Pulsator washing machine, control method and control device thereof and storage medium

Abstract

The invention relates to the technical field of washing equipment, and provides a pulsator washing machine, a control method thereof, a control device and a storage medium, the pulsator washing machine comprises a box body and a washing drum arranged in the box body, the washing drum is installed on the box body through a suspension system, and a liquid balance ring is installed above the washing drum; the control method comprises the steps of controlling the washing drum to rotate at a first rotating speed; wherein the first rotating speed is lower than the resonance rotating speed of the suspension system; the liquid level change condition in the liquid balance ring is obtained; determining an eccentric value of the clothes based on the liquid level change condition; and controlling the dehydration process of the pulsator washing machine based on the eccentric value. When the rotating speed of a washing drum is low (lower than the resonance rotating speed of a suspension system), the gathering direction of liquid and the clothes load eccentricity are in the same phase, that is, the liquid gathers towards the same side of the clothes load eccentricity, and the clothes eccentricity value can be detected by detecting the liquid level change condition of a liquid balance ring, so that the detection accuracy is improved; the support is provided for the subsequent dehydration process.

Description

Technical Field

[0001] The present application belongs to the technical field of washing equipment, and in particular relates to a pulsator washing machine and a control method, a control device and a storage medium thereof. Background Art

[0002] In the related art, the washing drum of the drum washing machine is placed horizontally. During the washing process, the clothing load is periodically raised to a high point as the drum rotates, and then falls back to a low point. During this process, the uneven distribution of the clothing load (i.e., eccentricity) will cause fluctuations in the motor electrical signal. Therefore, the drum washing machine uses the fluctuations in the motor electrical signal to accurately detect the eccentricity of the clothing load. However, the washing drum of the pulsator washing machine is placed vertically, and the operation does not involve the height changes of the clothing load. Therefore, the method of using the fluctuations in the motor electrical signal to detect eccentricity is not applicable to the pulsator washing machine and has low accuracy. Summary of the invention

[0003] The embodiments of the present application provide a control method, a control device, a pulsator washing machine and a storage medium to solve the problem of low accuracy of the existing eccentricity detection method for a pulsator washing machine.

[0004] In a first aspect, an embodiment of the present application provides a control method for a pulsator washing machine, wherein the pulsator washing machine comprises a housing and a washing drum disposed in the housing, wherein the washing drum is mounted on the housing through a suspension system, and a liquid balance ring is mounted above the washing drum, wherein the control method comprises:

[0005] Controlling the washing tub to rotate at a first speed; wherein the first speed is lower than the resonant speed of the suspension system;

[0006] Obtaining the change of the liquid level in the liquid balance ring;

[0007] Determining the eccentricity value of the clothing based on the liquid level change;

[0008] Based on the eccentricity value, the dehydration process of the pulsator washing machine is controlled.

[0009] In some embodiments of the present application, determining the eccentricity value of the clothing based on the change in the liquid level includes:

[0010] Determining the maximum value of the liquid level in the liquid balance ring during the rotation of the washing drum;

[0011] Based on the maximum value, the eccentricity value is calculated.

[0012] In some embodiments of the present application, the calculation of the eccentricity value based on the maximum value includes:

[0013] The maximum value is matched with a preset mapping relationship to determine the eccentricity value; wherein the preset mapping relationship is a pre-calibrated mapping relationship between the liquid level value and the eccentricity.

[0014] In some embodiments of the present application, controlling the dehydration process of the pulsator washing machine based on the eccentricity value includes:

[0015] When the eccentricity value is greater than a preset eccentricity threshold, the washing drum is controlled to perform a shaking procedure until the eccentricity value is less than or equal to the preset eccentricity threshold.

[0016] In some embodiments of the present application, the controlling the dehydration process of the pulsator washing machine based on the eccentricity value further includes:

[0017] When the eccentricity value is less than or equal to the preset eccentricity threshold, the washing tub is controlled to be dehydrated at a second speed; wherein the second speed is greater than the first speed.

