Patent ID: 8997288
Filing Date: 2015-04-07
Classification: A47L,D06F,Y10T

Abstract:
1. A method of controlling drainage of water from a washing machine, comprising: draining contaminated water from a tub of the washing machine using a drain hose; after draining the contaminated water, determining whether any of the contaminated water is at a first preset point in the drain hose; when the contaminated water is at the first preset point in the drain hose, supplying clean water into the washing machine (i) to a second preset point in the drain hose above the first preset point or (ii) for a preset period of time and, after supplying the clean water, draining the clean water from the washing machine; and after draining the clean water, rinsing laundry in the washing machine, wherein the clean water is supplied to the second preset point of the drain hose, wherein a first water level sensor determines whether any of the contaminated water is at the first preset point in the drain hose, and wherein a second water level sensor determines whether any of the contaminated water is at the second preset point in the drain hose.