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    • 9. 发明申请
    • WASHING MACHINE
    • 洗衣机
    • US20120103025A1
    • 2012-05-03
    • US13382260
    • 2010-07-23
    • Kei NambuKeiko YasuiKatsunori Zaizen
    • Kei NambuKeiko YasuiKatsunori Zaizen
    • D06F33/02D06F29/00
    • C02F1/42A47L15/4229B01J39/07B01J39/09B01J49/06B01J49/75C02F1/66C02F5/025C02F2001/425D06F39/007
    • A washing machine includes a washing tub, a water tub, a drive unit, a feed-water unit, a drain unit, a water softening unit, a pH increasing unit, a pH decreasing unit, and a control unit. The water softening unit is disposed between the feed-water unit and the water tub, and is filled with a weak acid cation exchange material having weak acidic cation exchange groups with a pH from 7.5 to 14 at point of zero charge. The pH increasing unit increases the pH of washing water, and the pH decreasing unit decreases the pH of the washing water. The control unit performs the following operations: controlling the pH increasing unit to increase the pH of the washing water while the washing water is being fed; introducing the washing water with the increased pH to the water softening unit to decrease the hardness of the washing water; introducing the washing water with the decreased hardness to the washing tub; controlling, after the washing water is fed, the pH decreasing unit to decrease the pH of the washing water to a value of 5.5 to 7.0; and introducing the washing water with the decreased pH to the water softening unit.
    • 洗衣机包括洗涤桶,水桶,驱动单元,给水单元,排水单元,水软化单元,pH增加单元,pH降低单元和控制单元。 水软化单元设置在给水单元和水桶之间,并且填充有具有弱酸性阳离子交换基团的弱酸阳离子交换材料,在零电荷点处pH为7.5至14。 pH增加单元增加洗涤水的pH,并且pH降低单元降低洗涤水的pH。 控制单元执行以下操作:控制pH增加单元以在洗涤水进料期间增加洗涤水的pH; 将具有增加的pH的洗涤水引入水软化单元以降低洗涤水的硬度; 将具有降低的硬度的洗涤水引入洗涤桶; 在洗涤水进料后控制pH降低单元将洗涤水的pH降至5.5-7.0的值; 并将具有降低的pH的洗涤水引入水软化单元。