CN114075749A - Washing machine motor control method and washing machine - Google Patents

Abstract

The application provides a washing machine motor control method and a washing machine, when the real-time current of a motor reaches a starting current, the motor is controlled to drive a roller to rotate at a first rotation amplitude; in the dehydration process, if the water storage phenomenon occurs in the gap between the inner barrel and the outer barrel, the current is increased, so that when the real-time current is greater than the overload current, the motor is controlled to drive the roller to rotate at a second rotation amplitude; correspondingly, the real-time current of the motor is reduced, and when the real-time current is greater than the starting current and less than the overload current, the motor is controlled to drive the drum to rotate at a third rotation amplitude which is greater than the second rotation amplitude so as to carry out the clothes dehydration treatment. Therefore, the water storage device can prevent the phenomenon of thermal protection caused by water storage, ensure the normal work of the motor and further ensure the dehydration effect.

Description

Washing machine motor control method and washing machine

Technical Field

The application relates to the technical field of washing machines, in particular to a washing machine motor control method and a washing machine.

Background

A washing machine is a common household appliance, and generally has functions of washing and dewatering laundry.

When the washing machine dehydrates clothes, a motor in the washing machine drives a drum of the washing machine to rotate at a high speed so as to throw out most of moisture in the clothes, thereby achieving the aim of dehydrating the clothes.

Present washing machine is when dehydrating, and the water phenomenon appears depositing in the clearance of the interior bucket of washing machine and urceolus easily, deposits the load increase that water can lead to the motor, leads to the motor current increase to produce the thermal protection phenomenon, and then influence the normal work of motor, make the clothing dehydration not thorough, the dehydration effect is relatively poor.

Disclosure of Invention

The application provides a washing machine motor control method and a washing machine, which are used for solving the problems of incomplete dehydration and poor dehydration effect of clothes caused by the increase of motor current and the final dehydration of clothes due to water storage in the prior art.

In one aspect, the present application provides a washing machine motor control method, including:

after the washing machine enters a dehydration program, acquiring the real-time current of a motor;

when the real-time current reaches the starting current of the motor, controlling the motor to work in a first working mode so as to drive a drum in the washing machine to rotate at a first rotation amplitude;

when the real-time current is larger than the overload current of the motor, controlling the motor to work in a second working mode so as to drive a drum in the washing machine to rotate at a second rotation amplitude;

when the real-time current is greater than the starting current and less than the overload current, controlling the motor to work in a third working mode so as to drive a drum in the washing machine to rotate at a third rotation amplitude;

the motor working parameters in the first working mode, the second working mode and the third working mode are different, the second rotation amplitude is smaller than the first rotation amplitude, and the second rotation amplitude is smaller than the third rotation amplitude.

In some embodiments, when the motor is a fixed frequency motor, the controlling the motor to operate in a first operating mode includes:

controlling the motor to rotate according to a working mode with the rotation duration as a first duration and the stop duration as a second duration;

wherein the first time length is greater than or equal to a time length for which the rotation speed of the motor is increased from 0 to a maximum rotation speed;

the value range of the second time length is a first preset time length range taking a preset stop time length as a center.

In some embodiments, said controlling said motor to operate in a second mode of operation comprises:

controlling the motor to rotate according to a working mode with the rotation duration as a third duration and the stop duration as a fourth duration;

wherein the third time length is less than a preset rotation time length, and the preset rotation time length is less than the first time length;

and the value range of the fourth time length is the first preset time length range.

In some embodiments, said controlling said motor to operate in a third mode of operation comprises:

controlling the motor to rotate according to a working mode with the rotating time length as a fifth time length and the stopping time length as a sixth time length;

the fifth time length is longer than the preset rotation time length and shorter than the first time length;

and the value range of the sixth time length is the first preset time length range.

In some embodiments, further comprising:

and when the real-time current is smaller than the starting current, controlling the motor to rotate according to a working mode that the rotation time length is a preset rotation time length and the stop time length is a preset stop time length.

In some embodiments, when the motor is an inverter motor, the controlling the motor to operate in a first operating mode includes:

controlling the motor to rotate according to a working mode with the rotating speed being a first speed;

the first speed is smaller than the maximum rotating speed of the motor and is larger than the next gear rotating speed of the maximum rotating speed.

In some embodiments, said controlling said motor to operate in a second mode of operation comprises:

controlling the motor to rotate according to a working mode with the rotating speed as a second speed;

wherein the second speed is greater than a minimum rotational speed of the motor and no more than half of the maximum rotational speed.

In some embodiments, said controlling said motor to operate in a third mode of operation comprises:

controlling the motor to rotate according to a working mode with the rotating speed being a third speed;

wherein the third speed is greater than half of the maximum rotational speed and less than the maximum rotational speed.

