A drum washing machine that does not require cleaning

Abstract

The present invention provides a drum washing machine that does not require cleaning, including a washing tub and an outer tub. A water flow channel is provided on the washing tub, and the water flow channel rotates integrally with the washing tub. 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. In the drum washing machine without cleaning according to the present invention, by providing the water flow channel and the rotating door body, the sealing performance of the washing tub in the washing condition and the drainage condition is improved, the probability of the washing water in the drum washing machine flowing between the inner and outer tubs is reduced or even eliminated, and the cleanliness of the laundry is improved.

Description

Technical Field

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

[0002] Currently, drum washing machines all have a structure with holes in the inner tub. The inner tub communicates with the outer tub. There are two problems: First, the water between the outer tub and the inner tub 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 tub enters the inner tub, causing secondary pollution to the clothes. If the inner tub is made into a tub without holes, the water in the inner tub can be kept 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 tub and outer tub of drum washing machines are as follows: 1. Flushing the inner tub with water flow to reduce the dirt attached to the inner tub; 2. Regularly using a tank cleaning detergent for chemical cleaning of the washing machine to remove dirt; 3. Making the washing tub into a detachable structure and removing the washing tub during cleaning. However, the above-mentioned 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 tub 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 tub, thus affecting the normal use of electronic components. The splashed washing water is also extremely prone to breeding bacteria and mildew in a long-term humid environment, affecting the washing effect of the washing machine; 4. The liquid level of the washing water in the washing tub must be lower than the height of the door seal. Therefore, the washing machine can only work at a low water level in the washing tub. Summary of the Invention

[0004] In view of this, the present invention aims to provide a drum washing machine with self-cleaning function, which improves the washing effect of the drum washing machine by adding a rotating door structure and a water flow channel structure to the drum washing machine.

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

[0006] A drum washing machine with self-cleaning function includes a washing tub and an outer tub. A water flow channel is provided on the washing tub, and the water flow channel rotates integrally with the washing tub. A rotating door is provided at the front end of the outer tub. The rotating door includes a first door body and a second door body. The first door body can be assembled with the outer tub. 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.

[0007] Further, one end of the water flow channel communicates with the inside of the washing tub, and the other end of the water flow channel is arranged outside the washing tub. The washing water in the washing tub can be discharged to the outside of the washing tub through the water flow channel. 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 with the central axis of the washing tub as the center of the circle is α, and the included angle formed by the two ends of the washing water surface in the washing tub and the central axis of the washing tub on the circular projection of the washing tub 1 during washing of the washing machine is β, and α≥β.

[0008] Further, the second door body is arranged on the first door body through a rotating device.

[0009] Further, a fixed shaft is arranged on the first door body, a through hole is arranged on the second door body, and the rotating device is arranged in the through hole. The second door body is sleeved on the fixed shaft through the rotating device and rotates.

[0010] Further, the first door body and the second door body are concentrically arranged, and the rotating device is arranged at the center of the circle of the first door body and the second door body.

[0011] Further, a sealing device is arranged at the outer edge of the second door body.

[0012] Further, for the sealing device, in the direction from the second door body to the first door body, its width gradually increases, and the second door body and the sealing device form a frustum-shaped structure.

[0013] 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.

[0014] The fixed shaft is a hollow rotating shaft, and the water inlet device includes a water inlet pipe, and the water inlet pipe communicates with the hollow channel of the fixed shaft.

[0015] 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, and 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.

[0016] Further, the washing tub includes a washing tub front plate, a washing tub circumference, and a washing tub rear plate, and the water flow channel is arranged on any one or more of the washing tub front plate, the washing tub circumference, and the washing tub rear plate.

[0017] Furthermore, a spiral water flow channel is arranged on the circumference of the washing tub. The spiral water flow channel is arranged in a spiral shape. One end of the spiral water flow channel is communicated with the inside of the washing tub, and the other end of the spiral water flow channel is arranged outside the washing tub. The included angle formed by the two ends of the spiral water flow channel and the central axis of the washing tub on the circular projection with the central axis of the washing tub as the center of the circle is α, and the included angle formed by the two ends of the washing water surface in the washing tub and the central axis of the washing tub on the circular projection of the washing tub during the washing of the washing machine is β, and α≥β.

[0018] Compared with the prior art, the self-cleaning drum washing machine of the present invention has the following advantages:

[0019] (1) For the self-cleaning drum washing machine of the present invention, through the arranged water flow channel and the rotating door body, the problem of secondary pollution caused by the washing water flowing between the inner and outer tubs to the clothes to be washed during the washing of the drum washing machine in the prior art is solved. The rotating door body structure rotates the two door bodies together, improving the sealing performance between the rotating door body and the tub structure (washing tub and outer tub), reducing and even eliminating the probability of the washing water in the drum washing machine flowing between the inner and outer tubs, and improving the cleanliness of the clothes to be washed.

[0020] (2) The setting of α≥β on the water flow channel enables the drum washing machine of the present invention to complete the washing condition, drainage condition, and dehydration condition through one-way rotation. The washing machine rotates in one direction under the washing condition, drainage condition, and dehydration condition. The clockwise direction formed from the connection of 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, and the rotation direction of the washing tub under the washing condition is opposite to the rotation direction of the washing tub under the drainage condition, and the rotation direction of the washing tub under the drainage condition is the same as the rotation direction of the washing tub under the dehydration condition. The washing tub does not leak water under the washing condition, and discharges the washing water in the washing tub under the drainage condition and dehydration condition, avoiding the back-and-forth flow of the washing water between the inner and outer tubs and causing secondary pollution. At the same time, it also perfectly solves a series of sealing problems caused by the instability of the sliding seal and the shaking of the washing tub and other factors in the flowing water space similar to the isolation channel when the washing tub rotates. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting 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 to the present invention. In the drawings:

[0022] Figure 1 is a schematic structural diagram of a washing tub with a water flow channel according to an embodiment of the present invention;

[0023] Figure 2Schematic structural diagram of state A of one-way rotation of the washing tub with a water flow channel in the drainage and dehydration states according to an embodiment of the present invention;

[0024] Figure 3 Schematic structural diagram of state B of one-way rotation of the washing tub with a water flow channel in the drainage and dehydration states according to an embodiment of the present invention;

[0025] Figure 4 Schematic structural diagram of state C of one-way rotation of the washing tub with a water flow channel in the drainage and dehydration states according to an embodiment of the present invention;

[0026] Figure 5 Schematic structural diagram of state D of one-way rotation of the washing tub with a water flow channel in the drainage and dehydration states according to an embodiment of the present invention;

[0027] Figure 6 Schematic structural diagram of state E of one-way rotation of the washing tub with a water flow channel in the washing state according to an embodiment of the present invention;

[0028] Figure 7 Schematic structural diagram of state F of one-way rotation of the washing tub with a water flow channel in the washing state according to an embodiment of the present invention;

[0029] Figure 8 Schematic structural diagram of state G of one-way rotation of the washing tub with a water flow channel in the washing state according to an embodiment of the present invention;

[0030] Figure 9 Schematic structural diagram of state H of one-way rotation of the washing tub with a water flow channel in the washing state according to an embodiment of the present invention;

[0031] Figure 10 Schematic structural diagram of state I of one-way rotation of the washing tub with a water flow channel in the second drainage and dehydration states according to an embodiment of the present invention;

[0032] Figure 11 Schematic structural diagram of state J of one-way rotation of the washing tub with a water flow channel in the second drainage and dehydration states according to an embodiment of the present invention;

[0033] Figure 12 Schematic structural diagram of state K of one-way rotation of the washing tub with a water flow channel in the second drainage and dehydration states according to an embodiment of the present invention;

[0034] Figure 13 Schematic structural diagram of state L of one-way rotation of the washing tub with a water flow channel in the second drainage and dehydration states according to an embodiment of the present invention;

[0035] Figure 14Schematic structural diagram of the M state of unidirectional rotation in the second washing state of the washing tub with a water flow channel according to an embodiment of the present invention;

[0036] Figure 15 Schematic structural diagram of the N state of unidirectional rotation in the second washing state of the washing tub with a water flow channel according to an embodiment of the present invention;

[0037] Figure 16 Schematic structural diagram of the O state of unidirectional rotation in the second washing state of the washing tub with a water flow channel according to an embodiment of the present invention;

[0038] Figure 17 Schematic structural diagram of the P state of unidirectional rotation in the second washing state of the washing tub with a water flow channel according to an embodiment of the present invention;

[0039] Figure 18 Schematic structural definition diagram of the working principle of the drainage method of the drum washing machine according to an embodiment of the present invention;

[0040] Figure 19 Front view structural schematic diagram of the upper water channel of the washing tub with a water flow channel according to an embodiment of the present invention;

[0041] Figure 20 Left view structural schematic diagram of the upper water channel of the washing tub with a water flow channel according to an embodiment of the present invention;

[0042] Figure 21 Right view structural schematic diagram of the upper water channel of the washing tub with a water flow channel according to an embodiment of the present invention;

[0043] Figure 22 Side view structural schematic diagram of the upper water channel of the washing tub with a water flow channel according to an embodiment of the present invention;

[0044] Figure 23 Front view structural schematic diagram of the upper water flow channel of the washing tub with a water flow channel according to an embodiment of the present invention;

[0045] Figure 24 Left view structural schematic diagram of the upper water flow channel of the washing tub with a water flow channel according to an embodiment of the present invention;

[0046] Figure 25 Right view structural schematic diagram of the upper water flow channel of the washing tub with a water flow channel according to an embodiment of the present invention;

[0047] Figure 26 Side view structural schematic diagram of the upper water flow channel of the washing tub with a water flow channel according to an embodiment of the present invention;

[0048] Figure 27Schematic side view structure of the washing tub with a water flow channel according to an embodiment of the present invention;

[0049] Figure 28 Schematic side view structure of the circumferential water guide groove of the washing tub according to an embodiment of the present invention;

[0050] Figure 29 Schematic side view structure of the circumferential top plate of the washing tub according to an embodiment of the present invention;

[0051] Figure 30 Schematic side view structure of the end water guide groove of the washing tub according to an embodiment of the present invention;

[0052] Figure 31 Schematic right view structure of the end water guide groove of the washing tub according to an embodiment of the present invention;

[0053] Figure 32 Schematic structure of the spiral water flow channel of the washing tub according to an embodiment of the present invention;

[0054] Figure 33 Schematic structure of the second spiral water flow channel of the washing tub according to an embodiment of the present invention;

[0055] Figure 34 Schematic structure of the third spiral water flow channel of the washing tub according to an embodiment of the present invention;

[0056] Figure 35 Schematic structure of the washing machine including the washing tub with a water flow channel according to an embodiment of the present invention;

[0057] Figure 36 Schematic diagram of the water flow channel connected to the water deflecting rib according to an embodiment of the present invention;

[0058] Figure 37 Schematic diagram of the second structure of the water flow channel connected to the water deflecting rib according to an embodiment of the present invention;

[0059] Figure 38 Schematic diagram of the third structure of the water flow channel connected to the water deflecting rib according to an embodiment of the present invention;

[0060] Figure 39 Schematic structure of another embodiment of the washing tub of the present invention;

[0061] Figure 40 Schematic cross-sectional structure of the washing tub of the present invention;

[0062] Figure 41 Schematic side view of the elastic valve of the water flow channel of the present invention provided on the wall structure of the washing tub;

[0063] Figure 42 For the present invention Figure 41Partial enlarged view of the U part;

[0064] Figure 43 Side view of the structure of the elastic valve of the water flow channel of the present invention arranged in the end water guide groove of the washing tub;

[0065] Figure 44 is Figure 43 Side view of the structure of the other side of the end water guide groove in;

[0066] Figure 45 Side view of the structure of the one-way valve of the water flow channel of the present invention arranged on the barrel wall of the washing tub;

[0067] Figure 46 Schematic diagram of the structure of the water flow channel of the present invention arranged on the front panel of the washing tub;

[0068] Figure 47 Side view of the structure of the one-way valve of the water flow channel of the present invention arranged on the front panel of the washing tub;

[0069] Figure 48 For the present invention Figure 47 Side view of the structure of the other side of the front panel of the washing tub in;

[0070] Figure 49 Schematic diagram of the inclined holeless washing tub washing machine in the embodiment of the present invention;

[0071] Figure 50 Cross-sectional view of the structure of the self-cleaning washing tub with a washing tub door in the embodiment of the present invention;

[0072] Figure 51 is Figure 50 front view of;

[0073] Figure 52 Left view of the door sealing assembly of the self-cleaning washing tub with a washing tub door described in the embodiment of the present invention;

[0074] Figure 53 Diagram of the open state of the washing tub door of the self-cleaning washing tub with a washing tub door described in the embodiment of the present invention;

[0075] Figure 54 Schematic diagram of the mating state of the positioning pin and the positioning hole of the self-cleaning washing tub with a washing tub door described in the embodiment of the present invention;

[0076] Figure 55 Diagram of the closed state of the washing tub door of the self-cleaning drum washing machine described in the embodiment of the present invention;

