A washing machine control method and a washing machine

Abstract

The application discloses a washing machine control method and a washing machine, a lower part of an inner drum of the washing machine is provided with a drain port, a centrifugal valve is arranged at the drain port, a plurality of dewatering holes are arranged in the upper part of the inner drum along the circumference of the inner drum, and the method comprises the following steps: in the execution of a dewatering stage, the inner drum is controlled to rotate at different set rotating speeds, the centrifugal valve is opened by the centrifugal force, and / or the water flow in the inner drum flows to the dewatering holes by the centrifugal force. In the application, the rotating speed of the inner drum is adjusted, the centrifugal valve is opened by the centrifugal force when the inner drum rotates at a low speed, the water flow in the inner drum flows to the dewatering holes by the centrifugal force when the inner drum rotates at a medium speed or a high speed, the water flow in the inner drum flows downward or upward and is discharged from the inner drum, the dewatering method is simple and efficient, the structure is simple, the cost is low, and the dewatering efficiency of the washing machine is improved.

Description

TECHNICAL FIELD

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

[0002] In the prior art, the washing machine generally comprises an inner drum and an outer drum which are sleeved with each other, the inner drum is used for containing clothes, and the clothes are washed by rotating the inner drum, and the outer drum is sealed and used for containing water, and is not directly contacted with the clothes in the washing process, the outer drum is installed outside the inner drum to provide support for the inner drum, but the area between the sidewalls of the inner drum and the outer drum is prone to dirt accumulation after long-term use, and the scale in tap water, cellulose of clothes, organic matter of human body and dust and bacteria brought by clothes are prone to be retained between the sidewalls of the inner drum and the outer drum.

[0003] A washing machine and a drainage device of the washing machine are disclosed in a Chinese patent, the washing machine comprises an inner drum and a water collecting device, a drainage hole is formed in the bottom of the inner drum, there is no water between the inner drum and the water collecting device in the washing process, and the water in the inner drum is discharged by the water collecting device in the drainage process and the dewatering process; the drainage device comprises a sealing mechanism and a locking mechanism, the sealing mechanism comprises a plugging part and a driving part, the plugging part is installed on the drainage port to keep it closed, the driving part has an output end which reciprocates along a direction parallel to the central axis of the inner drum, and the locking mechanism positions and locks the inner drum, the output end of the driving part reciprocates, the plugging part is pushed out to open the drainage hole and is reset to close the drainage hole, however, the inner drum needs to be positioned and locked by the locking mechanism, and the plugging part needs to be driven by the driving part to open the drainage hole, so that the overall structure and control program of the washing machine are complex and the cost is high.

[0004] In view of this, the present application is proposed. SUMMARY

[0005] The technical problem to be solved by the present application is to overcome the shortcomings of the prior art, and to provide a washing machine control method to achieve the purpose of improving the dewatering efficiency of the washing machine.

[0006] To solve the above technical problems, the basic idea of the technical solution of the present application is as follows:

[0007] A washing machine control method, a drainage port is formed in the lower part of the inner drum of the washing machine, a centrifugal valve is arranged at the drainage port, a plurality of dewatering holes are formed in the upper part of the inner drum along the circumference of the inner drum, and the method comprises the following steps: in the dewatering stage, the inner drum is controlled to rotate at different set speeds, the centrifugal valve is opened by the centrifugal force, and / or the water flow in the inner drum flows to the dewatering holes by the centrifugal force.

[0008] Further, the step of controlling the inner drum to rotate at different set speeds in the dewatering stage comprises the following steps:

[0009] The inner tub is controlled to rotate at a speed not lower than a first set speed, and a centrifugal valve is opened by centrifugal force to open a drain hole in the bottom of the inner tub.

[0010] The inner tub is controlled to rotate at a speed not lower than a second set speed, the inner tub has a slope, and water in the inner tub flows to a dewatering hole in the mouth of the inner tub by centrifugal force, the second set speed > the first set speed.

[0011] Further, the dewatering stage includes a first dewatering stage and a second dewatering stage:

[0012] In the first dewatering stage, the speed of the inner tub is controlled to accelerate to a first set speed to rotate, and a centrifugal valve is opened by centrifugal force to open a drain hole, so that the water in the inner tub flows out through the drain hole;

[0013] After the first dewatering stage, the speed of the inner tub is controlled to be not lower than a second set speed for the second dewatering stage, and the inner tub is controlled to rotate in an alternating acceleration and deceleration manner, so that the water in the inner tub flows out through the dewatering hole.

