Dehumidifier provided with refrigeration fan

Abstract

This application provides a dehumidifier with cooling fan blades to at least solve the technical problem of dehumidifier efficiency in the prior art. A dehumidifier with cooling fan blades includes a refrigeration unit, a drive unit, and fan blades. The refrigeration unit achieves cooling through evaporative heat absorption or thermoelectric methods. The refrigeration unit directly contacts the fan blades, indirectly contacts them, or transfers cooling energy through a fluid medium to lower the fan blade temperature. The drive unit drives the fan blades to rotate. The fan blades are cooled by the refrigeration unit, so when the airflow passes over the fan blades, the temperature is lowered, and water vapor is condensed into liquid water. When the fan blades rotate, the condensate adsorbed on the fan blades is quickly thrown off under centrifugal force. Furthermore, the high-speed airflow also accelerates the flow of condensate. Thus, there is less condensate on the fan blade surface, better heat exchange performance, improved dehumidifier efficiency, reduced energy consumption, and energy-saving and emission-reduction effects.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, and more particularly to a dehumidifier equipped with cooling fan blades. Background Technology

[0002] Dehumidifiers are mainly classified into compressor type, dryer type, hybrid type, and semiconductor type according to their operating principle. Ordinary household dehumidifiers have a wide range of humidity requirements, so compressor type is commonly used. Compressor type dehumidifiers usually have an evaporator. The refrigerant evaporates in the evaporator, taking away heat and lowering the temperature of the fins, which causes the water vapor to condense. However, the small water droplets formed by the water vapor will be adsorbed on the fins, hindering heat exchange between the fins and the air. Due to the small effect of gravity, a water film of a certain thickness can form on the fins, reducing the heat exchange efficiency. At low temperatures, frost may even form. In addition, water has a high specific heat, and the condensate adsorbed on the fins can absorb the cold energy of the refrigerant, thereby further reducing the working efficiency of the dehumidifier.

[0003] Chinese patent application CN207280021U, entitled "A Dual Evaporator for a Dehumidifier," discloses a dual evaporator for a dehumidifier, comprising a heat exchange box. The heat exchange box has an inlet pipe and an outlet pipe at its left and right ends, respectively. Inside the heat exchange box are an upper connecting plate and a lower connecting plate, with several heat exchange tubes arranged between them. Heat exchange fins are provided on the outer sides of the heat exchange tubes. A drive shaft, which is a hollow tube, is vertically positioned at the upper center of the upper connecting plate. The drive shaft is connected to the upper connecting plate, and its upper end passes through the heat exchange box. The output end of the drive motor is fixedly connected, and the heat exchange box is equipped with a sealed bearing that matches the drive shaft. An upper sealing cover is provided between the drive motor and the heat exchange box. The refrigerant inlet is located on the outside of the drive shaft inside the upper sealing cover. The refrigerant in the heat exchange tube is a high-pressure mixture, which is prone to leakage. If the heat exchange tube rotates, the heat exchange tube must be connected to the refrigerant inlet and outlet pipes. How to ensure the sealing of the movable connection, and how to ensure that the pressure of the heat exchange tube may increase further when not in operation, and how to ensure that the pressure of the heat exchange tube is higher than that of the mixed refrigerant, which makes leakage more likely, are all challenges. Therefore, rotating the heat exchange tube is quite difficult.

[0004] Chinese patent application CN207280020U, entitled "A U-shaped Evaporator for a Dehumidifier," discloses a U-shaped evaporator for a dehumidifier, including a dehumidification chamber. The chamber has an inlet pipe and an outlet pipe at its left and right ends, respectively. The left end of the inlet pipe is connected to the outlet of an air pump. A drain pipe is located on the lower right side of the chamber. A piston sleeve is located at the upper center of the chamber, with a detachable cap at its upper end. A piston block slides inside the sleeve, and the upper surface of the piston block is connected to the cap by a return spring. The lower end of the piston block is connected to a vibrating disc inside the chamber via a hanger. The vibrating disc has a hollow structure and a partition plate at its center, dividing the disc into two chambers. This patent utilizes the vibrating disc to promptly remove condensation from the U-shaped bend, thus preventing frost formation. However, the vibration generates noise and requires high strength in the connecting pipes. Prolonged vibration can easily cause the pipe connections to detach and affect the evaporator's operation. Summary of the Invention

[0005] This application provides a dehumidifier with cooling fan blades to at least solve the technical problem of dehumidifier working efficiency in the prior art.

