Variable capacity vane compressor having a seal protective struc

Details Variable capacity vane compressor having a seal protective struc Variable capacity vane compressor having a seal protective struc

1990-08-24

1992-03-10

Bertsch, Richard A.

Pumps

With condition responsive pumped fluid control

Inlet throttle or stop valve

417310, 418 96, F04B 4900

Patent

active

050945920

ABSTRACT:
A variable capacity vane compressor has a first oil sump formed in a bottom of a discharge pressure chamber arranged at one side of a cylinder close to one side block, and a second oil sump formed in a bottom of a suction chamber arranged at another side of the cylinder close to the other side block. An oil passageway communicates between the first oil sump and the second oil sump. A control element is arranged in the other side block for rotation about its own axis in opposite directions to thereby vary the compression starting timing. A pressure chamber acts to apply control pressure created from discharge pressure from the cylinder to the control element for causing rotation of the control element. A seal member is fitted on the control element such that part of the seal member is located in the pressure chamber. A high pressure-introducing passageway is formed in the other side block and communicates with the second oil sump. The discharge pressure from the cylinder is introduced into the pressure chamber through the discharge pressure chamber, the first oil sump, the second oil sump, and the high pressure-introducing passageway.

REFERENCES:
patent: 2883101 (1959-04-01), Kosfeld
patent: 4776770 (1988-10-01), Nakajima et al.
patent: 4778352 (1988-10-01), Nakajima
patent: 4842490 (1989-06-01), Watanabe et al.
patent: 4869652 (1989-09-01), Nakajima et al.
patent: 4875835 (1989-10-01), Nakajima et al.
patent: 4929156 (1990-05-01), Eitai et al.
patent: 4948345 (1990-08-01), Nakajima

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