WO2020216067A1

WO2020216067A1 - Washing machine control method and washing machine

Info

Publication number: WO2020216067A1
Application number: PCT/CN2020/083882
Authority: WO
Inventors: 刘尊安; 杨丽梅; 徐杰; 刘云凤
Original assignee: 青岛海尔洗衣机有限公司; 海尔智家股份有限公司
Priority date: 2019-04-23
Filing date: 2020-04-09
Publication date: 2020-10-29
Also published as: CN111850951A; CN111850951B

Abstract

Provided are a washing machine control method and a washing machine, the control method is, when the washing process ends, the inner tub is controlled to execute the load redistribution stage and the spray stage in sequence, the load redistribution stage is to control the operation of the inner tub (3) to redistribute the load during the draining process and/or after the draining ends, the spray stage is to control the operation of the inner tub (3) and to perform spraying after the load redistribution stage ends. The control method is to control the inner tub (3) to operate unidirectionally at a certain speed during the draining process or after the draining ends, so that a cavity is formed in the inner tub (3), then the inner tub (3) is controlled to operate slowly and spray the inner tub (3), the thread scraps on the load surface are flushed off and flow out of the inner tub (3) from the cavity, so as to achieve the purpose of removing the thread scraps.

Description

Control method of washing machine and washing machine

Technical field

The invention belongs to the field of laundry treatment equipment, and specifically relates to a control method of a washing machine and a washing machine.

Background technique

When the washing machine washes the clothes, some lint, dirt and foam tend to float on the water. And because there is no water between the tubs/outer tubs and other non-porous inner tub washing machines, the inner tub has no dehydration holes in the structure. When draining, all water is drained from the bottom. The evenly distributed clothes naturally form a filter for draining. The thread scraps, dirt and foam floating above the water are isolated by the clothes. Therefore, it is difficult to discharge these lint, dirt and bubbles, and the problem of lint adhesion on the clothes after washing is likely to occur. The existing practice is to add spray rinsing after washing. But at this time, the clothes are evenly distributed in the inner tub, and the evenly distributed clothes naturally form a filter for draining water. Increased spray rinsing can only reduce foam, and has little effect on washing thread debris and dirt. In view of this, the present invention is proposed.

Summary of the invention

The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a control method and a washing machine that can effectively improve the lint removal rate of the washing machine.

In order to solve the above technical problems, the first object of the present invention is to propose a washing machine control method, the washing process is finished, the inner tub is controlled to execute the load redistribution phase and the spray phase in sequence, and the load redistribution phase is during the draining process. And/or control the operation of the inner tub to redistribute the load after the drain is completed, and the spray phase is to control the operation of the inner tub and spray after the load redistribution phase ends.

Further, during the draining process, the load redistribution stage is executed, and the inner tub is controlled to run at the first rotation speed in one direction. After the draining is completed, the spraying stage is executed.

Further, before performing the load redistribution stage, it further includes: controlling the inner tub to run unidirectionally or bidirectionally at the second rotational speed during the draining process, and ending the second rotational speed operating state when it is detected that the drainage volume in the inner tub reaches the preset drainage volume;

Preferably, the second rotation speed ≥ the first rotation speed.

Further, the load redistribution phase is executed after the draining is finished, and the inner tub is controlled to run in a single direction at the third speed, and the spray phase is executed after the inner tub is operated for the first predetermined time.

Further, before the load redistribution stage is executed, the method further includes: controlling the inner tub to run unidirectionally or bidirectionally at the second rotation speed during the draining process, and ending the second rotation speed operation state when the water displacement in the inner tub is detected to reach the preset water displacement.

Further, the washing machine includes a water level detection device. After the washing procedure is finished, the drain valve is opened. When the water level monitoring device detects that the water level in the inner tub is less than or equal to the lowest water level, the draining ends.

Further, the size of the second rotation speed is determined according to the height of the water level in the inner bucket, and the second rotation speed is inversely proportional to the height of the water level in the inner bucket.

Further, the size of the first rotation speed and/or the third rotation speed is determined according to the weight of the load in the inner tub, and the second rotation speed and/or the third rotation speed are proportional to the weight of the load in the inner tub.