In some embodiments, further comprising:

and when the real-time current is less than the starting current, controlling the motor to rotate according to a working mode with the rotating speed being the maximum rotating speed.

In another aspect, the present application provides a washing machine motor control device, including:

the current acquisition module is used for acquiring the real-time current of the motor after the washing machine enters a dehydration program;

the motor control module is used for controlling the motor to work in a first working mode when the real-time current reaches the starting current of the motor so as to drive a drum in the washing machine to rotate at a first rotation amplitude; when the real-time current is larger than the overload current of the motor, controlling the motor to work in a second working mode so as to drive a drum in the washing machine to rotate at a second rotation amplitude; when the real-time current is greater than the starting current and less than the overload current, controlling the motor to work in a third working mode so as to drive a drum in the washing machine to rotate at a third rotation amplitude; the motor working parameters in the first working mode, the second working mode and the third working mode are different, the second rotation amplitude is smaller than the first rotation amplitude, and the second rotation amplitude is smaller than the third rotation amplitude.

In another aspect, the present application provides a washing machine, comprising:

a motor for driving the drum in the washing machine to rotate;

the current detection assembly is used for detecting the real-time current of the motor after the washing machine enters a dehydration procedure;

the control panel is used for acquiring the real-time current of the motor; when the real-time current reaches the starting current of the motor, controlling the motor to work in a first working mode so as to drive a drum in the washing machine to rotate at a first rotation amplitude; when the real-time current is larger than the overload current of the motor, controlling the motor to work in a second working mode so as to drive a drum in the washing machine to rotate at a second rotation amplitude; when the real-time current is greater than the starting current and less than the overload current, controlling the motor to work in a third working mode so as to drive a drum in the washing machine to rotate at a third rotation amplitude; the motor working parameters in the first working mode, the second working mode and the third working mode are different, the second rotation amplitude is smaller than the first rotation amplitude, and the second rotation amplitude is smaller than the third rotation amplitude.

In another aspect, the present application provides a computer-readable storage medium having stored therein computer-executable instructions for implementing the washing machine motor control method described above when the computer-executable instructions are executed by a processor.

The application provides a washing machine motor control method and a washing machine, wherein the method comprises the following steps: after the washing machine enters a dehydration program, acquiring the real-time current of a motor; when the real-time current reaches the starting current of the motor, controlling the motor to work in a first working mode so as to drive a drum in the washing machine to rotate at a first rotation amplitude; when the real-time current is larger than the overload current of the motor, controlling the motor to work in a second working mode so as to drive the drum in the washing machine to rotate at a second rotation amplitude; when the real-time current is greater than the starting current and less than the overload current, controlling the motor to work in a third working mode so as to drive the drum in the washing machine to rotate at a third rotation amplitude; the motor working parameters in the first working mode, the second working mode and the third working mode are different, the second rotation amplitude is smaller than the first rotation amplitude, and the second rotation amplitude is smaller than the third rotation amplitude. In the application, when the real-time current of the motor reaches the starting current, the motor is controlled to drive the roller to rotate in a first rotation amplitude; in the dehydration process, if the water storage phenomenon occurs in the gap between the inner barrel and the outer barrel, the current is increased, so that when the real-time current is greater than the overload current, the motor is controlled to drive the roller to rotate at a second rotation amplitude; correspondingly, the real-time current of the motor is reduced, and when the real-time current is greater than the starting current and less than the overload current, the motor is controlled to drive the drum to rotate at a third rotation amplitude which is greater than the second rotation amplitude so as to carry out the clothes dehydration treatment. Therefore, the water storage device can prevent the phenomenon of thermal protection caused by water storage, ensure the normal work of the motor and further ensure the dehydration effect.

Drawings

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

Fig. 1 is a schematic diagram of a motor control method of a washing machine according to an embodiment of the present application;

fig. 2 is a schematic view of an overall flow of the motor control device controlling the operation of the motor in the embodiment of the present application;

fig. 3 is a schematic diagram of a control device of a washing machine motor according to an embodiment of the present application;

fig. 4 is a schematic view of a washing machine 10 according to an embodiment of the present disclosure.

With the foregoing drawings in mind, certain embodiments of the disclosure have been shown and described in more detail below. These drawings and written description are not intended to limit the scope of the disclosed concepts in any way, but rather to illustrate the concepts of the disclosure to those skilled in the art by reference to specific embodiments.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the embodiments of the present application, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

The words "if", as used herein, may be interpreted as "at … …" or "at … …" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrases "if determined" or "if detected (a stated condition or event)" may be interpreted as "when determined" or "in response to a determination" or "when detected (a stated condition or event)" or "in response to a detection (a stated condition or event)", depending on the context.

