Clothes treating equipment and roller assembly thereof

Abstract

The utility model relates to clothes processing equipment and a roller assembly thereof, the roller assembly comprises a first roller and a first drying tunnel communicated with an inner cavity of the first roller, the front end of the first roller is provided with a concave part, and the concave part corresponds to the part, located in front of the first roller, of the first drying tunnel. According to the technical scheme, the sunken part is arranged at the front end of the first roller, the part, located in front of the first roller, of the first drying tunnel can be avoided in the front-back direction of the equipment, the first roller is prevented from colliding with the first drying tunnel when vibrating front and back, the stability of the whole equipment is improved, and the service life of the whole equipment is prolonged.

Description

Technical Field

[0001] The present disclosure relates to the technical field of cleaning equipment, and particularly relates to a laundry treatment device and a drum assembly thereof. Background Art

[0002] In order to improve the quality of laundry treatment, a laundry function and a drying function are usually provided in current laundry treatment devices. In related technologies, the laundry function and the drying function of the laundry treatment device are usually separately provided, which results in a relatively large volume of the laundry treatment device and a low treatment efficiency. If multiple usage functions are integrated, for example, an air duct for drying is connected to the drum, then it is necessary to consider how to reasonably arrange these structures in a relatively small space. This is because the drum will generate vibrations during operation, and if the layout is compact, collisions will inevitably occur during vibrations, reducing the stability of the whole machine. Summary of the Utility Model

[0003] To overcome the problems existing in related technologies, the present disclosure provides a laundry treatment device and a drum assembly thereof.

[0004] An embodiment of the present disclosure provides a drum assembly, including a first drum and a first drying duct communicating with the inner cavity of the first drum. A recessed portion is provided at the front end of the first drum, and the recessed portion corresponds to a part of the first drying duct located in front of the first drum.

[0005] Optionally, the first drying duct includes a first section extending laterally, a second section extending in the front-back direction, and a transition section connecting the first section and the second section. The recessed portion is disposed opposite to the transition section.

[0006] Optionally, a door seal is installed at the front end of the first drum, the first drying duct is connected to the door seal, and the first section and the door seal are of an integral structure.

[0007] Optionally, in the front-back direction, the distance between the first drying duct and the recessed portion is a first threshold value, and the first threshold value is configured to be greater than the amplitude of the first drying duct moving backward relative to the recessed portion.

[0008] Optionally, the first threshold value is 1 mm to 5 mm.

[0009] Optionally, a flange is installed at the front end of the first drum, a door seal is installed at the front end of the flange, and the recessed portion is formed on the front end surface of the flange.

[0010] Optionally, in the lateral direction, the distance between the outer periphery of the flange and the first drying duct is 8 mm to 16 mm, and the recessed portion is provided at the edge of the flange close to the first drying duct in the lateral direction.

[0011] Optionally, the first drying channel is connected to the side of the door seal and is located vertically between the horizontal axis of the door seal and the top of the door seal.

[0012] Optionally, the distance between the top of the first drum and the top of the housing of the laundry treatment device is 30 mm to 39 mm.

[0013] Optionally, an annular clamping groove is formed circumferentially at the end of the door seal, the flange has an annular clamping arm, and the annular clamping arm can be inserted into the annular clamping groove in a form-fitting manner to abut the door seal against the end face of the first drum.

[0014] Optionally, a positioning notch is formed in the inner ring of the flange, a positioning lug corresponding to the positioning notch is formed on the door seal, and the positioning lug is inserted and matched with the positioning notch.

[0015] Optionally, the drum assembly includes a second drum, the diameter of the second drum is larger than that of the first drum, the first drum is arranged obliquely above the second drum, and a second drying channel is connected above the second drum, and the second drying channel is located beside the first drum.

[0016] According to a second aspect of the embodiments of the present disclosure, a laundry treatment device is provided, including a housing and a drum assembly arranged in the housing, and the drum assembly is the drum assembly provided by the present disclosure.

[0017] The technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects:

[0018] A recess is provided at the front end of the first drum, which can avoid the part of the first drying channel in front of the first drum in the front-rear direction of the device, prevent the first drum from colliding with the first drying channel when vibrating back and forth, and improve the overall stability and service life of the device.