[0006] According to this application, a dehumidifier with cooling fan blades is provided, including a cooling device, a driving device and fan blades. The cooling device achieves cooling through evaporative heat absorption or thermoelectricity. The cooling device transfers cold energy to the fan blades in direct or indirect contact (e.g., through a fluid medium) to reduce the temperature of the fan blades. The driving device can drive the fan blades to rotate.

[0007] Compared to existing technologies, the dehumidifier with cooling fan blades in this application has the following advantages:

[0008] The fan blades are cooled by a refrigeration unit. When airflow passes over the blades, it cools the air, causing water vapor to condense into liquid water. As the fan blades rotate, the condensate adsorbed on them is quickly dislodged by centrifugal force. The high-speed airflow also accelerates the flow of condensate, resulting in less condensate on the blade surface, better heat exchange performance, improved dehumidifier efficiency, and reduced energy consumption, achieving energy conservation and emission reduction. Furthermore, condensation occurs through contact between the air and the fan blades, not directly with the evaporator. The fan blades act as a temperature buffer, with a smaller temperature fluctuation range compared to the evaporator. In low-temperature environments, this prevents the fan blades from freezing due to excessively low temperatures, thus improving dehumidification efficiency. If a fluid medium is used to transfer cooling, the fan blade temperature can be further stabilized, keeping it above zero degrees Celsius, preventing frost formation, improving heat exchange efficiency, and reducing energy consumption.

[0009] In one embodiment, an annular condensate collection groove is provided around the outer periphery of the fan blades to collect the condensate splashed out by the rotating fan blades. When the fan blades rotate at high speed, condensate splashes in all directions, so the annular condensate collection groove can collect the splashed condensate, thereby achieving the function of quickly reducing air humidity.

[0010] In one embodiment, the fan blades are directly or indirectly connected to the heat-conducting part, which is at least partially located in a heat-conducting pool containing a fluid medium. The refrigeration device includes an evaporator, which is at least partially located within the heat-conducting pool. Compared to using bearings for heat conduction, utilizing the fluid medium in the heat-conducting pool provides better cold conduction, resulting in lower fan blade temperatures and better dehumidification. The evaporator remains stationary, and the fixed pipe connections reduce the risk of leakage.

[0011] In one embodiment, the fan blades are axial flow fan blades, which can rotate in both directions under the drive of the drive device. When the temperature is below 5°C, the dehumidifier's efficiency decreases and it is prone to frost formation. When the fan blades rotate in the reverse direction, the air can be heated before dehumidification, which can avoid frost formation, improve the dehumidification effect, and increase the working efficiency.

[0012] In one embodiment, the heat-conducting part includes an end cap and a tube body. The evaporator is located in the tube body and disposed between the end cap and the fan blades. The end cap has a through hole in its center, and the connecting pipe of the evaporator passes through the through hole and connects to the compressor and the condenser. In this way, the evaporator lowers the temperature of the fluid medium in the heat-conducting pool, while the fan blades increase the temperature of the fluid medium in the heat-conducting pool. The evaporator is located above the heat-conducting plate, where the density is higher at lower temperatures and lower at higher temperatures, allowing convection to be automatically formed under the temperature difference without the need for further drive structures. In addition, the rotating heat-conducting part can further increase the convection velocity, resulting in faster temperature conduction and lower fan blade temperature.

[0013] In one embodiment, the fan blade's rotation axis is located vertically, and the heat-conducting part and heat-conducting pool are located below the fan blade. This design allows the heat-conducting part to be entirely integrated into the heat-conducting pool, resulting in a larger heat-conducting area and better heat conduction. When the rotation axis is horizontal, the heat-conducting pool needs to be located below the rotation axis, significantly reducing the heat-conducting area. If the heat-conducting pool is wrapped around the rotation axis, there is a risk of fluid leakage when the axis rotates, especially with prolonged use, inevitably leading to a significantly increased risk of wear and leakage.

