Washing equipment control method and washing equipment

Abstract

The invention relates to the technical field of washing equipment, particularly provides a control method of washing equipment and the washing equipment, and aims to solve the problem that the existing washing equipment consumes more water during foam removal. In order to achieve the purpose, the control method comprises the steps that a water inlet valve is closed, a drainage valve is opened, an inner barrel intermittently rotates at a first preset speed to dehydrate, and circulation is conducted for preset times. In the process that the inner barrel rotates at the first preset speed, the water content of foam can be reduced, meanwhile, the to-be-cleaned object can make contact with and collide with the foam continuously, and foam breaking is accelerated; meanwhile, in the intermittent stage of the inner barrel, wet foam attached to the outer side wall of the inner barrel naturally flows down along with water flow, so that the foam located on the outer side wall of the inner barrel is removed, and the foam removing effect is improved. According to the process, more foam can be removed in the dewatering stage, more rinsing procedures do not need to be adopted for removing the foam in the subsequent washing procedure, and therefore the water consumption for removing the foam is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of washing equipment, and specifically provides a control method for washing equipment and a washing equipment. Background Art

[0002] With the improvement of the quality of life, washing equipment has become one of the essential household appliances. In some cases, a large amount of foam will be generated during the washing process of washing equipment (such as a washing machine or a shoe washing machine). If the foam cannot be removed in time during the washing process, there will be more washing liquid remaining on the washed clothes, resulting in incomplete cleaning of the clothes.

[0003] At present, the commonly used method for removing foam in washing equipment is to remove the foam by multiple rinsing methods, which will result in a large amount of water consumption.

[0004] Therefore, there is an urgent need for a control method for washing equipment and a washing equipment to solve the problem of excessive water consumption when removing foam in existing washing equipment. Summary of the Invention

[0005] The present invention aims to solve the above technical problems, that is, to solve the problem of excessive water consumption when removing foam in existing washing equipment.

[0006] In a first aspect, the present invention provides a control method for a washing equipment. The washing equipment includes a water inlet pipe, a drain pipe, and an inner cylinder. The water inlet pipe is provided with a water inlet valve, and the drain pipe is provided with a drain valve. The control method for the washing equipment includes: closing the water inlet valve, opening the drain valve, and the inner cylinder intermittently rotates at a first preset speed for dehydration and circulates a preset number of times.

[0007] In a specific implementation manner of the above control method for the washing equipment, the object to be cleaned is agitated during the intermittent time period when the inner cylinder rotates at the first preset speed.

[0008] In a specific implementation manner of the above control method for the washing equipment, the washing equipment is a drum-type washing equipment. During the intermittent time period when the inner cylinder rotates at the first preset speed, the inner cylinder rotates at a second preset speed to agitate the object to be cleaned, and the second preset speed is less than the first preset speed; or, the washing equipment is a pulsator-type washing equipment, including a pulsator. During the intermittent time period when the inner cylinder rotates at the first preset speed, the pulsator is rotated to agitate the object to be cleaned.

[0009] In the specific implementation of the control method of the above washing device, the control method of the washing device further includes: after "closing the water inlet valve, opening the drain valve, and intermittently rotating the inner drum at a first preset speed for dehydration and circulating a preset number of times", opening the water inlet valve and closing the drain valve, and rotating the inner drum at a third preset speed to wash the foam on the surface of the object to be cleaned.

[0010] In the specific implementation of the control method of the above washing device, the washing device further includes an outer drum, the outer drum is sleeved outside the inner drum, and the inner drum rotates relative to the outer drum; the control method of the washing device further includes: obtaining the water level of the inner drum; determining whether to close the water inlet valve and whether the rotation speed of the inner drum is increased from the third preset speed to the fourth preset speed according to the water level of the inner drum, so that the inner drum stirs the water flow to impact and wash the outer drum.

[0011] In the specific implementation of the control method of the above washing device, "determining whether to close the drain valve and whether the rotation speed of the inner drum is increased from the third preset speed to the fourth preset speed according to the water level of the inner drum" includes: if the water level in the inner drum is higher than the preset water level, closing the water inlet valve and increasing the rotation speed of the inner drum from the third preset speed to the fourth preset speed; and / or, if the water level in the inner drum is not higher than the preset water level, keeping the water inlet valve open and keeping the rotation speed of the inner drum at the third preset speed.

