CN107805912B - Dewatering control method for washing machine - Google Patents

Abstract

The invention relates to the technical field of washing machines, in particular to a dewatering control method of a washing machine. The dehydration control method provided by the invention can effectively reduce the overlapped noise generated during dehydration and drainage by the upper drainage pump, improve the dehydration effect by utilizing the noise reduction dehydration of the washing machine, and simultaneously reduce the loud sound generated during dehydration with water.

Description

Method for controlling dehydration of washing machine

technical field

The invention relates to the technical field of washing machines, in particular to a method for controlling the dehydration of washing machines.

Background technique

The washing machine with the upper drainage method is more and more accepted by users. This drainage method is to pump out the water through the pump. Its advantage is that the discharged water can be reused for flushing the toilet and mopping the floor. The washing machine can also be placed where there is no floor drain, and the water can be drained into the water container through the extension of the drain pipe or directly.

However, this drainage method also has a disadvantage. This type of drainage structure is usually more complicated. Since the drainage through the drainage pump requires power consumption, noise will be generated during the work of the motor. During the dehydration process of the washing machine, a large amount of water will come out of the clothes under the action of centrifugal force, and at the same time, the drainage pump will discharge the water generated by dehydration. The above process will cause abnormal noise due to the superimposition of dehydration noise and motor noise, which may easily make users mistake it for the washing machine. failure.

In view of this, the present invention is proposed.

Contents of the invention

The present invention aims to provide a washing machine dehydration control method. A noise reduction dehydration stage is set in the dehydration program to reduce the noise generated by dehydration and the upper drainage pump, and the drainage pump operates at a certain start-stop ratio, which also reduces noise. role.

In order to achieve the above object, the present invention specifically adopts the following scheme:

A washing machine dehydration control method, the washing machine executes the dehydration program and the upper drainage program at the same time, and sets the noise reduction dehydration stage at intervals in the dehydration program in which the motor speed is lower than the default dehydration speed, so as to reduce the noise when the dehydration program and the upper drainage program are overlapped.

In the above solution, the washing machine runs the dehydration program after the drainage program ends, and the water that is thrown off from the clothes will still appear during the dehydration program. Since the drainage of the washing machine on the upper drain is to lift the waste water through the water pump and then discharge it, during the dehydration process, the upper drain The drainage pump also operates to drain water at the same time, and the superposition of the sound of the upper drainage pump and the noise generated by the dehydration program causes a bad user experience. Therefore, the present invention performs dehydration in stages at different speeds during the operation of the dehydration program. In some stages, the motor maintains a low speed, which reduces the dehydration noise and at the same time dehydrates the clothes in the bucket evenly, so that the clothes are evenly distributed in the bucket, and prevents the subsequent washing machine from hitting the bucket when it dehydrates at a higher speed. Noise.

A further solution of the present invention is: the dehydration program includes controlling the washing machine to alternately perform the conventional dehydration stage and the noise reduction dehydration stage. The washing machine motor speed in the normal spin phase.

In the above solution, the existing washing machine is often set with a conventional dehydration speed. In the dehydration program of the present invention, the motor speed not only adopts the default conventional speed of the system, but also adds a noise reduction dehydration stage whose speed is much lower than the default speed of the system. While reducing the noise of the dehydration process, it also reduces the noise generated by superposition.

A further solution of the present invention is: the dehydration program includes a low-speed dehydration step that runs first and a high-speed dehydration step that runs later, and the low-speed dehydration step includes controlling the washing machine to alternately perform a conventional low-speed dehydration stage and a noise reduction dehydration stage, wherein the conventional The motor speed of the washing machine in the low-speed dehydration stage is higher than that set in the noise-reduction dehydration stage; the high-speed dehydration step includes controlling the washing machine to alternately perform the conventional high-speed dehydration stage and the noise-reduction dehydration stage, and the motor speed of the washing machine in the conventional high-speed dehydration stage is greater than the setting in the conventional low-speed dehydration stage.