[0018] In some embodiments of the present application, before controlling the washing tub to rotate at the first speed, the method further includes:

[0019] The washing tub is controlled to execute a shaking procedure, and after the shaking time reaches a preset time, the step of controlling the washing tub to rotate at a first speed is executed.

[0020] In some embodiments of the present application, the first rotation speed is 20-50prm; and / or the liquid balance ring is a saline balance ring.

[0021] In a second aspect, an embodiment of the present application provides a control device for a pulsator washing machine, the pulsator washing machine comprising a housing and a washing drum disposed in the housing, the washing drum being mounted on the housing through a suspension system, and a liquid balance ring being mounted above the washing drum, the control device comprising:

[0022] A first control module, used for controlling the washing tub to rotate at a first speed; wherein the first speed is lower than a resonant speed of the suspension system;

[0023] An acquisition module, used to acquire the liquid level change in the liquid balance ring;

[0024] A determination module, used to determine the eccentricity value of the clothing based on the change of the liquid level;

[0025] The second control module is used to control the dehydration process of the pulsator washing machine based on the eccentricity value.

[0026] In a third aspect, an embodiment of the present application provides a pulsator washing machine, comprising:

[0027] Box;

[0028] A washing drum is mounted on the box body through a suspension system, and a liquid balance ring is installed above the washing drum;

[0029] A plurality of liquid level sensors are installed on the liquid balance ring at intervals along the circumference of the liquid balance ring, and are used to detect the liquid level height in the liquid balance ring;

[0030] A controller is connected to the liquid level sensor and the washing tub, and is configured to execute the control method of the pulsator washing machine described in the above embodiment.

[0031] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the control method for a pulsator washing machine as described in the above embodiment.

[0032] The control method of the pulsator washing machine provided in the embodiment of the present application comprises a housing and a washing drum arranged in the housing, the washing drum is installed on the housing through a suspension system, and a liquid balance ring is installed above the washing drum, and the control method comprises: controlling the washing drum to rotate at a first speed; wherein the first speed is lower than the resonant speed of the suspension system; obtaining the liquid level change in the liquid balance ring; determining the eccentricity value of the clothes based on the liquid level change; and controlling the dehydration process of the pulsator washing machine based on the eccentricity value. When the speed of the washing drum is low (lower than the resonant speed of the suspension system), the gathering direction of the liquid is in phase with the eccentricity of the clothes load, that is, the liquid will gather on the same side of the eccentricity of the clothes load, and the eccentricity value of the clothes can be detected by detecting the liquid level change of the liquid balance ring, thereby improving the accuracy of the detection and providing support for the subsequent dehydration process. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0034] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings. In the following description, the same reference numerals represent the same parts.

[0035] Figure 1 Schematic diagram of the control method of the pulsator washing machine provided in the embodiment of the present application Figure 1 .

[0036] Figure 2 Schematic diagram of the control method of the pulsator washing machine provided in the embodiment of the present application Figure 2 .

[0037] Figure 3 A schematic diagram of the structure of a control device for a pulsator washing machine provided in an embodiment of the present application.

[0038] Figure 4 This is a schematic diagram of a pulsator washing machine provided in an embodiment of the present application in a stationary state.

[0039] Figure 5 This is a schematic diagram of a pulsator washing machine provided in an embodiment of the present application at a first speed.

[0040] Figure 6 A schematic diagram of the arrangement of the liquid level sensor provided in an embodiment of the present application.

[0041] Figure 7 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application.

[0042] Reference numerals:

[0043] 100. Box body; 200. Washing drum; 300. Suspension system; 210. Liquid balance ring; 220. Liquid level sensor. DETAILED DESCRIPTION

[0044] The following is a further detailed description of the implementation of the present application in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application but cannot be used to limit the scope of the present application.

