Clothes drying apparatus

Abstract

The disclosure provides a clothes drying device, and relates to the technical field of household appliances. The clothes drying device comprises a box body, an outer cylinder, an inner cylinder, a drying air duct, a cooling air duct and a cooling mechanism arranged in the box body. The inner side of the rear end wall of the outer cylinder is provided with an air return port and the cooling air duct, and the cooling air duct adopts a double-channel design independent of each other. The inner cylinder has a drying cavity. The drying air duct can provide drying gas, and forms an air circulation loop with the double channels of the cooling air duct, the air return port and the drying cavity. The cooling mechanism provides cooling liquid into the cooling air duct. In the above technical solution, the wet and hot air from the inner cylinder can be forced into the double channels by the action of the fan, so that the wet and hot air is in full contact with the cooling liquid, the water content in the wet and hot air is greatly reduced, the wet and hot air becomes dry and cold air with low water content, the dehumidification efficiency of the wet and hot air is improved, and the demand for rapid clothes drying is met.

Description

Technical Field

[0001] This disclosure relates to the field of household appliance technology, and in particular to a clothes drying device. Background Technology

[0002] With social progress and technological development, clothes dryers have become common household appliances. As living standards improve at a fast pace, people are using clothes dryers more and more frequently and have higher and higher requirements for their drying performance.

[0003] Currently, most clothes drying equipment on the market dehumidifies the air by exchanging heat through contact between a cooling medium and the humid air inside the equipment. However, during the dehumidification process, the contact between the cooling medium and the humid air is insufficient, resulting in low dehumidification efficiency and failing to meet the demand for rapid clothes drying. Utility Model Content

[0004] In view of this, the purpose of this disclosure is to provide a clothes drying device that improves the technical problem of low dehumidification efficiency in the prior art.

[0005] To achieve at least one of the above objectives, this disclosure provides the following technical solutions:

[0006] In a first aspect, a clothes drying device is provided, including a housing, an outer drum, an inner drum, a drying air duct, a cooling air duct, and a cooling mechanism; the outer drum is disposed inside the housing, and a return air vent is provided on the inner side of the outer drum; the inner drum is rotatably disposed inside the outer drum, and a drying chamber capable of accommodating clothes is formed inside the inner drum, the cavity between the inner drum and the outer drum is a first cavity, and the drying chamber is connected to the return air vent through the first cavity; the drying air duct is disposed outside the outer drum, one end of the drying air duct is connected to the return air vent, and the other end of the drying air duct is connected to the drying chamber; the drying air duct is equipped with... The system is designed to supply gas for drying clothes into the drying chamber and to draw gas from the first chamber through a return air vent. A cooling duct is formed on the rear end wall of the outer cylinder facing the inner cylinder, and a return air vent is formed within the inner cavity of the cooling duct. A partition is provided inside the cooling duct to divide its inner cavity into a first duct cavity and a second duct cavity, and to divide the return air vent into a first return air vent and a second return air vent. The first duct cavity is connected to the first return air vent, and the second duct cavity is connected to the second return air vent. The cooling duct includes a first air inlet, a second air inlet, and a first... The cooling mechanism includes a first water outlet, a second water outlet, and a drain outlet; a first air inlet connects the first cavity and the first air duct cavity, allowing the first cavity to be connected to the first return air outlet via the first air duct cavity; a second air inlet connects the first cavity and the second air duct cavity, allowing the first cavity to be connected to the second return air outlet via the second air duct cavity; a first water outlet is connected to the first air duct cavity; a second water outlet is connected to the second air duct cavity; the cooling mechanism includes a first liquid inlet, a second liquid inlet, and a drain outlet; the first liquid inlet is configured to supply coolant to the first air duct cavity; the second liquid inlet is configured to supply coolant to the second air duct cavity. Coolant; the drain port is located at the bottom of the outer cylinder; under the suction of the drying air duct, the gas in the drying chamber enters the first air duct cavity through the first cavity and the first air inlet, and enters the second air duct cavity through the first cavity and the second air inlet, and flows back to the drying air duct from the first return air inlet and the second return air inlet respectively; wherein, the gas entering the first air duct cavity and the second air duct cavity comes into contact with the coolant, causing the water vapor in the gas to be condensed into condensate, and the condensate and coolant are collected at the drain port through the first outlet and the second outlet, and discharged from the outer cylinder.

[0007] In the above technical solution, a cooling air duct is provided on the side of the rear end wall of the outer cylinder facing the inner cylinder. This cooling air duct is connected to the first cavity and the return air inlet. With the action of the fan in the drying air duct, the humid and hot air coming out of the inner cylinder can be forced to reach the inner cavity of the cooling air duct through the first cavity, the first air inlet and the second air inlet. The inner cavity of the cooling air duct is supplied with coolant by the cooling mechanism, so that the humid and hot air can come into full contact with the coolant. The coolant cools the humid and hot air, so that the water vapor in the humid and hot air is quickly condensed into water and discharged, which can greatly reduce the moisture content in the humid and hot air, turning the humid and hot air into dry and cold air with low moisture content, thereby improving the dehumidification efficiency of the humid and hot air. After the dry and cold air enters the drying air duct through the return air inlet, it can be heated into dry and hot air with low moisture content. The dry and hot air can continue to dry the clothes, which is conducive to the evaporation of moisture in the clothes, thereby improving the drying efficiency, shortening the drying time and increasing the speed of drying clothes. Furthermore, the inner cavity of the cooling air duct is divided into two air duct chambers by a separator, namely the first air duct chamber and the second air duct chamber. These two air duct chambers can independently guide the gas in the drying chamber back into the drying air duct. It can be regarded as having two independent cooling air ducts inside the outer cylinder. Using two independent cooling air ducts to cool the flowing hot and humid air can greatly improve the condensation efficiency of water vapor in the hot and humid air in the drying equipment, and reduce the moisture content in the hot and humid air in a large amount and rapidly, which is beneficial to increasing the drying speed of clothes. Under the action of the separator, the airflow in the two air duct chambers is separated, which can prevent the gas in the two air duct chambers from entering each other's internal cavities, and can guide the gas in the two air duct chambers to enter the drying air duct through the first return air port and the second return air port respectively, thereby increasing the gas flow speed in the drying equipment, increasing the flow of hot and dry air, and thus increasing the drying speed of clothes. Furthermore, because the separator divides the return air inlet into two inlets, namely the first return air inlet and the second return air inlet, which are connected to the two air duct cavities respectively, the fan in the drying air duct simultaneously performs suction operations on both air duct cavities during operation. The suction force of the fan is distributed between the two air duct cavities, making the airflow in each air duct cavity relatively weaker. The flow speed of the humid and hot air in the two air duct cavities is slowed down, which helps the humid and hot air to fully contact and exchange heat with the coolant in the two air duct cavities, improves the condensation efficiency of water vapor in the humid and hot air, and thus increases the drying speed of clothes. At the same time, the weakened airflow in the two air duct cavities can also prevent condensate and coolant from being sucked into the drying air duct with the airflow under the action of the fan, which would corrode the drying air duct and affect the humidity of the gas in the drying air duct. In addition, the condensed water and coolant can be discharged in time through the first and second water outlets to prevent the condensed water and coolant from being in the inner cavity of the cooling air duct for a long time and evaporating into water vapor, thereby affecting the humidity of the gas entering the drying air duct.

[0008] In some embodiments, the cooling duct includes a groove and a cover plate; the groove is recessed into the rear end wall of the outer cylinder facing the inner cylinder in a direction away from the inner cylinder; the cover plate is laid at the opening of the groove, and the space between the cover plate and the groove forms the inner cavity of the cooling duct; a partition is disposed in the groove to divide the groove into a first groove and a second groove, the space enclosed by the first groove, the partition and the cover plate forms a first duct cavity, and the space enclosed by the second groove, the partition and the cover plate forms a second duct cavity; a return air inlet is formed in the groove; the partition extends to the return air inlet to divide the return air inlet into a first return air inlet and a second return air inlet.

[0009] In the above technical solution, the cooling air duct is formed by a groove and a cover plate. The groove is recessed on the rear end wall of the outer cylinder in the direction away from the inner cylinder, and the cover plate is laid at the groove opening. This design does not occupy too much space between the rear end wall of the outer cylinder and the rear end of the inner cylinder, which can save installation space and facilitate the reasonable assembly between the outer cylinder and the inner cylinder. It can make the structural layout of the entire drying equipment in the front and rear direction of the box more compact and reasonable.

[0010] In some embodiments, a rotating shaft assembly is provided on the side of the inner cylinder facing the rear end wall of the outer cylinder, the rotating shaft assembly being configured to cause the inner cylinder to rotate inside the outer cylinder; a mounting hole for the rotating shaft assembly to pass through is provided on the rear end wall of the outer cylinder; a groove extends circumferentially around the mounting hole and surrounds the outer periphery of the mounting hole, and at least a portion of the groove surrounds the upper part of the mounting hole.

[0011] In the above technical solution, the groove is formed on the inner side of the rear end wall of the outer cylinder and surrounds the outer periphery of the mounting hole, so that the groove can have a larger layout area under reasonable conditions, thereby making the layout space of the cooling air duct larger, so as to draw in more humid and hot air to fully contact and exchange heat with the coolant, improve the condensation efficiency of water vapor in the humid and hot air, and reduce the moisture content in the humid and hot air in a large amount and rapidly, which is beneficial to improving the drying speed of clothes.

