Washing machine and control method thereof

Abstract

The invention provides a washing machine and a control method thereof.The washing machine comprises an outer barrel and a tilt angle sensor arranged on the outer barrel and used for obtaining the tilt angle of the outer barrel, a preset water level interval is set in the drainage process after washing is finished, and the water level interval comprises a plurality of monitoring water levels; the inclination angle of the outer barrel is obtained through an inclination angle sensor when the water level sequentially reaches all the monitoring water levels in the drainage process, deviation correction is conducted according to a corresponding deviation correction program matched with the current water level height when eccentricity is judged according to the inclination angle of the outer barrel, drainage continues to be conducted to the next monitoring water level after deviation correction is completed, and the monitoring process is repeated till drainage is completed; by means of the scheme, eccentricity caused by uneven distribution of clothes in the drainage process can be corrected, and the dehydration starting success rate is increased; and the corresponding deviation correction program is matched according to the water level height when eccentricity is found, the problem that deviation correction cannot be effectively achieved through a single deviation correction program is solved, and the deviation correction efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of washing machines, and in particular relates to a washing machine and a control method thereof. Background Art

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

[0003] Washing machines usually have a spin-drying function, but during the spin-drying process, noise is easily generated due to vibration, affecting the user experience, and frequent collisions are also likely to cause damage to the washing machine. For this reason, existing washing machines monitor the degree of eccentricity before or during dehydration, and redistribute the clothes in the barrel when it is determined that a barrel collision is about to occur or has occurred based on the degree of eccentricity, thereby reducing the eccentricity caused by uneven distribution of clothes, thereby reducing the eccentricity during the dehydration process.

[0004] For example, the Chinese utility model patent with application number CN201620833722.X discloses a washing machine with a monitoring device, including a housing, an outer barrel, an inner barrel, multiple cantilevers, a driving device, a control and display panel, and a gravity sensor; the gravity sensor is arranged on a bottom surface outside the outer barrel. Wherein, when the gravity sensor monitors the inner barrel before dehydration and drainage, the inner barrel contains water and clothes, and obtains a first angle value of the inner barrel tilt; and when the inner barrel is monitored after drainage and before dehydration, the inner barrel only contains wet clothes, and obtains a second angle value of the inner barrel tilt. By comparing the difference between the first angle value and the second angle value, it can be known whether the inner barrel is balanced; the above scheme judges whether the clothes are evenly distributed by the change of the angle of the inner barrel tilt before and after drainage, and cannot adjust the clothes distribution state in time during the drainage process, but judges after the drainage is completed. At this time, if it is judged that the clothes are unevenly distributed, water needs to be added again for adjustment, resulting in a waste of water resources, prolonging the washing cycle, and reducing the user experience.

[0005] In view of this, the present invention is proposed. Summary of the invention

[0006] The purpose of the present invention is to provide a washing machine control method to address the problems in the above-mentioned prior art. During the drainage process, the inclination angle of the outer drum at different water levels is monitored, and the eccentricity is judged according to the inclination angle, and the clothes are directly distributed. Through this scheme, the clothes are in a uniformly distributed state after the drainage is completed, thereby improving the success rate of dehydration start-up and avoiding the occurrence of eccentricity.

[0007] In order to achieve the above-mentioned purpose, the present invention provides a washing machine control method, which drains water after washing is completed, monitors the inclination angle of the outer drum at different water levels during the drainage process, and when eccentricity is determined according to the inclination angle obtained at any water level, corrects the deviation by matching the corresponding correction program with the water level.

[0008] In the above scheme, the inclination angle of the outer drum is monitored in real time during the drainage process, and when eccentricity is determined according to the inclination angle, the corresponding correction program is corrected according to the current water level height. This ensures that the clothes are evenly distributed after drainage, improves the success rate of dehydration start-up, and does not cause repeated dehydration start-up due to uneven distribution of clothes, shortens the washing cycle, and improves the user experience.

[0009] Further, it includes a preset water level interval, and at least one monitoring water level is preset in the preset water level interval;

[0010] When the current water level reaches each monitoring water level in turn, drainage is suspended, the inclination angle of the outer barrel at the current water level is obtained, and eccentricity is determined based on the inclination angle of the outer barrel. Correction is performed based on the corresponding correction program matched with the current water level, and drainage is continued after the correction program is completed.