[0077] Figure 56 Diagram of the closed state of the washing tub door of the self-cleaning drum washing machine described in another embodiment of the present invention;

[0078] Figure 57The open state diagram of the washing tub door of the self - cleaning drum washing machine according to another embodiment of the present invention;

[0079] Figure 58 The schematic separation state diagram of the washing tub door and the outer tub of the self - cleaning drum washing machine according to another embodiment of the present invention;

[0080] Figure 59 The exploded state diagram of the washing tub door of the self - cleaning drum washing machine according to another embodiment of the present invention;

[0081] Figure 60 The schematic structure diagram of the self - cleaning drum washing machine with water inlet from the rear end according to the embodiment of the present invention;

[0082] Explanation of reference numerals:

[0083] 1. Washing tub, 2. Washing water surface, 3. Water flow channel, 4. Drainage structure, 5. Water throwing structure, 6. Front panel of the washing tub, 6-3. Water channel groove on the front panel, 6-4. Drainage hole on the front panel, 6-5. Water throwing hole on the front panel, 6-6. Cover plate of the front panel, 7- Circumference of the washing tub, 7-3. Circumference water channel groove, 7-4. Circumference drainage hole, 7-5. Circumference water throwing hole, 7-6. Cover plate of the circumference, 8- Rear panel of the washing tub, 8-3. Water channel groove on the rear panel, 8-4. Drainage hole on the rear panel, 8-5. Water throwing hole on the rear panel, 8-6. Cover plate of the rear panel, 9. Flange, 10. Bucket lid, 11. Water inlet, 12. Water deflecting rib, 1201 - First chamber, 1202 - Drainage water-facing surface, 12-4 Drainage hole of the water deflecting rib, 13. Circumference water guide groove, 14. First water guiding structure, 1401. First water guiding part, 1402. Second water guiding part, 1403. Third water guiding part, 15. Circumference top plate, 16. End water guide groove, 1601. First limiting wall, 1602. Second limiting wall, 17. Second water guiding structure, 1701. Fourth water guiding part, 1702. Fifth water guiding part, 1703. Sixth water guiding part, 18. Spiral water flow channel, 18-3. Spiral water pipe, 18-4. Drainage port of the water pipe, 18-5. Water throwing port of the water pipe, 19. Water inlet valve, 20. Outer barrel, 2001 - First outer barrel, 2002 - Second outer barrel, 2003 - Second flanging, 21. Box body, 22. Spraying hose, 23. Spraying nozzle, 24. Door cover, 25. Drainage port, 26. Drainage pipe, 28. Water inlet, 29. Washing box, 30. Water inlet hose, 31. Return spring, 32. Metal ball, 33. Door seal, 34. Rotating pin, 35. Elastic valve, 36. Check valve, 37. Fixed ring, 3701. Positioning hole, 38. Hinge, 39. Washing tub door, 3901. Positioning pin, 3902. Elastic component, 40. Handle, 41. Locking spring, 42. Magnet, 43. Hook, 44. Groove, 45. Door seal, 46. Position sensor, 47 - First door body, 48 - Fixed shaft, 49 - First flanging, 50 - Lock, 51 - Water inlet passage, 52 - Second door body, 53 - Through hole, 54 - Sealing device, 55 - Rotating device, 56 - Gasket, 57 - Bearing, 58 - Water inlet pipe, 59 - Rotating door body, 60 - Central rotating shaft. Detailed implementation manners

[0084] 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.

[0085] It should be noted that all the terms indicating direction and position 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 positional relationship and connection situation between components under a certain specific state (as shown in the attached 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 should not be construed 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 should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features.

[0086] In the description of the present invention, unless otherwise clearly defined and limited, the terms "mounted", "connected", and "coupled" shall be construed broadly. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may 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.

[0087] In the description of this specification, the descriptions with reference to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. 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 descriptions 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.

[0088] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0089] Embodiment 1

[0090] As Figures 1 - 9 shown, this embodiment discloses a washing tub with a unidirectional rotation for washing with a water flow channel. A water flow channel 3 is provided on the washing tub 1, and a drainage structure 4 is provided on the washing tub 1. One end of the water flow channel 3 is connected to the drainage structure 4, and the drainage structure 4 is used to direct the water inside the washing tub 1 to the water flow channel 3. The other end of the water flow channel 3 is connected to a water throwing structure 5, and the water throwing structure 5 is arranged outside the washing tub 1. The water throwing structure 5 is used to direct the washing water in the water flow channel 3 to the outside of the washing tub 1.

[0091] Preferably, both ends of the water flow channel 3 are on a circumference centered on the central axis of the washing tub, and the water flow channel 3 is arranged in an arc shape.

[0092] Specifically, the included angle formed by both ends of the water flow channel 3 and the central axis of the washing tub on the circular projection centered on the central axis of the washing tub 1 is α, and the included angle formed by both ends of the washing water surface 2 in the washing tub 1 and the central axis of the washing tub on the circular projection of the washing tub 1 during washing is β, and α≥β.

[0093] Further, the washing tub 1 includes a washing tub front plate 6, a washing tub circumference 7, and a washing tub rear plate 8, and the water flow channel 3 is arranged on any one or more of the washing tub front plate 6, the washing tub circumference 7, and the washing tub rear plate 8.

[0094] Preferably, the arc length of the water flow channel 3 is greater than the arc length formed by the contact between the washing water surface 2 and the washing tub.

[0095] Specifically, the value range of the included angle α between the two ends of the arc of the water flow channel 3 relative to the center of the washing tub 1 is 90 degrees - 360 degrees, preferably 100 degrees - 180 degrees.

[0096] Further, the drainage structure 4, the water flow channel 3, and the water throwing structure 5 form a water flow pipeline on the washing tub 1. Multiple water flow pipelines can be arranged on the washing tub front plate 6 and the washing tub rear plate 8, preferably 2 - 4; multiple groups of water flow pipeline devices are arranged on the washing tub circumference 7, preferably 2 - 5 groups, and each group of water flow pipeline devices is provided with multiple water flow pipelines, preferably 2 - 4.

[0097] Preferably, the water flow channel 3 is in a flat shape or a tubular shape.

[0098] Further, the water flow pipeline is arranged in a gradually shrinking shape from the drainage structure 4 to the water throwing structure 5. This setting avoids that during dehydration, when the washing tub rotates at a high speed, the washing water adheres to the water flow channel 3 under the action of centrifugal force and does not flow out from the water throwing structure 5, thus affecting the dehydration effect.

[0099] The features and structures in the embodiments of the present invention can be combined with the structures and features of other embodiments, but it must be based on the realization by those of ordinary skill in the art. When the combination of technical solutions appears contradictory or impossible to realize, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0100] This embodiment discloses a washing tub that rotates unidirectionally with a flowing water channel. By arranging a flowing water pipeline on the washing tub, one end of the flowing water pipeline is connected to the inside of the washing tub, and the other end of the flowing water pipeline is arranged outside the washing tub, so that the washing tub can complete the washing working condition, the drainage working condition, and the dehydration working condition through unidirectional continuous rotation. The rotation direction of the washing tub in the washing working condition is opposite to the rotation directions of the drainage working condition and the dehydration working condition.

[0101] Embodiment 2

[0102] This embodiment discloses a drum washing machine and a drainage method. As Figure 18 shown, the drum washing machine includes a washing tub 1. A flowing water channel 3 is arranged on the washing tub 1. One end of the flowing water channel 3 is connected to the washing tub 1. A circulation hole is arranged at the connection between the washing tub and the flowing water channel 3, and the rest of the positions are without holes. The other end of the flowing water channel 1 is formed outside the washing tub. The projection of the flowing water channel 3 on a circle with the central axis of the washing tub as the center of the circle is arc-shaped or circular. The included angle formed by the two ends of the flowing water channel 3 and the central axis of the washing tub on the circular projection of the washing tub 1 is α, and the included angle formed by the two ends of the washing water surface 2 in the washing tub 1 and the central axis of the washing tub on the circular projection of the washing tub 1 during washing is β, where α≥β. The washing machine rotates unidirectionally under the washing working condition, the drainage working condition, and the dehydration working condition. The clockwise direction formed from the connection end of the flowing water channel 3 and the washing tub to the end of the flowing water channel 3 is the same as the clockwise direction of the washing tub during washing, and the rotation direction of the washing tub under the washing working condition is opposite to the rotation direction of the washing tub under the drainage working condition. The rotation direction of the washing tub under the drainage working condition is the same as the rotation direction of the washing tub under the dehydration working condition.

[0103] To more clearly explain the working principle of the washing machine described in the present invention, the following definitions are made. In the embodiment, the clockwise and counterclockwise directions are both the clockwise directions formed when looking from one end of the water inlet of the washing tub to the end of the washing tub clutch connection. The rotation direction of the washing machine during washing is defined as the R clockwise direction, and the rotation direction of the washing machine under the drainage working condition or the dehydration working condition is defined as the S clockwise direction. The direction formed from the connection end of the flowing water channel 3 and the washing tub to the other end of the flowing water channel 3 is defined as the T clockwise direction, that is, the clockwise direction of T is the same as the clockwise direction of R, and the clockwise direction of R is opposite to the clockwise direction of S.

[0104] Combined with Embodiment 1, as Figure 35 shown, an outer tub 20 is arranged outside the washing tub 1. The water throwing structure 5 of the flowing water channel 3 is arranged between the washing tub 1 and the outer tub 20. A drain port 25 is arranged at the bottom of the outer tub 20, and a drain pipe 26 is connected to the drain port 25.

[0105] Under the action of washing water, clothes, etc., the rotational speed of the washing tub is generally within 50 revolutions per minute, and the washing water surface 2 in the washing tub is generally in a horizontal or nearly horizontal state, such as Figures 2 - 9 As shown, the drainage structure 4, the water flow channel 3 and the water throwing structure 5 of the water flow pipeline are arranged counterclockwise on the washing tub, that is, the T hour hand is counterclockwise;

[0106] When the washing tub 1 rotates clockwise:

[0107] As Figure 2 shown, at this time, both the drainage structure 4 and the water throwing structure 5 are above the washing water surface 2. At this time, there is no washing water in the water flow channel 3;

[0108] As the washing tub 1 rotates clockwise, it reaches the position as Figure 3 shown. At this time, the drainage structure 4 is lower than the washing water surface 2, the water throwing structure 5 is higher than the washing water surface 2, and the washing water is injected into the water flow channel 3 through the drainage structure 4;

[0109] Then, as the washing tub 1 rotates clockwise, it reaches the position as Figure 4 shown. At this time, the drainage structure 4 is higher than the washing water surface 2, the water throwing structure 5 is lower than the washing water surface 2, and the washing water in the water flow channel 3 is discharged to between the washing tub 1 and the outer tub 20 through the water throwing structure 5;

[0110] Again, as the washing tub 1 rotates clockwise, it reaches the position as Figure 5 shown. At this time, the drainage structure 4 is higher than the washing water surface 2, the water throwing structure 5 is lower than the washing water surface 2, and the water throwing structure 5 rotates to the lowest position of the washing tub 1. The washing water in the water flow channel 3 is completely discharged to between the washing tub 1 and the outer tub 20 through the water throwing structure 5;

[0111] Under this working condition, through the description of the A, B, C, and D states of the washing tub, every time the washing tub rotates one circle, each water flow pipeline has a process of storing water and discharging water. The washing water will flow between the inner and outer tubs during the rotation of the washing tub, thereby forming the drainage and dehydration working conditions of the washing machine, that is, the S hour hand is clockwise.

[0112] As Figures 6 - 9 shown, the drainage structure 4, the water flow channel 3 and the water throwing structure 5 of the water flow pipeline are arranged counterclockwise on the washing tub. When the washing tub 1 rotates counterclockwise:

[0113] As Figure 6 shown, at this time, both the drainage structure 4 and the water throwing structure 5 are above the washing water surface 2. At this time, there is no washing water in the water flow channel 3;

[0114] As the washing tub 1 rotates counterclockwise, it reaches the position as Figure 7At the position shown, at this time, the drainage structure 4 is higher than the washing water surface 2, the water-throwing structure 5 is lower than the washing water surface 2, and there is no washing water in the flowing water channel 3;

[0115] Then, as the washing tub 1 rotates counterclockwise, it reaches the position as shown in Figure 8 At this time, the drainage structure 4 is lower than the washing water surface 2, the water-throwing structure 5 is higher than the washing water surface 2, and washing water is injected into the flowing water channel 3 through the drainage structure 4;

[0116] Again, as the washing tub 1 rotates clockwise, it reaches the position as shown in Figure 9 At this time, the drainage structure 4 is higher than the washing water surface 2, the water-throwing structure 5 is higher than the washing water surface 2, the height of the water-throwing structure 5 is higher than the height of the drainage structure 4, and the washing water in the flowing water channel 3 flows back into the washing tub 1 again through the drainage structure 4;

[0117] Under this working condition, through the description of the states E, F, G, and H of the washing tub, the washing tub rotates unidirectionally, and the water in each flowing water pipeline is continuously stored and refluxed, and will not flow between the inner and outer tubs of the washing tub, thus forming the washing working condition of the washing machine, that is, R clockwise is counterclockwise.

