A heat pump clothes dryer with dual functions of drying and dehumidifying

Abstract

The present invention belongs to the technical field of clothes dryers and discloses a heat pump clothes dryer for drying and dehumidifying, comprising an air duct and an evaporator and a condenser located within the air duct, an air inlet and an air outlet both connected to the outside world and the air duct, and a windshield disposed between the air inlet and the air outlet; when in dehumidification mode, the air inlet and the air outlet are both open, the windshield isolates the portion of the air duct between the air inlet and the air outlet, and outside air flows into the air duct through the air inlet and is heated by the condenser, and then is cooled by the evaporator before flowing out through the air outlet. With the above-mentioned structure, the present invention only requires the provision of an air inlet, an air outlet, and a windshield to achieve the dual functions of a heat pump clothes dryer (i.e., drying and dehumidifying), eliminating the need for additional dehumidifying equipment such as a dehumidifier, thereby saving procurement costs and preventing the indoor space from being occupied by the dehumidifying equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of clothes dryers, and in particular to a heat pump clothes dryer for drying and dehumidifying. Background Art

[0002] As people's living standards gradually improve, clothes dryers have begun to enter people's lives and play an important role in their lives. However, existing clothes dryers can only dry clothes and have a single function. In areas with continuous humid weather such as the return of the south wind and the plum rain season, as well as in many coastal areas, not only is it difficult to dry clothes, but the humid indoor environment also brings certain problems to users. Long-term humid environments can easily breed bacteria, causing skin and respiratory infections, and also cause mold growth in the home, which is detrimental to people's health. Therefore, to solve the above problems, some people buy dehumidifiers to dehumidify indoors, but purchasing dehumidifiers is expensive and requires indoor space. Summary of the Invention

[0003] The object of the present invention is to provide a heat pump clothes dryer for drying and dehumidifying, which can dry clothes and dehumidify the room at the same time.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] A heat pump clothes dryer for drying and dehumidifying, comprising an air duct and an evaporator and a condenser located within the air duct, characterized in that it further comprises an air inlet and an air outlet both communicating with the outside and the air duct, and a windshield disposed between the air inlet and the air outlet;

[0006] When in dehumidification mode, the air inlet and the air outlet are both opened, and the wind shield separates part of the air duct between the air inlet and the air outlet. The outside air flows into the air duct through the air inlet and is heated by the condenser, and is then cooled by the evaporator and flows out through the air outlet.

[0007] Preferably, the windshield is fixed with a rotating shaft and is rotatably arranged in the air duct via the rotating shaft.

[0008] Preferably, a first limit block and a second limit block are provided in the air duct, and when the wind shield blocks part of the air duct, the ends of the wind shield located on both sides of the rotating shaft respectively abut against the first limit block and the second limit block.

[0009] Preferably, the first limit block is longitudinally arranged above the second limit block, and the distance from the axis of the rotating shaft to the second limit block is greater than the distance from the axis of the rotating shaft to the first limit block.

[0010] Preferably, a third limiting block is provided in the air duct, and when the wind shield rotates until one end abuts against the third limiting block, the portion of the air duct between the air inlet and the air outlet is connected.

[0011] Preferably, the position of the air outlet along the longitudinal direction is higher than the position of the air inlet along the longitudinal direction.

[0012] Preferably, the air duct further comprises a first sealing sheet and a second sealing sheet disposed in the air duct, wherein the first sealing sheet is configured to close and open the air inlet, and the second sealing sheet is configured to close and open the air outlet.

[0013] Preferably, it also includes a drive assembly, which includes a dual-axis drive motor, a driving gear and a worm driven by the dual-axis drive motor, a first driven gear and a second driven gear engaged on both sides of the driving gear, the first driven gear is connected to a first rotating rod, the first rotating rod is connected to the first sealing plate, the second driven gear is connected to a second rotating rod, the second rotating rod is connected to the second sealing plate, the worm gear is connected to a worm wheel, and the worm wheel is fixed to the rotating shaft.

[0014] Preferably, the invention further comprises a first driving member and a second driving member, wherein the first driving member is drivingly connected to the windshield plate, and the second driving member is drivingly connected to the first sealing sheet and the second sealing sheet.