[0045] In the description of the embodiments of the present application, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0046] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" 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 mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0047] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0048] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0049] The washing drum of a drum washing machine is horizontal, with the clothing loading port facing forward. When the clothing load rotates against the drum, the clothing load is lifted to a high place and then moved to a low place, and this cycle is repeated. As the eccentricity of the clothing load undergoes height changes, the electrical signal of the motor fluctuates, and there is a certain relationship between the eccentricity and the fluctuation of the electrical signal of the motor. The drum washing machine detects eccentricity through the fluctuation of the electrical signal of the motor, while the pulsator washing machine is vertical, with the clothing loading port facing upward. When the clothing load rotates against the wall, there is no height change from a low place to a high place. Therefore, the detection of the eccentricity through the fluctuation of the electrical signal of the motor is not applicable to pulsator washing machines, or the accuracy is poor.

[0050] The present application provides a pulsator washing machine and a control method, a control device and a storage medium thereof, so as to solve the problem that the existing pulsator washing machine eccentricity detection method has low accuracy. Figure 1-7 Provide explanation.

[0051] The control method of the pulsator washing machine provided in the embodiment of the present application can be applied to the pulsator washing machine. For example, refer to Figure 4-Figure 6 As shown, the pulsator washing machine includes a housing 100 and a washing tub 200 disposed in the housing 100 . The washing tub 200 is installed on the housing 100 through a suspension system 300 , and a liquid balance ring 210 is installed above the washing tub 200 .

[0052] Exemplarily, the housing 100 is the main shell of the washing machine, and the washing drum 200 includes an inner drum and an outer drum, wherein the inner drum is used to hold the clothes to be washed, and the outer drum is installed in the housing 100 through a suspension rod. The washing drum 200 and the suspension rod constitute a suspension system 300 of the pulsator washing machine, and the suspension system 300 can absorb and reduce the vibration generated by the rotation of the pulsator during the washing process, so that the washing machine runs more smoothly. For example, the washing drum 200 is supported on the housing 100 of the washing machine through the suspension rod. The pulsator washing machine is usually equipped with a liquid balance ring 210. When the washing drum 200 is dehydrated and rotated and reaches a certain rotation speed, the liquid in the liquid balance ring 210 will automatically gather to the side opposite to the eccentricity of the clothes load, and automatically balance the eccentricity of the clothes load.

[0053] It is understandable that the liquid in the liquid balance ring 210 can be water, salt water or other liquids. In an optional embodiment, the liquid balance ring 210 is a salt water balance ring, and the density of salt water is relatively large, and it has a relatively large weight under the same volume, which is convenient for load balancing of the pulsator washing machine.

[0054] See also Figure 1 , Figure 1 A flow chart of a control method for a pulsator washing machine provided in an embodiment of the present application. The control method for a pulsator washing machine includes:

[0055] S101: controlling the washing tub to rotate at a first speed; wherein the first speed is lower than a resonance speed of the suspension system;

[0056] It is understandable that in a stationary state, that is, when the washing drum is not rotating, the liquid height at various locations along the circumferential direction in the liquid balance ring is uniform. When the washing drum is dehydrated and rotates and reaches a certain rotation speed (generally after the resonance speed of the suspension system of the pulsator washing machine), the liquid will automatically gather to the side opposite to the eccentricity of the clothing load, automatically balancing the eccentricity of the clothing load. However, when the rotation speed of the washing drum is at a low value (before the resonance speed of the suspension system of the pulsator washing machine), the gathering direction of the liquid is in phase with the eccentricity of the clothing load, that is, the liquid will gather to the same side of the eccentricity of the clothing load, so it can be used to measure the eccentricity value of the clothing.

[0057] In an optional embodiment, the first rotation speed is 20-50 revolutions per minute (RPM), such as 20RPM, 30RPM, 40RPM, 50RPM, etc.

[0058] Existing pulsator washing machines usually experience the first modal resonance at 60RPM. Therefore, when the first speed of the pulsator washing machine is set to 20-50RPM, the resonance of the suspension system has not yet occurred. Due to the centrifugal force, the liquid will concentrate on the eccentric side of the washing drum.

[0059] S102: Obtaining the change of the liquid level in the liquid balance ring;

[0060] Exemplarily, a plurality of liquid level sensors are arranged along the circumferential direction in the liquid balance ring. When the washing drum rotates, the liquid level sensors will record the changes of the liquid level in the liquid balance ring in real time.

