WASHING MACHINE

To prevent increase in power consumption during drainage and dewatering and to prevent idling noise of a drainage pump.SOLUTION: From torque information while a motor 12 rotates one circle detected by motor torque detection means 45 during a clothing agitation operation in a washing step and a rinsi...

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Hauptverfasser: HAGA HIDEO, SHIMOBE SHIZUO
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:To prevent increase in power consumption during drainage and dewatering and to prevent idling noise of a drainage pump.SOLUTION: From torque information while a motor 12 rotates one circle detected by motor torque detection means 45 during a clothing agitation operation in a washing step and a rinsing step, in the case where (torque maximum value-torque minimum value)/(central value between the maximum value and minimum value) exceeds a predetermined value, it is determined that a cloth amount is small, and the rotational frequency of a drainage pump 20 is lowered to decrease the drainage amount, and also, based on the value of (torque maximum value-torque minimum value)/(central value of the maximum value and the minimum value), operation time of the drainage pump 20 is set and the operation is performed. With this constitution, power consumption is not increased, and uncomfortable idling noise of the drainage pump 20 can be prevented from occurring.SELECTED DRAWING: Figure 2 【課題】排水、脱水時に、電力消費を増加させず、排水ポンプの空転異音も防止すること。【解決手段】洗い、および、すすぎ行程において、衣類攪拌動作中の、モータトルク検知手段45が検知したモータ12が1回転する中でのトルク情報から、(トルク最大値−トルク最小値)/(最大値と最小値の中央値)が、所定値を上回っている場合に、布量が少量だと判定し、排水ポンプ20の回転数を下げて排水量を低下させるとともに、(トルク最大値−トルク最小値)/(最大値と最小値の中央値)の値に基づき、排水ポンプ20の動作時間を設定して運転する構成とすることにより、電力消費を増加させることなく、また、排水ポンプ20の不快な空転異音の発生を防止することができる。【選択図】図2