[0019] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. Description of the Drawings

[0020] The drawings here are incorporated into the specification and constitute a part of this specification, showing the embodiments consistent with the present disclosure and used together with the specification to explain the principles of the present disclosure.

[0021] Figure 1 is a partial installation schematic diagram of the first drum shown according to an exemplary embodiment.

[0022] Figure 2 is a partial cross-sectional view of the first drying channel and its connection structure shown according to an exemplary embodiment.

[0023] Figure 3 It is an exploded view of the assembly of a door seal and a flange shown according to an exemplary embodiment.

[0024] Figure 4 It is a cross-sectional view at the first drum shown according to an exemplary embodiment.

[0025] Figure 5 is Figure 4 an enlarged view of part A in

[0026] Figure 6 It is a schematic diagram of a laundry treating apparatus shown according to an exemplary embodiment.

[0027] Description of reference numerals

[0028] 10 - outer shell, 20 - second drum, 30 - first drum, 31 - flange, 311 - recess, 312 - annular clamping arm, 313 - positioning notch, 32 - door seal, 321 - annular clamping groove, 33 - drum cover, 50 - first drying channel, 501 - first section, 502 - second section, 503 - transition section, 51 - second drying channel. Detailed implementation manners

[0029] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present disclosure. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0030] The embodiments of the present disclosure provide a laundry treating apparatus and a drum assembly thereof. Referring to Figure 6 , the laundry treating apparatus may include an outer shell 10 and a drum assembly disposed within the outer shell 10. Referring to Figure 1 and Figure 2, the drum assembly may include a first drum 30 and a first drying channel 50. The first drying channel 50 may communicate with the inner cavity of the first drum 30. A recess 311 may be provided at the front end of the first drum 30, and the recess 311 may correspond to the portion of the first drying channel 50 located in front of the first drum 30 to avoid the portion of the first drying channel 50 located in front of the first drum 30 in the front-rear direction of the device, so as to prevent the first drum 30 from colliding with the first drying channel 50 when vibrating back and forth, thereby improving the overall stability and service life of the device, and preventing abnormal noise caused by the collision between the first drying channel 50 and the first drum 30, and improving the user experience. It should be noted that the recess 311 may be configured to recess backward from the front end face of the first drum 30. Here, the front and rear are defined according to the direction of the laundry treatment device during use. The side facing the user is the front, and the opposite is the rear. Specifically, reference may be made to Figure 4 the direction indicated by the arrow.

[0031] Exemplarily, referring to Figure 2 , the first drying channel 50 may include a first section 501, a second section 502, and a transition section 503. Among them, the first section 501 may extend along the side direction of the device. The side direction herein refers to the left-right direction when the user faces the laundry treatment device. The second section 502 may extend along the front-rear direction of the device. The first section 501 and the second section 502 are connected by the transition section 503, and the recess 311 may be disposed opposite to the transition section 503. In this embodiment, the first section 501 and the second section 502 extend along the side direction and the front-rear direction of the device respectively, and a relatively large gap may be formed between them and the front end face of the first drum 30, making it not easy to collide with the first drum 30. The transition section 503, as a transition structure connecting the first section 501 and the second section 502 with different extension directions in space, especially when turning at a place close to the first drum 30, is likely to collide with the first drum 30 during vibration. Therefore, a recess 311 may be formed in the area corresponding to the transition section 503 to increase the distance between the transition section 503 and the first drum 30, ensuring a relatively safe avoidance distance between the two during vibration.

[0032] In some embodiments, referring to Figure 1, a door seal 32 can be installed at the front end of the first drum 30. The first drying channel 50 can be connected to the door seal 32, and the first section 501 can be an integral structure with the door seal 32. In this embodiment, the first drying channel 50 can be connected to the front end of the first drum 30 through the door seal 32, so as to communicate with the inner cavity of the first drum 30 to dry the clothes in the first drum 30. This setting can prevent the first drying channel 50 from being directly connected to the first drum 30, ensuring the structural integrity of the first drum 30. At the same time, the door seal 32 and the first section 501 of the first drying channel 50 are set as an integral structure, enabling the first section 501 to vibrate synchronously with the first drum 30 through the door seal 32, increasing the movement harmony between the two, and improving the vibration stability of the equipment. Moreover, the integral structure of the first section 501 and the door seal 32 can also reduce the installation process, improve the assembly efficiency, and reduce the production cost.