[0014] Further, in the second dewatering stage, the speed of the inner tub is controlled to accelerate from N X to N Y , and then decelerate from N Y to N M , so that the speed of the inner tub rises to a third set speed in an alternating acceleration and deceleration manner, wherein N X ≤ N M < N Y .

[0015] Further, in the second dewatering stage, the inner tub is controlled to run at speeds N X , N Y , N M for set times T X , T Y , T M respectively, wherein T M < T X and T M < T Y .

[0016] Preferably, the inner tub is controlled to run at a speed N M for a set time T M , which is a constant value.

[0017] Further, the dewatering stage also includes a third dewatering stage:

[0018] After the second dewatering stage, the speed of the inner tub is controlled to be not lower than a third set speed for the third dewatering stage, the third set speed > the second set speed.

[0019] Further, in the third dewatering stage, the rotation speed of the inner drum is controlled to increase step by step from a third set speed to a preset target speed, and the preset target speed is greater than the third set speed.

[0020] Further, before the inner drum is controlled to rotate at different set speeds during the dewatering stage, the method further comprises:

[0021] During the draining stage, the rotation speed of the inner drum is controlled to accelerate to a draining set speed, and the centrifugal valve is opened to the draining port arranged at the bottom of the inner drum under the action of centrifugal force, so that the water in the inner drum flows out through the draining port, and the first set speed is less than the draining set speed, and the draining set speed is less than the second set speed.

[0022] Another object of the present application is to provide a washing machine to adjust the draining structure of the washing machine and improve the dewatering efficiency of the washing machine.

[0023] A washing machine applying the control method described above, comprising an inner drum, a draining port arranged at the lower part of the inner drum, a centrifugal valve arranged at the draining port, and a plurality of dewatering holes arranged at the upper part of the inner drum along the circumference of the inner drum.

[0024] Further, the draining port is arranged at the bottom of the inner drum, the inner drum has an inclination, and the dewatering holes are arranged at the mouth of the inner drum.

[0025] Preferably, the diameter of the inner drum wall gradually increases from the upper end and the lower end to the opening direction, so as to guide the water flow in the inner drum to flow to the dewatering holes under the action of centrifugal force.

[0026] After adopting the technical solution described above, the present application has the following beneficial effects compared with the prior art.

[0027] 1. In the present application, by adjusting the rotation speed of the inner drum, the centrifugal valve is opened under the action of centrifugal force when the inner drum rotates at low speed, and the water flow in the inner drum flows to the dewatering holes under the action of centrifugal force when the inner drum rotates at medium or high speed, so as to realize the downward or upward flow of the water flow in the inner drum and be drained out of the inner drum. The draining method is simple and efficient, the structure is simple, the cost is low, and the dewatering efficiency of the washing machine is improved.

[0028] 2. In the present application, in the second dewatering stage, the inner drum is controlled to rotate in an alternating manner of acceleration and deceleration until the rotation speed of the inner drum increases to a preset target speed, so that the water flow in the inner drum flows to the dewatering holes under the action of centrifugal force and further overcomes its own gravity, and the water flow in the inner drum is ensured to reach the dewatering holes in batches, avoiding the phenomenon of water throwing caused by the accumulation of a large amount of water around the dewatering holes.

[0029] 3、In the present application, the drainage phase is performed, the inner barrel is rotated at low speed, the centrifugal valve is opened by centrifugal force to drain the water in the inner barrel, and the water on the barrel wall and the water in the clothes are continuously collected at the bottom of the inner barrel by gravity after the inner barrel is stopped by inertia and the brake, thereby achieving simple and efficient drainage.

[0030] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0031] The accompanying drawings, which are part of the present application, serve to provide a further understanding of the present application, and the schematic embodiments of the present application and their descriptions serve to explain the present application, but do not constitute an improper limitation on the present application. Obviously, the drawings described below are only some embodiments, and other drawings can be obtained based on these drawings without creative labor for those skilled in the art. In the drawings:

[0032] Figure 1 is a flowchart of a washing machine control method in an embodiment of the present application;

[0033] Figure 2 is a logic block diagram of a washing machine control method in an embodiment of the present application;

[0034] Figure 3 is a schematic diagram of the overall structure of a washing machine in an embodiment of the present application;

[0035] Figure 4 is an enlarged schematic diagram of a centrifugal valve sealing a drain port in an embodiment of the present application;

[0036] Figure 5 is an enlarged schematic diagram of a centrifugal valve opening a drain port in an embodiment of the present application.