[0012] In the specific implementation of the control method of the above washing device, after the inner drum rotates at the fourth preset speed, close the water inlet valve and open the drain valve to drain water.

[0013] In the specific implementation of the control method of the above washing device, before "closing the water inlet valve, opening the drain valve, and intermittently rotating the inner drum at a first preset speed for dehydration", close the water inlet valve and open the drain valve to drain water, and the inner drum stops.

[0014] In the specific implementation of the control method of the above washing device, after "closing the water inlet valve and opening the drain valve to drain water", determine whether the drainage is completed according to the water level frequency change of the washing device.

[0015] In the specific implementation of the control method of the above washing device, "determining whether the drainage is completed according to the water level frequency change of the washing device" includes: if the water level frequency change of the washing device is lower than the preset value, the drainage is completed; and / or, if the water level frequency change of the washing device is not lower than the preset value, the drainage is not completed.

[0016] In the specific implementation of the control method of the above washing device, the control method of the washing device further includes: obtaining the amount of foam in the inner cylinder; determining whether to "close the water inlet valve, open the drain valve, the inner cylinder rotates intermittently at a first preset speed for dehydration, and cycles a preset number of times" according to the amount of foam.

[0017] In the specific implementation of the control method of the above washing device, determining whether to "close the water inlet valve, open the drain valve, the inner cylinder rotates intermittently at a first preset speed for dehydration, and cycles a preset number of times" according to the amount of foam includes: if the amount of foam is greater than a preset amount, then close the water inlet valve and open the drain valve, the inner cylinder rotates intermittently at a first preset speed for dehydration, and cycles a preset number of times.

[0018] In a second aspect, the present invention provides a washing device, including a control module, and the control module is configured to execute the control method of the above washing device.

[0019] Compared with the prior art, the present invention has at least the following beneficial effects:

[0020] For the control method of the washing device provided by the present invention, the washing device includes a water inlet pipe, a drain pipe and an inner cylinder. The water inlet pipe is provided with a water inlet valve, and the drain pipe is provided with a drain valve. The control method of the washing device includes: closing the water inlet valve, opening the drain valve, the inner cylinder rotates intermittently at a first preset speed for dehydration, and cycles a preset number of times. During the process of the inner cylinder rotating at the first preset speed, the water content of the foam can be reduced, and at the same time, the objects to be cleaned can continuously contact and impact the foam, accelerating the foam breakage; at the same time, during the intermittent stage of the inner cylinder, the "wet foam" attached to the outer side wall of the inner cylinder flows down naturally with the water flow, so as to remove the foam located on the outer side wall of the inner cylinder and improve the defoaming effect. The above process can remove more foam during the dehydration stage, and there is no need to adopt more rinsing procedures to remove foam in the subsequent washing procedures, thereby reducing the water consumption for removing foam. Description of the Drawings

[0021] The following describes the preferred embodiments of the present invention with reference to the drawings. In the drawings:

[0022] Figure 1 is a flowchart of the main steps of the control method of the washing device provided by the present invention;

[0023] Figure 2 is a flowchart of the detailed steps of the control method of the washing device provided by the present invention. Detailed Description

[0024] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the present invention and are not intended to limit the protection scope of the present invention.

[0025] It should be noted that in the description of the present invention, the terms indicating directions or positional relationships such as "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0026] In addition, it should also be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "setting", "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 directly connected, or indirectly connected through an intermediate medium, and can also be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0027] In order to solve the problem that the existing washing equipment uses a large amount of water when removing foam, the present invention provides a control method for a washing equipment and a washing equipment.

[0028] The washing equipment includes a drum, a water inlet pipe and a drain pipe. The water inlet pipe is provided with a water inlet valve, and the drain pipe is provided with a drain valve. After the water inlet valve is opened, the water inlet pipe can add tap water into the drum. After the drain valve is opened, the drain pipe can drain the water in the drum.

