Washing machine with automatic balancing device and automatic balancing control method

Abstract

The invention provides a washing machine with an automatic balancing device and an automatic balancing control method.The automatic balancing device is arranged at the bottom of a barrel assembly and comprises a balancing disc and a driving unit, the balancing disc can be independently and rotatably connected with a driving shaft, and the driving shaft is in transmission connection with the balancing disc and used for driving the balancing disc to rotate; the balance disc comprises an annular part, a shaft sleeve and supporting parts, the two ends of the supporting parts are connected with the annular rib and the shaft sleeve respectively, the multiple supporting parts are arranged at equal intervals in the axial direction of the shaft sleeve, and the balance disc is connected with the driving shaft through the shaft sleeve. The inertia shaft generated by rotation of the balance disc is used for restraining eccentricity generated in the running process of the washing program and the dewatering program, and then automatic balance of the washing machine is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of washing machines, and in particular relates to a washing machine with an automatic balancing device and an automatic balancing control method. Background Art

[0002] With the improvement of people's living standards, the penetration rate of washing machines is getting higher and higher, and they are widely praised by users because they can complete the routine washing of clothes on behalf of users.

[0003] Washing machines usually have a spin-drying function, but during the spin-drying process, noise is easily generated due to vibration, affecting the user experience, and frequent collisions can easily cause damage to the washing machine. For this reason, existing washing machines correct the eccentricity by setting correction structures such as balance rings to avoid the occurrence of eccentricity.

[0004] For example, the Chinese invention patent with application number CN202110312709.5 discloses a balancing ring for a washing machine, a shell and at least two partitions arranged circumferentially inside the shell, the partitions divide the inside of the balancing ring into at least two chambers in the circumferential direction, and a first through hole is provided on the partition to connect two adjacent chambers of the partition, the first through hole is composed of a gap between at least one side of the partition close to the inner circumferential wall of the balancing ring and the inner circumferential wall of the balancing ring, the ratio of the distance between the lower end face of the balancing ring at the lower end of the first through hole and the distance between the upper and lower end faces of the balancing ring is 1:(2-4), and the distance between the upper end of the first through hole and the upper end face of the balancing ring and the distance between the upper and lower end faces of the balancing ring is not greater than 1:7; by arranging the first through hole in a position close to the inner circumferential wall of the balancing ring, the deviation correction ability of the balancing ring is improved when the barrel rotates at a high speed; however, salt water is used as the balancing medium in the above-mentioned balancing ring. When the temperature is low in winter, there is a situation where the salt water freezes and cannot flow, resulting in failure of the balancing ring and may increase the degree of eccentricity.

[0005] In order to avoid this problem, a Chinese invention patent with application number CN201910661967.7 discloses a washing machine and a control method thereof, wherein a magnetic sliding assembly, an electromagnetic adsorption assembly, a locking assembly and a magnetic detection unit are arranged on the washing machine, the magnetic sliding assembly is slidably arranged in a balance ring, the magnetic detection element can detect the position of the magnetic sliding assembly in the balance ring, the locking assembly can lock the magnetic sliding assembly, and the electromagnetic adsorption assembly can magnetically adsorb the magnetic sliding assembly when power is turned on to make the magnetic sliding assembly detach from the locking assembly; the eccentricity can be accurately corrected by this scheme, although it will not cause problems such as leakage of the balancing medium or solidification failure, and improve the reliability of the balance ring, but the correction performance of the balance ring is limited, and when the eccentricity is large, sufficient eccentricity correction cannot be achieved, and the structure is complex, which increases the production cost.

[0006] In view of this, the present invention is proposed. Summary of the invention

[0007] The purpose of the present invention is to provide a washing machine with an automatic balancing device to address the problems in the above-mentioned prior art. By adding a rotatable balancing plate coaxially arranged with the barrel assembly, the eccentricity of the barrel assembly is suppressed by utilizing the inertia axis generated during the rotation of the balancing plate, thereby realizing automatic deviation correction of the washing machine.