[0037] In the drawings:

[0038] 1, inner barrel; 101, drain port;

[0039] 2, centrifugal valve; 201, first centrifugal valve; 202, second centrifugal valve;

[0040] 21, limiting guide; 210, guide channel;

[0041] 22, sealing part;

[0042] 3, outer barrel; 31, drain pipe.

[0043] It should be noted that these drawings and written descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0044] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0045] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "longitudinal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0046] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0047] Example 1

[0048] like Figures 1 to 5 As shown, this embodiment of the invention provides a washing machine control method. The inner tub 1 of the washing machine has a drain outlet 101 at its lower part, a centrifugal valve 2 at the drain outlet 101, and several dehydration holes are formed along the circumference of the upper part of the inner tub 1. The method includes the following steps:

[0049] Step S1: During the dehydration stage, the inner tub 1 is controlled to rotate at different set speeds. The centrifugal valve 2 is opened by the centrifugal force to drain the outlet 101, and / or the water in the inner tub 1 flows towards the dehydration hole by the centrifugal force.

[0050] In the above scheme, by adjusting the rotation speed of the inner tub 1, the centrifugal valve 2 is opened by centrifugal force when the inner tub 1 rotates at low speed. When the inner tub 1 rotates at medium or high speed, the water in the inner tub 1 flows towards the dehydration hole under the action of centrifugal force, so that the water in the inner tub 1 flows downward or upward and is discharged from the inner tub 1. The drainage method is simple and efficient, the structure is simple, the cost is low, and the dehydration efficiency of the washing machine is improved.

[0051] like Figures 1 to 5 As shown, in this embodiment, in step S1, controlling the inner tub 1 to rotate at different set speeds during the dehydration stage specifically includes:

[0052] Step S11: control the inner drum 1 to rotate at a first set speed, and the centrifugal valve 2 is opened by the centrifugal force to open the drain port 101 at the bottom of the inner drum 1;

[0053] Step S12: control the inner drum 1 to rotate at a second set speed, the inner drum 1 has a slope, and the water flow in the inner drum 1 is affected by the centrifugal force to flow to the dewatering hole at the opening of the inner drum 1, and the second set speed is greater than the first set speed.

[0054] In the above scheme, at the initial stage of the dewatering phase, the inner drum 1 is controlled to rotate at a relatively low first set speed, and the centrifugal valve 2 is opened by the centrifugal force to open the drain port 101 to drain the water flow remaining at the bottom of the inner drum 1; the water flow remaining at the bottom of the inner drum 1 is drained, and the inner drum 1 is controlled to rotate at a second set speed to make the water in the clothes overcome the gravity to move upward and be drained through the dewatering hole.

[0055] In this embodiment, 110 rpm≤the first set speed<150 rpm, and 150 rpm≤the second set speed<600 rpm.

[0056] As shown in Figure 1 and Figure 2 , in this embodiment, the dewatering phase includes a first dewatering phase and a second dewatering phase, and specifically includes the following steps:

[0057] Step S11': in the first dewatering phase, the speed of the inner drum 1 is accelerated to the first set speed to rotate, and the centrifugal valve 2 is opened by the centrifugal force to open the drain port 101 to drain the water flow in the inner drum 1 through the drain port 101;

[0058] Step S12': after the first dewatering phase, the speed of the inner drum 1 is controlled to be not less than the second set speed for the second dewatering phase, and the inner drum 1 is controlled to rotate in an alternating manner of acceleration and deceleration to drain the water flow in the inner drum 1 through the dewatering hole.

[0059] In the above scheme, in the second dewatering phase, the inner drum 1 is controlled to rotate in an alternating manner of acceleration and deceleration until the speed of the inner drum 1 rises to a preset target speed, so that the water flow in the inner drum 1 is affected by the centrifugal force to overcome its own gravity to flow to the dewatering hole, and it is ensured that the water flow in the inner drum 1 reaches the dewatering hole in batches, avoiding the phenomenon of water splashing caused by a large amount of water gathering around the dewatering hole.

