CN115928375A - Control method of washing machine and washing machine - Google Patents

Abstract

The embodiment of the application provides a control method of a washing machine and the washing machine, wherein the washing machine comprises a washing drum and a safety switch, the washing drum is provided with a protruding part which extends outwards in the radial direction, the protruding part is provided with a through hole, a rod part of the safety switch is inserted into the through hole, and when the washing drum shakes, the inner wall surface of the through hole touches the rod part, so that the rod part deforms and the capacitance value of the safety switch changes; the control method of the washing machine includes: determining the working mode of the washing machine, wherein the working mode comprises a washing mode, a drainage mode and a dehydration mode; acquiring the capacitance value variable quantity of the safety switch; adjusting the working parameters of the washing machine in the corresponding working mode according to the capacitance value variation, thereby avoiding the collision between the washing drum and the box body of the washing machine and reducing the vibration and noise of the washing machine; meanwhile, the capacitance value of the safety switch can be changed due to the fact that the washing drum is greatly shaken in any direction, and the sensitivity of the safety switch can be improved.

Description

Control method of washing machine and washing machine

Technical Field

The application belongs to the technical field of household appliances, and particularly relates to a control method of a washing machine and the washing machine.

Background

The washing machine is one of household appliances commonly used in daily life. When the washing machine is used and the clothes are seriously unbalance-loaded, the shaking amplitude of the outer cylinder is large, and even the outer cylinder impacts the box body.

At present, a contact type safety switch is usually arranged on the pulsator washing machine, and a power supply is cut off after the safety switch is impacted by an outer drum so as to protect the washing machine. However, since the position of the safety switch is fixed and the safety switch is far away from the outer cylinder, the conditions for triggering the safety switch by the outer cylinder are harsh and have poor reliability, the whole washing machine is vibrated greatly, noise is generated greatly, and the use experience of a user is poor.

Disclosure of Invention

The embodiment of the application provides a control method of a washing machine and the washing machine, which can improve the sensitivity of a safety switch, reduce the vibration and noise of the washing machine and improve the use experience of a user.

The embodiment of the application provides a control method of a washing machine, the washing machine comprises a washing drum and a safety switch, the washing drum is provided with a protruding part which extends outwards in the radial direction, the protruding part is provided with a through hole, a rod part of the safety switch is inserted into the through hole, when the washing drum shakes, the inner wall surface of the through hole touches the rod part, so that the rod part deforms and the capacitance value of the safety switch changes; the control method comprises the following steps:

determining an operation mode of the washing machine, the operation mode including a washing mode, a draining mode and a dehydrating mode;

acquiring the capacitance value variable quantity of the safety switch;

and adjusting the working parameters of the washing machine in the corresponding working mode according to the capacitance value variation.

In some embodiments, the step of adjusting the operating parameter of the washing machine in the corresponding operating mode according to the capacitance variation comprises:

when the working mode of the washing machine is a washing mode, acquiring a first capacitance value variable quantity of the safety switch; if the first capacitance variation is larger than or equal to a first preset capacitance variation threshold, controlling a motor of the washing machine to reduce the washing beat;

when the working mode of the washing machine is a drainage mode, acquiring a second capacitance value variable quantity of the safety switch after drainage is finished, and judging whether the washing machine executes a dewatering program according to the second capacitance value variable quantity;

and when the working mode of the washing machine is a dehydration mode, acquiring a third capacitance value variable quantity of the safety switch, and judging whether the washing machine stops a dehydration program or not according to the third capacitance value variable quantity.

In some embodiments, the determining whether the washing machine performs the dehydration process according to the second capacitance value variation includes:

comparing the second capacitance value variation with a second preset capacitance value variation threshold;

if the second capacitance value variation is larger than or equal to the second preset capacitance value variation threshold, controlling the washing machine to feed water again, and executing a leveling program;

and if the second capacitance value variation is smaller than the second preset capacitance value variation threshold, controlling the washing machine to enter a dehydration program.