Further, during the spraying phase, the drain valve is opened, the water inlet valve is opened, and the inner tub is controlled to run at the fourth speed in one direction, and the spraying phase ends when the inner tub runs for a second predetermined time;

Preferably, the first rotation speed ≥ the fourth rotation speed, and the third rotation speed ≥ the fourth rotation speed.

Another object of the present invention is to provide a washing machine including a rotatable inner tub, the washing machine controls the inner tub to sequentially execute the load redistribution phase and the spray phase after the washing process is over, the load redistribution phase is During the draining process or after the draining is completed, the inner tub is controlled to operate to redistribute the load, and the spraying phase is the control of the inner tub to operate for spraying after the load redistribution phase ends.

After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

1. In the present invention, a cavity is formed in the inner barrel by controlling the inner barrel to run at a certain speed and unidirectionally during the draining process or after the draining, and then controlling the inner barrel to run slowly and spraying the inner barrel to remove the foam and thread chips on the load surface , Dirt, etc. flush out and flow out of the inner barrel from the cavity, so as to achieve the purpose of removing thread chips.

2. In the present invention, by controlling the inner tub to run one-way or two-way at a certain speed in the initial stage of drainage, the washing water in the inner tub is discharged from the inner tub through the upper dehydration hole, thereby throwing out floating thread chips, dirt and foam, etc. Achieve the purpose of removing foam, lint, and dirt.

The specific embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

Description of the drawings

The accompanying drawings are used as a part of the present invention to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings in the following description are only some embodiments, and for those of ordinary skill in the art, other drawings can be obtained from these drawings without creative work. In the attached picture:

Figure 1 is a structural diagram of a washing machine according to an embodiment of the present invention;

Figure 2 is a control flow chart of the first embodiment;

Figure 3 is a control flow chart of the second embodiment;

Figure 4 is a control flowchart of the third embodiment;

Fig. 5 is a control flowchart of the fourth embodiment.

It should be noted that these drawings and text descriptions are not intended to limit the scope of the invention in any way, but to explain the concept of the invention for those skilled in the art by referring to specific embodiments.

Detailed ways

In order to make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention. , But not used to limit the scope of the present invention.

In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "inner" and "outer" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description. It does not indicate or imply that the pointed device or element must have a specific orientation, be configured and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

In the description of the present invention, it should be noted that the terms "installed", "connected", "connected", "contacted" and "connected" should be understood in a broad sense, unless explicitly specified and limited otherwise. For example, they may be The fixed connection can also be a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meaning of the above-mentioned terms in the present invention can be understood in specific situations.

As shown in Figure 1, the washing machine of the present invention includes a box body 1, an outer tub 2 arranged in the box body 1, an inner tub 3 arranged in the outer tub 2 and a pulsator 4 arranged in the inner tub 3, wherein the The outer tub 2 is connected to the cabinet 1 of the washing machine through a plurality of booms. The lower part of the outer tub 2 is provided with a driving device 6 that drives the inner tub 3 and the pulsator 4 to rotate; the inner tub 3 is a perforated inner tub 3 or a non-perforated inner tub 3 The inner barrel 3, the inner barrel 3 in this embodiment is a non-porous inner barrel 3. The upper part of the non-porous inner barrel 3 is provided with a dehydration hole 31, which is generally provided in an area above 5/6 of the height of the inner barrel body 32. It is best that the dehydration hole 31 is provided in an area above 9/10 of the height of the inner barrel body 32, which satisfies During washing, the agitated water flow cannot be discharged from the dehydration hole 31. The top opening of the inner tub 3 is provided with a balance ring 33, and the dehydration hole 31 is provided below the balance ring 33. The peripheral wall of the inner tub body 32 at the bottom of the dehydration hole 31 The inner barrel bottom 34 and the inner barrel bottom 34 are all sealed. The lower portion of the inner barrel bottom 34 is provided with an inner barrel shaft 61 passing through the outer barrel bottom 21 to connect with the driving device 6 and driven by the driving device 6 to rotate. The inner barrel shaft 61 and the outer barrel bottom 21 are sealed; 4 is set at the center of the bottom of the inner barrel 3, the pulsator 4, the pulsator shaft 62 is coaxially arranged in the inner barrel shaft 61 through the inner barrel bottom 34, is connected to the drive device 6, and is driven to rotate by the drive device 6, the pulsator 4, the pulsator shaft 62 and The inner barrel bottom 34 is sealed.