[0008] Another object of the present invention is to provide an automatic balancing control method for a washing machine, by driving the balancing plate to rotate stably before the washing program or the dehydration program starts, and utilizing the inertia axis generated by the stable rotation of the balancing plate to fully suppress the eccentricity generated during the execution of the washing program or the dehydration program, thereby ensuring the smooth progress of the washing program and the dehydration program.

[0009] In order to achieve the above object, the present invention provides a washing machine with an automatic balancing device, the washing machine comprises a tub assembly, a drive shaft and a motor, the bottom of the tub assembly is provided with an automatic balancing device, the automatic balancing device comprises:

[0010] A balance plate, located at the bottom of the barrel assembly, is connected to the drive shaft and can rotate independently;

[0011] The driving unit is connected to the balancing disc in driving mode and is used for driving the balancing disc to rotate.

[0012] It should be noted here that when the barrel assembly includes an inner barrel and an outer barrel, the automatic balancing device is arranged at the bottom of the outer barrel; when the barrel assembly is a washing and dehydrating barrel with integrated washing and dehydration, the automatic balancing device is arranged at the bottom of the washing and dehydrating barrel.

[0013] In the above scheme, the inclination angle of the outer drum is detected in real time during the drainage process, and when eccentricity is determined according to the inclination angle, the corresponding correction program is corrected according to the current water level height. This ensures that the clothes are evenly distributed after drainage, improves the success rate of dehydration start-up, and does not cause repeated dehydration start-up due to uneven distribution of clothes, shortens the washing cycle, and improves the user experience.

[0014] Furthermore, the balancing plate includes:

[0015] annular part;

[0016] A shaft sleeve having a shaft hole in the center for the driving shaft to pass through;

[0017] A support portion, one end of which is connected to the annular portion and the other end of which is connected to the sleeve;

[0018] The plurality of support portions are arranged at equal intervals along the circumferential direction of the drive shaft.

[0019] In the above scheme, the balancing disc is sleeved on the driving shaft through the shaft sleeve to realize the independent rotation of the balancing disc, so that the rotation of the balancing disc does not affect the rotation of the driving shaft, thereby ensuring the automatic balancing effect of the automatic balancing device; the annular portion is connected to the shaft sleeve through the supporting portion, on the one hand, to ensure that the balancing disc has a sufficiently large size, thereby being able to provide a large deviation correction force; on the other hand, the overall weight of the balancing disc is reduced, thereby reducing the production cost.

[0020] Preferably, three support parts are provided along the axial direction of the driving shaft.

[0021] Furthermore, the shaft sleeve is a bearing, the inner ring of the bearing is sleeved on the outer side of the driving shaft and remains relatively fixed with the driving shaft, and the support portion is connected to the outer ring of the bearing.

[0022] In the above scheme, the sleeve is set as a bearing, and the bearing is used to ensure that the rotation of the balancing plate and the rotation of the driving shaft will not affect each other. While realizing the automatic balancing function, it will not affect the normal washing of the washing machine, and the noise during the automatic balancing process is reduced, thereby improving the user experience.

[0023] Alternatively, as an alternative to the above solution, the inner surface of the shaft hole on the shaft sleeve is smooth, and is sleeved on the outer side of the drive shaft and slidably connected with the drive shaft;

[0024] A limiting protrusion for limiting the position of the shaft sleeve is provided on the driving shaft.

[0025] The above scheme reduces the friction between the drive shaft and the balancing disc by processing the inner surface of the sleeve, thereby reducing the mutual influence between the balancing disc and the drive shaft. At the same time, the position of the balancing disc is fixed by using the limiting protrusion to avoid relative displacement between the balancing disc and the drive shaft, thereby ensuring the stability of automatic balancing.

[0026] Preferably, the driving shaft has two limiting protrusions spaced apart along the length direction, and the surface of the driving shaft between the two limiting protrusions is smooth.