[0015] Preferably, a dehumidification shell is provided in the air duct, and the dehumidification shell is arranged between the evaporator and the condenser, and the side of the dehumidification shell facing the evaporator and the condenser is connected to the air duct, and the air inlet, the air outlet and the wind shield are all arranged on the dehumidification shell.

[0016] The beneficial effects of the present invention are as follows: when dehumidifying the room, by opening the air inlet and the air outlet, and at the same time blocking part of the air duct by a windshield, the outside air flows into the air duct through the air inlet and is heated by the condenser, and then is cooled by the evaporator to form dry air, and then flows into the room through the air outlet. When it is necessary to dry clothes, the air inlet and the air outlet are closed, and at the same time, the action of the windshield makes the blocked part of the air duct conductive, and then normal clothes drying can be carried out. Through the above structure, the present invention only needs to set up the air inlet, the air outlet and the windshield to realize the dual-purpose function of the heat pump dryer (i.e., drying clothes and dehumidifying), without the need to add additional dehumidifying equipment such as a dehumidifier, thus saving procurement costs, and not occupying indoor space due to the purchase of dehumidifying equipment. Moreover, the present invention only needs the heat pump system of the heat pump dryer itself to realize the dehumidification function, without the need to add other functional components, further reducing the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1This is a top cross-sectional view of the heat pump clothes dryer for drying and dehumidifying provided in the first embodiment of the present invention, with the drum removed;

[0018] Figure 2 This is a partial front view showing the air inlet, air outlet, and wind shield provided by the first embodiment of the present invention;

[0019] Figure 3 This is a partial top view showing the air inlet, air outlet, and wind shield provided by the first embodiment of the present invention;

[0020] Figure 4 This is a partial front view showing the air inlet, air outlet, and wind shield provided by the second embodiment of the present invention;

[0021] Figure 5 It is a partial top view showing the air inlet, air outlet and wind shield provided by the second embodiment of the present invention.

[0022] In the picture:

[0023] 1. Evaporator; 2. Condenser; 3. Air inlet; 4. Air outlet; 5. Wind shield; 6. Rotating shaft; 7. First limit block; 8. Second limit block; 9. Third limit block; 10. Fourth limit block; 11. First sealing plate; 12. Second sealing plate; 13. Dual-axis drive motor; 14. Driving gear; 15. Worm; 16. First driven gear; 17. Second driven gear; 18. First rotating rod; 19. Second rotating rod; 20. Worm gear; 21. Dehumidification housing. DETAILED DESCRIPTION

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0025] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0026] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0027] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meanings.

[0028] Example 1

[0029] This embodiment provides a heat pump clothes dryer with both drying and dehumidification functions, which features a drying mode and a dehumidification mode. The components used in the drying mode are all conventional, including a heat pump system comprising a compressor, an evaporator 1, a throttling element, and a condenser 2, which are interconnected in sequence. The evaporator 1 and the condenser 2 are located within a single air duct, and the heat pump system is used to dry clothes. The dehumidification mode primarily dehumidifies indoor humid air, utilizing the evaporator 1 and condenser 2 used for the drying function.

[0030] like Figure 1-3 As shown, the drying and dehumidifying dual-purpose heat pump dryer of this embodiment includes, in addition to an air duct and an evaporator 1 and a condenser 2 located in the air duct, an air inlet 3, an air outlet 4 and a wind shield 5, wherein the air inlet 3 and the air outlet 4 are both connected to the outside (i.e., indoors) and the air duct to realize the inflow of outside air into the air duct and the outflow of air in the air duct to the outside.

[0031] In this embodiment, the air inlet 3 and air outlet 4 can be directly located in the air duct. In this case, the air inlet 3 and air outlet 4 can be connected to the outside world via a pipe. Specifically, a through hole is provided in the housing of the heat pump dryer, and one end of the pipe passes through the through hole and connects to the air inlet 3 or air outlet 4, while the other end directly connects to the outside world. Preferably, the pipe can be located at the bottom of the heat pump dryer, or installed in a non-embedded manner. It should be noted that the ends of the pipe connecting the air inlet 3 and the pipe connecting the air outlet 4 should be spaced a certain distance apart to prevent air discharged from the air outlet 4 from directly entering the air inlet 3 and affecting the subsequent dehumidification effect. In this embodiment, the pipe connecting the air inlet 3 can be located on the side of the bottom of the heat pump dryer close to the wall, while the pipe connecting the air outlet 4 can be located on the side of the bottom of the heat pump dryer facing the room.

