Washing machine motor control method and washing machine

Abstract

The present application provides a washing machine motor control method and a washing machine. When the real-time current of the motor reaches the starting current, the motor is controlled to drive the drum to rotate at a first rotation amplitude. During the dehydration process, if water is stored in the gap between the inner and outer barrels, the current will increase. Therefore, when the real-time current is greater than the overload current, the motor is controlled to drive the drum to rotate at a second rotation amplitude. Since the second rotation amplitude is less than the first rotation amplitude, the centrifugal force corresponding to the water storage is reduced at this time, so that the water storage can be removed from the gap between the inner and outer barrels, which plays a role in reducing the motor load. Correspondingly, the real-time current of the motor is also reduced. 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 greater than the second rotation amplitude to perform clothing dehydration. Therefore, the present application can prevent the occurrence of thermal protection caused by water storage, ensure the normal operation of the motor, and then ensure the dehydration effect.

Description

Technical Field

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

[0002] A washing machine is a common household appliance, which usually has functions such as washing and dehydrating clothes.

[0003] When the washing machine is dehydrating clothes, the motor inside the washing machine drives the drum of the washing machine to rotate at a high speed to throw out most of the water in the clothes, thereby achieving the purpose of dehydrating the clothes.

[0004] When a current washing machine is dehydrating, water is easily accumulated in the gap between the inner and outer drums of the washing machine. The accumulated water will increase the load on the motor and the motor current, thereby causing thermal protection, which in turn affects the normal operation of the motor, resulting in incomplete dehydration of the clothes and poor dehydration effect. Summary of the invention

[0005] The present application provides a washing machine motor control method and a washing machine, which are used to solve the problem in the prior art that the motor current increases due to water accumulation, which ultimately leads to incomplete dehydration of clothes and poor dehydration effect.

[0006] In one aspect, the present application provides a washing machine motor control method, comprising:

[0007] After the washing machine enters the dehydration program, obtain the real-time current of the motor;

[0008] When the real-time current reaches the starting current of the motor, controlling the motor to operate in a first operating mode to drive the drum in the washing machine to rotate at a first rotation amplitude;

[0009] When the real-time current is greater than the overload current of the motor, controlling the motor to operate in a second operating mode to drive the drum in the washing machine to rotate at a second rotation amplitude;

[0010] When the real-time current is greater than the starting current and less than the overload current, controlling the motor to operate in a third operating mode to drive the drum in the washing machine to rotate at a third rotation amplitude;

[0011] The motor operating parameters in the first operating mode, the second operating mode and the third operating 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.

[0012] In some embodiments, when the motor is a fixed-frequency motor, controlling the motor to operate in a first operating mode includes:

[0013] Control the motor to rotate according to a working mode in which the rotation time is a first time length and the stop time is a second time length;

[0014] Wherein, the first time duration is greater than or equal to the time duration for the speed of the motor to increase from 0 to the maximum speed;

[0015] The value range of the second duration is a first preset duration range centered on the preset stop duration.

[0016] In some embodiments, controlling the motor to operate in the second operating mode includes:

[0017] Controlling the motor to rotate according to a working mode in which the rotation time is a third time length and the stop time is a fourth time length;

[0018] Wherein, the third duration is shorter than the preset rotation duration, and the preset rotation duration is shorter than the first duration;

[0019] The value range of the fourth duration is the first preset duration range.

[0020] In some embodiments, controlling the motor to operate in a third operating mode includes:

[0021] Controlling the motor to rotate according to a working mode in which the rotation time is a fifth time length and the stop time is a sixth time length;

[0022] Wherein, the fifth duration is greater than the preset rotation duration and less than the first duration;

[0023] The value range of the sixth duration is the first preset duration range.

[0024] In some embodiments, it also includes:

[0025] When the real-time current is less than the starting current, the motor is controlled to rotate according to a working mode in which the rotation time is a preset rotation time and the stop time is a preset stop time.

[0026] In some embodiments, when the motor is a variable frequency motor, controlling the motor to operate in a first operating mode includes:

[0027] Controlling the motor to rotate in a working mode with a first speed;

[0028] The first speed is less than the maximum speed of the motor and greater than the next speed of the maximum speed.

