Clothes drying apparatus

Abstract

The present disclosure provides a clothes drying device, which relates to the technical field of household appliances, and comprises a cabinet, an outer drum, an inner drum, a drying air duct, a cooling air duct, a condensing disc and a cooling mechanism for cooling the condensing disc. The inner side of the rear end wall of the outer drum is provided with a return air inlet and the cooling air duct. The inner drum has a drying cavity. The drying air duct can provide drying gas and form an air circulation loop with the cooling air duct, the return air inlet and the drying cavity. The condensing disc is arranged in the cooling air duct. In the above technical solution, the wet and hot air from the inner drum can be forced into the cooling air duct and flow through the condensing disc by the action of the fan in the drying air duct, so that the wet and hot air can fully contact the surface of the condensing disc, the water in the wet and hot air can be quickly condensed into water and discharged, the water content in the wet and hot air can be greatly reduced, the wet and hot air can be changed into dry and cold air with low water content, and the dehumidification efficiency of the condensing disc is improved.

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, condenser dryers on the market use a condenser tray inside the outer drum to improve drying heat exchange efficiency. However, during the process of the condenser tray cooling the humid air inside the outer drum, the contact between the condenser tray and the humid air is insufficient, resulting in low dehumidification efficiency and failing to meet the demand for rapid drying. Utility Model Content

[0004] In view of this, the purpose of this disclosure is to provide a clothes drying device to improve the technical problem of low dehumidification efficiency of the condenser plate due to insufficient contact between the condenser plate and the humid air 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, comprising: a housing; an outer drum disposed inside the housing, with a return air vent provided on the inner side of the outer drum; an inner drum rotatably disposed inside the outer drum, the inner drum forming a drying chamber capable of accommodating clothes, a cavity between the inner drum and the outer drum being a first cavity, the drying chamber being connected to the return air vent via the first cavity; and a drying duct disposed outside the outer drum, one end of the drying duct being connected to the return air vent, and the other end of the drying duct being connected to the drying chamber; the drying duct is configured to supply gas for drying clothes into the drying chamber and to extract gas through the return air vent. The first cavity contains gas; a cooling duct is formed on the rear end wall of the outer cylinder facing the inner cylinder, and a return air inlet is formed in the inner cavity of the cooling duct; the cooling duct has an air inlet and a first water outlet, the air inlet is configured to connect the first cavity and the inner cavity of the cooling duct, so that the first cavity is connected to the return air inlet; a condenser plate and a cooling mechanism for cooling the condenser plate, at least part of the condenser plate is disposed in the inner cavity of the cooling duct; the condenser plate is configured to condense water vapor in the gas flowing over the surface of the condenser plate into condensate, and collect at least part of the condensate to the first water outlet for discharge from the cooling duct.

[0007] In the above technical solution, a cooling air duct is provided on the side of the rear wall of the outer cylinder facing the inner cylinder. This cooling air duct is connected to both the first cavity and the return air inlet. The condenser plate is placed inside the cooling air duct, and with the action of the fan in the drying air duct, the humid and hot air coming out of the inner cylinder is forced through the first cavity and the air inlet to reach the inner cavity of the cooling air duct and flow through the condenser plate. This allows the humid and hot air to have sufficient contact with the surface of the condenser plate, and the water vapor in the humid and hot air is quickly condensed into water and discharged, which can significantly reduce the moisture content in the humid and hot air, turning it into dry and cold air with low moisture content, thus improving the dehumidification efficiency of the condenser plate. 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 and can increase the drying speed. Moreover, the condensed water can be discharged in time through the first water outlet to prevent the condensed water from remaining in the cooling air duct for a long time and evaporating into water vapor, thereby affecting the humidity of the air entering the drying air duct.

[0008] In some embodiments, the cooling duct includes: a groove recessed in the rear end wall of the outer cylinder facing the inner cylinder along a direction away from the inner cylinder; a cover plate laid at the opening of the groove and covering a portion of the opening of the groove; the space between the cover plate and the groove forms the inner cavity of the cooling duct; the portion of the opening of the groove not covered by the cover plate forms an air inlet; and a first water outlet is formed at the lowest point of the groove in the top-bottom direction of the housing.

[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, and the rotating shaft assembly is 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; in the extending direction of the groove, the groove has two ends, namely a first end and a second end, one of the air inlet and the air return outlet is provided at the first end, and the other is provided at the second end.

[0011] In the above technical solution, the air inlet and return air outlet are set at the two ends of the groove, so that the hot and humid air entering from the air inlet can flow through the complete cooling air duct and then enter the drying air duct from the return air outlet. This increases the flow path of the hot and humid air in the cooling air duct. Since the condenser is installed in the cooling air duct, the hot and humid air can have more complete contact with the surface of the condenser, which can improve the dehumidification efficiency of the condenser and help to increase the speed of drying clothes.

[0012] In some embodiments, at least a portion of the groove surrounds the top of the mounting hole; in the left-right direction of the housing, the first end and the second end are respectively located on both sides of the mounting hole; in the top-bottom direction of the housing, the lowest point of the first end is lower than the lowest point of the second end; wherein, the lowest point of the first end forms a first water outlet, the lowest point of the second end forms a second water outlet, and the second water outlet is configured to communicate with the inner cavity of the cooling air duct and the first cavity.

[0013] In the above technical solution, a first water outlet and a second water outlet are provided at the lowest point of both ends of the groove. Both the first water outlet and the second water outlet can discharge the condensed water in the cooling air duct in a timely manner, so as to avoid the condensed water remaining in the cooling air duct as much as possible, and prevent the condensed water from being evaporated into water vapor in the cooling air duct for a long time, thereby affecting the humidity of the gas entering the drying air duct.

[0014] In some embodiments, the air inlet is a first recess connected to the groove, the first water outlet is a second recess connected to the groove, and the second water outlet is a third recess connected to the groove.

[0015] In particular, along the direction away from the inner cylinder, the first recess, the second recess, and the third recess are all recessed into the rear end wall of the outer cylinder on the side facing the inner cylinder.

[0016] In the above technical solution, the air inlet, the first water outlet, and the second water outlet are designed as recesses connected to the groove, allowing them to be integrally manufactured with the groove. This simplifies the manufacturing process and reduces costs. Furthermore, the structure of the condenser tray does not need to be altered during its fabrication to form the air inlet, the first water outlet, and the second water outlet, simplifying the manufacturing process and reducing manufacturing difficulty. Simultaneously, the condensate accumulated at the first and second water outlets flows downwards along the rear wall of the outer cylinder, minimizing the risk of condensate from the first water outlet splashing into the inner cylinder, wetting clothes, and affecting drying speed and effectiveness.

[0017] In some embodiments, in the front-rear direction of the housing, the groove has a rear groove wall disposed opposite to the cover plate; in the front-rear direction of the housing, the condenser plate is disposed at intervals with the rear groove wall and the cover plate respectively, so that a first channel is formed between the condenser plate and the rear groove wall, and a second channel is formed between the condenser plate and the cover plate; wherein, at least one of the first channel and the second channel is connected to the air inlet and the air outlet.

[0018] In the above technical solution, a first channel and a second channel are provided within the cooling air duct, allowing both surfaces of the condenser tray in the front-rear direction of the housing to be exposed within the cooling air duct. Both surfaces can exchange heat with the humid air entering the cooling air duct, increasing the heat exchange area between the condenser tray and the humid air, thereby improving the dehumidification efficiency of the condenser tray and helping to increase the speed of drying clothes. Furthermore, the cooling mechanism can cool both surfaces of the condenser tray exposed within the cooling air duct to quickly lower the temperature of the condenser tray, further improving its heat exchange efficiency.

[0019] In some embodiments, the surface of the condenser plate facing the rear tank wall is a first surface, and the surface of the condenser plate facing the cover plate is a second surface; the cooling mechanism includes a liquid inlet disposed inside the outer cylinder, the liquid inlet being configured to provide coolant and guide the coolant to be sprayed toward at least one of the first surface and the second surface; the bottom of the outer cylinder is provided with a drain outlet, the drain outlet being configured to discharge coolant and condensate from the outer cylinder.

[0020] In the above technical solution, the cooling mechanism uses liquid cooling to cool the condenser plate. When the coolant is sprayed onto the surface of the condenser plate, the coolant will also directly exchange heat with some of the humid and hot air in the cooling air duct, which can improve the heat exchange efficiency of the humid and hot air and help to increase the speed of drying clothes.

[0021] In some embodiments, the cooling air duct includes:

[0022] A duct plate is laid on the rear end wall of the outer cylinder facing the inner cylinder; the duct plate has a recessed part, which is recessed into the rear end wall of the duct plate facing the outer cylinder along the direction close to the inner cylinder; the space enclosed by the recessed part and the rear end wall of the outer cylinder forms the inner cavity of the cooling air duct; an opening is provided on the recessed part to connect the first cavity and the inner cavity of the cooling air duct to form an air inlet; a first water outlet is formed at the lowest point of the recessed part in the top-bottom direction of the box.