[0027] The above scheme further reduces the mutual influence between the balance and the drive shaft, and can better fix the balance disc. In order to facilitate disassembly and assembly, the two limit protrusions can also be set to be detachably connected to the drive shaft, thereby making it easier to disassemble, assemble and maintain the balance disc.

[0028] Furthermore, the automatic balancing device comprises at least two balancing discs, which are independently rotatable and connected to the drive shaft and are spaced apart along the length direction of the drive shaft. The above scheme can better achieve automatic balancing by providing multiple balancing discs.

[0029] Furthermore, the diameter of the balancing disc is greater than or equal to the diameter of the barrel assembly, thereby ensuring that the deviation-correcting force provided by the balancing disc is sufficient to maintain the balance of the barrel assembly.

[0030] When the barrel assembly includes an inner barrel and an outer barrel, the diameter of the balancing plate is greater than or equal to the diameter of the outer barrel. When the barrel assembly is a washing and dehydration barrel integrated with washing and dehydration, the diameter of the balancing plate is greater than or equal to the diameter of the washing and dehydration tube.

[0031] Furthermore, the automatic balancing device also includes:

[0032] The outer shell is fixed to the bottom of the barrel assembly and is detachably connected to the barrel assembly, and is hollow inside to form a receiving space for receiving the balancing disc;

[0033] The outer shell is provided with an avoidance hole for the driving shaft to pass through, and the diameter of the avoidance hole is greater than the diameter of the driving shaft.

[0034] In the above scheme, the balancing disc is contained in the outer shell, which ensures that the balancing disc is not affected by the external environment during rotation, and further improves the stability of automatic balancing; the outer shell is fixed to the bottom of the barrel assembly, which is more stable and not easy to fall off, and is also conducive to the stable rotation of the balancing disc.

[0035] A second aspect of the present invention provides an automatic balancing control method for a washing machine having the automatic balancing device described above, wherein a washing program or a dehydration program is started after the balancing plate is driven by a driving unit to maintain stable rotation.

[0036] In the above scheme, the balancing plate rotates first to form a stable inertia axis before starting the washing or dehydration process, which can better maintain the balance of the barrel assembly in the washing process or the dehydration process.

[0037] Furthermore, before starting the washing program, the driving unit drives the balancing plate to rotate smoothly at a preset first speed, and the first speed is greater than or equal to the washing speed of the washing program.

[0038] Furthermore, before starting the dehydration program, the driving unit drives the balancing disc to rotate smoothly at a preset second speed, and the second speed is greater than or equal to the maximum dehydration speed of the dehydration program.

[0039] The beneficial effects of the present invention are:

[0040] 1. The balancing plate coaxially arranged with the washing machine maintains the balance and stability of the washing machine barrel assembly through the inertial axis formed during the rotation of the balancing plate, and automatically suppresses and corrects the eccentricity when it occurs. There is no need to set a balancing ring on the barrel assembly and the balancing effect is stable, avoiding the problems of balancing ring leakage and balancing medium agglomeration due to temperature changes leading to balancing failure, thereby improving the user experience.

[0041] 2. The balancing disc includes a shaft sleeve, a supporting portion and an annular portion. In this way, a hollow area is formed on the balancing disc, which reduces the overall weight of the balancing disc and reduces the manufacturing cost of the balancing disc.

[0042] 3. The shaft sleeve is set as a bearing, which can realize the independent rotation of the balancing disc and the drive shaft, avoiding the influence of the rotation of the balancing disc on the normal operation of the washing machine. At the same time, it can more conveniently realize the fixing of the balancing disc on the drive shaft; or the inner surface of the shaft hole on the shaft sleeve is set to be smooth, which can reduce the friction between the balancing disc and the drive shaft, thereby reducing the mutual influence between the two, which is conducive to the disassembly and maintenance of the balancing disc.