[0060] As shown in Figure 1 and Figure 2 , in this embodiment, in the second dewatering phase, the speed of the inner drum 1 is accelerated from N X to N Y , and then decelerated from N Y to N M, so that the rotation speed of the inner tub 1 is raised to a third set rotation speed in an alternating manner of acceleration and deceleration, wherein N X ≤N M <N Y .

[0061] In the above scheme, the rotation speed of the inner tub 1 is raised in a wave form, and the moisture in the laundry can be uniformly discharged through the dehydration holes. If the rotation speed of the inner tub 1 is accelerated linearly to the preset target rotation speed, a large amount of water will accumulate near the opening of the inner tub 1, and there is a risk of water being thrown out of the washing machine. The rotation speed of the inner tub 1 is controlled to be accelerated in steps from N X to N Y , and then decelerated from N Y to N M , so that the moisture in the laundry overcomes the gravity and moves upward and reaches the dehydration holes in batches, and N X ≤N M <N Y , thereby avoiding the water flow in upward movement from falling back.

[0062] In the embodiment, the first dehydration stage is a low-speed dehydration stage, and 110 revolutions per minute ≤ the first set rotation speed < 150 revolutions per minute; and the second dehydration stage is a medium-speed dehydration stage, and 150 revolutions per minute ≤ the second set rotation speed ≤ 480 revolutions per minute.

[0063] As shown in FIGS. Figure 1 and Figure 2 , in the second dehydration stage, the inner tub 1 is controlled to run at rotation speeds N X , N Y , and N M for set times T X , T Y , and T M , respectively, wherein T M <T X , and T M <T Y , so as to control the rotation speed of the inner tub 1 to rise in a wave form in the medium-speed dehydration stage, thereby avoiding a large amount of water from accumulating around the dehydration holes due to the rotation speed of the inner tub 1 rising too fast, and preventing the water flow flowing to the dehydration holes from flowing downward due to the rotation speed of the inner tub 1 suddenly dropping or the low-speed running time being too long.

[0064] Preferably, the inner tub 1 is controlled to run at the rotation speed N M for the set time T M , which is a constant value, so as to more accurately control the dehydration efficiency in the second dehydration stage.

[0065] By the above washing machine control method, the rotation speed of the inner tub 1 is controlled to make the centrifugal valve 2 open the drain port 101 to discharge the washing water under the action of centrifugal force, or the water flow in the inner tub 1 moves upward to be discharged through the dewatering hole under the action of centrifugal force, so that the water flow in the inner tub 1 is discharged downward or upward to improve the dewatering efficiency of the washing machine and prevent water from accumulating in the washing machine to cause dirt to accumulate in the washing machine.

[0066] Embodiment Two

[0067] As shown in Figure 1 and Figure 2 , this embodiment is a further limitation of the above-mentioned embodiment one, and the further dewatering phase further includes a third dewatering phase, including the following steps:

[0068] Step S13': After the second dewatering phase, the rotation speed of the inner tub 1 is controlled to be not less than the third set speed for the third dewatering phase, and the third set speed > the second set speed.

[0069] As shown in Figure 1 and Figure 2 , in this embodiment, in step S13', it further includes that in the third dewatering phase, the rotation speed of the inner tub 1 is controlled to be stepped up to a preset target speed from the third set speed, and the preset target speed ≥ the third set speed.

[0070] In this embodiment, the third dewatering phase is a high-speed dewatering phase, 480 rpm < the third set speed ≤ 650 rpm, preferably, the third set speed is 650 rpm, and the rotation speed of the inner tub 1 is controlled to be stepped up to a preset target speed from the third set speed.

[0071] In this embodiment, when the user programs the dewatering time, the self-programmed variable time changes at the third set speed of the high water dewatering phase, and the preset target speed ≥ the third set speed, to ensure the dewatering efficiency of the dewatering phase.

[0072] By the above washing machine control method, the third dewatering phase is a high-speed dewatering phase, and the inner tub 1 is controlled to rotate at not less than the third set speed at this time to realize that the inner tub 1 is in a high-speed rotating state, so that the residual moisture in the clothes is quickly discharged, and the moisture in the clothes meets the dewatering requirement.