[0032] Preferably, the air duct is further provided with a first sealing sheet 11 and a second sealing sheet 12, wherein the first sealing sheet 11 is configured to close and open the air inlet 3, and the second sealing sheet 12 is configured to close and open the air outlet 4. That is, when the heat pump dryer is in the drying mode, the first sealing sheet 11 closes the air inlet 3 and the second sealing sheet 12 closes the air outlet 4, and the heat pump dryer dries clothes via the heat pump system. When the heat pump dryer is in the dehumidifying mode, the first sealing sheet 11 opens the air inlet 3 and the second sealing sheet 12 opens the air outlet 4, allowing moist indoor air to enter the air duct and the heat pump dryer to perform dehumidification.

[0033] Furthermore, the first sealing sheet 11 and the second sealing sheet 12 are both rotatably disposed within the air duct, thereby reducing the space occupied outside the air duct. When the air inlet 3 and the air outlet 4 are opened, the first sealing sheet 11 and the second sealing sheet 12 are both rotated 180 degrees, thereby preventing the first sealing sheet 11 and the second sealing sheet 12 from creating resistance to air flow, thereby reducing the wind resistance caused by the arrangement of the first sealing sheet 11 and the second sealing sheet 12. Furthermore, when the clothes drying function is in effect, the first sealing sheet 11 and the second sealing sheet 12 are disposed within the air duct and, under the influence of wind pressure, are automatically pressed against the sidewalls of the air duct to better seal the air inlet 3 and the air outlet 4, preventing air in the air duct from leaking through the air inlet 3 or the air outlet 4, thereby ensuring a drying effect.

[0034] The air inlet 3 and air outlet 4 may be circular structures, and the corresponding first sealing sheet 11 and second sealing sheet 12 may also be circular plate-shaped structures, and the areas of the first sealing sheet 11 and second sealing sheet 12 are larger than the areas of the corresponding air inlet 3 and air outlet 4. In addition, to achieve a better sealing effect, this embodiment may also be provided with a sealing strip (not shown in the figure) on the first sealing sheet 11 and second sealing sheet 12, so that when the first sealing sheet 11 and second sealing sheet 12 seal the air inlet 3 and air outlet 4, a portion of the sealing strip can be embedded in the air inlet 3 and air outlet 4, thereby achieving the purpose of completely preventing air leakage.

[0035] Preferably, in order to better ensure that the indoor air can enter the air duct, this embodiment can also provide a blower at the air inlet 3, or an exhaust fan at the air outlet 4, so as to drive the indoor air and ensure the dehumidification effect.

[0036] like Figure 2 and Figure 3 As shown, the windshield 5 is disposed between the air inlet 3 and the air outlet 4. It can partially block the air duct between the air inlet 3 and the air outlet 4 during dehumidification. Consequently, during dehumidification, moist air entering the air duct through the air inlet 3 does not flow directly out of the air outlet 4. During dehumidification, the heat pump dryer of this embodiment, which is used for drying and dehumidifying, flows into the air duct through the air inlet 3, flows to the condenser 2, and is heated by the condenser 2. The heated air then flows to the evaporator 1 and is cooled by the evaporator 1. Condensed water is generated during the cooling process, and the cooled air then flows into the room through the air outlet 4, completing the dehumidification of the moist air. By first heating the air through the condenser 2 and then cooling the heated air through the evaporator 1, this embodiment can further increase the relative temperature difference between the front and back of the air, allowing the moisture in the air cooled by the evaporator 1 to condense more thoroughly and be extracted more completely, thereby achieving better dehumidification of the indoor air. Moreover, in this embodiment, the air is first heated by the condenser 2 and then cooled by the evaporator 1, rather than first passing through the evaporator 1 and then passing through the condenser 2. This is because in the structure of the dryer in the prior art, the space on the condenser side is very small and insufficient to accommodate the above-mentioned air inlet 3, air outlet 4, wind shield 5 and other structures.