[0029] Among them, the drum includes an inner drum and an outer drum. The outer drum is fixedly connected to the housing of the washing equipment to maintain stability. The outer drum is sleeved outside the inner drum, and the inner drum can rotate relative to the outer drum. It should be noted that the washing equipment involved in the present invention is applicable to drum washing equipment and agitator washing equipment, and the items to be cleaned include but are not limited to clothes and shoes. For drum washing equipment, the inner drum can be used for washing, rinsing or dehydration. For agitator washing equipment, it also includes an agitator. After the agitator rotates, it can agitate the clothes for washing and rinsing. At this time, the inner drum is mainly used for dehydration.

[0030] The washing equipment also includes a control module, and the control module is configured to execute the control method of the washing equipment.

[0031] As Figure 1 shown, the control method of the washing equipment provided by the present invention includes:

[0032] Close the water inlet valve and open the drain valve. The inner tub rotates intermittently at a first preset speed for dehydration and cycles a preset number of times. Herein, the inner tub rotating intermittently at the first preset speed means that the inner tub rotates at the first preset speed for a period of time and then stops or rotates at a lower speed, and then rotates at the first preset speed for a period of time again, repeating this cycle until the preset number of cycles is reached. In the example of the present invention, the preset number of cycles is 3 times, and the first preset speed is 600 RPM (Revolutions Per Minute).

[0033] During the process of the inner tub rotating at the first preset speed, the water located inside the object to be cleaned can be thrown out, turning the "wet foam" with a higher water content into "dry foam" with a lower water content. After the water content of the foam decreases, the foam is more likely to break, which can accelerate the removal of the foam. At the same time, the object to be cleaned inside the inner tub rotates at a high speed, continuously contacting and hitting the foam. Especially when the water content of the foam is low, it can accelerate the breaking of the foam. Therefore, the process of the inner tub rotating at the first preset speed can accelerate the removal of the foam.

[0034] During the process of the inner tub rotating intermittently at the first preset speed for dehydration, during the process of the inner tub rotating at the first preset speed, under the action of centrifugal force, the water flowing out of the inner tub flows upward along the outer side of the tub wall, making the foam on the outer side wall of the inner tub have a larger water content and continuously replenishing water for the foam on the outer side wall of the inner tub. As a result, the foam on the outer side wall of the inner tub is not easily broken and removed due to its large water content. Even the "dry foam" inside the inner tub may flow to the outside of the inner tub and continuously turn into "wet foam"; at the same time, the adsorption force between the foam and the water is large, and the water on the outer side of the inner tub is not easily thrown out under the action of centrifugal force, forming a flowing water film on the outer side of the inner tub, and the foam adheres to the water film and is not easily thrown out under the action of centrifugal force, resulting in the foam on the outer side of the inner tub being difficult to remove.

[0035] During the intermittent stage of the inner tub (i.e., the inner tub stops or rotates at a lower speed), the water on the outer side wall of the inner tub naturally flows down along the outer side wall of the inner tub under the action of gravity, and the "wet foam" attached to the outer side wall of the inner tub flows down with the water flow, thereby removing the foam on the outer side wall of the inner tub and improving the defoaming effect. At the same time, the inner tub can also agitate the object to be cleaned, causing the object to be cleaned to squeeze the foam and accelerating the breaking of the foam. The above process can remove more foam during the dehydration stage, and there is no need to adopt more rinsing procedures to remove the foam in the subsequent washing process, thereby reducing the water consumption for removing the foam.

[0036] In some possible embodiments, during the intermittent time period when the inner drum rotates at a first preset speed (i.e., the time period from the end of the last rotation of the inner drum at the first preset speed to the start of the next rotation of the inner drum at the first preset speed), the object to be cleaned (e.g., clothes or shoes) is agitated. After the inner drum rotates at the first preset speed for a period of time, the water content of the foam attached to the object to be cleaned decreases. After the object to be cleaned is agitated, the object to be cleaned will squeeze or impact the foam, accelerating the foam rupture.

[0037] For a drum - type washing device, during the intermittent time period when the inner drum rotates at a first preset speed, the inner drum rotates at a second preset speed to agitate the object to be cleaned. Among them, the second preset speed is much less than the first preset speed, and in a specific example of the present invention, it is 10 RPM to 50 RPM.

[0038] For a pulsator - type washing device, during the intermittent time period when the inner drum rotates at a first preset speed, the pulsator is rotated to agitate the object to be cleaned.

