Washing machine and control method therefor

Abstract

Disclosed in the present invention are a washing machine and a control method therefor. The washing machine comprises an outer tub, wherein a water passage opening is provided in the bottom wall of the outer tub; an inner tub, which is arranged in the outer tub and can contain water independently, wherein a water flow opening and a valve component used for opening and closing the water flow opening are provided on the bottom wall of the inner tub; and a water sealing sleeve, which is arranged between the bottom wall of the inner tub and the bottom wall of the outer tub, is sleeved on the outer side of a shaft of the inner tub, and is internally provided with a hollow vertically penetrating channel, wherein the bottom end of the water sealing sleeve is in sealed connection with the bottom wall of the outer tub; the water passage opening is in communication with the hollow channel; the top end of the water sealing sleeve can move up and down to abut against and be separated from the valve component, so as to open and close the water passage opening; and when the top end of the water sealing sleeve moves upwards to abut against the valve component, the water sealing sleeve forms sealing with the part of the bottom wall of the inner tub around the periphery of the water flow opening, and the water flow opening is in communication with the water passage opening by means of the hollow channel. In the washing machine of the present invention, a water intake flow of the washing machine and a drainage water flow of the inner tub enter and exit from the inner tub by means of only the hollow channel in the water sealing sleeve, and do not enter a space between the inner tub and the outer tub, thereby ensuring cleanliness and sterility between the tubs.

Description

A washing machine and a control method thereof TECHNICAL FIELD

[0001] The present application belongs to the technical field of washing machines, and particularly relates to a washing machine and a control method thereof. BACKGROUND

[0002] A conventional washing machine mostly comprises an inner tub and an outer tub which are in communication with each other. When the washing machine is working, the outer tub contains washing water, and the inner tub contains laundry to be washed. The washing water can exist between the inner tub and the outer tub. When the washing machine is working, the space between the inner tub and the outer tub cannot be fully utilized, resulting in the waste of a large amount of washing water. Meanwhile, with the increase of the working time of the washing machine, dirt and lint carried in the washing water are likely to be retained in the space between the inner tub and the outer tub, and are difficult to clean, resulting in bacteria and odor generated in the long-term use, and affecting the hygiene of the laundry.

[0003] To solve the above problems, the prior art proposes a washing machine without a dehydration hole on the inner tub, so that the inner tub can contain water independently during the washing / rinsing process, and no water exists between the inner tub and the outer tub. The washing machine with the water-free structure between the tubs can save the amount of washing water, and avoid the breeding of dirt between the tubs. However, at the same time, the water inlet mode and the water drainage mode of the conventional washing machine are no longer applicable in the washing machine with the water-free structure between the tubs, because there is no water in the outer tub.

[0004] Therefore, some new structures are proposed. An axial sealing structure is arranged between the bottom wall of the inner tub and the bottom wall of the outer tub. However, the sealing structure cannot ensure that the water inlet flow and the water outlet flow of the inner tub do not contact the lower surface of the bottom wall of the inner tub and the upper surface of the bottom wall of the outer tub.

[0005] Therefore, the present application is proposed. SUMMARY

[0006] The present application aims to overcome the deficiencies of the prior art, and provides a washing machine in which the inner tub can contain water independently, and the water inlet flow and the water outlet flow do not enter between the inner tub and the outer tub.

[0007] The present application also provides a control method of the above washing machine, so that the water inlet flow and the water outlet flow of the inner tub only enter and exit the inner tub through the hollow channel in the water sealing sleeve, and do not enter between the inner tub and the outer tub, thereby ensuring the cleanliness and sterility between the tubs.

[0008] To solve the above technical problems, the basic idea of the technical scheme of the present application is as follows:

[0009] The present application provides a washing machine, which comprises:

[0010] The outer tub has a water passing opening on the bottom wall.

[0011] An inner drum is arranged in the outer drum and can independently hold water, a water passage is arranged on a bottom wall of the inner drum, and a valve member is arranged to open and close the water passage;

[0012] A water sealing sleeve is arranged between the bottom wall of the inner drum and the bottom wall of the outer drum and is sleeved on the outer side of the inner drum shaft, and the water sealing sleeve has a hollow passage penetrating from top to bottom inside the water sealing sleeve;

[0013] The bottom end of the water sealing sleeve is sealingly connected to the bottom wall of the outer drum, the water passage is in communication with the hollow passage, and the top end of the water sealing sleeve can move up and down to abut against or separate from the valve member to open and close the water passage;

[0014] When the top end of the water sealing sleeve moves up to abut against the valve member, the bottom wall of the inner drum around the water passage is sealingly connected, and the water passage and the water passage are in communication through the hollow passage.

[0015] According to the cooperation of the water sealing sleeve and the valve member, the water flow of the washing machine and the water flow of the inner drum are only in and out of the inner drum through the hollow passage in the water sealing sleeve, and do not enter between the inner drum and the outer drum, so that the cleaning and sterility between the drums are ensured.

[0016] Further, the water sealing sleeve comprises an inner water sealing sleeve that can stretch up and down and a water sealing ring connected to the top end of the inner water sealing sleeve.

[0017] When the inner water sealing sleeve stretches up, the top end abuts against the valve member to push the valve member to open the water passage, and the water sealing ring moves up with the top end of the inner water sealing sleeve to sealingly connect the bottom wall of the inner drum around the water passage.

[0018] In the above scheme, the stretchable inner water sealing sleeve and the water sealing ring realize better sealing of the hollow passage, and further realize that the water flow of the washing machine and the water flow of the inner drum are only in and out of the inner drum through the hollow passage of the water sealing sleeve, without entering between the inner drum and the outer drum.

[0019] Further, the water sealing sleeve comprises an outer water sealing sleeve sleeved on the outer side of the inner water sealing sleeve, the top end of the outer water sealing sleeve is sealingly connected to the top end of the inner water sealing sleeve, and the bottom end of the outer water sealing sleeve is sealingly connected to the bottom wall of the outer drum.

[0020] The inner side of the inner water sealing sleeve forms the hollow passage, a sealing cavity is formed between the outer water sealing sleeve and the inner water sealing sleeve, and a driving mechanism is arranged in the sealing cavity to drive the inner water sealing sleeve to stretch up and down.

