Clothes drying apparatus

Abstract

This disclosure provides a clothes drying device, relating to the field of household appliance technology. The device includes a housing and an outer cylinder, an inner cylinder, a drying duct, a condenser plate, and a cooling mechanism disposed within the housing. The outer cylinder has a return air inlet, and the inner cylinder has a drying chamber mounted inside the outer cylinder via a rotating shaft. The drying duct provides drying gas and forms an air circulation loop with the return air inlet and the drying chamber. The condenser plate is located on the rear wall of the outer cylinder facing the inner cylinder, and the cooling mechanism is used to cool the condenser plate. The condenser plate has pipes internally filled with a heat exchange medium. The pipes include a first main path and a branch path, which are vertically arranged and form a downward-facing bifurcation angle, which is an acute angle. In this technical solution, filling the pipes with a heat exchange medium improves the heat exchange efficiency of the condenser plate, and setting the bifurcation angle to an acute angle improves the circulation efficiency of the heat exchange medium in the pipes, resulting in higher efficiency in condensing and dehumidifying humid air and improving drying efficiency.

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 plate inside the outer drum, cooled by a cooling mechanism, to improve drying heat exchange efficiency. During drying, dry hot air comes into contact with wet clothes to form humid hot air. This humid hot air then exchanges heat with the condenser plate, causing the moisture in the humid hot air to condense and form relatively dry cool air. This relatively dry cool air can be extracted and heated back into dry hot air for continued use in drying clothes.

[0004] During this process, the heat exchange efficiency of the condenser plate is low, resulting in low efficiency in condensing and dehumidifying the humid air as it flows through the condenser plate during the drying operation. The efficiency of the airflow being reheated to dry the clothes is also low. Utility Model Content

[0005] In view of this, the purpose of this disclosure is to provide a clothes drying device to improve the technical problem of low heat exchange efficiency of the condenser plate in the prior art.

[0006] To achieve at least one of the above objectives, this disclosure provides the following technical solutions:

[0007] In a first aspect, a clothes drying device is provided, comprising:

[0008] Box;

[0009] The outer cylinder is located inside the housing, and a return air vent is provided on the rear wall of the outer cylinder;

[0010] The inner drum is rotatably disposed inside the outer drum, and the inner drum has a drying chamber that can accommodate clothes. The cavity between the inner drum and the outer drum is the first cavity, and the drying chamber is connected to the return air vent through the first cavity.

[0011] The drying air duct is located 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.

[0012] 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.

[0013] A condenser plate, cooled by a cooling mechanism, is located on the rear end wall of the outer cylinder facing the inner cylinder.

[0014] The condenser plate is equipped with pipes, and the pipes are filled with heat transfer fluid.

[0015] Piping includes:

[0016] The first trunk road has two ends, namely end a and end b, which are arranged opposite to each other in the extension direction of the first trunk road. In the top and bottom direction of the box, the position of end a is higher than the position of end b.

[0017] The branch road connected to the first trunk road has two ends, namely end c and end d, which are arranged opposite to each other in the extension direction of the branch road. In the top and bottom direction of the box, the position of end c is higher than the position of end d.

[0018] End c is connected to the first main road and is located between end a and end b, so that the branch road and the first main road form a bifurcation angle with an opening facing the bottom wall of the box, and the bifurcation angle is an acute angle.

[0019] In the above technical solution, pipes filled with heat transfer fluid are installed on the condenser plate to enhance the efficiency of heat exchange between the condenser plate and the outside, and accelerate the heat exchange between the hot and humid air and the cooling mechanism (coolant). This enables the condensation and dehumidification of hot and humid air at a higher rate. The pipes are distributed on the condenser plate through the main and branch lines to maximize the coverage area, i.e., the coverage area of ​​the heat transfer fluid. The larger the coverage area, the more significant the improvement in heat exchange efficiency. Furthermore, setting the bifurcation angle formed by the main and branch lines to an acute angle reduces the flow resistance of the heat transfer fluid at the bifurcation angle during the splitting or merging process, making the splitting and merging process of the heat transfer fluid smoother and improving the circulation efficiency of the heat transfer fluid within the pipes. Improved circulation efficiency of the heat transfer fluid enhances heat exchange efficiency, enabling the condensation and dehumidification of hot and humid air at a higher rate. The air becomes drier, and the subsequent drying process after heating through the drying duct is more efficient, thus improving the drying effect of the drying equipment.

[0020] In some embodiments, the bifurcation angle is α;

[0021] Where α satisfies: 35°<α<55°.

[0022] In the above technical solution, setting the bifurcation angle within the aforementioned range ensures a sufficiently large pipeline coverage area and heat exchange area, while also mitigating the problem of high flow resistance of the heat exchange medium within the pipeline. This guarantees efficient circulation of the heat exchange medium within the pipeline and improves the condensation and dehumidification efficiency of humid air. If the bifurcation angle is 35° or smaller, it indicates that the first main path and branch paths are close together. Although this can reduce the flow resistance of the heat exchange medium, it also leads to the first main path and branch paths being too close together, making it difficult to achieve the goal of dispersing the heat exchange medium over a large area on the condensation plate. To cover a sufficiently large area, the number of first main paths or branch paths needs to be increased, which will adversely affect the structural strength of the condensation plate and also result in resource waste. If the bifurcation angle reaches 55° or larger, it indicates that the first main path and branch paths are too dispersed, which will increase the resistance of the heat exchange medium when it splits and merges at the bifurcation angle, reduce the circulation efficiency of the heat exchange medium within the pipeline, and consequently reduce the efficiency of condensation and dehumidification of humid air.

[0023] In some embodiments, the first trunk road has a first side and a second side disposed opposite to each other along a first direction;

[0024] There are multiple branch roads, which are distributed on the first and second sides;

[0025] The connection point between the first trunk road and the branch road located on the first side is the first connection point, and the connection point between the first trunk road and the branch road located on the second side is the second connection point;

[0026] In the direction of extension of the first trunk road, the first connection point and the second connection point are arranged alternately;

[0027] The first direction is perpendicular to the front-rear direction of the box body and perpendicular to the extension direction of the first main road.

[0028] In the above technical solution, branches are distributed on both the first and second sides, making the combination of the first main road and the branches generally symmetrical. This improves the uniformity of the heat exchange medium distribution in the corresponding area of ​​the condenser plate, resulting in better dehumidification of humid air. It also improves the uniformity of the heat exchange medium flow from the first main road to the branches on the first and second sides, which helps to ensure the uniformity of heat exchange efficiency between the cold condenser plate and the outside, resulting in better overall heat exchange and better dehumidification of humid air. If the first connection point and the second connection point coincide, the heat exchange medium will be more inclined to flow into the branch located on the lower side, which will reduce the efficiency of heat exchange with the outside in the upwind side area of ​​the first main road to some extent, which is not conducive to efficient dehumidification of humid air.

[0029] In some embodiments, the rear end wall of the outer cylinder is provided with a mounting hole through which the rotation shaft of the inner cylinder passes;

[0030] The condenser plate has an outer edge and an inner edge;

[0031] The outer edge is the edge of the condenser plate near the outer peripheral wall of the outer cylinder;

[0032] The inner edge is the edge of the condenser plate near the mounting hole;

[0033] The pipeline also includes:

[0034] The outer edge path extends circumferentially along the outer periphery of the outer cylinder and is located at the outer edge.

[0035] The inner side path extends circumferentially along the mounting hole and is set at the inner edge;

[0036] The outer side road is connected to end a of the first main road, and the inner side road is connected to at least one of the ends b of the first main road and the end d of the branch road.

[0037] In the above technical solution, by setting the outer and inner side paths, on the one hand, the heat transfer medium can also circulate through the pipeline at the edge of the condenser plate, and all areas of the condenser plate have high heat exchange efficiency, reducing the problem that the pipeline cannot cover the edge of the condenser plate, resulting in low heat exchange efficiency at the edge of the condenser plate; on the other hand, multiple first trunk lines are connected to the outer and inner side paths, so that the heat transfer medium can also circulate among the multiple first trunk lines. The entire pipeline forms a circulation path, and the heat transfer medium circulates on the condenser plate, resulting in higher uniformity of heat transfer medium distribution and better effect of condensing and dehumidifying humid air.

[0038] In some embodiments, the pipeline further includes a second trunk line, which connects the outer side road and the inner side road;

[0039] There are multiple branch roads, and the d-end of some branch roads is connected to the second trunk road.

[0040] In the above technical solution, by setting up a second trunk line, more pathways are formed between the outer side path and the inner side path, which can further improve the uniformity of the heat transfer medium distribution on the condenser plate and the circulation efficiency in the pipeline.

