A cleaning-free drum assembly and a drum washing machine

Abstract

The present invention provides a self-cleaning drum assembly and a drum washing machine, including a washing tub and an outer tub. A detachable water flow channel is provided on the inner side wall of the washing tub. The water flow channel is used to discharge the washing water in the washing tub under the drainage or dehydration working conditions. A rotating door body is provided at the front end of the outer tub. The rotating door body includes a first door body and a second door body. The first door body can be assembled with the outer tub, and the second door body can be assembled with the washing tub. The second door body is rotatably provided on the first door body. The second door body is used to block the washing tub, and the second door body can rotate with the washing tub. The self-cleaning drum assembly and the drum washing machine of the present invention have a reasonable structure, improve the cleaning effect of the laundry, facilitate the user to install and disassemble the water flow channel for cleaning, and can greatly improve the user experience effect.

Description

Technical Field

[0001] The present invention relates to the technical field of washing machines, and particularly to a self-cleaning drum assembly and a drum washing machine. Background Art

[0002] Currently, the inner drum of drum washing machines has a porous structure, and the inner drum communicates with the outer drum. There are two problems: First, the water between the outer drum and the inner drum does not participate in washing, resulting in wasted water; Second, over time, serious dirt and mildew spots are generated, causing secondary pollution to the clothes. The dirt in the outer drum enters the inner drum, causing secondary pollution to the clothes. If the inner drum is made into a non-porous drum to keep the water in the inner drum from being lost during the washing state, and an ideal effect can be achieved during drainage and dehydration, this is a technical problem that the current water-saving and environmental protection technology of drum washing machines urgently needs to overcome.

[0003] Existing cleaning methods for the inner and outer drums of drum washing machines include: 1. Flushing the inner drum with water flow to reduce the dirt attached to the inner drum; 2. Regularly using a tank cleaning detergent for chemical cleaning of the washing machine to remove dirt; 3. Making the washing bucket into a detachable structure and removing the washing bucket during cleaning. However, the above water flow flushing method is not clean and thorough; the chemical cleaning method takes a long time and is time-consuming and laborious; the detachable washing bucket method has a relatively complex structure and a poor user experience; 3. During washing and drying, the washing water may splash out from the front side of the inner drum, thus affecting the normal use of electronic components. The splashed washing water is also extremely likely to breed bacteria and mildew in a long-term humid environment, affecting the washing effect of the washing machine; 4. The liquid level height of the washing water in the washing bucket must be lower than the height of the door seal, so the washing machine can only work at a low water level in the washing bucket. Summary of the Invention

[0004] In view of this, the present invention aims to provide a self-cleaning drum assembly and a drum washing machine, which can improve the washing effect of the drum washing machine by adding a rotating door structure to the drum washing machine and providing a detachable water flow channel inside the washing bucket.

[0005] To achieve the above object, the technical solution of the present invention is realized as follows:

[0006] A self-cleaning drum assembly includes a washing bucket and an outer bucket. A detachable water flow channel is provided on the inner side wall of the washing bucket. The water flow channel is used to drain the washing water in the washing bucket under the drainage or dehydration condition. A rotating door body is provided at the front end of the outer bucket. The rotating door body includes a first door body and a second door body. The first door body can be assembled with the outer bucket. The second door body can be assembled with the washing bucket. The second door body is rotatably arranged on the first door body. The second door body is used to block the washing bucket, and the second door body can rotate with the washing bucket.

[0007] Further, the water flow channel is detachably and sealingly connected to the washing tub. The included angle formed by the two ends of the water flow channel and the central axis of the washing tub on the circular projection centered on the central axis of the washing tub is α, and the included angle formed by the two ends of the washing liquid level in the washing tub and the central axis of the washing tub on the circular projection of the washing tub during washing is β, where α ≥ β.

[0008] Further, a drainage structure and a water throwing structure are respectively formed at the two ends of the water flow channel. The drainage structure is used to flow the washing water in the washing tub into the water flow channel, and the drainage structure is arranged inside the washing tub. The water throwing structure is used to direct the washing water in the water flow channel to the outside of the washing tub, and the water throwing structure penetrates through the barrel wall of the washing tub. The drainage structure, the water flow channel, and the water throwing structure form a water flow pipeline structure.