[0011] Due to the different amounts of residual water in the outer drum, the impeller rotation speed and stirring intensity for redistributing clothes are also different. The above scheme sets a preset water level interval during the drainage process, and sets a number of monitoring water levels within the water level interval. The inclination of the outer drum is monitored at each monitoring water level, and the corresponding correction program is matched according to the water level when eccentricity occurs, so that the correction program can be adapted to the residual water amount, thereby ensuring the uniform distribution of clothes and improving the efficiency of clothing distribution.

[0012] Furthermore, the preset water level interval includes a first water level threshold;

[0013] When the current water level is higher than the first water level threshold, it is determined that eccentricity occurs, and the eccentricity correction program is matched;

[0014] When the current water level reaches or is lower than the first water level threshold, it is determined that eccentricity occurs, and the eccentricity correction program is matched.

[0015] The above scheme distinguishes the water level through the first water level threshold, and then matches different correction programs according to different areas to achieve uniform distribution of clothes.

[0016] Furthermore, the upper eccentricity correction procedure is to control the impeller to rotate at a preset first speed;

[0017] The lower eccentricity correction procedure is to control the impeller to rotate at a preset second speed;

[0018] The preset first rotation speed is greater than the preset second rotation speed.

[0019] The more water there is in the outer drum, the higher the speed required for the impeller to stir the water. At the same speed, as the water level decreases, the stirring effect becomes stronger. However, when there is less water, the high speed can distribute the laundry on the one hand, but it is easy to scratch the clothes and cause damage to the clothes on the other hand, and the clothes may also become tangled due to the scratches. Therefore, the second speed is set to be lower than the first speed, which fully takes into account the distribution requirements of clothes under different water levels. While improving the clothing distribution efficiency, it can fully protect the clothes from damage caused by the distribution process.

[0020] Furthermore, the preset water level interval also includes a second water level threshold, which is the maximum water level value in the preset water level interval, and no judgment is performed when the current water level is higher than the second water level threshold;

[0021] When the water level in the outer drum is high, even if eccentricity is detected and the clothes are redistributed, due to the high water level, the process from completion of distribution to fixation of the clothing distribution state will still be affected by water, resulting in the actual distribution state not being consistent with expectations. Therefore, there is no need to monitor when the water level is high. After draining for a period of time, monitoring and judgment can be performed after the water level drops. This can ensure that the clothing distribution state is consistent with the expected state, reduce the energy consumption of the washing machine, and improve washing efficiency.

[0022] Preferably, the water level height corresponding to the second water level threshold is half of the washing water level height.

[0023] Furthermore, the water level height corresponding to the first water level threshold is 0.

[0024] In the above scheme, the water level height corresponding to the first water level threshold is 0, that is, as long as the water is not completely drained, the upper eccentricity correction procedure is adopted when it is judged that eccentricity occurs, and only when the water is completely drained, the lower eccentricity correction procedure is adopted when it is judged that eccentricity occurs; this is because as long as the water is not completely drained, the clothes can be more easily evenly distributed under the lubrication of water, so the first speed can improve the distribution efficiency; and after the water is completely drained, the clothes are directly redistributed by the stirring of the impeller. At this time, if the speed is too fast, it will directly cause damage to the clothes, and high-speed stirring is more likely to entangle the clothes. Therefore, the first water level threshold is set to 0, which fully meets the distribution needs of clothes under different water levels.

[0025] Furthermore, after the deviation correction is completed, the inclination angle of the outer barrel is monitored, and if eccentricity still occurs based on the inclination angle of the outer barrel, deviation correction is performed again until the eccentricity is corrected.

[0026] The above scheme re-monitors the inclination of the outer tub after completing the deviation correction, and performs deviation correction again when it is determined based on the inclination of the outer tub that the clothes are still not evenly distributed, thereby fully ensuring the uniform distribution of the clothes after drainage is completed.

[0027] Furthermore, the number of deviation corrections is counted, and if the number of deviation corrections is greater than a preset threshold, an alarm is issued to the user;

[0028] After the correction is completed, the eccentricity is judged to be corrected according to the inclination angle of the outer barrel, and the count is reset.

[0029] In the above scheme, it is taken into account that the clothes may be in a state where they cannot be evenly distributed due to various reasons. At this time, even if the correction is performed multiple times, the distribution state of the clothes cannot be changed. Instead, the operating power consumption of the washing machine is increased, which is not conducive to energy saving and consumption reduction. By counting the number of corrections, an alarm is issued to the user when the clothes cannot be evenly distributed after multiple corrections, prompting the user to check the distribution state of the clothes in time. On the one hand, the energy saving effect of the washing machine is improved, and at the same time, the user can be prompted to check the status of the clothes in time to avoid damage to the clothes due to repeated corrections when the clothes are stuck or in other states where they cannot be evenly distributed, thereby improving the user's experience.

