Screw rotor machine rotors and method of making

Details Screw rotor machine rotors and method of making Screw rotor machine rotors and method of making

1982-12-15

1984-05-01

Smith, Leonard E.

Rotary expansible chamber devices

Interengaging rotating members

Helical or herringbone

F01C 116, F01C 124

Patent

active

044458312

ABSTRACT:
An improved screw compressor for the compression and axial displacement of a gas is set forth. The compressor is of the type having a housing formed with an axially extending passage. The axially extending passage has at one axial end thereof a gas inlet and at the other axial end thereof a gas outlet. A one piece male rotor is positioned in the passage and extends axially therein. The male rotor is formed with a plurality of helical ribs having generally convex flanks and root regions which are at least partially formed as involutes in cross section. Each rib of the male rotor has a profile consisting of a leading flank formed at least partially as an involute generated from a first base circle and a trailing flank at least partially formed as an involute generated from a second base circle. The second base circle has a diameter greater than the first base circle.

REFERENCES:
patent: 2462924 (1949-03-01), Ungar
patent: 3164099 (1965-01-01), Iyoi
patent: 4028026 (1977-06-01), Menssen
patent: 4053263 (1977-10-01), Ingalls
patent: 4210410 (1980-07-01), Ohtani

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