In the above solution, the existing washing machine is often equipped with a low-speed rotation that runs first and a high-speed rotation that runs later in the dehydration program, so that the clothes are evenly distributed in the bucket when the low-speed rotation is performed, so as to prevent problems such as imbalance in high-speed dehydration. . The dehydration program of the present invention includes a low-speed dehydration step and a high-speed dehydration step. The motor speed of the high-speed dehydration step is faster than that of the low-speed dehydration step. The dehydration is carried out at alternate speeds, removing part of the moisture in the clothes in advance, further improving the uniform distribution effect, and then performing high-speed dehydration, so that the inner tub alternately rotates at a speed higher than the conventional low-speed dehydration and at a lower noise-reducing speed to reduce the noise. The dirty water in the rinsed clothes will be removed, and the water in the entangled part will not be shaken off due to the entanglement of the clothes.

A further solution of the present invention is: the conventional low-speed dehydration stage, the duration of the conventional high-speed dehydration stage and the noise-reduction dehydration stage are the same or different; preferably, the duration of the noise-reduction dehydration stage is the same in the low-speed dehydration step and the high-speed dehydration step.

In the above scheme, since noise reduction dehydration, conventional low speed dehydration and conventional high speed dehydration are set in order from low to high, and the motor speed of noise reduction dehydration stage is much lower than the speed of conventional low speed and conventional high speed dehydration, so in the dehydration program The operation time of each stage will be adjusted according to the dehydration situation and the working status of the upper drainage pump to achieve the dehydration effect with the lowest noise. Among them, since both the low-speed dehydration step and the high-speed dehydration step contain a noise-reducing dehydration stage, which can improve the uniform distribution of the clothes in the bucket in addition to reducing noise, so the same duration is set in the low-speed dehydration step and the high-speed dehydration step. Noise reduction dehydration stage.

A further solution of the present invention is: the washing machine controls the motor speed of the noise reduction dehydration stage to increase to the speed of the conventional dehydration stage at a certain acceleration, or controls the motor speed of the noise reduction dehydration stage to directly increase to the speed of the conventional dehydration stage.

In the above scheme, when dehydrating, the washing machine motor accelerates to a normal speed with a certain acceleration from the noise reduction stage of a lower speed, and then maintains the normal speed to rotate at a constant speed. This acceleration process can discharge part of the moisture of the loaded clothes, making the clothes more It is well attached to the wall of the inner tub, and then runs at a constant speed to complete the eccentric adjustment, so that the laundry load is evenly distributed in the tub to adapt to the next step of higher speed dehydration.

A further solution of the present invention is: the upper drainage program controls the upper drainage pump of the washing machine to perform drainage and stop alternately.

In the above solution, the upper drainage pump works at a certain start-stop ratio, which reduces the operating temperature of the drainage pump, prolongs the service life, and reduces the frequency of noise generated by the upper drainage pump.

A further solution of the present invention is: the method comprises the steps of:

S1. The control method is turned on;

S2. Execute the dehydration program and the upper drainage program at the same time;

S3. According to the set dehydration speed and dehydration time, the conventional dehydration stage and the noise reduction dehydration stage are alternately executed until the dehydration is completed.

A further solution of the present invention is: the step S3 also includes a low-speed dehydration step running earlier and a high-speed dehydration step running later, and the low-speed dehydration step includes controlling the washing machine motor to alternately perform a conventional low-speed dehydration stage with a rotation speed of n _L and The noise reduction dehydration stage with a rotating speed of n _D , wherein n _L > n _D is set; the high-speed dehydration step includes controlling the washing machine motor to alternately perform a conventional high-speed dehydration stage with a rotational speed of n _H and a noise reduction dehydration stage with a rotational speed of n _D , n _H >n _L setting.

A further solution of the present invention is: the dehydration time in the step S3 includes the conventional low-speed dehydration stage T _L seconds and the noise-reducing dehydration stage T _D seconds in the low-speed dehydration step performed earlier, and the conventional high-speed dehydration step executed later. High-speed dehydration stage T _H seconds and noise reduction dehydration stage T _D seconds.

In the above solution, the washing machine motor alternately performs regular low-speed rotation and noise-reducing rotation in the low-speed dehydration step to adjust the load eccentricity before dehydration, especially for clothes that absorb more water such as sweaters. It is easier to directly enter the high-speed dehydration step In the event of drum bumping to generate noise, set and control the inner drum to alternately perform low-speed rotation and noise reduction rotation at a certain time and a certain speed, and use the noise reduction dehydration stage with a speed much lower than the normal speed to remove part of the water in advance and adjust the eccentricity of the load. When it reaches the eccentric value range corresponding to the high-speed dehydration speed, it can quickly enter the high-speed dehydration, reduce the vibration and noise of the washing machine, and improve the dehydration performance of the washing machine.