[0037] It is understood that, in one embodiment, the windshield 5 can be slidably placed in the air duct, that is, it can slide relative to the air duct, thereby achieving the purpose of blocking or opening the air duct by sliding. Of course, during the sliding process, it is necessary to ensure the sealing between the windshield 5 and the air duct to prevent air leakage.

[0038] In another embodiment, Figure 2As shown, the windshield 5 is rotatably arranged in the air duct. Specifically, the windshield 5 can be fixed with a rotating shaft 6 and rotatably connected to the air duct via the rotating shaft 6. When the air duct needs to be blocked, the windshield 5 is rotated until its plate surface is perpendicular to the air flow direction in the air duct, and the air duct can be blocked. The rotating shaft 6 of the windshield 5 is perpendicular to the air flow direction in the air duct, which can be as follows Figure 3 The longitudinal direction shown can also be the front-to-back direction, both of which can achieve the isolation of the air duct.

[0039] A first limit block 7 and a second limit block 8 are provided in the air duct. When the windshield 5 blocks part of the air duct, the ends of the windshield 5 on both sides of the rotating shaft 6 abut against the first limit block 7 and the second limit block 8 respectively. That is to say, when the windshield 5 rotates to block the air duct, its two ends are respectively limited by the first limit block 7 and the second limit block 8 to avoid excessive rotation of the windshield 5, which results in failure to completely block the air duct. Preferably, the ends of the windshield 5 are in surface contact with the first limit block 7 and the second limit block 8, so that the contact position of the windshield 5 with the first limit block 7 and the second limit block 8 is also in a sealed state, further achieving the purpose of completely blocking the air duct. Figure 2 As shown, when the ends of the windshield 5 on both sides of the rotating shaft 6 abut against the first limit block 7 and the second limit block 8 respectively, one end thereof abuts against the right side of the first limit block 7 and the other end abuts against the left side of the second limit block 8.

[0040] More preferably, the first limit block 7 is longitudinally arranged above the second limit block 8, and the distance from the axis of the rotating shaft 6 to the second limit block 8 is greater than the distance from the axis of the rotating shaft 6 to the first limit block 7, thereby making the area of ​​the upper part of the wind shield 5 divided by the rotating shaft 6 smaller than the area of ​​the lower part. Through this configuration, compared to a configuration in which the shaft 6 is positioned at one end of the windshield 5, this embodiment can reduce the space required for the windshield 5 to rotate, and will not interfere with the air inlet 3 or the air outlet 4 during rotation. Compared to a configuration in which the shaft 6 is positioned at the exact center of the windshield 5, when the windshield 5 of this embodiment rotates to abut the first and second stoppers 7 and 8, that is, when the windshield 5 rotates to the longitudinal direction, the wind pressure from the evaporator 1 is simultaneously applied to both the upper and lower portions of the windshield 5 located at the shaft 6. Since the lower portion has a larger area, it is also subjected to greater wind pressure, thereby achieving a tighter surface contact between the windshield 5 and the first and second stoppers 7 and 8, further improving the sealing and partitioning effect of the windshield 5 and ensuring partitioning reliability. It should be further noted that, in this embodiment, at least the surfaces of the first and second stoppers 7 and 8 that contact the windshield 5 are elastic, thereby ensuring more complete contact when the windshield 5 abuts the first and second stoppers 7 and 8, thereby improving the sealing effect.

[0041] In this embodiment, preferably, the position of the air outlet 4 along the longitudinal direction is higher than the position of the air inlet 3 along the longitudinal direction, that is, Figure 2 As shown, the air outlet 4 is arranged at the upper end of the side wall of the air duct, and the air inlet 3 is arranged at the lower end of the side wall of the air duct. This structural arrangement can prevent the air inlet 3 and the air outlet 4 from interfering with the wind shield 5.

[0042] It is understandable that in this embodiment, a third limit block 9 may be provided in the air duct. Figure 2 The horizontal direction shown is set on the side close to the air inlet 3. When the wind shield 5 rotates to one end and abuts against the third limit block 9, part of the air duct between the air inlet 3 and the air outlet 4 is connected, that is, the wind shield 5 will no longer block the air duct. At this time, the drying and dehumidifying dual-purpose heat pump dryer is usually performing the drying operation. The air in the drying and dehumidifying dual-purpose heat pump dryer drum circulates and will not be disturbed by the wind shield 5, ensuring that the wind shield 5 has minimal interference with the air flow, that is, reducing wind resistance, and thus improving the drying efficiency.