[0041] In some embodiments, the condenser plate extends circumferentially around the mounting hole;

[0042] In the extending direction of the condenser, the condenser has a first end and a second end that are arranged opposite to each other;

[0043] The pipeline also includes:

[0044] The first connecting side path is located at the first end, and the first connecting side path connects the outer side path and the inner side path;

[0045] The second connecting side path is located at the second end, and the second connecting side path connects the outer side path and the inner side path;

[0046] The d-end of the branch is connected to at least one of the outer side road, the inner side road, the first connecting side road, and the second connecting side road.

[0047] In the above technical solution, the outer side path, inner side path, first connecting side path, and second connecting side path form a ring structure. This ring structure surrounds the edge of the condenser plate, covering as much of the condenser plate area as possible. The first main path and branch paths are distributed inside the ring structure, so that all parts and branches of the pipeline are interconnected, forming more pathways for the heat transfer medium to circulate. This results in higher circulation efficiency of the heat transfer medium within the pipeline and a better effect on improving the heat exchange efficiency of the heat transfer medium on the condenser plate. The d-end of the branch path can be connected to different parts of the pipeline according to actual needs, making it easier for the pipeline to cover the condenser plate more comprehensively during actual design and forming more circulation channels. This facilitates the circulation of the heat exchange medium at different locations on the condenser plate, resulting in better dehumidification of humid and hot air.

[0048] In some embodiments, a plane perpendicular to the left and right direction of the box and passing through the rotation axis of the inner cylinder is used as the reference plane;

[0049] The minimum distance between end a of the first trunk road and the reference plane is D1, and the minimum distance between end b of the first trunk road and the reference plane is D2.

[0050] There are multiple primary trunk roads, and at least some of them satisfy: D1≤D2;

[0051] The cooling mechanism includes a liquid inlet located inside the outer cylinder;

[0052] The inlet is configured to supply coolant and direct the coolant spray toward the top of the condenser plate;

[0053] The bottom of the outer cylinder is equipped with a drain port;

[0054] The drain port is configured to allow coolant to drain from the outer cylinder.

[0055] In the above technical solution, by setting D1≤D2, the distribution area of ​​the first main circuit can be reduced to be larger at the top and smaller at the bottom. On the one hand, the liquid heat exchange medium is located at end b in the first main circuit. This setting ensures that the coverage area of ​​the liquid heat exchange medium is large enough, i.e., the contact area for heat exchange with the humid and hot air is large enough, resulting in high heat exchange efficiency. On the other hand, the gaseous heat exchange medium is located at end a in the first main circuit. This setting alleviates the problem of the gaseous heat exchange medium being too dispersed, allowing for easier cooling. The liquid cools the gaseous heat exchange medium. The coolant flows through the inlet to the top of the condenser plate, with the upper end (end a) of the first main path being more concentrated at the top of the condenser plate. The coolant first contacts the top area of ​​the condenser plate, exchanging heat with the gaseous heat exchange medium, ensuring efficient cooling of the gaseous medium. As it extends towards the bottom wall of the tank, the heat content of the heat exchange medium decreases, and the cooling capacity of the coolant gradually decreases, achieving full utilization of the coolant, improving its utilization rate, and increasing the cooling efficiency of the heat exchange medium.

[0056] In some embodiments, the surface of the condenser plate facing the rear end wall of the outer cylinder is a first surface, and the surface of the condenser plate facing the inner cylinder is a second surface;

[0057] In the thickness direction of the condenser plate, the pipe protrudes from at least one of the first surface and the second surface.

[0058] In the above technical solution, setting the pipe to protrude from at least one of the first surface and the second surface can increase the contact area between the condenser plate and the outside, resulting in higher heat exchange efficiency with both humid and hot air and the cooling mechanism, and higher efficiency in condensing and dehumidifying humid and hot air. In addition, it can increase the cross-sectional area of ​​the pipe, allowing for a larger amount of heat exchange medium to be filled inside, thus further improving the heat exchange efficiency of the condenser plate.

[0059] Secondly, a clothes drying device is also provided, including:

[0060] Box;

[0061] The outer cylinder is located inside the housing, and a return air vent is provided on the rear wall of the outer cylinder;

[0062] The inner drum is rotatably disposed inside the outer drum, and the inner drum has a drying chamber that can accommodate clothes. The cavity between the inner drum and the outer drum is the first cavity, and the drying chamber is connected to the return air vent through the first cavity.

[0063] The drying air duct is located 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.

[0064] The drying air duct is configured to supply gas for drying clothes into the drying chamber and to extract gas from the first chamber through the return air vent.

[0065] A condenser plate, cooled by a cooling mechanism, is located on the rear end wall of the outer cylinder facing the inner cylinder.

[0066] The condenser plate is equipped with pipes, and the pipes are filled with heat transfer fluid.

[0067] Piping includes:

[0068] Multiple trunk roads, each trunk road having two ends, namely end a and end b, which are arranged opposite each other in the extension direction of the trunk road. In the top and bottom direction of the box body, the position of end a is higher than the position of end b.

[0069] The branch road connected to the main road has two ends, namely end c and end d, which are set opposite to each other in the extension direction of the branch road. In the top and bottom direction of the box, the position of end c is higher than the position of end d.

[0070] Some trunk roads connect to branch roads at end c, and some trunk roads connect to branch roads at end d;

[0071] The smallest angle formed by a branch road and a main road is an acute angle.

[0072] In the above technical solution, some main lines and branches are connected at end c, and some main lines and branches are connected at end d. This makes the flow path of the heat exchange medium inside the pipeline symmetrical during the process of rising from liquid to gas and falling from gas to liquid. During the rising process, there is diversion and convergence of the heat exchange medium. Similarly, during the falling process, there is also diversion and convergence of the heat exchange medium. This is beneficial to improving the circulation efficiency of the heat exchange medium and the uniformity of its distribution on the condenser plate. It also makes the heat exchange with the humid air and cooling mechanism more efficient, which is beneficial to improving the dehumidification efficiency of the humid air.

[0073] Thirdly, a clothes drying device is also provided, including:

[0074] Box;

[0075] The outer cylinder is located inside the housing, and a return air vent is provided on the rear wall of the outer cylinder;

[0076] The inner drum is rotatably disposed inside the outer drum, and the inner drum has a drying chamber that can accommodate clothes. The cavity between the inner drum and the outer drum is the first cavity, and the drying chamber is connected to the return air vent through the first cavity.

[0077] The drying air duct is located 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.

[0078] The drying air duct is configured to supply gas for drying clothes into the drying chamber and to extract gas from the first chamber through the return air vent.

[0079] A condenser plate, cooled by a cooling mechanism, is located on the rear end wall of the outer cylinder facing the inner cylinder.

[0080] The condenser plate is equipped with pipes, and the pipes are filled with heat transfer fluid.

[0081] Piping includes:

[0082] The trunk road has two ends, a and b, which are arranged opposite each other along the extension direction of the trunk road. In the top and bottom direction of the box body, the position of end a is higher than the position of end b.

[0083] A branch road connecting to a main road;

[0084] The reference plane is a plane perpendicular to the left and right direction of the box and passing through the rotation axis of the inner cylinder;

[0085] The minimum distance between end a of the trunk road and the reference plane is D1, and the minimum distance between end b of the trunk road and the reference plane is D2.

[0086] D1 and D2 satisfy: D1≤D2.

[0087] In the above technical solution, setting D1 and D2 to satisfy: D1≤D2, can reduce the situation where the distribution area of ​​the first trunk road is large at the top and small at the bottom; on the one hand, it ensures that the coverage area of ​​the heat exchange medium in the liquid state is large enough, that is, the contact area for heat exchange with the humid and hot air is large enough, and the heat exchange efficiency is high; on the other hand, it alleviates the problem of the heat exchange medium in the gaseous state being too dispersed, so that the gaseous heat exchange medium can be cooled more easily by the coolant. Attached Figure Description

[0088] 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.

[0089] Figure 1 This is a three-dimensional structural diagram of a clothes drying device provided according to some embodiments of the present disclosure;

[0090] 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;

[0091] Figure 3This is a side view of a clothes drying device provided according to some embodiments of the present disclosure after removing the housing;

[0092] Figure 4 for Figure 3 Schematic diagram of cross section along the AA direction;

[0093] 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;

[0094] Figure 6 This is a three-dimensional structural diagram of a condenser plate mounted on the rear end wall of an outer cylinder according to some embodiments of the present disclosure;

[0095] Figure 7 This is a schematic diagram of a three-dimensional structure of an outer cylinder according to some embodiments of the present disclosure;

[0096] Figure 8 This is a cross-sectional schematic diagram of a condenser plate provided according to some embodiments of the present disclosure;

[0097] Figure 9 This is a schematic diagram of the structure on the condenser plate according to some embodiments of the present disclosure;

[0098] Figure 10 This is a schematic diagram showing the positional relationship of a first trunk road relative to a reference plane according to some embodiments of this disclosure.