The washing machine starts to work and water enters the inner tub 3, and an inflow flow sensor 71 is provided on the water inlet path. During the water intake process, the inflow flow sensor 71 detects the amount of water entering the inner tub 3. After the water in the inner tub 3 reaches the set amount of water, the water is stopped and the washing machine starts washing. Specifically, the driving device 6 drives the pulsator 4 to reciprocate. Driven by the rotation of the pulsator 4, the water and clothes in the inner tub 3 will Following the tumbling, the clothes rub against each other, and the tumbling clothes will repeatedly rub against the side walls of the pulsator 4 and the inner tub 3 to achieve the purpose of washing. The driving device 6 can also be controlled to drive the pulsator 4 and the inner tub 3 to be positive and negative. Rotation or rotation at different speeds in the same direction. Since the existing fully automatic washing machine has a variety of washing methods that drive the inner tub 3 and the pulsator 4 to rotate, the washing method that drives the inner tub 3 and the pulsator 4 to rotate is not the purpose of the improvement of the washing machine of the present invention. No more examples.

As the washing machine is washing clothes, some thread scraps, dirt and bubbles are easy to float on the water. When draining, all the water drains from the inner tub bottom 34 out of the inner tub, and then drains out of the washing machine from the drain pipe 9 through the drain 8. Since evenly distributed clothing naturally forms a filter during drainage, these thread scraps, dirt and foam floating above the water are isolated on the clothing by the clothing. Therefore, it is difficult to discharge these lint, dirt and bubbles, and the problem of lint adhesion on the clothes after washing is likely to occur. Therefore, the present invention proposes the above-mentioned washing machine control method, which controls the inner tub 3 to execute the load redistribution stage and the spraying stage in sequence after the washing program ends. The load redistribution stage is to control the operation of the inner tub 3 during the draining process or after the draining. The load is distributed. At this time, the clothes in the inner tub 3 are distributed around the wall of the inner tub 3, and a cavity is formed in the inner tub 3 to create conditions for the subsequent spraying stage. The spraying stage is to control the inner tub 3 to operate and spray after the load redistribution stage is over. At this time, the sprayed water can wash off the residual thread, dirt and foam on the surface of the clothes and form directly from the center of the inner tub 3 The cavity flows down and is discharged from the inner tub bottom 34 to the outside of the washing machine, thereby avoiding the natural filtering effect of uniformly distributed clothes, and removing lint, dirt and foam more thoroughly.

Specific implementation manner 1: During the draining process, the load redistribution stage is executed, and the inner tub 3 is controlled to run at the first speed in one direction, and after the draining is finished, the spraying stage is executed. As shown in the control flow chart shown in Fig. 2, the load redistribution stage is: after washing, the drain valve is opened, the washing machine starts to drain water, and at the same time, the inner tub 3 is controlled to perform unidirectional operation at a first speed. The size of can be set according to the weight of the load in the inner tub 3, and the first rotation speed is proportional to the weight of the load in the inner tub 3. The load in the inner tub 3 is separated from the center of the inner tub 3 within the magnitude of the first rotation speed, and the center of the inner tub 3 preferably forms a cavity. Loads of different weights correspond to different first speeds, the speed of each load's weight is recorded in the controller, and the speed range is 100-200rpm. During the entire draining process, the inner tub 3 runs one-way at a slower speed. At this time, water flows out of the inner tub 3 from the inner tub bottom 34. Since the clothes are soaked in water, they are in a relatively free state. Different first speeds are set according to the load of the inner tub 3, and the inner tub 3 keeps running in one direction. The clothes can be separated from the center when there is water. The center forms a cavity, which has the following advantages: first, it can improve the uniformity of clothing distribution, and reduce dehydration vibration and noise; second, the clothing can be separated from the center, creating conditions for subsequent efficient spraying.