[0021] In the above scheme, the driving mechanism is arranged in the sealing cavity between the outer water jacket and the inner water jacket, so that the water jacket can automatically move up and down, and cooperate with the valve part to block and guide the water inlet of the inner barrel, and effectively prevent the driving mechanism from being damaged due to contact with water.

[0022] In a further scheme of the present application, the driving mechanism comprises a driving device and an annular transmission member sleeved between the inner water jacket and the outer water jacket, and the output shaft of the driving device is in transmission connection with the annular transmission member, and the annular transmission member is in transmission connection with the top end of the inner water jacket.

[0023] The annular transmission member moves up and down to drive the inner water jacket to move up and down.

[0024] In the above scheme, the output shaft of the driving device such as a motor can drive the inner water jacket to move up and down through the annular transmission member.

[0025] In a further scheme of the present application, the output shaft of the driving device and the annular transmission member are provided with matched transmission structures, and the transmission mechanism switches the rotation of the output shaft to the up-down movement of the annular transmission member.

[0026] The annular transmission member is fixed to the top end of the inner water jacket.

[0027] In a further scheme of the present application, the driving mechanism comprises a fixed ring seat, the bottom end of the fixed ring seat is fixed to the bottom wall of the outer barrel, and the fixed ring seat extends along the axial direction of the outer barrel.

[0028] The annular transmission member is sleeved outside the fixed ring seat or is inserted inside the fixed ring seat and is in threaded connection with the fixed ring seat, or the top end of the fixed ring seat is provided with a first guide wall, the bottom end of the annular transmission member is provided with a second guide wall, and the inclined top surface of the first guide wall in an upward direction contacts and supports the inclined bottom surface of the second guide wall in a downward direction.

[0029] The top end of the outer water jacket and the top end of the inner water jacket are in sealing connection with a bearing member, and the annular transmission member is connected with the bearing member.

[0030] The driving device drives the annular transmission member to rotate, and the annular transmission member moves up and down in rotation along the threads of the fixed ring seat or along the inclined top surface of the first guide wall.

[0031] In the above scheme, the annular transmission member is ensured to move up and down stably.

[0032] In a further scheme of the present application, the top end of the water sealing ring is higher than the bearing member.

[0033] When the inner water jacket moves up and down, the bearing member is spaced from the bottom wall of the inner barrel.

[0034] In the above scheme, the water seal ring avoids the contact between the bearing and the bottom wall of the inner drum, thereby avoiding the abrasion.

[0035] Further, the valve member comprises:

[0036] A valve cap is arranged inside the inner drum to block the water passage;

[0037] A connecting rod is arranged in the water passage, and the upper end of the connecting rod is fixedly connected with the valve cap;

[0038] A reset member is sleeved on the connecting rod, and the upper end of the reset member abuts against the bottom wall of the inner drum around the water passage, and the lower end of the reset member is fixedly connected with the lower end of the connecting rod.

[0039] In the above scheme, the connecting rod, the valve cap and the reset member form a top-open valve member, so that the upward movement direction of the valve member for opening the water passage is opposite to the direction of the water pressure, and the water pressure assists the valve member to stably block the water passage.

[0040] Further, the washing machine comprises a water level detection device communicated with the water passage, and / or a water inlet pipeline communicated with the water passage, and / or a water outlet pipeline communicated with the water passage.

[0041] In the above scheme, the water inlet of the inner drum, the water outlet of the inner drum and / or the water level detection of the inner drum are realized by the cooperation of the water seal sleeve and the valve member.

[0042] The application further provides a control method of the washing machine, comprising:

[0043] The washing machine controls the upward movement of the top end of the water seal sleeve until the top end of the water seal sleeve abuts against the valve member, the valve member opens the water passage, the top end of the water seal sleeve is sealed with the bottom wall of the inner drum around the water passage, and the water passage and the water passage are communicated through the hollow channel in the water seal sleeve.

[0044] The washing machine controls the downward movement of the top end of the water seal sleeve until the top end of the water seal sleeve is separated from the valve member, the valve member blocks the water passage, and the top end of the water seal sleeve is separated from the bottom wall of the inner drum around the water passage.

[0045] In the above scheme, the water flow does not flow to the inter-drum during the water inlet and water outlet processes of the washing machine, thereby avoiding the dirt of the clothes entering the inter-drum with the water flow, and better ensuring the cleanliness and sterility of the inter-drum.

[0046] After adopting the above technical scheme, the application has the following beneficial effects compared with the prior art.

[0047] 1. By the cooperation of the water jacket and the valve part, the water inflow of the washing machine and the water outflow of the inner drum only pass through the hollow channel in the water jacket to the inner drum, and do not enter the space between the inner drum and the outer drum, thus ensuring the cleanliness and sterility of the space between the drums;

[0048] 2. By setting the driving mechanism in the sealing cavity between the outer water jacket and the inner water jacket, the water jacket can be automatically moved up and down, and the valve part can be blocked and connected to the water inlet of the inner drum, thus effectively preventing the driving mechanism from being damaged by water;

[0049] 3. By the connection rod, the valve cap and the reset part, the valve part is formed as a top opening type, the upward movement direction of the valve part opening the water inlet is opposite to the direction of the water pressure, and the water pressure assists the valve part to stably block the water inlet;

[0050] 4. The water jacket has simple structure and remarkable effect, and is suitable for popularization and use.

[0051] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings. DETAILED DESCRIPTION

[0052] The accompanying drawings are part of the present application, which are used to provide further understanding of the present application, the schematic embodiments of the present application and the description thereof are used to explain the present application, but do not constitute improper limitation on the present application. Obviously, the accompanying drawings in the following description are only some embodiments, and other drawings can be obtained by those skilled in the art without creative labor. In the drawings:

[0053] Fig. 1 is a structure schematic diagram of the washing machine in the water inflow process and the water outflow process in the embodiment of the present application;

[0054] Fig. 2 is a partial structure schematic diagram of the part A in Fig. 1 of the washing machine in the embodiment of the present application;

[0055] Fig. 3 is a structure schematic diagram of the washing machine in the washing process and the dehydration process in the embodiment of the present application;

[0056] Fig. 4 is a partial structure schematic diagram of the part B in Fig. 3 of the washing machine in the embodiment of the present application.