[0014] In one embodiment, the fan blade's rotation axis is located in the horizontal direction, and the heat-conducting part's tube is horizontally placed. The tube and the end cap form a space to accommodate the heat-conducting pool for storing the heat exchange fluid medium. This simplifies the structure and reduces costs. When the heat-conducting part rotates at high speed with the fan blade, the heat-conducting pool also rotates at high speed. Under the action of centrifugal force, the fluid approaches and forms a ring structure that fits the tube, resulting in a larger heat exchange area and better heat exchange effect.

[0015] In one embodiment, the fan blades include a windward fan blade and a leeward fan blade, with a thermoelectric cooler disposed between them. The cold end of the thermoelectric cooler is connected to the windward fan blade, and the hot end of the thermoelectric cooler is connected to the leeward fan blade. This eliminates the need for a compressor, resulting in a simple structure and low cost. Furthermore, the rotating fan blades allow condensate to quickly detach from the blades.

[0016] In one embodiment, the fan blades are fixed to a bushing, which is equipped with a brush ring. The brush ring is connected to a brush to conduct electricity, and the brush provides power to the thermoelectric cooler. This allows power to be supplied to the rotating fan blades.

[0017] In one embodiment, the fan blade is a cross-flow fan blade, with collars at both ends and brush rings electrically connected to the brushes. Cross-flow fan blades can achieve higher rotational speeds and lower noise levels. Furthermore, the blade thickness has a smaller impact on flow resistance, allowing for better placement of the thermoelectric cooler and more efficient use of space.

[0018] In one embodiment, the dehumidifier is connected to the air outlet via an S-shaped air duct. This allows centrifugal force to separate the atomized droplets generated by the convergence of warm and cold air currents onto the air duct, resulting in better dehumidification.

[0019] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this application, nor is it intended to limit the scope of this application. Other features of this application will become readily apparent from the following description. Attached Figure Description

[0020] The above and other objects, features, and advantages of exemplary embodiments of this application will become readily apparent from the following detailed description taken in conjunction with the accompanying drawings. Several embodiments of this application are illustrated in the drawings by way of example and not limitation, in which:

[0021] In the accompanying drawings, the same or corresponding reference numerals indicate the same or corresponding parts.

[0022] Figure 1 This paper shows a perspective view of the dehumidifier with cooling fan blades according to Embodiment 1 of this application;

[0023] Figure 2 This paper shows a perspective view of the main internal components of a dehumidifier equipped with cooling fan blades according to Embodiment 1 of this application;

[0024] Figure 3 This paper shows a half-sectional schematic diagram of the main components of a dehumidifier with cooling fan blades according to Embodiment 1 of this application;

[0025] Figure 4 This paper shows a half-sectional schematic diagram of the main components of a dehumidifier with cooling fan blades according to Embodiment 2 of this application;

[0026] Figure 5 This paper shows a half-sectional schematic diagram of the main components of a dehumidifier with cooling fan blades according to Embodiment 3 of this application;

[0027] Figure 6 This paper shows a half-sectional schematic diagram of the main components of a dehumidifier with cooling fan blades according to Embodiment 4 of this application;

[0028] Figure 7 This paper shows a half-sectional schematic diagram of the main components of a dehumidifier with cooling fan blades according to Embodiment 5 of this application;

[0029] Figure 8 This paper shows a perspective view of the main components of the dehumidifier with cooling fan blades in Embodiment 6 of this application;

[0030] Figure 9 A schematic diagram of the main components of the dehumidifier with cooling fan blades in Embodiment 7 of this application is shown;

[0031] Figure 10 A schematic cross-sectional view of the S-shaped air duct of the dehumidifier equipped with cooling fan blades in Embodiment 7 of this application is shown.