In some embodiments, the determining whether the washing machine stops the dehydration process according to the third capacitance value variation includes:

comparing the third capacitance variation with a third preset capacitance variation threshold;

if the third capacitance value variation is larger than or equal to the third capacitance value variation threshold, controlling the washing machine to stop a dehydration program, and executing a leveling program after water is fed again;

and if the third capacitance value variation is smaller than the third preset capacitance value variation threshold, controlling the washing machine to continuously execute a dehydration program.

In some embodiments, the controlling the washing machine to continue the dehydration process includes:

calculating a difference value between the third capacitance value variation and the third preset capacitance value variation threshold;

judging whether the difference value is within a preset difference value range or not;

if the judgment result is yes, adjusting the dehydration rotating speed of a washing drum in the washing machine to a first rotating speed;

if the judgment result is negative, adjusting the dehydration rotating speed of the washing drum in the washing machine to a second rotating speed;

wherein the first rotation speed is less than the second rotation speed, and the second rotation speed does not exceed the maximum dehydration rotation speed of the washing machine.

In some embodiments, the control method of the washing machine further includes:

when the washing machine is not operated, acquiring a fourth capacitance value variation of the safety switch;

and if the fourth capacitance variation is larger than or equal to a fourth preset capacitance variation threshold, sending an instruction for adjusting the bottom angle height of the washing machine or the placing position of the washing machine.

The embodiment of the present application further provides a washing machine, which includes:

a box body;

the washing drum is arranged in the box body and provided with a protruding part extending outwards in the radial direction, and the protruding part is provided with a through hole;

the safety switch is arranged in the box body and fixedly connected with the box body, the safety switch comprises a rod part, the rod part is inserted into the through hole, and when the washing drum shakes, the inner wall surface of the through hole touches the rod part, so that the rod part deforms and the capacitance value of the safety switch changes;

the capacitance sensor is electrically connected with the safety switch and is used for detecting the capacitance value variation of the safety switch;

and the control unit is electrically connected with the capacitance sensor and is used for determining the working mode of the washing machine, acquiring the capacitance value variation of the safety switch and adjusting the working parameters of the washing machine in the corresponding working mode according to the capacitance value variation.

In some embodiments, the safety switch further comprises a first electrode plate and a second electrode plate which are oppositely arranged, a capacitor is formed between the first electrode plate and the second electrode plate, and the second electrode plate is connected with the rod part; when the rod part is deformed, the area of the second electrode plate opposite to the first electrode plate can be changed, so that the capacitance value of the safety switch is changed.

In some embodiments, the washing barrel comprises an outer barrel, the outer barrel comprises an outer barrel body and an outer barrel ring, the outer barrel ring is covered on the opening of the outer barrel body, and the protruding part is fixedly connected with the outer barrel ring.

In some embodiments, the bore diameter of the through bore is greater than the diameter of the shaft.

According to the control method of the washing machine and the washing machine, the rod part of the safety switch is inserted into the through hole of the protruding part arranged on the washing drum, the inner wall surface of the through hole can touch the rod part when the washing drum greatly shakes in any direction, the capacitance value of the safety switch is caused to change, and the working parameters of the washing machine in a corresponding working mode can be adjusted according to the capacitance value change quantity by obtaining the capacitance value change quantity of the safety switch, so that the washing drum is prevented from colliding with a box body of the washing machine, the vibration and the noise of the washing machine are reduced, and the use experience of a user is improved; meanwhile, the capacitance value of the safety switch can be changed due to the fact that the washing drum is greatly shaken in any direction, the improvement of the sensitivity of the safety switch is facilitated, and the safety switch is high in detection precision and high in reliability.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

For a more complete understanding of the present application and its advantages, reference is now made to the following descriptions taken in conjunction with the accompanying drawings, wherein like reference numerals represent like parts in the following description.

Fig. 1 is a schematic structural diagram of a washing machine according to an embodiment of the present application.

Fig. 2 is a schematic structural view of the washing drum and the safety switch shown in fig. 1.

Fig. 3 is an exploded view of the wash cartridge and safety switch of fig. 1.

Fig. 4 is a schematic structural view of the safety switch shown in fig. 3.

