A twin-drum washing machine

Abstract

This invention provides a twin-tub washing machine, belonging to the field of washing machine technology. It includes a first washing tub and a second washing tub; an air duct structure, the first and second washing tubs being connected by the air duct structure, with the first washing tub and the air duct structure forming a first circulating air duct, and the second washing tub and the air duct structure forming a second circulating air duct; and a vibration damping system, including a first vibration damping system disposed in the first washing tub and a second vibration damping system disposed in the second washing tub. By setting an air duct structure between the first and second washing tubs, this invention allows the first and second washing tubs to share a common air duct, and also connects the first and second washing tubs, improving the rigidity of the twin-tub operation. During washing machine operation, the shared air duct connection transmits vibrations to the vibration damping systems of both tubs, enhancing the stability and reliability of the twin-tub operation.

Description

Technical Field

[0001] This invention relates to the field of washing machine technology, and more particularly to a twin-tub washing machine. Background Technology

[0002] With the improvement of living standards, washing machines with partitioned washing function have become an important feature for families when choosing a washing machine. The twin-tub washing machines with partitioned washing function on the market usually have one tub for single washing and the other for washing and drying. In most twin-tub washing machines with partitioned washing function, the two washing tubs are usually arranged one above the other.

[0003] However, twin-tub washing machines with washing drums arranged vertically have poor stability and reliability during operation. Summary of the Invention

[0004] To overcome the problem of poor stability and reliability of twin-tub washing machines in related technologies, this invention proposes a twin-tub washing machine that can improve operational stability and reliability, comprising:

[0005] It includes a first washing drum and a second washing drum distributed vertically.

[0006] The air duct structure connects the first washing drum and the second washing drum, and the first washing drum and the air duct structure form a first circulating air duct, and the second washing drum and the air duct structure form a second circulating air duct.

[0007] The vibration damping system includes a first vibration damping system installed in the first washing drum and a second vibration damping system installed in the second washing drum.

[0008] In the above technical solution, the air duct structure is connected to the first washing drum by a fixed connection and a flexible connection, and the air duct structure is connected to the second washing drum by a fixed connection and a flexible connection.

[0009] In the above technical solution, the air duct structure includes an intermediate air duct disposed between the first washing drum and the second washing drum, and a front air duct assembly and a rear air duct assembly disposed at both ends of the air duct path of the intermediate air duct.

[0010] The front air duct assembly includes a first front air duct with one end connected to the air outlet side of the middle air duct and the other end connected to the front side of the first washing drum. The front air duct assembly also includes a second front air duct with one end connected to the air outlet side of the middle air duct and the other end connected to the front side of the second washing drum.

[0011] The rear air duct assembly includes a first rear air duct with one end connected to the air inlet side of the middle air duct and the other end connected to the rear side of the first washing drum. The rear air duct assembly also includes a second rear air duct with one end connected to the air inlet side of the middle air duct and the other end connected to the rear side of the second washing drum.

[0012] The intermediate air duct, the first front air duct, the first washing drum and the first rear air duct are connected in sequence to form the circulating drying air path of the first washing drum, and the intermediate air duct, the second front air duct, the second washing drum and the second rear air duct are connected in sequence to form the circulating drying air path of the second washing drum.

[0013] The first front air duct is connected to the front side of the first washing drum in a first connection method, the second front air duct is connected to the front side of the second washing drum in a second connection method, the first rear air duct is connected to the rear side of the first washing drum in a second connection method, and the second rear air duct is connected to the rear side of the second washing drum in a first connection method.

[0014] The first connection method is one of a fixed connection method and a soft connection method, and the second connection method is the other of a fixed connection method and a soft connection method.

[0015] In the above technical solution, the first front air duct is fixedly connected to the first washing drum and flexibly connected to the middle air duct, and the second front air duct is flexibly connected to the second washing drum and flexibly connected to the middle air duct.

[0016] The first front air duct, the middle air duct, and the second front air duct are connected sequentially from top to bottom;

[0017] The outlet of the first front air duct connects to the top of the door seal of the first washing drum; the outlet of the second front air duct connects to the top of the door seal of the second washing drum.