[0032] Explanation of the labels in the diagram:

[0033] 1. Refrigeration unit; 2. Drive unit; 3. Fan blade; 4. Fluid medium; 5. Annular condensate collection tank; 6. Heat-conducting part; 7. Heat-conducting pool; 8. Condenser; 9. Compressor; 10. Frame; 11. Evaporator; 12. Spiral pipe; 13. Second evaporator; 14. Rotary wheel; 15. Air guide fins; 16. Housing; 17. Air inlet; 18. Air outlet; 31. Bushing; 32. Windward fan blade; 33. Leeward fan blade; 34. Semiconductor cooling chip; 35. Brush ring; 36. Shaft collar; 37. S-shaped air duct; 38. Water tank; 39. Wire guide groove; 51. Lower edge; 52. Water guide groove; 53. Drain pipe; 54. Water tank; 55. Annular condensate pool; 61. End cap; 62. Pipe body; 63. Through hole; 71. Sealing ring. Detailed Implementation

[0034] To make the objectives, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0035] Example 1:

[0036] like Figure 1 , Figure 2 and Figure 3 As shown, a dehumidifier with cooling fan blades includes a cooling unit 1, a drive unit 2, and fan blades 3. The cooling unit 1 achieves cooling through evaporative heat absorption or thermoelectricity. The cooling unit 1 directly or indirectly contacts the fan blades 3 (e.g., through a fluid medium 4) to transfer cooling energy and reduce the temperature of the fan blades 3. The drive unit 2 drives the fan blades 3 to rotate. Since the fan blades 3 need to rotate, the parts in direct contact with the fan blades 3 also need to rotate; otherwise, wear will be significant. Indirect contact can transfer heat through bearings or other parts, resulting in a certain temperature difference. Using the fluid medium 4 can reduce wear caused by solid contact, reduce rotational resistance, and allow for a larger contact area, resulting in better heat conduction and further reducing the temperature of the fan blades 3. The fluid medium 4 can be mineral oil, synthetic oil, deionized water, ethylene glycol, etc. To reduce costs, condensate can also be used directly. The fluid medium 4 can also be a gas. Since gases have poor thermal conductivity, the gap should be as small as possible to achieve relative rotation. The fan blade 3 can rotate under the drive of the drive device 2. When the fan blade 3 rotates, it can generate airflow. The cooling fan blade 3 can not only generate airflow, but also reduce the temperature.

[0037] The refrigeration device 1 can absorb heat by evaporating liquid in the evaporator 11, or use semiconductor materials to refrigerate by thermoelectric means, or use adsorption or absorption to refrigerate, or use turbine tube refrigeration. The most mature method at present is to use a compressor to compress the refrigerant and evaporate it in the evaporator 11 to achieve refrigeration. Semiconductor refrigeration is small in size and has certain advantages in the field of household dehumidifiers.

[0038] like Figure 3 As shown, in one embodiment, an annular condensate collection trough 5 is provided around the outer periphery of the fan blade 3 to collect the condensate splashed out by the rotating fan blade 3. The annular condensate collection trough 5 can be set in a horizontal or vertical direction depending on the rotation shaft. When the annular condensate collection trough 5 is set in a horizontal direction, an inclined lower edge 51 is provided at the lower end of the annular condensate collection trough 51, and a water guide groove 52 is provided on the lower edge 51 to guide the condensate to one side for easy collection. An annular water tank 54 is provided below the annular condensate collection trough 5.

[0039] like Figure 2 and Figure 3 As shown, in one embodiment, the fan blade 3 is directly or indirectly connected to the heat-conducting part 6. The heat-conducting part 6 is at least partially disposed in the heat-conducting pool 7, which contains a fluid medium 4. The refrigeration device 1 is provided with an evaporator 11, which is at least partially located within the heat-conducting pool 7. The fan blade 3 can be fixed to the bushing 31, which is connected to the heat-conducting part 6. The fan blade 3, bushing 31, and heat-conducting part 6 are all made of heat-conducting material. They can be integrally molded or assembled and fixed. Integral molding is more difficult to manufacture but has better heat conduction effect, resulting in a lower temperature for the fan blade 3.