[0012] In some embodiments, the cover plate blocks part of the groove opening, so that the part of the groove opening not blocked by the cover plate forms a first air inlet and a second air inlet.

[0013] In the above technical solution, the part of the groove that is not covered by the cover plate is used as the first air inlet and the second air inlet. That is, the first air inlet and the second air inlet are both part of the groove structure, which does not require additional processing on the cover plate. This simplifies the process and avoids affecting the strength of the cover plate by opening holes in it.

[0014] In some embodiments, the first air inlet is located at the end of the first trough away from the first return air inlet; the second air inlet is located at the end of the second trough away from the second return air inlet.

[0015] In the above technical solution, the first air inlet and the first return air inlet are placed at opposite ends of the first tank. This allows the humid and hot air entering through the first air inlet to flow through the complete first air duct cavity and then enter the drying air duct through the first return air inlet. This increases the flow path of the humid and hot air within the first air duct cavity, allowing for more thorough contact between the humid and hot air and the coolant, thus improving the dehumidification efficiency and helping to increase the drying speed of clothes. Similarly, placing the second air inlet and the second return air inlet at opposite ends of the second tank allows the humid and hot air entering through the second air inlet to flow through the complete second air duct cavity and then enter the drying air duct through the second return air inlet. This increases the flow path of the humid and hot air within the second air duct cavity, allowing for more thorough contact between the humid and hot air and the coolant, thus improving the dehumidification efficiency and helping to increase the drying speed of clothes.

[0016] In some embodiments, a first outlet is formed at the lowest point of the first tank in the top-bottom direction of the housing; a second outlet is formed at the lowest point of the second tank in the top-bottom direction of the housing.

[0017] In the above technical solution, a first water outlet and a second water outlet are formed at the lowest point of the first tank and the lowest point of the second tank, respectively, so that the first water outlet and the second water outlet can discharge the condensed water and coolant condensed in the first air duct cavity and the second air duct cavity in a timely manner, so as to avoid the condensed water and coolant remaining in the inner cavity of the cooling air duct as much as possible, so as to prevent the condensed water and coolant from being in the inner cavity of the cooling air duct for a long time and being evaporated into water vapor, thereby affecting the humidity of the gas entering the drying air duct.

[0018] In some embodiments, the cover plate is a condenser plate, which is configured to condense water vapor in the gas flowing over its surface into condensate.

[0019] In the above technical solution, the cover plate is designed as a condenser plate, making it an integral part of the first and second air duct cavities. During the process of hot, humid air flowing back into the drying duct through the first and second air duct cavities, in addition to heat exchange between the coolant and the hot, humid air, the condenser plate can also contact and exchange heat with the hot, humid air. This causes the water vapor in the hot, humid air to be rapidly condensed into water and discharged, significantly reducing the moisture content of the hot, humid air and transforming it into dry, cool air with low moisture content. This further improves the dehumidification efficiency of the hot, humid air, thereby increasing the drying speed of clothes. Furthermore, the side of the condenser plate away from the groove is exposed inside the first cavity, allowing it to also contact and exchange heat with the hot, humid air within the first cavity, improving the dehumidification efficiency and contributing to faster clothes drying. Additionally, since the condenser plate can also dehumidify the hot, humid air, the amount of coolant used can be relatively reduced, thus lowering coolant consumption.

[0020] In some embodiments, a portion of the coolant provided by the cooling mechanism is sprayed onto the surface of the condenser plate.

[0021] In the above technical solution, by spraying coolant onto the surface of the condenser, the temperature of the condenser can be reduced to ensure the condensation performance of the condenser, thereby improving the heat exchange efficiency and dehumidification efficiency of the condenser for humid and hot air.

[0022] In some embodiments, the cooling duct includes: a duct plate laid on the rear end wall of the outer cylinder facing the inner cylinder; the duct plate having a recess, recessed in the direction close to the inner cylinder on the side of the duct plate facing the rear end wall of the outer cylinder; the space enclosed by the recess and the rear end wall of the outer cylinder forms the inner cavity of the cooling duct; a separator disposed in the recess to divide the recess into a first recess and a second recess, the space enclosed by the first recess, the separator, and the rear end wall of the outer cylinder forming a first duct cavity, and the space enclosed by the second recess, the separator, and the rear end wall of the outer cylinder forming a second duct cavity; a return air inlet formed on the rear end wall of the outer cylinder; the separator extending to the return air inlet to divide the return air inlet into a first return air inlet and a second return air inlet.

[0023] In the above technical solution, the cooling air duct is formed by the air duct plate with a concave part and the rear end wall of the outer cylinder. It only requires the addition of the air duct plate on the basis of the original product, which has the characteristics of small process modification and low modification cost. Moreover, in order to set up the cooling air duct, there is no need to open the groove on the rear end wall of the outer cylinder, so it will not affect the structural strength of the outer cylinder.

[0024] Secondly, a clothes drying device is also provided, including a housing, an outer drum, an inner drum, a drying air duct, and a cooling air duct; the outer drum is disposed inside the housing, and a return air vent is provided on the inner side of the outer drum; the inner drum is rotatably disposed inside the outer drum, and a drying chamber capable of accommodating clothes is formed inside the inner drum; the cavity between the inner drum and the outer drum is a first cavity, and the drying chamber is connected to the return air vent through the first cavity; the drying air duct is disposed outside the outer drum, one end of the drying air duct is connected to the return air vent, and the other end of the drying air duct is connected to the drying chamber; the drying air duct is configured... To supply gas for drying clothes into the drying chamber and to draw gas from the first chamber through the return air vent; a cooling air duct is formed on the rear end wall of the outer cylinder facing the inner cylinder, and a return air vent is formed in the inner cavity of the cooling air duct; a partition is provided inside the cooling air duct to divide the inner cavity of the cooling air duct into a first air duct cavity and a second air duct cavity, and to divide the return air vent into a first return air vent and a second return air vent, with the first air duct cavity connected to the first return air vent and the second air duct cavity connected to the second return air vent; the cooling air duct includes a first air inlet and a second air inlet. The system includes a first water outlet and a second water outlet; a first air inlet connects the first cavity and the first air duct cavity, allowing the first cavity to be connected to the first return air outlet via the first air duct cavity; a second air inlet connects the first cavity and the second air duct cavity, allowing the first cavity to be connected to the second return air outlet via the second air duct cavity; a first water outlet is connected to the first air duct cavity; a second water outlet is connected to the second air duct cavity; at least a portion of the cooling air duct structure consists of a condenser plate cooled by a cooling mechanism, with a portion of the condenser plate used to enclose the first air duct cavity and a portion of the condenser plate used to enclose the second air duct cavity. Air duct cavity; Under the suction action of the drying air duct, the gas in the drying chamber enters the first air duct cavity through the first cavity and the first air inlet, and enters the second air duct cavity through the first cavity and the second air inlet, and flows back to the drying air duct from the first return air inlet and the second return air inlet respectively; wherein, the gas entering the first air duct cavity and the second air duct cavity flows over the surface of the condenser plate, causing the water vapor in the gas to be condensed into condensate, and the condensate can be discharged from the first air duct cavity through the first water outlet and from the second air duct cavity through the second water outlet.

[0025] In the above technical solution, a cooling air duct is provided on the side of the rear end wall of the outer cylinder facing the inner cylinder, and at least part of the structure of the cooling air duct is a condenser plate. The cooling air duct is connected to the first cavity and the return air port. With the action of the fan in the drying air duct, the humid and hot air coming out of the inner cylinder can be forced to reach the inner cavity of the cooling air duct through the first cavity, the first air inlet and the second air inlet and flow through the condenser plate, so that the humid and hot air can have full contact with the condenser plate. The water vapor in the humid and hot air is quickly condensed into water and discharged, which can greatly reduce the moisture content in the humid and hot air, and turn the humid and hot air into dry and cold air with low moisture content, thereby improving the dehumidification efficiency of the humid and hot air. After the dry and cold air enters the drying air duct through the return air port, it can be heated into dry and hot air with low moisture content. The dry and hot air can continue to dry the clothes, which is conducive to the evaporation of moisture in the clothes, thereby improving the drying efficiency, shortening the drying time, and increasing the speed of drying clothes. Furthermore, the inner cavity of the cooling air duct is divided into two air duct chambers by a separator, namely the first air duct chamber and the second air duct chamber. These two air duct chambers can independently guide the gas in the drying chamber back into the drying air duct. It can be regarded as having two independent cooling air ducts inside the outer cylinder. Using two independent cooling air ducts to cool the flowing hot and humid air can greatly improve the condensation efficiency of water vapor in the hot and humid air in the drying equipment, and reduce the moisture content in the hot and humid air in a large amount and rapidly, which is beneficial to increasing the drying speed of clothes. Under the action of the separator, the airflow in the two air duct chambers is separated, which can prevent the gas in the two air duct chambers from entering each other's internal cavities, and can guide the gas in the two air duct chambers to enter the drying air duct through the first return air port and the second return air port respectively, thereby increasing the gas flow speed in the drying equipment, increasing the flow of hot and dry air, and thus increasing the drying speed of clothes. Furthermore, because the separator divides the return air inlet into two inlets, namely the first return air inlet and the second return air inlet, which are connected to the two air duct cavities respectively, the fan in the drying air duct simultaneously performs suction operations on both air duct cavities during operation. The suction force of the fan is distributed between the two air duct cavities, making the airflow in each air duct cavity relatively weaker. The flow speed of the humid and hot air in the two air duct cavities slows down, which helps the humid and hot air to fully contact and exchange heat with the condensation plates in the two air duct cavities, improves the condensation efficiency of water vapor in the humid and hot air, and thus increases the drying speed of clothes. At the same time, the weakened airflow in the two air duct cavities can also prevent condensate and cooling media (such as coolant) flowing on the surface of the condensation plates from being sucked into the drying air duct with the airflow under the action of the fan, which would corrode the drying air duct and affect the humidity of the gas in the drying air duct. In addition, the condensed water can be discharged in time through the first and second water outlets to prevent the condensed water from being in the inner cavity of the cooling air duct for a long time and evaporating into water vapor, thereby affecting the humidity of the gas entering the drying air duct. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a three-dimensional structural diagram of a clothes drying device provided according to some embodiments of the present disclosure;

