Method of controlling laundry treatment machine

Details Method of controlling laundry treatment machine Method of controlling laundry treatment machine

2011-04-12

2011-04-12

Barr, Michael (Department: 1712)

Bleaching and dyeing; fluid treatment and chemical modification

Fluid treatment

Manipulation of liquid

Reexamination Certificate

active

07921492

ABSTRACT:
A method of controlling a laundry treatment machine is provided in which a siphon phenomenon may be detected before performing a requested laundry treatment operation by performing an intermittent water supply operation and detecting a variation, if any, in a water level in a tub of a washing machine. Such a method may prevent was water form being discharged due to a siphon phenomenon, prevent the waste of wash water, and minimize the amount of time taken to discharge wash water and perform a washing operation. Such a method may also prevent the waste of detergent by using a water supply valve for a pre-washing operation to detect the siphon phenomenon. Such a method may also prevent a water supply failure from being mistaken as a siphon phenomenon by keeping a water supply valve open for a predefined amount of time and then detecting a variation, if any, in the water level in the tub.

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patent: 05-309194 (1993-11-01), None
German Office Action issued in German Patent Application No. 10 2007 052 184.9-26 dated Aug. 24, 2010 (full English translation).

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