Screw compressor

Details Screw compressor Screw compressor

1998-09-09

2000-07-04

Denion, Thomas

Rotary expansible chamber devices

Interengaging rotating members

Helical or herringbone

F01C 124

Patent

active

060829850

ABSTRACT:
A screw compressor to enable prevention of contact between a slide valve and screw rotors. The screw compressor comprising a capacity controlling slide valve 3 provided for advance and (or) retreat through a piston rod 6 by a piston 5 operated by fluid pressure arranged on the discharge side to adjust the size of a diametral opening of screw rotors 1, 2 on the suction side, the screw compressor including projections 8 extending in parallel with axes of the screw rotors 1, 2 from a position distanced from the screw rotors 1, 2 at the end on the suction side of the slide valve 3, and a support portion 10 which comes in relatively slidably contact with surfaces 9 on the axial side of the screw rotors 1, 2 of the projections 8 which advance and retreat along with the slide valve 3 to support the projections 8.

REFERENCES:
patent: 3088659 (1963-05-01), Nilsson et al.
patent: 3146683 (1964-09-01), Hoffmann
patent: 3149543 (1964-09-01), Naab
patent: 3432089 (1969-03-01), Schibbye
patent: 3877846 (1975-04-01), Lundberg
patent: 4913634 (1990-04-01), Nagata et al.
patent: 5921166 (1999-07-01), Machida et al.

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