[0118] When the rotation speed of the washing tub increases and the rotation speed of the washing tub is medium to high speed, the rotation speed of the washing tub is greater than 50 revolutions per minute, including the washing working condition or the drainage working condition. Under the action of the rotation of the washing tub and the water-deflecting ribs, the washing water in the washing tub is set as an inclined horizontal plane;

[0119] The drainage structure 4, the flowing water channel 3 and the water-throwing structure 5 of the flowing water pipeline are arranged counterclockwise on the washing tub 1, and the washing water surface 2 is arranged in an inclined shape or nearly inclined shape. As shown in Figures 10 - 17 At this time, through the description of the states I, J, K, L, M, N, O, and P of the washing tub, the working state of the washing machine is the same as that when the washing water surface is horizontal. When the rotation direction of the washing tub 1 is the same as the setting direction of the drainage structure 4, the flowing water channel 3 and the water-throwing structure 5 of the flowing water pipeline on the washing tub, this is the washing working condition at this time; when the rotation direction of the washing tub 1 is opposite to the setting direction of the drainage structure 4, the flowing water channel 3 and the water-throwing structure 5 of the flowing water pipeline on the washing tub, this is the drainage working condition and the dehydration working condition at this time.

[0120] That is, if the drainage structure 4, the flowing water channel 3 and the water-throwing structure 5 of the flowing water pipeline are arranged clockwise on the washing tub, when the washing tub rotates counterclockwise, it is the drainage working condition and the dehydration working condition, and when the washing tub rotates clockwise, it is the washing working condition.

[0121] If the drainage structure 4, the flowing water channel 3 and the water-throwing structure 5 of the flowing water pipeline are arranged counterclockwise on the washing tub, when the washing tub rotates clockwise, it is the drainage working condition and the dehydration working condition, and when the washing tub rotates counterclockwise, it is the washing working condition.

[0122] A method for a drum washing machine, comprising the washing tub with a water flow channel as described above, and its control steps are as follows:

[0123] St1: Turn on the washing machine and select a control program. If the washing program or the rinsing program is selected, go to step St2; if the dehydration mode is selected, go to St5;

[0124] St2: The washing tub starts to rotate. The rotation direction R of the washing tub is the same as the set direction T of the water flow channel 3, and water is injected into the washing tub;

[0125] St3: After the water injection is completed, continue to rotate unidirectionally along the rotation direction R of the washing tub to start washing;

[0126] St4: After the washing is completed, the washing tub rotates unidirectionally along the direction opposite to the set direction T of the water flow channel 3, that is, the rotation direction S is opposite to the rotation direction T, and start draining;

[0127] St5: In the dehydration mode, the washing tub rotates unidirectionally along the direction opposite to the set direction T of the water flow channel 3, and the washing tub can continue to rotate unidirectionally at a high speed along the S clockwise direction to complete the dehydration mode.

[0128] Preferably, the included angle α formed by the two ends of the water flow channel 3 and the central axis of the washing tub on the circular projection of the washing tub 1 ranges from 90° to 360°, preferably from 100° to 180°, and α > β.

[0129] In some embodiments of the present invention, the value range of α can also be 80°, 120°, 135°, 145°, 150°, 160°, 200° - 250°, 280°, 320°.

[0130] Further, one end of the water flow channel 3 is connected to the drainage structure 4, and the drainage structure 4 is used to drain the water inside the washing tub 1 to the water flow channel 3. The other end of the water flow channel 3 is connected to the water throwing structure 5. The water throwing structure 5 is arranged outside the washing tub 1, and the water throwing structure 5 is used to throw the washing water in the water flow channel 3 to the outside of the washing tub 1. Other structures are the same as those in Embodiment 1.

[0131] As some embodiments of the present invention, such as Figure 35As shown, the washing machine further includes a cabinet 21 and a door cover 24. The outer tub 20 is concentrically arranged with the washing tub 1. The washing tub 1 is connected to the reduction clutch through a flange 9. The drain pipe 26 passes through the cabinet 21 and extends out. It also includes a water inlet channel, and a fast heating device is provided on the water inlet channel. The water inlet channel includes a water inlet hose 30 and a water spraying hose 22. The water inlet hose 30 is arranged at the top inside the cabinet 21. One end of the water inlet hose 30 is installed on the cabinet 21 through a water inlet valve 19. The other end of the water inlet hose 30 is communicated with a detergent box 29. The detergent box 29 is installed on the cabinet 21 and is connected and communicated with the water spraying hose 22. The water spraying hose 22 is arranged at the front inside of the cabinet 21. The water spraying hose 22 is communicated with a water spraying nozzle 23. The water spraying nozzle 23 is mounted on the door cover 24. The water sprayed from the water spraying nozzle 23 can pass through the water inlet 28 of the tub cover 10 and enter the washing tub 1. The water spraying nozzle 23 and the water spraying hose 22 are connected through a union joint.

[0132] The features and structures in the embodiments of the present invention can be combined with the structures and features of other embodiments, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions conflicts with each other or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0133] This embodiment discloses a washing machine with a washing tub that rotates unidirectionally with a water flow channel and a drainage method. The principle of completing the washing condition, dehydration condition, and drainage condition by the unidirectional rotation of the water flow channel is described in combination with the figures, so as to ensure that the washing tub with a water flow channel that rotates unidirectionally does not leak water during the washing condition, and discharges the washing water in the washing tub during the drainage condition and dehydration condition, avoiding the back-and-forth flow of the washing water between the inner and outer tubs and causing secondary pollution. At the same time, it perfectly solves a series of sealing problems caused by the instability of the sliding seal and the shaking of the washing tub when the water flow space similar to the isolation channel rotates in the washing tub.

[0134] Embodiment 3

[0135] As Figures 19 - 26 As shown, this embodiment discloses a washing tub that rotates unidirectionally with a water flow channel. A drain hole is provided on the washing tub 1. The drain hole is communicated with a water channel groove. The water channel groove is formed on the outer wall of the washing tub 1. A cover plate is provided on the water channel groove. The water channel groove and the cover plate form a drainage cavity. A water throwing hole is formed at the end of the drainage cavity. The drain hole, the water channel groove, the cover plate, and the water throwing hole form a water flow pipeline. Other structures are the same as those in Embodiment 1 or Embodiment 2.

[0136] Specifically, the included angle formed by the two ends of the flowing water pipeline and the central axis of the washing tub on the circular projection with the central axis of the washing tub 1 as the center of the circle is α, and the included angle formed by the two ends of the washing water surface 2 in the washing tub 1 and the central axis of the washing tub on the circular projection of the washing tub 1 during washing is β, where α ≥ β.

[0137] Preferably, the washing tub 1 includes a washing tub front plate 6, a washing tub circumference 7, and a washing tub rear plate 8. A circumferential water channel groove 7-3 is provided on the washing tub circumference 7, and the circumferential water channel groove 7-3 is pressed inwards or outwards on the washing tub circumference 7, and / or a front plate water channel groove 6-3 is provided on the washing tub front plate 6, and the front plate water channel groove 6-3 is pressed inwards or outwards concavely or convexly on the washing tub front plate 6, and / or a rear plate water channel groove 8-3 is provided on the washing tub rear plate 8, and the rear plate water channel groove 8-3 is pressed inwards or outwards concavely or convexly on the washing tub rear plate 8.

[0138] Further, a circumferential drain hole 7-4 is provided on the washing tub circumference 7. The circumferential drain hole 7-4 is communicated with the circumferential water channel groove 7-3. A circumferential cover plate 7-6 is provided on the circumferential water channel groove 7-3. The circumferential cover plate 7-6 and the circumferential water channel groove 7-3 form a circumferential drainage cavity. A circumferential water throwing hole 7-5 is formed at the other end of the circumferential drainage cavity. The circumferential drain hole 7-4, the circumferential water channel groove 7-3, the circumferential cover plate 7-6, and the circumferential water throwing hole 7-5 form a barrel body flowing water pipeline.

[0139] Preferably, the included angle between the two ends of the circumferential water channel groove 7-3 relative to the center of the washing tub 1 is 90 degrees to 360 degrees, preferably 100 degrees to 180 degrees.

[0140] Further, a plurality of barrel body flowing water pipelines are provided on the circumference with the central axis of the washing tub 1 as the center of the circle. The plurality of barrel body flowing water pipelines provided on the same circumference form a set of flowing water pipeline devices. Multiple sets of flowing water pipeline devices are provided on the washing tub 1, and each set of flowing water pipeline devices is preferably provided with 2 to 4.

[0141] Furthermore, the barrel body flowing water pipeline is arranged in a gradually shrinking shape from the circumferential drain hole 7-4 to the circumferential water throwing hole 7-5. As an example, the front plate drainage cavity covers a plurality of circumferential drain holes 7-4. This setting avoids the situation that during dehydration, when the washing tub rotates at a high speed, the washing water adheres to the circumferential cover plate 7-6 under the action of centrifugal force and does not flow out from the circumferential water throwing hole 7-5.

[0142] Preferably, a front panel drain hole 6-4 is provided on the front panel 6 of the washing tub. The front panel water channel groove 6-3 is communicated with the front panel drain hole 6-4. A front panel cover plate 6-6 is provided on the front panel water channel groove 6-3. The front panel water channel groove 6-3 and the front panel cover plate 6-6 form a front panel drainage cavity. A front panel water throwing hole 6-5 is formed at the other end of the front panel drainage cavity. The front panel drain hole 6-4, the front panel water channel groove 6-3, the front panel cover plate 6-6, and the front panel water throwing hole 6-5 form a front panel water flow pipeline.

[0143] Further, the front panel water channel groove 6-3 is arranged in an arc on a circumference with the central axis of the washing tub 1 as the center. The included angle between the two ends of the front panel water channel groove 6-3 relative to the center of the front panel 6 of the washing tub is 90 degrees to 360 degrees, preferably 100 degrees to 180 degrees.

[0144] Preferably, the front panel drain hole 6-4 is provided on the front panel 6 of the washing tub near the circumference 7 of the washing tub. A plurality of front panel water flow pipelines are provided on the front panel 6 of the washing tub. As an example, the plurality of front panel water flow pipelines can be formed on the same circumference with the front panel 6 of the washing tub as the center, or can be formed on different circumferences with the front panel 6 of the washing tub as the center.

[0145] Further, the front panel water flow pipeline is arranged in a gradually shrinking shape from the front panel drain hole 6-4 to the front panel water throwing hole 6-5. As an example, the front panel drainage cavity covers a plurality of front panel drain holes 6-4. This setting avoids the situation that when dehydrating, the washing tub rotates at a high speed, and the washing water adheres to the front panel cover plate 6-6 under the action of centrifugal force and does not flow out from the front panel water throwing hole 6-5.

[0146] Preferably, a rear panel drain hole 8-4 is provided on the rear panel 8 of the washing tub. The rear panel water channel groove 8-3 is communicated with the rear panel drain hole 8-4. A rear panel cover plate 8-6 is provided on the rear panel water channel groove 8-3. The rear panel water channel groove 8-3 and the rear panel cover plate 8-6 form a rear panel drainage cavity. A rear panel water throwing hole 8-5 is formed at the other end of the rear panel drainage cavity. The rear panel drain hole 8-4, the rear panel water channel groove 8-3, the rear panel cover plate 8-6, and the rear panel water throwing hole 8-5 form a rear panel water flow pipeline.

[0147] Further, the rear panel water channel groove 8-3 is arranged in an arc on a circumference with the center of the rear panel 8 of the washing tub as the center. The included angle between the two ends of the rear panel water channel groove 8-3 relative to the center of the rear panel 8 of the washing tub is 90 degrees to 360 degrees, preferably 100 degrees to 180 degrees.

[0148] Preferably, the rear panel drain hole 8-4 is arranged on the rear panel 8 of the washing tub near the circumference 7 of the washing tub, and a plurality of rear panel water flow pipelines are arranged on the rear panel 8 of the washing tub. As an example, the plurality of rear panel water flow pipelines can be formed on the same circumference centered on the rear panel 8 of the washing tub, or can be formed on different circumferences centered on the rear panel 8 of the washing tub.

[0149] Furthermore, the rear panel water flow pipeline is arranged in a gradually shrinking shape from the rear panel drain hole 8-4 to the rear panel water throwing hole 8-5. As an example, the rear panel drain cavity covers a plurality of rear panel drain holes 8-4. This setting avoids the situation that when dehydrating, the washing tub rotates at a high speed, and the washing water adheres to the rear panel covering plate 8-6 under the action of centrifugal force and does not flow out from the rear panel water throwing hole 8-5.

[0150] As an example, on the washing tub 1, only the front panel water flow pipeline device can be arranged, or only the rear panel water flow pipeline device can be arranged, or the circumferential water flow pipeline device can also be arranged; when only the front panel water flow pipeline device and / or the rear panel water flow pipeline device are arranged, the front panel water flow pipeline device must include the front panel water flow pipeline with the front panel drain hole 6-4 arranged on the front panel 6 of the washing tub near the circumference 7 of the washing tub. Similarly, the rear panel water flow pipeline device must include the rear panel water flow pipeline with the rear panel drain hole 8-4 arranged on the rear panel 8 of the washing tub near the circumference 7 of the washing tub. This setting improves the efficiency and reliability of the washing water flowing out during the drainage condition and the dehydration condition.