[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, comprising: a housing; an outer drum disposed inside the housing, with a return air vent on its inner side; an inner drum rotatably disposed inside the outer drum, the inner drum forming a drying chamber capable of accommodating clothes, a cavity between the inner drum and the outer drum being a first cavity, the drying chamber being connected to the return air vent via the first cavity; a drying duct disposed outside the outer drum, one end of the drying duct being connected to the return air vent, and the other end of the drying duct being 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 cavity via the return air vent; and a cooling duct, comprising: a groove recessed in the rear end wall of the outer drum towards the inner drum in a direction away from the inner drum; and a cooling duct for supplying gas to the drying chamber. A condenser plate for cooling is laid at the opening of a groove, forming a cooling air duct cavity in the space between the condenser plate and the groove. The return air inlet is located inside the air duct cavity. The cooling air duct has an air inlet and a first water outlet. The air inlet is configured to connect the first cavity and the air duct cavity, so that the first cavity is connected to the return air inlet. The first water outlet is formed at the lowest point of the cooling air duct in the top-bottom direction of the housing. Under the suction of the drying air duct, the gas in the drying chamber enters the air duct cavity through the first cavity and the air inlet, and flows back to the drying air duct from the return air inlet. The gas entering the air duct cavity flows over the surface of the condenser plate, causing the water vapor in the gas to condense into condensate, and at least part of the condensate collects at the first water outlet to be discharged from the air duct cavity.

[0025] In the above technical solution, the cooling air duct is connected to both the first cavity and the return air inlet. Combined with the action of the fan in the drying air duct, it forces the humid, hot air from the inner cylinder through the first cavity and the air inlet to reach the air duct cavity of the cooling air duct and flow through the condenser plate. This allows the humid, hot air to fully contact the surface of the condenser plate, causing the water vapor in the humid, hot air to quickly condense into water and be discharged. This significantly reduces the moisture content of the humid, hot air, transforming it into dry, cool air with low moisture content, thus improving the dehumidification efficiency of the condenser plate. The dry, cool air, after entering the drying air duct through the return air inlet, can be heated into dry, hot air with low moisture content. This dry, hot air can continue to dry the clothes, facilitating the evaporation of moisture from the clothes and increasing the drying speed. Meanwhile, the cooling air duct is formed by a condenser plate and a groove. The groove is recessed on the rear end wall of the outer cylinder in the direction away from the inner cylinder, and the condenser 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 cabinet more compact and reasonable.

[0026] Thirdly, a clothes drying device is also provided, comprising: a housing; an outer drum disposed inside the housing, with a return air vent on the rear end wall of the outer drum; an inner drum rotatably disposed inside the outer drum, the inner drum forming a drying chamber capable of accommodating clothes, the cavity between the inner drum and the outer drum being a first cavity, the drying chamber being connected to the return air vent via the first cavity; a drying duct disposed outside the outer drum, one end of the drying duct being connected to the return air vent, and the other end of the drying duct being 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 cavity via the return air vent; and a cooling duct, comprising: a baffle protruding from the rear end wall of the outer drum towards the inner drum along the direction close to the inner drum; and a cooling mechanism. A cooling condenser is laid on the side of the enclosure facing the inner cylinder, so that the space between the condenser, the enclosure and the rear end wall of the outer cylinder forms a cooling air duct cavity, and the return air inlet is located in the air duct cavity; the cooling air duct has an air inlet and a first water outlet; the air inlet is configured to connect the first cavity and the air duct cavity, so that the first cavity is connected to the return air inlet; the first water outlet is formed at the lowest point of the cooling air duct in the top-bottom direction of the box; under the suction of the drying air duct, the gas in the drying chamber enters the air duct cavity through the first cavity and the air inlet, and flows back to the drying air duct from the return air inlet; wherein, the gas entering the air duct cavity flows over the surface of the condenser, so that the water vapor in the gas is condensed into condensate, and at least part of the condensate collects at the first water outlet to be discharged from the air duct cavity.

[0027] In the above technical solution, the cooling air duct is connected to both the first cavity and the return air inlet. Combined with the action of the fan in the drying air duct, it forces the humid, hot air from the inner cylinder through the first cavity and the air inlet to reach the air duct cavity of the cooling air duct and flow through the condenser plate. This allows the humid, hot air to fully contact the surface of the condenser plate, causing the water vapor in the humid, hot air to quickly condense into water and be discharged. This significantly reduces the moisture content of the humid, hot air, transforming it into dry, cool air with low moisture content, thus improving the dehumidification efficiency of the condenser plate. The dry, cool air, after entering the drying air duct through the return air inlet, can be heated into dry, hot air with low moisture content. This dry, hot air can continue to dry the clothes, facilitating the evaporation of moisture from the clothes and increasing the drying speed. Meanwhile, the cooling duct is composed of a condenser plate, the rear end wall of the outer cylinder, and a baffle. The baffle protrudes from the rear end wall of the outer cylinder in the direction close to the inner cylinder, and the condenser plate is laid on the side of the baffle facing the inner cylinder. The cooling duct can be formed simply by adding a baffle and a condenser plate to the existing product. It has the characteristics of small process modification and low modification cost. In addition, there is no need to open a groove on the rear end wall of the outer cylinder to set up the cooling duct, so it will not affect the structural strength of the outer cylinder. Attached Figure Description

[0028] 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.

[0029] Figure 1 This is a three-dimensional structural diagram of a clothes drying device provided according to some embodiments of the present disclosure;

[0030] 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;

[0031] 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;

[0032] Figure 4 for Figure 3 Schematic diagram of cross section along the AA direction;

[0033] 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;

[0034] Figure 6 This is a three-dimensional structural diagram of an outer cylinder provided according to some embodiments of the present disclosure;

[0035] Figure 7 This is a schematic front view of an outer cylinder structure provided according to some embodiments of the present disclosure;

[0036] Figure 8 This is a schematic front view of an outer cylinder after the condenser plate has been removed, according to some embodiments of this disclosure;

[0037] Figure 9 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;

[0038] Figure 10 This is a schematic front view of an outer cylinder after the cover plate has been removed, according to some embodiments of this disclosure;

[0039] Figure 11 This is a schematic front view of an outer cylinder after removing the cover plate and condenser plate according to some embodiments of this disclosure;

[0040] Figure 12 This is a rear view structural diagram of an outer cylinder provided according to some embodiments of the present disclosure;

[0041] Figure 13 for Figure 12 Schematic diagram of cross section along the BB direction;

[0042] Figure 14 for Figure 13 Enlarged structural diagram of section C;

[0043] Figure 15 This is a side cross-sectional view of a condenser plate arranged in a cooling duct according to some embodiments of the present disclosure, using a first layout.

[0044] Figure 16 This is a side cross-sectional view of a second layout of a condenser plate within a cooling duct, according to some embodiments of the present disclosure.

[0045] Figure 17 This is a side cross-sectional view of a condenser plate arranged in a third layout within a cooling duct, according to some embodiments of the present disclosure.

[0046] Figure 18 This is a three-dimensional structural diagram of an outer cylinder with another cooling air duct provided according to some embodiments of the present disclosure;

[0047] Figure 19 This is a three-dimensional structural diagram of a cooling air duct provided inside an outer cylinder according to some embodiments of the present disclosure.

[0048] The attached figures are labeled as follows:

[0049] 1-Box body, 11-Dispensing port, 12-Door body;

[0050] 2-Outer cylinder, 21-Rear end wall, 211-Mounting hole, 22-Return air inlet, 23-Liquid inlet, 24-Liquid outlet, 25-Cooling air duct, 251-Groove, 2511-Rear groove wall, 2512-Air inlet, 2513-First water outlet, 2514-Second water outlet, 252-Cover plate, 253-Inner cavity of cooling air duct, 2531-First channel, 2532-Second channel, 2533-Third channel, 2534-Fourth channel, 26-First cavity;

[0051] 3-Door seal ring;

[0052] 4-Inner cylinder, 41-Drying chamber, 42-Rotating shaft assembly, 43-Through hole;

[0053] 5-Drying air duct, 51-Heating device, 52-Fan, 53-Air guide pipe;

[0054] 6-Condensation tray;

[0055] 7-Screw post;

[0056] 8-Enclosure. Detailed Implementation

[0057] 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.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] 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.

[0066] In the description of this disclosure, "multiple" means two or more (including two), unless otherwise expressly and specifically limited.

[0067] 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.

[0068] 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 the condenser due to insufficient contact between the condenser and the humid air in the related art, and obtain the technical solution of the embodiments of this disclosure through reasonable analysis.