[0018] In the above technical solution, the first rear air duct is flexibly connected to the first washing drum and flexibly connected to the middle air duct, and the second rear air duct is fixedly connected to the second washing drum and fixedly connected to the middle air duct.

[0019] The first rear air duct, the middle air duct, and the second rear air duct are connected sequentially from top to bottom.

[0020] In the above technical solution, the first front air duct has an air duct profile surface that is adapted to at least part of the outer contour of the first washing drum in its length direction.

[0021] The first front air duct is designed such that when the first front air duct is fixedly assembled on the first washing drum, the duct profile surface fits at least part of the outer profile of the first washing drum.

[0022] In the above technical solution, the first front air duct includes a front air duct upper cover and a front air duct lower cover, which are detachably connected.

[0023] The air duct profile includes an upper cover profile formed along the length of the upper cover of the front air duct and a lower cover profile formed along the length of the lower cover of the front air duct.

[0024] In the above technical solution, the intermediate air duct is located between the bottom of the first washing drum and the top of the second washing drum in the height direction of the washing machine and is fixed to the top of the second washing drum. The intermediate air duct is located at a distance from the surface passing through the rotation axis of the first washing drum and the rotation axis of the second washing drum in the width direction of the washing machine.

[0025] The rotation axes of the first and second washing drums coincide when viewed from above.

[0026] In the above technical solution, the intermediate air duct includes a fan section, a heat exchange section, and an air distribution section that are connected in sequence and have fluid communication with each other;

[0027] The fan section is equipped with a fan and is connected to the first rear air duct and the second rear air duct. The heat exchange section is equipped with a heat exchange component. The air distribution section is equipped with an air distribution component and the air distribution end is connected to the first front air duct and the second front air duct.

[0028] The air distribution section can adjust the airflow rate from the first front air duct into the first washing drum, and also adjust the airflow rate from the second front air duct into the second washing drum.

[0029] In the above technical solution, the air distribution section includes:

[0030] The air distribution box and the air distribution component are provided. The air distribution box has an air distribution cavity inside. The air distribution component is rotatably disposed in the air distribution cavity. The surface of the air distribution box has a first air outlet for connecting to the first front air duct and a second air outlet for connecting to the second front air duct.

[0031] The air distribution component is designed such that when the air distribution component is driven to rotate, at least a portion of the first air outlet and / or at least a portion of the second air outlet can be opened to adjust the airflow rate from the first front air duct into the first washing drum, and to adjust the airflow rate from the second front air duct into the second washing drum.

[0032] In the above technical solution, the air distribution chamber is a circular chamber, and the air distribution component is an air distribution baffle that is rotatably disposed in the air distribution chamber;

[0033] The air distribution baffle has an outer peripheral surface that fits into the air distribution cavity;

[0034] When the air distribution baffle is driven to rotate, the outer circumferential surface of the air distribution baffle can slide along the inner circumferential surface of the air distribution cavity.

[0035] In the above technical solution, the heat exchanger includes a two-phase assembly, which includes an evaporator and a condenser connected by a refrigerant pipeline;

[0036] The washing machine also includes a compressor, which is connected to the condenser via refrigerant lines;

[0037] The washing machine also includes a cabinet, with the compressor fixedly installed inside the bottom of the cabinet.

[0038] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0039] In this embodiment of the invention, an air duct structure is provided between the first and second washing drums. On the one hand, the air duct structure allows the first and second washing drums to share a common air duct. On the other hand, the air duct structure also connects the first and second washing drums, improving the rigidity of the dual-drum operation. During dual-drum operation, the vibrations of the two drums can be transmitted to each other, and the vibrations are ultimately eliminated through the vibration damping system of the two drums. Each drum has a set of vibration damping system consisting of a hanging spring and a damper. That is, the two drums connected by the common air duct can transmit vibrations to the vibration damping system of the two drums during operation, thereby enhancing the stability and reliability of the dual-drum operation. Attached Figure Description

[0040] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0041] Figure 1 This is a schematic diagram of the structure of the first and second washing drums arranged vertically in an embodiment of the twin-drum washing machine of the present invention;

[0042] Figure 2 This is a schematic diagram of the structure of the first washing drum and the first front air duct after assembly in an embodiment of the twin-drum washing machine of the present invention;

[0043] Figure 3 This is a schematic diagram of the structure of the first front air duct and the air distribution component after assembly in an embodiment of the twin-tub washing machine of the present invention;

[0044] Figure 4 This is an exploded structural diagram of the first front air duct and air distribution assembly in the twin-tub washing machine of the present invention.

