CN117385588A - Dewatering control method and device of washing machine and washing machine - Google Patents

Abstract

The disclosure relates to the technical field of washing machines, and in particular relates to a dehydration control method and device of a washing machine and the washing machine. The dewatering control method of the washing machine comprises the following steps: controlling the washing machine to execute a dehydration program; circularly executing a first preset control process until the dehydration procedure is finished; the first preset control process comprises the following steps: the method comprises the steps of obtaining a current value of a motor in a stage of maintaining stable rotation speed after the rotation speed of the motor in the washing machine is changed; and controlling the rotating speed of the motor according to the current value of the motor. According to the technical scheme, the dehydration power consumption and the dehydration vibration degree of the washing machine are reduced, and the dehydration effect of the washing machine is optimized, so that the problems that a motor of the washing machine is easy to damage and a washing barrel is easy to explode are avoided, and the use experience of a user is improved.

Description

Dewatering control method and device of washing machine and washing machine

Technical Field

The disclosure relates to the technical field of washing machines, and in particular relates to a dehydration control method and device of a washing machine and the washing machine.

Background

The existing dehydration control method of a washing machine, such as a drum washing machine, is to directly control the washing machine to perform a dehydration process according to a designated preset curve during a dehydration stage.

However, when the washing machine starts to spin, the eccentricity of the laundry in the washing machine changes when the washing machine is rotated from low speed to high speed, and the higher spin speed causes water ring formation between the inner and outer tub of the washing machine, resulting in problems of high spin power, high spin vibration, no spin speed, etc. of the washing machine, and further resulting in problems of poor spin effect of the washing machine and easy damage of the motor, and even explosion of the washing tub when serious.

Disclosure of Invention

In order to solve the technical problems, the present disclosure provides a dehydration control method and device for a washing machine, and a washing machine, which reduce dehydration power consumption and dehydration vibration degree of the washing machine, optimize dehydration effect of the washing machine, thereby avoiding the problems of easy damage of a motor of the washing machine and easy explosion of a washing barrel, and being beneficial to improving use experience of users.

In a first aspect, an embodiment of the present disclosure provides a dehydration control method of a washing machine, including:

controlling the washing machine to execute a dehydration program;

circularly executing a first preset control process until the dehydration procedure is finished;

the first preset control process comprises the following steps:

the method comprises the steps of obtaining a current value of a motor in the washing machine at a stage of maintaining stable rotation speed after the rotation speed of the motor is changed;

and controlling the rotating speed of the motor according to the current value of the motor.

In some embodiments, the controlling the rotational speed of the motor according to the current value of the motor includes:

when the current value of the motor is smaller than or equal to the preset safe dehydration current corresponding to the rotation speed stabilization stage, controlling the rotation speed of the motor according to a preset rotation speed change curve;

when the current value of the motor is larger than the preset safe dehydration current, the rotating speed of the motor is controlled to be reduced by a preset gear, and then the rotating speed is maintained stable.

In some embodiments, before the controlling the rotation speed of the motor according to the current value of the motor, the dehydration control method of the washing machine further includes:

acquiring a weight value of clothes in the washing machine;

dynamically adjusting the preset safe dehydration current corresponding to the rotation speed stabilization stage according to the weight value of the clothes; wherein the preset safe dehydrating current is in direct proportion to the weight value of the clothes.

In some embodiments, before the controlling the washing machine to perform the dehydration process, the method further includes:

and circularly executing a second preset control process until the eccentricity value of the clothes in the washing machine is smaller than or equal to the maximum eccentricity value of the preset rotating speed.

In some embodiments, the second preset control procedure includes:

controlling the washing machine to shake and scatter clothes in the washing machine;

controlling the motor to rotate at a preset eccentric sensing rotating speed and acquiring an eccentric value of the clothes;

and controlling the working state of the washing machine according to the eccentric value of the clothes.

In some embodiments, the controlling the operating state of the washing machine according to the eccentricity value of the laundry includes:

when the eccentricity value of the clothes is smaller than or equal to the maximum eccentricity value of the preset rotating speed, controlling the washing machine to execute the dewatering program;

when the eccentric value of the clothes is larger than the maximum eccentric value of the preset rotating speed, the washing machine is controlled to shake and scatter the clothes.

In some embodiments, before the controlling the washing machine to perform the dehydration process, the method further includes:

acquiring the cycle execution times of the second preset control process;

when the cycle execution times exceeds the preset times, acquiring the safe dehydration rotating speed corresponding to the current eccentricity value of the clothes;

and controlling a motor in the washing machine to execute the dehydration procedure at the safe dehydration rotation speed.

In some embodiments, the controlling the rotational speed of the motor according to the current value of the motor includes:

and when the current value of the motor in the first gear rotating speed stabilization stage is larger than the preset safe dehydration current corresponding to the first gear rotating speed stabilization stage, the control loop executes the second preset control process.

