Rotary vane compressor with chamfered vane slots

Details Rotary vane compressor with chamfered vane slots Rotary vane compressor with chamfered vane slots

1979-06-28

1981-06-23

Vrablik, John J.

Rotary expansible chamber devices

Heat exchange or non-working fluid lubricating or sealing

Non-working fluid passage in inner working or reacting member

418238, 418269, F04C 1800, F04C 2900, F04C 2902

Patent

active

042748160

ABSTRACT:
A rotor (18) is disposed in a bore (14) of a cylinder (13) and carries vanes (33), (34), (36), (37) in radial slots (28), (29), (31), (32), the vanes (33), (34),(36), (37) being urged into engagement with the wall of the bore (14) by oil pressure applied to inner ends of the vanes (33), (34), (36), (37). The cylinder (13), rotor (18) and vanes (33), (34), (36), (37) are configured to displace refrigerant fluid or the like through the bore (14) from an inlet (19), (21) to an outlet (22), (23) upon rotation of the rotor (18). The trailing outer edges (28a') of the slots (28), (29), (31), (32) are chamfered, thus reducing frictional resistance between the vanes (33), ( 34), (36), (37) and slots (28), (29), (31), (32) to radial movement and producing a reservoir (28c') for oil forced through clearances between the slots (28), (29), (31), (32) and vanes (33), (34), (36), (37).

REFERENCES:
patent: 3221665 (1965-12-01), Hartmann
patent: 3385514 (1968-05-01), Kilgore et al.
patent: 3767335 (1973-10-01), Kramer et al.
patent: 3981647 (1976-09-01), Schoeps

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