A further solution of the present invention is: when the washing machine performs the final dehydration, the step S3 also includes a final dehydration step performed after the high-speed dehydration step, and the final dehydration step is to control the washing machine motor to run at a speed n _H within a certain period of time .

In the above solution, when the final dehydration is performed, after the washing machine performs the high-speed dehydration step, a noise reduction dehydration stage is added to make the clothes evenly distributed in the inner tub, so that the final dehydration with a longer duration and a higher motor speed is smooth Running, play a good dehydration effect.

The beneficial effects of the present invention are:

1. The control method provided by the present invention includes a noise-reducing dehydration stage whose rotation speed is much lower than that of conventional dehydration, so as to reduce the noise generated by the dehydration of the washing machine;

2. The control method provided by the present invention includes a low-speed dehydration step that runs first and a high-speed dehydration step that runs later, and both steps include a noise reduction dehydration stage with a rotation speed much lower than the conventional dehydration speed, which improves The distribution effect of the low-speed dehydration stage reduces the noise of the high-speed dehydration stage;

3. The control method provided by the present invention includes running the upper drainage pump with a certain start-stop ratio, which reduces the time for the upper drainage pump and the motor to run simultaneously, thereby reducing the noise generated by the superposition of the two.

Description of drawings

Fig. 1 is a schematic diagram of a method for controlling dehydration of a washing machine provided by the present invention.

FIG. 2 is a parameter table of Embodiment 1 of the present invention.

Fig. 3 is a parameter table of Embodiment 2 of the present invention.

detailed description

In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the following will further describe the embodiments of the present invention in detail in conjunction with the accompanying drawings.

Example 1

In this embodiment, a washing machine dehydration control method is provided. The washing machine executes the dehydration program and the upper drainage program at the same time, and in the dehydration program, the noise reduction dehydration stage with the motor speed lower than the default dehydration speed is set at intervals to reduce the dehydration program and the upper drainage program. Noise when overlapping executions.

In this embodiment, the washing machine runs the dehydration program after the drainage program ends. During the dehydration program, there will still be water thrown off from the clothes. Since the drainage of the washing machine on the upper drain is to lift the waste water through the water pump and then discharge it, during the dehydration process, The upper drainage pump is also running to drain water at the same time. The sound of the upper drainage pump and the noise generated by the dehydration program are superimposed to cause a bad user experience. Therefore, the present invention performs dehydration in stages at different speeds during the operation of the dehydration program. In some stages, the motor maintains a low speed, which reduces the dehydration noise and at the same time dehydrates the clothes in the bucket evenly, so that the clothes are evenly distributed in the bucket, and prevents the subsequent washing machine from hitting the bucket when it dehydrates at a higher speed. Noise .

In this embodiment, the dehydration program includes controlling the washing machine to alternately perform a conventional dehydration stage and a noise reduction dehydration stage. In the conventional dehydration stage, the washing machine performs dehydration at the default speed of the system, and the motor speed of the washing machine in the noise reduction dehydration stage is lower than that of the conventional dehydration. Phases of washing machine motor speed.

In this embodiment, the existing washing machine is usually set with a conventional dehydration speed. In the dehydration program of the present invention, the motor speed not only adopts the default conventional speed of the system, but also adds a noise reduction dehydration stage whose speed is much lower than the default speed of the system. , while reducing the noise of the dehydration process, it also reduces the noise generated by superposition.

In this embodiment, the dehydration program includes a low-speed dehydration step that runs first and a high-speed dehydration step that runs later, and the low-speed dehydration step includes controlling the washing machine to alternately perform the conventional low-speed dehydration stage and the noise reduction dehydration stage, wherein the conventional low-speed dehydration The motor speed of the washing machine in the stage is higher than that set in the noise-reduction dehydration stage; the high-speed dehydration step includes controlling the washing machine to alternately perform the conventional high-speed dehydration stage and the noise-reduction dehydration stage, and the motor speed of the washing machine in the conventional high-speed dehydration stage is higher than that set in the conventional low-speed dehydration stage.