[0039] In some examples, before "closing the water inlet valve, opening the drain valve, and the inner drum intermittently rotates at a first preset speed for dehydration", the water inlet valve is closed and the drain valve is opened to drain water, and the inner drum stops. This step is mainly after the object to be cleaned is washed to drain the sewage located in the washing device, so as to facilitate rotating the inner drum for dehydration.

[0040] Among them, the method for determining whether the drainage is completed includes:

[0041] Determine whether to rotate the inner drum according to the water level frequency change in the washing device. Specifically, it includes: if the water level frequency change in the washing device is lower than the preset value, it means that the water in the inner drum has been basically drained; if the water level frequency change in the washing device is not lower than the preset value, it means that the water in the inner drum has not been completely drained. Among them, the frequency - type water level sensor can detect the frequency of the water in the washing device, obtain the water level according to the frequency of the water, and the water level frequency change is the change amount of the water level frequency per unit time, which is the water level frequency change within 5S in this example.

[0042] In some examples, after "closing the water inlet valve, opening the drain valve, the inner drum intermittently rotates at a first preset speed for dehydration, and circulates a preset number of times", the water inlet valve is opened and the drain valve is closed, and the inner drum rotates at a third preset speed to wash the foam on the surface of the object to be cleaned, and at the same time, it can also rinse the object to be cleaned. In this process, mainly use the water flow entering from the water inlet pipe to wash the foam on the surface of the object to be cleaned, and the inner drum rotates at a third preset speed to flip and agitate the clothes so that the clear water can fully wash the foam on the surface of the clothes. And during this process, the water level in the inner drum will gradually rise. Among them, in a specific example of the present invention, the third preset speed is 10 RPM to 50 RPM.

[0043] In some examples, the control method of the washing device provided by the present invention further includes:

[0044] Obtain the water level of the inner tub, and determine whether to close the water inlet valve and whether the rotation speed of the inner tub is increased from a third preset speed to a fourth preset speed according to the water level of the inner tub, so that the inner tub agitates the water flow to impact and wash the outer tub. Specifically, it includes: if the water level in the inner tub is higher than the preset water level, close the water inlet valve and increase the rotation speed of the inner tub from the third preset speed to the fourth preset speed; if the water level in the inner tub is not higher than the preset water level, keep the water inlet valve open and keep the rotation speed of the inner tub at the third preset speed.

[0045] The inner tub drives the clothes to rotate for rinsing. At the same time, the inner tub can also agitate the water flow so that the water flow impacts and washes the inner surface of the outer tub, washing away the foam attached to the inner surface of the outer tub, so as to prevent the foam attached to the inner surface of the outer tub from dripping into the inner tub and contaminating the washed clothes during other washing processes. Among them, the fourth preset speed is greater than the third preset speed, for example, 450 RPM. It should be noted that for a pulsator washing device, the pulsator rotates at the fourth preset speed.

[0046] After closing the water inlet valve, the water level in the inner tub no longer rises. On the premise of ensuring the rinsing effect, it can also avoid excessive resistance of the agitated water flow after the inner tub rotates, which affects the effect of impacting and washing the outer tub.

[0047] After the inner tub rotates at the fourth preset speed to rinse the object to be cleaned and impact and wash the inner side wall of the outer tub, close the water inlet valve and open the drain valve to drain water. After the drainage is completed, the inner tub rotates at a fifth preset speed for dehydration.

[0048] In some examples, the above control method is built into the washing device, and the corresponding washing process is carried out according to the washing program selected by the user. For example, if the user selects the defoaming mode, the above control method is executed.

[0049] Of course, in some examples, the control method of the washing device further includes: obtaining the amount of foam in the inner tub, and determining whether to "close the water inlet valve, open the drain valve, the inner tub intermittently rotates at a first preset speed for dehydration, and cycles a preset number of times", that is, whether to enter the defoaming mode. Specifically, it includes: if the amount of foam is greater than the preset amount, it means that the conventional washing mode is not the optimal washing solution, which may cause waste of water resources or incomplete cleaning. Therefore, close the water inlet valve, open the drain valve, the inner tub intermittently rotates at a first preset speed for dehydration, and cycles a preset number of times to enter the defoaming mode; if the amount of foam is not greater than the preset amount, do not enter the defoaming mode and execute the conventional washing mode.