[0151] The features and structures in the embodiments of the present invention can be combined with the structures and features of other embodiments, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions appears to be contradictory or unable to be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0152] This embodiment discloses a setting method and a water flow structure of a water flow channel of a washing tub with a unidirectional rotating water flow channel. There are no other holes in the entire washing tub except for the drain holes. Each front panel water channel groove 6-3, circumferential water channel groove 7-3, and rear panel water channel groove 8-3 are connected to one drain hole or two symmetric drain holes or multiple drain holes, and a covering plate is arranged on each water channel groove to form a groove shape with the water channel groove of the washing tub, forming a water flow pipeline that only passes through the drain holes on the washing tub 1 and then leads to the water throwing holes outside the washing tub. This setting makes each water channel groove a ring or a partial ring relative to the central axis of the washing tub, where each section starts from the drain hole and ends at the water throwing hole, and the relative positions of the drain holes and water throwing holes of each water flow pipeline are in the same direction, that is, all are arranged clockwise or all are arranged counterclockwise.

[0153] The working principle of the washing machine including the washing tub is the same as that described in Embodiment 2, and will not be elaborated here.

[0154] Embodiment 4

[0155] As Figures 27 - 31 shown, this embodiment discloses another washing tub with a unidirectional rotating water flow channel. The washing tub 1 includes a washing tub front plate 6, a washing tub circumference 7, and a washing tub rear plate 8. A circumferential drain hole 7-4 is provided on the washing tub circumference 7. A circumferential water guide groove 13 is provided on the outer surface of the washing tub circumference 7. A first water guiding structure 14 is provided on the circumferential water guide groove 13. The first water guiding structure 14 is communicated with the circumferential drain hole 7-4. A circumferential top plate 15 is provided on the side of the circumferential water guide groove 13 away from the outer surface of the washing tub circumference 7. The circumferential top plate 15 and the circumferential water guide groove 13 form a circumferential drainage cavity for the first water guiding structure 14. A circumferential water throwing hole 7-5 is provided on the circumferential top plate 15. The circumferential water throwing hole 7-5 is communicated with the first water guiding structure 14. The circumferential drain hole 7-4, the circumferential water guide groove 13, the first water guiding structure 14, the circumferential top plate 15, and the circumferential water throwing hole 7-5 form a water flow pipeline for the tub body. Other structures are the same as those in other embodiments. This setting discloses another water flow pipeline for the tub body, ensuring the diversity and reliability of the outflow of washing water during the drainage and dehydration working conditions.

[0156] Specifically, the included angle formed by the two ends of the water flow pipeline for the tub body and the central axis of the washing tub on the circular projection with the central axis of the washing tub 1 as the center of the circle is α, and the included angle formed by the two ends of the washing water surface 2 in the washing tub 1 and the central axis of the washing tub on the circular projection of the washing tub 1 during washing is β, and α≥β.

[0157] Preferably, the circumferential water guide groove 13 is arranged in a circumferential shape, the circumferential water guide groove 13 is sleeved on the outer surface of the washing tub circumference 7, the circumferential top plate 15 is also arranged in a circumferential shape, and the circumferential top plate 15 is sleeved on the outer surface of the circumferential water guide groove 13. This setting facilitates the assembly of the water flow pipeline for the tub body and improves the sealing performance of the water flow pipeline for the tub body.

[0158] Further, the two ends of the first water guiding structure 14 are respectively communicated with the circumferential drain hole 7-4 and the circumferential water throwing hole 7-5. The included angle formed by the two ends of the first water guiding structure 14 and the central axis of the washing tub circumference 7 is 90 degrees to 360 degrees, preferably 100 degrees to 180 degrees.

[0159] Preferably, multiple first water guiding structures 14 are provided on the circumferential water guide groove 13. The water guiding channels of the first water guiding structures 14 are arranged in a small-large-small structure from the end close to the circumferential drain hole 7-4 to the end of the circumferential water throwing hole 7-5.

[0160] Specifically, three first water diversion structures 14 are provided on the circumferential water guide groove 13. The first water diversion structure 14 includes a first water diversion part 1401, a second water diversion part 1402, and a third water diversion part 1403. The upper ends of the first water diversion part 1401 and the second water diversion part 1402 are connected, and the lower end of the third water diversion part 1403 is connected to the lower end of the second water diversion part 1402. This setting rationally utilizes the structure of the circumferential water guide groove 13. The first water diversion part 1401 is connected to the circumferential drain hole 7-4, and the third water diversion part 1403 is connected to the circumferential water throwing hole 7-5. On the one hand, the volume of the water diversion channel of the first water diversion structure 14 is increased as much as possible. On the other hand, the connection positions of the circumferential drain hole 7-4 and the circumferential water throwing hole 7-5 with the first water diversion structure 14 are arranged in a staggered manner, facilitating the dehydration of the washing water in the washing tub 1 when the washing tub 1 rotates at a high speed. At the same time, the third water diversion part 1403 connecting the first water diversion structure 14 and the circumferential water throwing hole 7-5 is arranged in a contracted shape relative to the second water diversion part 1402, further improving the efficiency and reliability of discharging the washing water.

[0161] Further, a plurality of circumferential water guide grooves 13 are provided on the circumference 7 of the washing tub, and a circumferential top plate 15 is provided on the outer surface of each circumferential water guide groove 13. This setting further improves the efficiency of discharging the washing water of the barrel body water flow pipeline under the drainage condition and the dehydration condition.

[0162] Preferably, a front plate drain hole 6-4 is provided on the front plate 6 of the washing tub, an end water guide groove 16 is provided outside the front plate 6 of the washing tub, a second water diversion structure 17 is provided on the side of the end water guide groove 16 close to the front plate 6 of the washing tub. The end water guide groove 16 and the front plate 6 of the washing tub form a front plate drainage cavity for the second water diversion structure 17. The end of the second water diversion structure 17 and the end water guide groove 16 form a front plate water throwing hole 6-5. The front plate drain hole 6-4, the end water guide groove 16, the second water diversion structure 17, and the front plate water throwing hole 6-5 form a front plate water flow pipeline. This setting discloses another front plate water flow pipeline, ensuring the diversity and reliability of the outflow of the washing water under the drainage condition and the dehydration condition.

[0163] Specifically, the included angle formed by the two ends of the front plate water flow pipeline and the central axis of the washing tub on the circular projection with the central axis of the washing tub 1 as the center of the circle is α, and the included angle formed by the two ends of the washing water surface 2 in the washing tub 1 and the central axis of the washing tub on the circular projection of the washing tub 1 during washing is β, and α≧β.

[0164] Further, the overall shape of the end water guide groove 16 is annular with the center of the front panel 6 of the washing tub as the center of the circle. The end water guide groove 16 includes a first limiting wall 1601 and a second limiting wall 1602. A second water diversion structure 17 is formed between the first limiting wall 1601 and the second limiting wall 1602. The included angles formed by the two ends of the second water diversion structure 17 and the center of the front panel 6 of the washing tub are 90 degrees to 360 degrees, preferably 100 degrees to 180 degrees.

[0165] Preferably, a plurality of second water diversion structures 17 are formed on the end water guide groove 16. The water diversion channels of the second water diversion structures 17 are arranged in a small-large-small structure from the end close to the front panel drain hole 6-4 to the end of the front panel water throwing hole 6-5.

[0166] Specifically, three second water diversion structures 17 are arranged on the end water guide groove 16. The second water diversion structure 17 includes a fourth water diversion part 1701, a fifth water diversion part 1702, and a sixth water diversion part 1703. The upper ends of the fourth water diversion part 1701 and the fifth water diversion part 1702 are connected, and the lower end of the sixth water diversion part 1703 is connected to the lower end of the fifth water diversion part 1702. This setting rationally utilizes the structure of the end water guide groove 16. The fourth water diversion part 1701 is connected to the front panel drain hole 6-4, and the sixth water diversion part 1703 is connected to the front panel water throwing hole 6-5. As Figure 31 shown, the washing water flows from the inside of the washing tub 1 through the front panel drain hole 6-4 to the second water diversion structure 17, and then flows in the front panel drain cavity in the Figure 31 arrow direction shown to the front panel water throwing hole 6-5, so as to discharge the washing water from the washing tub during the drainage and dehydration conditions. On the one hand, the volume of the water diversion channels of the second water diversion structure 17 is increased as much as possible. On the other hand, the connection positions of the front panel drain hole 6-4, the front panel water throwing hole 6-5 and the second water diversion structure 17 are arranged in a staggered manner, which is convenient for the washing tub 1 to spin dry the washing water in the washing tub 1 during high-speed rotation dehydration. At the same time, the sixth water diversion part 1703 connecting the second water diversion structure 17 and the front panel water throwing hole 6-5 is arranged in a contracted shape relative to the fifth water diversion part 1702, further improving the efficiency and reliability of discharging the washing water.

[0167] Preferably, a rear panel drain hole 8-4 is provided on the rear panel 8 of the washing tub, and an end water guide groove 16 is provided outside the rear panel 8 of the washing tub to form a rear panel water flow pipeline. The end water guide groove 16 provided outside the rear panel 8 of the washing tub has the same or similar structure as the end water guide groove 16 provided outside the front panel 6 of the washing tub.

[0168] Combined with Embodiment 3, this embodiment discloses another setting method of the water flow channel and the water flow structure of the washing tub that rotates unidirectionally with a water flow channel. Other structures are also set as in Embodiment 3. The working principle of the washing machine including it is the same as that described in Embodiment 2, and will not be elaborated here one by one.

[0169] The features and structures in the embodiments of the present invention can be combined with the structures and features of other embodiments, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0170] Embodiment 5

[0171] As Figures 32 - 34 shown, this embodiment discloses another washing tub with a spiral water flow channel. The washing tub 1 includes a washing tub front plate 6, a washing tub circumference 7, and a washing tub rear plate 8. A spiral water flow channel 18 is provided on the washing tub circumference 7. The spiral water flow channel 18 is arranged in a spiral shape. One end of the spiral water flow channel 18 is connected to the inside of the washing tub 1, and the other end of the spiral water flow channel 18 is arranged outside the washing tub 1. The spiral-shaped spiral water flow channel 18 means that the centers of the two ends of the spiral water flow channel 18 are not on the same circumference with the center axis of the washing tub as the center of the circle. Other structures are the same as those in Embodiment 1 or Embodiment 2 or Embodiment 3 or Embodiment 4.

[0172] Specifically, the included angle formed by the two ends of the spiral water flow channel 18 and the central axis of the washing tub on the circular projection with the central axis of the washing tub 1 as the center of the circle is α, and the included angle formed by the two ends of the washing water surface 2 in the washing tub 1 and the central axis of the washing tub on the circular projection of the washing tub 1 is β, and α≧β.

[0173] Preferably, the spiral water flow channel 18 includes a spiral water inlet pipe 18-3. The spiral water inlet pipe 18-3 is arranged on the outer wall of the washing tub circumference 7. One end of the spiral water inlet pipe 18-3 is connected to the washing tub 1 through a water inlet pipe drain port 18-4, and a water inlet pipe throwing port 18-5 formed at the other end of the spiral water inlet pipe 18-3 is arranged outside the washing tub 1.

[0174] Furthermore, the projections of the two ends of the spiral water inlet pipe 18-3 on the circle with the central axis of the washing tub circumference 7 as the center of the circle are arranged in an arc shape. The included angle between the projections of the two ends of the spiral water inlet pipe 18-3 on this circle and the center of the circle is not less than 90 degrees, preferably 100 degrees - 180 degrees. This setting ensures that the arc length of the projections of the two ends of the spiral water flow channel 18 is greater than the arc length formed by the contact between the washing water surface 2 and the washing tub on the one hand, and improves the utilization efficiency of the outer wall of the washing tub circumference 7 on the other hand.

[0175] Preferably, as Figure 32 shown, a plurality of spiral water channels 18 are provided. The water discharge ports 18-4 of the water inlet pipes of the plurality of spiral water channels 18 may be arranged parallel to the central axis of the circumference 7 of the washing tub, or may be arranged offset from each other.

[0176] Furthermore, the water throwing ports 18-5 of the water inlet pipes of the plurality of spiral water channels 18 may be arranged parallel to the central axis of the circumference 7 of the washing tub, or may be arranged offset from each other. This arrangement further improves the diversity and reliability of the outflow of the washing water in the washing tub during the drainage and dehydration conditions.