[0057] Main elements in the figure are explained as follows: 1, inner drum; 11, water inlet; 12, valve part; 121, valve cap; 122, connecting rod; 123, reset part; 13, dewatering port; 2, outer drum; 21, water passing port; 22, drainage port; 3, balance ring; 41, inner drum shaft; 42, motor reducer set; 43, pulsator; 5, water sealing cover; 51, driving mechanism; 511, driving device; 512, output shaft; 513, spring part; 514, fixed ring seat; 515, annular transmission part; 516, bearing part; 52, water sealing ring; 53, annular support part; 54, inner water sealing cover; 55, outer water sealing cover; 61, water sealing cavity; 62, connecting pipeline; 63, drainage connecting pipeline; 64, drainage pipeline; 71, drainage valve; 72, traction device; 81, air chamber; 82, air chamber nozzle; 83, pressure guide pipe; 84, water level detection device.

[0058] It should be noted that the drawings and the written description are not intended to limit the scope of the present application in any way, but are merely to illustrate the concept of the present application to those skilled in the art. DETAILED DESCRIPTION

[0059] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments will be described clearly and completely below with reference to the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0060] In the description of the present application, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are merely for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0061] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0062] As shown in FIGS. 1-4, the present application provides a washing machine and a control method thereof, by cooperation of the water sealing sleeve 5 and the valve component 12, the water inflow of the washing machine and the water outflow of the inner drum 1 only pass through the hollow passage in the water sealing sleeve 5 to enter or exit the inner drum 1, without entering between the inner drum 1 and the outer drum 2, which ensures the cleanliness and sterility between the drums.

[0063] Embodiment One

[0064] As shown in FIGS. 1-4, the present embodiment provides a washing machine, which comprises: an outer drum 2, having a water passing port 21 on the bottom wall; an inner drum 1, which is independently arranged to hold washing water in the outer drum 2, and the bottom wall of the inner drum 1 is provided with a water passing port 11, and a valve component 12 movably arranged at the water passing port 11, which is used to open or close the water passing port 11; a water sealing sleeve 5, which is arranged between the bottom wall of the inner drum 1 and the bottom wall of the outer drum 2, and the inside of the water sealing sleeve 5 is a hollow passage vertically through, and the water sealing sleeve 5 is sleeved on the outer periphery of the inner drum shaft 41; the bottom end of the water sealing sleeve 5 is sealingly connected with the bottom wall of the outer drum 2, and the water passing port 21 is communicated with the hollow passage, and the top end of the water sealing sleeve 5 can move up and down, and abuts against or separates from the valve component 12 to open or close the water passing port 11; when the top end of the water sealing sleeve 5 moves up and abuts against the valve component 12, it also sealingly connects with the bottom wall of the inner drum 1 at the outer periphery of the water passing port 11, and the hollow passage in the water sealing sleeve 5 forms a water passing passage which communicates the water passing port 11 and the water passing port 21.

[0065] The inner drum 1 in the present embodiment adopts a "non-porous inner drum" structure design, that is, the part of the drum wall of the inner drum 1 below the highest water level is a closed structure, and no dehydration port 13 is arranged, only a circle of dehydration ports 13 is arranged at the drum opening of the inner drum 1, and preferably, the dehydration ports 13 are arranged at the lower part of the balance ring 3 of the drum opening, and the dehydration ports 13 are visually shielded by the balance ring 3 to form a "non-porous inner drum".

[0066] The "non-porous inner drum" of the washing machine in the present embodiment can independently hold washing water, and in the washing process of the washing machine, the washing water only exists in the inner drum 1, and there is no water between the inner drum 1 and the outer drum 2, which greatly reduces the washing water consumption of the washing machine, saves water resources, and at the same time, avoids the possibility of dirt adhering between the inner drum 1 and the water collecting device, greatly improves the user's health and user experience.

[0067] The outer drum 2 in the present embodiment can adopt the outer drum structure of a conventional washing machine.

[0068] It can be understood that the water sealing sleeve 5 is preferably a stretchable corrugated sleeve, which is fixedly connected with the bottom wall of the outer drum 2. Alternatively, in another specific structure, it can also be a movable arrangement which is stretched out and retracted from the bottom wall of the outer drum, etc., to ensure that the water sealing sleeve and the bottom wall of the outer drum remain relatively sealed and relatively movable.

[0069] It should be noted that the position of the water sealing sleeve 5 separated from the valve part 12 in the embodiment is a position that does not interfere with and block the rotation of the inner tub 1. The space between the inner tub 1 and the outer tub 2 in the embodiment is a part of the space between the inner tub 1 and the outer tub 2 without the water sealing sleeve 5.

[0070] It can be understood that in some possible embodiments, the water passage is arranged in a groove formed in the bottom wall of the inner tub, and the water sealing sleeve moves towards the bottom wall of the inner tub until the valve part is completely pushed to a position higher than the plane on which the water passage is arranged, at which time the sealing of the hollow passage can be achieved by the contact sealing between the side wall of the groove and the water sealing sleeve, at which time the restoring member of the valve part is preferably a tension spring, and the two ends of the tension spring are fixed to the bottom wall of the groove and the valve part, respectively.

[0071] In other possible embodiments, as shown in FIG. 2, the water sealing sleeve 5 includes an inner water sealing sleeve 54 and an outer water sealing sleeve 55, and a protruding sealing part is arranged between the top ends of the inner water sealing sleeve 54 and the outer water sealing sleeve 55, which can be in contact with the bottom wall of the inner tub 1 for sealing.

[0072] Therefore, there are water sealing structures that replace the water sealing ring 52 shown in FIGS. 1 to 4, such as the top wall of the water sealing sleeve 5, the sealing part arranged at the top end of the water sealing sleeve 5, and the sealing part including a sealing bearing and a sealing ring, to better seal the hollow passage.

[0073] It can be understood that since the hollow passage is in communication with the inner tub 1 during the water inlet and drainage processes, an opening of the water level detection device 84 can be arranged on the water drainage pipeline 64 or the water inlet pipeline connected to the hollow passage, so that the water level detection device 84, such as an air pressure type water level sensor, can accurately and timely detect the water inlet level and the water drainage level of the “punchless inner tub”, and then stop the water inlet and the water drainage in time, thereby shortening the overall operation time of the washing program.