[0028] Figure 2 This is a three-dimensional structural diagram of a clothes drying device provided according to some embodiments of the present disclosure after removing the housing;

[0029] Figure 3 This is a side view of a clothes drying device provided according to some embodiments of the present disclosure after removing the housing;

[0030] Figure 4 for Figure 3 Schematic diagram of cross section along the AA direction;

[0031] Figure 5 This is a schematic diagram of the internal structure of a drying air duct provided according to some embodiments of the present disclosure;

[0032] Figure 6 This is a three-dimensional structural diagram of a cylindrical assembly after removing the inner cylinder, according to some embodiments of the present disclosure;

[0033] Figure 7 This is a three-dimensional structural diagram of an outer cylinder at one angle according to some embodiments of the present disclosure;

[0034] Figure 8 This is a three-dimensional structural schematic diagram of an outer cylinder from another angle according to some embodiments of the present disclosure;

[0035] Figure 9 This is a three-dimensional structural diagram of an outer cylinder using a condenser plate as a cover, according to some embodiments of the present disclosure;

[0036] Figure 10 This is a three-dimensional structural diagram of an outer cylinder after the cover plate has been removed, according to some embodiments of this disclosure;

[0037] Figure 11 This is a three-dimensional structural diagram of an outer cylinder after removing the cover plate and partition, according to some embodiments of this disclosure;

[0038] Figure 12 This is a side sectional view of a duct plate installed on an outer cylinder according to some embodiments of the present disclosure;

[0039] Figure 13 This is a rear view structural schematic diagram of an air duct plate provided according to some embodiments of the present disclosure.

[0040] The attached figures are labeled as follows:

[0041] 1-Box body, 11-Dispensing port, 12-Door body;

[0042] 2-Outer cylinder, 21-Rear end wall, 211-Mounting hole, 22-Return air inlet, 221-First return air inlet, 222-Second return air inlet, 23-First cavity, 24-Cooling air duct, 241-Groove, 2411-Rear groove wall, 2412-Side groove wall, 2413-First groove, 2414-Second groove, 242-Cover plate, 2421-Condensation plate, 243-Divider, 244-First air inlet, 245-Second air inlet, 246-First water outlet, 247-Second water outlet, 248-Air duct plate, 2481-Recess, 24811-First recess, 24812-Second recess;

[0043] 3-Door seal ring;

[0044] 4-Inner cylinder, 41-Drying chamber, 42-Rotating shaft assembly, 43-Through hole;

[0045] 5-Drying air duct, 51-Heating device, 52-Fan, 53-Air guide pipe;

[0046] 6-Cooling mechanism, 61-First liquid inlet, 62-Second liquid inlet, 63-Drain outlet. Detailed Implementation

[0047] The present disclosure will be further described in detail below with reference to the accompanying drawings and embodiments. Through these descriptions, the features and advantages of the present disclosure will become clearer and more apparent.

[0048] Unless otherwise defined, all technical and scientific terms used in this disclosure have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs; the terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to limit this disclosure; the terms “comprising” and “having” and any variations thereof in the specification and the foregoing description of this disclosure are intended to cover non-exclusive inclusion.

[0049] The term "embodiment" as used in this disclosure means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this disclosure. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this disclosure can be combined with other embodiments.

[0050] The specific term "exemplary" used in this disclosure means "serving as an example, embodiment, or illustration." Any embodiment illustrated as "exemplary" is not necessarily to be construed as superior or better than other embodiments. Although various aspects of embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated otherwise.

[0051] In the description of this disclosure, the technical terms “first,” “second,” “third,” etc., are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary or secondary relationship of the indicated technical features.

[0052] In the description of this disclosure, the technical term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects are in an "or" relationship.

[0053] In the description of this disclosure, the technical terms "upper", "lower", "inner", "outer", "front", "back", "left", "right", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship under the working state of this disclosure. They are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0054] In the description of this disclosure, unless otherwise expressly specified and limited, the technical terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0055] In the description of this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0056] In the description of this disclosure, "multiple" means two or more (including two), unless otherwise expressly and specifically limited.

[0057] In the description of this disclosure, the same reference numerals denote the same components, and for brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, and other dimensions of various components in the embodiments of this disclosure shown in the drawings, as well as the overall thickness, length, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this disclosure.

[0058] As part of the inventive concept of this disclosure, before describing the embodiments of this disclosure, it is necessary to analyze the reasons for the low dehumidification efficiency of clothes drying equipment in related technologies, and obtain the technical solutions of the embodiments of this disclosure through reasonable analysis.

[0059] In related technologies, with social progress and technological development, clothes dryers have become common household appliances. As living standards improve rapidly, people are using clothes dryers more frequently and demanding higher performance. Currently, most clothes dryers on the market dehumidify by having a cooling medium contact the humid air inside the device, cooling the air and condensing the moisture. The dehumidified air is then heated and blown onto the clothes, penetrating the clothing and becoming humid again, which is then dehumidified by the cooling medium. This cycle repeats multiple times to achieve the purpose of drying clothes. However, during the dehumidification process, insufficient contact between the cooling medium and the humid air leads to low dehumidification efficiency, failing to meet the demand for rapid drying.

[0060] To address this, the present disclosure provides a clothes drying device. By setting a cooling air duct on the inner side of the rear end wall of the outer cylinder, and with the action of a fan, hot and humid air can be introduced into the cooling air duct and fully contact the surface of the coolant and / or the condenser plate. The water vapor in the hot and humid air is quickly condensed into water and discharged, which can significantly reduce the moisture content in the hot and humid air, thereby solving the technical problem of low dehumidification efficiency in the prior art.

[0061] The technical solutions of the embodiments of this disclosure are described in detail below with reference to the accompanying drawings. The technical features involved in the different embodiments of this disclosure described below can be combined with each other as long as they do not conflict with each other.

[0062] The drying equipment can be a drum dryer or a drum washer-dryer combo, etc. For the convenience of describing the following embodiments, the structure of the drying equipment will be specifically described below using a drum washer-dryer combo as an example.

[0063] Please refer to the above. Figures 1 to 11 , Figure 1A three-dimensional structural diagram of a clothes drying device is provided, showing a specific construction of the housing. Figures 2 to 4 A schematic diagram of a clothes drying device with the casing removed is provided at different angles; it shows a structural relationship between the outer drum, the inner drum, and the drying air duct. Figure 5 A schematic diagram of the internal structure of a drying air duct is provided; it shows a specific construction of the drying air duct. Figures 6 to 11 A three-dimensional structural diagram of the outer cylinder at different angles is provided; it shows the internal structure of the outer cylinder and the specific layout of the cooling air duct and cooling mechanism on the outer cylinder.

[0064] An embodiment of this disclosure provides a clothes drying device, such as... Figure 1 and Figure 2 As shown, the clothes drying equipment includes a housing 1 and an outer cylinder 2, an inner cylinder 4, and a drying air duct 5 disposed inside the housing 1. The inner cylinder 4 is disposed inside the outer cylinder 2 and can hold clothes; the drying air duct 5 is disposed outside the outer cylinder 2 and can supply dry hot air to the inner cylinder 4 to dry the clothes.

[0065] In this embodiment, as Figure 1 As shown, the housing 1 forms the outer shell of the drying equipment, which is usually a rectangular hollow structure. The appearance of the housing 1 can be designed as needed and is not limited here. The housing 1 is provided with a receiving cavity, which can provide installation space for components such as the outer cylinder 2, the inner cylinder 4 and the drying air duct 5.

[0066] Furthermore, the housing 1 is provided with a dispensing port 11, which can be approximately circular and located on the front end face of the housing 11. The dispensing port 11 is connected to the receiving cavity.

[0067] In addition, a door 12 is installed on the housing 1. The door 12 is movably connected to the housing 1 near the dispensing port 11 via a hinge shaft to open or close the dispensing port 11.

[0068] In this embodiment, as Figures 1 to 4 As shown, the outer cylinder 2 is disposed in the receiving cavity of the box body 1. The outer cylinder 2 is a shell structure with an open front end. The opening at the front end of the outer cylinder 2 is the first cylinder opening, which is connected to the inner cavity of the outer cylinder 2 and is disposed opposite to the delivery port 11.