[0069] 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, clothes dryers on the market use a heating device to heat air into dry hot air. This dry hot air then penetrates the clothes, creating humid hot air. This humid hot air is then heated again to remove moisture before continuing to penetrate the clothes, repeating this cycle multiple times to achieve the purpose of drying the clothes. To improve drying heat exchange efficiency, a condenser plate is often installed inside the outer drum to remove moisture from the humid hot air. During drying, dry hot air comes into contact with wet clothes to form humid hot air. This humid hot air then comes into contact with the condenser coil, causing its temperature to drop rapidly and condensing the moisture in the air to form relatively dry cold air. This relatively dry cold air is drawn into the drying duct through the return air vent. The heating device in the drying duct heats this relatively dry cold air back into dry hot air for use in drying clothes. During this process, the temperature of the condenser coil rises after heat exchange with the humid hot air, requiring a cooling mechanism to lower its temperature and ensure its condensation performance. However, during the cooling process of the condenser coil, some humid hot air may bypass the condenser coil and enter the drying duct directly through the return air vent. This results in insufficient contact between the condenser coil and the humid hot air inside the outer drum, leading to low dehumidification efficiency of the condenser coil. The dehumidified air has a high moisture content and is more likely to reach saturated vapor pressure, which is not conducive to the evaporation of moisture from the clothes and fails to meet the requirements for rapid drying.

[0070] 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 installing a condenser plate inside the cooling air duct, and with the help of a fan, hot and humid air can be introduced into the cooling air duct and fully contact the surface of 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 of the condenser plate in the prior art.

[0071] 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.

[0072] 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.

[0073] Please refer to the above. Figures 1 to 14 , Figure 1 A three-dimensional structural diagram of a clothes drying device is provided, showing a specific construction of the housing. Figures 2 to 4A 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 schematic diagram of the interior of the outer cylinder at different angles is provided, showing the layout of the cooling air duct and its related structures inside the outer cylinder. Figures 12 to 14 A side view sectional view of a cooling duct is provided, showing the internal structure of the cooling duct.

[0074] 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.

[0075] 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.

[0076] 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 1. The dispensing port 11 is connected to the receiving cavity.

[0077] 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.

[0078] 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.

[0079] 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.

[0080] 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.

[0081] 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.

[0082] 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.

[0083] 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.

[0084] Furthermore, the cavity between the inner cylinder 4 and the outer cylinder 2 is the first cavity 26. It should be understood that the first cavity 26 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 26. Since the return air port 22 is exposed inside the first cavity 26, the drying cavity 41 can be connected to the return air port 22 through the first cavity 26.

[0085] 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 26, the return air port 22 and the drying air duct 5 can form an air drying circulation loop.

[0086] 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 26 through the return air vent 22.

[0087] 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 26 can also be drawn back into the drying duct 5 through the return air port 22.

[0088] 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.

[0089] In this embodiment, as Figures 6 to 14 As shown, the clothes drying equipment also includes a cooling duct 25, a condenser plate 6, and a cooling mechanism.

[0090] Regarding cooling air duct 25, such as Figure 8 and Figure 11 As shown, a cooling duct 25 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 253 of the cooling duct, and an air inlet 2512 is also provided on the cooling duct 25. The air inlet 2512 is configured to connect the first cavity 26 with the inner cavity 253 of the cooling duct, so that the first cavity 26 is connected to the return air inlet 22. With this structural design, under the action of the fan 52 in the drying duct 5, the hot and humid air in the first cavity 26 can be drawn into the inner cavity 253 of the cooling duct through the air inlet 2512, and can then enter the drying duct 5 through the return air inlet 22 via the cooling duct 25.

[0091] For example, the air inlet 2512 is a first recess that communicates with the groove 251. In the direction away from the inner cylinder 4, the first recess is recessed into the side of the rear end wall 21 of the outer cylinder 2 facing the inner cylinder 4; and in the front-rear direction of the housing 1, the side of the first recess facing the inner cylinder 4 is not blocked by the condenser plate 6.

[0092] With the above structural design, the air inlet 2512 is set as a first recess that communicates with the groove 251, and the side of the first recess facing the inner cylinder 4 is not blocked by the condenser plate 6, so that the air inlet 2512 and the groove 251 are integrally made, and the processing technology is simple and the cost is low. In addition, the structure of the condenser plate 6 does not need to be changed in order to form the air inlet 2512 during the manufacturing process, which simplifies the manufacturing process of the condenser plate 6 and reduces the manufacturing difficulty.

[0093] Of course, the air inlet 2512 is not limited to the above-mentioned structural method. The air inlet 2512 can also be a hole opened on the condenser plate 6, with the hole connecting the ventilation duct cavity and the first cavity 26, so that hot and humid air can enter the ventilation duct cavity through the air inlet 2512.

[0094] Furthermore, the cooling duct 25 also has a first water outlet 2513, which can discharge condensate water inside the cooling duct 25. This structural design allows the condensate water to be discharged in a timely manner through the first water outlet 2513, preventing the condensate water from remaining in the cooling duct 25 for a long time and evaporating into water vapor, thereby affecting the humidity of the gas entering the drying duct 5.

[0095] For example, the first outlet 2513 is a second recess that communicates with the groove 251. In the direction away from the inner cylinder 4, the second recess is recessed into the side of the rear end wall 21 of the outer cylinder 2 facing the inner cylinder 4; and in the front-rear direction of the housing 1, the side of the second recess facing the inner cylinder 4 is not blocked by the condenser plate 6.

[0096] With the above structural design, the first outlet 2513 is set as a second recess that communicates with the groove 251, and the side of the second recess facing the inner cylinder 4 is not blocked by the condenser plate 6, so that the first outlet 2513 and the groove 251 are integrally made, and the processing technology is simple and the cost is low. In addition, the structure of the condenser plate 6 does not need to be changed in order to form the first outlet 2513 during the manufacturing process, which simplifies the manufacturing process of the condenser plate 6 and reduces the manufacturing difficulty.

[0097] At the same time, the condensate that accumulates at the first outlet 2513 can flow down along the rear end wall 21 of the outer cylinder 2, which can minimize the splashing of condensate from the first outlet 2513 into the inner cylinder 4, which would wet the clothes and affect the drying speed and effect.

[0098] Of course, the first outlet 2513 is not limited to the above-mentioned structural method. The first outlet 2513 can also be a hole opened on the condenser plate 6, with the hole connecting the ventilation duct cavity and the first cavity 26, so that the condensate can be discharged from the ventilation duct cavity.

[0099] It should be understood that if the air inlet 2512 is formed at the lowest point of the cooling air duct 25 in the top-bottom direction of the housing 1, the air inlet 2512 can be used as the first water outlet 2513, without the need to set up a separate first water outlet 2513, which simplifies the manufacturing process of the cooling air duct 25, reduces costs, and enhances the overall structural strength of the cooling air duct 25.

[0100] Regarding condenser plate 6, as follows Figures 6 to 10As shown, at least a portion of the condenser plate 6 is disposed in the inner cavity 253 of the cooling air duct. The condenser plate 6 is configured to condense water vapor in the gas flowing through the surface of the condenser plate 6 into condensate, and to collect at least a portion of the condensate to the first outlet 2513 for discharge from the cooling air duct 25.

[0101] The condenser plate 6 is used as a condenser to condense the air flowing through the cooling air duct 25 and dehumidify it. That is, the air in the cooling air duct 25 can exchange heat with the condenser plate 6 to remove moisture from the air and lower the air temperature. Then, the air can enter the drying air duct 5 from the return air port 22.

[0102] Alternatively, the condenser plate 6 may be made of metal.

[0103] Specifically, the condenser tray 6 can be made of stainless steel or aluminum alloy. Utilizing the properties of the metal material of the condenser tray 6, its thermal conductivity is much higher than that of plastic, resulting in high heat exchange efficiency. This allows humid and hot air to be cooled first by the metal condenser tray 6, 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.

[0104] Of course, the condenser plate 6 can also be made of other materials with high thermal conductivity.

[0105] Optionally, the condenser plate 6 and the cooling duct 25 can have the same structure and curvature, so that the condenser plate 6 has a larger heat exchange area in the cooling duct 25.

[0106] Specifically, the condenser plate 6 can be roughly in the shape of an arc-shaped plate, a semi-circular annular plate, or a circular annular plate.

[0107] Regarding the cooling mechanism, such as Figure 9 yes Figure 11 As shown, the temperature of the condenser plate 6 rises after heat exchange with the humid air. Therefore, a cooling mechanism is needed to cool the condenser plate 6 to maintain its good condensation performance. The cooling mechanism can use liquid cooling or air cooling, etc., and is not limited here.

[0108] With the above structural design, a cooling air duct 25 is provided on the side of the rear end wall 21 of the outer cylinder 2 facing the inner cylinder 4. The cooling air duct 25 is connected to the first cavity 26 and the return air port 22. The condenser plate 6 is placed in the cooling air duct 25. With the action of the fan 52 in the drying air duct 5, the humid and hot air coming out of the inner cylinder 4 can be forced to reach the inner cavity 253 of the cooling air duct through the first cavity 26 and the air inlet and flow through the condenser plate 6. This allows the humid and hot air to have full contact with the surface of the condenser plate 6. 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, thus improving the dehumidification efficiency of the condenser plate 6. After the dry and cold air enters the drying air 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 and can increase the drying speed.

