Screw compressor with balanced thrust

Details Screw compressor with balanced thrust Screw compressor with balanced thrust

1998-05-18

2000-04-18

Nguyen, Hoang

Rotary expansible chamber devices

Interengaging rotating members

Helical or herringbone

F01C 116

Patent

active

060507977

ABSTRACT:
The shaft portion of a screw rotor is axially loaded to offset the thrust loading of the screw rotor due to forces exerted on the screw rotor by fluid being compressed and tending to move the screw rotor from the discharge towards suction. This permits the elimination of the thrust bearings. Preferably, the discharge end of the lobes of the rotors is beveled canted so as to generate a hydrodynamic film during operation.

REFERENCES:
patent: 3947163 (1976-03-01), Olofsson
patent: 5135374 (1992-08-01), Yoshimura et al.
patent: 5281115 (1994-01-01), Timuska
patent: 5350286 (1994-09-01), Kisi et al.
patent: 5678987 (1997-10-01), Timuska
patent: 5707223 (1998-01-01), England et al.

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