In a second aspect, embodiments of the present disclosure also provide a dehydration control apparatus of a washing machine, including:

the dehydration control module is used for controlling the washing machine to execute a dehydration program;

the circulation execution module is used for circularly executing a first preset control process until the dehydration program is ended;

the first preset control process comprises the following steps:

the method comprises the steps of obtaining a current value of a motor in the washing machine at a stage of maintaining stable rotation speed after the rotation speed of the motor is changed;

and controlling the rotating speed of the motor according to the current value of the motor.

In a third aspect, embodiments of the present disclosure also provide a washing machine, including:

a processor and a memory, the processor executing the steps of the dehydration control method of any one of the washing machines as provided in the first aspect by calling a program or instructions stored in the memory.

Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:

the dewatering control method of the washing machine provided by the embodiment of the disclosure comprises the steps of controlling the washing machine to enter a dewatering program, and circularly executing a first preset control process until the dewatering program is finished; the first preset control process comprises the following steps: the method comprises the steps of obtaining a current value of a motor in the washing machine at a stage of maintaining stable rotation speed after the rotation speed of the motor is changed; and controlling the rotating speed of the motor according to the current value of the motor. Therefore, in the dewatering stage, after the rotation speed change of the motor in the washing machine is detected in real time, the current value of the motor in the stage with stable rotation speed is maintained, and the dewatering rotation speed of the washing machine is controlled according to the current value of the motor, so that the rotation speed of the washing machine is adjusted by utilizing the maximum current threshold value of the motor set corresponding to different dewatering step stages, the washing machine is controlled to dewater at the optimal dewatering rotation speed, the dewatering power consumption and the dewatering vibration degree of the washing machine are reduced, the dewatering effect of the washing machine is optimized, the problems that the motor of the washing machine is easy to damage and the washing barrel is easy to explode are avoided, and the use experience of a user is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.

In order to more clearly illustrate the embodiments of the present disclosure or the solutions in the prior art, the drawings that are required for the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.

Fig. 1 is a schematic flow chart of a dehydration control method of a washing machine according to an embodiment of the disclosure;

fig. 2 is a schematic diagram of a preset rotation speed variation curve of a motor of a washing machine according to an embodiment of the present disclosure;

FIG. 3 is a schematic diagram of a motor dehydration control curve of a washing machine according to an embodiment of the present disclosure;

fig. 4 is a schematic flow chart of a dehydration control method of a washing machine according to an embodiment of the disclosure;

fig. 5 is a schematic structural view of a dehydration control apparatus of a washing machine according to an embodiment of the present disclosure;

fig. 6 is a schematic structural view of a washing machine according to an embodiment of the present disclosure.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, a further description of aspects of the present disclosure will be provided below. It should be noted that, without conflict, the embodiments of the present disclosure and features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced otherwise than as described herein; it will be apparent that the embodiments in the specification are only some, but not all, embodiments of the disclosure.

The existing dehydration control method of a washing machine, such as a drum washing machine, is to directly control the washing machine to perform a dehydration process according to a designated preset curve during a dehydration stage. However, when the washing machine starts to spin, the eccentricity of the laundry in the washing machine changes when the washing machine is rotated from low speed to high speed, and the higher spin speed causes water ring formation between the inner and outer tub of the washing machine, resulting in problems of high spin power, high spin vibration, no spin speed, etc. of the washing machine, and further resulting in problems of poor spin effect of the washing machine and easy damage of the motor, and even explosion of the washing tub when serious.

According to the embodiment of the disclosure, after the rotation speed change of the motor in the washing machine is detected in real time in the dehydration stage, the current value of the motor in the stage with stable rotation speed is maintained, and the dehydration rotation speed of the washing machine is controlled according to the current value of the motor, so that the rotation speed of the washing machine is adjusted by utilizing the maximum current threshold value of the motor corresponding to different dehydration step stages, the washing machine is controlled to carry out dehydration at the optimal dehydration rotation speed, the dehydration power consumption and the dehydration vibration degree of the washing machine are reduced, the dehydration effect of the washing machine is optimized, the problems that the motor of the washing machine is easy to damage and the washing barrel is easy to explode are avoided, and the use experience of a user is improved.

The following describes an exemplary method and apparatus for controlling dehydration of a washing machine and a washing machine according to embodiments of the present disclosure with reference to the accompanying drawings.

Fig. 1 is a schematic flow chart of a dehydration control method of a washing machine according to an embodiment of the disclosure. The method is suitable for application scenes in which the washing machine needs to be controlled. The method may be performed by a dehydration control apparatus of a washing machine provided by an embodiment of the present disclosure, for example, may be performed by a controller in the washing machine, and the dehydration control apparatus of the washing machine may be implemented in a software and/or hardware manner. As shown in fig. 1, the method comprises the steps of:

s101, controlling the washing machine to execute a dehydration program.