[0029] In some embodiments, controlling the motor to operate in the second operating mode includes:

[0030] Controlling the motor to rotate in a working mode with a rotation speed of a second speed;

[0031] The second speed is greater than the minimum speed of the motor and does not exceed half of the maximum speed.

[0032] In some embodiments, controlling the motor to operate in a third operating mode includes:

[0033] Controlling the motor to rotate in a working mode with a rotation speed of a third speed;

[0034] The third speed is greater than half of the maximum speed and less than the maximum speed.

[0035] In some embodiments, it also includes:

[0036] When the real-time current is less than the starting current, the motor is controlled to rotate in a working mode with a maximum rotation speed.

[0037] On the other hand, the present application provides a washing machine motor control device, comprising:

[0038] The current acquisition module is used to obtain the real-time current of the motor after the washing machine enters the dehydration program;

[0039] A motor control module, used to control the motor to operate in a first working mode to drive the drum in the washing machine to rotate at a first rotation amplitude when the real-time current reaches the starting current of the motor; to control the motor to operate in a second working mode to drive the drum in the washing machine to rotate at a second rotation amplitude when the real-time current is greater than the overload current of the motor; to control the motor to operate in a third working mode to drive the drum in the washing machine to rotate at a third rotation amplitude when the real-time current is greater than the starting current and less than the overload current; wherein the motor operating 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.

[0040] On the other hand, the present application provides a washing machine, characterized by comprising:

[0041] A motor, used to drive the drum in the washing machine;

[0042] A current detection component, used for detecting the real-time current of the motor after the washing machine enters the dehydration program;

[0043] A control panel is used to obtain the real-time current of the motor; when the real-time current reaches the starting current of the motor, the motor is controlled to operate in a first working mode to drive the 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, the motor is controlled to operate in a second working mode 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, the motor is controlled to operate in a third working mode to drive the drum in the washing machine to rotate at a third rotation amplitude; wherein the motor operating 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.

[0044] On the other hand, the present application provides a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement the above-mentioned washing machine motor control method.

[0045] The present application provides a washing machine motor control method and a washing machine, the method comprising: obtaining the real-time current of the motor after the washing machine enters the dehydration program; when the real-time current reaches the starting current of the motor, controlling the motor to operate in a first working mode to drive the 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 operate in a second working mode 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 operate in a third working mode to drive the drum in the washing machine to rotate at a third rotation amplitude; wherein the motor operating 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 present application, when the real-time current of the motor reaches the starting current, the motor is controlled to drive the drum to rotate at the first rotation amplitude; during the dehydration process, if water is stored in the gap between the inner and outer barrels, the current will increase. Therefore, when the real-time current is greater than the overload current, the motor is controlled to drive the drum to rotate at the second rotation amplitude. Since the second rotation amplitude is smaller than the first rotation amplitude, the centrifugal force corresponding to the water storage is reduced at this time, so that the water storage can be removed from the gap between the inner and outer barrels, which plays a role in reducing the motor load; correspondingly, the real-time current of the motor is also reduced. 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 greater than the second rotation amplitude to perform clothing dehydration. Therefore, the present application can prevent the occurrence of thermal protection caused by water storage, ensure the normal operation of the motor, and then ensure the dehydration effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] 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 present disclosure.

[0047] Figure 1 A schematic diagram of a washing machine motor control method provided in an embodiment of the present application;

[0048] Figure 2 A schematic diagram of the overall process of controlling the operation of a motor by a motor control device in an embodiment of the present application;

[0049] Figure 3 A schematic diagram of a washing machine motor control device provided in an embodiment of the present application;

[0050] Figure 4 A schematic diagram of a washing machine 10 provided in an embodiment of the present application.

[0051] The above drawings show clear embodiments of the present disclosure, which will be described in more detail below. These drawings and text descriptions are not intended to limit the scope of the present disclosure in any way, but to illustrate the concepts of the present disclosure to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0053] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "an" and "the" used in the embodiments of the present application are also intended to include plural forms, unless the context clearly indicates other meanings.

[0054] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0055] As used herein, the words "if" and "if" may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0056] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such a product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0057] When the washing machine is dehydrating clothes, the motor inside the washing machine drives the drum of the washing machine to rotate at a high speed to throw out most of the water in the clothes, thereby achieving the purpose of dehydrating the clothes.