[0099] The attached figures are labeled as follows:

[0100] 1-Box body, 11-Dispensing port, 12-Door body;

[0101] 2-Outer cylinder, 21-Rear end wall, 22-Return air inlet, 23-First cavity, 24-Mounting hole, 25-Drain outlet;

[0102] 3-Door seal ring;

[0103] 4-Inner cylinder, 41-Drying chamber, 42-Rotating shaft, 43-Through hole;

[0104] 5-Drying air duct, 51-Heating device, 52-Fan, 53-Air guide pipe;

[0105] 6-Condensation plate, 61-First main circuit, 62-Second main circuit, 63-Branch circuit, 64-Outer side circuit, 65-Inner side circuit, 66-First connecting side circuit, 67-Second connecting side circuit, 68-Connecting hole, 69-Exhaust vent;

[0106] 7-Cooling mechanism, 71-Enclosed cavity, 72-Liquid inlet;

[0107] 8-Supplementary paragraph. Detailed Implementation

[0108] 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.

[0109] 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.

[0110] 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.

[0111] 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.

[0112] 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.

[0113] 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.

[0114] 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.

[0115] 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.

[0116] 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.

[0117] In the description of this disclosure, "multiple" means two or more (including two), unless otherwise expressly and specifically limited.

[0118] 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.

[0119] 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 problem in the related art where the heat exchange efficiency between the condenser and the humid air is low, thus affecting the drying efficiency of clothes. Through reasonable analysis, the technical solution of the embodiments of this disclosure is obtained.

[0120] 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 penetrating the clothes again, 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. This condenser plate is cooled by a cooling mechanism.

[0121] During the drying process, dry hot air comes into contact with wet clothes to form humid hot air. The humid hot air then comes into contact with the condenser coil for heat exchange, which causes the temperature of the humid hot air to drop rapidly. The moisture in the humid hot air is then condensed to form relatively dry cold air. This relatively dry cold air can be extracted and heated back into dry hot air for continued use in drying clothes.

[0122] It is evident that the efficiency of heat exchange between the condenser and the outside environment determines the effectiveness of dehumidifying humid air. Currently used condenser plates have low heat exchange efficiency with the outside environment, resulting in poor dehumidification of humid air. The dehumidified air still contains a large amount of moisture. After being reheated and transported to the clothes for drying, the large amount of moisture in the hot air leads to poor drying of wet clothes, resulting in low overall drying efficiency of the drying equipment.

[0123] To address this, the present disclosure provides a clothes drying device that improves the heat exchange efficiency between the condenser and the outside by setting up pipes on the condenser plate, filling the pipes with a heat transfer medium, and restricting the relative arrangement of the branches of the pipe structure. This allows for faster dehumidification of humid air, thereby solving the technical problem of low drying efficiency caused by low heat exchange efficiency between the condenser and the outside in the prior art.

[0124] 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.

[0125] Please refer to the above. Figures 1 to 7 , Figure 1 A three-dimensional structural diagram of a clothes drying device is provided, showing a specific construction of the housing. Figures 2 to 4 A schematic diagram of a clothes drying device with the casing removed is provided at different angles; it shows a structural relationship between the outer drum, the inner drum, and the drying air duct. Figure 5 A schematic diagram of the internal structure of a drying air duct is provided; it shows a specific construction of the drying air duct. Figure 6 A three-dimensional structural diagram of the outer cylinder is provided, showing the specific structure of the return air inlet; Figure 7 A schematic diagram of the outer cylinder is provided; it shows a specific structural schematic diagram of the condenser plate installed on the rear end wall of the cylinder.

[0126] 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.

[0127] Among them, the drying equipment can be a drum dryer or a drum washer-dryer combo, etc. For ease of description, the following will take a drum washer-dryer combo as an example to explain the structure of the drying equipment in detail.

[0128] 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 provides installation space for components such as the outer cylinder 2, the inner cylinder 4 and the drying air duct 5.

[0129] 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.

[0130] 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.

[0131] In this embodiment, as Figures 1 to 3 , Figure 6 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.

[0132] 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.

[0133] Furthermore, a return air inlet 22 is provided on the rear end wall 21; wherein, 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.

[0134] 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 7 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.

[0135] In this embodiment, as Figure 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 via a rotating shaft 42. The rotating shaft 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.

[0136] 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.

[0137] Furthermore, the cavity between the inner cylinder 4 and the outer cylinder 2 is the first cavity 23. It should be understood that the first cavity 23 is part of the inner cavity of the outer cylinder 2. A through hole 43 is provided on the side wall of the inner cylinder 4. The through hole 43 allows the drying cavity 41 to be connected to the first cavity 23. Since the return air port 22 is exposed in the first cavity 23, the drying cavity 41 can be connected to the return air port 22 through the through hole 43 and the first cavity 23.

[0138] In this embodiment, as Figure 2 , Figure 3 , Figure 5 , Figure 6 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 through hole 43, the first cavity 23, the return air port 22 and the drying air duct 5 can form an air drying circulation loop.

[0139] The drying duct 5 is configured to supply gas for drying clothes into the drying chamber 41 and to extract gas from the first chamber 23 through the return air vent 22.

[0140] Specifically, 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 from the drying duct 5 to enter the drying chamber 41 and dry the clothes inside. Simultaneously, under the action of the fan 52, air from the first chamber 23 can be drawn back into the drying duct 5 through the return air vent 22.

[0141] 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.

[0142] In this embodiment, as Figure 4 , Figure 6 , Figure 7 As shown, the drying equipment also includes a condenser tray 6, which is disposed on the side of the rear end wall 21 of the outer cylinder 2 facing the inner cylinder 4.

[0143] The condenser plate 6 is used as a condenser to condense the air flowing into the drying duct 5 through the return air inlet 22 in the outer cylinder 2, so as to dehumidify the air flowing through it; that is, the air in the first cavity 23 can exchange heat with the condenser plate 6 to reduce the temperature of the air and remove the moisture in the air, and then the air can enter the drying duct 5 again through the return air inlet 22.

[0144] Specifically, high-temperature air from the drying duct 5 enters the drying chamber 41, heating the clothes inside and removing moisture, thus creating humid air. This humid air can then enter the first chamber 23 through the through-hole 43 on the inner cylinder 4. The air in the first chamber 23 flows back into the drying duct 5 via the return air inlet 22. During this flow, the humid air in the first chamber 23 passes through the condenser plate 6 on the rear end wall 21 of the outer cylinder 2, allowing for large-area contact and heat exchange. This lowers the temperature of the humid air, causing the moisture to condense and dehumidify. After condensation and dehumidification by the condenser plate 6, the humid air becomes low-temperature, dry air. This low-temperature, dry air can then re-enter the drying duct 5 through the return air inlet 22 and be reheated, thus achieving a drying cycle in the drying equipment. Multiple cycles are required to dry the clothes.

[0145] Alternatively, the condenser plate 6 may be made of metal.

[0146] 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.

[0147] Of course, the condenser plate 6 can also be made of other materials with high thermal conductivity.

[0148] Optionally, the structure and curvature of the condenser plate 6 and the rear end wall 21 of the outer cylinder 2 can be kept consistent, so that the condenser plate 6 occupies less space inside the outer cylinder 2.

[0149] In addition, such as Figure 6 As shown, the drying equipment is also equipped with a cooling mechanism 7 to cool down the condenser plate 6. In this way, the condenser plate 6 exchanges heat with the humid air to dehumidify it. The temperature of the condenser plate 6 rises, and the cooling mechanism 7 exchanges heat with it to cool it down, so that the condenser plate 6 always maintains a large temperature difference with the humid air, so as to continuously and efficiently exchange heat with the humid air and dehumidify it. That is, the condenser plate 6 acts as a transfer channel to exchange heat between the humid air and the cooling mechanism 7, thereby realizing the condensation and dehumidification of the humid air.

[0150] Please refer to the above. Figures 6 to 9 , Figure 6 A three-dimensional structural diagram of the outer cylinder is provided, showing the specific structure of the return air inlet; Figure 7 A schematic diagram of the outer cylinder is provided; it shows a specific structural schematic diagram of the condenser plate installed on the rear end wall of the cylinder. Figure 8 A cross-sectional schematic diagram of a condenser plate is provided, showing the shape of the pipe and the closed cavity formed between the condenser plate and the rear end wall. Figure 9 A front view of a condenser pan from one direction is provided, showing the various components of the piping and the overall layout.

[0151] like Figure 7 As shown, the condenser plate 6 can be approximately a semi-circular annular plate structure, connected to the rear end wall 21 of the outer cylinder 2, and located in the upper half of the rear end wall 21 of the outer cylinder 2; in other embodiments, the condenser plate 6 can also be approximately a circular annular plate structure, or have a notch of a certain size on the basis of a approximately circular annular plate structure; in the case of having a notch, the notch is located in the lower part of the condenser plate 6.

[0152] It should be noted that the semi-circular annular plate structure referred to in the embodiments of this application has two meanings. First, the condenser plate 6 is not necessarily a planar structure, but a curved surface adapted to the rear end wall 21 of the outer cylinder 2. However, the vertical projection of the condenser plate 6 on the plane perpendicular to the first direction is a semi-circular ring. Second, the angle corresponding to the semi-circular ring of the condenser plate 6 is not necessarily 180°. It can fluctuate within a certain range above and below 180° (such as 180°±10°). It can also be understood as a ring with a notch of a certain size.