It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.

When the washing machine dehydrates clothes, a motor in the washing machine drives a drum of the washing machine to rotate at a high speed so as to throw out most of moisture in the clothes, thereby achieving the aim of dehydrating the clothes.

The current washing machine is when carrying out the dehydration, and the easy appearance of the clearance of bucket and urceolus in the washing machine deposits water phenomenon, deposits the load increase that water can lead to the motor, leads to the motor current increase to lead to the temperature rising, produce the thermal protection phenomenon. The thermal protection phenomenon is that in a main circuit structure of the washing machine, a thermal sensitive electronic element is used for constructing an overheating protection circuit, when the temperature of main circuit equipment monitored by a thermal sensitive element rises to a certain value, low-melting-point metal in the main circuit equipment deforms, so that the main circuit is disconnected, and the purpose of protecting the main circuit equipment is achieved.

Therefore, the heat protection phenomenon can cause the motor to be shut down when the temperature is higher, and then normal work of the motor is influenced, so that the clothes are not thoroughly dehydrated, and the dehydration effect is poor.

The application provides a washing machine motor control method and a washing machine, and aims to solve the technical problems in the prior art. The application provides a washing machine motor control method, which is used for acquiring the real-time current of a motor after a washing machine enters a dehydration program. When the real-time current reaches the starting current of the motor, the motor is controlled to work in a first working mode so as to drive the drum in the washing machine to rotate at a first rotation amplitude. And when the real-time current is larger than the overload current of the motor, controlling the motor to work in a second working mode so as to drive the drum in the washing machine to rotate at a second rotation amplitude. And when the real-time current is greater than the starting current and less than the overload current, controlling the motor to work in a third working mode so as to drive the drum in the washing machine to rotate at a third rotation amplitude. The motor working parameters in the first working mode, the second working mode and the third working mode are different, the second rotation amplitude is smaller than the first rotation amplitude, and the second rotation amplitude is smaller than the third rotation amplitude.

In this application, when the real-time current of motor reached starting current, control motor drive cylinder rotated with first rotation amplitude. In the dehydration process, if the phenomenon appears depositing water in the inside and outside bucket clearance, can lead to the electric current increase, consequently, when real-time current is greater than overload current, control motor drive cylinder rotates with the second rotation range, because the second rotation range is less than first rotation range, deposits the centrifugal force that corresponds and reduces this moment for deposit water and can follow and get rid of in the inside and outside bucket clearance, play the effect that reduces the motor load. Correspondingly, the real-time current of the motor is reduced, and when the real-time current is greater than the starting current and less than the overload current, the motor is controlled to drive the drum to rotate at a third rotation amplitude which is greater than the second rotation amplitude so as to carry out the clothes dehydration treatment. Therefore, the water storage device can prevent the phenomenon of thermal protection caused by water storage, ensure the normal work of the motor and further ensure the dehydration effect.

The following describes the technical solutions of the present application and how to solve the above technical problems with specific embodiments. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments. Embodiments of the present application will be described below with reference to the accompanying drawings.

It is understood that the processing steps of the washing machine motor control method in the present application may be implemented by a motor control device inside the washing machine.

Fig. 1 is a schematic diagram of a washing machine motor control method provided in an embodiment of the present application, and as shown in fig. 1, the method mainly includes the following steps:

and S100, acquiring real-time current of the motor after the washing machine enters a dehydration program.

Specifically, a current detection assembly (specifically, a current detection circuit or a current detection device, for example) is disposed inside the washing machine, and the current detection assembly can detect the real-time current of the motor after the washing machine enters the dehydration process, and send the current to the motor control device.

Optionally, an analog-to-digital conversion assembly may be further disposed inside the washing machine, and a current signal sent by the current detection assembly is converted into a digital signal by the analog-to-digital conversion assembly and then transmitted to the motor control device.

And S200, when the real-time current reaches the starting current of the motor, controlling the motor to work in a first working mode so as to drive the drum in the washing machine to rotate in a first rotating amplitude.

The motor control device compares the real-time current of the motor with a preset starting current after acquiring the real-time current of the motor, and controls the motor to work in a first working mode when the real-time current reaches the starting current so as to drive a drum in the washing machine to rotate in a first rotating amplitude. At this time, the purpose of the motor control device controlling the motor to work can be considered as driving the roller to rotate.

And S300, when the real-time current is greater than the overload current of the motor, controlling the motor to work in a second working mode so as to drive the drum in the washing machine to rotate in a second rotation amplitude, wherein the overload current is greater than the starting current.