[0074] Therefore, through the hollow passage in the water sealing sleeve 5 between the inner tub 1 and the outer tub 2, the water inlet flow of the washing machine and the water drainage flow of the inner tub 1 only pass through the hollow passage of the water sealing sleeve 5 to enter and exit the inner tub 1, without entering the space between the inner tub 1 and the outer tub 2, thereby avoiding the dirt of the clothes entering the space between the inner tub 1 and the outer tub 2 along with the water flow, and better ensuring the cleanliness and sterility of the space between the inner tub 1 and the outer tub 2, and through the valve part 12, the bottom of the inner tub 1 is sealed after the water inlet and the water drainage are completed.

[0075] In the embodiment, the water sealing sleeve 5 includes an inner water sealing sleeve 54 that can be extended up and down, and a water sealing ring 52 connected to the top end of the inner water sealing sleeve 54; the inner water sealing sleeve 54 is extended upwards, the top end of the inner water sealing sleeve 54 is in contact with the valve part 12, the valve part 12 is pushed to open the water passage 11, and the water sealing ring 52 moves upwards with the top end of the inner water sealing sleeve 54 to seal the bottom wall of the inner tub 1 around the water passage 11.

[0076] By the telescopic inner water sealing sleeve 54 and the water sealing ring 52, the hollow passage is better sealed, and the water inflow of the washing machine and the water outflow of the inner tub 1 are ensured to pass through the hollow passage of the water sealing sleeve 5 to enter or exit the inner tub 1, without entering between the inner tub 1 and the outer tub 2.

[0077] In the embodiment, the water sealing sleeve 5 comprises an outer water sealing sleeve 55 sleeved on the outer side of the inner water sealing sleeve 54, the top end of the outer water sealing sleeve 55 is sealingly connected with the top end of the inner water sealing sleeve 54, and the bottom end of the outer water sealing sleeve 55 is sealingly connected with the bottom wall of the outer tub 2; the inner side of the inner water sealing sleeve 54 forms the hollow passage, a sealing cavity is formed between the outer water sealing sleeve 55 and the inner water sealing sleeve 54, and a driving mechanism 51 for driving the inner water sealing sleeve 54 to perform the up-down telescopic movement is arranged in the sealing cavity.

[0078] By arranging the driving mechanism 51 in the sealing cavity between the outer water sealing sleeve 55 and the inner water sealing sleeve 54, the water sealing sleeve 5 can automatically move up and down to seal and open the water passage 11 of the inner tub 1 in cooperation with the valve component 12, and the driving mechanism 51 is effectively prevented from being damaged due to water contact.

[0079] In the embodiment, the driving mechanism 51 comprises a driving device 511 and an annular transmission member 515 sleeved between the inner water sealing sleeve 54 and the outer water sealing sleeve 55, the output shaft 512 of the driving device 511 is in transmission connection with the annular transmission member 515, and the annular transmission member 515 is in transmission connection with the top end of the inner water sealing sleeve 54; the annular transmission member 515 moves up and down to drive the inner water sealing sleeve 54 to perform the up-down telescopic movement. By the annular transmission member 515, the driving device 511 such as a motor can drive the inner water sealing sleeve 54 to perform the telescopic movement.

[0080] In some possible embodiments, the driving device can also be an electric push rod, the side wall of the annular transmission member is fixed with the moving end of the electric push rod, and then the annular transmission member switches the small vertex of the electric push rod to a larger contact surface, the larger contact surface is fixed with the top end between the inner water sealing sleeve and the outer water sealing sleeve, and then the inner water sealing sleeve and the outer water sealing sleeve made of soft material are better pushed to perform the vertical telescopic movement without collapsing to the two sides.

[0081] In the embodiment, the driving mechanism 51 comprises a fixed ring seat 514, the bottom end of the fixed ring seat 514 is fixed to the bottom wall of the outer tub 2 and extends along the axial direction of the outer tub 2; the top end of the outer water sealing sleeve 55 and the top end of the inner water sealing sleeve 54 are sealingly connected with a bearing member 516, and the annular transmission member 515 is connected with the bearing member 516.

[0082] In a possible first embodiment, the outer wall of the output shaft is provided with a first spur gear structure, the outer wall of the ring-shaped transmission member is provided with a second spur gear structure, the first spur gear structure is preferably arranged at the top end of the output shaft, and the spur gear of the second spur gear structure extends vertically from the bottom end to the top end of the ring-shaped transmission member. Therefore, since the axial length of the second spur gear structure is greater than the axial length of the first spur gear structure and is not less than the axial movement range of the ring-shaped transmission member, when the second spur gear structure rotates up and down with the ring-shaped transmission member, the horizontally rotating first spur gear always meshes with the second spur gear to drive it. The ring-shaped transmission member is sleeved outside the fixed ring seat or inserted inside the fixed ring seat and is threadedly connected with the fixed ring seat, so that when the second spur gear is subjected to the torque of the first spur gear structure, the threads of the fixed ring seat enable the rotation of the ring-shaped transmission member to switch to rotational up-and-down movement.

[0083] In a possible second embodiment, the outer wall of the output shaft and the outer wall of the ring-shaped transmission member are provided with the first spur gear structure and the second spur gear structure as described in the first embodiment, the top end of the fixed ring seat is provided with a first guide wall, and the bottom end of the ring-shaped transmission member is provided with a second guide wall, the inclined top surface of the first guide wall contacts and supports the inclined bottom surface of the second guide wall, and the ring-shaped transmission member rotates up and down along the inclined top surface of the first guide wall.

[0084] If the direction of the torque of the second spur gear, which is subjected to the torque of the first spur gear structure, points to the inclined bottom surface, the portion of the inclined bottom surface that coincides with the inclined top surface will impact the inclined top surface. Since the inclined top surface is arranged to be inclined upward, the inclined bottom surface drives the ring-shaped transmission member to rotate upward along the inclined top surface, and since the angle between the inclined top surface and the horizontal plane is large, the ring-shaped transmission member can rise to a large height along the inclined top surface.

[0085] If the direction of the torque of the second spur gear, which is subjected to the torque of the first spur gear structure, is opposite to the above and the rotation angle is the same as the above, since the outer water jacket and the inner water jacket that support the ring-shaped transmission member are made of soft material, the gravitational force acting on the ring-shaped transmission member is greater than the supporting force, and the inclined bottom surface of the ring-shaped transmission member will inevitably rotate downward along the inclined top surface.