[0177] Preferably, the spiral water inlet pipe 18-3 is arranged in a gradually shrinking shape from the water discharge port 18-4 of the water inlet pipe to the water throwing port 18-5 of the water inlet pipe. As an example, the diameter of the water discharge port 18-4 of the water inlet pipe is larger than the diameter of the water throwing port 18-5 of the water inlet pipe, or the side of the spiral water inlet pipe 18-3 close to the water discharge port 18-4 of the water inlet pipe covers a plurality of water discharge ports 18-4 of the water inlet pipe. This arrangement prevents the washing water from adhering to the spiral water inlet pipe 18-3 under the action of centrifugal force and not flowing out from the water throwing port 18-5 when the washing tub rotates at a high speed during dehydration.

[0178] This embodiment discloses another setting method and water flow structure of a washing tub with a falling selection type water channel. The other structures are also set as in Embodiment 3 or Embodiment 4, and the working principle of the washing machine including it is the same as that described in Embodiment 2, which will not be elaborated here one by one.

[0179] The features and structures in the embodiments of the present invention can be combined with the structures and features of other embodiments, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions conflicts with each other or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0180] Embodiment 6

[0181] As Figures 36 - 38 shown, this embodiment discloses a self-cleaning drum and a washing machine with water deflectors. A water deflector 12 is arranged inside the washing tub 1. A first chamber 1201 is arranged inside the water deflector 12. A water deflector drain hole 12-4 is arranged on the first chamber 1201. The first chamber 1201 is communicated with the inside of the washing tub 1 through the water deflector drain hole 12-4. A water flow channel 3 is arranged outside the washing tub 1. One end of the water flow channel 3 is communicated with the first chamber 1201, and the other end of the water flow channel 3 forms a water throwing structure 5. The water throwing structure 5 is arranged outside the washing tub 1. The other structures are the same as those of other embodiments.

[0182] Specifically, the included angle formed by the two ends of the water flow channel 3 and the central axis of the washing tub on the circular projection centered on the central axis of the washing tub 1 is α, and the included angle formed by the two ends of the washing water surface 2 in the washing tub 1 and the central axis of the washing tub on the circular projection of the washing tub 1 during washing is β, where α≥β.

[0183] As an example, the water drainage holes 12-4 of the water deflecting ribs, the first chamber 1201, the water flow channel 3, and the water throwing structure 5 form a water flow pipeline on the washing tub 1. The water flow pipeline includes one or more of the barrel body water flow pipeline, the front plate water flow pipeline, and the rear plate water flow pipeline. That is, the water flow channel 3 can be formed in one or more of the barrel body of the washing tub, the front end of the washing tub, and the rear end of the washing tub.

[0184] Preferably, the water deflecting ribs 12 are arranged on the inner wall of the washing tub 1, and the water deflecting ribs 12 are arranged in an overall inclined shape from near the front end of the washing tub to the rear end of the washing tub.

[0185] Specifically, the water flow channel 3 is arranged in an overall counterclockwise direction from the end close to the water drainage holes 12-4 of the water deflecting ribs to the end close to the water throwing structure 5. The water deflecting ribs 12 are arranged in an overall inclined shape that gradually becomes larger from near the front end of the washing tub to the rear end of the washing tub. The water flow channel 3 includes a barrel body water flow pipeline and / or a front plate water flow pipeline. As an example, as Figure 36 shown by the water deflecting ribs 12, the water deflecting ribs 12 are arranged in an inclined upward structure from the front end of the washing tub, that is, the side close to the water inlet 28, to the rear end of the washing tub, that is, the side close to the flange 9. Under the action of the clockwise high-speed rotation of the washing tub, the washing water surface is formed at the lower left corner. Under the action of the inclined water deflecting ribs, the washing water will be discharged outward, and the washing water will accumulate at the water inlet. The arranged barrel body water flow pipeline and / or front plate water flow pipeline is more convenient for drainage, meeting the washing working conditions or drainage working conditions;

[0186] Under the action of the counterclockwise rotation of the washing tub, the washing water surface is formed at the lower right corner. Under the action of the inclined water deflecting ribs, the washing water will be discharged towards the flange side and accumulate inside. No rear plate water flow pipeline is arranged on the washing tub to avoid water leakage under the washing working conditions.

[0187] Or, the water flow channel 3 is arranged in an overall clockwise direction from the end close to the water drainage holes 12-4 of the water deflecting ribs to the end close to the water throwing structure 5. The water deflecting ribs 12 are arranged in an overall inclined shape that gradually becomes smaller from near the front end of the washing tub to the rear end of the washing tub. The water flow channel 3 includes a barrel body water flow pipeline and / or a rear plate water flow pipeline.

[0188] Preferably, the cross-section of the water deflecting rib 12 is triangular. The water deflecting rib 12 includes a drainage water-facing surface 1202, which is the surface of the water deflecting rib 12 away from the water throwing structure 5 connected thereto. This setting makes the drainage water-facing surface 1202 face the rotating washing water during the drainage condition, which is more conducive to the drainage of the washing water.

[0189] Further, the included angle between the two ends of the arc of the water flow channel 3 relative to the center of the washing tub 1 is 90 degrees - 360 degrees, preferably 100 degrees - 180 degrees.

[0190] Preferably, multiple water flow pipelines can be provided on the front panel 6 and the rear panel 8 of the washing tub, preferably 2 - 4; multiple sets of water flow pipeline devices are provided on the circumference 7 of the washing tub, preferably 2 - 5 sets, and each set of water flow pipeline devices is provided with multiple water flow pipelines, preferably 2 - 4.

[0191] Further, a plurality of water deflecting rib drainage holes 12-4 are provided on the water deflecting rib 12. The same water deflecting rib 12 is connected to multiple water flow channels 3, and a water throwing structure 5 is provided at the end of each water flow channel 3. This setting further improves the drainage efficiency.

[0192] Preferably, a plurality of water deflecting ribs 12 are provided inside the washing tub 1, preferably 2 - 6.

[0193] Further, as Figure 38 shown, the drainage water-facing surface 1202 is in an arc-shaped concave shape, and a plurality of water deflecting rib drainage holes 12-4 are provided on the drainage water-facing surface 1202. This setting further improves the drainage reliability and efficiency of the water flow channel 3.

[0194] Preferably, as some embodiments of the present invention, the water deflecting rib drainage holes 12-4 are in contact with the barrel wall of the circumference 7 of the washing tub. This setting further ensures the drainage reliability and efficiency of the water flow channel 3.

[0195] This embodiment discloses another setting method and water flow structure of the water flow channel of the self-cleaning drum and washing machine with water deflecting ribs. The other structures are also set in the same or similar manner as those of other embodiments. The working principle of the washing machine including it is the same as that described in Embodiment 2, and will not be elaborated here one by one.

[0196] The features and structures in the embodiments of the present invention can be combined with the structures and features of other embodiments, but it must be based on what can be achieved by those of ordinary skill in the art. When the combination of technical solutions results in contradictions or cannot be achieved, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0197] Embodiment 7

[0198] As shown Figure 22 , 39 in Figures 40 to 41, a structural schematic diagram of a washing tub with a two-way washing water channel is disclosed, including a washing tub 1 and a water channel 3 connected to the washing tub 1. A valve is provided at one end of the water channel 3. The water channel 3 is provided in a tubular or flat shape. When the water channel 3 is arranged outside the washing tub 1, it is the same as the structure or feature in other embodiments.

[0199] One end of the water channel 3 is connected to the inside of the washing tub 1, and the other end is arranged outside the washing tub 1. The water channel 3 is tightly connected to the outer wall of the washing tub 1 and rotates with the washing tub 1. A drainage structure 4 is provided on the washing tub 1. The drainage structure 4 is used to drain the water in the washing tub 1 into the water channel 3. A water throwing structure 5 is provided at the other end of the water channel 3. The water throwing structure 5 is arranged outside the washing tub 1.

[0200] Preferably, a spiral water deflecting rib 12 is provided on the inner wall of the washing tub 1. The drainage structure 4 can also be arranged on the water-facing surface of the water deflecting rib 12, which is convenient for the water in the washing tub 1 to quickly enter the water channel 3 during dehydration, reducing the dehydration time.

[0201] Among them, the water channel 3 is tightly connected to the outer wall of the washing tub 1. The water channel 3 has an arc-shaped structure. The two ends of the water channel 3 are in the same cross-section centered on the central axis of the washing tub 1, or the two ends of the water channel 3 can also be located in different cross-sections centered on the central axis of the washing tub 1, that is, the water channel 3 can be arranged in a spiral shape. When the horizontal positions of both ends of the water channel 3 are lower than the washing water surface 2 during the rotation of the washing tub, water leakage will inevitably occur during the rotation and washing of the washing tub 1. Therefore, at least one of the horizontal positions of the two ends of the water channel 3 should be higher than the liquid level. Preferably, the included angle between the projections of the two ends of the water channel 3 on the same cross-section centered on the central axis of the washing tub 1 and the center of the cross-section is 90 to 360 degrees.

[0202] Preferably, a cover plate can also be provided outside the washing tub 1. Outer convex or inner concave water channels are formed on the washing tub 1 by rolling. The cover plate and the water channels form a water channel. Among them, the washing tub 1 includes a washing tub front plate 6, a washing tub circumference 7, and a washing tub rear plate 8. A front plate water channel 6-3 is provided outside the washing tub front plate 6, a circumferential water channel is provided on the washing tub circumference 7, and a rear plate water channel 8-3 is provided outside the washing tub rear plate 8. The specific structure is the same as that in other embodiments.

[0203] In order to ensure that the water in the washing tub does not leak during the washing state at both lower and higher liquid levels and can be quickly drained under the dehydration condition, preferably, the included angle between the projections of both ends of the water flow channel 3 on the same cross-section centered on the central axis of the washing tub 1 and the center of this cross-section is 100 to 180 degrees. At least one group of the water flow channels 3 can be provided on the washing tub 1, and each group can also be set to 1 to 4, preferably set to 2 to 3.

[0204] As is well known, when using a washing machine with bidirectional rotation to wash clothes, it can save washing time and improve the washing machine effect. However, for a drum washing machine with a bidirectional rotating tub without holes, how to set up a water flow channel that does not leak when the washing tub rotates during washing and can quickly drain the washing water when the washing tub rotates during dehydration is a difficult problem. The present invention realizes that the drum washing machine with bidirectional rotation does not leak when rotating at a low speed during washing and can quickly drain the washing water when the washing tub rotates in the reverse direction at a high speed by setting a valve that can be opened and closed at one end of the water flow channel.

[0205] Therefore, a valve can be set at one end of the water flow channel 3, and by controlling the opening and closing states of the valve, the bidirectional rotation washing of the washing tub can be realized. The valve can be set as an elastic valve 35 or a gravity check valve 36. Both the elastic valve 35 and the gravity check valve 36 can make the washing water in the washing tub flow from the water flow channel 3 to the outside of the washing tub under the action of the centrifugal force generated by the high-speed rotation of the washing tub. The rotation speed of the high-speed rotation of the washing tub is not less than 80 r / min.

[0206] The present invention also discloses a drainage method for a washing machine with bidirectional washing, as Figure 40 shown. The drum washing machine includes a washing tub 1. A water flow channel 3 is provided on the washing tub 1. One end of the water flow channel 3 is communicated with the washing tub 1. A drainage structure 4 is provided at the connection between the washing tub and the water flow channel 3, and the rest is without holes. The other end of the water flow channel 3 is formed outside the washing tub. The projection of the water flow channel 3 on the circle centered on the central axis of the washing tub is arc-shaped or circular. The included angle formed by both ends of the water flow channel 3 and the central axis of the washing tub on the circular projection of the washing tub 1 is α, and the included angle formed by both ends of the washing water surface in the washing tub 1 during washing and the central axis of the washing tub on the circular projection of the washing tub 1 is β, where α≧β. In order to more clearly explain the working principle of the washing machine of the present invention, the following definitions are made: The direction from the drainage structure 4 to the water throwing structure 5 is defined as the direction of the water flow channel 3;

[0207] During the washing operation and the rinsing operation, the rotation speed of the washing tub 1 is not greater than 80 r / min, and the rotation direction of the washing tub 1 is the same as or opposite to that of the water flow channel 3; during the drainage operation and the dehydration operation, the rotation direction of the washing tub 1 is opposite to that of the water flow channel 3, and the rotation speed of the washing tub increases. After the rotation speed of the washing tub 1 is greater than 80 r / min, the valve of the water flow channel opens under the action of centrifugal force.

[0208] The features and structures in the embodiments of the present invention can be combined with the structures and features of other embodiments, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0209] Example 8

[0210] As Figures 40 - 42 As shown, this embodiment provides a washing tub for bidirectional washing. A water flow channel 3 is provided on the side wall of the washing tub, and an elastic valve 35 is provided at one end of the water flow channel 3 to achieve bidirectional rotation washing of the washing tub. The water flow channel 3 is the same as or similar to the structures of other embodiments.

[0211] Among them, the elastic valve 35 is provided at the water throwing structure 5 of the water flow channel 3. Specifically, the structure of the elastic valve 35 includes a return spring 31, a metal ball 32, a sealing door 33, and a rotating pin 34. When the washing tub is stationary, under the action of the return spring 31, the sealing door 33 covers the outer surface of the water throwing structure 5 of the water flow channel 3. At this time, the elastic valve 35 is in a closed state, preventing the water in the water flow channel 3 from flowing out through the water throwing structure 5.

