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    • 2. 发明授权
    • Diaphragm type water inlet valve
    • 隔膜式进水阀
    • US4860990A
    • 1989-08-29
    • US269073
    • 1988-11-09
    • Sooichi FukuzawaYoshiaki TakedaYoshio Ohwa
    • Sooichi FukuzawaYoshiaki TakedaYoshio Ohwa
    • F16K31/40
    • F16K31/404
    • A volute chamber having an inflow port is provided at the inlet of an extraction hole of a diaphragm valve. The volute chamber is formed with a lid in a hollow portion of a synthetic resin material member of the diaphragm member. The volute chamber is formed with a cap as volute chamber forming piece at the lower portion of the synthetic resin material member. A small projection is formed at the inlet of the extraction hole and protrudes in the volute chamber. A rib having an inflow port is formed partially at the outer surface of the cap. The spinning speed of the water in the volute chamber and the fluid circulation resistance in the volute chamber become large. The water supply to a back pressure chamber reduces and the closing speed of the diaphragm valve decreases. The water hammering action in the water inlet valve can be mitigated due to the rapid closing operation of the diaphragm valve.
    • 具有流入口的蜗壳室设置在隔膜阀的抽取孔的入口处。 蜗壳室在隔膜构件的合成树脂材料构件的中空部分中形成有盖。 涡卷室在合成树脂材料构件的下部形成有作为蜗壳室形成件的盖。 在抽出孔的入口处形成小突起,并在蜗壳室内突出。 具有流入口的肋部分地形成在盖的外表面。 蜗壳中的水的旋转速度和蜗壳内的流体阻力变大。 背压室的供水减少,隔膜阀的关闭速度降低。 由于隔膜阀的快速关闭操作,进水阀中的水击动作可以减轻。