[0009] Further, the first door body and the second door body are concentrically arranged. The second door body is arranged on the first door body through a rotating device and a fixed shaft, and the rotating device is arranged at the center of the circle of the first door body and the second door body.

[0010] Further, a sealing device is arranged at the outer edge of the second door body.

[0011] Further, a water inlet device is arranged on the rotating door body, and the water inlet device is used to inject water into the washing tub through the rotating door body.

[0012] The fixed shaft is a hollow rotating shaft. The water inlet device includes a water inlet pipe, and the water inlet pipe is communicated with the hollow channel of the fixed shaft.

[0013] The water inlet pipe is directly communicated with the fixed shaft or the water inlet pipe is communicated with the fixed shaft through a water inlet passage. The water inlet passage is formed on the first door body or the water inlet passage is formed between the first door body and the second door body.

[0014] Further, a first clamping member is arranged on the water flow channel. The first clamping member penetrates through the washing tub, and a water throwing port is arranged on the first clamping member. The washing water in the washing tub can be discharged from the water throwing port to the outside of the washing tub through the water flow channel. The water flow channel includes a drainage port and a water throwing port. The drainage port is used to flow the washing water in the washing tub into the inside of the water flow channel, and the water throwing port is used to direct the washing water inside the water flow channel to the outside of the washing tub. A first clamping buckle is arranged on the water flow channel, and the first clamping buckle is arranged at one end of the water flow channel close to the drainage port of the water flow channel. The first clamping buckle is used for clamping connection with the inner surface of the washing tub. A second clamping member is arranged at the other end of the water flow channel, and the second clamping member can be fixedly connected with a water throwing part clamping member arranged on the inner wall of the washing tub.

[0015] Further, the end cross-section of the water flow channel near the drainage structure is larger than the end cross-section of the water flow channel near the water throwing structure.

[0016] Furthermore, a water diverter is provided inside the washing tub, a first chamber is provided inside the water diverter, the water flow channel is connected to the first chamber inside the water diverter, a water diverter water inlet hole is provided on the water diverter, and the water diverter water inlet hole is used to flow the washing water in the washing tub to the first chamber.

[0017] The present invention also discloses a drum washing machine, comprising any one of the above-mentioned wash-free drum components.

[0018] Compared with the prior art, the wash-free drum assembly and drum washing machine of the present invention have the following advantages:

[0019] (1) The wash-free drum assembly and drum washing machine of the present invention, by means of a detachable water flow channel and a rotating door body provided at the front end of the washing tub, ensure that the washing tub with the water flow channel that rotates unidirectionally does not leak or splash water during washing operation, and discharges the washing water in the washing tub during drainage and dehydration operations, thereby preventing the washing water from flowing back and forth between the inner and outer tubs to cause secondary pollution. At the same time, it also perfectly solves a series of sealing problems caused by factors such as the instability of the sliding seal and the shaking of the washing tub when the water flow space of the isolation channel rotates in the washing tub.

[0020] (2) The wash-free drum assembly and drum washing machine of the present invention, by setting the water channel inside the washing barrel and fixing it to the washing barrel in a detachable manner, and setting α≧β on the water channel, the drum washing machine of the present invention completes the washing condition or the drainage condition and the dehydration condition through unidirectional rotation. The washing machine rotates unidirectionally in the washing condition, the drainage condition and the dehydration condition. The clockwise direction formed from the connection between the water channel and the washing barrel to the end of the water channel is the same as the clockwise direction of the washing barrel when washing, and the rotation direction of the washing barrel in the washing condition is opposite to the rotation direction of the washing barrel in the drainage condition, and the rotation direction of the washing barrel in the drainage condition is the same as the rotation direction of the washing barrel in the dehydration condition. The washing barrel does not leak in the washing condition, and the washing water in the washing barrel is discharged in the drainage condition and the dehydration condition, so as to avoid the washing water flowing back and forth between the inner and outer barrels to cause secondary pollution. At the same time, it also perfectly solves a series of sealing problems caused by factors such as the instability of the sliding seal and the shaking of the washing barrel when the water space of the isolation channel rotates.