[0043] 4. The present invention has a simple structure and does not need to be coordinated with a balance ring. It can independently suppress deviation correction and has a strong adjustable deviation correction capability, and can adapt to different degrees of eccentricity. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 The figure is a schematic structural diagram of a washing machine with an automatic balancing device according to the present invention.

[0045] Figure 2 The figure is a schematic structural diagram of a balancing plate in a washing machine with an automatic balancing device according to the present invention.

[0046] In the figure: 1. barrel assembly; 2. motor; 3. drive shaft; 4. balance plate; 41. annular portion; 42. bushing; 43. support portion; 5. outer shell. DETAILED DESCRIPTION

[0047] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that the following embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0048] In the description of the present invention, unless otherwise clearly specified and limited, the terms "setting" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0049] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0050] The present invention provides a washing machine with an automatic balancing device, such as Figure 1 and Figure 2As shown, the washing machine includes a barrel assembly 1, a drive shaft 3 and a motor 2. An automatic balancing device is provided at the bottom of the barrel assembly 1. The automatic balancing device includes:

[0051] The balancing plate 4 is disposed at the bottom of the barrel assembly 1 and is independently rotatably connected to the driving shaft 3;

[0052] The driving unit is drivingly connected to the balancing disc 4 and is used for driving the balancing disc 4 to rotate.

[0053] It should be noted here that when the barrel assembly 1 includes an inner barrel and an outer barrel, the automatic balancing device is arranged at the bottom of the outer barrel. When the barrel assembly 1 is a washing and dehydrating barrel with integrated washing and dehydration, the automatic balancing device is arranged at the bottom of the washing and dehydrating barrel.

[0054] In the above scheme, the balance plate 4 can rotate independently with respect to the barrel assembly 1, and the eccentricity of the barrel assembly 1 is suppressed and corrected by the inertia axis formed by the rotation of the balance plate 4, thereby realizing automatic balancing of the barrel assembly 1. There is no need to set other balancing devices such as balance rings, which simplifies the structure of the washing machine. Compared with balance rings, the reliability is higher.

[0055] The present invention is further described in detail below with reference to specific embodiments.

[0056] Embodiment 1

[0057] As an embodiment of the present invention, this embodiment provides a washing machine with an automatic balancing device, such as Figure 1 As shown, the center of the balance ring has an axial hole, which can be independently rotatable and sleeved on the outer side of the driving shaft 3.

[0058] In this embodiment, if Figure 2 As shown, the balancing disc 4 includes a sleeve 42, an annular portion 41 and a support portion 43. Both ends of the support portion 43 are respectively connected to the annular portion 41 and the sleeve 42. A plurality of support portions 43 are arranged at equal intervals along the circumference of the sleeve 42, so that the sleeve 42 and the annular portion 41 are coaxially arranged. During the rotation of the balancing disc 4, a stable inertial axis can be formed, thereby improving the automatic balancing ability and stability.

[0059] Furthermore, in order to realize independent rotation of the balancing disk 4 and the drive shaft 3, the sleeve 42 can be set as a bearing, and the inner ring of the bearing is sleeved on the drive shaft 3 and fixedly connected to the drive shaft 3, thereby ensuring that the position of the balancing disk 4 on the drive shaft 3 is fixed, avoiding displacement and falling off of the balancing disk 4 along the length direction of the drive shaft 3, and improving the operating stability of the automatic balancing device; the outer ring of the bearing is connected to the annular portion 41 through the support portion 43, so that the rotation of the balancing disk 4 will not affect the drive shaft 3, thereby realizing independent rotation; and the bearing is used to reduce the noise generated during the rotation of the balancing disk 4, thereby improving the user experience.

[0060] Furthermore, in order to better fix the balancing disc 4, an elastic unit for increasing friction is provided between the inner ring of the bearing and the drive shaft 3. The elastic unit may be a rubber ring filled between the inner ring of the bearing and the drive shaft 3, or may be a plurality of rubber sheets respectively provided in different directions around the drive shaft 3; or an annular fixing groove is provided on the drive shaft 3, and the inner ring of the bearing is at least partially embedded in the fixing groove, thereby better fixing the balancing disc 4 and effectively improving the working stability of the automatic balancing device.