[0153] like Figure 7 and Figure 8As shown, the condenser plate 6 is provided with pipes, and the pipes are filled with a heat transfer medium. The heat transfer medium is a material with high thermal conductivity, at least higher than the thermal conductivity of the condenser plate 6 itself. For example, the heat transfer medium can be heat transfer oil, fluoride, salt solution, etc. In this embodiment, a gas-liquid mixed fluoride is used as an example for illustration.

[0154] Specifically, liquid fluoride is filled into the pipeline as a heat transfer medium, and under ambient temperature, it partially vaporizes. During the condensation and dehumidification of humid air, it absorbs heat from the humid air and rapidly vaporizes, achieving efficient heat exchange with the humid air. On the other hand, the condenser plate 6 also exchanges heat with the cooling mechanism 7, absorbing heat from the heat transfer medium through the coolant in the cooling mechanism 7, causing the gaseous fluoride to liquefy. In this way, the heat transfer medium is maintained in a gas-liquid mixed state, achieving efficient dehumidification of the humid air.

[0155] like Figure 7 and Figure 9 As shown, the pipeline includes a first main line 61 and a branch line 63 that are connected. The first main line 61 has two opposite ends, namely end a and end b, in its own extension direction. In the top and bottom direction of the box 1, end a is higher than end b. The branch line 63 has two opposite ends, namely end c and end d, in its own extension direction. In the top and bottom direction of the box 1, end c is higher than end d.

[0156] The c end of branch 63 is connected to the position between the a end and the b end of the first main road 61. Branch 63 and the first main road 61 form a bifurcation angle with the opening facing the bottom wall of the box 1. The bifurcation angle is an acute angle.

[0157] The opening direction of the bifurcation angle is: the extension direction of the bisector of the bifurcation angle; the above extension direction has a component towards the bottom of the box 1 in the top-bottom direction of the box 1, which can also be simply understood as the extension direction of the bisector of the bifurcation angle, which is vertically downward or diagonally downward.

[0158] During the drying process of the clothes drying equipment, the drying air duct 5 forms a high-temperature airflow that blows into the drying chamber 41 and comes into contact with the wet clothes in the drying chamber 41. This causes the moisture in the wet clothes to evaporate and be carried away by the high-temperature airflow, forming hot and humid air that is discharged from the through hole 43 into the first chamber 23. The hot and humid air flows towards the return air vent 22 in the first chamber 23. The condenser plate 6 is located on the path of the hot and humid air flowing to the return air vent 22. The hot and humid air exchanges heat with the condenser plate 6, condensing and dehumidifying the hot and humid air.

[0159] At the same time, after the temperature of the condenser plate 6 rises, it exchanges heat with the coolant (cooling mechanism 7) to cool down the condenser plate 6, thus completing the condensation and dehumidification of the humid air by the coolant. The spacing of the condenser plate 6 avoids direct contact between the humid air and the coolant, preventing the air from being humidified again by the coolant after cooling.

[0160] In this embodiment, a pipe is provided on the condenser plate 6 and a heat exchange medium is filled in the pipe. The efficiency of heat exchange between the condenser plate 6 and the humid air and the coolant is significantly improved, that is, the efficiency of condensing and dehumidifying the humid air is improved. After the humid air is dehumidified, it contains less moisture, and the subsequent drying efficiency of clothes is higher, and the drying equipment has a better drying effect on clothes.

[0161] In addition, the bifurcation angle formed by branch 63 and the first main line 61 is set to an acute angle to increase the flow resistance of the heat exchange medium in the pipeline, improve the circulation efficiency of the heat exchange medium, and further improve the heat exchange efficiency of the condenser plate 6.

[0162] Specifically, during the condensation and dehumidification process of hot and humid air, the heat exchange medium continuously undergoes liquid-gas and gas-liquid changes, and the heat exchange medium as a whole is maintained in a gas-liquid mixed state.

[0163] When a liquid-to-gas change occurs: the gaseous heat exchange medium rises along the pipeline, and part of the original liquid heat exchange medium is located at the bottom of the first main pipeline 61. After vaporization, it rises along the first main pipeline 61; another part of the original liquid heat exchange medium is located at the bottom of the branch pipeline 63. After vaporization, it rises along the branch pipeline 63 and flows into the gaseous heat exchange medium in the first main pipeline 61 when it intersects with the first main pipeline 61.

[0164] When a gas-to-liquid change occurs: the liquid heat exchange medium falls along the pipeline. The original gaseous heat exchange medium is located at the top of the first main pipeline 61. After it is converted to liquid, the liquid heat exchange medium falls along the first main pipeline 61. When it falls to the intersection of the branch pipeline 63 and the first main pipeline 61, part of the liquid heat exchange medium continues to fall along the first main pipeline 61, while another part of the liquid heat exchange medium is diverted to the branch pipeline 63 and falls along the branch pipeline 63.

[0165] As described above, during the transmission of the heat exchange medium along the pipeline, it will converge or diverge at the intersection of branch 63 and the first main line 61. When the fluid diverges or converges, the angle between the flow direction of the diverging or merging fluid and the original fluid is acute. The flow direction of the fluid after divergence or convergence has a component in the original flow direction, reducing energy loss, that is, reducing the flow resistance of the heat exchange medium in the pipeline and improving the circulation efficiency of the heat exchange medium.

[0166] Compared to cases where the bifurcation angle is a right angle or an obtuse angle, reducing the resistance of fluid diversion and convergence at the intersection of branch 63 and the first main line 61 improves the circulation efficiency of the heat transfer medium in the pipeline, which can further improve the heat exchange efficiency of the condenser plate 6, resulting in better condensation and dehumidification of humid air and higher drying efficiency of clothes drying equipment.

[0167] Taking the convergence of the gaseous heat exchange medium at the intersection of branch 63 and the first main line 61 as an example: the gaseous heat exchange medium rises in branch 63 and flows into the first main line 61. The gaseous heat exchange medium has a component in the direction of its ascent along branch 63 that extends upward along the first main line 61. After the convergence, this component is still retained. If the bifurcation angle is a right angle or an obtuse angle, this component will be completely lost during the convergence process.

[0168] Taking the diversion of liquid heat transfer medium at the intersection of branch 63 and the first main line 61 as an example: part of the liquid heat transfer medium in the first main line 61 is diverted to branch 63. The liquid heat transfer medium diverted to branch 63 still retains part of the velocity of the liquid heat transfer medium in the first main line 61. If the bifurcation angle is a right angle or an obtuse angle, the velocity of the liquid heat transfer medium in the first main line 61 will be completely lost after diverting to branch 63.

[0169] As can be seen from the above, setting the bifurcation angle formed by branch 63 and the first main line 61 to an acute angle can significantly reduce the resistance of the heat transfer medium during its flow in the pipeline, especially at the junction of branch 63 and the first main line 61, thereby improving the circulation efficiency of the heat transfer medium in the pipeline and further enhancing the heat exchange efficiency of the condenser plate 6.

[0170] like Figure 9 As shown, the bifurcation angle formed by the first trunk road 61 and the branch road 63 is α, where the bifurcation angle α satisfies: 35°<α<55°.

[0171] By limiting the size of the bifurcation angle to the above range, it is possible to ensure that the coverage area of ​​the first main road 61 and the branch road 63 is large enough, while reducing the resistance of the heat transfer medium to flow at the intersection of the branch road 63 and the first main road 61, thereby increasing the coverage area of ​​the heat transfer medium on the condenser plate 6 and the circulation efficiency in the pipeline, and thus improving the heat exchange efficiency of the condenser plate 6.

[0172] Specifically, if the bifurcation angle does not exceed 35°, it indicates that branch 63 is too close to the first main branch 61. The smaller the bifurcation angle, the closer branch 63 is to the first main branch 61. In this case, with a fixed number of branches 63, the area covered on the condenser plate 6 will be small, resulting in limited improvement in the heat exchange efficiency of the condenser plate 6. To meet the requirement of the area covered by the pipes on the condenser plate 6, more branches 63 need to be set up. On the one hand, this increases the processing difficulty of the condenser plate and has an adverse effect on the structural strength of the condenser plate 6. On the other hand, it will result in an excessively high density of branches 63 on the condenser plate 6, which is wasteful.

[0173] In addition, if the bifurcation angle reaches 55° or more, it indicates that the first main line 61 and the branch line 63 are too divergent, which will cause the resistance of the heat transfer medium to increase when it splits or merges at the intersection of the branch line 63 and the first main line 61, affecting the circulation efficiency of the heat transfer medium in the pipeline, resulting in a decrease in the heat exchange efficiency of the condenser plate 6 and the drying efficiency of the clothes dryer.