[0061] S103: Determine the eccentricity value of the clothing based on the change in the liquid level;

[0062] Exemplarily, the method for determining the eccentricity value of the clothes based on the change in liquid level may include: determining the maximum value of the liquid level in the liquid balance ring during the rotation of the washing drum; and calculating the eccentricity value based on the maximum value.

[0063] Due to the eccentricity of the clothes, the liquid will gather on one side of the eccentricity, causing the liquid level sensor on that side to detect a higher liquid level. By detecting the maximum value of the liquid level in the liquid balance ring during the rotation of the washing drum, the size of the eccentricity of the clothes can be measured. The larger the maximum value of the liquid level detected, the greater the eccentricity of the clothes load.

[0064] In this embodiment, the eccentricity value of the clothing is determined by the maximum value of the liquid level rather than the average value or other values, because the maximum value of the liquid level can better reflect the eccentricity of the clothing, so as to accurately calculate the eccentricity value.

[0065] Exemplarily, based on the maximum value, the method for calculating the eccentricity value includes: matching the maximum value with a preset mapping relationship to determine the eccentricity value; wherein the preset mapping relationship is a pre-calibrated mapping relationship between the liquid level value and the eccentricity amount.

[0066] It is understandable that the preset mapping relationship may be a table or a specific functional relationship.

[0067] Specifically, during the design and manufacturing stage of the pulsator washing machine, a mapping relationship table between the liquid level value and the eccentricity is established in advance through experiments and tests, and the mapping relationship table contains the corresponding relationship between the liquid level value and the eccentricity. The detected maximum liquid level value is compared with the liquid level value in the mapping relationship table to find the closest liquid level value. After finding the matching liquid level value, the corresponding eccentricity is directly read. If the detected maximum liquid level value does not have a directly corresponding value in the mapping relationship table, the interpolation method can be used to calculate the eccentricity value.

[0068] For example, if the liquid level heights in the mapping table are 10, 20, 30, 40, and 50, the corresponding eccentricities are 2, 4, 6, 8, and 10, respectively. When the maximum liquid level value detected is 25, find the two data points with the liquid level value closest to 25: 20 (corresponding to eccentricity 4) and 30 (corresponding to eccentricity 6). Then eccentricity = 4 + (25-20) * (6-4) / (30-20) = 5. Therefore, based on the maximum liquid level value detected, the eccentricity calculated by interpolation is 5.

[0069] S104: Based on the eccentricity value, controlling the dehydration process of the pulsator washing machine.

[0070] After determining the eccentricity of the clothes, the control system of the washing machine will adjust the dehydration process according to this value. If the eccentricity value is within the acceptable range, the washing machine can continue to dehydrate at a higher speed. If the eccentricity value exceeds the safe range, the control system may automatically adjust the speed of the washing drum, or redistribute the clothes through a specific shaking program to reduce the eccentricity, and then test again until the eccentricity value meets the requirements before high-speed dehydration.

[0071] For example, reference Figure 2 As shown, based on the eccentricity value, controlling the dehydration process of the pulsator washing machine includes: when the eccentricity value is greater than the preset eccentricity threshold, controlling the washing drum to perform a shaking program until the eccentricity value is less than or equal to the preset eccentricity threshold.

[0072] Optionally, the shaking program may include controlling the washing drum to briefly rotate in reverse, rotate at a variable speed, or in a specific vibration mode, in order to redistribute the clothes in the washing drum and reduce eccentricity. The duration or number of the shaking program may be determined according to the size of the eccentricity value and the specific design of the washing machine, which is not specifically limited in this embodiment.

[0073] Furthermore, when the eccentricity value is less than or equal to the preset eccentricity threshold, the washing drum is controlled to dehydrate at a second speed; wherein the second speed is greater than the first speed to achieve an efficient and fast dehydration effect. Optionally, the speed value of the second speed can be adaptively adjusted according to the detected eccentricity value, so as to improve the dehydration efficiency as much as possible while ensuring the safety of dehydration.