In particular, when the laundry in the washing machine needs to be dehydrated, the washing machine may be controlled to perform a dehydrating function to achieve dehydration of the laundry in the washing machine. Fig. 2 is a schematic diagram of a preset rotation speed variation curve of a motor of a washing machine according to an embodiment of the present disclosure, wherein an abscissa in fig. 2 represents a dehydration time T, a unit is seconds, an ordinate is a rotation speed N of the motor of the washing machine, a unit is rpm, and fig. 2 is a rotation speed variation rule of the motor followed by the motor of the washing machine when the washing machine is normally dehydrated. As shown in fig. 2, when the washing machine is normally dewatering, the rotation speed of the motor is continuously increased according to the set acceleration at different stages, that is, the rotation speed of the motor is continuously increased by the rotation speed gear, and the rotation speed of the motor is maintained unchanged at a stable stage of a preset time when the rotation speed of the motor is increased once.

S102, circularly executing a first preset control process until the dehydration procedure is finished.

The first preset control process comprises the following steps: the method comprises the steps of obtaining a current value of a motor in a stage of maintaining stable rotation speed after the rotation speed of the motor in the washing machine is changed; and controlling the rotating speed of the motor according to the current value of the motor.

Specifically, as shown in fig. 2, after each change of the rotation speed of the motor in the washing machine, a rotation speed stabilizing stage, i.e., a rotation speed maintaining stage, is corresponding to one rotation speed stabilizing stage, and fig. 2 exemplarily shows seven stages of maintaining the rotation speed stabilizing of the motor in the dehydration stage, and the working current of the motor is detected in each stage of maintaining the rotation speed stabilizing of the motor. Specifically, there is a correspondence between the current of the motor and the water ring formed between the inner and outer tub of the washing machine, and the degree of eccentricity of the laundry in the washing machine during the dehydration stage. When the eccentricity of clothes in the washing machine is overlarge, or a water ring is formed between the inner barrel and the outer barrel of the washing machine, the current of the motor is larger than the corresponding motor current under the condition of no eccentricity or water ring, so that whether the eccentricity of clothes in the washing machine is overlarge or not in the current dehydration stage or whether the water ring is formed between the inner barrel and the outer barrel of the washing machine or not can be judged according to the current of the motor, the problems of high dehydration power, large dehydration vibration, no removal on the dehydration rotating speed, poor dehydration effect, easy damage of the motor and the like of the washing machine are caused, and the rotating speed of the motor is controlled according to the current of the motor so as to optimize the dehydration performance of the washing machine.

Therefore, in the dewatering stage, after the rotation speed change of the motor in the washing machine is detected in real time, the current value of the motor in the stage with stable rotation speed is maintained, the dewatering rotation speed of the washing machine is controlled according to the current value of the motor, the rotation speed of the washing machine is adjusted by utilizing the maximum current threshold value of the motor set corresponding to different dewatering step stages, the washing machine is controlled to dewater at the optimal dewatering rotation speed, the problem that the eccentricity or the water ring influences the dewatering performance of the washing machine is avoided, the dewatering power consumption and the dewatering vibration degree of the washing machine are reduced, the dewatering effect of the washing machine is optimized, the problems that the motor of the washing machine is easy to damage and the washing barrel is easy to explode are avoided, and the use experience of a user is improved.

It should be noted that, when the rotation speed of the motor accelerates according to the set acceleration, the current value of the motor is larger, when the rotation speed of the motor is switched from the changing state to the stable state, the current value of the motor has a phenomenon of falling back, and the current value of the motor can reach the real stable state only after a period of time, so that the current value of the motor can be detected and obtained at intervals of preset time after the rotation speed of the motor maintains the stable state, for example, but not limited to, after 10 seconds, and the accuracy of detecting the current value of the motor is improved.

In some embodiments, controlling the rotational speed of the motor according to the current value of the motor includes: when the current value of the motor is smaller than or equal to the preset safe dehydration current corresponding to the rotation speed stabilization stage, controlling the rotation speed of the motor according to a preset rotation speed change curve; when the current value of the motor is larger than the preset safe dehydration current, the rotating speed of the motor is controlled to be reduced by a preset gear, and then the rotating speed is maintained stable.