[0212] As some examples of the present invention, the water throwing structure 5 may be a water throwing hole formed at one end of the water flow channel 3, and the drainage structure 4 may be a drainage hole formed on the washing tub 1.

[0213] During the washing operation, if the rotation direction of the washing tub 1 is the same as that of the water flow channel 3, the elastic valve 35 is closed, and the water in the washing tub 1 does not drain. Similarly, during the washing operation, when the rotation speed of the washing tub 1 is below 80 r / min and the rotation direction of the washing tub 1 is opposite to that of the water flow channel 3, the elastic valve 35 is still in a closed state, and the water in the washing tub 1 does not drain. The setting of the elastic valve 35 in this embodiment enables the washing machine with a tub without holes to achieve bidirectional rotation washing.

[0214] Under the dehydration condition, the rotation direction of the washing tub 1 is opposite to that of the water flow channel 3, and the washing tub 1 starts to rotate in the reverse direction at a high speed. When the rotation speed of the washing tub 1 is greater than 80 r / min, the centrifugal force generated by the metal ball 32 overcomes the pulling force of the return spring 31, and the sealing door 33 opens. The water in the washing tub 1 flows out from the drainage structure 4, through the water flow channel 3, and via the water throwing structure 5. Moreover, the faster the washing tub 1 rotates, the greater the centrifugal force generated by the metal ball 32, the larger the opening angle of the sealing door 33, and the faster the rate at which the water in the washing tub 1 flows out.

[0215] This embodiment provides a washing tub without holes, which realizes bidirectional rotational washing, effectively prevents the washing machine from leaking water, avoids secondary pollution of clothes, and realizes automatic drainage, having great popularization and application value.

[0216] The features and structures in the embodiments described in the present invention can be combined with the structures and features of other embodiments, but it must be based on the premise that those skilled in the art can implement it. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0217] Embodiment 9

[0218] As Figures 43 - 44 shown, this embodiment provides a washing tub for bidirectional washing, and a water flow channel 3 is provided at the washing tub front plate 6 or the washing tub front plate 8 of the washing tub 1. Among them, when the water flow channel 3 is provided at the washing tub front plate 6 of the washing tub 1, a drainage structure 4 is provided on the washing tub front plate 6, and an end water guide groove is covered on the outer surface of the washing tub front plate 6. A semi-closed second water diversion structure 17 is provided on the inner surface of the end water guide groove, and the second water diversion structure 17 and the washing tub front plate 6 of the washing tub 1 form the water flow channel 3;

[0219] Similarly, a semi-closed front plate water channel groove 6-3 recessed inward can also be provided on the outer surface of the washing tub front plate 6, and a front plate covering plate 6-6 covers the outer surface of the front plate water channel groove 6-3. The front plate covering plate 6-6 and the semi-closed front plate water channel groove 6-3 on the outer surface of the washing tub front plate 6 form the water flow channel 3. One end of the front plate water channel groove 6-3 coincides with the drainage structure 4 on the washing tub front plate 6, and the other end of the front plate water channel groove 6-3 forms the water throwing structure 5 of the water flow channel 3. The water throwing structure 5 is provided at the edge of the washing tub front plate 6, and an elastic valve 35 is provided at the water throwing structure 5. The structure and working principle of the elastic valve 35 are the same as those in Embodiment 7.

[0220] In the washing mode, when the rotational speed of the washing tub 1 is below 80 r / min, regardless of whether the rotational direction of the washing tub 1 is the same as or opposite to that of the water flow channel 3, the elastic valve 35 is in a closed state, and the water in the washing tub 1 does not drain; in the dehydration mode, the rotational direction of the washing tub 1 is opposite to that of the water flow channel 3. When the rotational speed of the washing tub 1 is higher than 80 r / min, the elastic valve 35 is in an open state, and the water in the washing tub 1 flows into the second water diversion structure 17 through the drainage structure 4 and flows out from the water throwing structure 5 as the washing tub 1 rotates.

[0221] For the poreless washing tub provided in this embodiment, the water flow channel is arranged at the front end or the rear end of the washing tub, effectively increasing the cross-sectional area of the washing tub and the volume for accommodating clothes.

[0222] The features and structures in the embodiments described in the present invention can be combined with the structures and features of other embodiments, but it must be based on the premise that those skilled in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0223] Embodiment 10

[0224] As Figure 45 shown, this embodiment provides a washing tub for bidirectional washing. A water flow channel 3 is arranged on the side wall of the washing tub 1, and a one-way valve 36 is arranged at one end of the water flow channel 3 to realize bidirectional rotational washing of the washing tub. Among them, the one-way valve 36 is arranged at the drainage structure 4 of the water flow channel 3, and the one-way valve 36 is arranged to be able to open from the inside out. Specifically, when the washing tub 1 is stationary, the one-way valve 36 is in a closed state without being affected by external forces.

[0225] In the washing mode, when the rotational speed of the washing tub 1 is less than 80 r / min and the rotational direction of the washing tub 1 is the same as that of the water flow channel 3, the water in the washing tub 1 does not drain. Similarly, in the washing mode, when the rotational direction of the washing tub 1 is opposite to that of the water flow channel 3, due to the relatively low rotational speed of the washing tub 1, the centrifugal force acting on the one-way valve 36 is also relatively small and it remains in a closed state. At this time, the water in the washing tub 1 will not flow out. The setting of the one-way valve 36 in this embodiment enables the poreless inner barrel washing machine to realize bidirectional rotational washing.

[0226] In the dehydration mode, the rotational direction of the washing tub 1 is opposite to that of the water flow channel 3, and the washing tub 1 starts to rotate at a high speed in the reverse direction. When the rotational speed of the washing tub 1 is higher than 80 r / min, the one-way valve 36 is opened from the inside of the washing tub to the outside due to the action of a large centrifugal force. At this time, the water in the washing tub 1 flows out from the drainage structure 4, through the water flow channel 3, and out through the water throwing structure 5 to realize the dehydration of the washing machine.

[0227] In this embodiment, a one-way valve is provided on the inner cylinder, realizing the two-way washing function of the washing machine with a perforation-free inner cylinder, and the one-way valve has a simple structure, facilitating later maintenance and replacement.

[0228] The features and structures in the embodiments of the present invention can be combined with the structures and features of other embodiments, but it must be based on the premise that those skilled in the art can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0229] Embodiment 11

[0230] As Figures 46 - 48 shown, for the perforation-free washing tub provided in this embodiment, one end of the drainage structure 4 of the water flow channel 3 extends into the interior of the washing tub 1 through the front panel 6 of the washing tub. The water flow channel 3 is arranged to be vertically inserted into the interior of the front panel 6 of the washing tub, and inside the washing tub 1, the water flow channel 3 points towards the axis direction of the washing tub 1. One end of the water flow channel 3 inside the washing tub 1 is provided with the drainage structure 4, and a one-way valve 36 is provided on the drainage structure 4. Under the washing condition, when the rotational speed of the washing tub 1 is less than 80 r / min and the rotational direction of the washing tub 1 is the same as that of the water flow channel 3, the water in the washing tub 1 does not drain; when the rotational direction of the washing tub 1 is opposite to that of the water flow channel 3, due to the relatively low rotational speed of the washing tub 1, the centrifugal force received by the one-way valve 36 is also relatively small and it remains in the closed state, and at this time, the water in the washing tub 1 will not flow out either.

[0231] Under the dehydration condition, the rotational direction of the washing tub 1 is opposite to that of the water flow channel 3. As the rotational speed of the washing tub 1 gradually increases, when the rotational speed of the washing tub 1 is higher than 80 r / min, the one-way valve 36 is opened from the inside out due to the action of a relatively large centrifugal force. At this time, the water in the washing tub 1 flows out from the drainage structure 4, through the water flow channel 3, and via the water throwing structure 5, realizing the dehydration of the washing machine.

[0232] In summary, the one-way valve 36 is opened by the centrifugal force generated when the washing tub 1 rotates at a high speed. Therefore, the direction of the drainage structure 4 must point towards the axis of the washing tub.

[0233] As some embodiments of the present invention, when one end of the drainage structure 4 of the water flow channel 3 extends into the interior of the washing tub 1 through the front panel 6 of the washing tub, the body of the water flow channel 3 can be arranged on the outer surface of the front panel 6 of the washing tub, or can be arranged at a position on the side wall of the washing tub 1 close to the front panel 6.

[0234] As Figure 35As shown, in some embodiments of the present invention, the present invention further provides a drum washing machine with bidirectional rotation. The drum washing machine includes the washing tub 1 and the water flow channel 3 described above. A valve is provided at one end of the water flow channel 3. It further includes an outer tub 20, a cabinet 21 and a door cover 24. The outer tub 20 is concentrically arranged with the washing tub 1. A drain port 25 is provided at the bottom of the outer tub 20, and a drain port 26 is connected to the drain port 25. The drain port 26 passes through the cabinet 21 and extends out; it further includes a water inlet channel, and a rapid heating device is provided on the water inlet channel; the water inlet channel includes a water inlet hose 30 and a water spraying hose 22. The water inlet hose 30 is arranged at the top inside the cabinet 21. One end of it is installed on the cabinet 21 through a water inlet valve 19, and the other end is communicated with the water spraying hose 22 through a detergent box 29 installed on the cabinet 21. The water spraying hose 22 is arranged at the front inside of the cabinet 21 and is mounted on the door cover 24 through a water spraying nozzle 23. The water sprayed from the water spraying nozzle 23 can enter the washing tub 1 through the water inlet 28 of the tub cover 10; the water spraying nozzle 23 and the water spraying hose 22 are connected through a union joint.

[0235] The features and structures in the embodiments of the present invention can be combined with the structures and features of other embodiments, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0236] Embodiment 12

[0237] This embodiment provides a drainage method for a washing machine with bidirectional washing, including the following steps:

[0238] Turn on the washing machine, and the user selects one of the washing mode, rinsing mode or dehydration mode;

[0239] In the washing mode, the washing tub starts to rotate. The rotation speed of the washing tub is not greater than 80 r / min. The valve on the water flow channel is in the closed state. The rotation direction of the washing tub is the same as or opposite to the direction of the water flow channel 3. The water inlet valve 19 is opened, and tap water is injected into the washing tub through the water inlet channel until it reaches the liquid level height set by the washing program. After the injection is completed, the washing tub continues to rotate bidirectionally and starts washing;

[0240] In the dehydration mode, the washing tub rotates unidirectionally along the direction opposite to the direction of the water flow channel 3. When the rotation speed of the washing tub is greater than 80 r / min, the valve of the water flow channel is opened, and the water in the washing tub flows out through the water flow channel.

[0241] Preferably, the included angle α formed by the two ends of the water flow channel 3 and the central axis of the washing tub on the circular projection of the washing tub 1 ranges from 90° to 360°, preferably from 100° to 180°.

[0242] Further, the rinsing condition is the same as the washing condition.

[0243] The features and structures in the embodiments of the present invention can be combined with the structures and features of other embodiments, but it must be based on the realization by those of ordinary skill in the art. When the combination of technical solutions conflicts with each other or cannot be realized, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0244] The washing machine drainage method for two-way washing provided in this embodiment does not allow the water in the washing tub to flow between the washing tub and the outer tub during the washing process, which not only saves water consumption but also avoids secondary pollution of the clothes, achieving the effect of no water leakage during two-way rotation washing of the washing machine with a perforation-free inner tub.

[0245] Embodiment 13

[0246] As Figure 49 shown, this embodiment provides a washing machine including an inclined washing tub. A water flow channel 3 is provided at a position on the washing tub circumference 7 of the washing tub close to the washing tub rear plate 8, or a water flow channel 3 is provided at a position on the washing tub rear plate 8 close to the washing tub circumference 7. The structure or features of the water flow channel 3 are the same as those in other embodiments.

[0247] An elastic valve 35 is provided at one end of the water flow channel 3. The elastic valve is used for two-way rotation washing of the washing tub. The elastic valve 35 has the same structure or features as the elastic valve in other embodiments.

[0248] Among them, the elastic valve 35 is provided at the water throwing structure 4 of the water flow channel 3. Specifically, the structure of the elastic valve 35 includes a return spring 31, a metal ball 32, a sealing door 33, and a rotating pin 34. When the washing tub is stationary, under the action of the return spring 31, the sealing door 33 covers the outer surface of the water throwing structure 4 of the water flow channel 3. At this time, the elastic valve 35 is in a closed state, preventing the water in the water flow channel 3 from flowing out through the water throwing structure 4.

[0249] In the washing mode, if the rotation direction of the washing tub 1 is the same as that of the water flow channel 3, the elastic valve 35 closes, and the water in the washing tub 1 does not drain. Similarly, in the washing mode, when the rotation speed of the washing tub 1 is below 80 r / min and the rotation direction of the washing tub 1 is opposite to that of the water flow channel 3, the elastic valve 35 remains closed, and the water in the washing tub 1 does not drain. In this embodiment, the setting of the elastic valve 35 enables the inclined perforation-free inner barrel washing machine to achieve bidirectional rotational washing.