Fig. 5 is a first flowchart of a control method of a washing machine according to an embodiment of the present disclosure.

Fig. 6 is a second flowchart of a control method of a washing machine according to an embodiment of the present disclosure.

Fig. 7 is a third flowchart of a control method of a washing machine according to an embodiment of the present disclosure.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It should be apparent that the described embodiments are only a few embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without inventive step, are within the scope of the present application.

The embodiment of the application provides a control method of a washing machine and the washing machine, which can improve the sensitivity of a safety switch, reduce the vibration and noise of the washing machine and improve the use experience of a user. It should be noted that the washing machine provided in the embodiments of the present application is a pulsator washing machine, and the following description is made with reference to the accompanying drawings.

Referring to fig. 1 to 4, fig. 1 is a schematic structural diagram of a washing machine according to an embodiment of the present disclosure, fig. 2 is a schematic structural diagram of a washing tub and a safety switch shown in fig. 1, fig. 3 is an exploded schematic structural diagram of the washing tub and the safety switch shown in fig. 1, and fig. 4 is a schematic structural diagram of the safety switch shown in fig. 3. The washing machine provided in the embodiment of the present application includes a cabinet 10, a washing tub 20, and a safety switch 30.

Wherein, the washing drum 20 and the safety switch 30 are disposed in the cabinet 10 and connected with the cabinet 10. It should be noted that the washing machine includes an outer tub and an inner tub, the outer tub can be used as a support frame of the inner tub, and the inner tub is rotatably connected with the outer tub, that is, the inner tub rotates inside the outer tub to process the clothes. It will be appreciated that the washing drum 20 may be the tub of a washing machine.

Illustratively, the washing drum 20 is suspended on the inner wall of the cabinet 10 by four suspension springs, and the safety switch 30 is fixedly connected to the cabinet 10. In some embodiments, the washing machine further includes a control panel base 40, the control panel base 40 is fixed on the top of the cabinet 10, and the safety switch 30 may be fixed on the control panel base 40 by a fastening member such as a screw or a bolt.

As shown in fig. 2 and 3, in the embodiment of the present application, the washing drum 20 is provided with a protrusion 21 extending radially outward, and the protrusion 21 is provided with a through hole 211. Preferably, the protruding part 21 is of an integral structure with the washing drum 20. It should be noted that, when the washing drum 20 shakes, the protruding portion 21 also shakes synchronously with the washing drum 20, that is, the protruding portion 21 and the washing drum 20 form a linkage structure.

In some embodiments, the washing drum 20 may include an outer drum 22 and an outer drum ring 23, the outer drum ring 23 is covered on the opening of the outer drum 22, and the protrusion 21 is connected with the outer drum ring 23. It will also be appreciated that the lugs 21 are arranged radially of the outer ring 23 and form a unitary structure with the outer ring 23. When the outer cylinder 22 shakes, the outer cylinder ring 23 and the protruding part 21 also shake synchronously with the washing cylinder 20.

As shown in fig. 1 and 5, the safety switch 30 includes a sensing portion 32 and a lever portion 31, one end of the lever portion 31 is connected to the sensing portion 32, and the other end of the lever portion 31 is a free end. Wherein, the sensing part 32 is provided with a mounting hole 321, and the safety switch 30 can be fixed on the control panel seat 40 of the washing machine through the mounting hole 321 by a screw.

Referring to fig. 1 to 5, the lever portion 31 is inserted into the through hole 211 of the boss portion 21. Preferably, the through hole 211 is a circular hole, and the aperture of the through hole 211 is larger than or equal to the diameter of the rod part 31, so that a certain gap is reserved between the rod part 31 and the inner wall surface of the through hole 211. In the horizontal rest state, the rod portion 31 is directed vertically downward, and the rod portion 31 is not in contact with the inner wall surface of the through hole 211, i.e., the protrusion portion 21 does not apply a force in the horizontal direction to the rod portion 31. When the washing drum 20 shakes to a greater extent, the protruding portion 21 also shakes synchronously, and at this time, the inner wall surface of the through hole 211 directly touches the rod portion 31, that is, the protruding portion 21 collides with the rod portion 31, so that the rod portion 31 deforms elastically and the capacitance value of the safety switch 30 changes.