[0033] Exemplarily, referring to Figure 2 , in the front-back direction of the equipment, the distance between the first drying channel 50 and the recess 311 can be defined as the first threshold value, and the first threshold value can be configured to be greater than the amplitude of the first drying channel 50 relative to the recess 311 moving backward. The amplitude here can be defined as the vibration offset generated by the relevant structure during vibration. The amplitude of the first drying channel 50 relative to the recess 311 moving backward refers to the relative backward displacement of the first drying channel 50 and the recess 311. Specifically, when the recess 311 does not move forward and backward, it refers to the backward displacement of the first drying channel 50. When the recess 311 moves backward, it refers to the difference between the backward displacement stroke of the first drying channel 50 and the backward displacement stroke of the recess 311. When the recess 311 moves forward, it refers to the sum of the backward displacement stroke of the first drying channel 50 and the forward displacement stroke of the recess 311. Therefore, when the distance between the first drying channel 50 and the recess 311 (i.e., the first threshold value) satisfies being greater than the amplitude of the first drying channel 50 relative to the recess 311 moving backward, it can ensure that the first drying channel 50 has sufficient clearance distance during vibration to avoid collision with the first drum 30.

[0034] It should be noted that due to the transmissibility of vibration gradually weakening with the increase of the transmission distance, it can be understood that as the vibration source, the amplitude of the first drum 30 is greater than that of the first drying channel 50. When the first drying channel 50 has the above-mentioned first section 501 and second section 502, the amplitude of the first drying channel 50 gradually weakens from the first section 501 to the second section 502. At this time, as long as the first threshold value satisfies being greater than the amplitude of the second section 502 relative to the recess 311 moving backward, it can ensure that the first drying channel 50 has sufficient clearance distance during vibration. This setting method can enable the recess 311 to meet the avoidance effect without being recessed too deeply to affect the structural strength of the first drum 30.

[0035] In some embodiments, the first threshold may be 1 mm to 5 mm, for example, it may be 2 mm, 3 mm, or 4 mm, etc. This distance range is a safe avoidance distance, which can prevent the part of the relative recess 311 of the first drying channel 50 from colliding with the first roller 30, and at the same time, it can also make the first drying channel 50 and the first roller 30 relatively compact in spatial arrangement, reduce the proportion of the internal volume of the overall equipment, make the internal structure layout of the equipment reasonable, and improve the overall stability. Moreover, within this distance range, the structural strength of the recess 311 can be guaranteed, and cracks or failures in the front end part of the first roller 30 provided with the recess 311 can be avoided, ensuring the structural reliability of the recess 311.

[0036] Exemplarily, a flange 31 may be installed at the front end of the first roller 30. The flange 31 may be circumferentially provided with mounting holes, and is detachably connected to the first roller 30 through fasteners passing through each mounting hole. The recess 311 may be formed in the area of the front end face of the flange 31 corresponding to the first drying channel 50 to form an avoidance of the first drying channel 50. A door seal 32 may be installed at the front end of the flange 31, that is, the door seal 32 is installed on the first roller 30 through the flange 31 for sealing, and the lid 33 of the first roller 30 may be provided on the front end of the door seal 32. In the embodiments of the present disclosure, the door seal 32 may be elastically sleeved on the outer periphery of the flange 31 and tightened by a wire or the like; alternatively, the door seal 32 may be connected by a clamping method to be described below.

[0037] In the above embodiment, the flange 31 and the door seal 32 may be sequentially installed at the front end of the first roller 30. The first drying channel 50 may communicate with the inner cavity of the first roller 30 through the door seal 32, and the functions of drying and washing can be realized on one roller. When the first drying channel 50 is provided on the door seal 32, the recess 311 may be formed in the area of the front end face of the flange 31 corresponding to the first drying channel 50, so that when the first roller 30 vibrates during operation, it can avoid the vibration of the first drying channel 50 in the front-back direction through the recess 311, prevent the first drying channel 50 from colliding with the flange 31 and generating abnormal noises, reduce the service life, and avoid collisions, which can further improve the overall stability of the equipment.