[0045] Wherein: 1-First washing drum; 2-Second washing drum; 3-First front air duct; 3a-Front air duct upper cover; 3b-Front air duct lower cover; 31-Front air duct outline; 311-Upper cover outline; 312-Lower cover outline; 4-Air distribution section; 41-Air distribution box; 42-Air distribution component; 52-Flexible connector; 53-Second front air duct; 6-First rear air duct; 7-Fan assembly; 8-Heat exchange assembly; 9-Compressor; 10-Second rear air duct. Detailed Implementation

[0046] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the invention as detailed in the appended claims.

[0047] Currently available twin-tub washing machines suffer from poor stability and reliability during operation. In this embodiment of the invention, an air duct structure is installed between the first and second washing tubs. On one hand, this structure allows the first and second tubs to share a common air duct. On the other hand, it connects the first and second tubs, improving the rigidity of the twin-tub operation. During twin-tub operation, vibrations can be transmitted between the two tubs, and the vibrations are ultimately eliminated through the vibration damping systems of both tubs. Each tub has a vibration damping system consisting of a spring and a damper. Therefore, the two tubs connected by the shared air duct transmit vibrations to their respective damping systems during operation, enhancing the stability and reliability of the twin-tub operation.

[0048] The following is in conjunction with the appendix Figure 1 -Appendix Figure 4 The technical solution of this embodiment is described in detail. Unless otherwise specified, the following implementation methods and embodiments can be combined with each other.

[0049] Example

[0050] like Figures 1-4 As shown, this embodiment proposes a twin-tub washing machine, including:

[0051] It includes a first washing drum 1 and a second washing drum 2 distributed vertically; the first washing drum 1 includes a first outer drum and a first inner drum pivotally disposed in the first outer drum, and the second washing drum 2 includes a second outer drum and a second inner drum pivotally disposed in the second outer drum.

[0052] The air duct structure connects the first washing drum 1 and the second washing drum 2, and the first washing drum 1 and the air duct structure form a first circulating air duct, and the second washing drum 1 and the air duct structure form a second circulating air duct.

[0053] The vibration damping system includes a first vibration damping system installed in the first washing drum 1 and a second vibration damping system installed in the second washing drum 2 (not shown in the figure). Both the first and second vibration damping systems can be a combination of a spring and a damper.

[0054] In this embodiment of the invention, an air duct structure is provided between the first washing drum 1 and the second washing drum 2. On the one hand, the air duct structure allows the first washing drum 1 and the second washing drum 2 to share a single air duct, eliminating the need for additional air ducts and reducing the size and manufacturing cost of the washing machine. On the other hand, the air duct structure also connects the first washing drum 1 and the second washing drum 2, improving the rigidity of the twin drums during operation. During twin drum operation, the vibrations of the twin drums can be transmitted to each other through the air duct structure, and the vibrations are ultimately eliminated by the vibration damping system of the two drums. Each drum has a vibration damping system consisting of a hanging spring and a damper. That is, the two drums connected by the shared air duct can transmit vibrations to the vibration damping system of the two drums during operation, enhancing the stability and reliability of the twin drum operation.

[0055] Specifically, the air duct structure is connected to the first washing drum 1 through a fixed connection and a flexible connection, and the air duct structure is connected to the second washing drum 2 through a fixed connection and a flexible connection.

[0056] More specifically, the air duct structure includes an intermediate air duct located between the first washing drum 1 and the second washing drum 2, and a front air duct assembly and a rear air duct assembly located at both ends of the air duct path of the intermediate air duct.