In some embodiments, the sensing part 32 includes a first electrode sheet and a second electrode sheet that are oppositely disposed, and a capacitance may be formed therebetween. Wherein the second electrode sheet is fixedly connected with the rod part 31. When the rod part 31 deforms, the rod part 31 can drive the second electrode plate to synchronously displace so as to change the opposite area of the second electrode plate and the first electrode plate, and therefore the capacitance value between the first electrode plate and the second electrode plate changes.

As can be understood, since the rod 31 of the safety switch 30 is inserted into the through hole 211 of the protruding portion 21, the inner wall surface of the through hole 211 can touch the rod 31 when the washing drum 20 largely shakes in any direction, and the capacitance value of the safety switch 30 is caused to change, so that the working parameters of the washing machine can be adjusted according to the change of the capacitance value, such as the dehydration rotation speed of the washing machine is adjusted or the washing beat of the motor is reduced, the washing drum 20 is prevented from colliding with the washing machine box 10, the vibration and noise of the washing machine are reduced, and the user experience is improved; meanwhile, the capacitance value of the safety switch 30 can be changed due to the large-amplitude shaking of the washing drum 20 in any direction, so that the sensitivity of the safety switch 30 is improved, and the detection precision and the reliability are high.

In order to more clearly describe the adjustment method for the operating parameters of the washing machine according to the embodiment of the present application, the following description will be made in terms of a control method of the washing machine.

For example, please refer to fig. 5 in combination with fig. 1 to 4, and fig. 5 is a first flowchart of a control method of a washing machine according to an embodiment of the present disclosure. The embodiment of the present application further provides a control method of a washing machine, and the structural composition of the washing machine may refer to the above description, which is not described herein again. The control method of the washing machine may include:

101. the method includes acquiring operation modes of the washing machine, wherein the operation modes include a washing mode, a draining mode and a dehydrating mode.

102. And acquiring the capacitance value variable quantity of the safety switch.

103. And adjusting the working parameters of the washing machine in the corresponding working mode according to the capacitance value variation.

Three operation modes are set for the washing machine, that is, the operation modes include a washing mode, a drain mode and a dehydration mode. After the control method is adopted, the safe control of the washing machine in the process of different working modes can be realized, and the phenomenon that the gravity center of the washing drum 20 is deviated to collide with the box body 10 of the washing machine is avoided, so that the vibration and the noise of the washing machine are reduced, and the use experience of a user is improved.

For example, please refer to fig. 6 in combination with fig. 1 to 4, fig. 6 is a second flow chart of the control method of the washing machine according to the embodiment of the present disclosure. An embodiment of the present application further provides a control method of a washing machine, which may include:

201. the method includes acquiring operation modes of the washing machine, wherein the operation modes include a washing mode, a draining mode and a dehydrating mode.

202. When the working mode of the washing machine is a washing mode, acquiring the variable quantity of a first capacitance value of the safety switch; and if the first capacitance variation is larger than or equal to a first preset capacitance variation threshold, controlling a motor of the washing machine to reduce the washing beat.

In an exemplary pulsator washing machine, a pulsator is driven by a motor to rotate forward and backward to form water flow and washing force, so that the effect of washing clothes is achieved. In the process of washing the laundry, the pulsator at the bottom of the washing tub 20 rotates the washing water in the washing tub 20 to form a water current, which can rotate the laundry. It should be noted that the laundry is easily entangled during the spin washing process, so that the center of gravity of the washing drum 20 is shifted, and the shaking amplitude of the washing drum 20 is too large.

In the embodiment of the present application, during the washing process of the washing machine, the washing drum 20 largely shakes in any direction, so that the inner wall surface of the through hole 211 touches the rod 31 of the safety switch 30, and the rod 31 deforms to change the capacitance of the safety switch 30. Through obtaining safety switch 30's first capacitance value variation, and compare first capacitance value variation and first preset capacitance value variation threshold, if first capacitance value variation is greater than or equal to first preset capacitance value variation threshold, then control washing machine's motor reduces the washing beat, reduce the commentaries on classics of impeller to stop than promptly, make the washing water rotatory tend to gently, in order to reduce the winding of waiting to wash between the clothing, and be favorable to untiing the winding that takes place between the clothing of waiting to wash, reduce washing machine's vibrations and noise, avoid washing barrel 20 and washing machine box 10 to bump, protect washing machine not grant the damage.