[0073] Embodiment Three

[0074] As shown in Figure 1 and Figure 2 , this embodiment is a further limitation of the above-mentioned embodiment one and embodiment two, and in step S1, before the inner tub 1 is controlled to rotate at different set speeds when the dewatering phase is executed, the following steps are further included:

[0075] Step S0: when performing the draining phase, the control accelerates the rotation of the inner tub 1 to a draining set speed, and the centrifugal valve 2 is opened by the centrifugal force to drain the water in the inner tub 1 through the draining port 101, the first set speed < the draining set speed < the second set speed.

[0076] As shown in FIG. 1, in the first dehydration phase, the control accelerates the rotation of the inner tub 1 to the first set speed, and the centrifugal valve 2 is opened by the centrifugal force to drain the water in the inner tub 1 through the draining port 101. Figure 1 Figure 2 As shown in FIG. 1, in the first dehydration phase, the control accelerates the rotation of the inner tub 1 to the first set speed, and the centrifugal valve 2 is opened by the centrifugal force to drain the water in the inner tub 1 through the draining port 101.

[0077] In the present embodiment, the inner tub 1 is in the high water level state in the draining phase, and is in the low water level state in the first dehydration phase. The centrifugal force required to open the centrifugal valve 2 in the low water level state is smaller than that in the high water level state. Therefore, the draining set speed > the first set speed.

[0078] In the present embodiment, 110 rpm ≤ the first set speed < 150 rpm, and 130 rpm ≤ the draining set speed < 150 rpm.

[0079] By the above-mentioned control method of the washing machine, the centrifugal valve 2 is opened by the centrifugal force to drain the water in the inner tub 1 through the draining port 101 when the inner tub 1 rotates at a low speed in the draining phase. After the inner tub 1 stops rotating by inertia and brakes, the water on the inner tub 1 and the water in the clothes continue to gather at the bottom of the inner tub 1 by gravity, thereby achieving simple and efficient draining.

[0080] Embodiment Four

[0081] As shown in FIG. 1, in the first dehydration phase, the control accelerates the rotation of the inner tub 1 to the first set speed, and the centrifugal valve 2 is opened by the centrifugal force to drain the water in the inner tub 1 through the draining port 101. Figure 1 The present embodiment also provides a washing machine applying the above-mentioned control method, which comprises an inner tub 1. The lower part of the inner tub 1 is provided with a draining port 101, and the draining port 101 is provided with a centrifugal valve 2. The upper part of the inner tub 1 is provided with a plurality of dehydration holes along the circumference of the inner tub 1.

[0082] In the present embodiment, the centrifugal valve 2 is opened by the centrifugal force to drain the water in the inner tub 1 through the draining port 101 when the inner tub 1 rotates at a low speed. When the inner tub 1 rotates at a medium or high speed, the water in the inner tub 1 flows to the dehydration holes by the centrifugal force, so as to flow downward or upward to be drained out of the inner tub 1.

[0083] As shown in FIG. 1, in the first dehydration phase, the control accelerates the rotation of the inner tub 1 to the first set speed, and the centrifugal valve 2 is opened by the centrifugal force to drain the water in the inner tub 1 through the draining port 101. Figure 2 In the present embodiment, the draining port 101 is arranged at the bottom of the inner tub 1, the inner tub 1 has an inclination, and the dehydration holes are arranged at the opening of the inner tub 1, so that the water in the inner tub 1 moves upward by the centrifugal force against the gravity.

[0084] ​Preferably, the diameter of the inner barrel 1 gradually increases from the top and bottom ends outward toward the opening, so as to guide the water in the inner barrel 1 to flow toward the dewatering hole under the action of centrifugal force.

[0085] In this embodiment, a balance ring for maintaining the dynamic balance of the washing machine is provided above the inner tub 1, and the dehydration hole is located on the inner tub 1 at the bottom of the balance ring.

[0086] like Figures 3 to 5 As shown, in this embodiment, the inner tub 1 is a non-perforated inner tub 1. There are no water-permeable holes on the wall of the inner tub 1. Only the wall of the inner tub 1 above the highest water level is provided with a dewatering hole. A drain outlet 101 is provided at the bottom of the inner tub 1. The centrifugal valve 2 normally seals the drain outlet 101 so that the inner tub 1 can independently hold the washing water during washing, thus saving water resources.