[0061] Furthermore, in order to further improve the stability of the inertia axis generated by the balancing disk 4, the automatic balancing device includes at least two balancing disks 4, and the two balancing disks 4 are independently rotatable and connected to the drive shaft 3. By providing multiple balancing disks 4, the stability of the inertia axis can be further improved, thereby improving the balancing ability of the automatic balancing device.

[0062] Furthermore, the diameter of the balancing plate 4 is greater than or equal to the diameter of the tub assembly 1 , which further improves the stability of the inertia axis generated by the rotation of the balancing plate 4 and can better achieve automatic balancing of the washing machine.

[0063] In order to realize automatic rotation of the balancing disk 4, the driving unit can be a driving wheel that drives the balancing disk 4 to rotate by friction, or it can be an independently arranged driving motor that drives the balancing disk 4 to rotate; when the driving unit is a driving wheel, the driving wheel can abut against the balancing disk 4 from the end or one side of the balancing disk 4, or a plurality of driving wheels can be arranged to abut against the balancing disk 4 from both sides of the balancing disk 4 or both sides and the end respectively, so as to provide a more stable driving force; when the driving unit is a driving motor, the driving shaft 3 can be correspondingly arranged as a plurality of layers of driving shafts 3 nested in sequence, one of which controls the rotation of the portion of the driving shaft 3 in contact with the bushing 42, thereby realizing independent control of the balancing disk 4.

[0064] Embodiment 2

[0065] As another embodiment of the present invention, this embodiment differs from the first embodiment in that the structure of the balancing disk 4 is different.

[0066] In this embodiment, the center of the bushing 42 has an axial hole for the drive shaft 3 to pass through, and the inner surface of the axial hole is smooth, thereby reducing the friction between the balancing disc 4 and the drive shaft 3 during rotation, and reducing the impact between the balancing disc 4 and the drive shaft 3.

[0067] In order to further reduce the influence and realize the independent rotation of the balancing disc 4 and the drive shaft 3, the outer peripheral wall of the drive shaft 3 is at least partially smooth to form an annular smooth surface matching the sleeve 42; when the balancing disc 4 is installed in place, the sleeve 42 is in a smooth position with the surface of the drive shaft 3, further reducing the mutual influence between the drive shaft 3 and the balancing ring.

[0068] Since the two surfaces in contact with each other are smooth, the balancing disc 4 inevitably tends to fall off. For this reason, a limiting protrusion is provided on the drive shaft 3 to limit the position of the sleeve 42. One or more limiting protrusions can be provided according to actual use needs, or can be provided on one side or both sides of the sleeve 42.

[0069] As a specific implementation of this embodiment, at least one limiting protrusion is arranged on the side of the balancing disc 4 away from the barrel assembly 1, which effectively prevents the balancing disc 4 from falling off or being displaced from the drive shaft 3 during rotation, thereby improving the working stability of the automatic balancing device; in order to further avoid mutual influence between the balancing disc 4 and the drive shaft 3, a plurality of limiting protrusions are arranged at equal intervals along the axial direction of the drive shaft 3, and the plurality of limiting protrusions respectively support the side of the sleeve 42 away from the barrel assembly 1 from different directions, thereby preventing the sleeve 42 from tilting and causing the friction between the sleeve 42 and the drive shaft 3 to increase, thereby further improving the stability of the operation of the automatic balancing device; in order to fully avoid the occurrence of tilting, the side of the sleeve 42 away from the barrel assembly 1 has at least three limiting protrusions arranged at equal intervals.

[0070] Furthermore, a limiting protrusion may be provided on the side of the shaft sleeve 42 close to the barrel assembly 1. By limiting the shaft sleeve 42 from both sides of the limiting protrusion, the displacement of the balance disc 4 along the length direction of the drive shaft 3 can be more effectively avoided. Usually, one limiting protrusion is provided on the side of the shaft sleeve 42 close to the barrel assembly 1. In order to avoid unexpected situations, at least two limiting protrusions are preferably provided, and at least three limiting protrusions are more preferably provided. The three limiting protrusions are equally spaced along the axial direction of the drive shaft 3.