Specifically, when the washing machine enters a dehydration process, the washing machine is in a certain dehydration gear and the rotating speed of the motor reaches a stable state, the rotating speed of the motor has a corresponding relation with the preset safe dehydration current of the motor. Illustratively, table 1 shows a correspondence relationship between a rotational speed of a motor and a preset safe dehydrating current in a washing machine. As shown in table 1, when the rotation speed of the motor in the washing machine is 400rpm, the preset safe dehydration current of the motor is 2.0A, that is, when the current value of the motor is detected to be less than or equal to 2.0A, it can be judged that the current value of the motor is within the preset safe dehydration current range, and at this time, serious eccentricity does not occur in the corresponding laundry in the washing machine, or no water ring is formed between the inner tub and the outer tub of the washing machine, so that the problems of large dehydration vibration degree, high dehydration power consumption, easy damage of the motor and the like are caused. Therefore, when the washing machine is in any dehydration gear, the preset safe dehydration current can be determined by looking up the table 1 according to the corresponding rotation speed of the stable motor, and further, the current value detected in the rotation speed stabilization stage corresponding to the current gear is compared with the preset safe dehydration current in a magnitude logic relation, so that whether the current of the motor is in the preset safe dehydration current range can be judged, and the rotation speed of the motor is controlled to be increased or decreased according to the judgment result.

It should be noted that, as shown in table 1, when the rotational speed of the motor is greater, the preset safe dehydration current corresponding to the motor is greater, table 1 is only an example, and the specific correspondence between the rotational speed of the stable phase and the preset safe dehydration current is not limited in the embodiment of the present disclosure.

TABLE 1

Rotational speed/rpm	Preset safe dehydration current/A
		400	2.0
600	2.5
		800	3.0
1000	3.5
		1200	4.0
1400	4.5
		1600	5.0

Specifically, if the current value of the motor is detected to be less than or equal to the preset safe dehydration current corresponding to the rotation speed stabilization stage, after the motor finishes the dehydration process in the current dehydration stage, the rotation speed of the motor is controlled to be increased to the next gear according to the preset rotation speed change curve shown in fig. 2. For example, if the current detection value corresponding to the 3-gear rotation speed stabilization stage of the washing machine is smaller than or equal to the preset safe dehydration current corresponding to the 3-gear rotation speed stabilization stage, the washing machine is controlled to enter a 4-gear dehydration stage from the 3-gear dehydration stage, and the rotation speed of the stable state corresponding to the 4-gear dehydration stage is larger than the rotation speed of the stable state corresponding to the 3-gear dehydration stage.

Illustratively, fig. 3 is a schematic diagram of a spin control curve of a motor of a washing machine according to an embodiment of the present disclosure, and an abscissa in fig. 3 represents a spin time T in seconds, and an ordinate represents a rotational speed N of the motor of the washing machine in rpm. As shown in fig. 3, when the current value of the motor is detected to be greater than the preset safe dehydration current, at this time, the corresponding laundry in the washing machine may have serious eccentricity, or a water ring is formed between the inner tub and the outer tub of the washing machine, so that the problems of high dehydration vibration degree, high dehydration power consumption, easy damage of the motor and the like are caused, the rotation speed of the washing machine can be controlled to be reduced from 1400rpm to 1200rpm, i.e. the washing machine is controlled to reduce the primary dehydration gear, when the rotation speed of the motor is in a steady state after the dehydration gear is reduced, the current value of the motor is continuously detected, and the rotation speed of the motor is controlled to be increased or reduced by combining the logical comparison relation between the current value of the motor and the preset safe dehydration current in the corresponding rotation speed stabilization stage until the dehydration procedure is finished, i.e. until the dehydration stroke is finished or the dehydration time is exhausted.

Specifically, if the current value corresponding to the motor is detected to be greater than the preset safe dehydration current, the rotation speed of the motor is controlled to be reduced by a preset gear, for example, the rotation speed of the motor is reduced from a 4-gear dehydration stage to a 3-gear dehydration stage, after the rotation speed of the motor is reduced to the 3-gear dehydration stage and reaches a stable state, the current value of the motor is continuously detected in real time, and the increase or the decrease of the rotation speed of the motor is controlled according to the method in the embodiment by combining the logical comparison relation between the current value of the motor and the preset safe dehydration current corresponding to the stable rotation speed stage, which is not repeated herein.

When the current value of the motor is detected to be larger than the preset safe dehydration current, the washing machine can be controlled to lower the primary dehydration gear, for example, the 4 th dehydration gear is lowered to the 3 rd dehydration gear; the washing machine may also be controlled to lower the multi-stage spin-down range, for example, from the 4-stage spin-down range to the 2-stage spin-down range, and the preferred embodiment of the present disclosure is to re-determine the current value after the one-stage spin-down range is lowered.

In some embodiments, before controlling the rotational speed of the motor according to the current value of the motor, further comprising: acquiring a weight value of clothes in the washing machine; dynamically adjusting preset safe dehydration current corresponding to the rotation speed stabilization stage according to the weight value of the clothes; wherein, the preset safe dehydration current is in direct proportion to the weight value of the clothes.