[0074] Furthermore, before controlling the washing drum to rotate at a first speed, the method also includes: controlling the washing drum to execute a shaking program, and after the shaking time reaches a preset time, executing the step of controlling the washing drum to rotate at the first speed to ensure that the clothes are distributed as evenly as possible before detecting the eccentricity value, thereby improving the dehydration efficiency.

[0075] The control method of the pulsator washing machine provided in the embodiment of the present application comprises a housing and a washing drum arranged in the housing, the washing drum is installed on the housing through a suspension system, and a liquid balance ring is installed above the washing drum, and the control method comprises: controlling the washing drum to rotate at a first speed; wherein the first speed is lower than the resonant speed of the suspension system; obtaining the liquid level change in the liquid balance ring; determining the eccentricity value of the clothes based on the liquid level change; and controlling the dehydration process of the pulsator washing machine based on the eccentricity value. When the speed of the washing drum is low (lower than the resonant speed of the suspension system), the gathering direction of the liquid is in phase with the eccentricity of the clothes load, that is, the liquid will gather on the same side of the eccentricity of the clothes load, and the eccentricity value of the clothes can be detected by detecting the liquid level change of the liquid balance ring, thereby improving the accuracy of the eccentricity detection and providing support for the subsequent dehydration process.

[0076] In a second aspect, an embodiment of the present application provides a control device for a pulsator washing machine, the pulsator washing machine comprising a housing and a washing drum arranged in the housing, the washing drum being mounted on the housing through a suspension system, and a liquid balance ring being mounted above the washing drum, Figure 3 As shown, the control device includes:

[0077] The first control module 301 is used to control the washing tub to rotate at a first speed; wherein the first speed is lower than the resonance speed of the suspension system;

[0078] An acquisition module 302 is used to acquire the liquid level change in the liquid balance ring;

[0079] A determination module 303, for determining an eccentricity value of the clothing based on a change in the liquid level;

[0080] The second control module 304 is used to control the dehydration process of the pulsator washing machine based on the eccentricity value.

[0081] It can be understood that the control device can be used to execute the control method of the pulsator washing machine of the above embodiment to detect the eccentricity value of the clothes and control the dehydration process of the pulsator washing machine, which will not be described in detail in this embodiment.

[0082] In a third aspect, the present application provides a pulsator washing machine, Figure 4-Figure 6 As shown, the pulsator washing machine includes a housing 100, a washing drum 200, a liquid level sensor 220 and a controller. The washing drum 200 is installed on the housing 100 through a suspension system 300, and a liquid balance ring 210 is installed above the washing drum 200; a plurality of liquid level sensors 220 are installed on the liquid balance ring 210 at circumferential intervals along the liquid balance ring 210, and are used to detect the liquid level height in the liquid balance ring 210; the controller is connected to the liquid level sensor 220 and the washing drum 200, and is configured to execute the control method of the pulsator washing machine of the above embodiment.

[0083] Exemplarily, a plurality of liquid level sensors 220 are evenly distributed at the bottom of the liquid balance ring 210 to ensure accurate liquid level detection during the washing process.

[0084] Figure 7 An example of a physical structure diagram of an electronic device is shown in FIG. Figure 7 As shown, the electronic device may include: a processor 701 (processor), a communication interface 702 (Communications Interface), a memory 703 (memory) and a bus 704, wherein the processor 701, the communication interface 702, and the memory 703 communicate with each other through the communication bus 704. The processor 701 may call the logic instructions in the memory 703 to execute the steps of the control method of the pulsator washing machine.

[0085] In addition, the logic instructions in the above-mentioned memory 703 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on such an understanding, the technical solution of the present application can be embodied in the form of a software product, which is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory 703 (ROM, Read-Only Memory), a random access memory 703 (RAM, Random Access Memory), a disk or an optical disk, and other media that can store program codes.

[0086] On the other hand, an embodiment of the present application also provides a computer program product, which includes a computer program stored on a computer-readable storage medium, and the computer program includes program instructions. When the program instructions are executed by a computer, the computer can execute the control method of the pulsator washing machine provided by the above-mentioned method embodiments.

