Screw compressor with axially displaceable motor

Details Screw compressor with axially displaceable motor Screw compressor with axially displaceable motor

1976-11-22

1978-10-10

Vrablik, John J.

Rotary expansible chamber devices

Interengaging rotating members

Helical or herringbone

418 21, 417284, F01C 116, F01C 2112, F04C 1712, F04C 2908

Patent

active

041193920

ABSTRACT:
The invention deals with a screw compressor with housing, such housing containing a working chamber with two parallel cylindrical intersecting bore holes. The working chamber is bordered by two even end walls vertical with the longitudinal axes of the bore holes; two helical or screw rotors are arranged in the working chamber revolving and engaging and sealed against the chamber walls so that they do not touch the latter, whereby there is axial clearance due to the manner of construction between the frontal walls of the chamber and the fronts of the helical part of the rotor, whereby the screw compressor is provided with a control for volume which causes the output to be decreased by returning the gas sucked into gaps to the suction chamber before compression starts.

REFERENCES:
patent: 1677980 (1928-07-01), Montelius
patent: 2645901 (1953-07-01), Elkins
patent: 3307777 (1967-03-01), Schibbye
patent: 3947078 (1976-03-01), Olsaker

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