Specifically, when the washing machine is in the dewatering process, the heavier the clothes in the washing machine, correspondingly, the larger the centrifugal force generated by the clothes in the dewatering process, the larger the centrifugal force is, the larger the current is needed to meet the dewatering requirement of the washing machine, and therefore the preset safe dewatering current in the rotation speed stabilization stage can be adjusted according to the weight value of the clothes in the washing machine. Specifically, when the weight of the laundry in the washing machine is large, the preset safe dehydrating current in the rotation speed stabilization stage is correspondingly increased; when the weight of clothes in the washing machine is smaller, the preset safe dehydration current corresponding to the rotation speed stabilization stage is reduced, namely, the preset safe dehydration current is increased along with the increase of the weight value of the clothes in the washing machine and is reduced along with the decrease of the weight value of the clothes in the washing machine, so that the intelligent degree of the dehydration control process of the washing machine is improved.

In some embodiments, before controlling the washing machine to perform the dehydration process, further comprising:

and circularly executing a second preset control process until the eccentricity value of the clothes in the washing machine is smaller than or equal to the maximum eccentricity value of the preset rotating speed.

Specifically, the washed clothes in the washing machine are easy to agglomerate to one side after washing, and further eccentricity is easy to generate, when the eccentricity value of the clothes in the washing machine is large, the vibration quantity of the washing machine in the dehydration process is large, so that the washing inner cylinder collides with the shell of the washing machine, noise is generated, and the dehydration effect of the washing machine is influenced. Therefore, before the washing machine is used for dewatering, the washed clothes in the washing machine are required to be treated, the eccentricity of the clothes in the washing machine is reduced, so that the eccentricity of the clothes in the washing machine is smaller than or equal to the maximum eccentricity of the preset rotating speed, and the problem that the dewatering effect of the washing machine is affected due to the fact that the washing inner barrel collides with the outer shell of the washing machine and noise is generated due to the fact that the vibration quantity is large in the dewatering process is avoided.

Illustratively, table 2 shows the correspondence of the rotational speed with the preset rotational speed maximum eccentricity value. When the washing machine is selected to dehydrate at the gear with the preset rotating speed of 400rpm, the corresponding maximum eccentric value of the preset rotating speed is 150 through inquiring the table 2, and the eccentric value of the clothes in the washing machine is ensured to be less than or equal to 150, namely, the eccentric value of the clothes in the washing machine is ensured to be within the safe eccentric value range, and the problems of overlarge vibration quantity and the like in the dehydration process are avoided. Therefore, based on the corresponding relation between the preset rotating speed and the maximum eccentric value of the preset rotating speed shown in table 2, when the washing machine is selected to dehydrate at any gear with the preset rotating speed, the corresponding safe eccentric value of the preset rotating speed can be obtained through the lookup table 2, the safe eccentric value of the preset rotating speed is further used as a reference standard, the eccentric value of the clothes in the washing machine is controlled to be smaller than or equal to the corresponding safe eccentric value of the preset rotating speed, and after the eccentric value of the clothes in the washing machine meets the logic relation, the washing machine can be controlled to enter the dehydration process.

TABLE 2

Rotational speed/rpm	Maximum eccentricity value of preset rotating speed
		Non-dehydration	＞150
400	150
		600	120
800	100
		1000	90
1200	70
		1400	50
1600	30

As shown in table 2, when the preset rotation speed of the motor is greater, the dewatering power and the dewatering vibration of the washing machine are both greater, and at this time, the corresponding preset rotation speed maximum eccentric value of the washing machine is set to be smaller, table 2 is only an example, and the specific correspondence between the preset rotation speed and the preset rotation speed maximum eccentric value is not limited in the embodiment of the present disclosure.

In some embodiments, the second preset control process includes:

controlling the washing machine to shake and scatter clothes in the washing machine;

controlling the motor to rotate at a preset eccentric sensing rotating speed and acquiring an eccentric value of the clothes;

and controlling the working state of the washing machine according to the eccentricity value of the clothes.

Specifically, after the water discharge of the washing machine is completed and before the washing machine enters the dehydration, the clothes in the washing machine are subjected to shaking and scattering treatment, so that the clothes in the washing machine are in a uniform distribution state, and the eccentricity of the clothes is reduced. After clothes in the washing machine are subjected to shaking and scattering treatment, the motor is controlled to rotate at a preset eccentric sensing rotating speed, and an eccentric value of the clothes is obtained. And then, inquiring a corresponding maximum eccentric value of the preset rotating speed through a table 2 according to the preset eccentric sensing rotating speed, comparing the obtained eccentric value of the clothes with the maximum eccentric value of the preset rotating speed, and controlling the working state of the washing machine according to the logic relation between the eccentric value of the clothes and the maximum eccentric value of the preset rotating speed, for example, controlling whether the washing machine enters a dewatering state or not. The preset eccentric sensing rotating speed is the rotating speed corresponding to the rotating speed of the washing machine, wherein clothes can be attached to the wall of the drum, and the rotating speed of the motor is larger than the washing rotating speed and smaller than the dewatering rotating speed.