[0109] Please refer to the above. Figure 8 and Figure 11 , Figure 8 A schematic diagram of the main structure of the outer cylinder after removing the condenser plate is provided; it shows the positional relationship of the cooling air duct inside the outer cylinder. Figure 11 A schematic diagram of the main structure of the outer cylinder after removing the cover plate and condenser plate is provided; it shows the positional relationship of the grooves inside the outer cylinder.

[0110] In some embodiments, such as Figure 8 As shown, the cooling air duct 25 includes a groove 251 and a cover plate 252.

[0111] Specifically, the groove 251 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, such as... Figure 11 As shown; the cover plate 252 is laid at the opening of the groove 251, and the cover plate 252 covers part of the opening of the groove 251, such as... Figure 8 As shown.

[0112] The space between the cover plate 252 and the groove 251 forms the inner cavity 253 of the cooling air duct; the part of the groove 251 that is not covered by the cover plate 252 forms the air inlet 2512; the lowest point of the groove 251 in the top-bottom direction (i.e. the height direction of the box 1) forms the first water outlet 2513.

[0113] With the above structural design, the cooling air duct 25 is formed by the groove 251 and the cover plate 252. The groove 251 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 252 is laid at the opening of the groove 251. 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.

[0114] Of course, the cooling air duct is not limited to the above-mentioned structural method. Another specific structure of the cooling air duct can be: the cooling air duct includes an air duct plate with a recess. Along the direction close to the inner cylinder 4, the recess is recessed on the side of the air duct plate facing the rear end wall 21 of the outer cylinder 2, and the air duct plate is laid on the side of the rear end wall 21 of the outer cylinder 2 facing the inner cylinder 4.

[0115] The space enclosed by the recess and the rear end wall 21 of the outer cylinder 2 forms the inner cavity of the cooling air duct; the recess is provided with an opening that connects the first cavity 26 and the inner cavity of the cooling air duct to form an air inlet; the recess has a first water outlet at the lowest point in the top-bottom direction of the box body 1.

[0116] With the above structural design, the cooling air duct is formed by the air duct plate with a concave part and the rear end wall 21 of the outer cylinder 2. Only the air duct plate needs to be added 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 251 on the rear end wall 21 of the outer cylinder 2, so it will not affect the structural strength of the outer cylinder 2.

[0117] 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 25 formed by the groove 251 and the cover plate 252 as an example.

[0118] Please refer to the above. Figure 4 , Figures 6 to 11 , Figure 4 A cross-sectional structural diagram of a clothes drying device after removing the casing is provided; the diagram shows the assembly relationship between the inner and outer cylinders. Figures 6 to 11 A schematic diagram of the interior of the outer cylinder at different angles is provided, showing the layout of the cooling air duct and its related structures inside the outer cylinder.

[0119] In some embodiments, such as 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, a mounting hole 211 is provided on the rear end wall 21 of the outer cylinder 2. After the rotating shaft assembly 42 passes through the mounting hole 211, it can be connected to a motor drive, so that the inner cylinder 4 can rotate inside the outer cylinder 2 under the drive of the motor.

[0120] For the rear end wall 21 of the outer cylinder 2 with the mounting hole 211, the specific layout of the groove 251 in the cooling air duct 25 on the rear end wall 21 of the outer cylinder 2 can be as follows: the groove 251 extends circumferentially around the mounting hole 211, and the groove 251 surrounds the outer periphery of the mounting hole 211, such as... Figure 7 , Figure 8 and Figure 11 As shown.

[0121] Furthermore, in the extending direction of the groove 251, the groove 251 has two ends, which are the first end and the second end, respectively. One of the air inlet 2512 and the air return outlet 22 is located at the first end, and the other is located at the second end.

[0122] With the above structural design, the air inlet 2512 and the return air inlet 22 are set at the two ends of the groove 251, so that the hot and humid air entering from the air inlet 2512 can flow through the complete cooling air duct and then enter the drying air duct 5 from the return air inlet 22. This increases the flow path of hot and humid air in the cooling air duct. Since the condenser plate 6 is installed in the cooling air duct, the hot and humid air can have more complete contact with the surface of the condenser plate 6, which can improve the dehumidification efficiency of the condenser plate 6 and help to increase the speed of drying clothes.

[0123] For example, one specific arrangement of the groove 251 on the rear end wall 21 of the outer cylinder 2 can be as follows: Figures 6 to 11 As shown, at least part of the groove 251 surrounds the top of the mounting hole 211; in the left-right direction of the housing 1, the first end and the second end of the groove 251 are respectively placed on both sides of the mounting hole 211; in the top-bottom direction of the housing 1, the lowest point of the first end is lower than the lowest point of the second end.

[0124] The first outlet 2513 is formed at the lowest point of the first end, and the second outlet 2514 is formed at the lowest point of the second end. The second outlet 2514 is configured to connect the inner cavity 253 of the cooling air duct with the first cavity 26.

[0125] It should be noted that, since at least part of the groove 251 surrounds the mounting hole 211, and the two ends of the groove 251 are located on both sides of the mounting hole 211, the lowest point of the groove 251 in the top-bottom direction of the housing 1 will be at least one of the lowest points of the two ends of the groove 251.

[0126] If the lowest points of the two ends of the groove 251 are at the same height, then a first water outlet 2513 can be formed at the lowest point of both ends of the groove 251, and these two first water outlets 2513 can discharge the condensate in the cooling air duct 25 in a timely manner. If the lowest points of the two ends of the groove 251 are at different heights, that is, the lowest point of the first end is lower than the lowest point of the second end, the lowest point of the first end forms a first water outlet 2513 and can discharge some condensate, while the lowest point of the second end is prone to condensate accumulation and cannot be discharged from the first water outlet 2513. Therefore, a second water outlet 2514 is provided at the lowest point of the second end, and the second water outlet 2514 connects the inner cavity 253 of the cooling air duct with the first cavity 26, so that the condensate accumulated at the lowest point of the second end can be discharged from the cooling air duct 25 in a timely manner.

[0127] With the above structural design, a first water outlet 2513 and a second water outlet 2514 are provided at the lowest point of both ends of the groove 251. Both the first water outlet 2513 and the second water outlet 2514 can discharge the condensed water in the cooling air duct 25 in a timely manner, so as to avoid the condensed water remaining in the cooling air duct 25 as much as possible, and prevent the condensed water from being evaporated into water vapor in the cooling air duct 25 for a long time, thereby affecting the humidity of the gas entering the drying air duct 5.

[0128] Optionally, the air inlet 2512 is located at the first end of the groove 251, and the return air outlet 22 is located at the second end of the groove 251; the first water outlet 2513 is located at the bottom of the air inlet 2512, and the second water outlet 2514 is located at the bottom of the return air outlet 22, as shown. Figure 7 , Figure 8 and Figure 11 As shown.

[0129] It should be noted that the second outlet 2514 connects the inner cavity 253 of the cooling air duct with the first cavity 26, and the second outlet 2514 is close to the return air inlet 22. Some of the humid and hot air in the first cavity 26 can directly enter the drying air duct 5 from the return air inlet 22 through the second outlet 2514, preventing this part of the humid and hot air from flowing through the condenser plate 6. That is, this part of the humid and hot air is not dehumidified by the condenser plate 6, which increases the humidity of the air entering the drying air duct 5. To minimize the impact of this situation, the opening area of ​​the second outlet 2514 can be designed to be small, much smaller than the opening area of ​​the air inlet 2512. This allows most of the humid and hot air in the first cavity 26 to enter the cooling air duct 25 through the air inlet 2512, allowing only a small amount of humid and hot air to enter the cooling air duct 25 through the second outlet 2514, thereby reducing or even ignoring the impact on air humidity.

[0130] For example, the second outlet 2514 is a third recess that communicates with the groove 251; wherein, along the direction away from the inner cylinder 4, the third recess is recessed into the side of the rear end wall 21 of the outer cylinder 2 facing the inner cylinder 4; and, in the front-rear direction of the housing 1, the side of the third recess facing the inner cylinder 4 is not blocked by the condenser plate 6.

[0131] With the above structural design, the second outlet 2514 is set as a third recess that communicates with the groove 251, and the side of the third recess facing the inner cylinder 4 is not blocked by the condenser plate 6, so that the second outlet 2514 and the groove 251 are integrally made, and the processing technology is simple and the cost is low. In addition, the structure of the condenser plate 6 does not need to be changed in order to form the second outlet 2514 during the manufacturing process, which simplifies the manufacturing process of the condenser plate 6 and reduces the manufacturing difficulty.

[0132] At the same time, the condensate that accumulates at the second outlet 2514 can flow down along the rear end wall 21 of the outer cylinder 2, which can minimize the splashing of condensate from the second outlet 2514 into the inner cylinder 4, which would wet the clothes and affect the drying speed and effect.