[0030] Furthermore, a three-dimensional rectangular coordinate system is established with the outer barrel axis as the coordinate axis, the offset degree of the outer barrel in the three coordinate axis directions is obtained, and the offset degree of the outer barrel in the three coordinate axis directions is processed to obtain the inclination angle of the outer barrel.

[0031] A second aspect of the present invention provides a washing machine using the above control method, comprising:

[0032] outer barrel;

[0033] The inclination sensor is used to monitor the inclination in the rectangular coordinate system and is fixed on the outer barrel;

[0034] The washing machine has at least two inclination sensors, which are respectively arranged at the bottom and the top of the outer tub, and the planes where the coordinate systems of the two inclination sensors are located are perpendicular to each other.

[0035] In the above scheme, two inclination sensors are respectively arranged at the top and bottom of the outer barrel, and can obtain the inclination of the top and bottom of the outer barrel respectively. The planes where the rectangular coordinate systems of the two inclination sensors are located are perpendicular to each other, that is, one of the two inclination sensors obtains the inclination of the xy plane, and the other obtains the inclination of the xz or yz plane. The data obtained by the two inclination sensors are summarized and processed to obtain the inclination of the outer barrel, so that the actual tilt state of the outer barrel can be known more accurately.

[0036] The beneficial effects of the present invention are:

[0037] 1. During the drainage process, the inclination angle of the outer drum at different water levels is monitored in turn. When eccentricity is determined based on the inclination angle of the outer drum, the corresponding correction program is matched according to the current water level. The influence of different water levels on the adjustment of the distribution state of clothes is fully considered to ensure the uniform distribution of clothes. The clothes enter the dehydration stage in a uniformly distributed state, avoiding the increase of dehydration time due to uneven distribution of clothes and improving the washing efficiency of the washing machine.

[0038] 2. The preset water level interval includes a first water level threshold and a second water level threshold. The water level height corresponding to the first water level threshold is 0, that is, corresponding correction programs are matched for the two situations where the water is completely drained and not completely drained, respectively, which can achieve uniform distribution of clothes when the water is completely drained and not completely drained; the water level height corresponding to the second water level threshold is half of the washing water level height, which improves the energy-saving effect of the washing machine.

[0039] 3. Monitor the inclination angle of the outer barrel corresponding to different water levels in turn and suspend drainage. Correct the deviation when eccentricity is detected. After the deviation correction is completed, obtain the inclination angle of the outer barrel again and continue drainage until the eccentricity is eliminated. This ensures timely discovery and correction of eccentricity, avoids small eccentricity that cannot be corrected in time, resulting in further increase of eccentricity as drainage proceeds, and is conducive to the full elimination of eccentricity. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 The figure is a simplified flow chart of the washing machine control method of the present invention.

[0041] Figure 2 This is a first flow chart of the washing machine control method of the present invention.

[0042] Figure 3 This is a second flow chart of the washing machine control method of the present invention.

[0043] Figure 4 This is a third flow chart of the washing machine control method of the present invention. DETAILED DESCRIPTION

[0044] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that the following embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0045] In the description of the present invention, unless otherwise clearly specified and limited, the terms "setting" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0046] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0047] The present invention provides a washing machine control method, such as Figures 1 to 4 As shown, drainage is performed after washing is completed, and during the drainage process, the inclination angle of the outer barrel at different water levels is monitored. When eccentricity is determined based on the inclination angle obtained at any water level, correction is performed based on the water level matching the corresponding correction program.

[0048] In the above scheme, the corresponding correction program is matched according to the water level when eccentricity occurs, so that the correction program can be adapted to the current water level, thereby achieving uniform distribution of clothes and improving the correction efficiency.

[0049] The present invention is further described in detail below with reference to specific embodiments.

[0050] Embodiment 1

[0051] As an embodiment of the present invention, this embodiment provides a washing machine control method, in which a water level interval is preset during the drainage process, and a first water level threshold is preset in the water level interval, such as Figure 1 As shown, after draining water to the preset water level interval, the inclination angle of the outer barrel corresponding to the current water level is obtained. When eccentricity is determined based on the inclination angle of the outer barrel, the current water level is compared with the first water level threshold, and the corresponding correction program is matched according to the size relationship between the two.

