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US 8,997,288 B2Granted
Method of controlling drainage of wash water remaining in a washing machine
AssigneeDaewoo Electronics Co., Ltd.
InventorJao Bang Kim
Life of this patent
Estimating the term…
Abstract
Disclosed herein is a method of controlling drainage of wash water remaining in a washing machine. The method includes draining wash water from a tub to an outside of the washing machine, supplying wash water into the washing machine after the draining wash water, and re-draining the wash water to the outside of the washing machine after the supplying wash water.
Claims13
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.
5 more elements
A washing machine, comprising:
- a tub configured to contain contaminated wash water and clean rinse water;
- a drain hose at a bottom of the tub;
- a first water level sensor at a first preset point in the drain hose;
- a second water level sensor at a second preset point in the drain hose above the first preset point;
- a controller configured to determine whether any contaminated wash water is at the first preset point in the drain hose after the contaminated wash water is drained from the tub, and when the contaminated wash water is at the first preset point in the drain hose, supply clean water into the tub to the second preset point in the drain hose, drain the clean water from the tub, then supply the clean rinse water to the tub;
- and
- a drain pump that drains the contaminated wash water, the clean water, and the clean rinse water from the tub.
4 more elements
Dependencies are inferred from the claim text.