[0043] Furthermore, this embodiment can also be Figure 2 A fourth stopper 10 is provided horizontally on the side near the air outlet 4. The line connecting the third and fourth stoppers 9 and 10 is perpendicular to the line connecting the first and second stoppers 7 and 8. When the windshield 5 rotates until one end abuts the third stopper 9, the other end abuts the fourth stopper 10, effectively securing the windshield 5. Preferably, the third and fourth stoppers 9 and 10 are connected horizontally to minimize interference with air flow.

[0044] In this embodiment, the rotation of the windshield plate 5, the first sealing plate 11 and the second sealing plate 12 are all driven by the driving assembly. For example, Figure 2 as well as Figure 3 As shown, the drive assembly includes a dual-axis drive motor 13, the two output shafts of which are arranged longitudinally, and the output shaft at the upper end is connected to a driving gear 14. A first driven gear 16 and a second driven gear 17 are provided on either side of the driving gear 14. The first driven gear 16 is connected to a first rotating rod 18, which is connected to the first sealing plate 11. The second driven gear 17 is connected to a second rotating rod 19, which is connected to the second sealing plate 12. The dual-axis drive motor 13 drives the driving gear 14 to rotate, which in turn drives the first driven gear 16 and the second driven gear 17 to rotate synchronously and in the same direction, thereby enabling the first sealing plate 11 and the second sealing plate 12 to rotate simultaneously, thereby opening or closing the air inlet 3 and the air outlet 4.

[0045] The output shaft at the lower end of the dual-axis drive motor 13 is connected to a worm 15, and the worm 15 is transmission-connected to a worm wheel 20. The worm wheel 20 is fixed to the rotating shaft 6, so that when the dual-axis drive motor 13 drives the worm 15 to rotate, the worm wheel 20 can drive the rotating shaft 6 and the windshield 5 to rotate. In this embodiment, it is preferred to use the structure of the worm 15 and the worm wheel 20 to realize the rotation of the windshield 5. When the windshield 5 rotates to the limit position (i.e., the first limit block 7 or the third limit block 9), the characteristics of the worm wheel 20 and the worm 15 determine that the worm 15 will play a limiting and locking role on the worm wheel 20, ensuring that the windshield 5 is in the correct position, and it fits tightly when the air duct needs to be sealed and blocked, and when the air duct needs to be opened, the air flows without resistance.

[0046] In this embodiment, the aforementioned drive assembly can simultaneously drive the windshield 5, the first sealing sheet 11, and the second sealing sheet 12 to rotate. Consequently, during dehumidification, the air inlet 3 and the air outlet 4 can be simultaneously opened, and the windshield 5 can be simultaneously rotated to a position blocking the air duct. This improves the response speed of the windshield 5, the first sealing sheet 11, and the second sealing sheet 12. Furthermore, this embodiment utilizes only a single dual-axis drive motor 13 to achieve rotation of the windshield 5, the first sealing sheet 11, and the second sealing sheet 12, thereby reducing the manufacturing cost of the entire dual-purpose heat pump clothes dryer for drying and dehumidification.

[0047] In addition, by designing the transmission ratio of the worm 15 and the worm wheel 20, when the worm 15 and the worm wheel 20 drive the windshield 5 to rotate, the worm wheel 20 only needs to rotate 1 / 4 of a turn, and the windshield 5 can rotate 90°, while the first sealing plate 11 and the second sealing plate 12 will rotate 180°.

[0048] As a preferred technical solution, the above-mentioned dual-axis drive motor 13 can be a torque motor, and when it drives the wind shield 5 to rotate to the limit position (i.e., the first limit block 7 or the third limit block 9), the resistance encountered by the wind shield 5 will be transmitted to the torque motor, and at this time the torque motor can be immediately powered off and stopped running.