[0057] The front air duct assembly includes a first front air duct 3 with one end connected to the air outlet side of the middle air duct and the other end connected to the front side of the first washing drum 1. The front air duct assembly also includes a second front air duct 53 with one end connected to the air outlet side of the middle air duct and the other end connected to the front side of the second washing drum 2.

[0058] The rear air duct assembly includes a first rear air duct 6 with one end connected to the air inlet side of the middle air duct and the other end connected to the rear side of the first washing drum 1. The rear air duct assembly also includes a second rear air duct 10 with one end connected to the air inlet side of the middle air duct and the other end connected to the rear side of the second washing drum 2.

[0059] The intermediate air duct, the first front air duct 3, the first washing drum 1 and the first rear air duct 6 are connected in sequence to form the circulating drying air path of the first washing drum 1. The intermediate air duct, the second front air duct 53, the second washing drum 2 and the second rear air duct 10 are connected in sequence to form the circulating drying air path of the second washing drum.

[0060] The first front air duct 3 is connected to the front side of the first washing drum 1 in a first connection method, the second front air duct 53 is connected to the front side of the second washing drum 2 in a second connection method, the first rear air duct 6 is connected to the rear side of the first washing drum 1 in a second connection method, and the second rear air duct 10 is connected to the rear side of the second washing drum 2 in a first connection method.

[0061] The first connection method is one of a fixed connection method and a soft connection method, and the second connection method is the other of a fixed connection method and a soft connection method.

[0062] Specifically, the first front air duct 3 is fixedly connected to the first washing drum 1 and flexibly connected to the middle air duct, and the second front air duct 53 is flexibly connected to the second washing drum 2 and flexibly connected to the middle air duct.

[0063] The first front air duct 3, the middle air duct, and the second front air duct are connected sequentially from top to bottom;

[0064] Among them, such as Figures 1-3 As shown, the connection point between the air outlet of the first front air duct 3 and the first washing drum 1 is located at the top of the door seal of the first washing drum 1; the connection point between the air outlet of the second front air duct 53 and the second washing drum 2 is located at the top of the door seal of the second washing drum 2.

[0065] It is worth noting that when the first washing drum 1 and the second washing drum 2 are distributed vertically in the embodiments of the present invention, the first washing drum 1, which is located at the top, is at a higher position and is lighter in weight, making it prone to swaying. Therefore, by setting the first front air duct 3, which is fixedly assembled with the first washing drum 1, the first washing drum 1 can be counterweighted, thereby improving the overall operating stability of the machine.

[0066] Meanwhile, since the first front air duct 3 is fixedly mounted on the first washing drum 1, when the first washing drum 1 shakes, it can prevent the first front air duct 3 from colliding with the first washing drum 1. {Since the first front air duct 3 is fixedly mounted on the first washing drum 1, when the first washing drum 1 moves, the first front air duct 3 moves synchronously, thereby avoiding collision}.

[0067] Preferably, the first front air duct 3 is fixed to the surface of the first washing drum 1 by screws.

[0068] Specifically, the first rear air duct 6 is flexibly connected to the first washing drum 1 and flexibly connected to the middle air duct, and the second rear air duct 10 is fixedly connected to the second washing drum 2 and fixedly connected to the middle air duct.

[0069] The first rear air duct 6, the middle air duct, and the second rear air duct 10 are connected sequentially from top to bottom.

[0070] It should be noted that when the air duct component in the embodiment of the present invention adopts a flexible connection method, it uses a flexible connector 52. Preferably, the flexible connector 52 includes a flexible connector head and a clamp. By setting the flexible connector head and the clamp, the sealing effect at the flexible connection position can be improved.

[0071] It should also be noted that the material of the flexible connector 52 used in the embodiments of the present invention only needs to meet the requirement of having a certain supporting effect when subjected to a small impact force and having a certain elastic deformation effect when subjected to a large impact force. The specific material of the flexible connector is not limited in the embodiments of the present invention.

[0072] In this embodiment of the invention, a flexible connector is used to connect the air duct. This ensures the transmission of vibration force while preventing damage to the connection point caused by excessive vibration force.