[0052] It should be noted here that the process of judging whether eccentricity occurs based on the inclination angle of the outer barrel is to obtain the inclination angle of the outer barrel, and then compare the inclination angle of the outer barrel with a preset inclination angle threshold. If the inclination angle of the outer barrel is greater than the inclination angle threshold, it is judged that eccentricity occurs. It should be noted that in the process of judging the occurrence of eccentricity based on the inclination angle, the direction of the tilt of the outer barrel is usually not considered, that is, if the inclination angle generated in any direction is greater than the preset inclination angle, it is judged that eccentricity occurs.

[0053] Specifically, there is a preset water level interval during the drainage process, and there is at least one monitoring water level within the preset water level interval. When the current water level reaches the monitoring water level, the drainage is suspended, or the inclination angle of the outer barrel is missing at the current water level, and whether it is eccentric is determined according to the inclination angle of the outer barrel. If it is determined to be eccentric, a suitable correction program is matched according to the current water level, and the clothes are redistributed according to the correction program. After the correction program is completed, the drainage is continued, and the distribution state of the clothes is adjusted during the drainage process, so that the clothes can start to be dehydrated in a uniformly distributed state after the drainage is completed, thereby improving the success rate of dehydration start.

[0054] When there are multiple different monitoring water levels in the preset water level interval, multiple monitoring water levels are passed in sequence during the drainage process. When each monitoring water level is reached in sequence, the drainage is suspended. The inclination angle of the outer barrel corresponding to each monitoring water level is monitored, and when eccentricity is determined according to the inclination angle of the outer barrel, the corresponding correction program is matched to correct the deviation, and then the water is continued to be drained to the next monitoring water level. The above monitoring process is repeated until the water is drained. The above method can detect and correct the eccentricity in time after it occurs, so as to avoid small eccentricity that cannot be handled in time and becomes large eccentricity. Compared with large eccentricity, small eccentricity is easier to correct, and the action required for correction is also smaller, which will not cause damage to clothes.

[0055] Furthermore, after the correction is performed according to the correction procedure, the drainage is not continued directly, but the inclination of the outer tub is monitored again. If the eccentricity is still present according to the inclination of the outer tub, the correction is performed again, and the above process is repeated until it is confirmed that the eccentricity is corrected and then the drainage is continued; the correction result is confirmed by the above scheme, which ensures the correction effect and can better adjust the distribution state of the clothes during the drainage process.

[0056] If the eccentricity is still present after multiple corrections, an alarm will be issued to the user. At this time, the eccentricity of the clothes may not be corrected by the correction program of the washing machine. If the clothes are directly dehydrated, there is a high probability that they will hit the drum due to eccentricity. Therefore, if Figure 3 As shown, while the deviation correction is being performed according to the matching deviation correction program, the number of correction times is also counted. When the number of deviation corrections reaches a preset threshold, an alarm is issued to the user and drainage is stopped; drainage continues after the user processes and confirms; if the number of deviation corrections does not reach the preset threshold and the eccentricity has been corrected, drainage continues and the count is reset.

[0057] Alternatively, when the number of corrections reaches a preset threshold, water may be added to the washing machine and a correction procedure may be performed therein. If the eccentricity correction is still not completed, an alarm may be issued to the user.

[0058] The method of issuing an alarm to the user is an existing method in the field, for example, the user is prompted by the machine making a sound or emitting light or a combination of the two, or the user is prompted by a mobile terminal or cloud connected to the washing machine. The specific prompting method is a conventional technical means in the field and is not described here. The routine changes made by technical personnel in this field on the basis of knowing the technical principles of the present invention also fall within the protection scope of the present invention.

[0059] Furthermore, before starting washing, you can also determine whether the clothes are laid flat by obtaining the inclination angle of the outer drum, and execute the shaking program when eccentricity is determined according to the inclination angle of the outer drum, and then fill the water to start the washing program, thereby ensuring the smooth operation of the washing machine during the washing process.

[0060] During this process, you can also monitor the inclination angle of the outer drum again after the shaking program is completed. Only start letting in water after judging that the clothes are flat and not eccentric based on the inclination angle of the outer drum. Otherwise, execute the shaking program again to ensure the even distribution of the clothes and avoid the impact of eccentricity on the washing effect.

[0061] Embodiment 2

[0062] As another embodiment of the present invention, this embodiment further makes the following improvements on the basis of the first embodiment.