Further, the washing machine is equipped with a water level monitoring device. When it is detected that the current water level is less than the lowest water level, it is deemed that the water in the inner tub 3 has been drained. The lowest water level is used to determine whether there is water in the inner tub 3 as a detection basis , The lowest water level is stored in the controller, preferably 0≤lowest water level<5mm. The spraying stage is: after the draining is finished, the water inlet valve is opened, the inner tub 3 is controlled to run unidirectionally at the fourth speed, and the water inlet valve is controlled to open for water inlet action, thereby spraying the clothes in the inner tub 3. At this time, the purpose of the one-way operation of the inner tub 3 is to maintain the cavity state in the inner tub 3, and the running direction of the fourth speed is the same as the running direction of the first speed. The fourth rotation speed is slow rotation, and the rotation speed range is 0-200rpm. The fourth rotation speed should be strictly controlled. If the rotation speed is too high, the sprayed water cannot be discharged from the bottom of the inner tub 3, and it loses the ability of spraying to remove thread chips. significance. As the clothes have been distributed around the inner tub 3 during the draining process, a cavity is formed in the center of the inner tub 3. The sprayed water can wash off the residual thread, dirt and foam on the surface of the clothes directly from the cavity formed in the center. The flow is discharged from the bottom of the inner tub 34 to the outside of the washing machine, thereby avoiding the filtering effect naturally formed by uniformly distributed clothes, and removing debris, dirt and foam more thoroughly. After the inner tub 3 is operated at the fourth rotation speed for a second predetermined time, the operation is stopped, and the spraying phase ends. The second predetermined time may be independently set by the user, or directly recorded in the controller of the washing machine and cannot be changed. Preferably, the second predetermined time is 0-3 min.

After the spraying phase is over, the washing machine continues to perform the subsequent rinsing process and spin-drying process until the laundry is completed.

Specific embodiment two: the difference between this embodiment and specific embodiment one is: before the load redistribution phase is executed, it also includes: controlling the inner tub 3 to run in one or two directions at the second rotation speed during the draining process. When the drainage volume reaches the preset drainage volume, the second rotation speed operation state is ended, as shown in the control flowchart of FIG. 2. The second rotation speed is preferably such that the water in the inner tub 3 can be slowly thrown out from the upper dehydration hole 31, and the second rotation speed is set according to the height of the water level in the inner tub 3. The first rotation speed is inversely proportional to the height of the water level in the inner tub 3. The rotation speed corresponding to each water level is recorded in the controller, the rotation speed range is 200-400rpm, and the second rotation speed ≥ the first rotation speed. This solution is also applicable to a washing machine without an outer tub 2 when water is thrown out from the water channel of the washing machine without an outer tub 2. As the water level decreases, in order to throw water out of the upper dehydration hole 31, a larger first rotation speed needs to be provided. If the first rotation speed keeps increasing as the water level decreases, the washing machine will be eccentric, causing the washing machine to shake. The drainage port 8 at the bottom of the washing machine is provided with a drainage flow sensor 70. When the drainage flow sensor 70 detects that the current drainage volume reaches the preset drainage volume, the inner tub ends the second rotation speed operation state. At this time, the inner tub can be controlled to directly enter the one-way rotation at the first rotation speed. Distribution status. The redistribution state is the same as the first embodiment, and will not be repeated here. The preset drainage volume is 15-20% of the inflow volume (that is, the total amount of washing water in the inner tub 3 before drainage). When the second rotation speed operation state is ended, since the first rotation speed ≤ the second rotation speed, the first rotation speed is not enough to throw the water in the inner tub 3 from the upper dehydration hole 31, and the remaining part of the water is discharged from the inner tub bottom 34 3. Therefore, the lint, dirt and foam floating on the water can be removed in the early stage of drainage.

Further, when it is detected that the current water level is less than the lowest water level, it is deemed that the water in the inner tub 3 has been drained, and the spraying phase is entered after the draining. The spraying phase in this embodiment is also the same as that in the first embodiment. Do not repeat it.

