CN105088643A - Washing machine drainage control method - Google Patents

Abstract

The invention discloses a washing machine drainage control method, which belongs to the field of laundry device control and is designed to solve the problem of poor automatic cleaning effect of the filter screen of the existing washing machine. The drainage control method of the washing machine of the present invention is to control the rotation speed of the inner tub and/or the pulsator during the drainage process, and control the flow rate of the washing liquid by controlling the rotation speed of the inner tub and/or the pulsator to backwash and clean the filter screen. The washing machine drainage control method of the present invention improves the effect of cleaning the filter screen; the rotation of the inner barrel and/or the pulsator also increases the discharge speed of the washing liquid, which can also enhance the cleaning effect on the filter screen. When the water level is low, the inner bucket and/or the pulsator rotates at a higher speed. At this time, a wave-like high-speed rotating water flow containing a large number of bubbles will be generated in the inner bucket. The high-speed wave-like bubble water flow can wash the lint adhered to the filter net down to realize automatic cleaning of the filter.

Description

Washing machine drainage control method

technical field

The invention relates to a washing machine drainage control method.

Background technique

The washing machine generates or separates lint, debris, small impurities, etc. during the washing process. These substances are easy to stick to the clothes and affect the cleaning effect of the clothes.

In order to solve this problem, a water hole is opened on the bottom side of the inner barrel of the existing washing machine, and a filter screen is installed at the bottom of the inner barrel. The lint is filtered through the filter, the lint is collected, and the lint is automatically removed.

The effect of the filter screen in this washing machine structure is remarkable, but because the water flow rate of the reverse flushing filter screen is weak when the pulsator washing machine is drained, it is difficult to thoroughly rinse the filter screen. After a long time, it is easy to cause the blockage of the filter screen and affect the collection effect of lint.

Contents of the invention

An object of the present invention is to provide a washing machine drainage control method capable of thoroughly cleaning the filter.

Another object of the present invention is to provide a washing machine drainage control method with high cleaning efficiency for the filter screen.

For reaching this purpose, the present invention adopts following technical scheme:

A washing machine drainage control method, the method is to control the rotation speed of the inner tub and/or the pulsator during the drainage process, and control the flow rate of the washing liquid by controlling the rotation speed of the inner tub and/or the pulsator to backwash and clean the filter screen.

In particular, the method is to set the rotation speed of the inner tub and/or the pulsator according to the height of the water level in the washing machine during the drainage process, so that the inner tub and/or the pulsator rotate at different speeds at different water levels.

Further, the method includes the following specific steps:

Step 1. Set N calibration values for the water level in the washing machine, where N is a positive integer greater than or equal to 1; 1≤i≤N, assign i=1;

Step 2. Open the drain valve and start draining water;

Step 3. Determine whether the current water level value is lower than or equal to the set water level value Hi, and if so, go to step 4; otherwise, continue to detect the current water level value and judge until the current water level value is lower than or equal to the set water level value Hi and go to step 4 ;

Step 4, controlling the rotation speed of the inner barrel and/or the pulsator to be Vi;

Step 5, determine whether i is equal to N, if so, go to step 6; otherwise, i=i+1, go to step 3;

Step 6, end.

In particular, the method further includes: when the water level value is lower than or equal to the height value of the minimum water level sensor, starting to perform a dehydration operation; and stopping the motor after the dehydration operation is completed.

In particular, when the water level is lower than or equal to the set value Hs, the drain valve is closed, and the inner barrel and/or the pulsator rotates according to the set speed Vs; after turning Ts for a time, the drain valve is reopened.

In particular, set N=2; when i=1, set the water level value H1=the bottom edge of the inner barrel+10～20cm, and the rotation speed is V1=50～100rpm; when i=2, set the water level value H2 =The bottom edge of the inner barrel+2～5cm, the rotation speed is V2=120～180rpm.

Further, when i=1, set the water level value H1=the bottom edge of the inner bucket+15cm, and the rotation speed is V1=90rpm; when i=2, set the water level value H2=the bottom edge of the inner bucket+3cm, and the rotation speed is V2 = 150 rpm.

