260 results about "Well drainage" patented technology

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.