Multi-rotor helical-screw compressor with thrust balance device

Details Multi-rotor helical-screw compressor with thrust balance device Multi-rotor helical-screw compressor with thrust balance device

1998-01-13

2000-07-25

Vrablik, John J.

Rotary expansible chamber devices

Interengaging rotating members

Three or more

418203, F04C 1816

Patent

active

060930071

ABSTRACT:
A compressor in accordance with the present invention includes a male rotor which is axially aligned with and in communication with two female rotors. The compressor includes a housing and a thrust balance configuration. The thrust balance configuration includes a stepped up portion mounted at the suction end of the male rotor and is exposed to fluid from the compressor at high pressure. The outside diameter of the thrust balance configuration is generally less than the crest diameter of the male rotor and sized to provide sufficient area to react thrust loads produced by the first rotor. The thrust balance configuration serves to balance the thrust loads imparted on the male rotor and allows for full axial discharge porting.

REFERENCES:
patent: 2095167 (1937-10-01), Burghauser
patent: 2481527 (1949-09-01), Nilsson
patent: 3161349 (1964-12-01), Schibbye
patent: 3388854 (1968-06-01), Olofsson et al.
patent: 4878820 (1989-11-01), Doi et al.
patent: 5207568 (1993-05-01), Szymaszek
patent: 5816055 (1998-10-01), Ohman

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