In particular, when i=1, the inner barrel and/or the pulsator rotates forward, when i=2, the inner barrel and/or the pulsator reverses; or, when i=1, the inner barrel and/or the pulsator rotates reversely, when i= At 2 o'clock, the inner barrel and/or the pulsator rotates forward.

The drainage control method of the washing machine of the present invention is to control the rotating speed of the inner tub and/or the pulsator during the drainage process, and control the flow rate of the lotion by controlling the rotating speed of the inner tub and/or the pulsating wheel to strengthen the washing force of the filter net and improve the cleaning of the filter net. At the same time, the rotation of the inner barrel and/or the pulsator also increases the discharge speed of the washing liquid, which can also enhance the cleaning effect on the filter screen. When the water level is low, the inner bucket and/or the pulsator rotates at a higher speed. At this time, a wave-like high-speed rotating water flow containing a large number of bubbles will be generated in the inner bucket. The high-speed wave-like bubble water flow can wash the lint adhered to the filter net down to realize automatic cleaning of the filter.

Description of drawings

Fig. 1 is a structural schematic diagram of a washing machine using the washing machine drainage control method of the present invention;

Fig. 2 is a schematic diagram of water flow during the washing process of the washing machine shown in Fig. 1;

Fig. 3 is a schematic diagram of water flow in the washing machine shown in Fig. 1 during the drainage process;

Fig. 4 is a flowchart of a washing machine drainage control method according to a preferred embodiment 1 of the present invention;

Fig. 5 is a flowchart of a washing machine drainage control method according to a third preferred embodiment of the present invention.

Labeled in the figure:

1. Outer barrel; 2. Inner barrel; 3. Wave wheel; 4. Filter; 5. Motor drive shaft; 6. Drainage pipe; 7. Balance ring; 21. Water holes on the side wall of the inner barrel; 22. Water outlet at the bottom of the inner barrel Hole; 23, the bottom of the inner barrel; 24, the flange at the bottom of the inner barrel; 31, the water hole of the impeller.

Detailed ways

The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

In order to better collect and automatically remove lint, the invention provides a washing machine. The washing machine at least includes a box body, an outer tub, an inner tub, a pulsator, a motor drive device, a computer board controller, a water inlet system, and a drainage system. Wherein, as shown in Figure 1, the port of the inner barrel 2 is provided with a balance ring 7, and the side wall is provided with an inner barrel side wall water hole 21; the side of the inner barrel bottom 23 is provided with an inner barrel bottom water hole 22, and the bottom is provided with an inner barrel Bottom flange 24 and filter screen 4; Inner bucket bottom flange 24 and filter screen 4 are installed together.

As shown in Figure 2, during the laundry process, the pulsator 3 is driven by the motor drive shaft 5 to rotate forward and reverse alternately. Between the bottom of the inner bucket 23 --> water hole 22 at the bottom of the inner bucket located on the side of the bottom of the inner bucket --> between the inner bucket 2 and the outer bucket 1; part of the water between the inner bucket 2 and the outer bucket 1 returns to the pulsator through the filter 4 3 and the bottom 23 of the inner bucket, the other part is convective with the water in the inner bucket 2 through the water hole 21 on the side wall of the inner bucket.

The washing machine is similar to an impeller water pump, which continuously pumps the water in the inner tub 2 to between the inner tub 2 and the outer tub 1 . The lint flowing through the filter screen 4 is blocked at the bottom 23 of the inner barrel, and most of the other lint between the inner barrel 2 and the outer barrel 1 is also blocked by the inner barrel 2 and the outer barrel 1 because of the small water hole 21 on the side wall of the inner barrel. Between the outer barrel 1.

As shown in FIG. 3 , the water in the inner barrel 2 enters between the inner barrel 2 and the outer barrel 1 through the water hole 22 at the bottom of the inner barrel and the filter screen 4 during the drainage process. Wherein, the water flow discharged from the filter screen 4 can carry out recoil cleaning to the filter screen 4 . The thread scraps blocked between the inner tub 2 and the outer tub 1 are discharged to the outside of the washing machine through the drain pipe 6 together with the water flow, so as to realize automatic removal of the thread scraps.