In this embodiment, in the dehydration program of the existing washing machine, the low-speed rotation of the first operation and the high-speed rotation of the subsequent operation are often set, so that the clothes are evenly distributed in the bucket when the low-speed rotation is performed, so as to prevent imbalance in high-speed dehydration, etc. question. The dehydration program of the present invention includes a low-speed dehydration step and a high-speed dehydration step. The motor speed of the high-speed dehydration step is faster than that of the low-speed dehydration step. The dehydration is carried out at alternate speeds, removing part of the moisture in the clothes in advance, further improving the uniform distribution effect, and then performing high-speed dehydration, so that the inner tub alternately rotates at a speed higher than the conventional low-speed dehydration and at a lower noise-reducing speed to reduce the noise. The dirty water in the rinsed clothes will be removed, and the water in the entangled part will not be shaken off due to the entanglement of the clothes.

In this embodiment, the conventional low-speed dehydration stage, the conventional high-speed dehydration stage and the noise reduction dehydration stage have the same or different durations; preferably, the noise reduction dehydration stage has the same duration in the low-speed dehydration step and the high-speed dehydration step.

In this embodiment, since noise-reduction dehydration, conventional low-speed dehydration and conventional high-speed dehydration are set in order from low to high, and the motor speed in the noise-reduction dehydration stage is much lower than the rotational speed of conventional low-speed and conventional high-speed dehydration, so in the dehydration program According to the dehydration situation and the working status of the upper drainage pump, the running time of each stage will be adjusted to achieve the dehydration effect with the lowest noise. Among them, since both the low-speed dehydration step and the high-speed dehydration step contain a noise-reducing dehydration stage, which can improve the uniform distribution of the clothes in the bucket in addition to reducing noise, so the same duration is set in the low-speed dehydration step and the high-speed dehydration step. Noise reduction dehydration stage.

In this embodiment, the washing machine controls the rotation speed of the motor in the noise reduction dehydration stage to increase to the rotation speed in the conventional dehydration stage at a certain acceleration.

In this embodiment, when dehydrating, the motor of the washing machine accelerates to a normal speed with a certain acceleration from the noise reduction stage at a lower speed, and then maintains the normal speed to rotate at a constant speed. It is better attached to the wall of the inner tub, and then runs at a constant speed to complete the eccentric adjustment, so that the laundry load is evenly distributed in the tub to adapt to the next step of higher speed dehydration.

In this embodiment, the upper drainage program controls the upper drainage pump of the washing machine to perform drainage and stop alternately. The upper drainage pump works with a certain start-stop ratio, which reduces the working temperature of the drainage pump, prolongs the service life, and reduces the frequency of noise generated by the upper drainage pump.

In this embodiment, the control method includes the following steps:

S1. The control method is turned on;

S2. Execute the dehydration program and the upper drainage program at the same time;

S3. According to the set dehydration speed and dehydration time, the conventional dehydration stage and the noise reduction dehydration stage are alternately executed until the dehydration is completed.

In this embodiment, the step S3 also includes a low-speed dehydration step running earlier and a high-speed dehydration step running later, and the low-speed dehydration step includes controlling the washing machine motor to alternately perform a conventional low-speed dehydration stage with a speed of n _L and a speed of The noise reduction dehydration stage of n _D , wherein n _L > n _D setting; the high-speed dehydration step includes controlling the washing machine motor to alternately execute the conventional high-speed dehydration stage with a speed of n _H and the noise reduction dehydration stage with a speed of n _D , n _H > _nL setting.

In this embodiment, the dehydration time in step S3 includes the conventional low-speed dehydration stage T _L seconds and the noise reduction dehydration stage T _D seconds in the first low-speed dehydration step, and the conventional high-speed dehydration step in the subsequent high-speed dehydration step Phase T _H sec and dehydration phase T _D sec with noise reduction.

