A self-cleaning washing machine drainage control method

Abstract

The invention discloses a water drainage and dehydration control method of a self-cleaning washing machine. Cleaning particles moving along water flow to clean the outer wall of an inner tub and the inner wall of an outer tub are arranged in the space between the inner tub and the outer tub of the washing machine, a water drainage instruction is received to turn on a water drainage valve; the water level is judged; the amount of the cleaning particles per unit volume of the water in the space is judged; the rotating speed of the inner tub is controlled to adjust the friction and collision frequency between the cleaning particles and the inner and outer tubs. The water drainage and dehydration process of the washing machine is divided into at least two control stages according to the water level, different inner tub rotation modes are set for each stage, and the rotation speed of the inner tub is higher at the stage of lower water level. At a control stage, an inner tub rotation control method comprises the steps of turning off the water drainage valve, controlling the inner tub to set rotation speed, turning on the water drainage valve after rotation for set time, controlling the inner tub to rotate at the other set rotation speed, judging the water level, and executing a next control stage when the water level corresponding to the next stage is met. The control method is simple, dirt on the walls of the tubs of the washing machine can be completely removed, a washing environment is kept clean, secondary pollution is completely eradicated, and clothes cleaning rate is improved.

Description

technical field [0001] The invention relates to the field of washing machines, in particular to a control method for a washing machine, in particular to a control method for draining and dehydrating a self-cleaning washing machine. Background technique [0002] Existing washing machines use a motor to drive the pulsator at the bottom of the inner tub to alternately rotate clockwise and counterclockwise to drive the clothes to roll and rotate, so that the clothes and clothes, the clothes and the pulsator, and the clothes and the barrel rub against each other to achieve the purpose of washing the clothes. [0003] When doing laundry, the water contains various solid particles, such as: scale formed by calcium ions and calcium carbonate in water, free matter in laundry detergent soap, lint from washed clothes, and particles left by the human body on the clothes to be washed. Oily proteins and various organic residues, bacteria and other substances introduced by the laundry form...

AI Technical Summary

Problems solved by technology

[0006] 1. This method only performs bucket cleaning when the user selects the bucket cleaning program and drains water for the last time. The cleaning intensity is poor, and it cannot eliminate the root cause of dirt formation, that is, the dirt accumulated in each laundry

[0007] 2. When draining water, when the water level drops from the first set water level to the second set water level after opening the drain valve, the barrel is still, and the dirt in the sewage can still adhere to the wall of the barrel, and the cleaning is not thorough

[0008] 3. This method only uses the impact force of the water flow driven by the inner barrel to clean the barrel wall, and it is difficult to guarantee the effect of cleaning the barrel

However, when this solution drains water, controlling the low-speed rotation of the inner barrel does not drive the cleaning particles to collide with the barrel wall. It is only to reduce the cleaning particles remaining between the inner and outer barrels, so that the cleaning particles can be completely collected and reduce the collision noise caused by dehydration. It is also impossible to strengthen the cleaning of the bottom wall of the inner and outer barrels and the lower part of the peripheral wall

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