[0038] Exemplarily, referring to Figure 2, in the lateral direction of the device, the distance between the outer periphery of the flange 31 and the first drying channel 50 can be maintained at 8 mm to 16 mm. For example, it can be 10 mm, 12 mm, or 14 mm, etc., and the recess 311 can be provided at the edge of the flange 31 that is laterally close to the first drying channel 50. In this embodiment, the distance between the outer periphery of the flange 31 and the first drying channel 50 can be maintained within a safe range of 8 mm to 16 mm, which can avoid lateral impact between the first drying channel 50 and the flange 31 and ensure a compact layout. On the basis that the distance between the two is within this safe range, the recess 311 can also be provided at the edge of the flange 31 that is laterally close to the first drying channel 50 to increase the avoidance distance between the first drying channel 50 and the first drum 30 in the vibrating state and avoid collision between the two during vibration. It can be understood that since the distance between the first drying channel 50 and the first drum 30 is relatively close at the kinking part connecting two different directions and the turning angle is relatively large, the possibility of collision with the flange 31 is also relatively large. Therefore, by correspondingly arranging the recess 311 and this part of the first drying channel 50 at the edge of the flange 31, the probability of collision between the two can be prevented and the stability of the internal structure of the device can be improved.

[0039] According to some embodiments, referring to Figure 1 , the first drying channel 50 can be connected to the side of the door seal 32 and can be located between the horizontal axis of the door seal 32 and the top of the door seal 32 in the vertical direction. In this embodiment, the first drying channel 50 is connected to the side of the door seal 32, which does not occupy the top space of the first drum 30, and the connection part of the first drying channel 50 and the first drum 30 in the vertical direction can be located between the horizontal axis of the door seal 32 and the top of the door seal 32, which can keep the first drying channel 50 located in the upper half of the first drum 30. After the air flow for drying clothes enters the first drum 30 from the first drying channel 50, it can continuously dry the clothes more evenly, thereby ensuring the drying effect.

[0040] In other embodiments, the first drying channel 50 can be arranged close to the top of the door seal 32 so that the first drying channel 50 is flush with the top of the door seal 32 or has a small gap, which can reduce the occupation of other structures (such as the water inlet pipe, etc.) in the top space of the door seal 32 and can also avoid collision impact on the water inlet pipe and other structures by the first drying channel 50 during vibration, improving the overall stability of the internal structure of the device.

[0041] In some embodiments, the distance between the top of the first drum 30 and the top of the housing 10 of the laundry treating apparatus may be 30 mm to 39 mm. This distance range can provide a certain installation space for other structures with a relatively small space occupation at the top of the first drum 30 (such as the water inlet pipe, etc.), and can also ensure a safe vibration distance between the first drum 30 and the top structure and the housing 10 of the apparatus during vibration, so as to avoid collisions between the structures within the top space of the first drum 30 and the housing 10, which may cause damage to the apparatus. At the same time, the installation space formed by the top of the first drum 30 within this distance range is relatively small and does not support the installation of the first drying channel 50. If the first drying channel 50 is installed within this space, a drying effect with a preset sufficient air outlet volume cannot be achieved.

[0042] Exemplarily, in combination with Figure 4 and Figure 5 , a ring-shaped slot 321 may be formed circumferentially at the end of the door seal 32. The flange 31 may have an annular clamping arm 312. The annular clamping arm 312 may be inserted into the ring-shaped slot 321 in a shape-matching manner to abut the door seal 32 against the end face of the first drum 30.

[0043] In the above embodiment, a ring-shaped slot 321 structure may be formed at the end of the door seal 32, and the ring-shaped slot 321 may extend radially outward of the door seal 32 and bend to form a groove structure, so that the annular clamping arm 312 formed by the flange 31 can be inserted into the inside of the ring-shaped slot 321 in a shape-matching manner, and the door seal 32 and the flange 31 are positioned and installed on the front end face of the first drum 30. For example, the flange 31 may include an outer ring sleeved circumferentially on the outer periphery of the first drum 30, and the clamping arm 312 is formed at one end of the outer ring and may be configured as an L shape. One side of the L shape extends radially inward from the outer ring, and the other side bends toward the inside of the drum. The slot 321 is configured as a matching L-shaped slot. At the same time, when the annular clamping arm 312 is inserted into the inside of the ring-shaped slot 321, the door seal 32 can be abutted against the end face of the first drum 30, making the positioning of the two firm. For example, a pressing edge is formed on the side of the L-shaped slot close to the inside of the drum, and the pressing edge can be arranged in a fitting manner with the L-shaped clamping arm 312, so that the pressing edge can be pressed between the clamping arm 312 and the front end face of the first drum 30. The zigzag groove structure formed by the pressing edge and the ring-shaped slot 321 can effectively prevent the water flow inside the first drum 30 from seeping into the gap and accumulating, and has a good sealing and waterproof effect.