[0021] (3) The present invention has a reasonable structure, improves the cleaning effect of the laundry, and is convenient for users to install and disassemble the water flow channel for cleaning, which can greatly improve the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings that form a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0023] Figure 1 It is a schematic side view of the open state of the rotating door body of the self-cleaning drum assembly according to an embodiment of the present invention;

[0024] Figure 2 It is a schematic front view of the open state of the rotating door body of the self-cleaning drum assembly according to an embodiment of the present invention;

[0025] Figure 3 is Figure 2 the schematic cross-sectional view of A-A in

[0026] Figure 4 It is a schematic side view of the closed state of the rotating door body of the self-cleaning drum assembly according to an embodiment of the present invention;

[0027] Figure 5 It is a schematic view of the separated state of the rotating door body and the barrel body of the self-cleaning drum assembly according to an embodiment of the present invention;

[0028] Figure 6 It is an exploded view of the rotating door body according to an embodiment of the present invention;

[0029] Figure 7 It is a schematic diagram defining the working principle of the drum washing machine according to an embodiment of the present invention;

[0030] Figure 8 It is a schematic front view structure diagram of the washing barrel according to an embodiment of the present invention;

[0031] Figure 9 It is a schematic side view structure diagram of the washing barrel according to an embodiment of the present invention;

[0032] Figure 10 It is a schematic side view structure diagram of the second washing barrel according to an embodiment of the present invention;

[0033] Figure 11 It is a schematic front view structure diagram of the third washing barrel according to an embodiment of the present invention;

[0034] Figure 12 It is a schematic structure diagram of the water flow channel according to an embodiment of the present invention;

[0035] Figure 13 is Figure 12 the enlarged view of the partial structure in

[0036] Figure 14 It is a schematic structure diagram of the water flow channel from the second perspective according to an embodiment of the present invention;

[0037] Figure 15 Schematic structural diagram of the second water flow channel according to an embodiment of the present invention;

[0038] Figure 16 Schematic structural diagram of the third water flow channel according to an embodiment of the present invention;

[0039] Figure 17 Schematic structural diagram of the self - cleaning drum washing machine with water inlet from the rear end according to an embodiment of the present invention;

[0040] Figure 18 Another schematic structural diagram of the water inlet of the self - cleaning drum washing machine according to an embodiment of the present invention;

[0041] Explanation of reference numerals:

[0042] 1 - First door body, 11 - Fixed shaft, 12 - First flanging, 13 - Lock, 14 - Hinge, 15 - Handle, 16 - Water inlet channel, 2 - Second door body, 21 - Through hole, 22 - Sealing device, 3 - Outer tub, 31 - First outer tub, 32 - Second outer tub, 33 - Second flanging, 4 - Washing tub, 5 - Rotating device, 51 - Spacer, 52 - Bearing, 6 - Rotating door body, 7 - Water inlet pipe, 8 - Water flow channel, 801 - Drainage structure, 801a - First buckle, 801b - Drainage port, 801c - Water diversion part, 802 - Water throwing structure, 802a - First clamping part, 802b - Second clamping part, 802c - Water throwing port, 9 - Water deflecting rib, 901 - First chamber, 902 - Water deflecting rib water inlet hole, 10 - Central rotating shaft. Detailed implementation manners

[0043] In order to make the technical means, objectives and effects of the present invention easy to understand, the embodiments of the present invention will be described in detail below with reference to specific drawings.

[0044] It should be noted that all the terms indicating directions and positions in the present invention, such as: "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", "top", "bottom", "lateral", "longitudinal", "center", etc., are only used to explain the relative position relationship and connection situation between components in a certain specific state (as shown in the drawings), and are only for the convenience of describing the present invention, rather than requiring the present invention to be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation to the present invention. In addition, the descriptions involving "first", "second", etc. in the present invention are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features.

