Method for controlling and sensing an unbalance condition...

Details Method for controlling and sensing an unbalance condition... Method for controlling and sensing an unbalance condition...

2004-07-22

2008-08-19

Perrin, Joseph L (Department: 1792)

Bleaching and dyeing; fluid treatment and chemical modification

Fluid treatment

Manipulation of liquid

Reexamination Certificate

active

07412740

ABSTRACT:
A washing machine and a control method thereof sensing an unbalance condition occurring during a spin-dry cycle. The washing machine includes a controller controlling a speed of a motor in accordance with a weight of laundry contained in a rotating tub, upon wrapping the laundry at an initial stage of the spin-dry cycle. A gradient of the motor speed in a laundry wrapping process is determined, depending on the weight of the laundry. Accordingly, to greatly reduce a time prior to a main spin-dry process is possible, while preventing abnormal vibrations from being generated when a rotating speed of the rotating tub reaches a speed, at which resonance occurs.

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patent: 2001-224889 (2001-08-01), None
patent: 2001-334096 (2001-12-01), None
Korean Patent Abstract Publication No. 1002297180000, Publication Date Aug. 18,1999.

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