[0069] Specifically, the outer cylinder 2 can be formed by an outer peripheral wall and a rear end wall 21. The front end of the outer peripheral wall is provided with a first cylinder opening, and the rear end of the outer peripheral wall is sealed with a rear end wall 21, so that the rear end wall 21 is arranged opposite to the first cylinder opening.

[0070] Furthermore, a return air inlet 22 is provided on the inner side of the outer cylinder 2; for example, the return air inlet 22 is provided on the rear end wall 21 of the outer cylinder 2. The return air inlet 22 can be connected to the drying air duct 5, and the gas in the inner cavity of the outer cylinder 2 can be drawn into the drying air duct 5 through the return air inlet 22.

[0071] In addition, a door seal ring 3 is provided between the first cylinder opening and the inlet 11. The door seal ring 3 is roughly in the shape of a ring and can seal the gap between the first cylinder opening and the inlet 11 to prevent water in the outer cylinder 2 from flowing into the receiving cavity of the tank 1.

[0072] In this embodiment, as Figures 1 to 4 As shown, the inner cylinder 4 is disposed in the inner cavity of the outer cylinder 2. The inner cylinder 4 is rotatably connected to the rear end wall 21 of the outer cylinder 2 through the rotating shaft assembly 42. The rotating shaft assembly 42 can pass through the rear end wall 21 from front to back. The inner cylinder 4 and the outer cylinder 2 can be arranged coaxially inside and outside.

[0073] Specifically, the inner cylinder 4 is a shell structure with an open front end. A drying chamber 41 is formed inside the inner cylinder 4. The drying chamber 41 can hold clothes. The opening at the front end of the inner cylinder 4 is a second cylinder opening, which is connected to the drying chamber 41 and is positioned opposite to the first cylinder opening. When the door 12 is opened, clothes can be put into the drying chamber 41 through the loading port 11, the first cylinder opening, and the second cylinder opening, or clothes can be taken out of the drying chamber 41.

[0074] Furthermore, the cavity between the inner cylinder 4 and the outer cylinder 2 is the first cavity 23. It should be understood that the first cavity 23 is part of the inner cavity of the outer cylinder 2. A through hole 43 is provided on the side wall of the inner cylinder 4. The through hole 43 allows the drying cavity 41 to be connected to the first cavity 23. Since the return air port 22 is exposed inside the first cavity 23, the drying cavity 41 can be connected to the return air port 22 through the first cavity 23.

[0075] In this embodiment, as Figure 2 and Figure 3 As shown, the drying air duct 5 is located outside the outer cylinder 2. One end of the drying air duct 5 is connected to the return air port 22, and the other end of the drying air duct 5 is connected to the drying chamber 41, so that the drying chamber 41, the first chamber 23, the return air port 22 and the drying air duct 5 can form an air drying circulation loop.

[0076] The drying duct 5 is configured to supply gas for drying clothes into the drying chamber 41 and to extract gas from the first chamber 23 through the return air vent 22.

[0077] Specifically, such as Figure 5As shown, a heating device 51 and a fan 52 are installed inside the drying duct 5. The heating device 51 heats the air inside the drying duct 5, generating high-temperature air. The fan 52 provides airflow, allowing the high-temperature air inside the drying duct 5 to enter the drying chamber 41 of the inner cylinder 4 and dry the clothes inside the drying chamber 41. Simultaneously, under the action of the fan 52, air in the first chamber 23 can also be drawn back into the drying duct 5 through the return air port 22.

[0078] Optionally, an air guide pipe 53 is provided through the door seal ring 3. The air guide pipe 53 is connected to one end of the drying air duct 5. The air guide pipe 53 is set towards the second cylinder opening of the inner cylinder 4 and can send the high temperature air in the drying air duct 5 into the drying chamber 41 through the second cylinder opening.

[0079] In this embodiment, as Figures 6 to 11 As shown, the clothes drying equipment also includes a cooling duct 24 and a cooling mechanism 6. The cooling mechanism 6 can provide coolant to the cooling duct 24 and contact and exchange heat with the hot and humid air in the cooling duct 24.

[0080] Regarding cooling air duct 24, as Figure 6 and Figure 11 As shown, a cooling air duct 24 is formed on the side of the rear end wall 21 of the outer cylinder 2 facing the inner cylinder 4. A return air port 22 is formed in the inner cavity of the cooling air duct 24, and the return air port 22 is connected to the first cavity 23 through the inner cavity of the cooling air duct 24.

[0081] With the above structural design, under the suction action of the fan 52 in the drying duct 5, the humid and hot air in the drying chamber 41 can be forced to be drawn into the inner cavity of the cooling duct 24 through the first cavity 23, and then enter the drying duct 5 through the return air port 22. Moreover, the inner cavity of the cooling duct 24 is supplied with coolant by the cooling mechanism 6, so that the humid and hot air can fully contact the coolant. The coolant cools the humid and hot air, causing the water vapor in the humid and hot air to be quickly condensed into water and discharged, which can greatly reduce the moisture content in the humid and hot air, turning the humid and hot air into dry and cold air with low moisture content, thus improving the dehumidification efficiency of the humid and hot air. After the dry and cold air enters the drying duct 5 through the return air port 22, it can be heated into dry and hot air with low moisture content. The dry and hot air can continue to dry the clothes, which is conducive to the evaporation of moisture in the clothes, thereby improving the drying efficiency, shortening the drying time, and increasing the speed of drying clothes.

[0082] Furthermore, such as Figure 8 and Figure 10As shown, the cooling air duct 24 is provided with a partition 243, which divides the inner cavity of the cooling air duct 24 into a first air duct cavity and a second air duct cavity, and divides the return air inlet 22 into a first return air inlet 221 and a second return air inlet 222. The first air duct cavity is connected to the first return air inlet 221, and the second air duct cavity is connected to the second return air inlet 222.

[0083] The partition 243 can be integrally formed with the rear end wall 21 of the outer cylinder 2, that is, the partition 243 is part of the rear end wall 21 of the outer cylinder 2; or, the partition 243 can be a baffle, which is installed inside the cooling air duct 24 and divides the inner cavity of the cooling air duct 24 into a first air duct cavity and a second air duct cavity that are independent of each other.

[0084] Moreover, such as Figure 7 and Figure 9 As shown, the cooling air duct 24 includes a first air inlet 244 and a second air inlet 245. The first air inlet 244 connects the first cavity 23 and the first air duct cavity, so that the first cavity 23 is connected to the first return air inlet 221 via the first air duct cavity; the second air inlet 245 connects the first cavity 23 and the second air duct cavity, so that the first cavity 23 is connected to the second return air inlet 222 via the second air duct cavity.

[0085] Based on the above structural design, the air circulation process in the drying equipment is as follows: Under the suction action of the fan 52 in the drying duct 5, part of the gas in the drying chamber 41 enters the first duct cavity through the first cavity 23 and the first air inlet 244, and flows back to the drying duct 5 from the first return air inlet 221; at the same time, part of the gas in the drying chamber 41 also enters the second duct cavity through the first cavity 23 and the second air inlet 245, and flows back to the drying duct 5 from the second return air inlet 222; the gas entering the drying duct 5 is heated and then transported to the drying chamber 41 to dry the clothes, thus realizing the air circulation in the drying equipment.

[0086] In the above structural design, the inner cavity of the cooling air duct 24 is divided into a first air duct cavity and a second air duct cavity, which has the following advantages:

[0087] Firstly, the inner cavity of the cooling air duct 24 is divided into two air duct chambers by the separator 243, namely the first air duct chamber and the second air duct chamber. These two air duct chambers can independently guide the gas in the drying chamber 41 back to the drying air duct 5. It can be regarded as that two independent cooling air ducts 24 are set inside the outer cylinder 2. Using two independent cooling air ducts 24 to cool the flowing hot and humid air can greatly improve the condensation efficiency of water vapor in the hot and humid air in the drying equipment, and reduce the moisture content in the hot and humid air in a large amount and quickly, which is conducive to improving the drying speed of clothes.

[0088] Secondly, under the action of the separator 243, the airflow in the two air ducts is separated, which can prevent the gas in the two air ducts from entering each other's internal cavities, and can guide the gas in the two air ducts to enter the drying air duct 5 through the first return air port 221 and the second return air port 222 respectively, thereby increasing the gas flow speed in the drying equipment, increasing the flow of hot dry air, and thus increasing the drying speed of clothes.

[0089] Thirdly, since the separator 243 divides the return air inlet 22 into two air inlets, namely the first return air inlet 221 and the second return air inlet 222, which are respectively connected to the two air duct cavities, the fan 52 in the drying air duct 5 simultaneously performs suction operation on the two air duct cavities when it is working. The suction force of the fan 52 is distributed to the two air duct cavities, so that the air force in each air duct cavity is relatively weakened. The flow speed of the humid and hot air in the two air duct cavities is slowed down, which helps the humid and hot air to fully contact and exchange heat with the coolant in the two air duct cavities, improves the condensation efficiency of water vapor in the humid and hot air, and thus improves the drying speed of clothes. At the same time, after the air force in the two air duct cavities is weakened, it can also prevent condensate and coolant from being sucked into the drying air duct 5 with the airflow under the action of the fan 52, which would corrode the drying air duct 5 and affect the humidity of the gas in the drying air duct 5.