[0063] In this embodiment, the preset water level interval includes a first water level threshold value, and the current water level is compared with the preset first water level threshold value when eccentricity is determined, and different correction programs are matched according to the comparison result.

[0064] As an implementation mode of this embodiment, when the current water level is greater than the preset first water level threshold, the upper eccentricity correction program is matched; if the current water level is less than or equal to the preset first water level threshold, the lower eccentricity correction program is matched, that is, different correction programs are matched according to the remaining water volume, so that the redistribution of clothes can be fully realized under different residual water volumes; it should be noted here that the difference between the upper eccentricity correction program and the lower eccentricity correction program may be different correction speeds, or different parameters such as correction methods and correction durations.

[0065] Take two monitoring water levels as an example, Figure 2As shown, the first monitored water level is greater than the first water level threshold, and the second monitored water level is less than or equal to the first water level threshold. After draining to the first monitored water level, the drainage is suspended, the inclination angle of the outer barrel is obtained, and when it is judged that eccentricity occurs, since the first monitored water level is greater than the first water level threshold, the eccentricity correction program is matched, and the eccentricity is corrected by running the eccentricity correction program. After the correction is completed or when it is judged that no eccentricity occurs, the drainage is continued to the second monitored water level and then the drainage is suspended, the inclination angle of the outer barrel under the second monitoring water level is obtained, and according to the inclination angle of the outer barrel, if eccentricity occurs, it is judged that eccentricity occurs, then the eccentricity correction program is matched, after the correction is completed or when it is judged that no eccentricity occurs, the drainage is continued until all the water in the outer barrel is drained.

[0066] In the above scheme, the correction speed of the upper eccentricity correction program is greater than the correction speed of the lower eccentricity correction program; the more water there is in the outer barrel, the higher the speed required for the impeller to stir the water. At the same speed, as the water level decreases, the stirring effect becomes stronger; but when there is less water, the high speed can distribute the laundry on the one hand, but it is easy to scratch the clothes and cause damage to the clothes on the other hand, and the clothes may also become tangled due to the scratches. Therefore, the second speed is set to be lower than the first speed, which fully takes into account the distribution requirements of the clothes under different water levels. While improving the efficiency of clothing distribution, it can fully protect the clothes from damage caused by the distribution process.

[0067] Furthermore, the water level height corresponding to the first water level threshold is 0, that is, before the water is completely drained, eccentricity is determined based on the inclination of the outer barrel, and the upper eccentricity correction program is matched; when the water is drained, eccentricity is determined based on the inclination of the outer barrel, the lower eccentricity correction program is matched; this is because as long as the water is not completely drained, the clothes can be more easily evenly distributed under the lubrication of water, so the first speed can improve the distribution efficiency; and after the water is completely drained, the clothes are directly redistributed by the stirring of the impeller. At this time, if the speed is too fast, it will directly cause damage to the clothes, and high-speed stirring will make the clothes more likely to tangle, so the first water level threshold is set to 0, which fully meets the distribution requirements of clothes under different water levels, while taking into account the difficulty of clothes distribution under different situations; at this time, the speed of the upper eccentricity correction program can be adjusted to be higher than the speed of the lower eccentricity correction program, so that the clothes can be evenly distributed while protecting the clothes, thereby avoiding damage to the clothes.

[0068] Further, such as Figure 4As shown, the preset water level interval also includes a second water level threshold, which is the maximum water level value in the preset water level interval. No judgment is made when the current water level is higher than the second water level threshold. This is because when the water level in the outer tub is high, even if eccentricity is detected and the clothes are redistributed, due to the high water level, the process from completion of distribution to fixation of the distribution state of the clothes will still be affected by water, resulting in the actual distribution state being inconsistent with expectations. Therefore, there is no need to monitor when the water level is high. After draining for a period of time, monitoring and judgment can be performed after the water level drops, which can ensure that the distribution state of the clothes is consistent with the expected state, reduce the energy consumption of the washing machine, and improve washing efficiency.

[0069] In order to ensure the clothing distribution effect, in this embodiment, the water level height corresponding to the second water level threshold is half of the washing water level.

[0070] The present invention further provides a washing machine, which adopts the control method described in the above embodiment, and the details are as follows.

[0071] Embodiment 3

[0072] As another embodiment of the present invention, this embodiment provides a washing machine, which adopts the control method as described in Example 2. The washing machine includes an outer barrel, an inclination sensor arranged on the outer barrel, and a control unit. The inclination sensor is communicatively connected with the control unit.

