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    • 5. 发明公开
    • Control valve for a variable displacement compressor
    • 可变排量压缩机的控制阀
    • EP0985823A2
    • 2000-03-15
    • EP99117777.5
    • 1999-09-09
    • Kabushiki Kaisha Toyoda Jidoshokki SeisakushoNOK Corporation
    • Kawaguchi, MasahiroKudo, TakuyaUemura, NorioWatanabe, KoujiHigashidozono, HidekiHirata, Ichiro
    • F04B27/18
    • F04B27/1804F04B49/065F04B2027/1813F04B2027/1831F04B2027/1854
    • A control valve (40) is provided to be mainly used in a clutch-less compressor of the type in which displacement of the compressor is varied depending on the inclination of a drive plate (17) which varies depending on the crank pressure. The control valve (40) includes biasing means (47,52) that applies force to a valve body (46), a force transferring member (65) that urges the valve body (46) to forcibly open the valve against the force of the biasing means (47,52) and the pressure difference between a crank chamber (3) and a suction chamber (8) of the compressor, and a solenoid assembly (60) to actuate the force transferring member (65). The valve remains closed when no electric current is supplied to the solenoid assembly (60), regardless of the crank pressure or the suction pressure. This facilitates minimum displacement operation of the compressor for a desired period of time and therefore makes the valve suitable for a clutch-less type compressor that is directly connected to an engine with a belt and/or a pulley.
    • 控制阀(40)主要用于其中压缩机的排量根据随曲柄压力而变化的驱动盘(17)的倾斜度变化的类型的无离合器压缩机中。 控制阀(40)包括对阀体(46)施加力的偏压装置(47,52),迫使阀体(46)强制打开阀的力传递构件(65) 偏压装置(47,52)和压缩机的曲轴室(3)和吸入室(8)之间的压力差以及致动力传递构件(65)的螺线管组件(60)。 不管曲柄压力或吸气压力如何,当没有电流供应到螺线管组件(60)时,阀保持关闭。 这有助于压缩机在所需的时间段内的最小排量操作,并因此使得该阀适用于通过皮带和/或皮带轮直接连接到发动机的无离合器型压缩机。