[0090] Furthermore, such as Figure 7 and Figure 9 As shown, the cooling air duct 24 also includes a first water outlet 246 and a second water outlet 247. The first water outlet 246 is connected to the first air duct cavity; the second water outlet 247 is connected to the second air duct cavity.

[0091] With the above structural design, the condensed water and coolant can be discharged in time through the first water outlet 246 and the second water outlet 247, so as to prevent the condensed water and coolant from being evaporated into water vapor in the first air duct cavity and the second air duct cavity for a long time, thereby affecting the humidity of the gas entering the drying air duct 5.

[0092] It should be understood that if the first air inlet 244 is formed at the lowest point of the first air duct cavity in the top-to-bottom direction of the housing 1, the first air inlet 244 can be used as the first water outlet 246, without the need for a separate first water outlet 246. Similarly, if the second air inlet 245 is formed at the lowest point of the second air duct cavity in the top-to-bottom direction of the housing 1, the second air inlet 245 can be used as the second water outlet 247, without the need for a separate second water outlet 247. The above structural design simplifies the manufacturing process of the cooling air duct 24, reduces costs, and enhances the overall structural strength of the cooling air duct 24.

[0093] Regarding cooling mechanism 6, such as Figure 8 , Figure 10 and Figure 11 As shown, the cooling mechanism 6 includes a first liquid inlet 61, a second liquid inlet 62, and a drain outlet 63. The first liquid inlet 61 is configured to supply coolant to the first air duct cavity; the second liquid inlet 62 is configured to supply coolant to the second air duct cavity; and the drain outlet 63 is located at the bottom of the outer cylinder 2.

[0094] Alternatively, the coolant may be cold water or other pure liquid or mixture suitable for heat exchange with humid air, and there are no restrictions on this.

[0095] Optionally, the first liquid inlet 61 and the second liquid inlet 62 are provided on the outer cylinder 2 and are both connected to a liquid supply device for providing coolant; wherein, the first liquid inlet 61 can connect the liquid supply device and the first air duct cavity, and the second liquid inlet 62 can connect the liquid supply device and the second air duct cavity.

[0096] For example, the liquid supply device can be a faucet, with the first liquid inlet 61 connected to the faucet via a pipe to deliver cold water supplied by the faucet to the first air duct cavity; and the second liquid inlet 62 connected to the faucet via a pipe to deliver cold water supplied by the faucet to the second air duct cavity.

[0097] With the above structural design, the cooling mechanism 6 uses liquid cooling to directly exchange heat with the hot and humid air in the inner cavity of the cooling air duct 24, which can improve the heat exchange efficiency of the hot and humid air and help to increase the drying speed of clothes. Moreover, the cooling mechanism 6 is provided with two liquid inlets, namely the first liquid inlet 61 and the second liquid inlet 62, which can cool down the hot and humid air in the first air duct cavity and the second air duct cavity in a timely manner. In addition, the drain outlet 63 can collect the condensate and coolant flowing out through the first water outlet 246 and the second water outlet 247 and discharge them from the outer cylinder 2 to the outside of the drying equipment.

[0098] Please refer to the above. Figure 3 , Figure 4 , Figures 7 to 13 , Figure 3 and Figure 4 A schematic diagram of a clothes dryer at different angles after removing the casing is provided; it shows a specific layout of the rotating shaft assembly between the outer and inner drums. Figures 7 to 11 A three-dimensional structural diagram of the outer cylinder at different angles is provided; it shows the specific structure of a cooling air duct mainly composed of grooves and cover plates. Figure 12 and Figure 13 A schematic diagram of the assembly between the air duct plate and the outer cylinder is provided; it shows the specific structure of another cooling air duct mainly composed of the air duct plate and the outer cylinder.

[0099] In some embodiments, such as Figures 7 to 11As shown, the cooling air duct 24 also includes a groove 241 and a cover plate 242.

[0100] The groove 241 is recessed into the side of the rear end wall 21 of the outer cylinder 2 facing the inner cylinder 4 in a direction away from the inner cylinder 4; the cover plate 242 is laid at the opening of the groove 241, and the space between the cover plate 242 and the groove 241 forms the inner cavity of the cooling air duct 24.

[0101] Specifically, such as Figure 11 As shown, the groove 241 includes a rear groove wall 2411, a side groove wall 2412, and a groove opening. In the front-rear direction of the housing 1, the rear groove wall 2411 is disposed opposite to the cover plate 242, and the groove opening is disposed opposite to the rear groove wall 2411. The side groove wall 2412 is formed between the rear groove wall 2411 and the groove opening.

[0102] like Figure 8 and Figure 10 As shown, a partition 243 is provided in the groove 241. The edge of the partition 243 extends to the rear groove wall 2411 and the side groove wall 2412 to divide the groove 241 into two independent groove structures, namely the first groove 2413 and the second groove 2414. The edge of the partition 243 also extends towards the groove opening to the cover plate 242 to divide the inner cavity of the cooling air duct 24 into the first air duct cavity and the second air duct cavity. The first air duct cavity is the space formed by the first groove 2413, the partition 243 and the cover plate 242, and the second air duct cavity is the space formed by the second groove 2414, the partition 243 and the cover plate 242.

[0103] like Figure 10 and Figure 11 As shown, a return air inlet 22 is also provided in the groove 241; exemplarily, the return air inlet 22 is formed on the side groove wall 2412 and is located near the outer peripheral wall of the outer cylinder 2. The edge of the separator 243 can also extend to the return air inlet 22 to divide the return air inlet 22 into a first return air inlet 221 and a second return air inlet 222.

[0104] Optionally, the cover plate 242 can be an integrally formed long arc-shaped plate, which is laid on the first groove 2413 and the second groove 2414 to form the first air duct cavity and the second air duct cavity; or, the cover plate 242 can be two short arc-shaped plates, which are laid on the first groove 2413 and the second groove 2414 respectively to form the first air duct cavity and the second air duct cavity.

[0105] Optionally, after the cover plate 242 is laid on the groove 241, the connection between the cover plate 242 and the rear end wall 21 of the outer cylinder 2 can be locked by fasteners such as screws or fixed by welding. For example, the edge of the cover plate 242 is formed with a first screw hole, and the outer edge of the groove 241 is formed with a second screw hole. The screw passes through the corresponding first screw hole and second screw hole to lock the cover plate 242 to the inner side of the rear end wall 21 of the outer cylinder 2, so that the cover plate 242 and the groove 241 form a cooling air duct 24.

[0106] With the above structural design, the cooling air duct 24 is formed by the groove 241 and the cover plate 242. The groove 241 is recessed in the rear end wall 21 of the outer cylinder 2 in the direction away from the inner cylinder 4, and the cover plate 242 is laid at the groove opening of the groove 241. This design will not occupy too much space between the rear end wall 21 of the outer cylinder 2 and the rear end of the inner cylinder 4, which can save installation space and facilitate the reasonable assembly between the outer cylinder 2 and the inner cylinder 4. It can make the structural layout of the entire drying equipment in the front and rear directions of the box 1 more compact and reasonable.

[0107] Of course, the cooling air duct 24 is not limited to the above-mentioned structural method. Another specific structure of the cooling air duct 24 can be: such as Figure 12 and Figure 13 As shown, the cooling air duct 24 includes an air duct plate 248, which has a recess 2481. Along the direction close to the inner cylinder 4, the recess 2481 is recessed in the side of the air duct plate 248 facing the rear end wall 21 of the outer cylinder 2; and the air duct plate 248 is laid on the side of the rear end wall 21 of the outer cylinder 2 facing the inner cylinder 4.

[0108] The space enclosed by the recess 2481 and the rear end wall 21 of the outer cylinder 2 forms the inner cavity of the cooling air duct 24; the partition 243 is disposed in the recess 2481 to divide the recess 2481 into a first recess 24811 and a second recess 24812. The space enclosed by the first recess 24811, the partition 243 and the rear end wall 21 of the outer cylinder 2 forms the first air duct cavity, and the space enclosed by the second recess 24812, the partition 243 and the rear end wall 21 of the outer cylinder 2 forms the second air duct cavity.

[0109] Accordingly, a return air vent is formed on the rear end wall 21 of the outer cylinder 2, and a separator 243 extends to the return air vent to divide the return air vent 22 into a first return air vent and a second return air vent.

[0110] Accordingly, the first air inlet and the first water outlet are opened on the air duct plate 248 and are respectively connected to the first air duct cavity, and the second air inlet and the second water outlet are opened on the air duct plate 248 and are respectively connected to the second air duct cavity.

[0111] With the above structural design, the cooling air duct 24 is formed by the air duct plate 248 with the recess 2481 and the rear end wall 21 of the outer cylinder 2. Only the air duct plate 248 needs to be added to the original product, which has the characteristics of small process modification and low modification cost. Moreover, in order to set up the cooling air duct 24, there is no need to open the groove 241 on the rear end wall 21 of the outer cylinder 2, so it will not affect the structural strength of the outer cylinder 2.