[0044] According to some embodiments, with reference to Figure 3, a positioning notch 313 may be formed in the inner ring of the flange 31, a positioning lug corresponding to the positioning notch 313 may be formed on the door seal 32, and the positioning lug may be inserted and cooperated with the positioning notch 313. In this embodiment, the positioning notch 313 of the flange 31 can be used to determine the installation direction and position, simplifying the installation process. After the flange 31 is installed on the first drum 30, the door seal 32 can be inserted into the positioning notch 313 through the corresponding positioning lug, strengthening the structural stability after installation.

[0045] Exemplarily, the drum assembly may further include a second drum 20. Referring to Figure 6 , the diameter of the second drum 20 may be larger than that of the first drum 30, and the first drum 30 may be disposed obliquely above the second drum 20. A second drying channel 51 may be connected above the second drum 20, and the second drying channel 51 may be located beside the first drum 30.

[0046] In the above embodiment, the laundry treatment device may have two drums at the same time. The accommodation volumes of the two drums are different, and the first drum 30 with a relatively smaller diameter may have a smaller accommodation volume. The first drum 30 with a smaller volume may be disposed obliquely above the second drum 20 to reasonably arrange the spatial layout of the two drums, lower the center of gravity of the device, and improve the stability of the device. At the same time, a second drying channel 51 may be connected above the second drum 20 to realize the integrated drying and washing function of the second drum 20, and the smaller first drum 30 can utilize the space beside the second drying channel 51 to reasonably utilize the internal space of the device, so as to add a drum in a limited space, make the internal structure layout compact, and reduce the overall space occupied by the device.

[0047] In the above detailed description, reference is made to the accompanying drawings, in which specific aspects in which the present disclosure can be practiced are shown by way of illustration. In this regard, terms indicating directions or representing positional relationships such as "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "circumferential", etc. can be used with reference to the orientation of the described figures. Since the components of the described device can be positioned in a plurality of different orientations, the directional terms can be used for illustrative purposes and are not restrictive. It should be understood that other aspects can be utilized and structural or logical changes can be made without departing from the concept of the present disclosure. Therefore, the following detailed description should not be taken in a limiting sense.

[0048] It should be understood that unless otherwise specifically stated, the features of the various embodiments of the present disclosure described herein can be combined with each other.

[0049] It should be understood that, unless otherwise explicitly specified and limited, the terms "installed", "connected", "connected to", "fixed", etc. used in the embodiments of the present disclosure should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or communicable with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components, unless otherwise explicitly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this article can be understood according to specific circumstances.

[0050] Although terms such as "first" and "second" may be used herein to describe various components, parts, regions, layers or sections, these components, parts, regions, layers or sections are not limited to these terms. On the contrary, these terms are only used to distinguish one component, part, region, layer or section from another. Therefore, without departing from the teachings of the various examples, the first component, part, region, layer or section mentioned in the examples described herein may also be referred to as the second component, part, region, layer or section. Additionally, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description herein, "a plurality" means at least two, such as two, three, etc., unless otherwise explicitly and specifically limited.

[0051] It should be understood that in this article, spatial relative terms such as "above", "upper", "below" and "lower" are used to describe the relationship between one element shown in the figure and another element. In addition to the orientation depicted in the drawings, such spatial relative terms are also intended to encompass different orientations of the device during use or operation. For example, if the device in the drawings is flipped, an element described as "above" or "upper" relative to another element will then be "below" or "lower" relative to that other element. Therefore, depending on the spatial orientation of the device, the term "above" encompasses both the above and below orientations. The device may have other orientations (for example, rotated 90 degrees or in other orientations), and the spatial relative terms used herein should be interpreted accordingly.

