Drum type washing machine

Abstract

The invention provides a drum type washing machine equipped with a displacement detecting means for detecting the displacement of a water tub with accuracy so as to cause neither abnormal vibration nor abnormal noise by the vibration of the water tub holding a rotating drum, due to the unbalance or the like of a washing. A water tub unit 7 is supported in a position closer to the front face side than the center-of-gravity position by a vibration control damper. The water tub unit 7 is disposed in a swingable manner in a washing machine casing 6, and a displacement sensor 36 is disposed on the back face side rather than the vibration control damper 70 and on or near a hanging line from the center-of-gravity position of the water tub unit 7. Since the displacement of the water tub unit 7 is accurately detected by the displacement sensor 36, operation control causing neither abnormal vibration nor abnormal noise can be performed.

Description

technical field [0001] The invention relates to a drum type washing machine which completes various operation processes such as washing, rinsing and dehydration by driving a rotary drum containing laundry to rotate. Background technique [0002] In the front-loading washing machine, since the rotating drum is installed in the tub so that its axis of rotation is in the horizontal direction or the front part is tilted up from the horizontal direction, if the rotating drum is loaded with laundry and then rotated, washing Things and water will be partial to the lower part, and it is easy to vibrate. In particular, when the rotating drum is rotated at a high speed for dehydration, the rotating drum contains laundry that has just completed the washing operation and still contains water, and the type, texture, or shape of the laundry is very different. The laundry is easily gathered / biased to one side in the rotating drum during the rotation of the operation. When the laundry is ...

AI Technical Summary

Problems solved by technology

But in this way, there will be problems such as issuing unnecessary over-vibration warnings and stopping the rotation needlessly.

[0006] In addition, if the operation method of using the sensor to detect the vibration of the tub is used, when the operation of balancing the clothes by rotating at a low speed is performed, even if the laundry is not well adhered to the inner surface of the drum, there will be vibrations in the rotating drum. Unbalanced, but because the amplitude of the vibration is not large, it cannot be detected as abnormal vibration; only after the rotating drum rotates at a high speed and the vibration becomes very large, the abnormal vibration is detected, so it cannot be detected before entering the high-speed rotation Detect whether abnormal vibration has occurred

Therefore, during the period from the occurrence of abnormal vibration to the stop of the rotation, the laundry and the washing machine may be damaged, and there is also a problem that a long period of time until the rotation of the rotary drum stops is wasted unnecessarily.

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