[0112] To facilitate the description of the following embodiments, the structure of the clothes drying equipment will be specifically described below using the cooling air duct 24 formed by the groove 241 and the cover plate 242 as an example.

[0113] Optionally, such as Figure 3 and Figure 4 As shown, a rotating shaft assembly 42 is provided on the side of the inner cylinder 4 facing the rear end wall 21 of the outer cylinder 2. The rotating shaft assembly 42 is configured to allow the inner cylinder 4 to rotate inside the outer cylinder 2; correspondingly, as Figure 7 As shown, an installation hole 211 is provided on the rear end wall 21 of the outer cylinder 2 for the rotating shaft assembly 42 to pass through; after the rotating shaft assembly 42 passes through the installation hole 211, it can be connected to the motor drive, so that the inner cylinder 4 can rotate inside the outer cylinder 2 under the drive of the motor.

[0114] For the rear end wall 21 of the outer cylinder 2 with the mounting hole 211, the specific layout of the groove 241 in the cooling air duct 24 on the rear end wall 21 of the outer cylinder 2 can be: the groove 241 extends around the circumference of the mounting hole 211 and surrounds the outer periphery of the mounting hole 211, and at least part of the groove 241 surrounds the top of the mounting hole 211.

[0115] With the above structural design, the groove 241 is formed on the inner side of the rear end wall 21 of the outer cylinder 2 and surrounds the outer periphery of the mounting hole 211, so that the groove 241 can have a larger layout area under reasonable conditions, thereby making the layout space of the cooling air duct 24 larger, so as to draw in more humid and hot air to fully contact and exchange heat with the coolant, improve the condensation efficiency of water vapor in the humid and hot air, and reduce the moisture content in the humid and hot air in large quantities and rapidly, which is beneficial to improving the drying speed of clothes.

[0116] Optionally, such as Figure 7 and Figure 9 As shown, the cover plate 242 blocks part of the groove 241, so that the part of the groove 241 that is not blocked by the cover plate 242 forms a first air inlet 244 and a second air inlet 245.

[0117] With the above structural design, the part of the groove 241 that is not covered by the cover plate 242 is used as the first air inlet 244 and the second air inlet 245. That is, the first air inlet 244 and the second air inlet 245 are both part of the structure of the groove 241. There is no need to process it separately on the cover plate 242, which can simplify the process and avoid affecting the strength of the cover plate 242 due to opening holes in the cover plate 242.

[0118] Optionally, such as Figure 7 , Figure 9 and Figure 10 As shown, the first air inlet 244 is located at the end of the first trough 2413 away from the first return air inlet 221; the second air inlet 245 is located at the end of the second trough 2414 away from the second return air inlet 222.

[0119] By adopting the above structural design, the first air inlet 244 and the first return air inlet 221 are placed at both ends of the first tank 2413, so that the hot and humid air entering from the first air inlet 244 can flow through the complete first air duct cavity and then enter the drying air duct 5 from the first return air inlet 221. This increases the flow path of the hot and humid air in the first air duct cavity, allowing the hot and humid air to have more sufficient contact with the coolant, which can improve the dehumidification efficiency of the hot and humid air and help to increase the speed of drying clothes.

[0120] Similarly, the second air inlet 245 and the second return air inlet 222 are placed at opposite ends of the second tank 2414, so that the hot and humid air entering from the second air inlet 245 can flow through the complete second air duct cavity and then enter the drying air duct 5 from the second return air inlet 222. This increases the flow path of the hot and humid air in the second air duct cavity, allowing the hot and humid air to have more sufficient contact with the coolant, which can improve the dehumidification efficiency of the hot and humid air and help to increase the speed of drying clothes.

[0121] Furthermore, such as Figure 7 and Figure 9 As shown, the first outlet 246 is formed at the lowest point of the first tank 2413 in the top-bottom direction of the box 1; the second outlet 247 is formed at the lowest point of the second tank 2414 in the top-bottom direction of the box 1.

[0122] With the above structural design, a first water outlet 246 and a second water outlet 247 are formed at the lowest point of the first tank 2413 and the lowest point of the second tank 2414, respectively. This allows the first water outlet 246 and the second water outlet 247 to discharge the condensed water and coolant condensed in the first air duct cavity and the second air duct cavity in a timely manner, so as to avoid the condensed water and coolant remaining in the inner cavity of the cooling air duct 24 as much as possible. This prevents the condensed water and coolant from being in the inner cavity of the cooling air duct 24 for a long time and being evaporated into water vapor, thereby affecting the humidity of the gas entering the drying air duct 5.

[0123] Optionally, the first outlet 246 and the second outlet 247 are both groove structures formed on the rear end wall 21 of the outer cylinder 2, and the groove structure is recessed in the direction away from the inner cylinder 4 on the side of the rear end wall 21 of the outer cylinder 2 facing the inner cylinder 4.

[0124] The first outlet 246 and the second outlet 247 are both designed with a groove structure, and the groove structure is formed on the rear end wall 21 of the outer cylinder 2. This allows the condensate and coolant accumulated at the first outlet 246 and the second outlet 247 to flow downward along the rear end wall 21 of the outer cylinder 2. This can minimize the splashing of condensate and coolant from the first outlet 246 and the second outlet 247 into the inner cylinder 4, which would wet the clothes and affect the drying speed and effect.

[0125] It should be understood that, based on the specific shape of the first groove 2413 and the second groove 2414 in the groove 241, other water outlets can be opened at locations where condensate is likely to accumulate in the first groove 2413 and the second groove 2414, so as to avoid condensate and coolant remaining in the first air duct cavity and the second air duct cavity as much as possible.

[0126] Please refer to the above. Figure 9 and Figure 10 , Figure 9 A three-dimensional structural diagram is provided, showing an outer cylinder with a condenser plate as a cover; the diagram illustrates a specific layout in which the condenser plate is installed inside the outer cylinder. Figure 10 A three-dimensional structural diagram of the outer cylinder after the cover plate is removed is provided; it shows a specific layout of the groove on the inner side of the outer cylinder.

[0127] In some embodiments, such as Figure 9 and Figure 10 As shown, the cooling duct 24 is mainly composed of a groove 241 and a cover plate 242. The cover plate 242 is a condenser plate 2421. The condenser plate 2421 is configured to condense water vapor in the gas flowing through the surface of the condenser plate 2421 into condensate, and collect the condensate to the first outlet 246 and the second outlet 247 for discharge from the first duct cavity and the second duct cavity.

[0128] The condenser plate 2421 is used as a condenser to condense the air flowing through the first air duct cavity and the second air duct cavity to dehumidify the air. That is, the air in the first air duct cavity and the second air duct cavity can exchange heat with the condenser plate 2421 to remove the moisture in the air and lower the temperature of the air. Then the air can enter the drying air duct 5 from the first return air port 221 and the second return air port 222.

[0129] Optionally, the condenser plate 2421 and the groove 241 can have the same structure and curvature, so that the condenser plate 2421 can have a larger heat exchange area.

[0130] For example, one structure of the condenser plate 2421 may be: the condenser plate 2421 is generally in the shape of a circular annular plate with a notch; wherein the condenser plate 2421 is laid on the groove 241, and part of the condenser plate 2421 is used to enclose the first air duct cavity, and part of the condenser plate 2421 is used to enclose the second air duct cavity.

[0131] For example, another structure of the condenser plate 2421 can be: the condenser plate 2421 is generally in the shape of an arc plate, and there are two condenser plates 2421, which are used to enclose the first air duct cavity and the second air duct cavity respectively.

[0132] It should be noted that the slot at the end of the first air duct cavity away from the partition 243 is not fitted with a condenser plate 2421 to form the first air inlet 244; the slot at the end of the second air duct cavity away from the partition 243 is also not fitted with a condenser plate 2421 to form the second air inlet 245. Since the first air inlet 244 is formed at the lowest point of the first air duct cavity in the top-to-bottom direction of the housing 1, it can be used as the first water outlet 246. Similarly, the second air inlet 245 is formed at the lowest point of the second air duct cavity in the top-to-bottom direction of the housing 1, and therefore can be used as the second water outlet 247.

[0133] Alternatively, the condenser plate 2421 may be made of metal.

[0134] Specifically, the condenser tray 2421 can be made of stainless steel or aluminum alloy. Utilizing the properties of the metal material, the thermal conductivity of the condenser tray is much higher than that of plastic, resulting in high heat exchange efficiency. This allows humid air to be cooled by passing through the metal condenser tray, achieving a better dehumidification effect. This improves the heat exchange efficiency with the air, thereby enhancing the condensation efficiency of the dryer and shortening the drying time.

[0135] Of course, the condenser plate 2421 can also be made of other materials with high thermal conductivity, and there are no restrictions here.

[0136] Optionally, the condenser plate 2421 can be a single-layer sheet structure or a multi-layer composite plate structure.

[0137] With the above structural design, the cover plate 242 is designed as a condenser plate 2421, making the condenser plate 2421 part of the enclosure of the first air duct cavity and the second air duct cavity. During the process of hot and humid air flowing back to the drying air duct 5 through the first air duct cavity and the second air duct cavity, in addition to the heat exchange between the coolant and the hot and humid air, the condenser plate 2421 can also come into contact with the hot and humid air and exchange heat, so that the water vapor in the hot and humid air is quickly condensed into water and discharged, which can greatly reduce the moisture content in the hot and humid air, and turn the hot and humid air into dry and cold air with low moisture content, so as to further improve the dehumidification efficiency of the hot and humid air, thereby increasing the drying speed of clothes.