[0052] In addition, the word "exemplary" is used herein to mean serving as an example, instance, or illustration. Any aspect or design described herein as "exemplary" is not necessarily to be construed as advantageous over other aspects or designs. Instead, the word exemplary is intended to present concepts in a concrete fashion. As used herein, the term "or" is intended to mean an inclusive "or" rather than an exclusive "or". That is, unless otherwise specified, or clear from the context, "X applies A or B" is intended to mean any of the natural inclusive permutations. That is, if X applies A; X applies B; or X applies both A and B, then "X applies A or B" is satisfied under any one of the foregoing instances. Additionally, unless otherwise specified or clear from the context that points to the singular form, the articles "a" and "an" as used in this application and the appended claims are generally understood to mean "one or more".

[0053] Likewise, although the present disclosure has been shown and described with respect to one or more implementations, equivalent variations and modifications will occur to those skilled in the art upon reading and understanding this specification and the drawings. The present disclosure includes all such modifications and variations and is limited only by the scope of the claims. Specifically with respect to the various functions performed by the components described above (e.g., elements, resources, etc.), unless otherwise indicated, the terms used to describe such components are intended to correspond to any component (functionally equivalent) that performs the specific function of the described component, even if not structurally equivalent to the disclosed structure. Additionally, although a particular feature of the present disclosure may have been disclosed with respect to only one of several implementations, such feature may be combined with one or more other features of other implementations as may be desired and advantageous for any given or particular application. Further, with respect to the use of "comprises", "comprising", "has", "having", "includes", or variants thereof in the detailed description or claims, such terms are intended to be inclusive in a manner similar to the term "including".

[0054] Other embodiments of the present disclosure will be readily apparent to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include known common knowledge or conventional technical means in the technical field not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present disclosure are pointed out by the appended claims.

[0055] It should be understood that the present disclosure is not limited to the exact structures described above and shown in the drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A drum assembly of a laundry treatment device, characterized in that, It includes a first drum and a first drying channel communicating with the inner cavity of the first drum. A recessed portion is provided at the front end of the first drum, and the recessed portion corresponds to the part of the first drying channel located in front of the first drum.

2. The drum assembly according to claim 1, wherein, The first drying channel includes a first section extending laterally, a second section extending in the front-rear direction, and a transition section connecting between the first section and the second section. The recessed portion is disposed opposite to the transition section.

3. The drum assembly according to claim 2, wherein, A door seal is installed at the front end of the first drum, the first drying channel is connected to the door seal, and the first section and the door seal are of an integral structure.

4. The drum assembly according to claim 1, wherein, In the front-rear direction, the distance between the first drying channel and the recessed portion is a first threshold value, and the first threshold value is configured to be greater than the amplitude of the first drying channel moving backward relative to the recessed portion.

5. The drum assembly according to claim 4, characterized in that, The first threshold value is 1 mm to 5 mm.

6. The drum assembly according to claim 1, characterized in that, A flange is installed at the front end of the first drum, a door seal is installed at the front end of the flange, and the recessed portion is formed on the front end face of the flange.

7. The drum assembly according to claim 6, characterized in that, In the lateral direction, the distance between the outer periphery of the flange and the first drying channel is 8 mm to 16 mm, and the recessed portion is provided at the edge of the flange close to the first drying channel in the lateral direction.

8. The drum assembly according to claim 6, characterized in that, The first drying channel is connected to the side of the door seal and is located between the horizontal axis of the door seal and the top of the door seal in the vertical direction.

9. The drum assembly according to claim 8, wherein, The distance between the top of the first drum and the top of the housing of the laundry treatment device is 30 mm to 39 mm.

10. The drum assembly according to claim 6, characterized in that, A ring-shaped clamping groove is formed circumferentially at the end of the door seal. The flange has an annular clamping arm, and the annular clamping arm can be inserted into the ring-shaped clamping groove in a form-fitting manner to abut the door seal against the end face of the first drum.

11. The drum assembly according to claim 6, wherein, A positioning notch is formed in the inner circle of the flange, and a positioning lug corresponding to the positioning notch is formed on the door seal. The positioning lug and the positioning notch are in plug-in fit.

12. The drum assembly according to claim 1, wherein, The drum assembly includes a second drum. The diameter of the second drum is larger than the diameter of the first drum. The first drum is arranged obliquely above the second drum, and a second drying channel is connected above the second drum. The second drying channel is located beside the first drum.

13. A laundry treatment device, characterized in that, It includes a housing and a drum assembly arranged in the housing. The drum assembly is the drum assembly according to any one of claims 1-12.

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