[0086] Further, by setting two driving devices at two ends of the annular transmission member, the axial direction of the annular transmission member is limited to not deviate from the axial direction of the fixed ring seat, and even if the annular transmission member rotates and does not fall onto the inclined top surface in time, due to the consistent rotation angle in different directions, under the limiting of the two driving devices, the annular transmission member can only vertically fall to the initial position before rotation. Further, the first guide wall and the second guide wall can be symmetrically provided in multiple groups along the axial direction of the annular transmission member and the fixed ring seat, preferably two groups, so that the fixed ring seat forms multiple point / surface supports for the annular transmission member, and the annular transmission member is more stable.

[0087] Therefore, by matching the inclined top surface of the first guide wall and the inclined bottom surface of the second guide wall, the replacement of the threaded cooperation can be achieved, and the structure is simpler and the production cost is lower.

[0088] In a possible third specific embodiment, referring to FIGS. 2 and 4, the output shaft 512 and the annular transmission member 515 constitute a double worm turbine structure, the outer peripheral wall of the annular transmission member 515 and the outer peripheral wall of the output shaft 512 are respectively provided with worm thread structures, and the two worm thread structures simultaneously mesh with an axially horizontally arranged turbine member, which is schematically shown as a horizontal line at the top end of the spring member 513 in FIGS. 2 and 4. Specifically, the bottom end of the spring member 513 is fixed to the bottom wall of the outer tub 2, and the top end is fixed to a bearing of a rotating shaft of the turbine member.

[0089] It can be understood that the two ends of the turbine member are tightly meshed in the two worm thread structures, so that the turbine member is clamped by the two worm thread structures and cannot be separated from the turbine member. The spring member 513 is preferably a tension spring, and the tension spring is in an initial state without elongation at the initial position of the turbine member. Therefore, when the turbine member slightly falls with the annular transmission member 515, the spring member 513 provides upward supporting force for the turbine member, and when the turbine member slightly rises with the annular transmission member 515, the spring member 513 provides downward tension force for the turbine member. Therefore, the spring member 513 ensures that the turbine member does not rise or fall, and can always be tightly meshed with the thread structures at the two ends, thereby ensuring good stability of the turbine member.

[0090] The annular transmission member 515 is sleeved outside the fixed ring seat 514 and is in threaded cooperation with the fixed ring seat 514, the double worm turbine structure transmits the rotation of the output shaft 512 to the annular transmission member 515, and the threads of the fixed ring seat 514 and the annular transmission member 515 enable the annular transmission member 515 to rotate and switch to rotate up and down.

[0091] In the first to third specific embodiments, the bearing member 516 is connected to the annular transmission member 515, so that the annular transmission member 515 only drives the outer water sealing jacket 55 or the inner water sealing jacket 54 fixed to the inner ring or the outer ring of the bearing member 516 to move up and down, without rotating. In addition, the first to third specific embodiments further ensure that the annular transmission member moves stably up and down through the structure of the fixed ring seat and the output shaft.

[0092] In the present embodiment, the top end of the water sealing ring 52 is arranged higher than the bearing member 516. When the inner water sealing jacket 54 is elongated upward and the water sealing ring 52 contacts the bottom wall of the inner tub 1, the bearing member 516 is spaced from the bottom wall of the inner tub 1. The water sealing ring 52 avoids the bearing member 516 from contacting the bottom wall of the inner tub 1 and being abraded.

[0093] Further, the water sealing ring is arranged to be retractable. The distance between the water sealing ring and the bottom wall of the inner tub when the valve member opens the water inlet is smaller than the height difference between the valve member in the state of opening the water inlet and the state of blocking the water inlet. Therefore, during the process of completing water inlet, the inner water sealing jacket top end descending and the valve member descending, the water sealing ring is elongated and keeps contacting the bottom wall of the inner tub. After the valve member falls to the position of blocking the water inlet and the water inlet does not inlet water to the hollow channel, the inner water sealing jacket top end continues to descend, and the water sealing ring is separated from the bottom wall of the inner tub. Therefore, the water in the inner tub does not flow out through the water sealing ring when the valve member does not block the water inlet.

[0094] In the present embodiment, the valve member 12 comprises a valve cap 121 arranged inside the inner tub 1 to block the water inlet 11, a connecting rod 122 arranged in the water inlet 11, the upper end of the connecting rod 122 being fixedly connected to the valve cap 121, and a reset member 123 sleeved on the connecting rod 122, the upper end of the reset member 123 abutting against the bottom wall of the inner tub 1 outside the water inlet 11, and the lower end of the reset member 123 being fixedly connected to the lower end of the connecting rod 122.

[0095] Therefore, the valve member 12 is formed in a top opening type through the connecting rod 122, the valve cap 121 and the reset member 123. When the water inlet is completed, the inner water sealing jacket 54 is away from the water inlet 11 and does not support the valve member 12, the valve member 12 is subjected to the water pressure in the same direction as the blocking direction and the action force of the reset member 123, and quickly blocks the water inlet 11. In addition, the upward moving direction of the valve member 12 opening the water inlet 11 is opposite to the action direction of the water pressure, so that the valve member 12 stably blocks the water inlet 11. Compared with the valve member or dynamic sealing structure which needs to overcome the water pressure to seal the inner tub, such as the metal skin bowl at the bottom of the inner tub and the water sealing rubber skin bowl at the bottom of the outer tub, the valve member 12 is more durable and will not cause poor sealing effect due to the water pressure environment. Compared with the inner tub water sealing structure such as the electric valve plug and the stop valve, the valve member 12 can realize the inlet and outlet of larger water flow.

[0096] In some possible embodiments, as shown in FIG. 4, a groove is arranged on the bottom wall of the inner tub 1, the side wall of the groove is arranged with the water passage 11, the bottom end of the connecting rod 122 is arranged with a blocking piece, and the reset member 123 is a reset spring, the top end of which is fixed to or abuts against the bottom wall of the groove, and the bottom end of which is fixed to or abuts against the blocking piece.

[0097] In some possible embodiments, the reset member 123 can also be a reset pull rod or other conventional reset device, and is arranged independently of the connecting rod 122.