[0073] It should also be noted that the first front air duct 3 has an air duct profile surface 31 in its length direction that is adapted to at least part of the outer contour of the first washing drum 1;

[0074] The first front air duct 3 is designed such that when the first front air duct 3 is fixedly assembled on the first washing drum 1, the air duct profile surface 31 fits against at least part of the outer profile of the first washing drum 1.

[0075] Since the air inlet of the first washing drum 1 located at the top of the door seal is relatively long in order to achieve the drying function of the first washing drum, the path of the first front air duct 3 is relatively long. In this embodiment of the invention, in order to improve the overall operational stability of the washing machine while extending the path of the first front air duct 3, an air duct contour surface 31 adapted to the outer contour of the first outer drum is provided on the first front air duct 3. This can both extend the air duct path of the first front air duct 3 and prevent the side length of the path from affecting the operational stability of the machine.

[0076] Specifically, the first front air duct 3 includes a front air duct upper cover 3a and a front air duct lower cover 3b, which are detachably connected.

[0077] The air duct profile surface 31 includes an upper cover profile surface 311 formed along the length of the upper cover 3a of the front air duct and a lower cover profile surface 312 formed along the length of the lower cover 3b of the front air duct.

[0078] Preferably, the upper front air duct cover 3a and the lower front air duct cover 3b are detachably connected by screws.

[0079] In this embodiment of the invention, by setting the upper cover 3a and the lower cover 3b of the air duct to be detachable from the left and right, it is more conducive to the forming of parts and easier to assemble the air duct.

[0080] In any of the above embodiments, the intermediate air duct is located between the bottom of the first washing drum 1 and the top of the second washing drum 2 in the height direction of the washing machine and is fixed to the top of the second washing drum 2. The intermediate air duct is located at a distance from the surface passing through the rotation axis of the first washing drum 1 and the rotation axis of the second washing drum 2 in the width direction of the washing machine.

[0081] The rotation axis of the first washing drum 1 and the rotation axis of the second washing drum 2 coincide in the top view of the washing machine.

[0082] In this embodiment of the invention, by setting the connecting air duct assembly in the space between the first washing drum and the second washing drum, the extra remaining space when the first washing drum 1 and the second washing drum 2 are arranged vertically is fully utilized. At the same time, by setting the connecting air duct assembly on one side of the space between the first outer drum and the second outer drum, the space between the first washing drum 1 and the second washing drum 2 can be fully utilized while avoiding excessive bends in the air duct path that would affect the airflow effect.

[0083] In any of the above embodiments, the intermediate air duct includes a fan section 7, a heat exchange section 8, and an air distribution section 4 that are connected in sequence and in fluid communication.

[0084] The fan section 7 is equipped with a fan and is connected to the first rear air duct 6 and the second rear air duct 10. The heat exchange section 8 is equipped with a heat exchange component. The air distribution section 4 is equipped with an air distribution component and the air distribution end 4 is connected to the first front air duct 3 and the second front air duct 53.

[0085] The air distribution section 4 can adjust the airflow rate from the first front air duct 3 into the first washing drum 1, and adjust the airflow rate from the second front air duct 53 into the second washing drum 2.

[0086] Specifically, such as Figure 3 As shown, air distribution section 4 includes:

[0087] The air distribution box 41 and the air distribution component 42 are formed inside the air distribution box 41. The air distribution component is rotatably disposed in the air distribution cavity. The surface of the air distribution box 41 is formed with a first air outlet for connecting to the first front air duct 3 and a second air outlet for connecting to the second front air duct 53.

[0088] The air distribution component 42 is designed such that when the air distribution component 42 is driven to rotate, at least part of the first air outlet and / or at least part of the second air outlet can be opened to adjust the air flow rate from the first front air duct 3 into the first washing drum 1, and to adjust the air flow rate from the second front air duct 53 into the second washing drum 2.

[0089] In this embodiment of the invention, a rotatable air distribution component 42 is provided in the air distribution box 41 of the air distribution assembly 4. By controlling the rotation angle of the air distribution component 42, the first washing drum 1 can be dried alone, the second washing drum 2 can be dried alone, or the first washing drum 1 or the second washing drum 2 can be dried simultaneously, or the airflow input to each washing drum can be adjusted during drying.