[0049] When the drying and dehumidifying dual-purpose heat pump dryer of this embodiment is in use, its initial state is the state of drying mode. At this time, the air inlet 3 is closed by the first sealing plate 11, the air outlet 4 is closed by the second sealing plate 12, and the wind shield 5 rotates to abut against the third limit block 9 and the fourth limit block 10.

[0050] When dehumidifying the room, the drive assembly drives the first sealing plate 11 to open the air inlet 3, the second sealing plate 12 to open the air outlet 4, and the windshield 5 rotates to abut against the first limit block 7 and the second limit block 8, thereby isolating the portion of the air duct between the air inlet 3 and the air outlet 4. Subsequently, the indoor humid air can flow into the air duct through the air inlet 3 and be heated by the condenser 2, then be cooled by the evaporator 1 to form dry air, and then flow into the room through the air outlet 4. After a certain period of circulation, the indoor dehumidification is completed. Preferably, when dehumidifying, the drum of the dual-purpose heat pump clothes dryer for drying and dehumidifying can stop rotating to achieve the purpose of energy saving.

[0051] When the dehumidification mode is turned off, the first sealing plate 11 is driven by the driving component to close the air inlet 3, the second sealing plate 12 is driven to close the air outlet 4, and the wind shield 5 is rotated to abut against the third limit block 9 and the fourth limit block 10 to open part of the air duct between the air inlet 3 and the air outlet 4, that is, to restore to the state of the drying mode.

[0052] The dual-purpose heat pump clothes dryer for drying and dehumidifying of this embodiment only requires an air inlet 3, an air outlet 4, and a windshield 5 to achieve the dual functions of a heat pump clothes dryer (i.e., drying and dehumidifying). This eliminates the need for additional dehumidifying equipment such as a dehumidifier, thus reducing procurement costs and eliminating the need for indoor space. Furthermore, this embodiment only requires the heat pump dryer's own heat pump system to achieve the dehumidification function, eliminating the need for additional functional components, further reducing operating costs.

[0053] Example 2

[0054] The difference between this embodiment and the first embodiment is that the air inlet 3, the air outlet 4, the wind shield 5, the first limit block 7, the second limit block 8, the third limit block 9, the fourth limit block 10, the first sealing sheet 11, the second sealing sheet 12 and the driving assembly are integrated into an integral component, and then the integral component is placed in the air duct. Figure 4 and Figure 5 The dual-purpose heat pump clothes dryer for drying and dehumidifying of this embodiment has a dehumidification housing 21 disposed within the air duct. The air inlet 3, air outlet 4, windshield 5, first stopper 7, second stopper 8, third stopper 9, fourth stopper 10, first sealing sheet 11, second sealing sheet 12, and drive assembly are all disposed on the dehumidification housing 21. By integrating the components into a single unit, the structure required for the dehumidification mode of this embodiment can be detachable, facilitating repair and replacement in the event of a problem.

[0055] The two ends of the above-mentioned dehumidification shell 21 are respectively connected to the air duct, so that the indoor humid air enters the dehumidification shell 21 through the air inlet 3, flows to the condenser 2 and is heated by the condenser 2, and the air cooled by the evaporator 1 can enter the dehumidification shell 21 and flow out from the air outlet 4.

[0056] It should be noted that in this embodiment, the driving gear 14, the first driven gear 16 and the second driven gear 17 of the above-mentioned driving component group are arranged on the outside of the dehumidification shell 21 to avoid interference with air flow when they are arranged inside the dehumidification shell 21.

[0057] The remaining structures of this embodiment are the same as those of the first embodiment and will not be described in detail.

[0058] Example 3

[0059] This embodiment offers structural improvements over the first or second embodiments. Specifically, rather than using a drive assembly to simultaneously drive the rotation of the windshield 5, the first sealing sheet 11, and the second sealing sheet 12, this embodiment provides a first drive assembly and a second drive assembly. The first drive assembly is drivably connected to the windshield 5 to drive the rotation of the windshield 5, and the second drive assembly is drivably connected to the first sealing sheet 11, 12 to drive the rotation of the first sealing sheet 11, 12. This structure of this embodiment separates the rotation of the windshield 5 from the rotation of the first sealing sheet 11, 12. If a problem occurs in one of these components, only the problematic component can be repaired or replaced without affecting the components that are not affected.