[0098] Further, the groove and the water passage 11 are circumferentially arranged in two to four, preferably two, as shown in FIG. 4. As shown in FIGS. 1 to 4, the projection area of the water passage 21 vertically upwardly overlaps with the water passage 11, the water passage 11 is symmetrically arranged in at least two, and one connecting rod 122 is arranged in each water passage 11; the top end of the inner water jacket 54 is fixedly arranged with an annular support 53, which is located below the plurality of connecting rods 122 and used to push the connecting rods 122 upwardly. Through the annular support 53, the soft material inner water jacket 54 stably pushes the connecting rods 122 upwardly, and the inner water jacket 54 is realized to stably open the water passage 11.

[0099] Further, as shown in FIG. 4, the groove can be annularly arranged around the inner tub shaft 41 of the impeller 43, or a plurality of grooves are arranged, and a plurality of water passages 11 are circumferentially and annularly arranged on the inner circumferential side wall of the groove, so that the water flowing out of the water passage 11 does not directly impact the side wall of the hollow passage of the inner water jacket 54, and the clean water flowing through the water passage 11 can be more directly agitated by the impeller 43, so as to better clean the clothes.

[0100] In the embodiment, the bottom wall of the outer tub 2 is arranged with a through port, the bottom end of the inner tub shaft 41 is connected with the motor speed reducer set 42, extends upwardly through the through port, and the top end of the inner tub shaft 41 is connected with the impeller 43. The water passage 21 can be arranged to coincide with the through port, or the water passage 21 is arranged on the outer periphery of the through port of the bottom wall of the outer tub 2.

[0101] In some possible embodiments, the water passage is connected with a water level detection device. Therefore, when the hollow passage in the water jacket forms a water passage connecting the water passage and the water passage, water level detection can be performed through the water passage and the water passage.

[0102] In some possible embodiments, the water passage is connected with a water inlet pipeline.

[0103] In some possible embodiments, the water passage is connected with a water inlet pipeline.

[0104] In some other possible embodiments, as shown in Figs. 1 to 4, the water passageway 21 simultaneously communicates the water level detecting device 84, the water inlet pipeline and the water outlet pipeline 64. The water inlet to the inner tub 1 through the hollow passage and the water outlet from the inner tub 1 are realized, and the water level pressure sensor communicates with the inner tub 1 when the water is being inlet and outlet to the inner tub 1, so that the water level of the inner tub 1 can be detected.

[0105] Specifically, as shown in Figs. 1 and 3, the lower portion of the outer tub 2 is provided with an annular water sealing cavity 61 which communicates with the water passageway 21, the bottom wall of the water sealing cavity 61 extends downwardly and is connected to a water outlet connecting pipeline 63, and the detection port of the water level detecting device 84, the position where the water outlet connecting pipeline 63 and the water sealing cavity 61 are connected is provided with a water outlet valve 71, the output shaft 512 of the traction device 72 is connected to the water outlet valve 71, and the water outlet valve 71 is used to control the sealing and opening of the water outlet connecting pipeline 63.

[0106] More specifically, the bottom wall of the outer tub 2 is further provided with a water outlet 22 which is different from the water passageway 21 and communicates with the water outlet pipeline 64, in the dehydration program of the washing machine, the water in the inner tub 1 is thrown out from the dehydration port 13 and collected in the outer tub 2, and then is discharged from the water outlet 22. The water outlet pipeline 64 can be a main water outlet pipeline which communicates with the outside of the washing machine, the water outlet connecting pipeline 63 communicates with the water outlet pipeline 64, so that the water outlet of the washing machine in the dehydration program and the washing program is realized, and the water outlet in the washing program will not enter between the inner tub 1 and the outer tub 2 and contact the bottom wall of the inner tub 1 and the outer tub 2.

[0107] More specifically, the side wall of the part of the bottom wall of the water sealing cavity which extends downwardly is provided with a water inlet port which is connected to the water inlet pipeline, so that the water can be inlet to the inner tub through the water sealing cavity, the water passageway and the hollow passage when the water outlet connecting pipeline is sealed.

[0108] More specifically, as shown in Figs. 1 and 3, the water level detecting device 84 of the present embodiment is a gas pressure type water level sensor, which is arranged at a position higher than the highest water level in the inner tub 1, and sequentially communicates with the detection port through the pressure guide pipe 83, the air chamber 81 and the connecting pipeline 62, the pressure guide pipe 83 is specifically connected to the air chamber nozzle 82 at the upper portion of the air chamber 81, in the process of water inlet and outlet, the water level in the air chamber 81 and the pressure guide pipe 83 changes with the water level in the inner tub 1, and then the water level detecting device 84 realizes the accurate detection of the water level in the inner tub 1 by detecting the water level in the air chamber 81 or the pressure guide pipe 83.

[0109] It is easy to understand that, since the water outlet in the dehydration process is thrown out from the dehydration port 13 at the lower portion of the balance ring 3 at the tub opening of the inner tub 1, the dirt amount of the water outlet in the dehydration process is far less than that of the water outlet in the washing process, and the water outlet 22 is arranged at a position close to the lower portion of the balance ring 3, so that the water outlet in the dehydration process will not cause serious pollution and bacteria breeding between the tubs.

[0110] As shown in Fig. 2, the specific process of opening the water passage 11 in the embodiment is as follows: the output shaft 512 of the driving device 511 rotates, the output shaft 512 drives the annular transmission member 515 to rotate through the rotary transmission structure, the annular transmission member 515 moves upward along the threads of the fixed ring seat 514, the annular transmission member 515 drives the inner ring or outer ring of the bearing member 516 to move upward, the inner sealing water jacket 54 and the outer sealing water jacket 55 are elongated, the inner sealing water jacket 54 drives the annular support member 53 to move upward, the annular support member 53 drives the sealing water ring 52 to contact the bottom wall of the inner drum 1 and the valve cap 121 of the valve member 12 to move upward to open the water passage 11. At this time, since the top end of the sealing water ring 52 is higher than the bearing member 516, the bearing member 516 is not in contact with the bottom wall of the inner drum 1, thereby avoiding the abrasion of the bearing member 516.

[0111] As shown in Fig. 4, the specific process of plugging the water passage 11 in the embodiment is the opposite process of opening the water passage 11. At this time, the annular support member 53 and the valve member 12 are separated, and the valve cap 121 of the valve member 12 is plugged under the action of the water flow and the action of the reset member 123.

