Rotary vane machine with roller seals for the vanes

Details Rotary vane machine with roller seals for the vanes Rotary vane machine with roller seals for the vanes

1977-10-14

1979-09-25

Vrablik, John J.

Rotary expansible chamber devices

Heat exchange or non-working fluid lubricating or sealing

418 91, 418137, F01C 1900, F01C 100, F01C 2104

Patent

active

041689410

ABSTRACT:
A rotary vane machine utilizing tapered vanes which are rotatably connected to a stationary center shaft and which extend through openings in the wall of an off-center hollow cylindrical rotor into sliding contact with an inner wall of the machine. Working chambers are formed between the vanes outside of the hollow rotor. Roller seals are provided in the rotor wall openings to isolate the inside of the rotor from the working chambers. Rollers which form the seals are disposed, with a close tolerance, in slots formed in the rotor wall openings on each side of the tapered vanes. A small opening, which communicates with one of the working chambers, is formed in the back of each roller slot to admit pressurized fluid from the working chamber to help bias the roller seals into contact with the tapered vanes. A check valve may be provided in the small opening to maintain pressure behind the roller seal. The roller seals are spring biased against the vanes and the roller slots are oriented so during operation centrifugal force urges the rollers against the tapered vanes.

REFERENCES:
patent: 410431 (1889-09-01), McCaskey et al.
patent: 2022207 (1935-11-01), Kratzer
patent: 2044873 (1936-06-01), Beust
patent: 2370934 (1945-03-01), Brown
patent: 2536851 (1951-01-01), Latham, Jr.
patent: 3323501 (1967-06-01), Balve
patent: 3883277 (1975-05-01), Keller
patent: 3886909 (1975-06-01), Balsbaugh

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