The maximum value of the first capacitance variation in the washing mode at certain intervals may be selected to obtain the first capacitance variation, so as to accurately reflect the shaking amplitude of the washing drum 20 in this period. For example, the sampling frequency for obtaining the first capacitance variation may be configured to be 5s, and the implementer may select the first capacitance variation accordingly according to his own needs.

In some embodiments, the first preset capacitance value variation threshold may be understood as the capacitance value variation of the safety switch 30 when the washing drum 20 impacts the cabinet 10. If the first capacitance variation is smaller than the first preset capacitance variation, it indicates that the shaking of the washing drum 20 is within the acceptable range, and the case of hitting the cabinet 10 does not occur, and at this time, the motor of the washing machine maintains the current washing beat.

203. And when the working mode of the washing machine is a drainage mode, acquiring a second capacitance value variable quantity of the safety switch after drainage is finished, and judging whether the washing machine executes a dewatering program or not according to the second capacitance value variable quantity.

It should be noted that, after the washing machine finishes draining, because the distribution of the clothes in the washing drum 20 is random, if the clothes are seriously eccentric in the washing drum 20, if the dewatering process is directly performed, the washing machine may have violent shaking different from the normal state. Therefore, in the embodiment of the present invention, the second capacitance variation of the safety switch 30 is obtained after the draining is finished, and whether the washing machine executes the spin-drying process is determined according to the second capacitance variation.

Specifically, after the drainage is finished, if the laundry is seriously eccentric in the washing drum 20, the washing drum 20 may be inclined toward the eccentric side, and at this time, the inner wall surface of the through hole 211 may touch the rod 31 of the safety switch 30, so that the rod 31 may be deformed, and the capacitance value of the safety switch 30 may be changed.

By acquiring the second capacitance value variation of the safety switch 30 after the water drainage is finished, comparing the second capacitance value variation with a second preset capacitance value variation threshold; and if the second capacitance value variation is larger than or equal to a second preset capacitance value variation threshold value, controlling the washing machine to feed water again, and executing a leveling program to enable the clothes to be uniformly distributed and then enter a dehydration program.

Further, in the embodiment of the present application, if the second capacitance variation is smaller than the second predetermined capacitance variation threshold, the washing machine is controlled to enter the spin-drying procedure.

204. And when the working mode of the washing machine is a dehydration mode, acquiring the third capacitance value variable quantity of the safety switch, and judging whether the washing machine stops the dehydration program or not according to the third capacitance value variable quantity.

In the embodiment of the present application, during the dewatering process of the washing machine, the washing drum largely shakes in any direction, so that the inner wall surface of the through hole 211 touches the rod 31 of the safety switch 30, and the rod 31 deforms to cause the capacitance value of the safety switch 30 to change. It should be noted that the more uneven the distribution of the laundry during the spin-drying process, the larger the shaking amplitude of the washing drum 20 and the larger the variation of the capacitance value of the safety switch 30.

In this application, washing machine is under the dehydration mode, through the third capacitance value variation volume that acquires safety switch 30 to judge whether washing machine stops the dehydration procedure according to the third capacitance value variation volume, with the condition of preventing that the washing section of thick bamboo acutely rocks and takes place to strike washing machine box among the dehydration process.

The third capacitance variation is obtained by using the maximum capacitance variation of the safety switch 30 within a certain time after the start of the dehydration, because the deformation of the safety switch 30 caused by the shaking of the washing drum 20 is in a curve form after the start of the dehydration, and the shaking amplitude of the washing drum 20 within the certain time can be accurately reflected by selecting the maximum capacitance variation within the certain time after the start of the dehydration. More specifically, the maximum capacitance variation of the safety switch 30 within 50ms to 300ms after the start of the dehydration can be obtained, and the implementer can correspondingly select the maximum capacitance variation according to the self requirement.

