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    • 8. 发明专利
    • Displacement control mechanism of variable displacement compressor
    • 可变位移压缩机的位移控制机理
    • JP2004346880A
    • 2004-12-09
    • JP2003146952
    • 2003-05-23
    • Toyota Industries Corp株式会社豊田自動織機
    • UMEMURA SATOSHIKAWAGUCHI MASAHIROYOSHIDA HIROYUKIOTA MASAKIHIROSE TATSUYAINOUE YOSHINORIIIDA SHIYUUSHIN
    • F04B27/14F04B27/18F04B39/16F04B53/20
    • F04B39/16F04B27/1804F04B53/20F04B2027/1813F04B2027/1827F04B2027/1831F04B2027/1854F04B2027/1859F04B2027/1868F04B2027/1881
    • PROBLEM TO BE SOLVED: To prevent operational failure of a spool in a second control valve for adjusting opening of an extraction passage. SOLUTION: This variable displacement compressor reduces delivery capacity when crank pressure Pc increases, and increases the delivery capacity when the crank pressure Pc reduces. A first control valve CV1 adjusts opening of an air supply passage 29 for connecting a delivery chamber 22 and a crank chamber 5. The second control valve CV2 internally autonomously adjusts opening of a first extraction passage 27 for connecting the crank chamber 5 and a suction chamber 21, in response to valve opening of the first control valve CV1. The second control valve CV2 is composed of a spool valve, and a second valve part 88 is arranged in the spool 75. The second valve part 88 cuts off communication between a back pressure chamber 80 and a valve chest 71, via clearance 87 existing around a cylindrical surface 77 of the spool 75 in the second control valve CV2, when a first valve part 79 sets the first extraction passage 27 to minimum opening, in response to opening of the air supply passage 29 by the first control valve CV1. COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:为了防止用于调节提取通道的开口的第二控制阀中的阀芯的操作故障。 解决方案:当曲柄压力Pc增加时,该可变排量压缩机降低输送能力,并且当曲柄压力Pc减小时增加输送能力。 第一控制阀CV1调节用于连接输送室22和曲柄室5的供气通道29的开口。第二控制阀CV2内部自主地调节用于连接曲柄室5和吸入室 响应于第一控制阀CV1的阀打开。 第二控制阀CV2由滑阀构成,第二阀部88布置在阀芯75中。第二阀部88通过存在于周围的间隙87切断背压室80与阀室71之间的连通 响应于第一控制阀CV1对空气供给通道29的打开,当第一阀部分79将第一抽取通道27设定为最小开度时,第二控制阀CV2中的阀芯75的圆柱形表面77。 版权所有(C)2005,JPO&NCIPI