Slide valve type screw compressor

Details Slide valve type screw compressor Slide valve type screw compressor

1984-05-23

1986-03-11

Smith, Leonard E.

Rotary expansible chamber devices

Interengaging rotating members

Helical or herringbone

417440, F01C 116

Patent

active

045753237

ABSTRACT:
A slide valve type screw compressor having a slide valve with a surface of chevron shape in section consisting of a couple of arcuately curved surfaces forming part of the inner wall surfaces of a rotor chamber accommodating a pair of intermeshed male and female screws, the slide valve being slidable in the axial direction of the rotors for communicating the rotor chamber with a suction port through an opening with an adjustably variable area for volumetric control of the compressor, characterized in that the slide valve is retractably protruded into a suction casing at a fore end on the side of the suction port and has the opposite outer corner portions of the curved surfaces cut off at a predetermined angle with the longitudinal axis thereof to provide a substantially triangular section with a forwardly reduced width at the protruded fore end.

REFERENCES:
patent: 3088659 (1963-05-01), Nilsson
patent: 4042310 (1977-08-01), Schibbye
patent: 4234296 (1980-11-01), Matsubara
patent: 4388048 (1983-06-01), Shaw

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