Further, in the embodiment of the present application, the determining whether the washing machine stops the spin-drying process according to the third capacitance variation includes:

comparing the third capacitance value variation with a third preset capacitance value variation threshold; if the third capacitance variation is larger than or equal to the third capacitance variation threshold, controlling the washing machine to stop dewatering, controlling the washing machine to feed water again, and then executing a leveling program to uniformly distribute the clothes and then dewatering; and if the third capacitance value variation is smaller than a third preset capacitance value variation threshold, controlling the washing machine to continuously execute the dehydration program.

It can be understood that the third predetermined threshold for the change of the capacitance value is mainly used for determining whether a serious laundry eccentricity condition occurs in the washing drum during the dehydration process. At this time, the washing machine may have a violent vibration different from the normal state, which may generate a serious noise or even damage the washing machine, so that the washing machine may not be dehydrated any more, and it is necessary to supply water to the washing drum again, adjust the position of the clothes, and then to swing the clothes flat, and then to dehydrate the clothes.

In the embodiment of the application, the step of controlling the washing machine to continuously execute the dehydration program comprises the following steps:

calculating a difference value between the third capacitance variation and a third preset capacitance variation threshold;

judging whether the difference value is within a preset difference value range or not;

if the judgment result is yes, adjusting the dehydration rotating speed of a washing drum in the washing machine to a first rotating speed;

if the judgment result is negative, adjusting the dehydration rotating speed of the washing drum in the washing machine to a second rotating speed;

wherein, the first rotating speed is less than the second rotating speed, and the second rotating speed does not exceed the maximum allowable dehydration rotating speed of the washing machine.

It can be understood that the spin-drying speed of the washing machine in the present application is divided into two steps, and when the vibration amplitude of the whole washing machine is large, the spin-drying is performed at a lower speed, i.e. the first speed. When the vibration amplitude of the whole washing machine is small, the washing machine carries out dehydration at a higher rotation speed, namely a second rotation speed, and the second rotation speed does not exceed the maximum allowable dehydration rotation speed of the washing machine. It can be understood that when the vibration amplitude of the whole washing machine is small, so that the rod part 31 of the safety switch 30 is basically maintained in the original vertical state, the washing machine performs the dehydration at the second rotation speed or at the full speed, and thus the dehydration efficiency can be improved while the safety of the washing machine is considered.

Referring to fig. 7, fig. 7 is a third flowchart of a control method of a washing machine according to an embodiment of the present disclosure. The control method of the washing machine provided by the embodiment of the application further comprises the following steps:

301. when the washing machine does not operate, acquiring the fourth capacitance value variation of a safety switch;

302. and if the fourth capacitance variation is larger than or equal to a fourth preset capacitance variation threshold, sending an instruction for adjusting the height of the bottom angle of the washing machine or the placing position of the washing machine.

It should be noted that, when the ground on which the washing machine is placed is uneven, or the washing machine is in a non-horizontal state due to the adjustment of the legs of the washing machine, the washing machine may be inclined toward the lower side of the ground, and the washing drum 20 is also correspondingly inclined toward the inclined direction of the washing machine, so that the inner wall surface of the through hole 211 touches the rod 31 of the safety switch 30, and the rod 31 is deformed to cause the capacitance value of the safety switch 30 to change. However, the larger the inclination angle of the washing machine is, the larger the amplitude of the plunger of the washing tub 20 is, and the larger the amount of change in the capacitance of the safety switch 30 is.

In the embodiment of the present application, when the washing machine is not in operation, that is, when the laundry to be washed is not placed in the washing drum 20, and the washing drum 20 is in a stationary state, the fourth capacitance variation of the safety switch 30 is obtained, and the fourth capacitance variation is compared with a fourth preset capacitance variation threshold; if the fourth capacitance variation is greater than or equal to the fourth preset capacitance variation threshold, which indicates that the inclination angle of the washing drum 20 exceeds the preset requirement, that is, the washing machine is in a non-horizontal state, an instruction for adjusting the height of the bottom angle of the washing machine or the placement position of the washing machine is sent, that is, a warning prompt is sent to request that the washing machine is restored to the horizontal state.

