公开(公告)号：EP1179679A2

公开(公告)日：2002-02-13

申请号：EP01118525.3

申请日：2001-08-01

申请人： Kabushiki Kaisha Toyota Jidoshokki

发明人： Suitou, Ken ,  Ota, Masaki ,  Kimura, Kazuya ,  Adaniya, Taku ,  Matsubara, Ryo ,  Umemura, Satoshi ,  Shimizu, Izuru ,  Yokomachi, Naoya ,  Fujii, Toshiro ,  Hashimoto, Yuji ,  Murase, Masakazu

IPC分类号： F04B27/18

CPC分类号： F04B27/1804 ,  F04B2027/1813 ,  F04B2027/1827 ,  F04B2027/1854

摘要： A control valve (CV) is used for a variable displacement compressor installed in a refrigerant circuit of a vehicle air conditioner. The control valve (CV) has a valve housing (45). A valve chamber (46) is defined in the valve housing (45). A valve body (43) is accommodated in the valve chamber (46). A pressure sensing chamber (48) is defined in the valve housing (45). A pressure sensing member (54) separates the pressure sensing chamber (48) into a first pressure chamber (55) and a second pressure chamber (56). The pressure at a first location in the refrigerant circuit is applied to the first pressure chamber (55). The pressure at a second location in the refrigerant circuit, which is downstream of the first location, is applied to the second pressure chamber (56). The pressure sensing member (54) moves the valve body (43) in accordance with the pressure difference between the first pressure chamber (55) and the second pressure chamber (56) such that the displacement of the compressor is varied to counter changes of the pressure difference. At least one of the first pressure chamber (55) and the second pressure chamber (56) forms a part of the refrigerant circuit.

摘要翻译： 控制阀（CV）用于安装在车辆空调的制冷剂回路中的变容式压缩机。 控制阀（CV）具有阀壳体（45）。 阀室（46）限定在阀壳体（45）中。 阀体（43）容纳在阀室（46）中。 压力感测室（48）被限定在阀壳体（45）中。 压力感测构件（54）将压力感测室（48）分隔成第一压力室（55）和第二压力室（56）。 制冷剂回路中的第一位置处的压力被施加到第一压力室（55）。 位于第一位置下游的制冷剂回路中的第二位置处的压力被施加到第二压力室（56）。 根据第一压力室（55）和第二压力室（56）之间的压力差，压力感测构件（54）移动阀体（43），使得压缩机的排量变化以抵消 压力差。 第一压力室（55）和第二压力室（56）中的至少一个形成制冷剂回路的一部分。