[0045] In the description of the present invention, unless otherwise clearly defined and limited, the terms "installed", "connected", and "connected" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0046] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0047] The present invention will be described in detail below with reference to the drawings and in combination with embodiments.

[0048] As Figures 1 to 9 , Figures 12 to 14 shown, the present invention discloses a drum assembly that does not require cleaning, including a washing tub 4 and an outer tub 3. The washing tub 4 and the outer tub 3 are concentrically arranged. A detachable water flow channel 8 is provided on the inner side wall of the washing tub 4. The water flow channel 8 is used to discharge the washing water in the washing tub 4 under the drainage or dehydration conditions. A rotating door body 6 is provided at the front end of the outer tub 3. The rotating door body 6 includes a first door body 1 and a second door body 2. The first door body 1 can be assembled with the outer tub 3. The second door body 2 can be assembled with the washing tub 4. The second door body 2 is rotatably arranged on the first door body 1. The second door body 2 is used to block the washing tub 4. The second door body 2 can rotate with the washing tub 4.

[0049] Preferably, the water flow channel 8 is detachably and sealingly connected to the washing tub 4. The included angle formed by the two ends of the water flow channel 8 and the central axis of the washing tub on the circular projection with the central axis of the washing tub 4 as the center of the circle is α. The included angle formed by the two ends of the washing liquid level in the washing tub 4 during washing and the central axis of the washing tub on the circular projection of the washing tub 4 is β. α≥β.

[0050] Furthermore, the second door body 2 is arranged on the first door body 1 through a rotating device 5.

[0051] The present invention is provided with a detachable water flow channel inside the washing tub, and a structure where α≥β is set. Under the washing condition, the washing tub rotates unidirectionally, and the clockwise direction formed by the connection between the water flow channel and the washing tub to the end of the water flow channel is the same as the clockwise direction of the washing tub during washing. At this time, the washing water in the washing tub will not flow out from the water flow channel. Under the washing condition, the washing tub rotates unidirectionally in the clockwise direction opposite to that during the washing condition. At this time, the washing water in the washing tub will flow out through the water flow channel. At the same time, by providing a rotating door body at the front end of the outer tub, when the rotating door body of the drum washing machine is closed, the first door body is fixed on the outer tub, and the second door body cooperates with the washing tub. When the washing machine operates, the second door body is fixed on the first door body. Through the rotating device between the first door body and the second door body, the second door body rotates with the washing tub. Since the second door body completely seals the washing tub, the water level of the washing water in the washing tub can be freely adjusted, breaking through the limitation in traditional drum washing machines that the washing water level must be lower than the door seal. During washing and rinsing, a large amount of washing water can be stored and placed in the washing tub 4, solving the disadvantage in the prior art that drum washing machines need to drain water and rinse multiple times, and improving the washing efficiency of drum washing machines.

[0052] Preferably, drainage structures 801 and water throwing structures 802 are respectively formed at both ends of the water flow channel 8. The drainage structure 801 is used to flow the washing water in the washing tub 4 into the water flow channel 8. The drainage structure 801 is arranged inside the washing tub. The water throwing structure 802 is used to flow the washing water in the water flow channel 8 to the outside of the washing tub 4. The water throwing structure 802 penetrates the barrel wall of the washing tub 4. The drainage structure 801, the water flow channel 8, and the water throwing structure 802 form a water flow pipeline structure. This setting discloses a setting structure of the water flow channel, ensuring the reliability that the washing water inside the washing tub does not flow during the washing condition and drains outward during the dehydration and drainage conditions.

[0053] The first door body 1 and the second door body 2 are concentrically arranged. The second door body 2 is arranged on the first door body 1 through a rotating device 5 and a fixed shaft 11. The rotating device 5 is arranged at the center of the circle of the first door body 1 and the second door body 2.

[0054] The first door body 1 is provided with a fixed shaft 11, and the second door body 2 is provided with a through hole 21, or the second door body 2 is provided with a fixed shaft 11, and the first door body 1 is provided with a through hole 21; the through hole 21 passes through the fixed shaft 11, and the second door body 2 rotates on the fixed shaft 11 through the through hole 21.

