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    • 2. 发明授权
    • Fluid control system
    • 流体控制系统
    • US3542594A
    • 1970-11-24
    • US3542594D
    • 1968-06-19
    • MAYTAG CO
    • SMITH THOMAS RFAUST STEWART W
    • A47L15/42D06F33/02B08B3/02
    • A47L15/4208A47L15/0031A47L15/4225A47L15/4289D06F33/02
    • A fluid control system for a dishwashing apparatus is disclosed that includes a reversible two-cavity pump assembly with each of the cavities having an inlet in open fluid communication with the washing chamber and with the first cavity having an outlet in open fluid communication with the fluid distribution system and the second cavity having an outlet in open fluid communication with an external drain conduit. An impeller is disposed within each of the cavities and a divider is positioned between the cavities for defining an annular orifice therebetween. Operation of the impellers in a first direction effects pumping of fluid from said chamber to the fluid recirculation system with the first pump while the second pump maintains a substantially static low pressure head at the outlet thereof to prevent drainage of fluid from said chamber while preventing suction of fluid from the drain. The pumps are operable in the opposite direction to intially continue recirculation of fluid with the first pump while the second is operable for draining fluid from the chamber and pumping it toward an external drain.
    • 公开了一种用于洗碗设备的流体控制系统,其包括可逆双空腔泵组件,其中每个空腔具有与洗涤室开放流体连通的入口,并且第一空腔具有与流体开放流体连通的出口 分配系统和第二腔具有与外部排水管道开放流体连通的出口。 叶轮设置在每个空腔内,分隔件位于空腔之间,用于在其间形成环形孔。 叶轮在第一方向的操作通过第一泵将流体从所述室泵送到流体再循环系统,而第二泵在其出口处保持基本静止的低压头,以防止流体从所述室排出,同时防止抽吸 的流体从排水管。 泵可以在相反方向上操作,以使流体与第一泵继续再循环,而第二泵可操作以从腔室排出流体并将其泵送到外部排水管。