[0174] like Figure 7 and Figure 9 As shown, in this embodiment, there are multiple first trunk lines 61, and each first trunk line 61 is connected to multiple branch lines 63, which can maximize the coverage area of ​​the pipeline (heat transfer medium) on the condenser plate 6. The larger the coverage area, the more significant the effect on improving the heat exchange efficiency of the condenser plate 6.

[0175] Of course, in other embodiments, a first trunk road 61 and a branch road 63 may also be provided, or a first trunk road 61 and multiple branch roads 63 may be provided.

[0176] The first main road 61 has a first side and a second side arranged opposite to each other along a first direction, and a plurality of branch roads 63 connected to the first main road 61 are distributed on the first side and the second side; wherein, the first direction is perpendicular to the front-back direction of the housing 1 and perpendicular to the extension direction of the first main road 61.

[0177] Branch roads 63 are evenly distributed on both sides of the first trunk road 61, similar to the veins of a plant leaf, which helps to improve the uniformity of heat exchange medium distribution in the first trunk road 61 and the branch roads 63 connected to it.

[0178] Furthermore, the connection points between the multiple branch roads 63 located on the first side and the first trunk road 61 are the first connection points, and the connection points between the multiple branch roads 63 located on the second side and the first trunk road 61 are the second connection points; in the extension direction of the first trunk road 61, the first connection points and the second connection points are arranged alternately.

[0179] For example, both the first side and the second side are distributed with multiple branch roads 63. In the extension direction of the first main road 61, the spacing between any two adjacent branch roads 63 is the same. The first connection point is located in the middle of two adjacent second connection points, and the second connection point is located in the middle of two adjacent first connection points.

[0180] Of course, it should be noted that for the first or second connection point at the end of the first trunk road 61 in the extension direction, there are no other second or first connection points outside it. Therefore, for the first or second connection point at the end, it is only necessary to ensure that the second connection point adjacent to it on the inside is located between two adjacent first connection points, or that the first connection point adjacent to it on the inside is located between two adjacent second connection points.

[0181] The above settings can improve the uniformity of the heat exchange medium flow from the first main path 61 to the first side branch 63 and the second side branch 63, which helps to ensure the uniformity of heat exchange efficiency between each position of the cold condenser plate 6 and the outside, resulting in better overall heat exchange effect and better condensation and dehumidification effect on humid and hot air.

[0182] If the first connection point and the second connection point coincide, for the first main road 61 that does not extend along the top and bottom direction of the housing 1, that is, the first main road 61 does not extend in the vertical direction, taking the first side and the second side as an example, where the first side is located diagonally below the first main road 61 and the second side is located diagonally above the first main road 61; during the process of the heat transfer medium being diverted from the first main road 61 to the branch road 63, at the point where the first connection point and the second connection point coincide, since the first side is located diagonally below and the second side is located diagonally above, the heat transfer medium will tend to divert to the branch road 63 on the first side, resulting in uneven distribution of the heat transfer medium.

[0183] In this embodiment, the first connection point and the second connection point are arranged alternately, so that the branch 63 on the second side avoids the branch 63 on the first side. In this way, the flow of heat exchange medium from the second connection point to the branch 63 on the second side is reduced. Due to the influence of the branch 63 on the first side, the uniformity of flow to the branches 63 on both sides is improved, and the heat exchange effect between the condenser plate 6 and the outside is better.

[0184] like Figure 6 , Figure 7 and Figure 9 As shown, the outer cylinder 2 has a mounting hole 24 on its rear end wall 21 for the rotating shaft 42 to pass through; the condenser plate 6 has an outer edge and an inner edge, wherein the outer edge is the edge of the condenser plate 6 near the outer peripheral wall of the outer cylinder 2, and the inner edge is the edge of the condenser plate 6 near the mounting hole 24.

[0185] The pipeline also includes an outer side passage 64 and an inner side passage 65. The outer side passage 64 extends circumferentially along the outer peripheral wall of the outer cylinder 2 and is disposed on the outer edge of the condenser plate 6. The inner side passage 65 extends circumferentially along the mounting hole 24 and is disposed on the inner edge of the condenser plate 6.

[0186] The outer side road 64 is connected to end a of the first main road 61, and the inner side road 65 is connected to at least one of the ends b of the first main road 61 and the end d of the branch road 63.

[0187] For example, the b end of the first trunk road 61 is connected to the inner side road 65, and the d end of a portion of the branch road 63 is connected to the inner side road 65.

[0188] By setting the outer side path 64 and the inner side path 65, the heat transfer medium can also flow through the pipes at the edge of the condenser plate 6, so that each area of ​​the condenser plate 6 has a high heat exchange efficiency, reducing the problem that the pipes cannot cover the edge of the condenser plate 6, resulting in a low heat exchange efficiency in the edge area of ​​the condenser plate 6.

[0189] On the other hand, multiple primary trunk lines 61 are connected to the outer side line 64 and the inner side line 65, so that the heat transfer medium can also circulate among the multiple primary trunk lines 61. The entire pipeline forms a circulation path, and the heat transfer medium circulates on the condenser plate 6, which improves the effect of condensing and dehumidifying the hot and humid air.

[0190] Especially when the load of heat exchange between a certain area of ​​the condenser plate 6 and the humid air is large, the heat transfer medium circulates throughout the entire area of ​​the condenser plate 6, which can significantly alleviate the large heat exchange load in a certain area.

[0191] Without the outer side path 64 and the inner side path 65, the heat exchange medium can only circulate in the first main path 61 and the corresponding branch path 63. If the heat exchange load in a certain area of ​​the condenser plate 6 is large, it is difficult to support the area with the large heat exchange load. However, by setting the heat exchange medium to circulate in multiple first main paths 61 and branch paths 63, the situation of a large heat exchange load in a certain area can be significantly alleviated.

[0192] Furthermore, such as Figure 9 As shown, the condenser plate 6 extends circumferentially around the mounting hole 24. In the extension direction of the condenser plate 6, the condenser plate 6 has a first end and a second end that are disposed opposite to each other. The pipes disposed on the condenser plate 6 also include a first connecting side 66 and a second connecting side 67. The first connecting side 66 is located at the first end of the condenser plate 6 and connects between the outer side 64 and the inner side 65. The second connecting side 67 is located at the second end of the condenser plate 6 and connects between the outer side 64 and the inner side 65.

[0193] The outer side path 64, inner side path 65, first connecting side path 66, and second connecting side path 67 form a ring structure. The ring structure surrounds the edge of the condenser plate 6, covering as much area as possible on the condenser plate 6. The first main path 61 and branch path 63 are distributed inside the ring structure, so that all parts and branches of the pipeline are interconnected, forming more pathways for the heat transfer medium to circulate, making the circulation efficiency of the heat transfer medium in the pipeline higher, and improving the heat exchange efficiency of the heat transfer medium on the condenser plate 6 better.

[0194] In this embodiment, the condenser plate 6 is approximately semi-circular, and two connecting paths 66 are arranged along the radial edge of the condenser plate 6, such that the outer path 64, the inner path 65, the first connecting path 66, and the second connecting path 67 encircle the edge of the condenser plate 6.

[0195] In other embodiments, the condenser plate 6 is generally annular. In this case, a connecting side path 66 may be provided to extend radially along the condenser plate 6, connecting the outer side path 64 and the inner side path 65.

[0196] like Figure 7 and Figure 9 As shown, the pipeline also includes a second trunk line 62, which connects the outer side road 64 and the inner side road 65; the d-end of a portion of the branch road 63 is connected to the second trunk line 62. Exemplarily, there are multiple first trunk lines 61, and the second trunk line 62 is located between two adjacent first trunk lines 61. The second trunk line 61 is connected to an adjacent first trunk line 61 via at least a portion of the branch road 63 connected to the first trunk line 61.

[0197] By setting up the second trunk road 62, more pathways are formed between the outer side road 64 and the inner side road 65, which can further improve the circulation efficiency of the heat transfer medium in the pipeline.

[0198] Specifically, the first trunk road 61 and the branch road 63 connected to the first trunk road 61 form group X, and the second trunk road 62 and the branch road 63 connected to the second trunk road 62 form group Y. Adjacent groups X and Y share at least some of the branch roads 63. The extension directions of the first trunk road 61 and the second trunk road 62 are roughly the same, making the overall structure of group Y similar to that of group X, and groups X and Y are inverted structures. It should be noted that they are not strictly inverted, and the dimensions and angles of the corresponding first trunk road 61, second trunk road 62, and branch road 63 may have certain differences.

[0199] The X group, formed by the first main channel 61 and branch channel 63, reduces the resistance to flow of the heat exchange medium during the transformation between liquid and gaseous states, making the diversion and merging processes smoother. The Y group has a similar overall structure to the X group and can also improve the smoothness of the flow of the heat exchange medium in the pipeline during the state change process.