[0087] like Figures 3 to 5 As shown, in this embodiment, the washing machine also includes an outer tub 3 coaxially disposed outside the inner tub 1. The outer tub 3 has a water collection chamber, so there is no washing water between the inner tub 1 and the outer tub 3 during washing, effectively preventing dirt and grime from accumulating between the inner and outer tubs 3 and causing bacterial growth. During the draining and / or spin-drying process, the centrifugal valve 2 opens the drain outlet 101, and the washing water in the inner tub 1 is discharged through the drain outlet 101 to the outer tub 3, and then discharged through the drain pipe 31 at the bottom of the outer tub 3.

[0088] For example, the centrifugal valve 2 includes: a limiting guide 21, which is fixedly installed on the inner side of the bottom of the inner tub 1. The limiting guide 21 itself or together with the bottom of the inner tub 1 forms a guide channel 210. One end of the guide channel 210 is connected to the drain outlet 101 and the other end extends towards the outer periphery of the bottom of the inner tub 1; and a sealing member 22, which is freely movable and limited within the guide channel 210. The sealing member 22 can at least seal the drain outlet 101 under its own weight.

[0089] like Figures 3 to 5 As shown, in this embodiment, when the rotation speed of the inner tub 1 is higher than the set rotation speed, the sealing component 22 can move along the guide channel 210 towards the outer periphery of the bottom of the inner tub 1 under the action of centrifugal force, and open the drain outlet 101.

[0090] During the drainage and / or dehydration stage, the inner tub 1 does not need to be pre-positioned, nor does it need to be driven by a drainage motor. It is only necessary to control the rotation speed of the inner tub 1 to be greater than the set drainage rotation speed or the first set rotation speed. This allows the sealing component 22 to move along the guide channel 210 towards the outer periphery of the bottom of the inner tub 1 under the action of centrifugal force, opening the drain port 101 and realizing drainage. The drainage method is simple, efficient, simple in structure, and low in cost.

[0091] like Figures 3 to 5As shown in the drawings, in the embodiment, the limiting and guiding member 21 is formed with a guiding channel 210, which is gradually curved upward from the direction of the bottom peripheral wall of the inner tub 1 to the drainage opening 101, so that the sealing member 22 can be moved to the drainage opening 101 under the action of gravity and / or water pressure to seal the drainage opening 101.

[0092] As shown in the drawings, in the embodiment, the guiding channel 210 has a gentle slope, so that when the rotating speed of the inner tub 1 is higher than the set rotating speed, the sealing member 22 can be moved along the guiding channel 210 to the direction close to the outer periphery of the bottom of the inner tub 1 under the action of centrifugal force to open the drainage opening 101. Figure 3

[0093] As shown in the drawings, in the embodiment, the guiding channel 210 is formed with an arc-shaped guiding path which is gradually raised from the direction of the outer periphery of the bottom of the inner tub 1 to the drainage opening 101, the first end of the guiding channel 210 is connected to the outer periphery of the drainage opening 101, and the second end is provided with a water guiding structure which is in communication with the inside of the inner tub 1.

[0094] As shown in the drawings, the sealing member 22 is a sealing ball which is freely rollable in the guiding channel 210, and the sealing ball is made of a material with a relatively large density to open or seal the drainage opening 101. Figures 1 to 3 Figures 1 to 3 Figures 1 to 3

[0095] In the embodiment, by setting the sealing member 22 as a spherical structure or an ellipsoidal structure, it is ensured that the sealing member 22 can roll more easily and smoothly in the guiding channel 210 under the action of centrifugal force, and the resistance is small, and the sealing member 22 can freely roll down to the second end of the guiding channel 210 when not subjected to the action of centrifugal force to seal the drainage opening 101.

[0096] Preferably, the drainage opening 101 includes a first drainage opening and a second drainage opening which are symmetrically arranged at the bottom of the inner tub 1, the first drainage opening and the second drainage opening are arranged at the opposite sides of the center of the bottom of the inner tub 1, the centrifugal valve 2 includes a first centrifugal valve 201 corresponding to the first drainage opening and a second centrifugal valve 202 corresponding to the second drainage opening, and the first centrifugal valve 201 and the second centrifugal valve 202 are located at the opposite sides of the center of the bottom of the inner tub 1.