[0055] Preferably, both the first door body 1 and the second door body 2 are circular, and the radius of the second door body 2 is smaller than that of the first door body 1.

[0056] Specifically, a fixed shaft 11 is provided on the first door body 1, a through hole 21 is provided on the second door body 2, and a rotating device 5 is arranged in the through hole 21. The second door body 2 is sleeved on the fixed shaft 11 through the rotating device 5 and rotates.

[0057] Preferably, the rotating device 5 includes a gasket 51 and a bearing 52. The outer ring of the bearing 52 is fixedly connected to the second door body 2, the inner ring of the bearing 52 is fixedly connected to the fixed shaft 11, and the gasket 51 is arranged between the first door body 1 and the second door body 2. At this time, when the second door body 2 rotates, the gasket 51 keeps the rotating plane where the second door body 2 is located in the same plane without deviation, avoiding friction or damage to the first door body 1 when the second door body 2 rotates.

[0058] To improve the rotating effect of the rotating door body structure, a certain distance gap is provided between the first door body 1 and the second door body 2, so that when the second door body 2 rotates on the first door body 1, only friction is generated between the rotating devices 5; preferably, the first door body 1 and the second door body 2 can also be hermetically arranged, and a layer of lubricating oil is provided between the two to improve the rotation of the second door body 2.

[0059] Preferably, a sealing device 22, such as a sealing strip, is provided at the outer edge of the second door body 2. When the rotating door body 6 is closed, the second door body 2 blocks the washing tub 4, and the sealing strip can improve the sealing performance between the two, avoiding the leakage or outflow of washing water from the washing tub 4 during the operation of the drum washing machine.

[0060] Preferably, the width of the sealing device 22 gradually increases from the second door body 2 to the first door body 1 direction. The second door body 2 and the sealing device 22 together form a frustum-shaped structure. When the rotating door body 6 is closed, the sealing device 22 can provide a larger contact area with the washing tub 4, further improving the sealing performance between the second door body 2 and the washing tub 4.

[0061] Furthermore, a first flanging 12 is provided on the first door body 1, the first flanging 12 protrudes towards the washing tub 4 side, and a second flanging 33 is provided on the lid of the outer tub 3, the second flanging 33 protrudes towards the side close to the first door body 1.

[0062] When the rotating door body 6 is closed, the first flanging 12 cooperates with the second flanging 33, and the inner circle diameter of the first flanging 12 is equal to or slightly larger than the outer circle diameter of the second flanging 33. When the first door body 1 is closed, the first flanging 12 and the second flanging 33 are closely fitted. This setting increases the sealing performance between the first door body 1 and the outer tub 3, which can not only prevent the washing water from leaking out of the washing machine during the operation of the washing tub 4, but also reduce the noise generated during the operation of the drum washing machine.

[0063] Further, a hinge 14 is provided on the first door body 1. At the other end of the hinge 14, a latch 13 is provided on the first door body 1. The first door body 1 and the outer tub 3 are opened or closed by means of hinging and latching. When the drum washing machine is running, the latch 13 fixes the first door body 1 to the outer tub 3. At this time, the rotating door body 6 of the washing machine cannot be opened. When the washing is finished, the latch 13 is opened. At this time, the rotating door body 6 can be opened for the next operation of the drum washing machine.

[0064] Preferably, a handle 15 is provided on the first door body 1. When the user needs to open the drum washing machine, an external force is applied to the handle 15 to open the latch 13, and the rotating door body 6 is opened for the user to use.

[0065] Further, a water inlet device is provided on the rotating door body 6. The water inlet device is used to inject water into the washing tub 4 through the rotating door body 6.

[0066] The fixed shaft is a hollow rotating shaft. The water inlet device includes a water inlet pipe, and the water inlet pipe is communicated with the hollow channel of the fixed shaft.

[0067] Preferably, the water inlet pipe 7 can also be directly connected to the hollow fixed shaft 11. The water inlet mode of the washing machine is simple and direct, which is convenient for use.