[0250] In the dehydration mode, the rotation direction of the washing tub 1 is opposite to that of the water flow channel 3, and the washing tub 1 starts to rotate at a high speed in the reverse direction. When the rotation speed of the washing tub 1 is higher than 80 r / min, the centrifugal force generated by the metal ball 32 overcomes the pulling force of the return spring 31, and the sealing door 33 opens. The water in the washing tub 1 flows out from the drainage structure 5, through the water flow channel 3, and via the water throwing structure 4. Moreover, the faster the washing tub 1 rotates, the greater the centrifugal force generated by the metal ball 32, the larger the opening angle of the sealing door 33, and the faster the water in the washing tub 1 flows out.

[0251] Preferably, when the water flow channel 3 is arranged at a position on the circumference of the washing tub 7 close to the rear panel 8 of the washing tub, the valve on the water flow channel 3 can also be set as a one-way valve 36, and the one-way valve 36 is arranged at one end of the water flow channel 3 close to the drainage structure 5.

[0252] The features and structures in the embodiments of the present invention can be combined with the structures and features of other embodiments, but it must be based on the premise that those skilled in the art can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0253] The inclined washing tub provided in this embodiment is convenient for users to pick up and place clothes, realizes bidirectional rotational washing, can effectively prevent the washing machine from leaking water, avoids secondary pollution of clothes, realizes automatic drainage, and has great popularization and application value.

[0254] Embodiment 14

[0255] Such as Figures 50 - 54As shown in the figure, the present invention provides a self - cleaning washing tub with a washing tub door, including a washing tub 1. The washing tub 1 is a washing tub with a water flow channel 3. One end of the water flow channel 3 is connected to the washing tub 1 through a drainage structure 4, and the other end of the water flow channel 3 is connected to a water - throwing structure 5. The water - throwing structure 5 is arranged outside the washing tub 1. The structure and characteristics of the water flow channel 3 are the same as those in other embodiments. A washing tub door 39, a fixing ring 37 and a hinge 38 are arranged at the front end of the washing tub 1. The fixing ring 37 is arranged on the front plate 6 of the washing tub 1 of the washing tub 1. The washing tub door 39 is connected to the fixing ring 37 through the hinge 38. The washing tub door 39 can rotate around the hinge 38, enabling the washing tub door 39 to be in an open or closed state relative to the washing tub 1.

[0256] A handle 40 is arranged on the washing tub door 39. The handle 40 is arranged on the washing tub door 39, on the side far from the hinge 38. A catch hook 43 and a locking spring 41 are arranged on the handle 40. A catch groove 44 is arranged on the fixing ring 37. The catch groove 44 cooperates with the catch hook 43. When the washing tub door 39 is pushed towards the fixing ring 37, the catch hook 43 can be caught in the catch groove 44 for fixation.

[0257] Preferably, a door seal 45 is arranged on the fixing ring 37. The door seal 45 is a rubber door seal. By arranging the door seal 45, the sealing degree between the washing tub door 39 and the washing tub 1 is increased, avoiding water leakage or seepage from the gap between the two and flowing into the space between the washing tub 1 and the outer tub.

[0258] Furthermore, the washing tub door 39 can rotate around the hinge 38 by a certain angle, facilitating the user to open or close the washing tub door 39. The rotation angle is preferably 30° - 150°, and preferably, the rotation angle is preferably 30° - 90°. The handle 40 and the hinge 38 are symmetrically distributed on the washing tub door 39, making it more convenient and labor - saving for the user to open the washing tub door 39.

[0259] Furthermore, the handle 40 can rotate arcuately relative to the washing tub door 39. The arcuate rotation can rotate outward relative to the washing tub door 39, or rotate arcuately upward or downward relative to the washing tub door 39, further improving the convenience of opening the washing tub door.

[0260] Furthermore, the washing tub door 39 can rotate integrally with the washing tub 1.

[0261] The features and structures in the embodiments of the present invention can be combined with the structures and features of other embodiments, but it must be based on the realization by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0262] Embodiment 15

[0263] Based on Embodiment 14, this embodiment further describes a self-cleaning washing tub with a washing tub door.

[0264] Preferably, a positioning pin 3901 is provided on the washing tub door 39. Correspondingly, a positioning hole 3701 is provided on the fixing ring 37. Under the action of the centrifugal force when the washing tub 1 rotates at a high speed, the positioning pin 3901 can be inserted into the positioning hole 3701. When the washing tub is stationary, the positioning pin 3901 is disengaged from the positioning hole 3701.

[0265] An elastic member 3902 is provided on the positioning pin 3901. When the washing tub 1 rotates at a high speed during dehydration, it drives the washing tub door 39 to rotate. Under the action of the centrifugal force, the positioning pin 3901 overcomes the elastic force of the elastic member 3902 and is inserted into the positioning hole 3701. The higher the rotation speed of the washing tub 1, the longer the length of the positioning pin 3901 inserted into the positioning hole 3701, and the firmer the fixation. When the washing tub 1 stops rotating, the positioning pin 3901 is disengaged from the positioning hole 3701 under the action of the elastic member 3902.

[0266] Working principle: The operator pushes the handle 40 to close the washing tub door 39, and the washing tub door 39 is fixed on the fixing ring 37 through the hook 43 and the locking spring 41. The door seal 45 makes the two sealed, and the washing tub door 39 can rotate with the washing tub 1. When the washing machine stops working, the operator pulls the handle 40 by hand to overcome the locking force of the locking spring 41, so that the hook 43 is disengaged from the hook groove 44, and the washing tub door 39 is opened, which is convenient for taking and putting clothes.

[0267] The features and structures in the embodiments of the present invention can be combined with the structures and features of other embodiments, but it must be based on the realization by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0268] The self-cleaning washing tub with a washing tub door of the present invention can operate under different water level states of low water level, medium water level and high water level, avoiding the phenomenon that the washing water splashes out of the washing tub and flows into the space between the inner and outer tubs during the washing process, improving the cleaning and rinsing capabilities of the drum washing machine, saving water and electricity, and achieving better washing effects.

[0269] Example 16

[0270] Based on Example 15, this example further describes a self - cleaning drum washing machine with a washing tub door.

[0271] As Figure 55 shown, the self - cleaning washing tub is arranged inside the cabinet 21. A magnet 42 is arranged on the handle 40 of the washing tub door 39, and a position sensor 46 is arranged at a position opposite to the magnet 42 on the door cover 24 of the washing machine. The position sensor 46 is connected to the main control computer board. In this example, the washing machine has the function of positioning the washing tub 1. When the washing tub 1 of the washing machine stops rotating, it is in the same position, and the washing tub door 39 on the washing tub 1 can be reliably opened.

[0272] Working principle: Close the washing tub door 39, and then close the door cover 24. The washing machine starts to run. First, it detects whether the door cover 24 is closed, and then senses whether the washing tub door 39 is closed through the position sensor 46. If the distance between the magnet 42 and the position sensor 46 on the door cover 24 is relatively close, it is determined that the washing tub door 39 is not fully latched, and the machine cannot run. At this time, the washing machine gives an alarm reminder, and the washing tub door 39 needs to be closed again. Only when the washing tub door 39 is fixed on the washing tub 1 as set, can the washing machine run normally;

[0273] If the distance between the magnet 42 and the position sensor 46 on the door cover 24 is relatively far, it is determined that the washing tub door 39 is fully latched, and the washing machine can run normally.

[0274] The features and structures in the embodiments of the present invention can be combined with the structures and features of other embodiments, but it must be based on what can be achieved by those of ordinary skill in the art. When the combination of technical solutions results in contradictions or cannot be achieved, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0275] Example 17

[0276] As Figures 1 - 55 shown, this example discloses a washing tub with a water flow channel. A water flow channel 3 is arranged on the washing tub 1. The water flow channel can rotate integrally relative to the washing tub 1. One end of the water flow channel 3 is connected to the inside of the washing tub, and the other end of the water flow channel 3 is arranged outside the washing tub 1. The washing water in the washing tub can be discharged to the outside of the washing tub 1 through the water flow channel 3. The included angles formed by the two ends of the water flow channel 3 and the central axis of the washing tub on the circular projection with the center axis of the washing tub 1 as the center of the circle are α, and the included angles formed by the two ends of the washing water surface 2 in the washing tub 1 and the central axis of the washing tub on the circular projection of the washing tub 1 are β, where α≧β.

[0277] Preferably, the value range of α is 90° to 360°, and the structure and characteristics of the water flow channel are the same as those of the water flow channels described in other embodiments.

[0278] In some embodiments of the present invention, the value range of α can also be 80°, 120°, 135°, 145°, 150°, 160°, 200° to 250°, 280°, 320°.

[0279] In some embodiments of the present invention, the multiple water flow channels 3 provided on the washing tub 1 can be arranged bidirectionally. That is, a part of the multiple water flow channels can be counterclockwise, and some other water flow channels are clockwise.

[0280] Preferably, both ends of the water flow channel 3 are on a circumference centered on the central axis of the washing tub, and the water flow channel 3 is arranged in an arc shape.

[0281] The water flow channel can be formed on the washing tub 1 by rolling, or can be formed by a water guide groove structure, and the water guide groove structure includes a circumferential water guide groove 13 and / or an end water guide groove 16.

[0282] Further, the washing tub 1 includes a washing tub front plate 6, a washing tub circumference 7, and a washing tub rear plate 8. The water flow channel 3 provided on the washing tub circumference 7 is a spiral water flow channel 18, and both ends 18 of the spiral water flow channel are arranged in a spiral shape.

[0283] Preferably, a plurality of water flow channels 3 are provided on the washing tub 1.

[0284] Further, a valve is provided at one end of the water flow channel 3, and the valve can be opened under the action of centrifugal force when the washing tub rotates at a high speed. The rotation speed of the washing tub when rotating at a high speed is 80 r / min. The valve has the same structure and characteristics as the valves in other embodiments.

[0285] Specifically, the valve can be an elastic valve 35 and / or a one-way valve 36.

[0286] Preferably, a washing tub door 39 is provided on the washing tub 1. The washing tub door 39 is hingedly connected to the washing tub, and the washing tub door 39 can rotate around the hinge 38, enabling the washing tub door 39 to be in an open or closed state relative to the washing tub 1.

[0287] Further, a handle 40 and a positioning pin 3901 are provided on the washing tub door 39. The handle 40 is arranged on the washing tub door 39, on the side away from the hinge 38. A catch hook 43 and a locking spring 41 are provided on the handle 40. A fixing ring 37 is arranged on the front panel 6 of the washing tub. A catch groove 44 and a positioning hole 3701 are provided on the fixing ring 37. The catch groove 44 is matched with the catch hook 43. When the washing tub door 39 is pushed towards the fixing ring 37, the catch hook 43 can be engaged into the catch groove 44 for fixation.

[0288] This embodiment also discloses a washing machine with a washing tub having a water flow channel, including the above-mentioned washing tub 1. An outer tub 20 is arranged outside the washing tub 1. The water throwing structure 5 of the water flow channel 3 is arranged between the washing tub 1 and the outer tub 20. A drain port 25 is provided at the bottom of the outer tub 20, and a drain pipe 26 is connected to the drain port 25.

[0289] This embodiment also discloses a drainage method for a drum washing machine. The drum washing machine includes a washing tub 1. A water flow channel 3 is arranged on the washing tub 1. One end of the water flow channel 3 is communicated with the washing tub 1. A circulation hole is arranged at the connection between the washing tub 1 and the water flow channel 3, and there are no holes at other positions. The other end of the water flow channel 1 is formed outside the washing tub. The projection of the water flow channel 3 on a circle with the central axis of the washing tub as the center is arc-shaped or circular. The included angle formed by the two ends of the water flow channel 3 and the central axis of the washing tub on the circular projection of the washing tub 1 is α, and the included angle formed by the two ends of the washing water surface 2 in the washing tub 1 and the central axis of the washing tub on the circular projection of the washing tub 1 during washing is β, α≧β. The washing machine rotates unidirectionally under washing conditions, drainage conditions, and dehydration conditions. The clockwise direction formed from the connection between the water flow channel 3 and the washing tub to the end of the water flow channel 3 is the same as the clockwise direction of the rotation of the washing tub during washing, and the rotation direction of the washing tub under washing conditions is opposite to the rotation direction of the washing tub under drainage conditions. The rotation direction of the washing tub under drainage conditions is the same as the rotation direction of the washing tub under dehydration conditions.

