Rotary expansible chamber devices – Specific material
Patent
1993-02-11
1994-10-18
Bertsch, Richard A.
Rotary expansible chamber devices
Specific material
418178, 384913, 384276, F01C 2102
Patent
active
053562771
ABSTRACT:
A rotary vane compressor comprises a cylinder having two closed ends defining a cylinder chamber in which is rotatably mounted a rotor. The rotor carries a plurality of radially movable vanes which move radially into sliding contact with the inner surface of the cylinder chamber during rotation of the rotor to compress a refrigerant gas. The rotor is rotationally driven by a rotor shaft rotatably mounted by bearings in the cylinder ends. To prevent destruction of the ozone layer, a refrigerant containing no chlorine, such as HFC-134a (1,1,1,2-tetrafluoroethane; CH.sub.2 FCF.sub.3) is used, and to compensate for the inferior lubricating properties of the chlorine-free refrigerant, the bearings are provided with a manganese phosphate coating of 10 .mu.m-15 .mu.m thickness to prevent cohesion and seizure of the mutually contacting surfaces of the bearings and rotor shaft.
REFERENCES:
patent: 3935797 (1976-02-01), Niimi et al.
patent: 4804317 (1989-02-01), Smart et al.
patent: 4867658 (1989-09-01), Sugita et al.
patent: 4944663 (1990-07-01), Iizuka et al.
patent: 5055016 (1991-10-01), Kawade
patent: 5073213 (1991-12-01), Pfestorf
Patent Abstracts of Japan, vol. 9, No. 29 (M-356) (1752) Feb. 7, 1985.
Ijiri Makoto
Shimizu Yutaka
Yamaguchi Masaru
Yamane Shuji
Adams Bruce L.
Bertsch Richard A.
Calsonic Corp.
Freay Charles G.
Seiko Seiki Kabushiki Kaisha
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