[0058] When the current washing machine is dehydrating, water is easily accumulated in the gap between the inner and outer drums of the washing machine. The accumulated water will increase the load on the motor, increase the motor current, and thus increase the temperature, resulting in thermal protection. The thermal protection phenomenon specifically refers to the use of heat-sensitive electronic components to form an overheating protection circuit in the main circuit structure of the washing machine. When the thermistor detects that the temperature of the main circuit equipment has risen to a certain value, the low-melting-point metal inside it will deform, thereby disconnecting the main circuit and protecting the main circuit equipment.

[0059] Therefore, the thermal protection phenomenon will cause the motor to shut down when the temperature is high, thereby affecting the normal operation of the motor, resulting in incomplete dehydration of clothes and poor dehydration effect.

[0060] The washing machine motor control method and washing machine provided in the present application are intended to solve the above technical problems of the prior art. The present application provides a washing machine motor control method, which obtains the real-time current of the motor after the washing machine enters the dehydration program. When the real-time current reaches the starting current of the motor, the motor is controlled to work in the first working mode to drive the drum in the washing machine to rotate with a first rotation amplitude. When the real-time current is greater than the overload current of the motor, the motor is controlled to work in the second working mode to drive the drum in the washing machine to rotate with a second rotation amplitude. When the real-time current is greater than the starting current and less than the overload current, the motor is controlled to work in the third working mode to drive the drum in the washing machine to rotate with a third rotation amplitude. Among them, 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.

[0061] In the present application, when the real-time current of the motor reaches the starting current, the motor is controlled to drive the drum to rotate at a first rotation amplitude. During the dehydration process, if water accumulates in the gap between the inner and outer barrels, the current will increase. Therefore, when the real-time current is greater than the overload current, the motor is controlled to drive the drum to rotate at a second rotation amplitude. Since the second rotation amplitude is smaller than the first rotation amplitude, the centrifugal force corresponding to the water accumulation is reduced at this time, so that the water accumulation can be removed from the gap between the inner and outer barrels, thereby reducing the motor load. Correspondingly, the real-time current of the motor also decreases. 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 greater than the second rotation amplitude to dehydrate the clothes. Thus, the present application can prevent the occurrence of thermal protection caused by water accumulation, ensure the normal operation of the motor, and further ensure the dehydration effect.

[0062] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0063] It can be understood that the processing steps of the washing machine motor control method in the present application can be implemented by a motor control device inside the washing machine.

[0064] Figure 1 A schematic diagram of a washing machine motor control method provided in an embodiment of the present application is shown in FIG. Figure 1 As shown, the method mainly includes the following steps:

[0065] S100: After the washing machine enters the dehydration program, the real-time current of the motor is obtained.

[0066] Specifically, a current detection component (such as a current detection circuit or a current detection device, etc.) is provided inside the washing machine. The current detection component can detect the real-time current of the motor after the washing machine enters the dehydration program and send it to the motor control device.

[0067] Optionally, an analog-to-digital conversion component may be provided inside the washing machine, and the current signal sent by the current detection component is converted into a digital signal via the analog-to-digital conversion component and then transmitted to the motor control device.

[0068] S200. When the real-time current reaches the starting current of the motor, the motor is controlled to operate in a first operating mode to drive the drum in the washing machine to rotate at a first rotation amplitude.

[0069] After obtaining the real-time current of the motor, the motor control device compares the real-time current of the motor with the preset starting current. When the real-time current reaches the starting current, the motor control device controls the motor to operate in the first operating mode to drive the drum in the washing machine to rotate at the first rotation amplitude. At this time, the purpose of the motor control device controlling the motor to operate can be considered to drive the drum to rotate.

[0070] S300, when the real-time current is greater than the overload current of the motor, the motor is controlled to operate in a second operating mode to drive the drum in the washing machine to rotate at a second rotation amplitude, and the overload current is greater than the starting current.

[0071] When water is easily accumulated in the gap between the inner drum and the outer drum of the washing machine, the accumulated water will increase the load of the motor and the motor current. Therefore, when the real-time current is greater than the overload current of the motor, the motor control device controls the motor to work in the second working mode to drive the drum in the washing machine to rotate with a second rotation amplitude. Since the second rotation amplitude is smaller than the first rotation amplitude, the centrifugal force corresponding to the accumulated water is reduced at this time, so that the accumulated water can be discharged from the gap between the inner and outer drums, thereby reducing the load on the motor.