[0112] In a specific embodiment, the controller of the washing machine is in communication connection with the driving device and the water level detection device, and then the water level detection is performed after the water passage 11 is opened by controlling the rotating direction and rotating time of the output shaft of the driving device.

[0113] In summary, in the embodiment, the cooperation of the sealing water jacket 5 and the valve member 12 makes the water flow of the washing machine and the drainage water flow of the inner drum 1 enter and exit the inner drum 1 only through the hollow passage in the sealing water jacket 5, without entering the space between the inner drum 1 and the outer drum 2, thereby ensuring the cleanliness and sterility of the space between the drums. The driving mechanism 51 is arranged in the sealing cavity between the outer sealing water jacket 55 and the inner sealing water jacket 54, which realizes the automatic up-and-down telescopic movement of the sealing water jacket 5 assembly, cooperates with the valve member 12 to plug and open the water passage 11 of the inner drum 1, and effectively prevents the driving mechanism 51 from being damaged due to water contact. The valve member 12 formed by the connecting rod 122, the valve cap 121 and the reset member 123 is a top-opening type, which makes the direction of the downward movement of the valve member 12 consistent with the direction of the water pressure, so that the water pressure assists the valve member 12 to stably plug the water passage 11, thereby avoiding the situation that the sealing effect of the valve member 12 is deteriorated due to the water pressure environment. The sealing water jacket 5 has simple structure and remarkable effect, and is suitable for popularization and use.

[0114] Embodiment Two

[0115] The embodiment is based on the embodiment one, and provides a washing machine. The washing machine in the embodiment is different from the embodiment one in that the output shaft of the driving device and the annular transmission member are provided with matched transmission structures, the transmission structures switch the rotation of the output shaft into the up-down movement of the annular transmission member, and the annular transmission member is fixed to the top end of the inner water jacket. The driving mechanism does not have a fixed ring seat, a spring member and a bearing member.

[0116] Specifically, the transmission structure is a lead screw structure, and the top end of the annular transmission member is preferably fixed to the top wall between the inner water jacket and the outer water jacket. The output shaft of the driving device is provided with a nut of the lead screw structure, and the annular transmission member is fixed to the plurality of nuts of the plurality of driving devices. More specifically, the driving device is preferably an integrated lead screw motor integrated with the nut, and two are arranged symmetrically along the inner tub shaft. More specifically, the lead screw structure is a ball screw structure or a trapezoidal screw structure.

[0117] Therefore, when the output shaft of the driving device rotates, the nut switches the rotation of the output shaft into the up-down movement, and the two nuts at the two ends of the annular transmission member can drive the annular transmission member to move up and down stably.

[0118] Embodiment three

[0119] The embodiment is based on the embodiment two, and provides a washing machine. The washing machine in the embodiment is different from the embodiment two in that the water jacket is provided with only one driving device, the transmission structure matched with the annular transmission member of the driving device is a lead screw structure, and the driving mechanism has a fixed ring seat.

[0120] Specifically, the annular transmission member is an annular member arranged between the inner water jacket and the outer water jacket, the annular transmission member is arranged on the outer wall of the fixed ring seat and forms a conventional telescopic ring structure with the fixed ring seat. The output shaft of the driving device rotates, the nut switches the rotation of the output shaft into the up-down movement, and the nut drives the annular transmission member to move up and down relative to the fixed ring seat.

[0121] Therefore, the fixed ring seat can provide support for the annular transmission member, reduce the pressure of the annular transmission member and the water jacket borne by the output shaft, and further ensure that the annular transmission member moves up and down stably.

[0122] Embodiment four

[0123] As shown in FIGS. 1-4, the present embodiment provides a control method of a washing machine, which is applied to the washing machines of embodiments one to three, comprising: the washing machine controls the top end of the water sealing sleeve 5 to move upward until it contacts the valve component 12, the valve component 12 opens the water passage 11, the water sealing sleeve 5 is sealed with the bottom wall of the inner drum 1 outside the water passage 11, and the hollow passage in the water sealing sleeve 5 forms a water passage connecting the water passage 11 and the water passage 21; the washing machine controls the water sealing sleeve 5 to move downward until the valve component 12 blocks the water passage 11, and the water sealing sleeve 5 is separated from the bottom wall of the inner drum 1 outside the water passage 11.

[0124] In some possible embodiments, when the washing machine is powered on, the user sets a washing program for the washing machine, and starts the washing program, the washing machine controls the output shaft 512 of the driving device 511 to rotate in a first rotating direction for a first set time length, so that the water sealing ring 52 and the bottom wall of the inner drum 1 are in contact, the valve component 12 opens the water passage 11, the washing machine controls the water inlet pipeline to supply water to the inner drum 1 through the hollow passage, and the water level detection device 84 starts to detect the water level in the inner drum 1. If the water level reaches the set water level of the washing program, the washing machine controls the water inlet pipeline to stop supplying water, controls the output shaft 512 of the driving device 511 to rotate in a second rotating direction for a second set time length, so that the annular support 53 and the valve component 12 are separated, and then controls the inner drum 1 and / or the impeller 43 to rotate according to the washing program. When the washing program is running to the water draining stage, the washing machine controls the driving device 511 to stop running, the inner drum 1 and the impeller 43 do not rotate, controls the traction device 72 to open the water draining valve 71 of the water draining connecting pipeline 63, and controls the output shaft 512 of the driving device 511 to rotate in the first rotating direction for the first set time length, so as to start the water draining of the inner drum 1.

[0125] Specifically, when the washing machine starts the water draining program, the annular support 53 is located at a position separated from the valve component 12, the washing machine controls the clutch to switch to the water draining state, the motor drives the inner drum 1 to rotate through the speed reducer, and the water in the clothes is upward along the inner wall of the inner drum 1 under the high-speed rotation of the inner drum 1 and is drained through the water draining port 13 at the upper end of the inner drum 1.

[0126] In summary, the present embodiment realizes that the water flow does not enter the space between the inner drum 1 and the outer drum 2 during the water supplying and water draining processes of the washing machine, thereby avoiding the dirty clothes entering the space between the inner drum 1 and the outer drum 2 with the water flow, and better ensuring the cleaning and sterility of the space between the inner drum 1 and the outer drum 2.