[0068] Alternatively, the water inlet pipe 7 is directly communicated with the fixed shaft 11 or the water inlet pipe 7 is communicated with the fixed shaft 11 through a water inlet passage 16. The water inlet passage 16 is formed on the first door body 1 or the water inlet passage 16 is formed between the first door body 1 and the second door body 2.

[0069] Preferably, a water inlet pipe 7 is provided on the first door body 1. The water inlet pipe 7 is communicated with an external water guide pipe. An water inlet passage 16 is provided on the first door body 1. The water inlet pipe 7 is communicated with the water inlet passage 16. The first door body 1 and the second door body 2 are concentrically arranged. The fixed shaft 11 provided on the first door body 1 is a hollow rotating shaft. The water inlet passage 16 is connected to the fixed shaft 11. Water flows from the water inlet pipe 7 through the water inlet passage 16 and then enters the hollow channel of the fixed shaft 11 to reach the washing tub 4 for water injection.

[0070] The first door body 1 can also be of an internally hollow structure. The water inlet passage 16 is arranged between the hollow first door bodies 1 to achieve water inlet while also ensuring the aesthetics of the rotating door body 6.

[0071] Preferably, the water inlet pipe 7 is provided at the hinge 14 of the first door body 1. When the rotating door body 6 is opened or closed, the position of the water inlet pipe 7 is fixed, which is convenient for water flow. The water inlet passage 16 is provided on the first door body 1. One end of it is communicated with the water inlet pipe 7, and the other end is communicated with the fixed shaft 11 at the center of the first door body 1.

[0072] Preferably, the water inlet channel 16 is hidden between the first door body 1 and the second door body 2. A groove is provided between the first door body 1 and the second door body 2 to accommodate the water inlet channel 16. The side of the first door body 1 facing the user is flat, making the appearance of the rotating door body 6 beautiful and generous.

[0073] To facilitate the installation between the washing tub 4 and the outer tub 3, the outer tub 3 is set as a first outer tub 31 and a second outer tub 32 that can be disassembled and combined. When installing the washing tub 4, the first outer tub 31 and the second outer tub 32 can be installed successively, facilitating the production of the drum washing machine.

[0074] As an example of the present invention, a first clamping member 802a is provided on the water flow channel 8. The first clamping member 802a passes through the washing tub 4. A water throwing port 802c is provided on the first clamping member 802a. The washing water in the washing tub can be discharged to the outside of the washing tub 4 through the water flow channel 8 from the water throwing port 802c. The water flow channel 8 includes a drain port 801b and a water throwing port 802c. The drain port 801b is used to allow the washing water in the washing tub to flow into the interior of the water flow channel 8, and the water throwing port 802c is used to direct the washing water inside the water flow channel 8 to the outside of the washing tub. A first buckle 801a is provided on the water flow channel 8. The first buckle 801a is provided at one end of the water flow channel 8 close to the drain port 801b of the water flow channel. The first buckle 801a is used for snap connection with the inner surface of the washing tub 4. A second clamping member 802b is provided at the other end of the water flow channel 8. The second clamping member 802b can be fixedly connected to a water throwing part clamping member provided on the inner wall of the washing tub. This setting discloses a detachable structure of the water flow channel, facilitating the user to disassemble the water flow channel from the inside of the washing tub for cleaning, and avoiding secondary pollution of the laundry caused by dirt in the water flow channel.

[0075] A water guiding part 801c is provided on the water flow channel 8. The water guiding part 801c is provided on one side of the drainage structure 801. The water guiding part 801c is arc-shaped. This setting facilitates the water guiding part 801c to guide the washing water in the washing tub to the drainage structure 801 when the washing tub rotates.

[0076] The present invention realizes washing and drainage respectively through the one-way continuous rotation of the washing tub. When the rotation direction of the washing tub 4 is the same as the setting directions of the drainage structure 801 of the water flow pipeline, the water flow channel 8 and the water throwing structure 802 on the washing tub, it is in the washing working condition at this time; when the rotation direction of the washing tub 4 is opposite to the setting directions of the drainage structure 801 of the water flow pipeline, the water flow channel 8 and the water throwing structure 802 on the washing tub, it is in the drainage working condition and the dehydration working condition at this time.