When water is easily stored in the gap between the inner barrel and the outer barrel of the washing machine, the stored water can cause the load of the motor to increase and the current of the motor to increase, so that when the real-time current is greater than the overload current of the motor, the motor control device controls the motor to work in a second working mode to drive the drum in the washing machine to rotate in a second rotation amplitude. Because the second rotation range is less than the first rotation range, the centrifugal force corresponding to the stored water is reduced, so that the stored water can be discharged from the gap between the inner barrel and the outer barrel, and the effect of reducing the load of the motor is achieved.

And S400, when the real-time current is greater than the starting current and less than the overload current, controlling the motor to work in a third working mode so as to drive the drum in the washing machine to rotate at a third rotation amplitude.

After the stored water is discharged, the load of the motor is reduced, correspondingly, the real-time current of the motor is also reduced, when the real-time current is reduced to be larger than the starting current and smaller than the overload current, the motor control device controls the motor to work in a third working mode so as to drive the drum in the washing machine to rotate in a third rotating amplitude, and the third rotating amplitude is larger than the second rotating amplitude, so that the clothes dehydration treatment can be carried out.

It is understood that the motor operating parameters in the first, second and third operating modes are different, so as to drive the drum of the washing machine to rotate at different rotation amplitudes.

The embodiment provides a control method of a motor of a washing machine, which controls the motor to drive a drum to rotate at a first rotation amplitude when the real-time current of the motor reaches the starting current. In the dehydration process, if the phenomenon appears depositing water in the inside and outside bucket clearance, can lead to the electric current increase, consequently, when real-time current is greater than overload current, control motor drive cylinder rotates with the second rotation range, because the second rotation range is less than first rotation range, deposits the centrifugal force that corresponds and reduces this moment for deposit water and can follow and get rid of in the inside and outside bucket clearance, play the effect that reduces the motor load. Correspondingly, the real-time current of the motor is reduced, and when the real-time current is greater than the starting current and less than the overload current, the motor is controlled to drive the drum to rotate at a third rotation amplitude which is greater than the second rotation amplitude so as to carry out the clothes dehydration treatment. Therefore, the water storage device can prevent the phenomenon of thermal protection caused by water storage, ensure the normal work of the motor and further ensure the dehydration effect.

In some embodiments, when the motor is a fixed frequency motor, controlling the motor to operate in a first mode of operation includes: and controlling the motor to rotate according to a working mode with the rotation duration as a first duration and the stop duration as a second duration. Wherein the first time length is greater than or equal to the time length for increasing the rotating speed of the motor from 0 to the maximum rotating speed. The value range of the second time length is a first preset time length range taking the preset stop time length as a center.

Specifically, the calculation formula of the motor rotation speed is that N is 60f/P, where N is the rotation speed of the motor, f is the power supply frequency, and P is the pole pair number of the motor. For a fixed-frequency motor, the corresponding power supply frequency f and the pole pair number P are both constant values, so the rotating speed N of the fixed-frequency motor is also constant value. Therefore, the motor control device adjusts the operation mode of the motor by controlling the rotation period and the stop period of the frequency-fixed motor.

In this embodiment, the first time length is greater than or equal to a time length for increasing the rotation speed of the motor from 0 to the maximum rotation speed, and may be, for example, 8S.

The value range of the second time length is a first preset time length range taking the preset stop time length as a center. The preset stop duration refers to an empirical value of the stop duration of the motor during normal high-speed dewatering operation. For example, when the high-speed dehydration mode of the fixed-frequency motor is "rotate 4 and stop 3 (i.e. rotate 4S and stop 3S)", the preset stop duration is 3S. The first preset time length range may be 3S ± 1S, that is, 2S to 4S. Accordingly, the second time period may be specifically 2S.

In this embodiment, the motor is controlled to rotate according to the working mode in which the rotation duration is the first duration and the stop duration is the second duration, specifically, for example, 8S rotation and 2S stop, so that it can be ensured that the motor can drive the drum to rotate, and moisture in the laundry is thrown out.

In some embodiments, controlling the motor to operate in a second mode of operation comprises: and controlling the motor to rotate according to a working mode with the rotating time length as the third time length and the stopping time length as the fourth time length. And the third time length is less than the preset rotation time length, and the preset rotation time length is less than the first time length. The value range of the fourth duration is a first preset duration range.

Specifically, the preset rotation time length refers to an empirical value of the rotation time length of the motor during normal high-speed dehydration. For example, when the high-speed dehydration mode of the fixed-frequency motor is "rotate 4 and stop 3 (i.e. rotate 4S and stop 3S)", the preset rotation time length is 4S. The third time period is less than the preset rotation time period, and the third time period may be 3S, for example.