[0290] The present invention also discloses a drainage method for a drum washing machine. A water flow channel is provided on the washing tub. A valve is provided at one end of the water flow channel 3, or the washing machine includes the above-mentioned washing tub. The drum washing machine includes a washing tub 1, and a water flow channel 3 is provided on the washing tub 1. One end of the water flow channel 3 is communicated with the washing tub 1, and a circulation hole is provided at the connection between the washing tub 1 and the water flow channel 3, and there are no holes at other positions. The other end of the water flow channel 1 is formed outside the washing tub. The projection of the water flow channel 3 on a circle centered on the central axis of the washing tub is arc-shaped or circular. The included angle formed by the two ends of the water flow channel 3 and the central axis of the washing tub on the circular projection of the washing tub 1 is α, and the included angle formed by the two ends of the washing water surface 2 in the washing tub 1 and the central axis of the washing tub on the circular projection of the washing tub 1 during washing is β, and α≧β. The washing machine can rotate unidirectionally or bidirectionally back and forth during the washing condition. The washing machine rotates unidirectionally both during the drainage condition and the dehydration condition. When the washing machine rotates unidirectionally during the washing condition, the clockwise direction formed from the connection between the water flow channel 3 and the washing tub to the end of the water flow channel 3 is the same as the clockwise direction of the rotation of the washing tub during washing, and the rotation direction of the washing tub during the washing condition is opposite to the rotation direction of the washing tub during the drainage condition. The rotation direction of the washing tub during the drainage condition is the same as the rotation direction of the washing tub during the dehydration condition. When the washing machine rotates bidirectionally during the washing condition, during the drainage condition and the dehydration condition of the washing machine, the clockwise direction formed from the connection between the water flow channel 3 and the washing tub to the end of the water flow channel 3 is opposite to the clockwise rotation direction of the washing tub 1 during the drainage condition and the dehydration condition.

[0291] Embodiment 18

[0292] As Figures 1 - 59 As shown, the present invention discloses a drum washing machine with self-cleaning function, including a washing tub 1 and an outer tub 20. The washing tub 1 and the outer tub 20 are concentrically arranged. A water flow channel 3 is provided on the washing tub 1. The water flow channel 3 can rotate integrally relative to the washing tub 1. A rotating door body 59 is provided at the front end of the outer tub 20. The rotating door body 59 includes a first door body 47 and a second door body 52. The first door body 47 can be assembled with the outer tub 20. The washing tub 1 cooperates with the second door body 52. The second door body 52 is rotatably arranged on the first door body 47. The second door body 52 is used to block the washing tub 1, and the second door body 52 can rotate with the washing tub 1.

[0293] One end of the water flow channel 3 is connected to the inside of the washing tub, and the other end of the water flow channel 3 is arranged outside the washing tub 1. The washing water in the washing tub can be discharged to the outside of the washing tub 1 through the water flow channel 3. The included angles formed by the two ends of the water flow channel 3 and the central axis of the washing tub on the circular projection with the central axis of the washing tub 1 as the center of the circle are α, and the included angles formed by the two ends of the washing water surface 2 in the washing tub 1 and the central axis of the washing tub on the circular projection of the washing tub 1 during washing are β, and α≥β.

[0294] Further, the second door body 52 is arranged on the first door body 47 through a rotating device 55.

[0295] In this embodiment, a rotating door body 59 is arranged at the front end of the outer tub. When the rotating door body 59 of the drum washing machine is closed, the first door body 47 is fixed on the outer tub 20, and the second door body 52 cooperates with the washing tub 1. When the washing machine is running, the second door body 52 is fixed on the first door body 47, and through the rotating device 55 between the first door body 47 and the second door body 52, the second door body 52 rotates with the washing tub 1. Since the second door body 52 completely seals the washing tub 1, the water level of the washing water in the washing tub 1 can be freely adjusted, breaking through the limitation in the traditional drum washing machine 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 1, solving the disadvantage in the prior art that the drum washing machine needs to drain water and rinse multiple times, and improving the washing efficiency of the drum washing machine; moreover, the water flow channel 3 arranged on the washing tub and the setting of α≥β enable the water flow channel to complete the washing condition, dehydration condition, and drainage condition through one-way rotation, thereby ensuring that the washing tub with a one-way rotating water flow channel does not leak water during the washing condition, and discharging the washing water in the washing tub during the drainage condition and dehydration condition, avoiding the back-and-forth flow of the washing water between the inner and outer tubs and causing secondary pollution. At the same time, it also perfectly solves a series of sealing problems brought by the instability of the sliding seal and the shaking of the washing tub when the water flow space of a similar isolation channel rotates with the washing tub.

[0296] Preferably, the water flow channel 3 adopts any one of the water flow channels in other embodiments.

[0297] The washing tub 1 includes a washing tub front plate 6, a washing tub circumference 7, and a washing tub rear plate 8. The water flow channel 3 is arranged on any one or more of the washing tub front plate 6, the washing tub circumference 7, and the washing tub rear plate 8.

[0298] Further, a fixed shaft 48 is arranged on the first door body 47, a through hole 53 is arranged on the second door body 52, and the rotating device 55 is arranged in the through hole 53. The second door body 52 is sleeved on the fixed shaft 48 through the rotating device 55 and rotates.

[0299] Preferably, the rotating device 55 includes a gasket 56 and a bearing 57. The outer ring of the bearing 57 is fixedly connected to the second door body 52, and the inner ring of the bearing 57 is fixedly connected to the fixed shaft 48. The gasket 56 is arranged between the first door body 47 and the second door body 52. At this time, when the second door body 52 rotates, the gasket 56 keeps the rotating plane where the second door body 52 is located in the same plane without deviation, avoiding friction or damage to the first door body 47 when the second door body 52 rotates.

[0300] Both the first door body 47 and the second door body 52 are circular. The radius of the second door body 52 is smaller than that of the first door body 47. The first door body 47 and the second door body 52 are concentrically arranged, and the rotating device 55 is arranged at the center of the first door body 47 and the second door body 52.

[0301] In order to improve the rotating effect of the rotating door body structure, a gap with a certain distance is provided between the first door body 47 and the second door body 52, so that when the second door body 52 rotates on the first door body 47, only friction is generated between the rotating devices 55. Preferably, the first door body 47 and the second door body 52 can also be hermetically arranged, and a layer of lubricating oil is provided between them to improve the rotation of the second door body 52.

[0302] Preferably, a sealing device 54, such as a sealing strip, is arranged at the outer edge of the second door body 52. When the rotating door body 59 is closed, the second door body 52 seals the washing tub 1, and the sealing strip can improve the sealing performance between the two, avoiding the leakage or outflow of washing water from the washing tub 1 during the operation of the drum washing machine.

[0303] Preferably, the width of the sealing device 54 gradually increases from the second door body 52 to the first door body 47 direction. The second door body 52 and the sealing device 54 together form a frustum-shaped structure. When the rotating door body 59 is closed, the sealing device 54 can provide a larger contact area with the washing tub 1, further improving the sealing performance between the second door body 52 and the washing tub 1.

[0304] Furthermore, a first flanging 49 is arranged on the first door body 47, and the first flanging 49 protrudes towards the washing tub 1. A second flanging 2003 is arranged on the lid of the outer tub 20, and the second flanging 2003 protrudes towards the side close to the first door body 47;

[0305] When the rotating door body 59 is closed, the first flange 49 cooperates with the second flange 2003. The inner circle diameter of the first flange 49 is equal to or slightly larger than the outer circle diameter of the second flange 2003. When the first door body 47 is closed, the first flange 49 and the second flange 2003 are closely fitted, which can increase the sealing performance between the first door body 47 and the outer barrel 20, prevent the washing water from leaking out of the washing machine during the operation of the washing tub 1, and reduce the noise generated during the operation of the drum washing machine.

[0306] Furthermore, a hinge 38 is provided on the first door body 47. At the other end of the hinge 38, a lock 50 is provided on the first door body 47. The first door body 47 and the outer barrel 20 are opened or closed by means of hinging and locking. When the drum washing machine is operating, the lock 50 fixes the first door body 47 on the outer barrel 20, and at this time, the rotating door body 59 of the washing machine cannot be opened. When the washing is over, the lock 50 is opened, and at this time, the rotating door body 59 can be opened for the next operation of the drum washing machine.

[0307] Preferably, a handle 40 is provided on the first door body 47. When the user needs to open the drum washing machine, an external force is applied to the handle 40 to open the lock 50, and the rotating door body 59 is opened for the user to use.

[0308] Furthermore, a water inlet device is provided on the rotating door body 59, and the water inlet device is used to inject water into the washing tub 1 through the rotating door body 59.

[0309] The fixed shaft is a hollow rotating shaft, and the water inlet device includes a water inlet pipe, and the water inlet pipe is communicated with the hollow channel of the fixed shaft.

[0310] Preferably, the water inlet pipe 58 can also be directly connected to the hollow fixed shaft 48. The water inlet mode of the washing machine is simple and direct, which is convenient for use.

[0311] Alternatively, the water inlet pipe 58 is directly communicated with the fixed shaft 48 or the water inlet pipe 58 is communicated with the fixed shaft 48 through a water inlet passage 51. The water inlet passage 51 is formed on the first door body 47 or the water inlet passage 51 is formed between the first door body 47 and the second door body 52.

[0312] Specifically, a water inlet pipe 58 is provided on the first door body 47. The water inlet pipe 58 is communicated with an externally connected water guide pipe. An inlet water passage 51 is provided on the first door body 47, and the water inlet pipe 58 is communicated with the inlet water passage 51. The first door body 47 and the second door body 52 are concentrically arranged. The fixed shaft 48 provided on the first door body 47 is a hollow rotating shaft. The inlet water passage 51 is connected to the fixed shaft 48. Water flows from the water inlet pipe 58 through the inlet water passage 51 and then enters the hollow channel of the fixed shaft 48 to reach the washing tub 1 for water injection.

[0313] The first door body 47 can also be of an internally hollow structure. The inlet water passage 51 is arranged between the hollow first door bodies 47, which can ensure the beauty of the rotating door body 59 while realizing water inlet.

[0314] Preferably, the water inlet pipe 58 is arranged at the hinge 14 of the first door body 47. When the rotating door body 59 is opened or closed, the position of the water inlet pipe 58 is fixed, which is convenient for water flow. The inlet water passage 51 is arranged on the first door body 47. One end of it is communicated with the water inlet pipe 58, and the other end is communicated with the fixed shaft 48 at the center of the first door body 47.

[0315] Preferably, the inlet water passage 51 is hidden between the first door body 47 and the second door body 52. A groove is arranged between the first door body 47 and the second door body 52 to accommodate the inlet water passage 51. The side of the first door body 47 facing the user is flat, making the appearance of the rotating door body 59 beautiful and generous.

[0316] In order to facilitate the installation between the washing tub 1 and the outer tub 20, the outer tub 20 is set as a first outer tub 2001 and a second outer tub 2002 that can be disassembled and combined. When the washing tub 1 is installed, the first outer tub 2001 and the second outer tub 2002 can be installed successively, which is convenient for the production of the drum washing machine.

[0317] Embodiment 19

[0318] Based on Embodiment 18, this embodiment improves the position of the water inlet device on the washing tub 1.

[0319] As Figure 60 shown, the rear end of the washing tub 1 is connected to the power input device of the drum washing machine. The central rotating shaft 60 of the drum washing machine has an internal hollow channel. The water inlet pipe 58 of the water inlet device is communicated with the central rotating shaft 60, and water enters the washing tub 1 from the central rotating shaft 60 for washing.

[0320] As some examples of the present invention, the water inlet mode of the water inlet device to 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 to water inlet into the washing tub from the rear end of the washing tub.

[0321] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A drum washing machine that does not require cleaning, characterized in that, It includes a washing tub (1) and an outer tub (20). A water flow channel (3) is provided on the washing tub (1), and the water flow channel (3) is tightly connected to the outer wall of the washing tub and rotates integrally with the washing tub (1). One end of the water flow channel (3) is connected to the inside of the washing tub, and the other end of the water flow channel (3) is provided outside the washing tub (1). The washing water in the washing tub can be discharged to the outside of the washing tub (1) through the water flow channel (3). The included angles formed by the two ends of the water flow channel (3) and the central axis of the washing tub on the circular projection with the central axis of the washing tub (1) as the center of the circle are α, and the included angles formed by the two ends of the washing water surface (2) in the washing tub (1) and the central axis of the washing tub on the circular projection of the washing tub (1) during washing are β. α≥β, and the value range of α is 90 degrees - 360 degrees. The two ends of the water flow channel (3) are on the circumference with the central axis of the washing tub as the center of the circle, and the water flow channel (3) is arranged in an arc shape. The arc length of the water flow channel (3) is greater than the arc length formed by the contact between the washing water surface (2) and the washing tub. Circulation holes are provided at the connection between the washing tub and the water flow channel (3), and there are no holes at other positions. Multiple groups of water flow pipeline devices are provided on the circumference (7) of the washing tub, and each group of water flow pipeline devices is provided with multiple water flow pipelines. A handle (40) and a positioning pin (3901) are provided on the washing tub door (39). The handle (40) is provided on the washing tub door (39), and the handle (40) is provided on the side away from the hinge (38). A hook (43) and a locking spring (41) are provided on the handle (40). A fixing ring (37) is provided on the front panel (6) of the washing tub. A card groove (44) and a positioning hole (3701) are provided on the fixing ring (37). The card groove (44) cooperates with the hook (43). When the washing tub door (39) is pushed towards the fixing ring (37), the hook (43) can be engaged into the card groove (44) for fixation.

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