[0090] More specifically, the air distribution chamber is a circular chamber, and the air distribution component 42 is an air distribution baffle that is rotatably installed in the air distribution chamber;

[0091] The air distribution baffle has an outer peripheral surface that fits into the air distribution cavity;

[0092] When the air distribution baffle is driven to rotate, the outer circumferential surface of the air distribution baffle can slide along the inner circumferential surface of the air distribution cavity.

[0093] It is worth noting that to achieve a specific drying effect in the washing machine {drying the first washing drum 1 alone, drying the second washing drum 2 alone, or drying both the first washing drum 1 and the second washing drum 2 simultaneously}, it is necessary to control the rotation of the air distribution baffle at different angles. In actual products, to achieve a preset drying effect after the air distribution baffle rotates to a preset angle, this can be achieved by designing the dimensions of the air distribution baffle and / or the dimensions of the first and / or second air outlets of the connecting air duct assembly.

[0094] In any of the above embodiments, the heat exchanger includes a two-phase assembly, which includes an evaporator and a condenser connected by a refrigerant line.

[0095] The washing machine also includes a compressor 9, which is connected to the condenser via a refrigerant line;

[0096] The washing machine also includes a cabinet, with the compressor 9 fixedly installed at the bottom of the cabinet.

[0097] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims.

[0098] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A twin-tub washing machine, characterized in that, include: It includes a first washing drum (1) and a second washing drum (2) distributed vertically. The air duct structure is such that the first washing drum (1) and the second washing drum (2) are connected through the air duct structure, and the first washing drum (1) and the air duct structure form a first circulating air duct, and the second washing drum (2) and the air duct structure form a second circulating air duct; The vibration damping system includes a first vibration damping system disposed in the first washing drum (1) and a second vibration damping system disposed in the second washing drum (2); The air duct structure is connected to the first washing drum by a fixed connection and a flexible connection, and the air duct structure is connected to the second washing drum by a fixed connection and a flexible connection. The air duct structure includes an intermediate air duct disposed between the first washing drum (1) and the second washing drum (2), and a front air duct assembly and a rear air duct assembly disposed at both ends of the air duct path of the intermediate air duct. The front air duct assembly includes a first front air duct (3) with one end connected to the air outlet side of the middle air duct and the other end connected to the front side of the first washing drum (1). The front air duct assembly also includes a second front air duct (53) with one end connected to the air outlet side of the middle air duct and the other end connected to the front side of the second washing drum (2). The rear air duct assembly includes a first rear air duct (6) with one end connected to the air inlet side of the middle air duct and the other end connected to the rear side of the first washing drum (1). The rear air duct assembly also includes a second rear air duct (10) with one end connected to the air inlet side of the middle air duct and the other end connected to the rear side of the second washing drum (2). The intermediate air duct, the first front air duct (3), the first washing drum (1) and the first rear air duct (6) are connected in sequence to form the circulating drying air path of the first washing drum (1), and the intermediate air duct, the second front air duct (53), the second washing drum (2) and the second rear air duct (10) are connected in sequence to form the circulating drying air path of the second washing drum. The first front air duct (3) is connected to the front side of the first washing drum (1) in a first connection manner, the second front air duct (53) is connected to the front side of the second washing drum (2) in a second connection manner, the first rear air duct (6) is connected to the rear side of the first washing drum (1) in a second connection manner, and the second rear air duct (10) is connected to the rear side of the second washing drum (2) in a first connection manner. The first connection method is one of a fixed connection method and a soft connection method, and the second connection method is the other of a fixed connection method and a soft connection method.

2. The twin-tub washing machine according to claim 1, wherein the first front air duct (3) is fixedly connected to the first washing tub (1) and flexibly connected to the middle air duct, and the second front air duct (53) is flexibly connected to the second washing tub (2) and flexibly connected to the middle air duct; The first front air duct (3), the intermediate air duct and the second front air duct are connected sequentially from top to bottom; The air outlet of the first front air duct (3) is connected to the first washing drum (1) at the top of the door seal of the first washing drum (1); the air outlet of the second front air duct (53) is connected to the second washing drum (2) at the top of the door seal of the second washing drum (2).