[0200] Setting up group Y and group X in reverse order allows them to complement each other. Specifically, during the process of the heat exchange medium changing from a liquid to a gaseous state: in group X, the gaseous heat exchange medium flows from branch 63 to the first main line 61, while in group Y, the gaseous heat exchange medium flows from the second main line 62 to branch 63. During the process of the heat exchange medium changing from a gaseous to a liquid state: in group X, the liquid heat exchange medium flows from the first main line 61 to branch 63; while in group Y, the liquid heat exchange medium flows from branch 63 to the second main line 62.

[0201] That is, during the process of the heat exchange medium changing from liquid to gas and from gas to liquid, there are both splitting and merging processes, which makes the circulation process of the heat exchange medium inside the pipeline more uniform, so that the heat exchange efficiency of each area on the condenser plate 6 remains the same or nearly the same, and the dehumidification effect on humid and hot air is better.

[0202] Thus, the second trunk line 62 creates more channels for the heat exchange medium to circulate, and it can complement the first trunk line 61, ensuring the uniformity of the heat exchange medium distribution and flow during the process of the heat exchange medium changing from liquid to gas and from gas to liquid.

[0203] In addition, in actual use, taking the installation of the condenser plate 6 on the rear end wall 21 using bolts as an example, corresponding connection holes 68 need to be set at corresponding positions on the condenser plate 6 and the rear end wall 21; and in order to make the improved condenser plate 6 in this embodiment compatible with the original clothes drying equipment, it is necessary to keep the connection holes 68 on the condenser plate 6 compatible with the connection holes on the rear end wall 21.

[0204] Furthermore, the condenser plate 6 is also provided with an exhaust port 69 corresponding to the return air port 22, serving as a channel for air to reach the return air port 22; when installing pipes on the condenser plate 6, it is necessary to avoid the aforementioned connection hole 68 and exhaust port 69.

[0205] However, designing the piping layout for each connection hole 68 and exhaust vent 69 would greatly increase the design complexity. Therefore, the piping layout was designed with the assumption that no connection holes 68 and exhaust vents 69 were provided on the condenser plate 6. The piping layout was then adjusted locally based on the positions of the connection holes 68 and exhaust vents 68.

[0206] In this embodiment, a clearance area is provided on the condenser plate 6, and at least one of the connection hole 68 and the exhaust port 69 is located in the clearance area; it can also be understood that a part of the pipes provided on the condenser plate 6 will interfere with the connection hole 68 or the exhaust port 69. The part of the pipes is removed or the path is adjusted to avoid the corresponding connection hole 68 or exhaust port 69, thus forming the aforementioned clearance area.

[0207] To address this, a supplementary section 8 is also provided on the condenser plate 6. The supplementary section 8 is distributed within the aforementioned avoidance area and is connected to the pipeline.

[0208] In this way, without affecting the overall layout of the pipeline, the setting of the connection hole 68 and the exhaust port 69 can be maintained, and the area covered by the heat transfer medium can be further increased to improve the heat exchange efficiency.

[0209] For example, in order to ensure the stability of the connection between the condenser plate 6 and the rear end wall 21, connection holes 68 are generally provided at the corners of the condenser plate 6 to reduce the problem of the condenser plate 6 not being firmly connected to the rear end wall 21.

[0210] Taking the case where the condenser plate 6 is roughly in the shape of a semi-circular ring as an example, connection holes 68 are provided at both ends of the radial edges of the first and second ends of the condenser plate 6. The first connection path 66 and the second connection path 67 are separated from the radial edges of the condenser plate 6 by a certain gap to avoid the connection holes 68. The supplementary section 8 is located within the above-mentioned gap to increase the coverage area of ​​the heat transfer medium and improve the heat exchange efficiency of the condenser plate 6.

[0211] For example, the exhaust vent 69 is distributed in an irregular area on the condenser plate 6, including multiple independent through holes; the first main road 61, the second main road 62, and the branch road 63 originally located in the irregular area are removed, and then a supplementary section 8 connected to the pipeline is set. The supplementary section 8 is located between the pipeline and the irregular area where the exhaust vent 69 is located. Alternatively, the supplementary section 8 can be set to extend through the gap between the multiple independent through holes.

[0212] Please refer to the above. Figures 6 to 10 , Figure 6 A three-dimensional structural diagram of the outer cylinder is provided, showing the specific structures of the liquid inlet and air return outlet. Figure 7 A schematic diagram of the outer cylinder and the condenser plate is provided; it shows a structural schematic diagram of the condenser plate being installed on the rear end wall of the outer cylinder. Figure 8 A cross-sectional schematic diagram of a condenser plate is provided, showing the arrangement of pipes on the condenser plate and the specific structure of the condenser plate. Figure 9 A front view of a condenser pan from one direction is provided, showing the various components of the piping and the overall layout. Figure 10A front view of a condenser plate is provided, showing the relative position of the first trunk line to a reference plane.

[0213] like Figure 10 As shown, the plane perpendicular to the left and right direction of the housing 1 and passing through the rotation axis of the rotation shaft 42 is taken as the reference plane, where the rotation axis of the rotation shaft 42 is the rotation axis of the inner cylinder 4. The minimum distance between end a of the first main path 61 and the reference plane is D1, and the minimum distance between end b of the first main path 61 and the reference plane is D2. There are multiple first main paths 61, and at least a portion of them satisfy: D1≤D2.

[0214] Thus, the first trunk line 61 forms a structure in which the upper end (end a) is close to the top of the condenser plate 6 in the middle region, and the lower end (end b) diffuses away from the middle region. The middle region is the position area corresponding to the aforementioned reference surface.

[0215] In the process of condensing and dehumidifying the humid air in the condenser plate 6, the liquid heat exchange medium absorbs heat from the humid air and vaporizes, thereby reducing the temperature of the humid air and achieving the purpose of dehumidification. After the gaseous heat exchange medium exchanges heat with the cooling mechanism 7 and liquefies, it then dehumidifies the humid air.

[0216] If D1 > D2, the lower end of the first main path 61 will be closer to the middle area of ​​the condenser plate 6, while the upper end will be dispersed away from the middle area, where the middle area is the area where the reference plane is located. This results in the lower end of the first main path 61 covering a smaller area than the upper end. Since the liquid heat exchange medium is located in the lower part of the first main path 61, it mainly plays the role of absorbing heat from the humid air. The reduction in the coverage area of ​​the lower end of the first main path 61 will lead to a decrease in the efficiency of heat exchange with the humid air.

[0217] In addition, the gaseous heat exchange medium is mainly located at the upper end of the first main circuit 61, where it exchanges heat with the cooling mechanism 7. If the distribution at the upper end of the first main circuit 61 is too dispersed, it is not convenient to use coolant to cool the gaseous heat exchange medium, which will affect the efficiency of condensing and dehumidifying the hot and humid air.

[0218] Therefore, by setting D1≤D2, the distribution area of ​​the first trunk road 61 can be reduced to be larger at the top and smaller at the bottom. On the one hand, it ensures that the coverage area of ​​the heat exchange medium in the liquid state is large enough, that is, the contact area for heat exchange with the humid and hot air is large enough, and the heat exchange efficiency is high. On the other hand, it alleviates the problem of the heat exchange medium in the gaseous state being too dispersed, so that the gaseous heat exchange medium can be cooled more easily by the coolant.

[0219] like Figure 6 and Figure 8As shown, the cooling mechanism 7 includes a closed cavity 71 and a liquid inlet 72. The closed cavity 71 is located between the condenser plate 6 and the rear end wall 21 of the outer cylinder 2, and is formed by the condenser plate 6 and the rear end wall 21. In some other embodiments, the closed cavity 71 may also be formed inside a solid body of other plate-like structures.

[0220] The liquid inlet 72 is provided on the outer cylinder 2 and located at the top of the outer cylinder 2. Specifically, the liquid inlet 72 can be located on the outer peripheral wall of the outer cylinder 2 or on the rear end wall 21. The liquid inlet 72 is connected to the closed cavity 71 and is configured to provide coolant and guide the coolant to spray onto the top of the condenser plate 6.

[0221] In addition, a drain port 25 is provided at the bottom of the outer cylinder 2, which is configured to allow the aforementioned coolant to be discharged from the outer cylinder 2. During actual operation, some condensate formed from the humid and hot air will also be discharged from the drain port 25. Similarly, the drain port 25 can be located on the outer peripheral wall of the outer cylinder 2, or it can be located on the rear end wall 21.

[0222] For example, the liquid inlet 72 and the liquid outlet 25 are connected to the cooling equipment to form a coolant circulation loop. During the drying process of the clothes drying equipment, the coolant continuously cools the condenser plate 6 and the heat exchange medium.

[0223] By setting the liquid inlet 72 at the top of the outer cylinder 2, and the outer cylinder 2 being a cylindrical structure, with the liquid inlet 72 located in the middle of the top of the outer cylinder 2, the coolant flows to the top of the condenser plate 6. The upper end (end a) of the first main circuit 61 is relatively more concentrated at the top of the condenser plate 6. Combined with the position of the liquid inlet 72, the coolant, after entering the closed cavity 71, first contacts the top area of ​​the condenser plate 6 for heat exchange.