[0097] The centrifugal valve 2 mentioned above is any one of the devices in which a movable part is subjected to the action of centrifugal force to open, close or partially block one or more openings or channels, so that liquid flow, air flow or other air flow can flow out or be blocked. Although the embodiments of the application have been shown and described above, it should be understood that the above embodiments are exemplary and cannot be understood as limiting the application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the application.

[0098] ​​The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application in any form. Although the present application has been disclosed with the preferred embodiments as above, it is not intended to limit the present application, and any skilled person in the art can make some changes or modifications to the above-mentioned technical content with the above-mentioned prompt as equivalent embodiments with equivalent changes, but as long as it does not deviate from the technical solution of the present application, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application are still within the scope of the present application.

Claims

1. A washing machine control method, wherein a drain outlet is provided at the bottom of the inner tub of the washing machine, a centrifugal valve is provided at the drain outlet, and a plurality of dehydration holes are provided at the top of the inner tub along the circumference of the inner tub, characterized in that, include: During the dehydration stage, the inner tub is controlled to rotate at different set speeds, the centrifugal valve opens the drain outlet due to centrifugal force, and / or the water in the inner tub flows towards the dehydration hole due to centrifugal force. The dehydration process includes a first dehydration stage and a second dehydration stage: In the first dehydration stage, the inner drum speed is controlled to accelerate to the first set speed and rotate. The centrifugal valve is opened by the centrifugal force and the drain outlet at the bottom of the inner drum is opened so that the water in the inner drum can flow out through the drain outlet. After the first dehydration stage, the inner drum speed is controlled to be no lower than the second set speed for the second dehydration stage, and the inner drum is controlled to rotate in an alternating manner of acceleration and deceleration so that the water in the inner drum is discharged through the dehydration hole at the opening of the inner drum by centrifugal force. Second set speed > First set speed.

2. The washing machine control method according to claim 1, characterized in that, The inner barrel wall has a slope.

3. The washing machine control method according to claim 1, characterized in that, In the second dehydration stage, the rotation speed of the inner drum is controlled from N. X Stepped acceleration to N Y Then N Y Decelerate to N M This causes the inner drum speed to increase to the third set speed in an alternating manner of acceleration and deceleration, where N X ≤N M <N Y .

4. A washing machine control method according to claim 3, characterized in that, In the second dehydration stage, the inner drum is controlled at a rotation speed of N. X N Y N M Run each set time T X T Y T M , among which, T M <T X And T M <T Y .

5. A washing machine control method according to claim 4, characterized in that, Control the inner tub at a rotation speed N M Run for a set time T M It is a constant value.

6. A washing machine control method according to claim 4, characterized in that, The dehydration process also includes a third dehydration stage: After the second dehydration stage, the inner drum speed is controlled to be no lower than the third set speed for the third dehydration stage, where the third set speed is greater than the second set speed.

7. A washing machine control method according to claim 6, characterized in that, In the third dehydration stage, the rotation speed of the inner drum is controlled to increase stepwise from the third set speed to the preset target speed, and the preset target speed is greater than or equal to the third set speed.

8. A washing machine control method according to any one of claims 1 to 7, characterized in that, Before controlling the inner tub to rotate at different set speeds during the dehydration stage, the process also includes: During the drainage phase, the inner tub speed is accelerated to the drainage set speed. The centrifugal valve opens the drain outlet at the bottom of the inner tub due to centrifugal force, allowing the water in the inner tub to flow out through the drain outlet. The first set speed < the drainage set speed < the second set speed.

9. A washing machine employing the control method according to any one of claims 1 to 8, comprising an inner tub, characterized in that: The inner tub has a drain outlet at the bottom, and a centrifugal valve is installed at the drain outlet. Several dehydration holes are provided at the top of the inner tub along its circumference.

10. A washing machine according to claim 9, characterized in that, The drain outlet is located at the bottom of the inner tub, which is inclined, and the dewatering hole is located at the opening of the inner tub.

11. A washing machine according to claim 10, characterized in that, The inner barrel wall gradually increases in diameter from the top and bottom towards the opening, so as to guide the water inside the inner barrel to flow towards the dewatering hole under the action of centrifugal force.

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