Low frictional loss rotary vane gas compressor having superior l

Details Low frictional loss rotary vane gas compressor having superior l Low frictional loss rotary vane gas compressor having superior l

1983-04-08

1985-06-04

Vrablik, John J.

Rotary expansible chamber devices

Grooved abutting cylinder-rotating member end surfaces

Groove communicates with vane slot

418 94, 418 99, 418150, 418268, F04C 1800, F04C 2902

Patent

active

045211671

ABSTRACT:
A low frictional loss, rotary vane gas compressor utilizing a housing having a generally elliptical cavity therein, and a rotor disposed in the cavity, with the axis of rotation of the rotor being offset from the central axis of the cavity. The housing has an inlet passage and a discharge passage, each in contact with the cavity, with the rotor having a plurality of radial slots in equally spaced relation about its periphery. A slidable vane is disposed in each of these slots, with the outer tip of each vane being in close proximity to an inner stator wall that defines the outer boundary of the cavity. The vanes serve to define a plurality of chambers in the cavity, which chambers undergo significant volume changes as they move about the cavity during rotation of the rotor, the vanes thus cooperating with the inner stator wall to compress gas entering the inlet passage, such that as it leaves through the discharge passage, it is at a higher pressure. Means provide a film of lubricant on the inner stator wall, with the outer tips of the vanes each possessing a compound contour that interacts with the film of lubricant to effect a good seal with the inner stator wall, while minimizing friction.

REFERENCES:
patent: 1854692 (1932-04-01), Cooper
patent: 2070662 (1937-02-01), Johnson
patent: 2423639 (1947-07-01), Czarnecki
patent: 2622538 (1952-12-01), Vincent
patent: 3000324 (1961-09-01), Rosaen
patent: 3820924 (1974-06-01), Cassidy
patent: 4269576 (1981-05-01), Shibuya
patent: 4410305 (1983-10-01), Shank et al.

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