Comparing the eccentric value of the clothes with the maximum eccentric value of the preset rotating speed, and controlling the washing machine to execute the dehydration process when detecting that the eccentric value of the clothes is smaller than or equal to the maximum eccentric value of the preset rotating speed, wherein the corresponding washing machine does not have the problems of overlarge vibration quantity and the like in the dehydration process; when the eccentric value of the clothes is detected to be larger than the maximum eccentric value of the preset rotating speed, the corresponding washing machine is easy to generate the problems of overlarge vibration quantity in the dehydration process, and the like, at the moment, the washing machine is controlled to prohibit entering the dehydration process, the washing machine is controlled to shake and scatter the clothes again until the eccentric value of the clothes is smaller than or equal to the maximum eccentric value of the preset rotating speed after the shake and scatter treatment, and the washing machine is controlled to execute the dehydration process.

It should be noted that, in the process of shaking and scattering the clothes in the washing machine, the rotation speed of shaking and scattering of the washing machine is controlled to be greater than or equal to the lowest washing rotation speed in the washing process of the washing machine and lower than the preset eccentric sensing rotation speed.

In some embodiments, before controlling the washing machine to perform the dehydration process, further comprising:

acquiring the cycle execution times of a second preset control process;

when the cycle execution times exceeds the preset times, acquiring the safe dehydration rotating speed corresponding to the current eccentric value of the clothes;

the motor in the washing machine is controlled to perform the dehydration process at a safe dehydration rotation speed.

Specifically, when the detected eccentricity value of the laundry is greater than the preset maximum eccentricity value of the rotational speed, in order to reduce the eccentricity value of the laundry in the washing machine to achieve the washing machine entering the dehydration process, the second preset control process is performed again until the detected eccentricity value of the laundry is less than or equal to the preset maximum eccentricity value of the rotational speed, that is, the second preset control process is performed in a circulating manner. In this process, the preset number of times may be set for the second preset control process, and when the number of times of cycle execution of the second preset control process exceeds the preset number of times, it is still detected that the eccentric value of the laundry is greater than the preset maximum rotational speed eccentric value, and at this time, it may be determined that the eccentric value of the laundry cannot be achieved by performing shaking-off treatment on the laundry in the washing machine is less than or equal to the preset maximum rotational speed eccentric value. At this time, in order to ensure that the washing machine can enter the dehydration process, the safe dehydration rotation speed corresponding to the current eccentricity value of the clothes is obtained through the lookup table 2 at this time, and then the washing machine is controlled to enter the dehydration process at the safe dehydration rotation speed corresponding to the current eccentricity value.

For example, referring to table 2, the washing machine is selected to perform dehydration at a preset rotation speed of 600rpm, when the washing machine performs the second preset control process for the third time, the eccentricity value of the laundry is still detected, for example, but not limited to 130, and is greater than the maximum eccentricity value 120 corresponding to the preset rotation speed of 600rpm, at this time, it may be determined that the eccentricity value of the laundry cannot be achieved by performing the shaking and scattering treatment on the laundry in the washing machine, and the safe dehydration rotation speed corresponding to the current eccentricity value 130 of the laundry is obtained, for example, 400rpm, and then the washing machine is controlled to enter the dehydration stage at the safe dehydration rotation speed, so that the dehydration stage may be controlled to be performed at the rotation speed of 400rpm all the time, and then the rotation speed of 400rpm may be maintained no matter how much current is required until the dehydration time reaches the set time.

It should be noted that, the preset number of times of executing the second preset control process may be set based on the requirement in the embodiment of the present disclosure, and the specific preset number of times is not specifically limited in the embodiment of the present disclosure.

In some embodiments, the control loop executes the second preset control process when the current value of the motor in the first gear rotational speed stabilization phase is greater than the preset safe dehydration current corresponding to the first gear rotational speed stabilization phase.

Specifically, when the washing machine is in the first gear dehydration stage and the rotation speed of the motor reaches a stable state, detecting the current value of the motor, if the current value of the motor is detected to be larger than the preset safe dehydration current in the first gear rotation speed stabilization stage, judging that the current of the current motor exceeds the safe dehydration current range, and the current value of the motor is necessarily larger than the preset safe dehydration current after the subsequent rotation speed upshift, so that the motor is not controlled to rotate and downshift, and the washing machine is controlled to circularly execute a second preset control process, namely re-executing the clothes shaking and eccentric detection process until the current value of the first gear rotation speed stabilization stage is judged again.