3. The twin-tub washing machine according to claim 1, characterized in that, The first rear air duct (6) is flexibly connected to the first washing drum (1) and flexibly connected to the intermediate air duct; the second rear air duct (10) is fixedly connected to the second washing drum (2) and fixedly connected to the intermediate air duct. The first rear air duct (6), the middle air duct, and the second rear air duct (10) are connected sequentially from top to bottom.

4. The twin-tub washing machine according to claim 1, characterized in that, The first front air duct (3) has an air duct profile surface (31) in its length direction that is adapted to at least part of the outer contour of the first washing drum (1). The first front air duct (3) is designed such that when the first front air duct (3) is fixedly assembled on the first washing drum (1), the air duct profile surface (31) fits against at least a portion of the outer profile of the first washing drum (1).

5. The twin-tub washing machine according to claim 4, characterized in that, The first front air duct (3) includes a front air duct upper cover (3a) and a front air duct lower cover (3b), which are detachably connected; The air duct profile surface (31) includes an upper cover profile surface (311) formed in the length direction of the upper cover (3a) of the front air duct and a lower cover profile surface (312) formed in the length direction of the lower cover (3b) of the front air duct.

6. The twin-tub washing machine according to claim 1, characterized in that, The intermediate air duct is located between the bottom of the first washing drum (1) and the top of the second washing drum (2) in the height direction of the twin-drum washing machine and is fixed to the top of the second washing drum (2). The intermediate air duct is located at a distance from the surface passing through the rotation axis of the first washing drum (1) and the rotation axis of the second washing drum (2) in the width direction of the twin-drum washing machine. The rotation axis of the first washing drum (1) and the rotation axis of the second washing drum (2) coincide in the top view of the twin-drum washing machine.

7. The twin-tub washing machine according to claim 1, characterized in that, The intermediate air duct includes a fan section (7), a heat exchange section (8), and an air distribution section (4) that are connected in sequence and have fluid communication. The fan section (7) is equipped with a fan and the fan section (7) is connected to the first rear air duct (6) and the second rear air duct (10). The heat exchange section (8) is equipped with a heat exchange component. The air distribution section (4) is equipped with an air distribution component and the air distribution section (4) is connected to the first front air duct (3) and the second front air duct (53). The air distribution section (4) can adjust the air flow rate from the first front air duct (3) into the first washing drum (1) and adjust the air flow rate from the second front air duct (53) into the second washing drum (2).

8. The twin-tub washing machine according to claim 7, characterized in that, The air distribution section (4) includes: The air distribution box (41) and the air distribution component (42) are provided. The air distribution box (41) has an air distribution cavity inside. The air distribution component is rotatably disposed in the air distribution cavity. The surface of the air distribution box (41) has a first air outlet for connecting to the first front air duct (3) and a second air outlet for connecting to the second front air duct (53). The air distribution element (42) is designed to open at least part of the first air outlet and / or at least part of the second air outlet when the air distribution element (42) is driven to rotate, so as to regulate the air flow rate from the first front air duct (3) into the first washing drum (1) and regulate the air flow rate from the second front air duct (53) into the second washing drum (2).

9. The twin-tub washing machine according to claim 8, characterized in that, The air distribution chamber is a circular chamber, and the air distribution component (42) is an air distribution baffle that is rotatably disposed in the air distribution chamber; The air distribution baffle has an outer peripheral surface that fits into the air distribution cavity; When the air distribution baffle is driven to rotate, the outer peripheral surface of the air distribution baffle can slide along the inner peripheral surface of the air distribution cavity.

10. The twin-tub washing machine according to claim 7, characterized in that, The heat exchanger includes a two-electrode assembly, which includes an evaporator and a condenser connected by a refrigerant pipeline; The twin-tub washing machine also includes a compressor (9), which is connected to the condenser via a refrigerant pipeline; The twin-tub washing machine also includes a cabinet, and the compressor (9) is fixedly installed at the bottom of the inside of the cabinet.

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