[0072] S400: When the real-time current is greater than the starting current and less than the overload current, the motor is controlled to operate in a third operating mode to drive the drum in the washing machine to rotate in a third rotation amplitude.

[0073] After the accumulated water is drained, the load of the motor is reduced, and accordingly, the real-time current of the motor is also reduced. When the real-time current is reduced to be greater than the starting current and less than the overload current, the motor control device controls the motor to operate in the third working mode to drive the drum in the washing machine to rotate with a third rotation amplitude. Since the third rotation amplitude is greater than the second rotation amplitude, the clothes can be dehydrated.

[0074] It can be understood that the operating parameters of the motor in the first operating mode, the second operating mode and the third operating mode are different, thereby driving the drum in the washing machine to rotate with different rotation amplitudes.

[0075] This embodiment provides a washing machine motor control method, when the real-time current of the motor reaches the starting current, the motor is controlled to drive the drum to rotate at a first rotation amplitude. During the dehydration process, if water accumulates in the gap between the inner and outer barrels, the current will increase. Therefore, when the real-time current is greater than the overload current, the motor is controlled to drive the drum to rotate at a second rotation amplitude. Since the second rotation amplitude is smaller than the first rotation amplitude, the centrifugal force corresponding to the water accumulation is reduced at this time, so that the water accumulation can be removed from the gap between the inner and outer barrels, which plays a role in reducing the motor load. Correspondingly, the real-time current of the motor also decreases accordingly. 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 greater than the second rotation amplitude to perform clothing dehydration. Therefore, the present application can prevent the occurrence of thermal protection caused by water accumulation, ensure the normal operation of the motor, and further ensure the dehydration effect.

[0076] In some embodiments, when the motor is a fixed frequency motor, controlling the motor to work in a first working mode includes: controlling the motor to rotate in a working mode in which the rotation time is a first time length and the stop time is a second time length. The first time length is greater than or equal to the time length for the motor speed to increase from 0 to the maximum speed. The value range of the second time length is the first preset time length range centered on the preset stop time length.

[0077] Specifically, the calculation formula for the motor speed is N=60f / P, where N is the motor speed, f is the power supply frequency, and P is the number of pole pairs of the motor. For a fixed-frequency motor, the corresponding power supply frequency f and the number of pole pairs P are both fixed values, so the speed N of the fixed-frequency motor is also a fixed value. Therefore, the motor control device adjusts the working mode of the motor by controlling the rotation time and stop time of the fixed-frequency motor.

[0078] In this embodiment, the first time duration is greater than or equal to the time duration for the rotation speed of the motor to increase from 0 to the maximum rotation speed, and specifically may be 8S, for example.

[0079] The value range of the second duration is the first preset duration range centered on the preset stop duration. The preset stop duration refers to the empirical value of the stop duration of the motor when it is performing normal high-speed dehydration work. For example, when the high-speed dehydration working mode of the fixed-frequency motor is "turn 4 and stop 3 (i.e., turn for 4s and stop for 3s)", the preset stop duration is 3s. The first preset duration range can specifically be 3s±1s, i.e., 2s to 4s. Correspondingly, the second duration can specifically be 2s.

[0080] In this embodiment, the motor is controlled to rotate according to an operating mode in which the rotation time is a first time length and the stop time is a second time length, for example, rotating for 8S and stopping for 2S, so that the motor can drive the drum to rotate, thereby shaking out the moisture in the clothes.

[0081] In some embodiments, controlling the motor to work in the second working mode includes: controlling the motor to rotate according to a working mode in which the rotation time is a third time and the stop time is a fourth time. The third time is less than the preset rotation time, and the preset rotation time is less than the first time. The value range of the fourth time is the range of the first preset time.

[0082] Specifically, the preset rotation time refers to the empirical value of the rotation time of the motor when it is normally performing high-speed dehydration. For example, when the high-speed dehydration working mode of the fixed-frequency motor is "rotate 4 and stop 3 (i.e. rotate for 4 seconds and stop for 3 seconds)", the preset rotation time is 4 seconds. The third time is less than the preset rotation time, and the third time can be 3 seconds, for example.