[0133] Of course, the second outlet 2514 is not limited to the above-mentioned structural method. The second outlet 2514 can also be a hole opened on the condenser plate 6, with the hole connecting the ventilation duct cavity and the first cavity 26, so that the condensate can be discharged from the ventilation duct cavity.

[0134] It should be understood that, based on the specific shape of the groove 251, other water outlets can be opened in the groove 251 at locations where condensate is likely to accumulate, in order to minimize the presence of condensate in the cooling air duct 25.

[0135] Please refer to the above. Figures 14 to 17 , Figure 14 A side view sectional view of a cooling duct is provided, showing the internal structure of the cooling duct. Figures 15 to 17 Three side-view sectional structural diagrams of cooling air ducts are provided, showing different layouts of the condenser plate within the cooling air duct.

[0136] In some embodiments, such as Figure 14 As shown, the cooling air duct 25 is formed by a groove 251 and a cover plate 252. In the front-rear direction of the housing 1, the groove 251 has a rear groove wall 2511 that is opposite to the cover plate 252, and the condensation plate 6 is disposed between the rear groove wall 2511 and the cover plate 252.

[0137] The specific layout of the condenser plate 6 within the cooling air duct 25 includes, but is not limited to, the following methods:

[0138] The first layout method: such as Figure 15As shown, in the front-rear direction of the housing 1, the condenser plate 6 is spaced apart from the rear groove wall 2511 and the cover plate 252, so that a first channel 2531 is formed between the condenser plate 6 and the rear groove wall 2511, and a second channel 2532 is formed between the condenser plate 6 and the cover plate 252; wherein, at least one of the first channel 2531 and the second channel 2532 is connected to the air inlet 2512 and the air return outlet 22.

[0139] With the above structural design, a first channel 2531 and a second channel 2532 are provided in the cooling air duct 25, so that the surfaces of both sides of the condenser plate 6 in the front-rear direction of the housing 1 can be exposed in the cooling air duct 25. Both surfaces can exchange heat with the humid and hot air entering the cooling air duct 25, increasing the heat exchange area between the condenser plate 6 and the humid and hot air, which can improve the dehumidification efficiency of the condenser plate 6 and help to increase the drying speed of clothes. Moreover, the cooling mechanism can cool both surfaces of the condenser plate 6 exposed in the cooling air duct 25 to quickly cool down the condenser plate 6, which can improve the heat exchange efficiency of the condenser plate 6.

[0140] The second layout method: such as Figure 16 As shown, in the front-rear direction of the housing 1, the condenser plate 6 is closer to the rear groove wall 2511 than the cover plate 252, and part of the condenser plate 6 is in contact with the rear groove wall 2511, so that a third channel 2533 is formed between the condenser plate 6 and the cover plate 252; wherein, the third channel 2533 connects the air inlet 2512 and the air return outlet 22.

[0141] With the above structural design, the groove 251 is formed on the rear end wall 21 of the outer cylinder 2. The condenser plate 6 is set closer to the rear groove wall 2511 of the groove 251 in the cooling air duct 25, and part of the condenser plate 6 is in contact with the rear groove wall 2511. At the same time, due to the strong structure of the rear end wall 21 of the outer cylinder 2, the assembled condenser plate 6 can be strongly supported and more stable. It can prevent the condenser plate 6 from becoming unstable or even deformed due to the excessive air volume and speed entering the cooling air duct 25, so as to ensure the structural stability of the condenser plate 6 and reduce the impact of vibration generated during the operation of the drying equipment on the stability of the condenser plate 6.

[0142] The third layout method: such as Figure 17 As shown, in the front-rear direction of the housing 1, the condenser plate 6 is closer to the cover plate 252 than the rear groove wall 2511, and part of the condenser plate 6 is in contact with the cover plate 252, so that a fourth channel 2534 is formed between the condenser plate 6 and the rear groove wall 2511; wherein, the fourth channel 2534 connects the air inlet 2512 and the air return outlet 22.

[0143] With the above structural design, the condenser tray 6 is positioned closer to the cover plate 252 within the cooling air duct 25, and part of the condenser tray 6 is in contact with the cover plate 252, so that the cover plate 252 can provide support for the condenser tray 6, which can improve the stability of the condenser tray 6 after assembly; moreover, the condenser tray 6 can also exchange heat with the cover plate 252, so that the surface of the cover plate 252 facing the inner cylinder 4 can exchange heat with the humid and hot air in the first cavity 26, which can improve the dehumidification efficiency of the humid and hot air and help to increase the speed of drying clothes.

[0144] Please refer to the above. Figures 15 to 17 , Figures 15 to 17 Three side-view sectional structural diagrams of cooling air ducts are provided, showing different layouts of the condenser plate within the cooling air duct.

[0145] In some embodiments, such as Figures 15 to 17 As shown, the surface of the condenser plate 6 facing the rear tank wall 2511 is the first surface, and the surface of the condenser plate 6 facing the cover plate 252 is the second surface; the cooling mechanism includes a liquid inlet 23 disposed inside the outer cylinder 2, the liquid inlet 23 being configured to provide coolant and guide the coolant to be sprayed onto at least one of the first surface and the second surface; a drain outlet 24 is disposed at the bottom of the outer cylinder 2, the drain outlet 24 being configured to discharge coolant and condensate from the outer cylinder 2, and to discharge coolant and condensate to the outside of the drying equipment.

[0146] Alternatively, the coolant may be cold water or other pure liquid or mixture suitable for cooling the condenser plate 6, and there are no limitations on this.

[0147] With the above structural design, the cooling mechanism uses liquid cooling to cool the condenser plate 6. When the coolant is sprayed onto the surface of the condenser plate 6, the coolant will also directly exchange heat with some of the humid and hot air in the cooling air duct 25, which can improve the heat exchange efficiency of the humid and hot air and help to increase the speed of drying clothes.

[0148] Regarding the different specific layouts of the condenser plate 6 within the cooling duct 25, the cooling mechanism can employ corresponding methods to cool the condenser plate 6. Details are as follows:

[0149] like Figure 15 As shown, for the first layout of the condenser plate 6 within the cooling duct 25, the layout design of the flow channels for the coolant and humid air can include, but is not limited to, the following three cases:

[0150] 1) In the front-rear direction of the housing 1, the condenser plate 6 is spaced apart from the rear tank wall 2511 and the cover plate 252, so that the cooling air duct 25 is divided into a first channel 2531 and a second channel 2532. The first channel 2531 connects the liquid inlet 23 and the first water outlet 2513. The coolant flows in the first channel 2531 and is sprayed onto the first surface of the condenser plate 6, so that the coolant comes into contact with the first surface and exchanges heat. At least part of the coolant is discharged from the first water outlet 2513 to the drain outlet 24 and can be discharged from the drain outlet 24 to the outside of the drying equipment. The second channel 2532 connects the air inlet 2512 and the return air outlet 22. The hot and humid air entering through the air inlet 2512 flows in the second channel 2532. The hot and humid air comes into contact with the second surface of the condenser plate 6 and exchanges heat. Then it enters the drying air duct 5 from the return air outlet 22.

[0151] With the above structural design, the cooling air duct 25 is divided into a first channel 2531 and a second channel 2532 by the condenser plate 6. The first channel 2531 is mainly used for the flow of coolant, so that the coolant cools the first surface of the condenser plate 6. The second channel 2532 is mainly used for the flow of humid and hot air, so that the humid and hot air exchanges heat with the second surface of the condenser plate 6. This can prevent the coolant from entering the drying air duct 5 from the return air port 22 along with the dehumidified air, which would cause the air humidity to be higher and increase the drying burden.

[0152] Furthermore, the coolant flows from top to bottom within the first channel 2531, while the hot and humid air mainly enters the return air vent 22 through the second channel 2532. This greatly reduces the impact of hot and humid air on the flow path of the coolant within the first channel 2531, thereby reducing the influence of hot and humid air blowing the coolant and causing it to deviate from its normal flow path. This prevents certain areas of the condenser plate 6 from not receiving effective cooling due to insufficient heat exchange with the coolant, which in turn affects the condensation performance of the condenser plate 6.

[0153] 2) In the front-rear direction of the housing 1, the condenser plate 6 is spaced apart from the rear tank wall 2511 and the cover plate 252, so that the cooling air duct 25 is divided into a first channel 2531 and a second channel 2532. The first channel 2531 connects the air inlet 2512 and the return air inlet 22. The hot and humid air entering through the air inlet 2512 flows in the first channel 2531. The hot and humid air contacts the first surface of the condenser plate 6 and exchanges heat. Then it enters the drying air duct 5 from the return air inlet 22. The second channel 2532 connects the liquid inlet 23 and the first water outlet 2513. The coolant flows in the second channel 2532. The coolant is sprayed onto the second surface of the condenser plate 6, so that the coolant contacts the second surface and exchanges heat. At least part of the coolant is discharged from the first water outlet 2513 to the drain outlet 24 and can be discharged to the outside of the drying equipment from the drain outlet 24.

