Variable capacity vane compressor

Details Variable capacity vane compressor Variable capacity vane compressor

1987-07-01

1988-05-17

Freeh, William L.

Pumps

With condition responsive pumped fluid control

Inlet throttle or stop valve

417310, F04B 4902, F04C 2908

Patent

active

047447311

ABSTRACT:
A variable capacity vane compressor comprising a control element having at least one pressure-receiving protuberance dividing a space into a first and a second pressure chamber, wherein the control element angularly moves in response to a differential pressure between the first and second pressure chambers, to vary an opening angle of a second portion of at least one inlet port. The control element has mounted thereon a sealing member for sealing between the first and second pressure chambers and between a low pressure chamber and a vane back pressure zone. The sealing member comprises a first sealing portion for sealing between a peripheral wall surface of a central bore in the control element and an inner peripheral side wall surface of an annular recess in a side block, a second sealing portion for sealing between an outer peripheral surface of the control element and an outer peripheral side wall surface of the annular recess, a third sealing portion for sealing between an outer peripheral edge of the pressure-receiving protuberance and the wall surface of the space, and a fourth sealing portion for sealing between an axial end face of the control element and a bottom wall surface of the annular recess.

REFERENCES:
patent: 3206218 (1965-09-01), Potter
patent: 4621986 (1986-11-01), Sudo

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