In this embodiment, in the low-speed dehydration step, the program controls the motor to run at the normal low-speed speed n _L1 for T _L1 seconds, and then reduce the speed to run at the noise-reduced speed n _D for T _D1 seconds, and then increase the speed to n _L1 with a certain acceleration. Run T _L1 second, then run T _D2 seconds at the noise reduction speed n _D , T _D1 is greater than T _D2 , then increase the speed to n _L2 with a certain acceleration and run T _L2 seconds, n _L2 is greater than n _L1 and less than n _H1 , T _L2 is greater than T _L1 , the low-speed dehydration step is completed; then run the high-speed dehydration step, the program controls the motor to run at the normal high-speed speed n _H1 for T _H1 seconds, and then reduce the speed to run at the noise reduction speed n _D for T _D3 seconds, T _D3 is equal to T _D2 , Then increase the rotation speed to n _H1 with a certain acceleration and run for _TH2 seconds, _TH2 is greater than _TH1 , and the high-speed dehydration step is completed.

In this embodiment, the motor of the washing machine alternately performs regular low-speed rotation and noise-reducing rotation in the low-speed dehydration step to adjust the load eccentricity before dehydration, especially for clothes that absorb more water such as sweaters, if they directly enter the high-speed dehydration step It is easy to cause noise due to bumping into the bucket. Set up and control the inner bucket to alternately perform low-speed rotation and noise-reducing rotation at a certain time and at a certain speed. Use the noise-reducing dehydration stage with a speed much lower than the normal speed to remove part of the water in advance and adjust the eccentricity of the load. When it reaches the eccentric value range corresponding to the high-speed dehydration speed, it can quickly enter the high-speed dehydration, reduce the vibration and noise of the washing machine, and improve the dehydration performance of the washing machine.

Example 2

In this embodiment, a washing machine dehydration control method is provided. The washing machine executes the dehydration program and the upper drainage program at the same time, and in the dehydration program, the noise reduction dehydration stage with the motor speed lower than the default dehydration speed is set at intervals to reduce the dehydration program and the upper drainage program. Noise when overlapping executions.

In this embodiment, the washing machine runs the dehydration program after the drainage program ends. During the dehydration program, there will still be water thrown off from the clothes. Since the drainage of the washing machine on the upper drain is to lift the waste water through the water pump and then discharge it, during the dehydration process, The upper drainage pump is also running to drain water at the same time. The sound of the upper drainage pump and the noise generated by the dehydration program are superimposed to cause a bad user experience. Therefore, the present invention performs dehydration in stages at different speeds during the operation of the dehydration program. In some stages, the motor maintains a low speed, which reduces the dehydration noise and at the same time dehydrates the clothes in the bucket evenly, so that the clothes are evenly distributed in the bucket, and prevents the subsequent washing machine from hitting the bucket when it dehydrates at a higher speed. Noise .

In this embodiment, the dehydration program includes controlling the washing machine to alternately perform a conventional dehydration stage and a noise reduction dehydration stage. In the conventional dehydration stage, the washing machine performs dehydration at the default speed of the system, and the motor speed of the washing machine in the noise reduction dehydration stage is lower than that of the conventional dehydration. Phases of washing machine motor speed.

In this embodiment, the existing washing machine is usually set with a conventional dehydration speed. In the dehydration program of the present invention, the motor speed not only adopts the default conventional speed of the system, but also adds a noise reduction dehydration stage whose speed is much lower than the default speed of the system. , while reducing the noise of the dehydration process, it also reduces the noise generated by superposition.

In this embodiment, the dehydration program includes a low-speed dehydration step that runs first and a high-speed dehydration step that runs later, and the low-speed dehydration step includes controlling the washing machine to alternately perform the conventional low-speed dehydration stage and the noise reduction dehydration stage, wherein the conventional low-speed dehydration The motor speed of the washing machine in the stage is higher than that set in the noise-reduction dehydration stage; the high-speed dehydration step includes controlling the washing machine to alternately perform the conventional high-speed dehydration stage and the noise-reduction dehydration stage, and the motor speed of the washing machine in the conventional high-speed dehydration stage is higher than that set in the conventional low-speed dehydration stage.

In this embodiment, in the dehydration program of the existing washing machine, the low-speed rotation of the first operation and the high-speed rotation of the subsequent operation are often set, so that the clothes are evenly distributed in the bucket when the low-speed rotation is performed, so as to prevent imbalance in high-speed dehydration, etc. question. The dehydration program of the present invention includes a low-speed dehydration step and a high-speed dehydration step. The motor speed of the high-speed dehydration step is faster than that of the low-speed dehydration step. The dehydration is carried out at alternate speeds, removing part of the moisture in the clothes in advance, further improving the uniform distribution effect, and then performing high-speed dehydration, so that the inner tub alternately rotates at a speed higher than the conventional low-speed dehydration and at a lower noise-reducing speed to reduce the noise. The dirty water in the rinsed clothes will be removed, and the water in the entangled part will not be shaken off due to the entanglement of the clothes.