[0154] By adopting the above structural design, and setting the flow path of the coolant and the flow path of the humid air in the first channel 2531 and the second channel 2532 respectively, the coolant can be prevented from entering the drying air duct 5 from the return air port 22 along with the dehumidified air, thus preventing the air humidity from increasing and the drying burden from increasing. Moreover, the influence of the humid air blowing the coolant and causing it to deviate from the normal flow path can be reduced, so as to prevent some areas of the condenser plate 6 from not being able to exchange heat with sufficient coolant, resulting in ineffective cooling and thus affecting the condensation performance of the condenser plate 6.

[0155] 3) In the front-rear direction of the housing 1, the condenser plate 6 is spaced apart from the rear tank wall 2511 and the cover plate 252, dividing the cooling air duct 25 into a first channel 2531 and a second channel 2532. Both the first channel 2531 and the second channel 2532 are connected to the air inlet 2512 and the air return outlet 22, and both the first channel 2531 and the second channel 2532 are connected to the liquid inlet 23 and the first water outlet 2513. The coolant flows through the first channel 2531 and the second channel 2532, allowing the coolant to contact both the first and second surfaces of the condenser plate 6 and exchange heat; the humid and hot air entering through the air inlet 2512 flows through the first channel 2531 and the second channel 2532, allowing the humid and hot air to contact both the first and second surfaces of the condenser plate 6 and exchange heat.

[0156] With the above structural design, a first channel 2531 and a second channel 2532 are provided within the cooling air duct 25, allowing both the first and second surfaces of the condenser plate 6 to be exposed within the cooling air duct 25. Both surfaces can exchange heat with the humid air entering the cooling air duct 25, increasing the heat exchange area between the condenser plate 6 and the humid air, thereby improving the dehumidification efficiency of the condenser plate 6 and helping to increase the speed of drying clothes. Furthermore, the coolant provided by the cooling mechanism can cool both surfaces of the condenser plate 6 exposed within the cooling air duct 25, rapidly lowering the temperature of the condenser plate 6 and improving its heat exchange efficiency. Simultaneously, the coolant also directly contacts the humid air for heat exchange, and can also condense and dehumidify the humid air, further improving the heat exchange efficiency for the humid air.

[0157] like Figure 16 As shown, for the second layout of the condenser plate 6 within the cooling duct 25, the layout design of the flow channels for the coolant and humid air can be as follows:

[0158] In the front-rear direction of the housing 1, the condenser plate 6 is closer to the rear tank wall 2511 than the cover plate 252, and part of the condenser plate 6 is in contact with the rear tank wall 2511, forming a third channel 2533 between the condenser plate 6 and the cover plate 252. The third channel 2533 connects the air inlet 2512 and the air return vent 22. The humid and hot air entering through the air inlet 2512 flows through the third channel 2533, contacts the second surface of the condenser plate 6 and exchanges heat, and then enters the drying air duct 5 from the air return vent 22. The third channel 2533 also connects the liquid inlet 23 and the first water outlet 2513. The coolant flows through the third channel 2533 and is sprayed onto the second surface of the condenser plate 6, so that the coolant contacts the second surface and exchanges heat. At least part of the coolant is discharged from the first water outlet 2513 to the drain outlet 24, and can be discharged from the drain outlet 24 to the outside of the drying equipment.

[0159] With the above structural design, the coolant also comes into direct contact with the hot and humid air in the third channel 2533 to exchange heat. The coolant can also condense and dehumidify the hot and humid air, which helps to improve the heat exchange efficiency of the hot and humid air.

[0160] Of course, the coolant can also flow in the part of the first surface of the condenser plate 6 that is not in contact with the rear tank wall 2511, thereby increasing the heat exchange area between the coolant and the condenser plate 6 and improving the condensation performance of the condenser plate 6.

[0161] like Figure 17 As shown, for the third layout of the condenser plate 6 within the cooling duct 25, the layout design of the flow channel between the coolant and the humid air can be:

[0162] In the front-rear direction of the housing 1, the condenser plate 6 is closer to the cover plate 252 than the rear tank wall 2511, and part of the condenser plate 6 is in contact with the cover plate 252, forming a fourth channel 2534 between the condenser plate 6 and the rear tank wall 2511. The fourth channel 2534 connects the air inlet 2512 and the air return vent 22. The humid and hot air entering through the air inlet 2512 flows through the fourth channel 2534, contacts the first surface of the condenser plate 6 and exchanges heat, and then enters the drying air duct 5 from the air return vent 22. The fourth channel 2534 also connects the liquid inlet 23 and the first water outlet 2513. The coolant flows through the fourth channel 2534 and is sprayed onto the first surface of the condenser plate 6, so that the coolant contacts the first surface and exchanges heat. At least part of the coolant is discharged from the first water outlet 2513 to the drain outlet 24, and can be discharged from the drain outlet 24 to the outside of the drying equipment.

[0163] With the above structural design, the coolant also comes into direct contact with the hot and humid air in the fourth channel 2534 to exchange heat. The coolant can also condense and dehumidify the hot and humid air, which helps to improve the heat exchange efficiency of the hot and humid air.

[0164] Of course, the coolant can also flow in the part of the second surface of the condenser plate 6 that is not in contact with the cover plate 252, thereby increasing the heat exchange area between the coolant and the condenser plate 6 and improving the condensation performance of the condenser plate 6.

[0165] It should be noted that the cooling mechanism can also use air cooling to cool the condenser plate 6. That is, the cooling mechanism provides cooling air, which can be blown onto the first or second surface of the condenser plate 6 to cool it. It is important to note that when using air cooling, the mixing of the cooling air provided by the cooling mechanism with the humid, hot air flowing through the condenser plate 6 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 flow channels of the humid, hot air can be separated by a partition structure.

[0166] Please refer to the above. Figure 10 and Figure 11 , Figure 10 A schematic diagram of the main structure of the outer cylinder after the cover plate is removed is provided; it shows the structural relationship of the condenser plate being assembled in the groove by screw posts. Figure 11 A schematic diagram of the main structure of the outer cylinder after removing the cover plate and condenser plate is provided; it shows the layout design of the screw posts set in the groove.

[0167] In some embodiments, such as Figure 10 and Figure 11 As shown, in the cooling air duct 25, a screw post 7 is provided in the groove 251. The screw post 7 is fixed on the side of the groove 251 facing the cover plate 252 (that is, the screw post 7 is fixed on the rear groove wall 2511). The screw post 7 and the fastener can be used to fix the condenser plate 6 and the rear end wall 21 of the outer cylinder 2.

[0168] With the above structural design, the screw post 7 is fixed in the groove 251 of the rear end wall 21 of the outer cylinder 2. The screw post 7 and the rear end wall 21 of the outer cylinder 2 can be integrally formed, which makes the connection between the two more stable and the manufacturing process simple.

[0169] In addition, the condenser plate 6 can be supported by the screw column 7, so that there is a gap between the condenser plate 6 and the rear end wall 21 of the outer cylinder 2 and enough space is left for an appropriate amount of coolant to pass through, thereby enhancing the condensation efficiency and cooling effect of the condenser plate 6.

[0170] For example, one specific way in which the screw post 7 is disposed between the condenser plate 6 and the rear groove wall 2511 of the groove 251 is as follows: in the front-rear direction of the housing 1, one end of the screw post 7 is fixed to the rear groove wall 2511 of the groove 251, and the other end of the screw post 7 abuts against the condenser plate 6; the screw post 7 is adapted to be connected with a fastener passing through the condenser plate 6 so that the condenser plate 6 and the screw post 7 are locked together, thereby fixing the condenser plate 6 to the rear end wall 21 of the outer cylinder 2.

[0171] The fastener can be a screw, which includes a screw shank and a screw head. The screw shank has external threads on its outer periphery that fit into a threaded hole on the screw post 7, and the screw head is fixed to one end of the screw shank. Correspondingly, the condenser plate 6 has a hole that allows the screw threaded shank to pass through, but not the screw head. During installation, the screw threaded shank passes through the hole in the condenser plate 6 and connects to the threaded hole in the screw post 7, while the screw head presses the structure at the hole in the condenser plate 6 against the end of the screw post 7 to lock the condenser plate 6 and the screw post 7, thereby fixing the condenser plate 6 to the rear end wall 21 of the outer cylinder 2.

[0172] It should be noted that when the other end of the screw post 7 abuts against the condenser plate 6, it means that the screw post 7 and the condenser plate 6 are in surface contact; there is no gap between the screw post 7 and the condenser plate 6 after they abut against each other.

[0173] With the above structural design, during assembly, the screw post 7 and the condenser plate 6 make abutting contact, so that there is no gap between them. When using the fastener to pass through the hole on the condenser plate 6 and lock the condenser plate 6 on the screw post 7, the structural deformation or even tearing of the condenser plate 6 at the hole can be avoided due to the pressure of the fastener on the hole moving towards the screw post 7.

