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    • 6. 发明公开
    • Control valve for variable displacement compressor
    • Kontrollventilfüreinen variablenVerdrängungskompressor
    • EP1052405A2
    • 2000-11-15
    • EP00110108.8
    • 2000-05-10
    • Kabushiki Kaisha Saginomiya SeisakushoKabushiki Kaisha Toyoda Jidoshokki Seisakusho
    • Kaneko, Morio, K.K. Saginomiya SeisakushoOhkawara, Ichiro, K.K. Saginomiya SeisakushoOta, MasakiSuitou, KenSonobe, MasanoriTarutani, Tomoji
    • F04B27/18
    • F04B27/1804F04B2027/1813F04B2027/1827F04B2027/1831F04B2027/185F04B2027/1859
    • A valve housing of the control valve has a communication passage communicating a suction port of the compressor with a crank chamber of the compressor. A main valve is provided in the valve housing for opening and closing the communication passage. A spring member resiliently biases the main valve toward its closed position. A pressure actuated unit moves the main valve toward the open position by receiving a suction pressure of the compressor. A flow adjustment valve is disposed in the valve housing for adjusting an open degree of a leak passage and receives the discharge pressure exerting a force on the flow adjustment valve toward its closed position. The flow adjustment valve increases a leak flow rate of a fluid flowing from a discharge port of the compressor to a crank chamber through a leak passage when the compressor provides a lower discharge pressure. A correction spring is disposed between the main valve and the flow adjustment valve. The correction spring resiliently biases a valve element of the main valve toward the open position and increases in spring force with transfer of a valve element of the flow adjustment valve toward its closed position.
    • 控制阀的阀壳具有将压缩机的吸入口与压缩机的曲轴室连通的连通通道。 主阀设置在阀壳体中,用于打开和关闭连通通道。 弹簧构件将主阀弹性偏压到其关闭位置。 压力驱动单元通过接收压缩机的吸入压力将主阀移动到打开位置。 流量调节阀设置在阀壳体中,用于调节泄漏通道的开度,并将流量调节阀上的压力接收到其关闭位置。 当压缩机提供较低的排出压力时,流量调节阀增加从压缩机的排出口流向曲轴室的流体的泄漏流量。 校正弹簧设置在主阀和流量调节阀之间。 校正弹簧将主阀的阀元件弹性地偏压到打开位置,并且通过将流量调节阀的阀元件转移到其关闭位置而增加弹簧力。