[0040] like Figure 2 and Figure 3 As shown, in one possible embodiment, the fan blade 3 is an axial flow fan blade, capable of bidirectional rotation under the drive of the drive device 2, which is a motor controlled by a control circuit to achieve forward and reverse rotation. The number of fan blades 3 exceeds 10; for applications requiring low noise, an odd number of fan blades 3 can be designed. From a mold perspective, an even number of fan blades 3 can be designed. To increase thermal conductivity, the fan blades 3 are made of aluminum alloy, magnesium alloy, or copper alloy, and can be formed by welding or integral die casting. In addition, there are certain requirements for the width of the fan blades 3. It is necessary to ensure that multiple fan blades 3 partially overlap in the axial direction. This can ensure that the air and the fan blades 3 have more sufficient contact. When the fan blades 3 rotate at high speed, the contact time between the fan blades 3 and the air is short. Therefore, it is necessary to increase the area of ​​the fan blades 3 to quickly reduce the air temperature and further condense water vapor. However, if the density of the fan blades 3 is too high, it will increase the resistance to air flow. Therefore, the number and width of the fan blades 3, as well as the helical angle, need to be within a reasonable range. In this embodiment, the radius and pitch of the helical fan blades 3 are close to 1:1. A more reasonable radius and pitch ratio is in the range of 0.8-1.2, and the arc is 1-2. This can balance heat conduction and air flow resistance, improve the working efficiency of the dehumidifier, reduce energy consumption, and achieve energy saving.

[0041] like Figure 2 and Figure 3 As shown, in one embodiment, the rotation axis of the fan blade 3 is located in the vertical direction, and the heat-conducting part 6 and the heat-conducting pool 7 are located below the fan blade 3. The heat-conducting pool 7 is fixed in a barrel shape on the frame 10 of the dehumidifier. An opening is provided at the top of the heat-conducting pool 7, and a fluid medium 4 is provided inside the heat-conducting pool 7. If a non-volatile fluid medium 4 is used in the heat-conducting pool 7, a sealing ring 71 may not be required. However, it is necessary to ensure that the dehumidifier is always kept horizontal. Alternatively, an opening can be provided at the top of the heat-conducting pool 7 to install the sealing ring 71, which should be replaced periodically. To extend the life of the sealing ring 71, the sealing ring 71 can be designed as a sleeve shape and fitted onto the top of the heat-conducting pool 7. The sealing ring 71 rotates with the fan blade 3, and under the action of centrifugal force, the sealing ring 71 separates from the heat-conducting pool 7 and does not contact it, thereby reducing friction.

[0042] like Figure 1 As shown, the dehumidifier has a housing 16, with an air inlet 18 and an air outlet 17 at the top and bottom ends of the housing 16, respectively. The air inlet 18 and the air outlet 17 are arranged in the vertical direction. To facilitate changing the air direction, a rotor 14 is provided at the air outlet 17 at the top of the dehumidifier. The rotor 14 is provided with air guide fins 15 to guide the air direction.

[0043] like Figure 2 and Figure 3As shown, in one embodiment, the heat-conducting part 6 includes an end cap 61 and a tube body 62. The end cap 61 and the tube body 62 can be configured with a complete structure or with grooves or protrusions to increase the heat exchange area. The evaporator 11 is configured as a spiral pipe 12 located in the tube body 62 and positioned between the end cap 61 and the fan blade 3. The spiral pipe 12 can be provided with fins to increase the heat exchange effect. The end cap 61 has a through hole 63 in the center, and the connecting pipe of the evaporator 11 passes through the through hole 63 to connect with the compressor 9 and the condenser 8. The tube body 62 has spiral grooves or spiral protrusions inside, so that when the heat-conducting part 6 rotates with the fan blade 3, the fluid medium 4 flows upward under the action of the spiral grooves or spiral protrusions, impacting the bushing 31, improving the heat exchange effect, and accelerating the flow of the fluid medium 4, making the temperature more uniform, the heat conduction efficiency higher, and the temperature of the fan blade 3 lower.

[0044] like Figure 2 and Figure 3 As shown, to balance the air temperature, a condenser 8 is installed above or below the fan blades 3. The refrigerant evaporated in the evaporator 11 is compressed by the compressor 9 and then enters the condenser 8, where it releases heat to form a liquid refrigerant. When the air temperature is low, to improve the dehumidifier's efficiency, the air can first pass through the condenser 8 for heating before passing through the fan blades 3. When the air temperature is high, the air first passes through the cooled fan blades 3 before passing through the condenser 8.