[0138] Furthermore, the side of the condenser plate 2421 away from the groove 241 is exposed inside the first cavity 23, allowing the condenser plate 2421 to also come into contact with and exchange heat with the humid and hot air inside the first cavity 23, which can improve the dehumidification efficiency of the humid and hot air and help to increase the speed of drying clothes.

[0139] In addition, since the condenser plate 2421 can also dehumidify the hot and humid air, the amount of coolant used can be reduced, thereby reducing the amount of coolant consumed.

[0140] Furthermore, a portion of the coolant provided by the cooling mechanism 6 is sprayed onto the surface of the condenser plate 2421.

[0141] By adopting the above structural design, the temperature of the condenser 2421 can be reduced by spraying coolant onto the surface of the condenser 2421, so as to ensure the condensation performance of the condenser 2421 and thereby improve the heat exchange efficiency and dehumidification efficiency of the condenser 2421 for humid and hot air.

[0142] Specifically, the surface of the condenser plate 2421 facing the rear tank wall 2411 is defined as the first surface, and the surface of the condenser plate 2421 facing the inner cylinder 4 is defined as the second surface. Based on this, the coolant can be sprayed onto the surface of the condenser plate 2421 in the following ways:

[0143] 1. The coolant is sprayed only onto the first surface of the condenser plate 2421. Considering that the coolant needs to come into contact with the hot and humid air in the cooling duct 24 and exchange heat, and since the first surface is exposed in the inner cavity of the cooling duct 24, the spray direction of the coolant can be more concentrated, which facilitates the position layout of the first inlet 61 and the second inlet 62 of the coolant on the outer cylinder 2.

[0144] Second, the coolant is sprayed only onto the second surface of the condenser plate 2421. Since the second surface is located outside the inner cavity of the cooling air duct 24, a portion of the coolant is heat exchanged outside the cooling air duct 24, reducing the amount of coolant in the inner cavity of the cooling air duct 24 and decreasing the probability of coolant entering the drying air duct 5 with the airflow.

[0145] Third, the coolant is sprayed onto the first and second surfaces of the condenser plate 2421 simultaneously. This method can increase the heat exchange area between the coolant and the condenser plate 2421, so that the coolant can cool the condenser plate 2421 in a timely manner to ensure the condensation performance of the condenser plate 2421.

[0146] It should be understood that the cover plate 242 is mainly used to form the cooling air duct 24, therefore the cover plate 242 is not limited to the structural design of the condenser plate 2421. The cover plate 242 may also not have the function of exchanging heat with humid and hot air, and it may be made of a material with a low thermal conductivity (e.g., plastic).

[0147] Please refer to the above. Figures 1 to 5 as well as Figures 9 to 13 , Figure 1 A three-dimensional structural diagram of a clothes drying device is provided, showing a specific construction of the housing. Figures 2 to 4 A schematic diagram of a clothes drying device with the casing removed is provided at different angles; it shows a structural relationship between the outer drum, the inner drum, and the drying air duct. Figure 5 A schematic diagram of the internal structure of a drying air duct is provided; it shows a specific construction of the drying air duct. Figures 9 to 11 A three-dimensional structural diagram of the outer cylinder at different angles is provided; it shows the specific structure of a cooling air duct mainly composed of grooves and condensation plates. Figure 12 and Figure 13 A schematic diagram of the assembly between the air duct plate and the outer cylinder is provided; it shows the specific structure of another cooling air duct mainly composed of the air duct plate and the outer cylinder.

[0148] This disclosure also provides a clothes drying device, such as... Figures 1 to 5 As shown, the clothes drying equipment includes a housing 1 and an outer cylinder 2, an inner cylinder 4, and a drying duct 5 disposed inside the housing 1. The outer cylinder 2 is disposed inside the housing 1, and a return air vent 22 is provided on its inner side. The inner cylinder 4 is rotatably disposed inside the outer cylinder 2, and a drying chamber 41 capable of accommodating clothes is formed inside the inner cylinder 4. The cavity between the inner cylinder 4 and the outer cylinder 2 is a first cavity 23, and the drying chamber 41 is connected to the return air vent 22 via the first cavity 23. The drying duct 5 is disposed outside the outer cylinder 2, with one end connected to the return air vent 22 and the other end connected to the drying chamber 41. The drying duct 5 is configured to supply gas for drying clothes into the drying chamber 41 and to draw gas from the first cavity 23 through the return air vent 22.

[0149] like Figures 9 to 11As shown, the drying equipment also includes a cooling duct 24, which is formed on the side of the rear end wall 21 of the outer cylinder 2 facing the inner cylinder 4. A return air inlet 22 is formed in the inner cavity of the cooling duct 24. A partition 243 is provided inside the cooling duct 24, dividing the inner cavity into a first duct cavity and a second duct cavity, and dividing the return air inlet 22 into a first return air inlet 221 and a second return air inlet 222. The first duct cavity is connected to the first return air inlet 221, and the second duct cavity is connected to the second return air inlet 222. 24 includes a first air inlet 244, a second air inlet 245, a first water outlet 246, and a second water outlet 247; wherein, the first air inlet 244 connects the first cavity 23 and the first air duct cavity, so that the first cavity 23 is connected to the first return air outlet 221 via the first air duct cavity; the second air inlet 245 connects the first cavity 23 and the second air duct cavity, so that the first cavity 23 is connected to the second return air outlet 222 via the second air duct cavity; the first water outlet 246 is connected to the first air duct cavity; and the second water outlet 247 is connected to the second air duct cavity.

[0150] It should be understood that if the first air inlet 244 is formed at the lowest point of the first air duct cavity in the top-to-bottom direction of the housing 1, the first air inlet 244 can be used as the first water outlet 246, without the need for a separate first water outlet 246. Similarly, if the second air inlet 245 is formed at the lowest point of the second air duct cavity in the top-to-bottom direction of the housing 1, the second air inlet 245 can be used as the second water outlet 247, without the need for a separate second water outlet 247.

[0151] The main difference between this embodiment and the embodiment described above is that at least part of the structure of the cooling duct 24 is a condenser plate 2421 and a cooling mechanism 6 for cooling the condenser plate 2421. Therefore, only these distinguishing features will be described in detail here.

[0152] Regarding cooling air duct 24, as Figure 9 As shown, at least a portion of the structure of the cooling duct 24 is a condenser plate 2421, and a portion of the condenser plate 2421 is used to enclose the first duct cavity, and a portion of the condenser plate 2421 is used to enclose the second duct cavity.

[0153] Under the suction of the drying duct 5, the gas in the drying chamber 41 enters the first duct cavity through the first cavity 23 and the first air inlet 244, and enters the second duct cavity through the first cavity 23 and the second air inlet 245, and flows back to the drying duct 5 from the first return air inlet 221 and the second return air inlet 222 respectively; wherein, the gas entering the first duct cavity and the second duct cavity flows over the surface of the condenser plate 2421, causing the water vapor in the gas to be condensed into condensate, and the condensate can be discharged from the first duct cavity through the first water outlet 246 and from the second duct cavity through the second water outlet 247.

[0154] With the above structural design, a cooling air duct 24 is provided on the side of the rear end wall 21 of the outer cylinder 2 facing the inner cylinder 4, and at least part of the structure of the cooling air duct 24 is a condenser plate 2421. The cooling air duct 24 is connected to the first cavity 23 and the return air port 22, and in conjunction with the action of the fan 52 in the drying air duct 5, it can force the humid and hot air coming out of the inner cylinder 4 to reach the inner cavity of the cooling air duct 24 through the first cavity 23, the first air inlet 244 and the second air inlet 245 and flow through the condenser plate 2421, so that the humid and hot air is mixed with the condenser plate 2421. The condenser plate 2421 makes full contact with the humid air, and the water vapor in the humid air is quickly condensed into water and discharged, which can greatly reduce the moisture content in the humid air and turn it into dry and cold air with low moisture content, thus improving the dehumidification efficiency of the humid air. After the dry and cold air enters the drying air duct 5 through the return air inlet 22, it can be heated into dry and hot air with low moisture content. The dry and hot air can continue to dry the clothes, which is conducive to the evaporation of moisture in the clothes, thereby improving the drying efficiency, shortening the drying time, and increasing the speed of drying clothes.

[0155] Optionally, such as Figure 9 As shown, the cooling duct 24 mainly includes a groove 241 and a cover plate 242. The groove 241 is recessed into the rear end wall 21 of the outer cylinder 2 facing the inner cylinder 4 in a direction away from the inner cylinder 4. The cover plate 242 is laid at the opening of the groove 241. The space between the groove 241 and the cover plate 242 forms the inner cavity of the cooling duct 24, which is divided into a first duct cavity and a second duct cavity by a separator 243. Based on the above scheme, the cover plate 242 is designed as a condensation plate 2421.