[0083] The value range of the fourth duration is within the range of the first preset duration, the first preset duration range is 2S to 4S, and the fourth duration may specifically be, for example, 4S.

[0084] In this embodiment, the motor is controlled to rotate according to an operating mode in which the rotation time is the third time length and the stop time is the fourth time length, specifically, rotating for 3S and stopping for 4S, compared with the first operating mode of rotating for 8S and stopping for 2S, the rotation amplitude of the drum can be reduced. At this time, the centrifugal force corresponding to the stored water is reduced, so that the stored water can be discharged from the gap between the inner and outer barrels, thereby reducing the load on the motor.

[0085] In some embodiments, controlling the motor to work in the third working mode includes: controlling the motor to rotate according to a working mode in which the rotation duration is a fifth duration and the stop duration is a sixth duration. The fifth duration is greater than the preset rotation duration and less than the first duration. The value range of the sixth duration is the range of the first preset duration.

[0086] Specifically, the preset rotation time refers to the empirical value of the rotation time of the motor when it is normally performing high-speed dehydration. For example, when the high-speed dehydration working mode of the fixed-frequency motor is "4 turns and 3 stops (i.e., rotation for 4 seconds and stop for 3 seconds)", the preset rotation time is 4 seconds. The fifth time is greater than the preset rotation time, and the fifth time can be 6 seconds, etc.

[0087] The value range of the sixth duration is the first preset duration range, the first preset duration range is 2S to 4S, and the sixth duration may specifically be 2S, for example.

[0088] In this embodiment, the motor is controlled to rotate according to an operating mode in which the rotation time is the fifth time length and the stop time is the sixth time length, for example, rotating for 6S and stopping for 2S, compared with the second operating mode of rotating for 3S and stopping for 4S, the rotation amplitude of the drum can be increased, thereby facilitating the dehydration of clothes.

[0089] In some embodiments, the washing machine motor control method further includes: S510, when the real-time current is less than the starting current, controlling the motor to rotate according to an operating mode in which the rotation time is a preset rotation time and the stop time is a preset stop time.

[0090] Specifically, during the dehydration process, the moisture content of the clothes gradually decreases, the load of the motor gradually decreases, and accordingly, the real-time current of the motor gradually decreases. Therefore, when the real-time current is less than the starting current, it means that the motor enters the high-speed dehydration working mode. Therefore, the parameters corresponding to the high-speed dehydration working mode can be used to control the motor operation.

[0091] For example, when the high-speed dehydration working mode of the fixed-frequency motor is "turn 4 and stop 3 (i.e., rotate for 4 seconds and stop for 3 seconds)", the preset rotation time is 4S, and the preset stop time is 3S, that is, the working mode of the motor is set to rotate for 4S and stop for 3S.

[0092] In this embodiment, when the real-time current is less than the starting current, the motor control device controls the motor to rotate according to an operating mode in which the rotation time is a preset rotation time and the stop time is a preset stop time, thereby achieving high-speed dehydration of clothes and improving the dehydration effect of clothes.

[0093] In some embodiments, when the motor is a variable frequency motor, controlling the motor to operate in a first operating mode includes: controlling the motor to rotate in an operating mode with a rotation speed of a first speed, wherein the first speed is less than the maximum rotation speed of the motor and greater than the next gear rotation speed of the maximum rotation speed.

[0094] Specifically, the formula for calculating the motor speed is N=60f / P, where N is the motor speed, f is the power supply frequency, and P is the number of pole pairs of the motor. For variable frequency motors, the corresponding number of pole pairs P is a constant value, while the power supply frequency f is a non-constant value. Therefore, the speed N of the fixed frequency motor is also a non-constant value. Therefore, the motor control device adjusts the working mode of the motor by controlling the rotation speed of the variable frequency motor.

[0095] In this embodiment, the first speed is less than the maximum speed of the motor. The maximum speed may be, for example, 700 r / min. In addition, for a washing machine motor, 100 r / min is usually used as the interval of the speed of different gears, so that the next gear speed of the maximum speed is 600 r / min. Therefore, the value range of the first speed is 600 r / min to 700 r / min, and may be, for example, 650 r / min.