The value range of the fourth duration is a first preset duration range, the first preset duration range is 2S to 4S, and the fourth duration may be, for example, 4S.

In this embodiment, the motor is controlled to rotate according to the working mode in which the rotation duration is the third duration and the stop duration is the fourth duration, specifically, for example, the rotation 3S and the stop 4S are performed, and compared with the rotation 8S and the stop 2S in the first working mode, the rotation amplitude of the drum can be reduced, and at this time, the centrifugal force corresponding to the stored water is reduced, so that the stored water can be removed from the gap between the inner and outer drums, and the effect of reducing the load of the motor is achieved.

In some embodiments, controlling the motor to operate in a third mode of operation includes: and controlling the motor to rotate according to a working mode with the rotating time length as the fifth time length and the stopping time length as the sixth time length. And the fifth time length is greater than the preset rotation time length and is less than the first time length. The value range of the sixth time length is a first preset time length range.

Specifically, the preset rotation time length refers to an empirical value of the rotation time length of the motor during normal high-speed dehydration. For example, when the high-speed dehydration mode of the fixed-frequency motor is "rotate 4 and stop 3 (i.e. rotate 4S and stop 3S)", the preset rotation time length is 4S. The fifth time period is longer than the preset rotation time period, and the fifth time period may be, for example, 6S.

The value range of the sixth duration is a first preset duration range, the first preset duration range is 2S to 4S, and the sixth duration may be, for example, 2S.

In this embodiment, the motor is controlled to rotate according to the operation mode with the fifth rotation duration and the sixth stop duration, specifically, for example, the rotation mode is 6S, the stop mode is 2S, and the stop mode is 4S compared with the rotation mode is 3S, so that the rotation amplitude of the drum can be increased, and the laundry dehydration treatment is facilitated.

In some embodiments, the washing machine motor control method further includes: and S510, when the real-time current is smaller than the starting current, controlling the motor to rotate according to a working mode that the rotation time length is a preset rotation time length and the stop time length is a preset stop time length.

Specifically, in the dehydration process, the moisture of the clothes is gradually reduced, the load of the motor is also gradually reduced, and correspondingly, the real-time current of the motor is also gradually reduced, so that when the real-time current is smaller than the starting current, the motor enters a high-speed dehydration working mode at the moment, and therefore, the motor can be controlled to work by adopting parameters corresponding to the high-speed dehydration working mode.

For example, when the high-speed dehydration mode of the constant-frequency motor is "rotate 4 and stop 3 (i.e., rotate 4S and stop 3S)", the preset rotation time is 4S, and the preset stop time is 3S, that is, the operation mode of the motor is set to rotate 4S and stop 3S.

In this embodiment, when the real-time current is smaller than the starting current, the motor control device controls the motor to rotate according to the working mode in which the rotation time duration is the preset rotation time duration and the stop time duration is the preset stop time duration, so as to achieve high-speed dehydration of the clothes and improve the dehydration effect of the clothes.

In some embodiments, when the motor is a variable frequency motor, controlling the motor to operate in a first operating mode comprises: the motor is controlled to rotate according to a working mode with the rotating speed being a first speed. The first speed is less than the maximum rotating speed of the motor and greater than the next gear rotating speed of the maximum rotating speed.

Specifically, the calculation formula of the motor rotation speed is that N is 60f/P, where N is the rotation speed of the motor, f is the power supply frequency, and P is the pole pair number of the motor. For the variable frequency motor, the corresponding pole pair number P is a fixed value, and the power supply frequency f is an indeterminate value, so the rotating speed N of the fixed frequency motor is also an indeterminate value. Therefore, the motor control device adjusts the working mode of the motor by controlling the rotating speed of the variable frequency motor.

In this embodiment, the first speed is less than the maximum rotational speed of the motor. The maximum rotational speed may be, for example, 700 r/min. In addition, for the washing machine motor, 100r/min is generally used as the interval of the rotation speeds of different gears, so that the next gear rotation speed of the maximum rotation speed is 600 r/min. Therefore, the first speed can take a value in the range of 600r/min to 700r/min, specifically 650r/min for example.

In this embodiment, the motor is controlled to rotate according to the operation mode with the first rotation speed, specifically, 650r/min, for example, so as to ensure that the motor can drive the drum to rotate, thereby throwing out the moisture in the laundry.

In some embodiments, controlling the motor to operate in a second mode of operation comprises: and controlling the motor to rotate according to a working mode with the rotating speed as the second speed. And the second speed is greater than the minimum rotating speed of the motor and is not more than half of the maximum rotating speed.