[0071] Alternatively, the limiting protrusion may also be provided in a ring shape, so as to better limit the position of the balancing disc 4 .

[0072] Furthermore, in order to facilitate the disassembly of the balancing disk 4 while limiting the balancing disk 4, the limiting protrusion arranged on the drive shaft 3 is detachably connected to the drive shaft 3. In the present embodiment, the limiting protrusion may be a limiting column detachably connected to the drive shaft 3. The detachable method may be conventional methods in the field such as snap-on connection and screw connection, which will not be elaborated here. The limiting protrusion may also be a limiting hoop arranged in an annular manner, and the limiting hoop has an adjustment unit for adjusting the tightness, and the limiting protrusion is formed on the drive shaft 3 by tightening the limiting hoop on the adjustment unit. Through the above scheme, the user can more conveniently remove the balancing disk 4 for replacement, repair or maintenance after the automatic balancing device is damaged or used for a long time, thereby simplifying the disassembly and assembly process.

[0073] Embodiment 3

[0074] As another embodiment of the present invention, this embodiment further makes the following improvements on the basis of the first embodiment.

[0075] In this embodiment, the automatic balancing device further comprises a housing 5, which is hollow to form a receiving space for the balancing disk 4, so that the rotation of the balancing disk 4 will not be affected by the external environment and other components in the washing machine, thereby improving the stability of the automatic balancing device.

[0076] Furthermore, in order to avoid friction or collision between the outer shell 5 and the balancing plate 4, the outer shell 5 is fixed at the bottom of the barrel assembly 1. Since the relative positions of the balancing plate 4 and the barrel assembly 1 remain unchanged, fixing the outer shell 5 at the bottom of the barrel assembly 1 can achieve the fixation of the relative positions of the outer shell 5 and the balancing plate 4, while simplifying the installation method and improving the user experience and disassembly convenience.

[0077] Furthermore, since the outer shell 5 wraps the balancing disc 4, the driving shaft 3 inevitably passes through the outer shell 5. In order to avoid a collision between the outer shell 5 and the driving shaft 3, avoidance holes for the driving shaft 3 to pass through are arranged on opposite sides of the outer shell 5. The diameter of the avoidance holes is larger than the diameter of the driving shaft 3. Even if there is a small relative displacement between the driving shaft 3 and the outer shell 5, the two will not collide with each other, thereby increasing the service life of the outer shell 5. At the same time, abnormal noises during use are avoided, thereby improving the user experience.

[0078] This embodiment can also be combined with the solution described in the second embodiment to obtain a new solution, and the obtained solution still falls within the protection scope of the present invention.

[0079] The present invention also provides an automatic balancing control method for a washing machine with an automatic balancing device as described in the above embodiment, which is specifically as follows.

[0080] Embodiment 4

[0081] As another embodiment of the present invention, this embodiment provides an automatic balancing control method for a washing machine having an automatic balancing device as described in the first embodiment.

[0082] In this embodiment, after the balancing disc 4 is driven by the driving unit to keep rotating smoothly, the washing process or the dehydration process is started.

[0083] After the balancing disc 4 rotates stably, a stable inertia axis is formed. At this time, the washing program or the dehydration program starts. Even if the barrel assembly 1 is eccentric, the eccentricity can be suppressed under the action of the inertia axis, thereby achieving automatic correction.