Specific implementation manner 3: After the drain is finished, the load redistribution phase is executed, and the inner tub is controlled to run at the third speed in one direction, and the spray phase is executed after the inner tub 3 runs for the first predetermined time. The control flow chart shown in Fig. 3 is specifically as follows: after washing is finished, the drain valve is opened, and when the water level detecting device detects that the current water level is less than or equal to the lowest water level, it is deemed that the water in the inner tub 3 has been drained. The lowest water level is used to determine whether there is water in the inner tub 3 as a detection basis, and the lowest water level is stored in the controller, preferably 0≤lowest water level<5mm. Since the inner tub 3 does not operate during the draining process, and no cavity is formed in the inner tub 3, it is necessary to control the inner tub 3 to operate at the third rotation speed after the draining is completed so that the clothes are distributed on the wall of the inner tub 3 and form in the inner tub 3 After the cavity, to facilitate better subsequent spraying. Specifically, the inner tub 3 is controlled to run in one direction at the third speed. The purpose of the one-way operation is to distribute the clothes around the wall of the inner tub 3 and form a cavity in the inner tub 3. When the inner tub 3 runs for the first predetermined time , The inner tub 3 stops running, the third rotation speed is determined according to the weight of the load in the inner tub 3, and is proportional to the weight of the load in the inner tub 3. The third rotation speed is within the size of the inner tub 3 from the load in the inner tub 3 The center is separated, and the center of the inner barrel 3 should form a cavity. Loads of different weights correspond to different third rotational speeds. The rotational speed of the weight of each load is recorded in the controller. The range of the third rotational speed is 150-400rpm, and the range of the first preset time is 0- 3min,

Further, after the inner tub 3 is operated at the third rotational speed for the first preset time, the spray phase is executed. During the spraying phase, the inner tub 3 is controlled to run in one direction at the fourth speed. At this time, the purpose of the one-way operation is to maintain the state of the cavity in the inner tub 3, and the direction of the fourth speed and the direction of the third speed should be the same. The fourth speed ≤ the third speed. At the same time, the water inlet valve is controlled to open for water inlet action, and the clothes in the inner tub 3 are sprayed. At this time, the purpose of the one-way operation of the inner tub 3 is to maintain the cavity state in the inner tub 3, and the running direction of the fourth speed is the same as the running direction of the third speed. The fourth rotation speed is slow rotation, and the rotation speed range is 0-200rpm. The fourth rotation speed should be strictly controlled. If the rotation speed is too high, the sprayed water cannot be discharged from the bottom of the inner tub 3, and it loses the ability of spraying to remove thread chips. significance. As the clothes have been distributed around the inner tub 3 during the draining process, a cavity is formed in the center of the inner tub 3. The sprayed water can wash off the residual thread, dirt and foam on the surface of the clothes directly from the cavity formed in the center. The flow is discharged from the bottom of the inner tub 34 to the outside of the washing machine, thereby avoiding the filtering effect naturally formed by uniformly distributed clothes, and removing debris, dirt and foam more thoroughly. After the inner tub 3 is operated at the fourth rotation speed for a second predetermined time, the operation is stopped, and the spraying phase ends. The second predetermined time may be independently set by the user, or directly recorded in the controller of the washing machine and cannot be changed. Preferably, the second predetermined time is 0-3 min.

Embodiment 4: The difference between this embodiment and Embodiment 3 is that before the load redistribution phase is executed, it also includes: controlling the inner tub 3 to run at the second speed in one or two directions during the draining process. When the displacement reaches the preset displacement, the second rotation speed operation state is ended, as shown in the control flowchart of FIG. 4. The second rotation speed is preferably such that the water in the inner tub 3 can be slowly thrown out from the upper dehydration hole 31, and the second rotation speed is set according to the height of the water level in the inner tub 3. The first rotation speed is inversely proportional to the height of the water level in the inner tub 3. The speed corresponding to each water level is recorded in the controller, and the speed range is 200-400rpm. This solution is also applicable to a washing machine without an outer tub 2 when water is thrown out from the water channel of the washing machine without an outer tub 2. As the water level decreases, in order to throw water out of the upper dehydration hole 31, a larger first rotation speed needs to be provided. If the first rotation speed keeps increasing as the water level decreases, the washing machine will be eccentric, causing the washing machine to shake. The drainage port 8 at the bottom of the washing machine is provided with a drainage flow sensor 70. When the drainage flow sensor 70 detects that the current drainage volume reaches the preset drainage volume, the inner tub ends the second rotation speed operation state. At this time, the inner tub can be controlled to stop running until the drainage ends or ends at a lower speed. Maintain operation until the end of drainage. The preset drainage volume is 15-20% of the inflow volume (that is, the total amount of washing water in the inner tub 3 before drainage). When the second rotation speed operation state is ended, if the inner tub 3 stops running, the remaining part of the water will be discharged from the inner tub 3 from the inner tub bottom 34, or the inner tub 3 will maintain operation at a lower speed. The water is thrown out from the upper dehydration hole 31, and the remaining part of the water is also discharged from the inner tub 3 from the inner tub bottom 34. Therefore, the lint, dirt and bubbles floating on the water can be removed at the early stage of drainage.

