Rotary expansible chamber devices – Grooved abutting cylinder-rotating member end surfaces – Groove communicates with vane slot
Patent
1985-10-30
1987-04-14
Vrablik, John J.
Rotary expansible chamber devices
Grooved abutting cylinder-rotating member end surfaces
Groove communicates with vane slot
418 95, 418104, 384478, F04C 18344, F04C 2902, F16C 3506
Patent
active
046574956
ABSTRACT:
Bearing apparatus for movable vane compressor is provided with a pressure-reducing passage extending from an annular clearance between the inner side surface of the bearing and the side surface of the rotor to the open air or the like, such as the suction-chamber and the suction-working space. Compressed air enters the annular clearance through a gap between the inner side surface of the side housing and the side surface of the rotor from the compression-working space between two adjacent vanes and then runs out through the pressure-reducing passage without pushing the bearing grease from the bearing.
REFERENCES:
patent: 2674953 (1954-04-01), Conde
patent: 3988080 (1978-10-01), Takada
Horikoshi Yukio
Sakamaki Hiroshi
Sugishita Susumu
Nippon Piston Ring Co. Ltd.
Vrablik John J.
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