This washing machine utilizes the water hole 22 at the bottom of the inner tub and the filter screen 4 arranged on the bottom of the inner tub 23 to automatically collect and remove the lint, which improves the filtering effect of the lint. But because the water flow rate of reverse flushing filter screen 4 is relatively weak when the wave wheel washing machine drains, it is difficult to rinse the filter screen 4 thoroughly. In order to solve this problem, it is necessary to change the control method when the washing machine drains water, so as to increase the strength of backwashing the filter screen 4 .

Preferred embodiment one:

This preferred embodiment provides a washing machine drainage control method. The method is to control the rotation speed of the inner tub and/or the pulsator during the drainage process, and control the flow rate of the washing liquid by controlling the rotation speed of the inner tub and/or the pulsator to backwash and clean the filter screen. Specifically, during the drainage process, the rotation speed of the inner tub and/or the pulsator is set according to the water level in the washing machine, so that the inner tub and/or the pulsator rotate at different speeds at different water levels.

As shown in Figure 4, the method comprises the following specific steps:

Step 1. Set two calibration values for the water level in the washing machine, assigning i=1.

Step 2. The computer board program controls to open the drain valve and start draining.

Step 3. Determine whether the current water level value is lower than or equal to the set water level value Hi, and if so, go to step 4; otherwise, continue to detect the current water level value and judge until the current water level value is lower than or equal to the set water level value Hi and go to step 4 .

Step 4, control the rotation speed of the inner barrel 2 and/or the pulsator 3 to be Vi, control the flow rate of the lotion by controlling the rotating speed of the inner barrel 2 and/or the pulsator 3, and increase the washing force of the filter screen 4; The discharge velocity of water flow has strengthened the backwash capacity to filter screen 4 equally.

Step 5. Determine whether i is equal to 2, if yes, go to step S1; otherwise, i=i+1, go to step 3.

Step S1 , determine whether the water level sensor is reset, and if so, go to step S2; otherwise, go to step 4; the reset water level refers to the water level where the water level sensor detects no water.

Step S2, controlling the rotation speed of the inner tub 2 and/or the pulsator 3 to be the dehydration speed. The dehydration speed is a relatively high speed. At this time, a wave-like high-speed rotating water flow containing a large number of bubbles will be generated in the inner barrel 2, and the lint adhering to the filter screen 4 will be washed down by the high-speed wave-like bubble water flow. , to realize the automatic cleaning of the filter screen 4.

Step S3, judging whether the set dehydration time has been reached, if yes, go to step S4; otherwise, go to step S2.

Step S4, the program of the computer board stops driving the motor, and the inner tub 2 of the washing machine is allowed to run for a period of time according to the inertia, and then brake and stop the machine. After stopping, the washing machine can continue to rinse or finish laundry.

When the washing machine executes the above drainage control method, the set water level value H1 is 10-20 cm higher than the edge of the bottom 23 of the inner tub, and the rotation speed is V1=50-100 rpm; the set water level value H2=23 cm higher than the edge of the inner tub bottom, The speed is V2=120～180rpm.

Preferably, the set water level value H1 = 15 cm high at the edge of the bottom 23 of the inner bucket, and the rotation speed is V1 = 90 rpm; the set water level value H2 = 3 cm high at the edge of the bottom 23 of the inner bucket, and the rotation speed is V2 = 150 rpm.

Preferred embodiment two:

This preferred embodiment provides a washing machine drainage control method, which is basically the same as the first preferred embodiment.

The difference is that: when the water level is lower than or equal to the set value Hs, the drain valve is closed, and the inner tub and/or the pulsator rotates at the set speed Vs; after turning Ts for a time, the drain valve is reopened. The water level value can be specifically set according to needs. Temporarily closing the drain valve allows the existing washing liquid in the bucket to flush the filter screen for a longer period of time, and the cleaning effect on the filter screen is better.