In this embodiment, the conventional low-speed dehydration stage, the conventional high-speed dehydration stage and the noise reduction dehydration stage have the same or different durations.

In this embodiment, since noise-reduction dehydration, conventional low-speed dehydration and conventional high-speed dehydration are set in order from low to high, and the motor speed in the noise-reduction dehydration stage is much lower than the rotational speed of conventional low-speed and conventional high-speed dehydration, so in the dehydration program According to the dehydration situation and the working status of the upper drainage pump, the running time of each stage will be adjusted to achieve the dehydration effect with the lowest noise.

In this embodiment, the washing machine controls the motor speed in the dehydration stage of noise reduction to directly increase to the speed in the conventional dehydration stage.

In this embodiment, the upper drainage program controls the upper drainage pump of the washing machine to perform drainage and stop alternately. The upper drainage pump works with a certain start-stop ratio, which reduces the working temperature of the drainage pump, prolongs the service life, and reduces the frequency of noise generated by the upper drainage pump.

In this embodiment, the control method includes the following steps:

S1. The control method is turned on;

S2. Execute the dehydration program and the upper drainage program at the same time;

S3. According to the set dehydration speed and dehydration time, the conventional dehydration stage and the noise reduction dehydration stage are alternately executed until the dehydration is completed.

In this embodiment, the step S3 also includes a low-speed dehydration step running earlier and a high-speed dehydration step running later, and the low-speed dehydration step includes controlling the washing machine motor to alternately perform a conventional low-speed dehydration stage with a speed of n _L and a speed of The noise reduction dehydration stage of n _D , wherein n _L > n _D setting; the high-speed dehydration step includes controlling the washing machine motor to alternately execute the conventional high-speed dehydration stage with a speed of n _H and the noise reduction dehydration stage with a speed of n _D , n _H > _nL setting.

In this embodiment, the dehydration time in step S3 includes the conventional low-speed dehydration stage T _L seconds and the noise reduction dehydration stage T _D seconds in the first low-speed dehydration step, and the conventional high-speed dehydration step in the subsequent high-speed dehydration step Phase T _H sec and dehydration phase T _D sec with noise reduction.

In this embodiment, in the low-speed dehydration step, the program controls the motor to run at the normal low-speed speed n _L1 for T _L1 seconds, then reduce the speed to run at the noise-reduced speed n _D for T _D1 seconds, and then increase the speed to n _L1 and run T _L1 Seconds, then run T _D2 seconds at the noise reduction speed n _D , T _D1 is greater than T _D2 , then increase the speed to n _L2 and run T _L2 seconds, n _L2 is greater than n _L1 and less than n _H1 , T _L2 is greater than T _L1 , low speed The dehydration step is completed; then run the high-speed dehydration step, the program controls the motor to run at the normal high speed n _H1 for T _H1 seconds, then reduce the speed to run at the noise reduction speed n _D for T _D3 seconds, T _D3 is greater than T _D2 , and then increase the speed to n _H1 and run _TH2 seconds, _TH2 is equal to _TH1 , the high-speed dehydration step is completed.

In this embodiment, the motor of the washing machine alternately performs regular low-speed rotation and noise-reducing rotation in the low-speed dehydration step to adjust the load eccentricity before dehydration, especially for clothes that absorb more water such as sweaters, if they directly enter the high-speed dehydration step It is easy to cause noise due to bumping into the bucket. Set up and control the inner bucket to alternately perform low-speed rotation and noise-reducing rotation at a certain time and at a certain speed. Use the noise-reducing dehydration stage with a speed much lower than the normal speed to remove part of the water in advance and adjust the eccentricity of the load. When it reaches the eccentric value range corresponding to the high-speed dehydration speed, it can quickly enter the high-speed dehydration, reduce the vibration and noise of the washing machine, and improve the dehydration performance of the washing machine.

In this embodiment, when the washing machine performs final dehydration, the step S3 further includes a final dehydration step performed after the high-speed dehydration step, and the final dehydration step is to control the washing machine motor to run at a speed n _H within a certain period of time.

