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1. 发明授权

US4343324A Flow control valve 失效
标题翻译：流量控制阀
公开(公告)号：US4343324A
公开(公告)日：1982-08-10
申请号：US211594
申请日：1980-12-01
申请人： Takeshi Ohe , Haruo Okamoto
发明人： Takeshi Ohe , Haruo Okamoto
IPC分类号： B62D6/02 , G05D7/01 , G05D11/00
CPC分类号： B62D6/02 , G05D7/0126 , Y10T137/2589 , Y10T137/2594 , Y10T137/7788 , Y10T137/7792
摘要： A flow-control valve exhibits a flow-drooping characteristic such that the liquid supply into an oil pressure mechanism is decreased in response to an increase of the amount of liquid discharge from a pump. The pump outlet passage forms branches into a fluid supply passage communicating with an oil pressure mechanism and a recirculating passage back to an oil tank. A control valve located in the recirculating passage is opened in response to the fluid increase from the pump to recirculate a part of the fluid into the tank. An orifice not receiving large influences of the pressure variation is disposed either at the pump outlet passage or the recirculating passage and a variable orifice valve is disposed in the fluid supply passage. The variable orifice is controlled by the pressure differential existing between the upstream and downstream portions of the orifice at either location. When the pressure differential is large, the area of the variable orifice becomes small to thereby obtain the fluid drooping characteristic.
摘要翻译：流量控制阀具有流下垂特性，使得响应于来自泵的液体排出量的增加，供给到油压机构的液体减少。泵出口通道形成分支到与油压机构连通的流体供给通道和回到油箱的再循环通道。响应于来自泵的流体增加而将一部分流体再循环到罐中，位于再循环通道中的控制阀打开。不受压力变化影响较大的孔口设置在泵出口通道或循环通道处，并且可变孔口阀设置在流体供应通道中。可变孔由在任一位置处孔口的上游部分和下游部分之间存在的压力差来控制。当压差大时，可变孔口的面积变小，从而获得流体下垂特性。

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