Water Inlet Control Method of Drum Washing Machine

Abstract

The invention relates to a water feed control method for roller washing machines. The water feed control method includes the steps of 1, placing clothes into an inner roller of a roller washing machine, starting water feed until water level exceeds the bottom edge of the inner roller, and stopping water feed when a water level sensor senses that a water level frequency value is equal to L0; 2, keeping the water level at the bottom edge of the inner roller until water exceeding the bottom edge of the inner roller is absorbed by the clothes in the inner roller and the water level sensor detects the water level frequency value L1; and 3, continuing to feed water and finishing water feed until the water level sensor detects the water level frequency value L2, and then washing according to set washing procedures. The L2=L1-N, and the N is natural number. In a roller washing machine performance test process, main water feed of different washing machines of the same type or with sensors made of different manufacturers can be controlled accurately, the clothes can be cleaned effectively in moderate quantity of water, thus washing performance of the washing machines is improved greatly and energy consumption level thereof can also be increased.

Description

Technical field [0001] The invention belongs to the technical field of washing machines, and specifically relates to a method for correcting the frequency value of a washing machine water level sensor to obtain precise control of the washing water level. Background technique [0002] At present, one of the main factors affecting the washing performance of the drum washing machine is the main wash water intake, and the main wash water intake is closely related to the liquid level. The control of the drum washing machine's main washing water intake is mainly to determine a liquid level. The detection of the liquid level generally uses a frequency water level sensor. The working principle is that the change of the liquid level causes the air in the air chamber of the water level sensor to be compressed, pushing the magnetic core inside an inductor to produce displacement, thereby changing the inductance value, and then the external The LC oscillator generates a frequency that chang...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a control method for a drum washing machine, which solves the problem that the existing drum washing machine uses a fixed frequency value to control the water intake, and there is a large difference in the water intake between the washing machines, resulting in a large difference in water consumption, power consumption, and washing performance. technical problem

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