Specifically, the minimum rotation speed of the motor may be, for example, 200 r/min. The maximum rotation speed of the motor may be 700r/min, for example, half of the maximum rotation speed is 350r/min, that is, the value range of the second speed is 200r/min to 350r/min, and may be 300r/min, for example.

In this embodiment, the motor is controlled to rotate according to the working mode with the second rotation speed, specifically, for example, 300r/min, and compared with the first working mode with the rotation speed of 650r/min, the rotation amplitude of the drum can be reduced, and the centrifugal force corresponding to the stored water is reduced, so that the stored water can be removed from the gap between the inner and outer drums, thereby reducing the load of the motor.

In some embodiments, controlling the motor to operate in a third mode of operation includes: and controlling the motor to rotate according to a working mode with the rotating speed being a third speed. Wherein the third speed is greater than half of the maximum rotational speed and less than the maximum rotational speed.

The maximum rotation speed may be 700r/min, for example, half of the maximum rotation speed is 350r/min, that is, the third speed may have a value ranging from 350r/min to 700r/min, and may be 500r/min, for example.

In this embodiment, by controlling the motor to rotate according to the operation mode with the third rotation speed, specifically, for example, 500r/min, compared with the second operation mode with the rotation speed of 300r/min, the rotation amplitude of the drum can be increased, thereby facilitating the laundry dehydration process.

In some embodiments, the washing machine motor control method further includes: and S520, when the real-time current is smaller than the starting current, controlling the motor to rotate according to the working mode with the rotating speed being the maximum rotating speed.

Specifically, in the dehydration process, the moisture of the clothes is gradually reduced, the load of the motor is also gradually reduced, and correspondingly, the real-time current of the motor is also gradually reduced, so that when the real-time current is smaller than the starting current, the motor enters a high-speed dehydration working mode at the moment, and therefore, the motor can be controlled to work by adopting parameters corresponding to the high-speed dehydration working mode.

For example, when the high-speed dehydration mode of the inverter motor is that the rotation speed is the maximum rotation speed, the maximum rotation speed may be 700r/min, that is, the operation mode of the motor is set to be that the rotation speed is 700 r/min.

In this embodiment, when the real-time current is smaller than the starting current, the motor control device controls the motor to rotate according to the working mode in which the rotation speed is the maximum rotation speed, so as to achieve high-speed dehydration of the clothes and improve the dehydration effect of the clothes.

In one embodiment, an overall flow of the motor control device controlling the operation of the motor is explained.

Fig. 2 is a schematic diagram of an overall process of the motor control device controlling the operation of the motor according to the embodiment of the present application, and as shown in fig. 2, the overall process of the motor control device controlling the operation of the motor may include four stages T1 to T4.

Stage T1: and in the starting stage, after the washing machine enters a dehydration process, when the real-time current I reaches the starting current I1 of the motor, if the motor is a constant-frequency motor, the motor is controlled to rotate for a first time period t1 and stop for a second time period t2, for example, the rotation is 8S, and the stop is 2S. If the motor is a variable frequency motor, the motor is controlled to rotate at a first speed v1, for example 650 r/min.

In the stage T1, the motor drives the drum to rotate, dewatering begins, and water storage between the inner and outer barrels is increased.

Stage T2: in the continuous dehydration stage, the motor load is increased due to the increase of water storage, so that the real-time current I is increased. When the real-time current I is greater than the overload current I2, if the motor is a fixed-frequency motor, the motor is controlled to rotate for a third time period t3 and stop for a fourth time period t4, for example, rotate for 3S and stop for 4S. If the motor is a variable frequency motor, the motor is controlled to rotate at a second speed v2, for example 300 r/min.

During the period T2, the rotation amplitude of the drum is reduced to facilitate the discharge of the stored water, so that the stored water is reduced.

Stage T3: and in the stage of discharging the stored water, the load of a motor is reduced due to the reduction of the stored water, so that the real-time current I is reduced. When the real-time current I is greater than the starting current I1 and less than the overload current I2, if the motor is a fixed-frequency motor, the motor is controlled to rotate for a fifth time period t5 and stop for a sixth time period t6, for example, rotate for 6S and stop for 2S. If the motor is a variable frequency motor, the motor is controlled to rotate at a third speed v3, for example, 500 r/min.

During the period T3, the stored water is gradually discharged and the motor load is reduced.

Stage T4: in the high-speed dehydration stage, the stored water is basically discharged through the stage T3, and at this time, high-speed water discharge can be performed. At this time, the real-time current I is smaller than the starting current I1, and if the motor is a fixed-frequency motor, the motor is controlled to rotate for a preset rotation time period t7 and stop for a preset stop time period t8, for example, rotate for 4S and stop for 3S. If the motor is a variable frequency motor, the motor is controlled to rotate at a maximum rotation speed vmax, for example 700 r/min.