On the basis of the foregoing embodiment, fig. 4 exemplarily shows a specific flowchart of a dehydration control method of a washing machine provided in an embodiment of the present disclosure. As shown in fig. 4, the method comprises the steps of:

s401, shaking and scattering clothes.

S402, acquiring the eccentricity sensing value and the times.

S403, whether the eccentricity value is smaller than or equal to the limit value. If yes, executing S404; if not, S414 is performed.

S404, dewatering is started according to the set rotating speed.

S405, climbing the first dehydration stage and maintaining.

S406, whether the motor current is smaller than or equal to a first dehydration limit value. If yes, executing S407; if not, S401 is performed.

S407, maintaining the stage of dehydration.

S408, climbing to the next dehydration stage and maintaining.

S409, whether the motor current is smaller than or equal to the dehydration limit value of the gear. If yes, executing S410; if not, S405 is performed.

S410, maintaining the stage of dehydration.

S411, climbing to the next dehydration stage and maintaining.

S412, whether the motor current is smaller than or equal to the dehydration limit value of the gear. If yes, execute S413; if not, S408 is performed.

And S413, repeating the above cycle until the dehydration time reaches the set time to finish dehydration.

S414, whether the sensing times are smaller than the extreme value. If yes, executing S401; if not, S415 is performed.

S415, matching the dehydration rotating speed according to the eccentricity value and maintaining the matched rotating speed in the dehydration stage.

According to the embodiment of the disclosure, after the rotation speed change of the motor in the washing machine is detected in real time in the dehydration stage, the current value of the motor in the stage with stable rotation speed is maintained, and the dehydration rotation speed of the washing machine is controlled according to the current value of the motor, so that the rotation speed of the washing machine is adjusted by utilizing the maximum current threshold value of the motor corresponding to different dehydration step stages, the washing machine is controlled to carry out dehydration at the optimal dehydration rotation speed, the dehydration power consumption and the dehydration vibration degree of the washing machine are reduced, the dehydration effect of the washing machine is optimized, the problems that the motor of the washing machine is easy to damage and the washing barrel is easy to explode are avoided, and the use experience of a user is improved.

Based on the same inventive concept, the embodiment of the disclosure also provides a dehydration control device of a washing machine. Fig. 5 is a schematic structural diagram of a dehydration control apparatus of a washing machine according to an embodiment of the present disclosure, as shown in fig. 5, the apparatus includes: a dehydration control module 51 for controlling the washing machine to perform a dehydration process; the loop execution module 52 is configured to loop the first preset control process until the dehydration process is completed.

The dehydration control apparatus of the washing machine provided in the above embodiments can perform the dehydration control method of the washing machine provided in each of the above embodiments, and have the same or corresponding advantages, and will not be described in detail herein.

The disclosed embodiments also provide a storage medium storing a program or instructions that cause a computer to perform the steps of any of the methods provided in the above-described implementations.

In some embodiments, the computer executable instructions, when executed by a computer processor, may also be used to implement the technical solutions of any of the methods provided by the embodiments of the present disclosure, achieving corresponding beneficial effects.

From the above description of embodiments, it will be apparent to those skilled in the art that the present disclosure may be implemented by means of software and necessary general purpose hardware, but may of course also be implemented by means of hardware, although in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present disclosure may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a FLASH Memory (FLASH), a hard disk, or an optical disk of a computer, etc., including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method of the embodiments of the present disclosure.

On the basis of the foregoing implementation manner, the embodiment of the present disclosure further provides a washing machine, and fig. 6 is a schematic structural diagram of the washing machine provided by the embodiment of the present disclosure. As shown in fig. 6, the washing machine includes a processor 601 and a memory 602, and the processor 601 executes the steps of the method of each embodiment described above by calling a program or instructions stored in the memory 602, so that the advantages of the embodiments described above are achieved, and the description thereof is omitted.

Specifically, as shown in fig. 6, a washing machine may be provided that includes at least one processor 601, at least one memory 602, and at least one communication interface 603. The various components in the washing machine are coupled together by a bus system 606. The communication interface 603 is used for information transfer with an external device. It is understood that the bus system 606 is used to enable connected communications between these components. The bus system 606 includes a power bus, a control bus, and a status signal bus in addition to the data bus. The various buses are labeled as bus system 606 in fig. 6 for clarity of illustration.

It is to be appreciated that the memory 602 in the present embodiment can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. In some implementations, the memory 602 stores the following elements: executable units or data structures, or a subset thereof, or an extended set of operating systems and applications. In the embodiments of the present disclosure, the processor 601 performs the steps of the embodiments of the method provided by the embodiments of the present disclosure by calling a program or instructions stored in the memory 602.