[0127] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in any form. Although the present application has been disclosed with the preferred embodiments as above, it is not intended to limit the present application, and any person skilled in the art can make some changes or modifications to the above-mentioned technical content as equivalent embodiments with equivalent changes, without departing from the technical solution of the present application. Any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application, without departing from the technical solution of the present application, still belongs to the scope of the present application.

Claims

1. A laundry machine characterized by, It comprises: an outer tub (2) having a water passage (21) on its bottom wall; an inner tub (1) arranged in the outer tub (2) and capable of holding water independently, the inner tub (1) having a water passage (11) on its bottom wall and a valve member (12) for opening and closing the water passage (11); a water sealing sleeve (5) arranged between the bottom wall of the inner tub (1) and the bottom wall of the outer tub (2) and sleeved on the outer side of the inner tub shaft (41), the water sealing sleeve (5) having a hollow passage extending through it from top to bottom inside; the bottom end of the water sealing sleeve (5) is sealingly connected to the bottom wall of the outer tub (2), the water passage (21) is in communication with the hollow passage, and the top end of the water sealing sleeve (5) is capable of moving up and down to abut against or separate from the valve member (12) to open and close the water passage (11); when the top end of the water sealing sleeve (5) moves up to abut against the valve member (12), the bottom wall of the inner tub (1) around the water passage (11) is sealed, and the water passage (11) and the water passage (21) are communicated through the hollow passage.

2. The washing machine according to claim 1, characterized in that: the water sealing sleeve (5) comprises an inner water sealing sleeve (54) capable of extending up and down, and a water sealing ring (52) connected to the top end of the inner water sealing sleeve (54); when the inner water sealing sleeve (54) extends up, the top end thereof abuts against the valve member (12) to push the valve member (12) to open the water passage (11), and the water sealing ring (52) moves up with the top end of the inner water sealing sleeve (54) to seal the bottom wall of the inner tub (1) around the water passage (11).

3. The washing machine according to claim 2, characterized in that: the water sealing sleeve (5) comprises an outer water sealing sleeve (55) sleeved on the outer side of the inner water sealing sleeve (54), the top end of the outer water sealing sleeve (55) is sealingly connected to the top end of the inner water sealing sleeve (54), and the bottom end of the outer water sealing sleeve (55) is sealingly connected to the bottom wall of the outer tub (2); the inner side of the inner water sealing sleeve (54) forms the hollow passage, a sealing cavity is formed between the outer water sealing sleeve (55) and the inner water sealing sleeve (54), and a driving mechanism (51) for driving the inner water sealing sleeve (54) to extend up and down is arranged in the sealing cavity.

4. The washing machine according to claim 3, characterized in that: the driving mechanism (51) comprises a driving device (511) and an annular transmission member (515) sleeved between the inner water sealing sleeve (54) and the outer water sealing sleeve (55), the output shaft (512) of the driving device (511) is in transmission connection with the annular transmission member (515), and the top end of the inner water sealing sleeve (54) is in transmission connection with the annular transmission member (515); the annular transmission member (515) moves up and down to drive the inner water sealing sleeve (54) to extend up and down.

5. The washing machine according to claim 4, characterized in that: the output shaft (512) of the driving device (511) and the annular transmission member (515) are provided with matched transmission structures, and the transmission structures switch the rotation of the output shaft (512) into the up-and-down movement of the annular transmission member (515). The ring-shaped transmission member (515) is fixed to the top end of the inner water jacket (54).

6. The washing machine according to claim 4 or 5, characterized in that: The driving mechanism (51) comprises a fixed ring seat (514), the bottom end of which is fixed to the bottom wall of the outer tub (2) and extends along the axial direction of the outer tub (2); The ring-shaped transmission member (515) is sleeved outside the fixed ring seat (514) or is inserted into the inside of the fixed ring seat (514) and is in threaded cooperation with the fixed ring seat (514); or the top end of the fixed ring seat (514) is provided with a first guide wall, the bottom end of the ring-shaped transmission member (515) is provided with a second guide wall, and the first guide wall is in contact with the second guide wall through the inclined top surface of the first guide wall and the inclined bottom surface of the second guide wall; The top end of the outer water jacket (55) and the top end of the inner water jacket (54) are sealingly connected to a bearing member (516), and the ring-shaped transmission member (515) is connected to the bearing member (516); The driving device (511) drives the rotation of the ring-shaped transmission member (515), and the ring-shaped transmission member (515) moves up and down in rotation along the threads of the fixed ring seat (514) or along the inclined top surface of the first guide wall.

7. The washing machine according to claim 6, characterized in that: The top end of the water sealing ring (52) is higher than the bearing member (516); When the inner water jacket (54) is in elongated upward movement and the water sealing ring (52) is in contact with the bottom wall of the inner tub (1), the bearing member (516) is spaced apart from the bottom wall of the inner tub (1).

8. The washing machine according to any one of claims 1 to 7, characterized in that: The valve member (12) comprises: A valve cap (121) arranged inside the inner tub (1) to block the water passage (11); A connecting rod (122) penetrating the water passage (11), the upper end of the connecting rod (122) being fixedly connected to the valve cap (121); A reset member (123) sleeved on the connecting rod (122), the upper end of the reset member (123) being in abutment with the bottom wall of the inner tub outside the periphery of the water passage (11), and the lower end being fixedly connected to the lower end of the connecting rod (122).

9. The washing machine according to any one of claims 1 to 8, characterized in that: The washing machine comprises a water level detection device (84) in communication with the water passage (21), and / or a water inlet pipeline in communication with the water passage (21), and / or a drain pipeline (64) in communication with the water passage (21).

10. A control method of a washing machine as claimed in any one of claims 1 to 9, characterized in that, The washing machine controls the upward movement of the top end of the water jacket (5) until the top end is in abutment with the valve member (12), the valve member (12) is opened, the top end of the water jacket (5) is sealed to the bottom wall of the inner tub (1) outside the periphery of the water passage (11), and the water passage (11) and the water passage (21) are connected through the hollow channel in the water jacket (5). ​ The washing machine controls the top end of the water jacket (5) to move downward until it is separated from the valve component (12), the valve component (12) blocks the water passage (11), and the top end of the water jacket (5) is separated from the inner barrel (1) bottom wall outside the water passage (11) periphery.

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