[0096] In this embodiment, the motor is controlled to rotate in a working mode with a first speed, such as 650 r / min, so as to ensure that the motor can drive the drum to rotate, thereby shaking out the moisture in the clothes.

[0097] In some embodiments, controlling the motor to operate in the second operating mode includes: controlling the motor to rotate in an operating mode with a rotation speed of a second speed, wherein the second speed is greater than a minimum rotation speed of the motor and does not exceed half of a maximum rotation speed.

[0098] Specifically, the minimum speed of the motor may be, for example, 200 r / min, the maximum speed of the motor may be, for example, 700 r / min, and half of the maximum speed is 350 r / min, that is, the value range of the second speed is 200 r / min to 350 r / min, and specifically, for example, may be 300 r / min.

[0099] In this embodiment, the motor is controlled to rotate in an operating mode with a second speed, for example 300r / min. Compared with the first operating mode with a rotation speed of 650r / min, the rotation amplitude of the drum can be reduced. At this time, the centrifugal force corresponding to the stored water is reduced, so that the stored water can be discharged from the gap between the inner and outer barrels, thereby reducing the motor load.

[0100] In some embodiments, controlling the motor to operate in the third operating mode includes: controlling the motor to rotate in an operating mode with a rotation speed of a third speed, wherein the third speed is greater than half of the maximum rotation speed and less than the maximum rotation speed.

[0101] The maximum speed may be, for example, 700 r / min, and half of the maximum speed is 350 r / min, that is, the value range of the third speed is 350 r / min to 700 r / min, and specifically may be 500 r / min, for example.

[0102] In this embodiment, by controlling the motor to rotate in the working mode with a third speed, for example 500r / min, compared with the second working mode with a rotation speed of 300r / min, the rotation amplitude of the drum can be increased, thereby facilitating the dehydration of clothes.

[0103] In some embodiments, the washing machine motor control method further includes: S520, when the real-time current is less than the starting current, controlling the motor to rotate in a working mode with a maximum rotation speed.

[0104] Specifically, during the dehydration process, the moisture content of the clothes gradually decreases, the load of the motor gradually decreases, and accordingly, the real-time current of the motor gradually decreases. Therefore, when the real-time current is less than the starting current, it means that the motor enters the high-speed dehydration working mode. Therefore, the parameters corresponding to the high-speed dehydration working mode can be used to control the motor operation.

[0105] For example, when the high-speed dehydration working mode of the variable frequency motor is a maximum rotation speed, the maximum rotation speed may be 700 r / min, that is, the working mode of the motor is set to a rotation speed of 700 r / min.

[0106] In this embodiment, when the real-time current is less than the starting current, the motor control device controls the motor to rotate in a working mode with a maximum rotation speed, thereby achieving high-speed dehydration of the clothes and improving the dehydration effect of the clothes.

[0107] In one embodiment, the overall process of controlling the operation of a motor by a motor control device is explained.

[0108] Figure 2 FIG. 1 is a schematic diagram of the overall process of controlling the motor operation by the motor control device in the embodiment of the present application. Figure 2 As shown, the overall process of the motor control device controlling the motor operation may include four stages T1 to T4.

[0109] Phase T1: Startup phase. After the washing machine enters the dehydration program, when the real-time current I reaches the motor's starting current I1, if the motor is a fixed-frequency motor, the motor is controlled to rotate for the first time t1 and stop for the second time t2, for example, rotating for 8S and stopping for 2S. If the motor is a variable-frequency motor, the motor is controlled to rotate at the first speed v1, for example, 650r / min.

[0110] In the T1 stage, the motor drives the drum to rotate, dehydration begins, and the amount of water stored between the inner and outer barrels increases.

[0111] Stage T2: Continuous dehydration stage, due to the increase of water storage, the motor load increases, resulting in an increase in the real-time current I. 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 the third time t3 and stop for the fourth time 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 the second speed v2, for example, 300r / min.

[0112] In stage T2, the rotation amplitude of the drum is reduced to facilitate the discharge of the accumulated water, thereby reducing the accumulated water.

[0113] Phase T3: Water discharge phase, as the water is reduced, the motor load is reduced, resulting in a decrease in the real-time current I. 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 the fifth time t5 and stop for the sixth time t6, for example, rotating for 6S and stopping for 2S. If the motor is a variable-frequency motor, the motor is controlled to rotate at the third speed v3, for example, 500r / min.