[0174] Optionally, there may be multiple screw posts 7, which are distributed between the condenser plate 6 and the rear groove wall 2511 of the groove 251. Correspondingly, the number of fasteners is consistent with the number of screw posts 7; the number of holes opened on the condenser plate 6 is consistent with the number of screw posts 7, and the position of the holes corresponds one-to-one with the distribution position of the screw posts 7.

[0175] Similarly, the fixed connection between the cover plate 252 and the rear end wall 21 of the outer cylinder 2 can also be achieved by using a screw post 7 and a fastener assembly. The fixed connection method between the cover plate 252 and the rear end wall 21 of the outer cylinder 2 can be referred to the fixed connection method between the condensation plate 6 and the rear groove wall 2511 of the groove 251 mentioned above, and will not be repeated here.

[0176] Of course, the condenser plate 6 and the cover plate 252 are not limited to being connected to the rear end wall 21 (or groove 251) of the outer cylinder 2 by means of screw post 7. The condenser plate 6 and the rear end wall 21 of the outer cylinder 2, as well as the cover plate 252 and the rear end wall 21 of the outer cylinder 2, can also be fixed by means of snap-fit, welding or other methods.

[0177] 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 the rear end wall 21 of the outer cylinder 2. 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 26, and the drying chamber 41 is connected to the return air vent 22 via the first cavity 26. 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 26 through the return air vent 22.

[0178] The main difference between this embodiment and the embodiments described above lies in the structure of the cooling air duct. Therefore, only the structure of the cooling air duct will be described in detail here.

[0179] like Figure 18 As shown, the cooling air duct 25 includes a groove 251 and a condenser plate 6.

[0180] Specifically, the groove 251 is recessed in the direction away from the inner cylinder 4 and is set on the side of the rear end wall 21 of the outer cylinder 2 facing the inner cylinder 4; the condensing plate 6 is laid at the groove opening of the groove 251, so that the space between the condensing plate 6 and the groove 251 forms the air duct cavity of the cooling air duct 25.

[0181] The cooling air duct 25 has a return air inlet 22 within its duct cavity. An air inlet 2512 is also provided on the cooling air duct 25, configured to connect the first cavity 26 and the duct cavity, thus connecting the first cavity 26 to the return air inlet 22. With this structural design, under the action of the fan 52 within the drying air duct 25, the humid and hot air in the first cavity 26 can be drawn into the cooling air duct 25's duct cavity through the air inlet 2512, and then enter the drying air duct 5 through the return air inlet 22.

[0182] Furthermore, the cooling duct 25 also has a first outlet 2513, which is formed at the lowest point of the cooling duct 25 in the top-to-bottom direction of the housing 1, so that the condensate or cooling water in the duct cavity flows to the lowest point in the duct cavity and is discharged from the first outlet 2513. This structural design allows the condensate to be discharged in a timely manner through the first outlet 2513, preventing the condensate from remaining in the duct cavity for a long time and evaporating into water vapor, thereby affecting the humidity of the gas entering the drying duct 5.

[0183] It should be understood that if the air inlet 2512 is formed at the lowest point of the cooling air duct 25 in the top-bottom direction of the housing 1, the air inlet 2512 can be used as the first water outlet 2513, without the need to set up a separate first water outlet 2513, which simplifies the manufacturing process of the cooling air duct 25, reduces costs, and enhances the overall structural strength of the cooling air duct 25.

[0184] Regarding condenser plate 6, as follows Figure 18 As shown, the condenser plate 6 is configured to condense water vapor in the gas flowing over its surface into condensate, and to collect at least a portion of the condensate into the first outlet 2513 for discharge from the duct cavity.

[0185] The condenser plate 6 is used as a condenser to condense the air flowing through the air duct cavity to dehumidify the air. That is, the air in the air duct cavity can exchange heat with the condenser plate 6 to remove the moisture in the air and reduce the temperature of the air. Then the air can enter the drying air duct 5 from the return air port 22.

[0186] Meanwhile, the condenser plate 6 also serves as a cover for the cooling air duct 25. The condenser plate 6 and the groove 251 together form the cooling air duct 25, and the space between the condenser plate 6 and the groove 251 forms the air duct cavity.

[0187] Alternatively, the condenser plate 6 may be made of metal.

[0188] Specifically, the condenser tray 6 can be made of stainless steel or aluminum alloy. Utilizing the properties of the metal material of the condenser tray 6, its thermal conductivity is much higher than that of plastic materials, resulting in high heat exchange efficiency. This allows humid and hot air to be cooled first by the metal condenser tray 6, 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.

[0189] Of course, the condenser plate 6 can also be made of other materials with high thermal conductivity, and this is not a limitation.

[0190] Optionally, the structure and curvature of the condenser plate 6 and the groove 251 can be kept consistent, so that the inside of the air duct cavity has a larger heat exchange area.

[0191] Specifically, the condenser plate 6 can be roughly in the shape of an arc-shaped plate, a semi-circular annular plate, or a circular annular plate.

[0192] Regarding the cooling mechanism, the temperature of the condenser plate 6 rises after heat exchange with the humid and hot air. Therefore, a cooling mechanism is needed to cool the condenser plate 6 to maintain its good condensation performance. The cooling mechanism can use liquid cooling or air cooling, etc., and is not limited to these methods.

[0193] With the above structural design, a cooling air duct 25 is provided on the inner side of the rear end wall 21 of the outer cylinder 2. The air duct cavity of the cooling air duct 25 is connected to the first cavity 26 and the return air port 22. With the action of the fan 52 in the drying air duct 5, the humid and hot air coming out of the inner cylinder 4 can be forced to reach the air duct cavity of the cooling air duct 25 through the first cavity 26 and the air inlet 2512 and flow through the condenser plate 6. This allows the humid and hot air to have full contact with the surface of the condenser plate 6. 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, thus improving the dehumidification efficiency of the condenser plate 6. After the dry and cold air enters the drying air 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 and can increase the drying speed.

[0194] Meanwhile, the cooling air duct 25 is formed by the condenser plate 6 and the groove 251. The groove 251 is recessed in the rear end wall 21 of the outer cylinder 2 in the direction away from the inner cylinder 4, and the condenser plate 6 is laid at the groove opening of the groove 251. 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.

[0195] This disclosure also provides a clothes drying device in its embodiments, 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 the rear end wall 21 of the outer cylinder 2. 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 26, and the drying chamber 41 is connected to the return air vent 22 via the first cavity 26. 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 26 through the return air vent 22.

[0196] The main difference between this embodiment and the embodiments described above lies in the structure of the cooling air duct. Therefore, only the structure of the cooling air duct will be described in detail here.

[0197] Specifically, the cooling duct includes a baffle 8 and a condenser plate 6; wherein, the baffle 8 protrudes from the rear end wall 21 of the outer cylinder 2 towards the inner cylinder 4 along the direction close to the inner cylinder 4; the condenser plate 6 is laid on the side of the baffle 8 facing the inner cylinder 4, so that the space between the condenser plate 6, the baffle 8 and the rear end wall 21 of the outer cylinder 2 forms the duct cavity of the cooling duct, and the return air inlet is located in the duct cavity. The cooling duct has an air inlet and a first water outlet; the air inlet is configured to connect the first cavity 26 and the duct cavity, so that the first cavity 26 is connected to the return air inlet 22; the first water outlet is formed at the lowest point of the cooling duct in the top-bottom direction of the housing 1, so that the condensate or cooling water in the duct cavity flows to the lowest point in the duct cavity and is discharged from the first water outlet.

[0198] Under the suction of the drying duct 5, the gas in the drying chamber 41 enters the duct cavity through the first cavity 26 and the air inlet, and flows back to the drying duct 5 from the return air inlet 22; wherein, the gas entering the duct cavity flows over the surface of the condenser plate 6, causing the water vapor in the gas to be condensed into condensate, and at least part of the condensate is collected at the first water outlet to be discharged from the duct cavity.

[0199] With the above structural design, the cooling air duct is formed by the condenser plate 6, the enclosure 8 and the rear end wall 21 of the outer cylinder 2. The enclosure 8 protrudes from the rear end wall 21 of the outer cylinder 2 in the direction close to the inner cylinder 4, and the condenser plate 6 is laid on the side of the enclosure 8 facing the inner cylinder 4. The air duct cavity is connected to both the first cavity 26 and the return air inlet 22. In conjunction with the fan 52 inside the drying air duct 5, it forces the humid and hot air coming out of the inner cylinder 4 through the first cavity 26 and the air inlet to reach the air duct cavity of the cooling air duct and flow through the condenser plate 6. This allows the humid and hot air to have full contact with the surface of the condenser plate 6, and the water vapor in the humid and hot air is quickly condensed into water and discharged. This can greatly reduce the moisture content in the humid and hot air, turning it into dry and cold air with low moisture content, thus improving the dehumidification efficiency of the condenser plate 6. 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 and can increase the drying speed.