In the stage T4, high-speed dehydration of the clothes is realized, and the dehydration effect of the clothes is improved.

It should be understood that, although the respective steps in the flowcharts in the above-described embodiments are sequentially shown as indicated by arrows, the steps are not necessarily performed sequentially as indicated by the arrows. The steps are not performed in the exact order shown and may be performed in other orders unless explicitly stated herein. Moreover, at least some of the steps in the figures may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, in different orders, and may be performed alternately or at least partially with respect to other steps or sub-steps of other steps.

In one embodiment, a washing machine motor control apparatus is provided.

Fig. 3 is a schematic diagram of a control device of a washing machine according to an embodiment of the present application, as shown in fig. 3, the control device includes:

the current obtaining module 100 is configured to obtain a real-time current of the motor after the washing machine enters the dehydration procedure.

And a motor control module 200 for controlling the motor to operate in a first operation mode when the real-time current reaches a starting current of the motor, so as to drive the drum in the washing machine to rotate at a first rotation amplitude. And when the real-time current is larger than the overload current of the motor, controlling the motor to work in a second working mode so as to drive the drum in the washing machine to rotate at a second rotation amplitude. And when the real-time current is greater than the starting current and less than the overload current, controlling the motor to work in a third working mode so as to drive the drum in the washing machine to rotate at a third rotation amplitude. The motor working parameters in the first working mode, the second working mode and the third working mode are different, the second rotation amplitude is smaller than the first rotation amplitude, and the second rotation amplitude is smaller than the third rotation amplitude.

For specific limitations of the control device of the washing machine motor, reference may be made to the above limitations of the control method of the washing machine motor, which are not described herein again. The respective modules in the above-described washing machine motor control apparatus may be wholly or partially implemented by software, hardware, and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.

The application provides a washing machine motor control device, when the real-time current of motor reaches starting current, control motor drive cylinder and rotate with first rotation amplitude. In the dehydration process, if the phenomenon appears depositing water in the inside and outside bucket clearance, can lead to the electric current increase, consequently, when real-time current is greater than overload current, control motor drive cylinder rotates with the second rotation range, because the second rotation range is less than first rotation range, deposits the centrifugal force that corresponds and reduces this moment for deposit water and can follow and get rid of in the inside and outside bucket clearance, play the effect that reduces the motor load. Correspondingly, the real-time current of the motor is reduced, and when the real-time current is greater than the starting current and less than the overload current, the motor is controlled to drive the drum to rotate at a third rotation amplitude which is greater than the second rotation amplitude so as to carry out the clothes dehydration treatment. Therefore, the water storage device can prevent the phenomenon of thermal protection caused by water storage, ensure the normal work of the motor and further ensure the dehydration effect.

In some embodiments, a washing machine is provided.

Fig. 4 is a schematic view of a washing machine 10 according to an embodiment of the present application, and as shown in fig. 4, the washing machine includes:

and a motor 11 for driving the drum in the washing machine to rotate.

And a current detection assembly 12 for detecting a real-time current of the motor after the washing machine enters a dehydration process.

And the control board 13 is used for acquiring the real-time current of the motor. When the real-time current reaches the starting current of the motor, the motor is controlled to work in a first working mode so as to drive the drum in the washing machine to rotate at a first rotation amplitude. And when the real-time current is larger than the overload current of the motor, controlling the motor to work in a second working mode so as to drive the drum in the washing machine to rotate at a second rotation amplitude. And when the real-time current is greater than the starting current and less than the overload current, controlling the motor to work in a third working mode so as to drive the drum in the washing machine to rotate at a third rotation amplitude. The motor working parameters in the first working mode, the second working mode and the third working mode are different, the second rotation amplitude is smaller than the first rotation amplitude, and the second rotation amplitude is smaller than the third rotation amplitude.

The control board is further configured to perform the steps in the above method embodiments of the present application.

In this application, when the real-time current of motor reached starting current, control motor drive cylinder rotated with first rotation amplitude. In the dehydration process, if the phenomenon appears depositing water in the inside and outside bucket clearance, can lead to the electric current increase, consequently, when real-time current is greater than overload current, control motor drive cylinder rotates with the second rotation range, because the second rotation range is less than first rotation range, deposits the centrifugal force that corresponds and reduces this moment for deposit water and can follow and get rid of in the inside and outside bucket clearance, play the effect that reduces the motor load. Correspondingly, the real-time current of the motor is reduced, and when the real-time current is greater than the starting current and less than the overload current, the motor is controlled to drive the drum to rotate at a third rotation amplitude which is greater than the second rotation amplitude so as to carry out the clothes dehydration treatment. Therefore, the water storage device can prevent the phenomenon of thermal protection caused by water storage, ensure the normal work of the motor and further ensure the dehydration effect.