[0224] The gaseous heat exchange medium is mainly concentrated at the top of the condenser. Along the top-to-bottom direction of the housing 1, the proportion of the gaseous portion decreases as it moves downwards towards the bottom wall of housing 1, while the proportion of the liquid portion increases. Thus, the coolant first exchanges heat with the gaseous heat exchange medium, which contains the highest amount of heat, ensuring efficient cooling of the gaseous medium by the coolant. As it extends towards the bottom wall of housing 1, the heat content of the heat exchange medium decreases, and the cooling capacity of the coolant gradually decreases, allowing for full utilization of the coolant, improving its utilization rate, and enhancing the cooling efficiency of the heat exchange medium.

[0225] The surface of the condenser plate 6 facing the rear end wall 21 of the outer cylinder 2 is defined as the first surface, and the surface of the condenser plate 6 facing the inner cylinder 4 is defined as the second surface; for example... Figure 8As shown, in the thickness direction of the condenser plate 6, the pipe protrudes from at least one of the first surface and the second surface.

[0226] In this embodiment, the pipe protrudes from the first surface and the second surface in the thickness direction of the condenser plate 6, that is, the pipe protrudes from the body structure of the condenser plate 6 on the first surface and the second surface, and protrusions are formed on the corresponding surfaces.

[0227] The thickness direction of the condenser plate 6 refers to the dimension of the condenser plate 6 in the front-rear direction of the housing 1, which can also be understood as the dimension in the direction of the arrangement of the first and second surfaces. However, it should be noted that the above thickness direction is based on the case where the first and second surfaces of the condenser plate 6 are planes. In some embodiments, the rear end wall 21 of the outer cylinder 2 is not a plane, and the corresponding first and second surfaces of the condenser plate 6 are also not planes. In this case, the thickness direction of the condenser plate 6 is determined based on the inclination direction of the first and second surfaces.

[0228] This increases the contact area between the condenser plate 6 and the outside, resulting in higher heat exchange efficiency with both humid air and coolant, and greater efficiency in condensing and dehumidifying humid air. In addition, it increases the cross-sectional area of ​​the pipes, allowing for a larger amount of heat exchange medium to be filled inside, which further enhances the heat exchange efficiency of the condenser plate 6.

[0229] Furthermore, it should be noted that during the condensation and dehumidification process of hot and humid air, the heat transfer medium changes between liquid and gaseous states. It circulates not only vertically along the pipes, but also, simultaneously, exhibits a certain degree of gas-liquid circulation along the thickness of the condensation pan 6. For ease of explanation, in this embodiment, the flow of the liquid and gaseous heat transfer medium in the top and bottom direction of the housing 1 is referred to as the large circulation, and the flow along the thickness of the condensation pan 6 is referred to as the small circulation.

[0230] Specifically, the first surface of the condenser plate 6 is in contact with the coolant, and the second surface is in contact with the humid and hot air. Therefore, inside the pipe, the heat transfer medium changes from a gaseous state to a liquid state on the side closer to the first surface, and from a liquid state to a gaseous state on the side closer to the second surface. During the process of the heat transfer medium changing between the liquid and gaseous states, a small circulation is also generated inside the pipe along the thickness direction of the condenser plate.

[0231] Increasing the cross-sectional area of ​​the pipes provides sufficient space for the aforementioned small-scale circulation process, allowing the liquid and gaseous heat transfer fluids to circulate more efficiently along the thickness of the condenser pan 6. This further enhances the heat exchange efficiency of the condenser pan 6, resulting in better dehumidification of humid air. Conversely, if the pipe cross-sectional area is too small, the small-scale circulation process may be hindered, negatively impacting the heat exchange efficiency of the condenser pan 6.

[0232] In some other embodiments, the pipe protrudes from the first surface on the side of the condenser plate 6 facing the rear end wall 21, forming a protrusion on the first surface, while on the second surface of the condenser plate 6 facing the inner cylinder 4, there is no protrusion corresponding to the first surface.

[0233] Alternatively, it can be configured such that on the side of the condenser plate 6 facing the inner cylinder 4, the pipe protrudes from the second surface, forming a protrusion on the second surface, while on the first surface of the condenser plate 6 facing the rear end wall 21, there is no protrusion corresponding to the second surface.

[0234] Alternatively, it can be configured such that on the side of the condenser plate 6 facing the rear end wall 21, some pipes protrude from the first surface to form a protrusion, while some pipes do not protrude from the second surface; on the side of the condenser plate 6 facing the inner cylinder 4, some pipes protrude from the second surface to form a protrusion, while some pipes do not protrude from the second surface. The portion of pipes protruding from the first surface and the portion of pipes protruding from the second surface can be the same portion of pipes or different portions of pipes.

[0235] Specifically, such as Figure 8 As shown, the condenser plate 6 is formed by combining two separate plates. The separate plates are provided with groove structures extending along a specific path. The two separate plates are fastened together and fixed. The corresponding groove structures are combined to form a cavity that is closed to the outside, which forms the pipeline on the condenser plate 6.

[0236] The split plate forms a corresponding groove structure by blowing, which makes the sidewall of the formed pipeline, especially the sidewall of the protrusion formed by the first surface and the second surface, thinner and the heat exchange efficiency higher.

[0237] The embodiments of this disclosure also provide a clothes drying device. The main difference between the clothes drying device of this embodiment and the clothes drying device of the embodiments described above is that: Figure 9 As shown, the pipes installed on the condenser plate 6 include multiple main pipes and branch pipes 63 connected to the main pipes. The main pipes have two ends that are arranged opposite to each other in the direction of extension of the main pipes, namely end a and end b. In the top-bottom direction of the housing 1, end a is higher than end b. The branch pipes 63 have two ends that are arranged opposite to each other in the direction of extension of the branch pipes 63, namely end c and end d. In the top-bottom direction of the housing 1, end c is higher than end d.

[0238] Part of the main road connects to end c of branch road 63, and part of the main road connects to end d of branch road 63. The minimum included angle between branch road 63 and the main road is an acute angle.

[0239] In this embodiment, the main road and branch road 63 are connected at their respective ends (c and d). Specifically, for a branch road 63 connected to the main road, the extension from one end connected to the main road towards the end furthest from the main road can be towards the top wall of the housing 1 or towards the bottom wall of the housing 1. The resulting minimum included angle can be towards the top wall of the housing 1 (upwards) or towards the bottom wall of the housing 1 (downwards).

[0240] In this embodiment, the main path includes the first main path 61 and the second main path 62 in the previous embodiment. Thus, combined with the branch path 63 connected to the main path, multiple flow paths are formed on the condenser plate 6. The first main path 61 and the connected branch path 63 form group X, and the second main path 62 and the connected branch path 63 form group Y. Group X and group Y have similar structures and are reversed. This makes the flow path of the heat exchange medium in the pipeline symmetrical during the process of changing from liquid to gas and from gas to liquid.

[0241] The aforementioned symmetry specifically refers to the following: when the heat exchange medium changes from a liquid state to a gaseous state, the gaseous heat exchange medium flows from the first main line 61 in branch 63 and flows from the second main line 62 to branch 63; when the heat exchange medium changes from a gaseous state to a liquid state, the liquid heat exchange medium flows from the second main line 62 in branch 63 and flows from the first main line 61 to branch 63.

[0242] In the case where only the first main line 61 is set: when the heat exchange medium changes from liquid to gas, the gaseous heat exchange medium flows from branch line 63 to the first main line 61; when the heat exchange medium changes from gas to liquid, the liquid heat exchange medium flows from the first main line 61 to branch line 63.

[0243] Therefore, in this embodiment, by connecting the main road and the branch road 63, more channels are formed for the flow of the heat exchange medium, which can improve the uniformity of the flow and distribution of the heat exchange medium in the pipeline during the process of changing the heat exchange medium from liquid to gas and from gas to liquid. The condensation and dehumidification effect of each part of the condenser plate 6 on the humid air is also more uniform, reducing the problem of incomplete dehumidification of some humid air and improving the utilization efficiency of the condenser plate 6 and the heat exchange medium.

[0244] The embodiments of this disclosure also provide a clothes drying device. The main difference between the clothes drying device of this embodiment and the clothes drying device of the embodiments described above is that: Figure 10 As shown, the pipeline includes a main line and a branch line 63 connected to the main line. The main line has an a end and a b end that are arranged opposite to each other along the extension direction of the main line. In the top and bottom direction of the box 1, the position of the a end is higher than the position of the b end.

[0245] The plane perpendicular to the left and right direction of the box body 1 and passing through the rotation axis of the rotation axis 42 is taken as the reference plane; the minimum distance between end a of the main road and the reference plane is D1, and the minimum distance between end b of the main road and the reference plane is D2. D1 and D2 satisfy: D1≤D2.

