Vane-type rotary compressor having a bypass passage defined in a

Details Vane-type rotary compressor having a bypass passage defined in a Vane-type rotary compressor having a bypass passage defined in a

1998-04-15

2000-08-29

Nguyen, Hoang

Rotary expansible chamber devices

With mechanical sealing

418102, F01C 2104

Patent

active

061099015

ABSTRACT:
A vane-type rotary compressor has a compression chamber delimited by a cylinder and front and rear covers secured to opposite ends of the cylinder. The front cover accommodates main and auxiliary shaft seal parts held in contact with a drive shaft. A space defined between the two shaft seal parts communicates with a suction stroke portion of the compression chamber via at least one bypass passage. Accordingly, the pressure and temperature acting on the main shaft seal part are substantially the same as those acting on the suction stroke portion, thus reducing the pressure and temperature on the main shaft seal part.

REFERENCES:
patent: 2998783 (1961-09-01), Lee
patent: 4171938 (1979-10-01), Pahl
patent: 4199305 (1980-04-01), Pareja
patent: 4770616 (1988-09-01), Kahrs
patent: 5083909 (1992-01-01), Kunsemiller et al.

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