Further, when the water level detection device detects that the current water level is less than or equal to the lowest water level, it is deemed that the water in the inner bucket 3 has been exhausted, and then the load redistribution stage and the spraying stage are executed sequentially. In this embodiment, the load redistribution The stage and the spraying stage are the same as the third embodiment, so they will not be repeated here.

The above are only the preferred embodiments of the present invention, and do not limit the present invention in any form. Although the present invention has been disclosed as above in preferred embodiments, it is not intended to limit the present invention. Any technology familiar with this patent Without departing from the scope of the technical solution of the present invention, the personnel can use the technical content suggested above to make slight changes or modification into equivalent embodiments with equivalent changes, but any content that does not depart from the technical solution of the present invention is based on the technology of the present invention Essentially, any simple modifications, equivalent changes and modifications made to the above embodiments still fall within the scope of the present invention.

Claims

A control method of a washing machine, characterized in that the washing process is completed, the inner tub is controlled to execute the load redistribution stage and the spraying stage in sequence, and the load redistribution stage is to control the operation of the inner tub to the load during the draining process and/or after the draining. Redistribution is carried out, and the spraying phase is after the load redistribution phase is over, the inner barrel is controlled to run and sprayed.
The control method of a washing machine according to claim 1, wherein the load redistribution phase is executed during the draining process, and the inner tub is controlled to run at the first speed in one direction, and after the draining is finished, the spraying phase is executed.
The control method of a washing machine according to claim 2, characterized in that, before the load redistribution stage is executed, the method further comprises: controlling the inner tub to run at the second speed in one or two directions during the draining process, and when detecting the amount of drain in the inner tub When the preset displacement is reached, the second rotation speed operation state is ended;

Preferably, the second rotation speed ≥ the first rotation speed.
The control method of a washing machine according to claim 1, wherein the load redistribution stage is executed after the drain is finished, and the inner tub is controlled to run at a third speed in one direction. When the inner tub is operated for a first predetermined time, the spray stage.
A washing machine control method according to claim 4, characterized in that, before the load redistribution stage is executed, it further comprises: controlling the inner tub to run at the second rotation speed in one or two directions during the draining process, and when it is detected that the amount of drainage in the inner tub reaches When the displacement is preset, the second rotation speed operation state is ended.
The method for controlling a washing machine according to any one of claims 1 to 5, wherein the washing machine includes a water level detection device, and after the washing program is finished, the drain valve is opened, and when the water level monitoring device detects that the water level in the inner tub is less than or When it is equal to the lowest water level, drainage ends.
The control method of a washing machine according to claim 6, wherein the second rotation speed is determined according to the height of the water level in the inner tub, and the second rotation speed is inversely proportional to the height of the water level in the inner tub.
The control method of a washing machine according to claim 6, characterized in that the first rotation speed and/or the third rotation speed are determined according to the weight of the load in the inner tub, and the second rotation speed and/or the third rotation speed and the inner tub The weight of the load is proportional.
The control method of a washing machine according to any one of claims 1-5, wherein during the spraying phase, the drain valve is opened, the water inlet valve is opened, and the inner tub is controlled to run at the fourth speed in one direction. End the spraying phase after the second predetermined time;

Preferably, the first rotation speed ≥ the fourth rotation speed, and the third rotation speed ≥ the fourth rotation speed.
A washing machine, characterized in that it comprises a rotatable inner tub, the washing machine controls the inner tub to execute a load redistribution phase and a spraying phase in sequence after the washing program ends, and the load redistribution phase is during the draining process or After the drain is completed, the inner tub is controlled to operate to redistribute the load, and the spraying phase is to control the inner tub to operate for spraying after the load redistribution phase ends.