[0060] The first driving member may be a torque motor, and the second driving member may be a structure in which the torque motor drives a gear. Of course, other structures that can realize the rotation of the first sealing plate 11 and the second sealing plate 12 may also be used. Alternatively, two second driving members may be provided, one drivingly connected to the first sealing plate 11, and the other drivingly connected to the second sealing plate 12.

[0061] The remaining structures of this embodiment are the same as those of the first or second embodiment and will not be described in detail.

[0062] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A heat pump clothes dryer for drying and dehumidifying, comprising an air duct and an evaporator (1) and a condenser (2) located in the air duct, characterized in that: It also includes an air inlet (3) and an air outlet (4) both of which are connected to the outside world and the air duct, and a windshield (5) arranged between the air inlet (3) and the air outlet (4); When in dehumidification mode, the air inlet (3) and the air outlet (4) are both open, and the wind shield (5) blocks a portion of the air duct between the air inlet (3) and the air outlet (4). External air flows into the air duct through the air inlet (3) and is heated by the condenser (2), and then is cooled by the evaporator (1) and flows out through the air outlet (4). A dehumidification shell (21) is provided in the air duct, and the dehumidification shell (21) is arranged between the evaporator (1) and the condenser (2), and the side of the dehumidification shell (21) facing the evaporator (1) and the condenser (2) is connected to the air duct, and the air inlet (3), the air outlet (4) and the wind shield (5) are all arranged on the dehumidification shell (21).

2. The heat pump clothes dryer for drying and dehumidifying according to claim 1, characterized in that: The windshield (5) is fixed with a rotating shaft (6) and is rotatably arranged in the air duct via the rotating shaft (6).

3. The heat pump clothes dryer for drying and dehumidifying according to claim 2, characterized in that: A first limiting block (7) and a second limiting block (8) are provided in the air duct. When the wind shield (5) blocks part of the air duct, the ends of the wind shield (5) located on both sides of the rotating shaft (6) abut against the first limiting block (7) and the second limiting block (8) respectively.

4. The heat pump clothes dryer for drying and dehumidifying according to claim 3, characterized in that: The first limiting block (7) is arranged above the second limiting block (8) in the longitudinal direction, and the distance from the axis of the rotating shaft (6) to the second limiting block (8) is greater than the distance from the axis of the rotating shaft (6) to the first limiting block (7).

5. The heat pump clothes dryer for drying and dehumidifying according to claim 2, characterized in that: A third limiting block (9) is provided in the air duct, and when the wind shield (5) rotates until one end abuts against the third limiting block (9), the portion of the air duct between the air inlet (3) and the air outlet (4) is connected.

6. The heat pump clothes dryer for drying and dehumidifying according to claim 2, characterized in that: The position of the air outlet (4) in the longitudinal direction is higher than the position of the air inlet (3) in the longitudinal direction.

7. The heat pump clothes dryer for drying and dehumidifying according to any one of claims 2 to 6, characterized in that: It also includes a first sealing sheet (11) and a second sealing sheet (12) arranged in the air duct, wherein the first sealing sheet (11) is configured to close and open the air inlet (3), and the second sealing sheet (12) is configured to close and open the air outlet (4).

8. The heat pump clothes dryer for drying and dehumidifying according to claim 7, characterized in that: The invention also includes a driving assembly, which includes a dual-axis driving motor (13), a driving gear (14) and a worm (15) driven to rotate by the dual-axis driving motor (13), a first driven gear (16) and a second driven gear (17) meshed on both sides of the driving gear (14), the first driven gear (16) is connected to a first rotating rod (18), the first rotating rod (18) is connected to the first sealing plate (11), the second driven gear (17) is connected to a second rotating rod (19), the second rotating rod (19) is connected to the second sealing plate (12); the worm (15) is transmission-connected to a worm wheel (20), and the worm wheel (20) is fixed to the rotating shaft (6).

9. The heat pump clothes dryer for drying and dehumidifying according to claim 7, characterized in that: It also includes a first driving member and a second driving member, wherein the first driving member is drivingly connected to the windshield (5), and the second driving member is drivingly connected to the first sealing sheet (11) and the second sealing sheet (12).

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