[0114] In stage T3, the stored water is gradually discharged and the motor load is reduced.

[0115] Stage T4: High-speed dehydration stage. After stage T3, the water is basically drained, and high-speed drainage can be performed. At this time, the real-time current I is less than the starting current I1. If the motor is a fixed-frequency motor, the motor is controlled to rotate for a preset rotation time t7 and stop for a preset stop time t8, for example, rotating for 4S and stopping for 3S. If the motor is a variable-frequency motor, the motor is controlled to rotate at the maximum speed vmax, for example, 700r / min.

[0116] In the T4 stage, high-speed dehydration of clothes is achieved, thereby improving the dehydration effect of clothes.

[0117] It should be understood that, although the various steps in the flowcharts in the above-described embodiments are sequentially displayed according to the indications of the arrows, these steps are not necessarily executed sequentially in the order indicated by the arrows. Unless there is a clear description in this article, the execution of these steps is not strictly limited in order, and they can be executed in other orders. Moreover, at least a portion of the steps in the figure may include a plurality of sub-steps or a plurality of stages, and these sub-steps or stages are not necessarily executed at the same time, but can be executed at different times, and their execution order is not necessarily to be carried out sequentially, but can be executed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.

[0118] In one embodiment, a washing machine motor control device is provided.

[0119] Figure 3 A schematic diagram of a washing machine motor control device provided in an embodiment of the present application, such as Figure 3 As shown, the device comprises:

[0120] The current acquisition module 100 is used to acquire the real-time current of the motor after the washing machine enters the dehydration program.

[0121] The motor control module 200 is used to control the motor to operate in a first working mode when the real-time current reaches the starting current of the motor, so as to drive the 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, the motor is controlled to operate in a second working mode 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, the motor is controlled to operate in a third working mode to drive the drum in the washing machine to rotate at a third rotation amplitude. The motor operating parameters in the first working mode, the second working mode and the third working mode are different, the second rotation amplitude is less than the first rotation amplitude, and the second rotation amplitude is less than the third rotation amplitude.

[0122] For the specific definition of the washing machine motor control device, please refer to the definition of the washing machine motor control method above, which will not be repeated here. Each module in the above-mentioned washing machine motor control device can be implemented in whole or in part by software, hardware and a combination thereof. The above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.

[0123] The present application provides a washing machine motor control device, which controls the motor to drive the drum to rotate at a first rotation amplitude when the real-time current of the motor reaches the starting current. During the dehydration process, if water accumulates in the gap between the inner and outer barrels, the current will increase. Therefore, when the real-time current is greater than the overload current, the motor is controlled to drive the drum to rotate at a second rotation amplitude. Since the second rotation amplitude is less than the first rotation amplitude, the centrifugal force corresponding to the water accumulation is reduced at this time, so that the water accumulation can be removed from the gap between the inner and outer barrels, thereby reducing the motor load. Correspondingly, the real-time current of the motor also decreases accordingly. 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 greater than the second rotation amplitude to perform clothing dehydration. Therefore, the present application can prevent the occurrence of thermal protection caused by water accumulation, ensure the normal operation of the motor, and further ensure the dehydration effect.

[0124] In some embodiments, a washing machine is provided.

[0125] Figure 4 A schematic diagram of a washing machine 10 provided in an embodiment of the present application is shown in FIG. Figure 4 As shown, the washing machine comprises:

[0126] The motor 11 is used to drive the drum in the washing machine to rotate.

[0127] The current detection component 12 is used to detect the real-time current of the motor after the washing machine enters the dehydration program.

[0128] The control board 13 is used to obtain 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 the first working mode to drive the 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, the motor is controlled to work in the second working mode 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, the motor is controlled to work in the third working mode to drive the drum in the washing machine to rotate at a third rotation amplitude. Among them, 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.

[0129] Among them, the control board is also used to execute the steps in the above-mentioned method embodiments of the present application.