[0077] That is, when the drainage structure 801, the water flow channel 8, and the water throwing structure 802 of the water pipeline are arranged clockwise on the washing tub, the washing tub rotates counterclockwise for the drainage condition and the dehydration condition, and the washing tub rotates clockwise for the washing condition.

[0078] Preferably, the included angle α formed by the two ends of the water flow channel 8 and the central axis of the washing tub on the circular projection of the washing tub 4 ranges from 90° to 360°, preferably from 100° to 180°, and α > β.

[0079] Embodiment 2, as Figure 10 、 Figure 15 shown, the present invention discloses a second type of drum assembly that can be cleaned without cleaning. The end cross-section of the water flow channel 8 near the drainage structure 801 is larger than the end cross-section of the water flow channel 8 near the water throwing structure 802. The cross-section of the water flow channel 8 is arranged to gradually decrease from the end near the drainage structure 801 to the end near the water throwing structure 802, and other structures are the same as those in Embodiment 1. This setting discloses a second type of washing tub with a detachable water flow channel, which is convenient for discharging the washing water in the washing tub.

[0080] Preferably, multiple water flow channels 8 can be provided.

[0081] As some examples of the present invention, the water flow channel 8 is arranged in a spiral shape. Specifically, the spiral-shaped water flow channel 8 means that the centers of the two ends of the water flow channel 8 are not on the same circumference with the central axis of the washing tub as the center of the circle. The included angle formed by the two ends of the water flow channel 8 and the central axis of the washing tub on the circular projection with the central axis of the washing tub 4 as the center of the circle is α, and the included angle formed by the two ends of the washing liquid level in the washing tub 4 and the central axis of the washing tub on the circular projection of the washing tub 4 during washing is β, and α ≥ β.

[0082] Embodiment 3, as Figure 11 、 Figure 16 shown, the present invention discloses a third type of drum assembly that can be cleaned without cleaning. A water deflecting rib 9 is arranged inside the washing tub 4, and a first chamber 901 is arranged inside the water deflecting rib 9. The water flow channel 8 is communicated with the first chamber 901 inside the water deflecting rib 9, and a water deflecting rib water inlet hole 902 is arranged on the water deflecting rib 9. The water deflecting rib water inlet hole 902 is used to direct the washing water in the washing tub into the first chamber 901. This setting discloses a third type of washing tub with a detachable water flow channel, and other structures are the same as those in other embodiments.

[0083] Preferably, the water flow channel 8 is detachably connected to the water deflecting rib 9.

[0084] Furthermore, the water flow channel 8 and the water deflecting rib 9 are integrally formed, and the water deflecting rib 9 is detachably connected to the washing tub 4.

[0085] Example 4. This example discloses another self-cleaning drum assembly. On the basis of other examples, this example improves the position of the water inlet device on the washing tub 4.

[0086] As Figures 17 to 18 shown, the rear end of the washing tub 4 is connected to the power input device of the drum washing machine. The central rotating shaft 10 of the drum washing machine has an internally hollow channel. The water inlet device is connected to the central rotating shaft 10, and water enters the washing tub 4 from the central rotating shaft 10 for washing.

[0087] As some examples of the present invention, the water inlet mode of the water inlet device into the washing tub includes the mode of water inlet into the washing tub from the front rotating door body and / or the mode of the water inlet device entering water into the washing tub from the rear end of the washing tub.

[0088] Example 5. The present invention discloses a drum washing machine, including any one of the above self-cleaning drum assemblies.