[0246] It should be noted that when the number of trunk roads is set to multiple, some of the trunk roads can be configured to satisfy D1≤D2.

[0247] If D1 > D2, it indicates that the upper end of the main path disperses away from the reference plane, while the lower end of the main path moves closer to the reference plane. The liquid heat exchange medium is mainly located in the lower part of the main path. The lower end of the main path moves closer to the middle, which reduces the area covered by the liquid heat exchange medium and decreases the efficiency of heat exchange with the hot and humid air. This results in a decrease in the efficiency of condensing and dehumidifying the hot and humid air and drying clothes.

[0248] In addition, the gaseous heat exchange medium is mainly located in the upper part of the main circuit, and it disperses to the sides, resulting in the gaseous heat exchange medium being dispersed in a large area. When cooling the gaseous heat exchange medium with coolant, a large area needs to be cooled, which is inconvenient.

[0249] In this embodiment, setting D1≤D2 increases the coverage area at the lower end of the main path, meaning the liquid heat exchange medium covers a larger area, improving its ability to exchange heat with humid air and increasing the efficiency of condensing and dehumidifying the humid air. On the other hand, reducing the coverage area at the upper end of the main path, meaning the distribution area of ​​the gaseous heat exchange medium is reduced, makes it easier to cool the gaseous heat exchange medium with coolant later, resulting in higher efficiency in reliquefying the gaseous heat exchange medium.

[0250] This improves the heat exchange efficiency between the condenser plate 6 and the humid air and coolant, resulting in more efficient dehumidification of the humid air.

[0251] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure, and not to limit them. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this disclosure, and they should all be covered within the scope of the claims and specification of this disclosure. This disclosure is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A clothes drying device, characterized in that, include: Box; An outer cylinder is located inside the housing, and a return air vent is provided on the rear end wall of the outer cylinder; The inner drum is rotatably disposed inside the outer drum, and the inner drum has a drying chamber that can accommodate clothes. The cavity between the inner drum and the outer drum is a first cavity, and the drying chamber is connected to the return air vent through the first cavity. A drying air duct is provided outside the outer cylinder. One end of the drying air duct is connected to the return air inlet, and the other end of the drying air duct is connected to the drying chamber. The drying duct is configured to supply gas for drying clothes into the drying chamber and to draw gas from the first chamber through the return air vent. A condenser plate that is cooled by a cooling mechanism is disposed on the rear end wall of the outer cylinder facing the inner cylinder; The condenser plate is equipped with pipes, and the pipes are filled with heat transfer fluid; The pipeline includes: The first trunk road has two ends, namely end a and end b, which are arranged opposite to each other in the extension direction of the first trunk road. In the top and bottom direction of the box, the position of end a is higher than the position of end b. The branch road connected to the first main road has two ends, namely end c and end d, which are arranged opposite to each other in the extension direction of the branch road. In the top and bottom direction of the box, the position of end c is higher than the position of end d. The c-end is connected to the first main road and is located between the a-end and the b-end, so that the branch road and the first main road form a bifurcation angle with an opening facing the bottom wall of the box, and the bifurcation angle is an acute angle.

2. The clothes drying equipment according to claim 1, characterized in that, The bifurcation angle is α; Wherein, α satisfies: 35°<α<55°.

3. The clothes drying equipment according to claim 1, characterized in that, The first trunk road is provided with a first side and a second side that are arranged opposite to each other along a first direction; The number of branches is multiple, and the multiple branches are distributed on the first side and the second side; The connection point between the first main road and the branch road located on the first side is the first connection point, and the connection point between the first main road and the branch road located on the second side is the second connection point; In the extension direction of the first trunk road, the first connection point and the second connection point are arranged alternately; Wherein, the first direction is perpendicular to the front-rear direction of the box body and perpendicular to the extension direction of the first main road.

4. The clothes drying equipment according to claim 1, characterized in that, The outer cylinder has a mounting hole on its rear end wall for the inner cylinder's rotation shaft to pass through. The condensation plate has an outer edge and an inner edge; The outer edge is the edge of the condensation plate near the outer peripheral wall of the outer cylinder; The inner edge is the edge of the condensation plate near the mounting hole; The pipeline also includes: The outer edge path extends circumferentially along the outer peripheral wall of the outer cylinder and is provided at the outer edge; The inner side path extends circumferentially along the mounting hole and is disposed on the inner side edge; The outer side road is connected to end a of the first main road, and the inner side road is connected to at least one of end b of the first main road and end d of the branch road.

5. The clothes drying equipment according to claim 4, characterized in that, The pipeline also includes a second trunk line, which connects the outer side road and the inner side road; There are multiple branch roads, and the d-end of some of the branch roads is connected to the second trunk road.

6. The clothes drying equipment according to claim 4, characterized in that, The condensation plate extends circumferentially around the mounting hole; In the extending direction of the condenser, the condenser has a first end and a second end that are disposed opposite to each other; The pipeline also includes: The first connecting side is located at the first end, and the first connecting side connects the outer side and the inner side; The second connecting side is located at the second end, and the second connecting side connects the outer side and the inner side; The d-end of the branch is connected to at least one of the outer side road, the inner side road, the first connecting side road, and the second connecting side road.

7. The clothes drying apparatus according to any one of claims 1-6, characterized in that, The plane perpendicular to the left and right direction of the box and passing through the rotation axis of the inner cylinder is used as the reference plane; The minimum distance between end a of the first trunk road and the reference plane is D1, and the minimum distance between end b of the first trunk road and the reference plane is D2. There are multiple first trunk roads, and at least some of the first trunk roads satisfy: D1≤D2; The cooling mechanism includes a liquid inlet disposed inside the outer cylinder; The inlet is configured to provide coolant and direct the coolant towards the top of the condenser plate; The bottom of the outer cylinder is provided with a drain port; The drain port is configured to allow the coolant to drain from the outer cylinder.

8. The clothes drying equipment according to claim 1, characterized in that, The surface of the condenser plate facing the rear end wall of the outer cylinder is the first surface, and the surface of the condenser plate facing the inner cylinder is the second surface; In the thickness direction of the condenser plate, the conduit protrudes from at least one of the first surface and the second surface.

9. A clothes drying device, characterized in that, include: Box; An outer cylinder is located inside the housing, and a return air vent is provided on the rear end wall of the outer cylinder; The inner drum is rotatably disposed inside the outer drum, and the inner drum has a drying chamber that can accommodate clothes. The cavity between the inner drum and the outer drum is a first cavity, and the drying chamber is connected to the return air vent through the first cavity. A drying air duct is provided outside the outer cylinder. One end of the drying air duct is connected to the return air inlet, and the other end of the drying air duct is connected to the drying chamber. The drying duct is configured to supply gas for drying clothes into the drying chamber and to extract gas from the first chamber through the return air vent. A condenser plate that is cooled by a cooling mechanism is disposed on the rear end wall of the outer cylinder facing the inner cylinder; The condenser plate is equipped with pipes, and the pipes are filled with heat transfer fluid; The pipeline includes: Multiple trunk roads, each trunk road having two ends, namely end a and end b, which are arranged opposite to each other in the extension direction of the trunk road, and in the top and bottom direction of the box body, the position of end a is higher than the position of end b; A branch road connected to the main road has two ends, namely end c and end d, which are arranged opposite to each other in the extension direction of the branch road. In the top and bottom direction of the box body, the position of end c is higher than the position of end d. Some of the main road is connected to the c-end of the branch road, and some of the main road is connected to the d-end of the branch road; The minimum angle formed by the branch road and the main road is an acute angle.

10. A clothes drying device, characterized in that, include: Box; An outer cylinder is located inside the housing, and a return air vent is provided on the rear end wall of the outer cylinder; The inner drum is rotatably disposed inside the outer drum, and the inner drum has a drying chamber that can accommodate clothes. The cavity between the inner drum and the outer drum is a first cavity, and the drying chamber is connected to the return air vent through the first cavity. A drying air duct is provided outside the outer cylinder. One end of the drying air duct is connected to the return air inlet, and the other end of the drying air duct is connected to the drying chamber. The drying duct is configured to supply gas for drying clothes into the drying chamber and to extract gas from the first chamber through the return air vent. A condenser plate that is cooled by a cooling mechanism is disposed on the rear end wall of the outer cylinder facing the inner cylinder; The condenser plate is equipped with pipes, and the pipes are filled with heat transfer fluid; The pipeline includes: The trunk road has an a end and a b end that are arranged opposite to each other along the extension direction of the trunk road, and in the top and bottom direction of the housing, the position of the a end is higher than the position of the b end; Branch roads that connect to the main road; The plane perpendicular to the left and right direction of the box and passing through the rotation axis of the inner cylinder is used as the reference plane; The minimum distance between end a of the trunk road and the reference plane is D1, and the minimum distance between end b of the trunk road and the reference plane is D2. The condition D1 and D2 satisfy: D1≤D2.

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