Washing machine control method and washing machine

Abstract

A control method for a washing machine, the washing machine includes a housing, an outer cylinder, a drum for holding clothes, a drain pump for draining water, and a water level detection device for detecting water volume, the control method includes a washing program, a rinsing program, and a dehydration process. program, wherein the dehydration program is divided into a drainage process and a dehydration process. During the drainage process, the load detection of the drainage pump is carried out and the detection and control process of controlling the switching action of the drainage pump is performed according to the detection results. When the current of the drainage pump jumps and the difference reaches the set value △I, stop the working time of the drainage pump, stop the time T or detect that the water level exceeds the minimum set value, continue to drain and detect, and complete the dehydration program in this cycle. The invention also relates to a washing machine using the method. By improving the control program and circuit, the invention has simple structure, low cost, easy implementation, effectively solves the problem of high noise of the washing machine, meets user needs, and is more humanized.

Description

technical field [0001] The invention relates to a washing machine control method, in particular to a control method for reducing drainage noise of a drum washing machine and a washing machine using the method. Background technique [0002] Household electric washing machines are divided into pulsator washing machines, drum washing machines, and stirring washing machines. The drum washing machines were first used in Europe. With the changes in people's consumption levels and concepts, drum washing machines are more and more widely accepted by Asians. At the same time, with the continuous improvement of the social living environment and the continuous improvement of the quality of life of washing machine users, the quiet living environment has attracted more and more attention. The noise of home appliances has also become one of the important problems to be solved by various home appliance manufacturers, among which the mute index of washing machines is constantly improving. ...

AI Technical Summary

Problems solved by technology

The "hum---hum" cycle noise caused by the impact of the water flow in the water pipe on the drain pump cannot be completely resolved.

After the water in the drum washing machine is emptied, because the drainage pump has a lift of about 1.2 meters, the water stored in this section of the water pipe cannot be discharged. Instead, under the action of gravity, it continuously hits the impeller of the drainage pump downwards and is thrown out by the impeller again. This will cause a "hum-hum" noise. The water level switch device is used in the existing low-end washing machines, and the drain pump can only work during the entire drying process. Even if the water level sensor is used in the high-end washing machines, although it can When the water level is low, the lowest water level is judged, and the drainage pump is stopped.

However, the signal of the sensor is usually disturbed and drifts, which is very easy to misjudgment, and the result is either still noisy, or the drainage is not clean, which cannot meet the low noise requirements of users

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