The method provided by the embodiments of the present disclosure may be applied to the processor 601 or implemented by the processor 601. The processor 601 may be an integrated circuit chip with signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in the processor 601 or instructions in the form of software. The processor 601 may be a general purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The steps of the method provided in the embodiments of the present disclosure may be directly implemented as a hardware decoding processor or implemented by a combination of hardware and software units in the decoding processor. The software elements may be located in a random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory 602 and the processor 601 reads the information in the memory 602 and performs the steps of the method in combination with its hardware.

The washing machine may also include one physical component, or a plurality of physical components, in accordance with instructions generated by the processor 601 when performing the methods provided by the embodiments of the present disclosure. The different physical components may be located inside the washing machine or outside the washing machine, such as a cloud server or the like. The respective physical components cooperate with the processor 601 and the memory 602 to realize the functions of the washing machine in this embodiment.

It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.

The above is merely a specific embodiment of the disclosure to enable one skilled in the art to understand or practice the disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A dehydration control method of a washing machine, comprising:

controlling the washing machine to execute a dehydration program;

circularly executing a first preset control process until the dehydration procedure is finished;

the first preset control process comprises the following steps:

the method comprises the steps of obtaining a current value of a motor in the washing machine at a stage of maintaining stable rotation speed after the rotation speed of the motor is changed;

and controlling the rotating speed of the motor according to the current value of the motor.

2. The dehydration control method of a washing machine according to claim 1, wherein said controlling a rotation speed of said motor according to a current value of said motor comprises:

when the current value of the motor is smaller than or equal to the preset safe dehydration current corresponding to the rotation speed stabilization stage, controlling the rotation speed of the motor according to a preset rotation speed change curve;

when the current value of the motor is larger than the preset safe dehydration current, the rotating speed of the motor is controlled to be reduced by a preset gear, and then the rotating speed is maintained stable.

3. The dehydration control method of a washing machine according to claim 2, wherein before said controlling the rotational speed of the motor according to the current value of the motor, further comprising:

acquiring a weight value of clothes in the washing machine;

dynamically adjusting the preset safe dehydration current corresponding to the rotation speed stabilization stage according to the weight value of the clothes; wherein the preset safe dehydrating current is in direct proportion to the weight value of the clothes.

4. The dehydration control method of a washing machine according to claim 1, wherein before said controlling said washing machine to perform a dehydration program, further comprising:

and circularly executing a second preset control process until the eccentricity value of the clothes in the washing machine is smaller than or equal to the maximum eccentricity value of the preset rotating speed.

5. The dehydration control method of a washing machine as claimed in claim 4, wherein the second preset control process comprises:

controlling the washing machine to shake and scatter clothes in the washing machine;

controlling the motor to rotate at a preset eccentric sensing rotating speed and acquiring an eccentric value of the clothes;

and controlling the working state of the washing machine according to the eccentric value of the clothes.

6. The dehydration control method of a washing machine according to claim 5, wherein said controlling an operating state of the washing machine according to an eccentricity value of the laundry comprises:

when the eccentricity value of the clothes is smaller than or equal to the maximum eccentricity value of the preset rotating speed, controlling the washing machine to execute the dewatering program;

when the eccentric value of the clothes is larger than the maximum eccentric value of the preset rotating speed, the washing machine is controlled to shake and scatter the clothes.

7. The dehydration control method of a washing machine according to any one of claims 4 to 6, further comprising, before said controlling said washing machine to execute a dehydration program:

acquiring the cycle execution times of the second preset control process;

when the cycle execution times exceeds the preset times, acquiring the safe dehydration rotating speed corresponding to the current eccentricity value of the clothes;

and controlling a motor in the washing machine to execute the dehydration procedure at the safe dehydration rotation speed.

8. The dehydration control method of a washing machine according to any one of claims 4 to 6, wherein said controlling the rotation speed of the motor according to the current value of the motor comprises:

and when the current value of the motor in the first gear rotating speed stabilization stage is larger than the preset safe dehydration current corresponding to the first gear rotating speed stabilization stage, the control loop executes the second preset control process.

9. A dehydration control apparatus of a washing machine, comprising:

the dehydration control module is used for controlling the washing machine to execute a dehydration program;

the circulation execution module is used for circularly executing a first preset control process until the dehydration program is ended;

the first preset control process comprises the following steps:

the method comprises the steps of obtaining a current value of a motor in the washing machine at a stage of maintaining stable rotation speed after the rotation speed of the motor is changed;

and controlling the rotating speed of the motor according to the current value of the motor.

10. A washing machine, comprising:

a processor and a memory, the processor executing the steps of the dehydration control method of a washing machine according to any one of claims 1 to 8 by calling a program or instructions stored in the memory.