Vane assembly for rotary compressor

Details Vane assembly for rotary compressor Vane assembly for rotary compressor

1976-06-17

1977-11-29

Vrablik, John J.

Pumps

With condition responsive pumped fluid control

Bypass or relief valve carried by movable pumping member

418139, 418147, F04B 4900, F01C 1904, F04C 2700

Patent

active

040603423

ABSTRACT:
A vane assembly for a rotary compressor is provided having a shoe for sliding against a relatively moving surface and carried on a blade edge in a cylindrical pivot type joint. The shoe is generally channel-shaped in transverse cross-section and has openings in both of the opposite legs of the shoe. The cylindrical-shaped edge of the blade upon which the shoe is mounted is dimensioned relative to the socket of the shoe receiving the edge to permit movement of the cylindrical edge in a direction away from the web of the shoe under a condition of high differential pressure across the shoe so that a relief passage from the high pressure space on the one side of the shoe to the low pressure space on the other side of the shoe is provided by the openings in the legs of the shoe and the cylindrical edge moved apart from the web of the shoe. The arrangement according to the invention promotes stability of the shoe on the cylindrical edge and prevents the possibility of the imposition of a turning moment upon the shoe which would result in damage to the shoe or other parts.

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