[0084] Specifically, when the washing program is automatically corrected, the driving unit drives the balancing plate 4 to rotate smoothly at a preset first speed, and then the washing program starts. At this time, the preset first speed is greater than the washing speed of the washing program; specifically, after the clothes are put in, the washing machine receives a washing instruction, and matches the corresponding parameters such as the amount of detergent, the amount of water intake, and the washing speed according to the weight, material and other information of the clothes. At the same time, the washing machine controls the driving unit to operate, and drives the balancing plate 4 to gradually accelerate and stabilize at the preset first speed. At this time, the preset first speed can be a fixed speed set at the factory, or a variable speed obtained by matching the washing speed; washing starts after the speed of the balancing plate 4 stabilizes.

[0085] Similar to the automatic deviation correction process of the washing program, when the dehydration program is automatically corrected, the driving unit drives the balancing disk 4 to rotate smoothly at a preset second speed, and then the dehydration program starts; specifically, drainage is performed after the washing is completed, and during the drainage process, the washing machine controls the driving unit to start, and drives the balancing disk 4 to gradually accelerate and stabilize at the preset second speed. The preset second speed can be a fixed speed preset at the factory, or it can be a variable speed obtained by matching the dehydration speed obtained according to the amount of laundry.

[0086] The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation scheme in the above embodiment can also be further combined or replaced. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of the solution of the present invention.

Claims

1. A washing machine with an automatic balancing device, the washing machine comprising a tub assembly, a drive shaft and a motor, characterized in that: An automatic balancing device is provided at the bottom of the barrel assembly, and the automatic balancing device includes: A balance plate, located at the bottom of the barrel assembly, is connected to the drive shaft and can rotate independently; The driving unit is connected to the balancing disc in driving mode and is used for driving the balancing disc to rotate.

2. The washing machine with automatic balancing device according to claim 1, characterized in that: The balancing plate comprises: annular part; A shaft sleeve having a shaft hole in the center for the driving shaft to pass through; A support portion, one end of which is connected to the annular portion, and the other end of which is connected to the shaft sleeve; A plurality of support portions are arranged at equal intervals along the circumference of the drive shaft; Preferably, three support parts are provided along the axial direction of the driving shaft.

3. The washing machine with automatic balancing device according to claim 2, characterized in that: The shaft sleeve is a bearing, the inner ring of the bearing is sleeved on the outer side of the driving shaft and remains relatively fixed with the driving shaft, and the supporting part is connected to the outer ring of the bearing.

4. The washing machine with automatic balancing device according to claim 2, characterized in that: The inner surface of the shaft hole on the shaft sleeve is smooth, and is sleeved on the outer side of the drive shaft and slidably connected with the drive shaft; A limiting protrusion for limiting the position of the shaft sleeve is provided on the driving shaft.

5. The washing machine with automatic balancing device according to claim 1, characterized in that: The automatic balancing device comprises at least two balancing discs, which are independently rotatable and connected to the driving shaft and are spaced apart along the length direction of the driving shaft.

6. The washing machine with automatic balancing device according to claim 1, characterized in that: The diameter of the balancing disc is greater than or equal to the diameter of the barrel assembly.

7. A washing machine with an automatic balancing device according to any one of claims 1 to 6, characterized in that: The automatic balancing device also includes, The outer shell is fixed to the bottom of the barrel assembly and is detachably connected to the barrel assembly, and is hollow inside to form a receiving space for receiving the balancing disc; The outer shell is provided with an avoidance hole for the driving shaft to pass through, and the diameter of the avoidance hole is larger than the diameter of the driving shaft.

8. An automatic balancing control method for a washing machine with an automatic balancing device according to any one of claims 1 to 7, characterized in that: After the balancing disc is driven by the driving unit to keep rotating smoothly, the washing program or the dehydration program starts.

9. The automatic balancing control method according to claim 8, characterized in that: Before starting the washing program, the driving unit drives the balancing plate to rotate smoothly at a preset first speed, and the first speed is greater than or equal to the washing speed of the washing program.

10. The automatic balancing control method according to claim 8, characterized in that: Before starting the dehydration program, the driving unit drives the balancing disc to rotate smoothly at a preset second speed, and the second speed is greater than or equal to the maximum dehydration speed of the dehydration program.

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