[0045] Example 2:

[0046] like Figure 4 As shown, the difference from Embodiment 1 is that a cooler 13 and a condenser 8 are arranged above the fan blade 3. Considering that the fan blade 3 rotates at a relatively high speed, some condensate may flow with the air. To improve dehumidification efficiency, the cooler 13 is arranged in the direction of the air outlet of the fan blade 3. In this way, the air cooled by the fan blade 3 and the formed droplets can be adsorbed by the cooler 13. To facilitate the flow of condensate, the fins of the cooler 13 can be tilted at a certain angle to facilitate the collection of condensate. To reduce costs, the cooler 13 can also be directly replaced with ordinary fins, without the need to connect to the compressor and evaporator pipes. The fins can lower the temperature under the action of cold air and change the airflow direction, so that the droplets come into contact with the fins to form condensate, while the dry air flows around the fins.

[0047] Example 3:

[0048] like Figure 5As shown, the difference from Embodiment 1 is that the rotation axis of the fan blade 3 is located in the horizontal direction, the tube body 62 of the heat-conducting part 6 is horizontally placed, and the tube body 62 and the end cap 61 form a space to accommodate the heat-conducting pool 7, which serves as a storage space for the heat exchange fluid medium 4. The heat-conducting pool 7 and the heat-conducting part 6 form an integral structure. The fan blade 3 can rotate at high speed under the drive of the motor. At this time, the fluid medium 4 will be distributed along the tube body 62 under the action of centrifugal force. The heat exchange tubes of the evaporator 11 can achieve close-range heat exchange by spirally winding along the inner side of the tube body 62. A drain pipe 53 needs to be installed at the lower end of the annular condensate collection tank 5 to transfer the condensate to the water tank 54.

[0049] Example 4:

[0050] like Figure 6 As shown, the difference from Embodiment 3 is that the heat-conducting pool 7 and the heat-conducting part 6 are independent separate structures. In this way, the heat-conducting pool 7 is fixed, and cooling is achieved within the heat-conducting pool 7 through the evaporator 11, thereby reducing the temperature of the fluid medium 4. The heat-conducting part 6 and the fan blade 3 need to conduct heat through the central shaft, or the local size of the bushing 31 can be reduced to conduct heat through the bushing 31. The heat-conducting part 6 can be designed as a disc, with the lower half of the heat-conducting part 6 inserted into the heat-conducting pool 7 to exchange heat with the fluid medium 4. Since the heat-conducting part 6 rotates with the fan blade 3, it can circulate and contact the fluid medium 4 to conduct heat, thereby continuously reducing the temperature of the fan blade 3.

[0051] Example 5:

[0052] like Figure 7 As shown, the difference from Embodiment 3 is that the heat-conducting part 6 and the annular condensate collection tank 5 are an integral structure that can rotate synchronously. An annular condensate pool 55 is provided outside the annular condensate collection tank 5. The annular condensate collection tank 5 has a drain hole communicating with the annular condensate pool 55. An evaporator 11 is provided inside the annular condensate pool 55, achieving cooling through the evaporator 11. The lower surface of the annular condensate collection tank 5 contacts the condensate to achieve cooling, further reducing the temperature of the fan blade 3. Thus, the fan blade 3 is always kept at a low temperature close to zero degrees Celsius, resulting in good condensation effect and a simple structure. The annular condensate pool 55 is equipped with an overflow channel so that excess condensate can enter the water tank 54 for storage. When the condensate is insufficient, water can be added from the water tank 54 to the annular condensate pool 55. This ensures that the water level in the annular condensate pool 55 is maintained at a reasonable position, resulting in good dehumidification effect.

[0053] Example 6:

[0054] like Figure 8As shown, the difference from Embodiment 1 is that the fan blade 3 includes a windward fan blade 32 and a leeward fan blade 33. A semiconductor cooling chip 34 is provided between the windward fan blade 32 and the leeward fan blade 33. The evaporator 11, condenser 8 and compressor 9 are not provided. The cold end of the semiconductor cooling chip 34 is connected to the windward fan blade 32, and the hot end of the semiconductor cooling chip 34 is connected to the leeward fan blade 33. The windward side here is not the side of fan blade 3 directly facing the airflow direction. Since the fan blade 3 is a device that drives the airflow, it is not a passive rotating device. Therefore, the side facing the airflow direction is the leeward side. If the current airflow direction is from the motor to the fan blade 3, the side facing the motor is the leeward side fan blade 33, and the side facing the non-motor side is the windward side fan blade 32. The leeward side of the windward side fan blade 32 is fixed with a semiconductor cooling chip 34, and the windward side of the leeward side fan blade 33 is fixed with a semiconductor cooling chip 34. The leeward side fan blade 33 and the windward side fan blade 32 can be an integrated structure or separate independent structures.