[0087] On the other hand, an embodiment of the present application further provides a computer-readable storage medium having a computer program stored thereon, which is implemented when the processor 701 executes the control method of the pulsator washing machine provided in the above embodiments.

[0088] Computer-readable storage media can be any available media or data storage devices that can be accessed by the processor, including but not limited to magnetic storage (such as floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO), etc.), optical storage (such as CD, DVD, BD, HVD, etc.), and semiconductor storage (such as ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state drive (SSD)), etc.

[0089] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, i.e., they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Those of ordinary skill in the art may understand and implement it without creative effort.

[0090] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods of each embodiment or some parts of the embodiment.

[0091] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0092] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A control method for a pulsator washing machine, characterized in that: The pulsator washing machine comprises a box body and a washing drum arranged in the box body, the washing drum is mounted on the box body through a suspension system, and a liquid balance ring is installed above the washing drum, and the control method comprises: Controlling the washing tub to rotate at a first speed; wherein the first speed is lower than the resonant speed of the suspension system; Obtaining the change of the liquid level in the liquid balance ring; Determining the eccentricity value of the clothing based on the liquid level change; Based on the eccentricity value, the dehydration process of the pulsator washing machine is controlled.

2. The control method of a pulsator washing machine according to claim 1, characterized in that: The determining the eccentricity value of the clothing based on the liquid level change includes: Determining the maximum value of the liquid level in the liquid balance ring during the rotation of the washing drum; Based on the maximum value, the eccentricity value is calculated.

3. The control method of a pulsator washing machine according to claim 2, characterized in that: The calculating the eccentricity value based on the maximum value comprises: The maximum value is matched with a preset mapping relationship to determine the eccentricity value; wherein the preset mapping relationship is a pre-calibrated mapping relationship between the liquid level value and the eccentricity.

4. The control method of a pulsator washing machine according to claim 1, characterized in that: The step of controlling the dehydration process of the pulsator washing machine based on the eccentricity value comprises: When the eccentricity value is greater than a preset eccentricity threshold, the washing drum is controlled to perform a shaking procedure until the eccentricity value is less than or equal to the preset eccentricity threshold.

5. The control method of a pulsator washing machine according to claim 4, characterized in that: The step of controlling the dehydration process of the pulsator washing machine based on the eccentricity value further includes: When the eccentricity value is less than or equal to the preset eccentricity threshold, the washing tub is controlled to be dehydrated at a second speed; wherein the second speed is greater than the first speed.

6. The control method of a pulsator washing machine according to claim 1, characterized in that: Before controlling the washing tub to rotate at the first speed, the method further includes: The washing tub is controlled to execute a shaking procedure, and after the shaking time reaches a preset time, the step of controlling the washing tub to rotate at a first speed is executed.

7. The control method of a pulsator washing machine according to claim 1, characterized in that: The first rotation speed is 20-50prm; and / or the liquid balance ring is a saline balance ring.

8. A control device for a pulsator washing machine, characterized in that: The pulsator washing machine comprises a box body and a washing drum arranged in the box body, the washing drum is installed on the box body through a suspension system, and a liquid balance ring is installed above the washing drum, and the control device comprises: A first control module, used for controlling the washing tub to rotate at a first speed; wherein the first speed is lower than a resonant speed of the suspension system; An acquisition module, used to acquire the liquid level change in the liquid balance ring; A determination module, used to determine the eccentricity value of the clothing based on the change of the liquid level; The second control module is used to control the dehydration process of the pulsator washing machine based on the eccentricity value.

9. A pulsator washing machine, characterized in that: include: Box; A washing drum is mounted on the box body through a suspension system, and a liquid balance ring is installed above the washing drum; A plurality of liquid level sensors are installed on the liquid balance ring at intervals along the circumference of the liquid balance ring, and are used to detect the liquid level height in the liquid balance ring; A controller is connected to the liquid level sensor and the washing tub, and is configured to execute the control method of the pulsator washing machine according to any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the control method of the pulsator washing machine as described in any one of claims 1 to 7 are implemented.

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