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    • 4. 发明申请
    • 一种活塞往复运动挤压吸涨式洗衣机
    • WO2009024042A1
    • 2009-02-26
    • PCT/CN2008/071609
    • 2008-07-10
    • 张庆久
    • 张庆久
    • D06F15/00D06F5/04
    • D06F5/04D06F15/00
    • A pressure suction washing machine using the reciprocal movement of a piston consists of an inner tub (2), an outer tub (1) and a piston (3). On washing, the tub is filled with water and the clothes are put under the piston of inner tub. When the piston moves down, the water inside the inner tub is subject to squeeze so as to flow into the outer tub through a number of water permeable perforations disposed on the walls and the bottom of the inner tub. When the clothes move down and reach the bottom of the inner tub, they should be subject to direct squeeze from the piston and thus the water in the clothes can be forced to squeeze out. When the piston moves upward, negative pressure zone can be formed under it, and then the water can be sucked from the bottom of inner tub firstly so that the clothes can be hold up. Next the clothes are subject to direct impact from the water flooding through the perforations on the walls of inner tub and are swelled and filled with water again. A large quantity of reciprocal movements of the piston make the clothes repeatedly undergo the process of swelling, being squeezed and swelling again and subject to strong impact and friction from the water flow so as to achieve washing. The advantages of the present invention are in that water can penetrate the fabric, water flow is stronger and the clothes cannot be twisted.