For example, the fourth preset capacitance variation threshold may be a capacitance variation of the safety switch 30 when the washing machine is tilted by 3 °. It can also be understood that the washing machine should be inclined at an angle of less than 3 deg. in a normal state of the washing machine.

With reference to fig. 1, the washing machine provided in the embodiment of the present application further includes a capacitance sensor 50 and a control unit 60, wherein the capacitance sensor 50 is electrically connected to the safety switch 30, and the capacitance sensor 50 is used for detecting a capacitance variation of the safety switch 30; the control unit 60 is electrically connected to the capacitance sensor 50, and the control unit 60 is configured to determine an operating mode of the washing machine, obtain a capacitance variation of the safety switch 30, and adjust operating parameters of the washing machine in the corresponding operating mode according to the capacitance variation.

In some embodiments, when the operation mode of the washing machine is the washing mode, the control unit 60 is further configured to obtain a first capacitance variation of the safety switch 30; and if the first capacitance variation is larger than or equal to a first preset capacitance variation threshold, controlling a motor of the washing machine to reduce the washing beat.

In some embodiments, when the operation mode of the washing machine is the draining mode, the control unit 60 is further configured to obtain a second capacitance variation of the safety switch 30 after the draining is finished, and determine whether the washing machine performs the spin-drying process according to the second capacitance variation.

In some embodiments, when the operation mode of the washing machine is the dehydration mode, the control unit 60 further obtains a third capacitance variation of the safety switch 30, and determines whether the washing machine stops the dehydration process according to the third capacitance variation.

In some embodiments, when the washing machine is not in operation, the control unit 60 is further configured to obtain a fourth capacitance value variation of the safety switch 30; and if the fourth capacitance variation is larger than or equal to a fourth preset capacitance variation threshold, sending an instruction for adjusting the height of the bottom angle of the washing machine or the placing position of the washing machine.

In summary, according to the control method of the washing machine and the washing machine provided by the embodiment of the present application, because the rod 31 of the safety switch 30 is inserted into the through hole 211 of the protruding portion 21 provided on the washing drum 20, the inner wall surface of the through hole 211 can touch the rod 31 and cause the capacitance value of the safety switch 30 to change when the washing drum 20 largely shakes in any direction, and by obtaining the capacitance value variation of the safety switch 30, the working parameters of the washing machine in the corresponding working mode can be adjusted according to the capacitance value variation, so as to avoid the collision between the washing drum 20 and the washing machine box 10, thereby reducing the vibration and noise of the washing machine and improving the user experience; meanwhile, the capacitance value of the safety switch 30 can be changed due to the large-amplitude shaking of the washing drum 20 in any direction, so that the sensitivity of the safety switch 30 is improved, and the detection precision and the reliability are high.

In the description of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features.

The above detailed description is provided for the control method of the washing machine and the washing machine provided in the embodiments of the present application, and the principle and the embodiments of the present application are explained in the present application by applying specific examples, and the above description of the embodiments is only used to help understanding the method and the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims (10)

1. The control method of the washing machine is characterized in that the washing machine comprises a washing drum and a safety switch, wherein the washing drum is provided with a bulge part which extends outwards in the radial direction, the bulge part is provided with a through hole, a rod part of the safety switch is inserted into the through hole, and when the washing drum shakes, the inner wall surface of the through hole touches the rod part so as to deform the rod part and cause the capacitance value of the safety switch to change; the control method comprises the following steps:

determining an operation mode of the washing machine, the operation mode including a washing mode, a draining mode and a dehydrating mode;

acquiring the capacitance value variable quantity of the safety switch;

and adjusting the working parameters of the washing machine in the corresponding working mode according to the capacitance value variation.

