Washing machine water level control method and device and washing machine

Abstract

The invention belongs to the technical field of washing machines, and particularly relates to a washing machine water level control method and device and a washing machine. The invention aims to solve the problem of low water level control accuracy in the prior art. The washing machine water level control method comprises the steps of obtaining a frequency value corresponding to a reference gear and a target water level difference between a target gear and the reference gear; determining a target frequency difference corresponding to the target water level difference according to a corresponding relation between the water level difference and the frequency value difference under the same gear switching; determining a frequency value corresponding to the target gear according to the target frequency difference; and controlling the water quantity in a washing barrel, and stopping controlling the water quantity until the frequency value corresponding to the target gear is met. The target frequency difference corresponding to the target water level difference is determined according to the corresponding relation between the water level difference and the frequency value difference under the same gear switching which is not easily influenced by the environment and is relatively stable, and the water amount in the washing barrel can be accurately controlled.

Description

technical field [0001] The invention relates to the technical field of washing machines, in particular to a washing machine water level control method and equipment, and a washing machine. Background technique [0002] In the process of washing, rinsing and dehydrating the clothes, the washing machine needs to add water or drain water. In this process, in order to ensure the normal operation of the washing machine and improve the washing effect, it is necessary to control the amount of water added or the amount of water removed, that is, the washing machine. The water level in the barrel can be accurately controlled, and a water level sensor can usually be used for water level detection and control. [0003] In the prior art, before the washing machine leaves the factory, the water level sensor will calibrate the corresponding frequency values ​​for the water levels of different gears. When the water level sensor detects the frequency value corresponding to the target gear d...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned problems in the prior art, that is, in order to solve the unreasonable problem of defrosting start control in the prior art

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