[0073] During the drainage process, the inclination sensor obtains the inclination angle of the outer barrel under different monitored water levels and sends it to the control unit. The control unit determines whether it is eccentric based on the inclination angle of the outer barrel, and matches the corresponding correction program to correct the eccentricity when eccentricity occurs. Specifically, the inclination sensor obtains the inclination angle of the outer barrel in six directions, and comprehensively obtains the inclination angle of the outer barrel by combining the sizes of the inclination angles in the six directions.

[0074] Furthermore, the washing machine has at least two inclination sensors, which are respectively arranged at the bottom and the top of the outer tub, and the planes where the coordinate systems of the two inclination sensors are located are perpendicular to each other.

[0075] In the above scheme, two inclination sensors are respectively arranged at the top and bottom of the outer barrel, and can obtain the inclination of the top and bottom of the outer barrel respectively. The planes where the rectangular coordinate systems of the two inclination sensors are located are perpendicular to each other, that is, one of the two inclination sensors obtains the inclination of the xy plane, and the other obtains the inclination of the xz or yz plane. The data obtained by the two inclination sensors are summarized and processed to obtain the inclination of the outer barrel, so that the actual tilt state of the outer barrel can be known more accurately.

[0076] The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation scheme in the above embodiment can also be further combined or replaced. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of the solution of the present invention.

Claims

1. A washing machine control method, characterized in that: After washing, the water is drained. During the drainage process, the inclination angle of the outer barrel at different water levels is monitored. When eccentricity is determined based on the inclination angle of the outer barrel obtained at any water level, the corresponding correction program is matched to the water level to perform correction.

2. The washing machine control method according to claim 1, characterized in that: It includes a preset water level interval, wherein at least one monitoring water level is preset in the preset water level interval; When the current water level reaches each monitoring water level in turn, drainage is suspended, the inclination angle of the outer barrel at the current water level is obtained, and eccentricity is determined based on the inclination angle of the outer barrel. Correction is performed based on the corresponding correction program matched with the current water level, and drainage is continued after the correction program is completed.

3. The washing machine control method according to claim 2, characterized in that: The preset water level interval includes a first water level threshold; When the current water level is higher than the first water level threshold, it is determined that eccentricity occurs, and the eccentricity correction program is matched; When the current water level reaches or is lower than the first water level threshold, it is determined that eccentricity occurs, and the eccentricity correction program is matched.

4. The washing machine control method according to claim 3, wherein the upper eccentricity correction procedure is to control the pulsator to rotate at a preset first speed; The lower eccentricity correction procedure is to control the impeller to rotate at a preset second speed; The preset first rotation speed is greater than the preset second rotation speed.

5. The washing machine control method according to claim 3, characterized in that: The preset water level interval also includes a second water level threshold value, which is the maximum water level value in the preset water level interval. When the current water level is higher than the second water level threshold value, no judgment is performed; Preferably, the water level height corresponding to the second water level threshold is half of the washing water level height.

6. The washing machine control method according to claim 5, characterized in that: The water level height corresponding to the first water level threshold is 0.

7. The washing machine control method according to claim 1, characterized in that: After the correction is completed, the inclination angle of the outer barrel is monitored. If eccentricity still occurs based on the inclination angle of the outer barrel, correction is performed again until the eccentricity is corrected.

8. The washing machine control method according to claim 7, characterized in that: Count the number of deviation corrections, and if the number of deviation corrections is greater than a preset threshold, an alarm is issued to the user; After the correction is completed, the eccentricity is judged to be corrected according to the inclination angle of the outer barrel, and the count is reset.

9. The washing machine control method according to any one of claims 1 to 8, characterized in that: A three-dimensional rectangular coordinate system is established with the outer barrel axis as the coordinate axis, the offset degree of the outer barrel in the directions of the three coordinate axes is obtained, and the offset degree of the outer barrel in the directions of the three coordinate axes is processed to obtain the inclination angle of the outer barrel.

10. A washing machine using the control method according to any one of claims 1 to 9, characterized in that: include, outer barrel; The inclination sensor is used to monitor the inclination in the rectangular coordinate system and is fixed on the outer barrel; The washing machine has at least two inclination sensors, which are respectively arranged at the bottom and the top of the outer tub, and the planes where the coordinate systems of the two inclination sensors are located are perpendicular to each other.

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