2. The method for controlling a washing machine according to claim 1, wherein the step of adjusting the operating parameters of the washing machine in the corresponding operating mode according to the capacitance variation comprises:

when the working mode of the washing machine is a washing mode, acquiring a first capacitance value variable quantity of the safety switch; if the first capacitance variation is larger than or equal to a first preset capacitance variation threshold, controlling a motor of the washing machine to reduce the washing beat;

when the working mode of the washing machine is a drainage mode, acquiring a second capacitance value variable quantity of the safety switch after drainage is finished, and judging whether the washing machine executes a dewatering program according to the second capacitance value variable quantity;

and when the working mode of the washing machine is a dehydration mode, acquiring a third capacitance value variable quantity of the safety switch, and judging whether the washing machine stops a dehydration program or not according to the third capacitance value variable quantity.

3. The control method of a washing machine according to claim 2, wherein the determining whether the washing machine performs the dehydration process according to the second capacitance value variation includes:

comparing the second capacitance value variation with a second preset capacitance value variation threshold;

if the second capacitance value variation is larger than or equal to the second preset capacitance value variation threshold, controlling the washing machine to feed water again, and executing a leveling program;

and if the second capacitance value variation is smaller than the second preset capacitance value variation threshold, controlling the washing machine to enter a dehydration program.

4. The control method of a washing machine according to claim 2, wherein the determining whether the washing machine stops the dehydration process according to the third capacitance value variation includes:

comparing the third capacitance value variation with a third preset capacitance value variation threshold;

if the third capacitance value variation is larger than or equal to the third capacitance value variation threshold, controlling the washing machine to stop a dehydration program, and executing a leveling program after water is fed again;

and if the third capacitance value variation is smaller than the third preset capacitance value variation threshold, controlling the washing machine to continuously execute a dehydration program.

5. The control method of a washing machine as claimed in claim 4, wherein the step of controlling the washing machine to continue the dehydration process comprises:

calculating a difference value between the third capacitance value variation and the third preset capacitance value variation threshold;

judging whether the difference value is within a preset difference value range or not;

if the judgment result is yes, adjusting the dehydration rotating speed of the washing drum to a first rotating speed;

if the result of the judgment is negative, adjusting the dehydration rotating speed of the washing drum to a second rotating speed;

wherein the first rotation speed is less than the second rotation speed, and the second rotation speed does not exceed the maximum dehydration rotation speed of the washing machine.

6. The control method of a washing machine as claimed in any one of claims 1 to 5, further comprising:

when the washing machine is not operated, acquiring a fourth capacitance value variation of the safety switch;

and if the fourth capacitance variation is larger than or equal to a fourth preset capacitance variation threshold, sending an instruction for adjusting the bottom angle height of the washing machine or the placing position of the washing machine.

7. A washing machine, characterized by comprising:

a box body;

the washing drum is arranged in the box body and provided with a protruding part extending outwards in the radial direction, and the protruding part is provided with a through hole;

the safety switch is arranged in the box body and fixedly connected with the box body, the safety switch comprises a rod part, the rod part is inserted into the through hole, when the washing drum shakes, the inner wall surface of the through hole touches the rod part, so that the rod part deforms and the capacitance value of the safety switch changes;

the capacitance sensor is electrically connected with the safety switch and is used for detecting the capacitance value variation of the safety switch;

and the control unit is electrically connected with the capacitance sensor and is used for determining the working mode of the washing machine, acquiring the capacitance value variation of the safety switch and adjusting the working parameters of the washing machine in the corresponding working mode according to the capacitance value variation.

8. The washing machine as claimed in claim 7, wherein the safety switch further comprises a first electrode plate and a second electrode plate which are oppositely arranged, a capacitance is formed between the first electrode plate and the second electrode plate, and the second electrode plate is connected with the rod part; when the rod part is deformed, the area of the second electrode plate opposite to the first electrode plate can be changed, so that the capacitance value of the safety switch is changed.

9. The washing machine as claimed in claim 7, wherein the washing tub includes an outer tub, the outer tub includes an outer tub body and an outer tub ring, the outer tub ring covers an opening of the outer tub body, and the protrusion is fixedly connected to the outer tub ring.

10. A washing machine as claimed in any one of claims 7 to 9 wherein the aperture of the through-hole is larger than the diameter of the stem.

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