[0050] In summary, as Figure 2 shown, the specific steps of the control method of the washing device provided by the present invention include:

[0051] S1. Obtain the amount of foam in the washing device. This step is usually carried out after the washing stage is completed.

[0052] S2. Determine whether the amount of foam is greater than the preset amount. If the amount of foam is greater than the preset amount, it indicates that the current washing program may be difficult to completely eliminate the foam, resulting in incomplete washing, or the water consumption for eliminating the foam is too large. At this time, execute step S3 and enter the defoaming mode; if the amount of foam is not greater than the preset amount, execute step S21.

[0053] S21. Execute the current washing program.

[0054] S3. Close the water inlet valve and open the drain valve to drain the water in the washing device.

[0055] S31. Obtain the change in water level frequency within 5S.

[0056] S32. Determine whether the change in water level frequency is lower than the preset value. If the change in water level frequency is lower than the preset value, it indicates that the water in the washing device has been basically drained, and execute step S4; if the change in water level frequency is not lower than the preset value, it indicates that the water in the washing device has not been drained completely, and continue to execute step S32 after an interval of time.

[0057] S4. Close the water inlet valve and open the drain valve. The inner drum rotates intermittently at a first preset speed for dehydration and cycles a preset number of times. Among them, after the inner drum rotates at the first preset speed for the first preset time, the inner drum rotates at a second preset speed for the second preset time, and then rotates at the first preset speed for the first preset time until after cycling the preset number of times, execute step S5. The first preset speed is specifically 600 RPM, and the second preset speed is specifically 50 RPM.

[0058] During the process of the inner drum rotating at the first preset speed, under the action of centrifugal force, the water in the object to be cleaned can be thrown out, so as to reduce the water content of the object to be cleaned and the water content of the foam attached to the surface of the object to be cleaned. After the water content of the foam decreases, the foam is more likely to break, which can accelerate the removal of the foam. At the same time, the object to be cleaned in the inner drum rotates at a high speed, which can squeeze the foam and deform it. Especially when the water content of the foam is low, it can accelerate the breaking of the foam. In addition, when the water content of the foam is low, the object to be cleaned in the inner drum rotates at a high speed, and the foam will continuously contact and impact the foam, accelerating the breaking of the foam.

[0059] During the rotation of the inner cylinder at the second preset speed, the water on the outer wall of the inner cylinder flows down naturally along the outer wall of the inner cylinder under the action of gravity, and the foam adhering to the outer wall of the inner cylinder flows down naturally with the water flow, thereby removing the foam on the outer wall of the inner cylinder and improving the defoaming effect. At the same time, the inner cylinder can also agitate the object to be cleaned, causing the object to be cleaned to squeeze the foam and accelerating the foam rupture. In the above process, more foam can be removed during the dehydration stage, and there is no need to adopt more rinsing procedures to remove foam in the subsequent washing program, thereby reducing the water consumption for removing foam.

[0060] S5. Open the water inlet valve and close the drain valve. The inner cylinder rotates at the third preset speed to rinse the foam on the surface of the object to be cleaned, and at the same time, it can also rinse the object to be cleaned. The third preset speed is 50 RPM, and step S51 is executed while step S5 is being executed.

[0061] S51. Obtain the water level of the inner cylinder.

[0062] S52. Determine whether the water level in the inner cylinder is higher than the preset water level. If the water level in the inner cylinder is higher than the preset water level, execute step S6; if the water level in the inner cylinder is not higher than the preset water level, continue to execute step S5.

[0063] S6. Close the water inlet valve and the inner cylinder rotates at the fourth preset speed, causing the inner cylinder to agitate the water flow to impact and wash the outer cylinder. The inner cylinder can agitate the water flow so that the water flow impacts and washes the inner surface of the outer cylinder, washing away the foam adhering to the inner surface of the outer cylinder, so as to prevent the foam adhering to the inner surface of the outer cylinder from dripping into the inner cylinder and contaminating the washed clothes in other washing processes. After closing the water inlet valve, the water level in the inner cylinder will not rise, and on the premise of ensuring the rinsing effect, it can also avoid excessive resistance of the agitated water flow after the inner cylinder rotates and affect the effect of impacting and washing the outer cylinder. The fourth preset speed is 450 RPM. After step S6 is executed for the third preset time, execute step S7.