In one embodiment, a computer-readable storage medium having stored thereon computer-executable instructions for performing the steps of the method embodiments of the present application when executed by a processor is provided.

It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware related to instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, the computer program can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

Other embodiments of the present disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. A washing machine motor control method, comprising:

after the washing machine enters a dehydration program, acquiring the real-time current of a motor;

when the real-time current reaches the starting current of the motor, controlling the motor to work in a first working mode so as to drive a drum in the washing machine to rotate at a first rotation amplitude;

when the real-time current is greater than the overload current of the motor, controlling the motor to work in a second working mode so as to drive a drum in the washing machine to rotate at a second rotation amplitude, wherein the overload current is greater than the starting current;

when the real-time current is greater than the starting current and less than the overload current, controlling the motor to work in a third working mode so as to drive a drum in the washing machine to rotate at a third rotation amplitude;

the motor working parameters in the first working mode, the second working mode and the third working mode are different, the second rotation amplitude is smaller than the first rotation amplitude, and the second rotation amplitude is smaller than the third rotation amplitude.

2. The method of claim 1, wherein said controlling said motor to operate in a first mode of operation when said motor is a fixed frequency motor comprises:

controlling the motor to rotate according to a working mode with the rotation duration as a first duration and the stop duration as a second duration;

wherein the first time length is greater than or equal to a time length for which the rotation speed of the motor is increased from 0 to a maximum rotation speed;

the value range of the second time length is a first preset time length range taking a preset stop time length as a center.

3. The method of claim 2, wherein said controlling said motor to operate in a second mode of operation comprises:

controlling the motor to rotate according to a working mode with the rotation duration as a third duration and the stop duration as a fourth duration;

wherein the third time length is less than a preset rotation time length, and the preset rotation time length is less than the first time length;

and the value range of the fourth time length is the first preset time length range.

4. The method of claim 3, wherein said controlling said motor to operate in a third mode of operation comprises:

controlling the motor to rotate according to a working mode with the rotating time length as a fifth time length and the stopping time length as a sixth time length;

the fifth time length is longer than the preset rotation time length and shorter than the first time length;

and the value range of the sixth time length is the first preset time length range.

5. The method of any of claims 2 to 4, further comprising:

and when the real-time current is smaller than the starting current, controlling the motor to rotate according to a working mode that the rotation time length is a preset rotation time length and the stop time length is a preset stop time length.

6. The method of claim 1, wherein when the motor is an inverter motor, the controlling the motor to operate in a first mode of operation comprises:

controlling the motor to rotate according to a working mode with the rotating speed being a first speed;

the first speed is smaller than the maximum rotating speed of the motor and is larger than the next gear rotating speed of the maximum rotating speed.

7. The method of claim 6, wherein said controlling said motor to operate in a second mode of operation comprises:

controlling the motor to rotate according to a working mode with the rotating speed as a second speed;

wherein the second speed is greater than a minimum rotational speed of the motor and no more than half of the maximum rotational speed.

8. The method of claim 7, wherein said controlling said motor to operate in a third mode of operation comprises:

controlling the motor to rotate according to a working mode with the rotating speed being a third speed;

wherein the third speed is greater than half of the maximum rotational speed and less than the maximum rotational speed.

9. The method of any of claims 6 to 8, further comprising:

and when the real-time current is less than the starting current, controlling the motor to rotate according to a working mode with the rotating speed being the maximum rotating speed.

10. A washing machine, characterized by comprising:

a motor for driving the drum in the washing machine to rotate;

the current detection assembly is used for detecting the real-time current of the motor after the washing machine enters a dehydration procedure;

the control panel is used for acquiring the real-time current of the motor; when the real-time current reaches the starting current of the motor, controlling the motor to work in a first working mode so as to drive a drum in the washing machine to rotate at a first rotation amplitude; when the real-time current is larger than the overload current of the motor, controlling the motor to work in a second working mode so as to drive a drum in the washing machine to rotate at a second rotation amplitude; when the real-time current is greater than the starting current and less than the overload current, controlling the motor to work in a third working mode so as to drive a drum in the washing machine to rotate at a third rotation amplitude; the motor working parameters in the first working mode, the second working mode and the third working mode are different, the second rotation amplitude is smaller than the first rotation amplitude, and the second rotation amplitude is smaller than the third rotation amplitude.

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