[0089] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A drum assembly that requires no cleaning, characterized in that, It includes a washing tub (4) and an outer tub (3). A detachable water flow channel (8) is provided on the inner side wall of the washing tub (4). The water flow channel (8) is used to discharge the washing water in the washing tub (4) under the drainage or dehydration working conditions. A rotating door body (6) is provided at the front end of the outer tub (3). The rotating door body (6) includes a first door body (1) and a second door body (2). The first door body (1) can be assembled with the outer tub (3). The second door body (2) can be assembled with the washing tub (4). The second door body (2) is rotatably arranged on the first door body (1). The second door body (2) is used to block the washing tub (4). The second door body (2) can rotate with the washing tub (4); The water flow channel (8) is detachably and sealingly connected to the washing tub (4). The included angle formed by the two ends of the water flow channel (8) and the central axis of the washing tub on the circular projection with the central axis of the washing tub (4) as the center of the circle is α. When the washing machine is washing, the included angle formed by the two ends of the washing liquid level in the washing tub (4) and the central axis of the washing tub on the circular projection of the washing tub (4) is β. α≥β, and the value range of α is 90°~360°; The washing tub does not leak water during the washing working condition; Drainage structures (801) and water throwing structures (802) are respectively formed at the two ends of the water flow channel (8). The drainage structure (801) is used to flow the washing water in the washing tub (4) into the water flow channel (8). The drainage structure (801) is arranged inside the washing tub. The water throwing structure (802) is used to flow the washing water in the water flow channel (8) to the outside of the washing tub (4). The water throwing structure (802) penetrates through the barrel wall of the washing tub (4). The drainage structure (801), the water flow channel (8), and the water throwing structure (802) form a water flow pipeline structure; A first clamping member (802a) is provided on the water flow channel (8). The first clamping member (802a) passes through the washing tub (4). A water throwing port (802c) is provided on the first clamping member (802a). The washing water in the washing tub can be discharged from the water throwing port (802c) to the outside of the washing tub (4) through the water flow channel (8). The water flow channel (8) includes a drainage port (801b) and a water throwing port (802c). The drainage port (801b) is used to flow the washing water in the washing tub into the inside of the water flow channel (8). The water throwing port (802c) is used to flow the washing water inside the water flow channel (8) to the outside of the washing tub. A first buckle (801a) is provided on the water flow channel (8). The first buckle (801a) is arranged at one end of the water flow channel (8) close to the drainage port (801b) of the water flow channel. The first buckle (801a) is used for clamping connection with the inner surface of the washing tub (4). A second clamping member (802b) is provided at the other end of the water flow channel (8). The second clamping member (802b) can be fixedly connected with the water throwing part clamping member arranged on the inner wall of the washing tub.

2. The drum assembly that requires no cleaning according to claim 1, characterized in that, The first door body (1) and the second door body (2) are concentrically arranged. The second door body (2) is arranged on the first door body (1) through a rotating device (5) and a fixed shaft (11), and the rotating device (5) is arranged at the center of the circle of the first door body (1) and the second door body (2).

3. The drum assembly that requires no cleaning according to claim 2, characterized in that, A water inlet device is arranged on the rotating door body (6), and the water inlet device is used for injecting water into the washing tub (4) through the rotating door body (6).

4. The drum assembly that requires no cleaning according to claim 3, characterized in that, The fixed shaft (11) is a hollow rotating shaft. The water inlet device includes a water inlet pipe (7), and the water inlet pipe (7) is communicated with the hollow channel of the fixed shaft (11).

5. The drum assembly that requires no cleaning according to claim 4, characterized in that, The water inlet pipe (7) is directly communicated with the fixed shaft (11) or the water inlet pipe (7) is communicated with the fixed shaft (11) through a water inlet passage (16). The water inlet passage (16) is formed on the first door body (1) or the water inlet passage (16) is formed between the first door body (1) and the second door body (2).

6. The drum assembly that requires no cleaning according to claim 5, characterized in that, A water deflecting rib (9) is arranged inside the washing tub (4), and a first chamber (901) is arranged inside the water deflecting rib (9). The flowing water channel (8) is communicated with the first chamber (901) inside the water deflecting rib (9). A water deflecting rib water inlet hole (902) is arranged on the water deflecting rib (9), and the water deflecting rib water inlet hole (902) is used for flowing the washing water in the washing tub into the first chamber (901).

7. A drum washing machine, characterized in that, Comprising a self-cleaning drum assembly according to any one of claims 1 to 6.

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