one side of the evaporator (6). The spraying assembly (14) is located above the condenser (8).

2. The dehumidifying heat pump unit according to claim 1, characterized in that: The evaporator (6) includes a side plate (61), a base tube (62), and fins (63). The side plate (61) is installed below the cabinet (1). Multiple sets of the base tube (62) are provided and are located inside the side plate (61). Multiple sets of the fins (63) are provided and are rotatably connected to the base tube (62).

3. The dehumidifying heat pump unit according to claim 2, characterized in that: Multiple sets of the air extraction grooves (12) are provided, and each air extraction groove (12) corresponds to one side of the fin (63).

4. A dehumidifying heat pump unit according to claim 3, characterized in that: The multiple sets of fins (63) are configured as multiple layers, each layer of fins (63) has a different rotation angle relative to the next layer of fins (63), and the rotation angle of each layer of fins (63) is smaller than the rotation angle of the next layer of fins (63).

5. A dehumidifying heat pump unit according to claim 4, characterized in that: A ramp (131) is provided on one side of each of the multiple sets of air extraction slots (12).

6. A dehumidifying heat pump unit according to claim 5, characterized in that: The bottom of the connecting block (13) is higher on one side than on the other side, and tilts downward toward the side of the condenser (8).

7. A dehumidifying heat pump unit according to claim 5 or 6, characterized in that: The groove (7) is formed in the lower part of the cabinet (1), and the position of the groove (7) corresponds to the lower half of the evaporator (6).

8. A dehumidifying heat pump unit according to claim 7, characterized in that: The spraying assembly (14) includes a water pipe (141), a water tank (142), and a spraying block (143). The water pipe (141) is installed on the connecting block (13) and is connected to the connecting block (13). The water tank (142) is located between the evaporator (6) and the condenser (8). The water pipe (141) is connected to the water tank (142). The spraying block (143) is located on the water tank (142). The spraying block (143) also has multiple sets of round holes (144) on it. The round holes (144) are located above the condenser (8).

9. A dehumidifying heat pump unit according to claim 8, characterized in that: One end of the spray block (143) is also provided with an air extraction pipe (15), and one end of the air extraction pipe (15) is connected to the second fan (9).

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