[0156] Optionally, such as Figure 12 and Figure 13 As shown, the cooling air duct 24 mainly includes an air duct plate 248, which has a recess 2481. Along the direction close to the inner cylinder 4, the recess 2481 is recessed in the side of the air duct plate 248 facing the rear end wall 21 of the outer cylinder 2. The air duct plate 248 is laid on the side of the rear end wall 21 of the outer cylinder 2 facing the inner cylinder 4. The space enclosed by the recess 2481 and the rear end wall 21 of the outer cylinder 2 forms the inner cavity of the cooling air duct 24. A separator 243 is disposed in the recess 2481 to divide the recess 2481 into a first recess 24811 and a second recess 24812. The space enclosed by the first recess 24811, the separator 243, and the rear end wall 21 of the outer cylinder 2 forms the first air duct cavity, and the space enclosed by the second recess 24812, the separator 243, and the rear end wall 21 of the outer cylinder 2 forms the second air duct cavity. Based on the above scheme, the air duct plate 248 is designed as a condenser plate 2421.

[0157] Regarding the cooling mechanism 6, the cooling mechanism 6 is mainly used to cool and reduce the temperature of the condenser plate 2421. It can be a liquid-cooled cooling mechanism or an air-cooled cooling mechanism.

[0158] When the cooling mechanism 6 uses liquid cooling to cool the condenser plate 2421, the cooling mechanism 6 provides coolant and guides the coolant to be sprayed onto the surface of the condenser plate 2421 to cool it down. At the same time, the coolant can also come into contact with and exchange heat with the humid air to improve the heat exchange efficiency and dehumidification efficiency of the humid air.

[0159] When the cooling mechanism 6 uses air cooling to cool the condenser plate 2421, it provides cooling air and directs it towards the surface of the condenser plate 2421 to cool it. It should be noted that when the cooling mechanism 6 uses air cooling, the mixing of the cooling air provided by the cooling mechanism 6 with the humid, hot air flowing through the condenser plate 2421 should be avoided as much as possible to prevent interference between the normal flow paths of the cooling air and the humid, hot air. Therefore, through structural design, the flow channels of the cooling air and the humid, hot air can be separated by a partition structure.

[0160] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure, and not to limit them. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this disclosure, and they should all be covered within the scope of the claims and specification of this disclosure. This disclosure is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A clothes drying device, characterized in that, include: Box; An outer cylinder is located inside the housing, and a return air vent is provided on the inner side of the outer cylinder; The inner drum is rotatably disposed inside the outer drum, and the inner drum has a drying chamber that can accommodate clothes. The cavity between the inner drum and the outer drum is a first cavity, and the drying chamber is connected to the return air vent through the first cavity. A drying air duct is provided outside the outer cylinder. One end of the drying air duct is connected to the return air inlet, and the other end of the drying air duct is connected to the drying chamber. The drying duct is configured to supply gas for drying clothes into the drying chamber and to draw gas from the first chamber through the return air vent. A cooling air duct is formed on the rear end wall of the outer cylinder facing the inner cylinder, and the return air inlet is formed in the inner cavity of the cooling air duct; The cooling duct is provided with a partition, which divides the inner cavity of the cooling duct into a first duct cavity and a second duct cavity, and divides the return air inlet into a first return air inlet and a second return air inlet. The first duct cavity is connected to the first return air inlet, and the second duct cavity is connected to the second return air inlet. The cooling air duct includes: The first air inlet connects the first cavity to the first air duct cavity, so that the first cavity is connected to the first return air inlet via the first air duct cavity. The second air inlet connects the first cavity and the second air duct cavity, so that the first cavity is connected to the second return air inlet via the second air duct cavity; The first water outlet is connected to the first air duct cavity; The second water outlet is connected to the second air duct cavity; Cooling mechanism, including: The first liquid inlet is configured to supply coolant into the first air duct cavity; The second inlet is configured to supply coolant into the second air duct cavity; A drain outlet is located at the bottom of the outer cylinder; Under the suction effect of the drying air duct, the gas in the drying chamber enters the first air duct cavity through the first cavity and the first air inlet, and enters the second air duct cavity through the first cavity and the second air inlet, and flows back to the drying air duct from the first return air inlet and the second return air inlet respectively. In this process, the gas entering the first air duct cavity and the second air duct cavity comes into contact with the coolant, causing the water vapor in the gas to condense into condensate. The condensate and coolant are collected at the drain port through the first water outlet and the second water outlet and discharged from the outer cylinder.

2. The clothes drying equipment according to claim 1, characterized in that, The cooling air duct includes: A groove, recessed into the rear end wall of the outer cylinder on the side facing the inner cylinder in a direction away from the inner cylinder; A cover plate is laid at the opening of the groove, and the space between the cover plate and the groove forms the inner cavity of the cooling air duct; The separator is disposed in the groove to divide the groove into a first groove and a second groove. The space formed by the first groove, the separator, and the cover plate forms the first air duct cavity, and the space formed by the second groove, the separator, and the cover plate forms the second air duct cavity. The return air vent is formed within the groove; The separator extends to the return air vent to divide the return air vent into a first return air vent and a second return air vent.

3. The clothes drying equipment according to claim 2, characterized in that, A rotating shaft assembly is provided on the side of the inner cylinder facing the rear end wall of the outer cylinder, and the rotating shaft assembly is configured to allow the inner cylinder to rotate inside the outer cylinder. The outer cylinder has a mounting hole on its rear end wall for the rotating shaft assembly to pass through. The groove extends circumferentially around the mounting hole and surrounds the outer periphery of the mounting hole, with at least a portion of the groove surrounding the top of the mounting hole.

4. The clothes drying equipment according to claim 2, characterized in that, The cover plate partially blocks the opening of the groove, so that the portion of the groove opening not blocked by the cover plate forms the first air inlet and the second air inlet.

5. The clothes drying equipment according to claim 2, characterized in that, The first air inlet is located at the end of the first trough that is furthest from the first air return outlet; The second air inlet is located at the end of the second trough that is away from the second return air inlet.

6. The clothes drying equipment according to claim 2, characterized in that, The first outlet is formed at the lowest point of the first tank in the top-bottom direction of the tank body; The second outlet is formed at the lowest point of the second tank in the top-bottom direction of the tank.

7. The clothes drying apparatus according to any one of claims 2-6, characterized in that, The cover plate is a condenser plate, which is configured to condense water vapor in the gas flowing over its surface into condensate.

8. The clothes drying equipment according to claim 7, characterized in that, A portion of the coolant provided by the cooling mechanism is sprayed onto the surface of the condenser plate.

9. The clothes drying equipment according to claim 1, characterized in that, The cooling air duct includes: The air duct plate is laid on the rear end wall of the outer cylinder facing the inner cylinder; The air duct plate has a recess, which is recessed into the rear end wall of the air duct plate facing the outer cylinder along the direction close to the inner cylinder. The space enclosed by the recess and the rear end wall of the outer cylinder forms the inner cavity of the cooling air duct; The separator is disposed in the recess to divide the recess into a first recess and a second recess. The space formed by the first recess, the separator, and the rear end wall of the outer cylinder forms the first air duct cavity, and the space formed by the second recess, the separator, and the rear end wall of the outer cylinder forms the second air duct cavity. The return air inlet is formed on the rear end wall of the outer cylinder; The separator extends to the return air vent to divide the return air vent into a first return air vent and a second return air vent.

10. A clothes drying device, characterized in that, include: Box; An outer cylinder is located inside the housing, and a return air vent is provided on the inner side of the outer cylinder; The inner drum is rotatably disposed inside the outer drum, and the inner drum has a drying chamber that can accommodate clothes. The cavity between the inner drum and the outer drum is a first cavity, and the drying chamber is connected to the return air vent through the first cavity. A drying air duct is provided outside the outer cylinder. One end of the drying air duct is connected to the return air inlet, and the other end of the drying air duct is connected to the drying chamber. The drying duct is configured to supply gas for drying clothes into the drying chamber and to draw gas from the first chamber through the return air vent. A cooling air duct is formed on the rear end wall of the outer cylinder facing the inner cylinder, and the return air inlet is formed in the inner cavity of the cooling air duct; The cooling duct is provided with a partition, which divides the inner cavity of the cooling duct into a first duct cavity and a second duct cavity, and divides the return air inlet into a first return air inlet and a second return air inlet. The first duct cavity is connected to the first return air inlet, and the second duct cavity is connected to the second return air inlet. The cooling air duct includes: The first air inlet connects the first cavity to the first air duct cavity, so that the first cavity is connected to the first return air inlet via the first air duct cavity. The second air inlet connects the first cavity and the second air duct cavity, so that the first cavity is connected to the second return air inlet via the second air duct cavity; The first water outlet is connected to the first air duct cavity; The second water outlet is connected to the second air duct cavity; At least a portion of the structure of the cooling duct is a condenser plate cooled by a cooling mechanism, and a portion of the condenser plate is used to enclose the first duct cavity, and a portion of the condenser plate is used to enclose the second duct cavity. Under the suction effect of the drying air duct, the gas in the drying chamber enters the first air duct cavity through the first cavity and the first air inlet, and enters the second air duct cavity through the first cavity and the second air inlet, and flows back to the drying air duct from the first return air inlet and the second return air inlet respectively. The gas entering the first and second air ducts flows over the surface of the condenser plate, causing the water vapor in the gas to condense into condensate. The condensate can be discharged from the first air duct through the first outlet and from the second air duct through the second outlet.

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