Water level monitoring method of washing machine and full-automatic washing machine

Abstract

The invention relates to a water level monitoring method of a washing machine and a washing machine using the same. The water level monitoring method of the washing machine comprises the following steps of: setting a washing water level and an overflow water level according to clothes quantity; detecting and judging whether the water level reaches the overflow water level; and when the water level reaches the overflow water level, stopping a motor and automatically draining. When the frequency of reaching the overflow water level exceeds the set value, the washing machine is integrally in power failure. The technical scheme provided by the invention solves the problem of water-carrying rotation of an inner barrel of the washing machine through monitoring the overflow water level, prevents water from overflowing outside the barrel, and improves the safety and the reliability of using the washing machine.

Description

technical field [0001] The invention relates to a washing machine, in particular to a method for automatically monitoring water level and a fully automatic washing machine using the method. Background technique [0002] A fully automatic washing machine generally performs washing, rinsing, and dehydration procedures according to a set program. The washing program / rinsing program includes a water intake process, a washing / rinsing process, and a draining process. Miniature washing machines are very popular in the market. There is a kind of miniature washing machine with a floating barrel structure, which uses the floating barrel to realize the conversion between washing and dehydration. In the washing state, the inner barrel floats up under the buoyancy of the water and disengages from the clutch device. , the inner barrel is in a free state, and only the pulsator is connected with the input shaft at this time, and the forward and reverse washing is realized under the drive of...

AI Technical Summary

Problems solved by technology

However, when there is an abnormal situation, such as the air cavity under the inner barrel is broken and leaked or there is a lot of oil on the shaft, the inner barrel cannot float normally. When the water is filled to the set water level, the motor will run. , the pulsator and the inner barrel will run at the same time, because the diameter of the pulsator is relatively small in the micro washing machine, so when the speed of the pulsator reaches more than 200rpm, the washed clothes can be turned over normally, and the inner barrel runs at a speed of more than 200rpm The centrifugal force generated will cause the water to rise along the wall of the outer barrel, causing the water to flow out from between the outer barrel and the outer barrel cover, soaking the floor and causing safety hazards.

[0003] At present, there are mainly two ways to check whether the floating bucket has floated up. One is not to judge, and try to avoid the situation that the floating bucket cannot float up by strengthening the strength of the air cavity of the floating bucket, the volume of the air cavity, and the smoothness of the shaft. This solution increases cost and space, and cannot avoid occasional failures

Another solution is to judge by the change of the motor current. This solution also has certain shortcomings, that is, in the normal washing state, if the clothes are too hard or entangled, the current will increase and misjudgment will occur. problem, leading to overprotective

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