Axial actuator for unloading an orbital scroll type fluid material handling machine,申请号US19930071165-传众专利搜索

Axial actuator for unloading an orbital scroll type fluid material handling machine

申请公布号：US5342186(A)

申请号：US19930071165

申请日期：1993.06.02

申请公布日期：1994.08.30

申请人：

GENERAL MOTORS CORPORATION

发明人：SWAIN, JAMES C.

分类号：F01C19/08;F04C18/02;F04C28/26;(IPC1-7):F01C1/02

主分类号：F01C19/08

摘要：A scroll type fluid displacement machine (10) with a housing (12) a fluid inlet port (78) and a fluid outlet port (76) has an annular piston (88) that biases the balls (90) of the ball coupler and the orbital scroll (29) toward the fixed scroll (18) to move the axial tips (40 and 58) of the wraps (34 and 52) into sealing contact with the end plates (30 and 48) when fluid is pumped into the annular chamber (120). A control system (28) is provided to control the axial position of the orbital scroll (20). The control system (28) includes a solenoid valve (176) which directs fluid from a small trigger compressor (174) to the annular chamber (120) to axially move the orbital scroll (20) into sealing contact with the fixed scroll (18). The solenoid valve (176) also directs fluid from the exhaust chamber (42) to the annular chamber (120) to maintain the orbital scroll (20) in sealing contact with the fixed scroll (18). The solenoid valve (176) also directs fluid from the annular chamber (120) to the sump (232) to stop fluid compression by the scrolls (18 and 20).