When i=1, the inner barrel and/or the pulsator rotate forward, when i=2, the inner barrel and/or the pulsator reverse; or, when i=1, the inner barrel and/or the pulsator reverse, when i=2, the inner barrel and/or the pulsator is running forward. The forward and reverse rotation of the inner barrel and/or the pulsator can drive the washing liquid in the barrel to do forward and reverse swirl, which can wash the filter screen in all directions and improve the cleaning effect of the filter screen.

Preferred embodiment three:

This preferred embodiment provides a washing machine drainage control method. As shown in Figure 5, the method comprises the following specific steps:

Step 1. Set N calibration values for the water level in the washing machine, where N is a positive integer greater than or equal to 1; 1≤i≤N, assign i=1;

Step 2. Open the drain valve and start draining water;

Step 3. Determine whether the current water level value is lower than or equal to the set water level value Hi, and if so, go to step 4; otherwise, continue to detect the current water level value and judge until the current water level value is lower than or equal to the set water level value Hi and go to step 4 ;

Step 4, controlling the rotation speed of the inner barrel and/or the pulsator to be Vi;

Step 5, determine whether i is equal to N, if so, go to step 6; otherwise, i=i+1, go to step 3;

Step 6, end.

The value of N can be set according to specific needs, subject to cleaning the filter net.

Claims (8)

1. a washing machine drainage control method, is characterized in that, described method is the rotating speed of bucket and/or impeller in controlling in drainage procedure, controls the flow velocity of washing lotion with reversed-cleaning filter net by the rotating speed controlling interior bucket and/or impeller.

2. washing machine drainage control method according to claim 1, it is characterized in that, described method is the velocity of rotation setting interior bucket and/or impeller in drainage procedure according to the height of washing machine water level, and interior bucket and/or impeller when different heights of water level are rotated with different speed.

3. washing machine drainage control method according to claim 2, is characterized in that, described method comprises following concrete steps:

Step 1, the water level in washing machine is arranged N number of calibration value, N be more than or equal to 1 positive integer; 1≤i≤N, assignment i=1;

Step 2, opening water discharge valve, start draining;

Whether step 3, judgement current level value, lower than equaling designated water level value Hi, are go to step 4; Otherwise continue detect current level value and judge, until current level value goes to step 4 lower than equaling designated water level value Hi;

In step 4, control, the velocity of rotation of bucket and/or impeller is Vi;

Whether step 5, judgement i equal N, are go to step 6; Otherwise i=i+1, goes to step 3;

Step 6, end.

4. according to the arbitrary described washing machine drainage control method of claims 1 to 3, it is characterized in that, described method also comprises: when water level value is lower than when equaling the height value of lowest water level sensor, start to perform dehydrating operations; Dehydrating operations terminates rear stopping motor.

5. according to the arbitrary described washing machine drainage control method of claims 1 to 3, it is characterized in that, when water level value is lower than when equaling setting value Hs, close draining valve, interior bucket and/or impeller rotate according to setting speed Vs; After rotating the Ts time, reopen draining valve.

6. washing machine drainage control method according to claim 3, is characterized in that, setting N=2;

As i=1, in designated water level value H1=, the bottom sides of bucket is along+10 ~ 20cm, and velocity of rotation is V1=50 ~ 100rpm;

As i=2, in designated water level value H2=, the bottom sides of bucket is along+2 ~ 5cm, and velocity of rotation is V2=120 ~ 180rpm.

7. washing machine drainage control method according to claim 6, is characterized in that, as i=1, in designated water level value H1=, the bottom sides of bucket is along+15cm, and velocity of rotation is V1=90rpm;

As i=2, in designated water level value H2=, the bottom sides of bucket is along+3cm, and velocity of rotation is V2=150rpm.

8. washing machine drainage control method according to claim 6, is characterized in that, as i=1, interior bucket and/or impeller rotate forward, interior bucket and/or impeller reversion as i=2;

Or interior bucket and/or impeller reversion as i=1, as i=2, interior bucket and/or impeller rotate forward.