[0064] S7. Close the water inlet valve and open the drain valve to drain the water in the rotating cylinder.

[0065] S71. Obtain the water level frequency change within 5S.

[0066] S72. Determine whether the water level frequency change is lower than the preset value. If the water level frequency change is lower than the preset value, it means that the water in the washing equipment has been basically drained, and execute step S8; if the water level frequency change is not lower than the preset value, it means that the water in the washing equipment has not been drained completely, and continue to execute step S72 after an interval of time.

[0067] S8. Rotate the inner cylinder at the fifth preset speed for dehydration. This step lasts for the fourth preset time, and then the program ends. The fifth preset speed is specifically 600 RPM.

[0068] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easily understood by those skilled in the art that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present invention.

Claims

1. A control method for a washing device, the washing device comprising a water inlet pipe, a drain pipe and an inner tub, the water inlet pipe being provided with a water inlet valve, the drain pipe being provided with a drain valve, characterized in that, The control method of the washing device includes: Closing the water inlet valve, opening the drain valve, and intermittently rotating the inner drum at a first preset speed for dehydration, and repeating for a preset number of cycles.

2. The control method of the washing device according to claim 1, characterized in that Agitating the object to be cleaned during the intermittent period when the inner drum rotates at the first preset speed.

3. The control method of the washing device according to claim 2, characterized in that The washing device is a drum-type washing device. During the intermittent period when the inner drum rotates at the first preset speed, the inner drum rotates at a second preset speed to agitate the object to be cleaned, and the second preset speed is less than the first preset speed; or, The washing device is a pulsator-type washing device including a pulsator. During the intermittent period when the inner drum rotates at the first preset speed, the pulsator is rotated to agitate the object to be cleaned.

4. The control method of the washing device according to claim 1, wherein, The control method of the washing device further includes: After "closing the water inlet valve, opening the drain valve, and intermittently rotating the inner drum at a first preset speed for dehydration, and repeating for a preset number of cycles", opening the water inlet valve and closing the drain valve, and rotating the inner drum at a third preset speed to rinse the foam on the surface of the object to be cleaned.

5. The control method of the washing device according to claim 4, characterized in that, The washing device further includes an outer drum sleeved outside the inner drum, and the inner drum rotates relative to the outer drum; The control method of the washing device further includes: Obtaining the water level of the inner drum; Determining whether to close the water inlet valve and whether the rotation speed of the inner drum is increased from the third preset speed to the fourth preset speed according to the water level of the inner drum, so that the inner drum agitates the water flow to impact and wash the outer drum.

6. The control method of the washing device according to claim 5, characterized in that, "Determining whether to close the drain valve and whether the rotation speed of the inner drum is increased from the third preset speed to the fourth preset speed according to the water level of the inner drum" includes: If the water level in the inner drum is higher than the preset water level, closing the water inlet valve and increasing the rotation speed of the inner drum from the third preset speed to the fourth preset speed; and / or, If the water level in the inner drum is not higher than the preset water level, keeping the water inlet valve open and keeping the rotation speed of the inner drum at the third preset speed.

7. The control method of the washing device according to claim 6, characterized in that, After the inner drum rotates at the fourth preset speed, closing the water inlet valve and opening the drain valve to drain water.

8. The control method of the washing device according to claim 1, characterized in that Before "closing the water inlet valve, opening the drain valve, and intermittently rotating the inner drum at a first preset speed for dehydration", closing the water inlet valve and opening the drain valve to drain water, and the inner drum stops.

9. The control method of the washing device according to claim 7 or 8, characterized in that After "closing the water inlet valve and opening the drain valve to drain water", determining whether the drainage is completed according to the change in the water level frequency of the washing device.

10. The control method of the washing device according to claim 9, characterized in that, "Determining whether the drainage is completed according to the change in the water level frequency of the washing device" includes: If the change in the water level frequency of the washing device is lower than the preset value, the drainage is completed; and / or, If the change in the water level frequency of the washing device is not lower than the preset value, the drainage is not completed.

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