WASHING MACHINE AND WASHING METHOD USING AN INTEGRATED SENSING DEVICE FOR WATER LEVEL AND ROTATING UNBALANCE
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United States of America Patent
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Issued Date -
Mar 24, 2016
app pub date -
Dec 10, 2014
filing date -
Sep 22, 2014
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Abstract
Integrated sensing device for sensing both the water level and the rotating unbalance in a washing machine. The sensing device includes a magnetic sensor coupled to the casing of the washing machine and a magnetic body coupled to the washing tub of the washing machine. The sensed magnetic force indicates a position of the washing tub relative to the casing. While the washing water is supplied, the weight of the washing water causes the washing tub to move to a lower position and thereby the sensed magnetic force decreases. The water supply is shut off once the magnetic force decreases to a first preset value. Moreover, during a spin-drying process, if the sensed magnetic field decreases to a second predetermined value which indicates presence of rotating unbalance, the rotation is stopped and a preliminary spin-drying process is initiated.
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