In this embodiment, when the final dehydration is performed, after the washing machine performs the high-speed dehydration step, a noise-reduction dehydration stage is added, and the program controls the motor to run at a conventional high-speed speed n _H1 for T _H3 seconds, and T _H3 is greater than T _H2 and T _H1 , so that The clothes are evenly distributed in the inner bucket, so that the last dehydration with a longer duration and a higher motor speed runs smoothly and achieves a good dehydration effect.

The above are only preferred embodiments of the present invention and applied technical principles. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and can also include more other equivalent embodiments without departing from the concept of the present invention, and the present invention The scope is determined by the scope of the appended claims.

Claims (8)

1. A dehydration control method of a washing machine is characterized in that the washing machine simultaneously executes a dehydration program and an upper drainage program, and a noise reduction dehydration stage that the rotating speed of a motor is lower than the conventional dehydration rotating speed is arranged at intervals in the dehydration program, so that the noise generated when the dehydration program and the upper drainage program are executed in an overlapping way is reduced;

the dehydration program comprises a low-speed dehydration step of running in advance and a high-speed dehydration step of running in the later, wherein the low-speed dehydration step comprises the step of controlling the washing machine to alternately execute a conventional low-speed dehydration stage and a noise reduction dehydration stage, and the rotating speed of a motor of the washing machine in the conventional low-speed dehydration stage is greater than that in the noise reduction dehydration stage; the high-speed dehydration step comprises the steps of controlling the washing machine to alternately execute a conventional high-speed dehydration stage and a noise reduction dehydration stage, wherein the rotating speed of a motor of the washing machine in the conventional high-speed dehydration stage is greater than that in the conventional low-speed dehydration stage;

the washing machine controls the rotating speed of a motor in the noise reduction and dehydration stage to be increased to the rotating speed in the conventional dehydration stage at a certain acceleration or controls the rotating speed of the motor in the noise reduction and dehydration stage to be directly increased to the rotating speed in the conventional dehydration stage, and the dehydration program further comprises a last dehydration step:

when the last time of dehydration is carried out, the washing machine controls the motor to operate at a normal high-speed rotating speed after the high-speed dehydration step is executed.

2. The dehydration control method of a washing machine according to claim 1, wherein said dehydration program comprises controlling the washing machine to alternately perform a regular dehydration phase and a noise reduction dehydration phase, wherein the regular dehydration phase is a phase in which the washing machine performs dehydration at a system default rotation speed, and the rotation speed of the washing machine motor in the noise reduction dehydration phase is lower than that in the regular dehydration phase.

3. The dehydration control method of a washing machine of claim 1, wherein the durations of the regular low-speed dehydration stage, the regular high-speed dehydration stage and the noise reduction dehydration stage are the same or different.

4. The dehydration control method of a washing machine according to claim 3, wherein the duration of the noise reduction dehydration stage in the low-speed dehydration step and the high-speed dehydration step is the same.

5. The dehydration control method of a washing machine according to claim 1, wherein said upper drain program controls an upper drain pump of the washing machine to alternately perform draining and stopping.

6. The dehydration control method of a washing machine according to claim 1, wherein said low-speed dehydration step comprises controlling a washing machine motor to alternately perform a rotation speed of n _L At a conventional low speed dewatering stage and at a speed of n _D In the noise-reducing dehydration stage of (1), wherein n _L ＞n _D Setting; the high-speed dehydration step comprises controlling the motor of the washing machine to alternatively execute the rotating speed of n _H Normal high speed dewatering stage and speed of rotation n _D De-noising and dewatering stage of (n) _H ＞n _L And (5) setting.

7. The dehydration control method of a washing machine according to claim 1, wherein said low-speed dehydration step comprises controlling the washing machine to alternately perform a regular low-speed dehydration phase T _L Second and noise reduction dehydration stage T _D Second, and the high-speed dehydration step performed later includes controlling the washing machine to alternately perform a normal high-speed dehydration stepSegment T _H Second and noise reduction dehydration stage T _D And seconds.

8. The dehydration control method of a washing machine according to claim 1, wherein, when the washing machine performs the last dehydration, the last dehydration step is to control a motor of the washing machine to rotate at a speed n for a certain time _H And (5) operating.

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