[0055] In one embodiment, the fan blade 3 is fixed to the bushing 31, and the bushing 31 is provided with a brush ring 35. The brush ring 35 is connected to the brush to achieve conductivity. The brush provides power to the thermoelectric cooler 34. After the thermoelectric cooler 34 is energized, the temperature of the cold end decreases and the temperature of the hot end increases. This dehumidifier is small in size and has low noise. It can be equipped with a battery and is portable.

[0056] Example 7:

[0057] like Figure 9 and Figure 10 As shown, the difference from Embodiment 6 is that the fan blade 3 is a cross-flow fan blade, with a shaft ring 36 at both ends. The shaft ring 36 has a brush ring 35, which is electrically connected to the brush. The brush ring 35 can be mounted on one shaft ring 36 or, depending on the situation, on two shaft rings 36. The fan blade 3 includes a windward fan blade 32 and a leeward fan blade 33. The cold end of the thermoelectric cooler 34 is connected to the windward fan blade 32, and the hot end of the thermoelectric cooler 34 is connected to the leeward fan blade 33. Although the windward side has higher pressure, the airflow speed is relatively slower than the leeward side, resulting in better heat exchange and allowing water vapor to condense. The windward fan blade 32 and the leeward fan blade 33 are provided with wire grooves 39 to facilitate the connection of wires to the brush ring 35.

[0058] like Figure 10As shown, in one embodiment, the dehumidifier housing 16 is provided with an S-shaped air duct 37, which connects to the air outlet 17. Because the cross-flow fan has a relatively high airflow velocity, some water vapor condenses into water droplets that follow the airflow. Therefore, the S-shaped air duct 37 is needed to separate the water droplets from the air, achieving a better dehumidification effect. The S-shaped air duct 37 has at least two turning positions, causing the airflow direction to change twice. A water tank 38 is provided on the inner wall of the S-shaped air duct 37 to collect condensate. The dehumidifier motor's rotating shaft can be vertically or horizontally arranged, depending on the application scenario.

[0059] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this application can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this application can be achieved, and this is not limited herein.

[0060] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0061] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A dehumidifier provided with a refrigeration fan blade, characterized by, The device includes a refrigeration unit (1), a drive unit (2), and a fan blade (3). The refrigeration unit (1) achieves refrigeration through evaporative heat absorption. The refrigeration unit (1) and the fan blade (3) transfer cooling energy through a fluid medium (4) to reduce the temperature of the fan blade (3). The drive unit (2) can drive the fan blade (3) to rotate. The fan blade (3) has an annular condensate collection tank (5) on its outer periphery to collect the condensate splashed out by the rotating fan blade (3). The fan blade (3) is directly or indirectly connected to a heat-conducting part (6). The heat-conducting part (6) is at least partially located in the heat-conducting part. The heat-conducting pool (7) contains a fluid medium (4), and the refrigeration device (1) is provided with an evaporator (11). The evaporator (11) is located at least partially in the heat-conducting pool (7). The heat-conducting part (6) includes an end cap (61) and a tube body (62). The evaporator (11) is located in the tube body (62) and is disposed between the end cap (61) and the fan blade (3). The end cap (61) has a through hole (63) in the center. The connecting pipe of the evaporator (11) passes through the through hole (63) and is connected to the compressor (9) and the condenser (8).

2. The dehumidifier provided with a cooling fan blade according to claim 1, characterized by, The fan blade (3) is an axial flow fan blade, and the fan blade (3) can rotate in both directions under the drive of the drive device (2).

3. The dehumidifier with cooling fan blades according to claim 2, characterized in that, The rotation axis of the fan blade (3) is located in the vertical direction, and the heat-conducting part (6) and the heat-conducting pool (7) are located below the fan blade (3).

4. The dehumidifier with cooling louver according to claim 2, wherein, The rotation axis of the fan blade (3) is located in the horizontal direction, the tube body (62) of the heat-conducting part (6) is horizontally placed, and the tube body (62) and the end cap (61) form a space for storing the heat-conducting pool (7) for storing the heat exchange fluid medium (4).

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