Dehydration control apparatus and method for washing machine

Abstract

The present invention discloses a dehydration control apparatus and method for a washing machine. The dehydration control apparatus for the washing machine includes: a storing unit for storing reference unbalance quantities according to each load quantity; and a control unit for detecting a load quantity and an unbalance quantity by accelerating or decelerating a motor of the washing machine, comparing a reference unbalance quantity from the stored reference unbalance quantities that correspond to the detected load quantity with the detected unbalance quantity, and determining dehydration completion according to the comparison result.

Description

BACKGROUND OF THE INVENTION [0001] This application claims the benefit of Korean Patent Application No. 2005-82319, filed Sep. 5, 2005, which is hereby incorporated by reference for all purposes as if fully set forth herein. [0002] 1. Field of the Invention [0003] This application claims the benefit of Korean Patent Application No. 2005-82319, filed Sep. 5, 2005, which is hereby incorporated by reference for all purposes as if fully set forth herein. [0004] The present invention relates to a washing machine, and more particularly, to a dehydration control apparatus and method for a washing machine which can sense variations of a dehydration quantity and apply different reference unbalance quantities according to the varied load quantities. [0005] 2. Discussion of the Related Art [0006] Generally, a washing machine applies a mechanical operation, such as friction or vibration, to the laundry put in a washing solution, thereby separating contaminants from the laundry. [0007] For this,...

AI Technical Summary

Benefits of technology

[0023] An advantage of the present invention is to provide a dehydration control apparatus and method for a washing machine which can restrict noise and vibration resulting from mis-application of a reference unbalance quantity and reduce a dehydration entering time, by sensing variations of a dehydration quantity and applying different reference unbalance quantities according to the varied load quantities.

Problems solved by technology

When the laundry is not evenly distributed in the washing machine, namely, when an unbalance of the laundry is generated, serious vibration and noise occur in the dehydration operation.

When the speed of the motor reaches a preset dehydration speed, the speed of the motor is decreased after a predetermined time, and an unbalance quantity at point C of FIG. 2 is detected.

However, the related art dehydration control apparatus and method for the washing machine determine the reference unbalance quantity by using the first sensed load quantity.

Accordingly, when the first sensed reference unbalance quantity is an error, noise and vibration are generated in the dehydration operation.

In addition, since a reattempt number for dehydration acceleration is increased by strictly applying the standard, it takes a long time to enter into the dehydration stage.

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