[0200] Meanwhile, the cooling duct is formed by the condenser plate 6, the rear end wall 21 of the outer cylinder 2 and the enclosure 8. The enclosure 8 protrudes from the rear end wall 21 of the outer cylinder 2 in the direction close to the inner cylinder 4, and the condenser plate 6 is laid on the side of the enclosure 8 facing the inner cylinder 4. The cooling duct can be formed simply by adding the enclosure 8 and the condenser plate 6 to the original product. It has the characteristics of small process modification and low modification cost. In addition, in order to set up the cooling duct, there is no need to open the groove 251 on the rear end wall 21 of the outer cylinder 2, so it will not affect the structural strength of the outer cylinder 2.

[0201] For example, such as Figure 19 As shown, the enclosure 8 can be a U-shaped structure; wherein, along the direction close to the inner cylinder 4, the U-shaped structure protrudes from the rear end wall 21 of the outer cylinder 2 toward the inner cylinder 4.

[0202] Optionally, the U-shaped structure can be integrally formed with the rear end wall 21 of the outer cylinder 2; or, the U-shaped structure can be locked to the side of the rear end wall 21 of the outer cylinder 2 facing the inner cylinder 4 by means of fastening components such as bolt assemblies.

[0203] Specifically, the condenser plate 6 is laid on the side of the U-shaped structure facing the inner cylinder 4, so that the condenser plate 6, the U-shaped structure and the rear end wall 21 of the outer cylinder 2 together form a cooling air duct; wherein, the opening of the U-shaped structure can be used as an air inlet, and the return air inlet 22 is located inside the U-shaped structure and at the end away from the air inlet.

[0204] The first outlet can be a notch opened on the U-shaped structure, with the notch formed at the lowest point of the cooling air duct in the top-bottom direction of the housing 1.

[0205] It should be noted that if the air inlet is formed at the lowest point of the cooling duct in the top-bottom direction of the housing 1, the air inlet can be used as the first water outlet, without the need to set up a separate first water outlet. This simplifies the manufacturing process of the cooling duct, reduces costs, and enhances the overall structural strength of the cooling duct.

[0206] It should be understood that, based on the specific shape of the U-shaped structure, other water outlets can be opened in the locations where condensate is likely to accumulate within the U-shaped structure, in order to minimize the presence of condensate in the air duct cavity.

[0207] 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 apparatus, characterized by, The dryer comprises: a cabinet; an outer cylinder arranged inside the cabinet, an inner side of the outer cylinder being provided with an air return port; an inner cylinder rotatably arranged inside the outer cylinder, an inside of the inner cylinder being formed with a drying cavity capable of accommodating laundry, a cavity between the inner cylinder and the outer cylinder being a first cavity, the drying cavity being in communication with the air return port via the first cavity; a drying air duct arranged outside the outer cylinder, one end of the drying air duct being in communication with the air return port, the other end of the drying air duct being in communication with the drying cavity; the drying air duct being configured to provide gas for drying laundry into the drying cavity and extract gas in the first cavity through the air return port; a cooling air duct formed on one side of a rear end wall of the outer cylinder towards the inner cylinder, the cooling air duct being formed with the air return port in an inner cavity thereof; the cooling air duct being provided with an air inlet and a first water outlet, the air inlet being configured to communicate the first cavity with the inner cavity of the cooling air duct, so that the first cavity is in communication with the air return port; a condensing disc and a cooling mechanism for cooling the condensing disc, at least part of the condensing disc being arranged in the inner cavity of the cooling air duct; the condensing disc being configured to condense water vapor in gas flowing through a surface of the condensing disc into condensed water, and collect at least part of the condensed water to the first water outlet for discharge from the cooling air duct.

2. The dryer according to claim 1, wherein the cooling air duct comprises: a groove recessed on one side of a rear end wall of the outer cylinder towards the inner cylinder in a direction away from the inner cylinder; a cover plate laid on a slot of the groove and shielding part of the slot of the groove; a space between the cover plate and the groove forming the inner cavity of the cooling air duct; a part of the slot of the groove not shielded by the cover plate forming the air inlet; the first water outlet being formed at a lowest part of the groove in a top-bottom direction of the cabinet.

3. The dryer according to claim 2, wherein the inner cylinder is provided with a rotating shaft assembly on one side of the inner cylinder towards the rear end wall of the outer cylinder, the rotating shaft assembly being configured to rotate the inner cylinder inside the outer cylinder; the rear end wall of the outer cylinder is provided with a mounting hole for the rotating shaft assembly to pass through; the groove is arranged to extend around the mounting hole and surround an outer periphery of the mounting hole; in the extension direction of the groove, the groove has two ends, i.e. a first end and a second end, one of the air inlet and the air return port being arranged at the first end and the other being arranged at the second end.

4. The dryer according to claim 3, wherein at least part of the groove surrounds above the mounting hole; in a left-right direction of the cabinet, the first end and the second end are respectively arranged on two sides of the mounting hole; in a top-bottom direction of the cabinet, a lowest part of the first end is lower than a lowest part of the second end. The first outlet is formed at the lowest point of the first end, and the second outlet is formed at the lowest point of the second end. The second outlet is configured to connect the inner cavity of the cooling air duct with the first cavity.

5. The clothes drying equipment according to claim 4, characterized in that, The air inlet is a first recess connected to the groove, the first water outlet is a second recess connected to the groove, and the second water outlet is a third recess connected to the groove. In particular, along the direction away from the inner cylinder, the first recess, the second recess, and the third recess are all recessed into the rear end wall of the outer cylinder on the side facing the inner cylinder.

6. The clothes drying equipment according to claim 2, characterized in that, In the front-rear direction of the housing, the groove has a rear groove wall that is disposed opposite to the cover plate; In the front-rear direction of the housing, the condensation tray is spaced apart from the rear tank wall and the cover plate, forming a first channel between the condensation tray and the rear tank wall, and forming a second channel between the condensation tray and the cover plate. The first channel and at least one of the second channel are connected to the air inlet and the air return outlet.

7. The clothes drying equipment according to claim 6, characterized in that, The surface of the condenser plate facing the rear tank wall is the first surface, and the surface of the condenser plate facing the cover plate is the second surface; The cooling mechanism includes a liquid inlet disposed inside the outer cylinder, the liquid inlet being configured to provide coolant and guide the coolant to be sprayed toward at least one of the first surface and the second surface; The bottom of the outer cylinder is provided with a drain port, which is configured to allow the coolant and condensate to be discharged from the outer cylinder.

8. 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 recess is provided with an opening that connects the first cavity and the cooling air duct to form the air inlet; The first water outlet is formed at the lowest point of the recess in the top-bottom direction of the box body. 9.A clothes drying apparatus, characterized by, 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 interior of the inner drum forms a drying chamber capable of accommodating 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 via 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. Cooling air ducts, including: 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 condenser plate, cooled by a cooling mechanism, is placed at the opening of the groove, so that the space between the condenser plate and the groove forms the air duct cavity of the cooling air duct, and the return air inlet is located in the air duct cavity; The cooling duct has an air inlet and a first water outlet; The air inlet is configured to connect the first cavity and the air duct cavity, so that the first cavity is connected to the return air inlet; The first water outlet is formed at the lowest point of the cooling air duct in the top-to-bottom direction of the housing; Under the suction effect of the drying air duct, the gas in the drying chamber enters the air duct cavity through the first cavity and the air inlet, and flows back to the drying air duct from the return air inlet; The gas entering the air duct cavity flows over the surface of the condenser plate, causing the water vapor in the gas to condense into condensate, and at least a portion of the condensate collects at the first outlet to be discharged from the air duct cavity. 10.A clothes drying apparatus, characterized by, include: Box; An outer cylinder is located inside the housing, and a return air vent is provided on the rear end wall of the outer cylinder; The inner drum is rotatably disposed inside the outer drum, and the interior of the inner drum forms a drying chamber capable of accommodating 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 via 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. Cooling air ducts, including: The enclosure protrudes from the rear end wall of the outer cylinder toward the inner cylinder along the direction close to the inner cylinder; A condenser plate, cooled by a cooling mechanism, is laid on the side of the enclosure facing the inner cylinder, so that the space between the condenser plate, the enclosure, and the rear end wall of the outer cylinder forms the air duct cavity of the cooling air duct, and the return air inlet is located in the air duct cavity; The cooling duct has an air inlet and a first water outlet; The air inlet is configured to connect the first cavity and the air duct cavity, so that the first cavity is connected to the return air inlet; The first water outlet is formed at the lowest point of the cooling air duct in the top-to-bottom direction of the housing; Under the suction effect of the drying air duct, the gas in the drying chamber enters the air duct cavity through the first cavity and the air inlet, and flows back to the drying air duct from the return air inlet; The gas entering the air duct cavity flows over the surface of the condenser plate, causing the water vapor in the gas to condense into condensate, and at least a portion of the condensate collects at the first outlet to be discharged from the air duct cavity.

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