[0130] In the present application, when the real-time current of the motor reaches the starting current, the motor is controlled to drive the drum to rotate at a first rotation amplitude. During the dehydration process, if water accumulates in the gap between the inner and outer barrels, the current will increase. Therefore, when the real-time current is greater than the overload current, the motor is controlled to drive the drum to rotate at a second rotation amplitude. Since the second rotation amplitude is smaller than the first rotation amplitude, the centrifugal force corresponding to the water accumulation is reduced at this time, so that the water accumulation can be removed from the gap between the inner and outer barrels, thereby reducing the motor load. Correspondingly, the real-time current of the motor also decreases. 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 greater than the second rotation amplitude to dehydrate the clothes. Thus, the present application can prevent the occurrence of thermal protection caused by water accumulation, ensure the normal operation of the motor, and further ensure the dehydration effect.

[0131] In one embodiment, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are executed by a processor, they are used to implement the steps of various method embodiments of the present application.

[0132] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0133] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the application disclosed herein. This application is intended to cover any variations, uses or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0134] It should be understood that the present disclosure is not limited to the exact structures that have been 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

1. A washing machine motor control method, characterized in that: include: After the washing machine enters the dehydration program, obtain the real-time current of the motor; When the real-time current reaches the starting current of the motor, controlling the motor to operate in a first operating mode to drive the 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 operate in a second operating mode to drive the drum in the washing machine to rotate at a second rotation amplitude, and 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 operate in a third operating mode to drive the drum in the washing machine to rotate at a third rotation amplitude; The motor operating parameters in the first operating mode, the second operating mode and the third operating 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 according to claim 1, characterized in that When the motor is a fixed-frequency motor, controlling the motor to operate in a first operating mode includes: Control the motor to rotate according to a working mode in which the rotation time is a first time length and the stop time is a second time length; Wherein, the first time duration is greater than or equal to the time duration for the speed of the motor to increase from 0 to the maximum speed; The value range of the second duration is a first preset duration range centered on the preset stop duration.

3. The method according to claim 2, characterized in that The controlling the motor to operate in the second operating mode includes: Controlling the motor to rotate according to a working mode in which the rotation time is a third time length and the stop time is a fourth time length; Wherein, the third duration is shorter than the preset rotation duration, and the preset rotation duration is shorter than the first duration; The value range of the fourth duration is the first preset duration range.

4. The method according to claim 3, characterized in that The controlling the motor to operate in a third operating mode includes: Controlling the motor to rotate according to a working mode in which the rotation time is a fifth time length and the stop time is a sixth time length; Wherein, the fifth duration is greater than the preset rotation duration and less than the first duration; The value range of the sixth duration is the first preset duration range.

5. The method according to any one of claims 2 to 4, characterized in that: Also includes: When the real-time current is less than the starting current, the motor is controlled to rotate according to a working mode in which the rotation time is a preset rotation time and the stop time is a preset stop time.

6. The method according to claim 1, characterized in that When the motor is a variable frequency motor, controlling the motor to operate in a first operating mode includes: Controlling the motor to rotate in a working mode with a first speed; The first speed is less than the maximum speed of the motor and greater than the next speed of the maximum speed.

7. The method according to claim 6, characterized in that The controlling the motor to operate in the second operating mode includes: Controlling the motor to rotate in a working mode with a rotation speed of a second speed; The second speed is greater than the minimum speed of the motor and does not exceed half of the maximum speed.

8. The method according to claim 7, characterized in that The controlling the motor to operate in a third operating mode includes: Controlling the motor to rotate in a working mode with a rotation speed of a third speed; The third speed is greater than half of the maximum speed and less than the maximum speed.

9. The method according to any one of claims 6 to 8, characterized in that: Also includes: When the real-time current is less than the starting current, the motor is controlled to rotate in a working mode with a maximum rotation speed.

10. A washing machine, characterized in that: include: A motor, used to drive the drum in the washing machine; A current detection component, used for detecting the real-time current of the motor after the washing machine enters the dehydration program; A control panel, configured to obtain a real-time current of the motor; when the real-time current reaches a starting current of the motor, control the motor to operate in a first operating mode to drive the drum in the washing machine to rotate in a first rotation amplitude; When the real-time current is greater than the overload current of the motor, controlling the motor to operate in a second operating mode 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, the motor is controlled to operate in a third operating mode to drive the drum in the washing machine to rotate with a third rotation amplitude; wherein the motor operating parameters in the first operating mode, the second operating mode and the third operating 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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