Screw compressor and method of manufacturing rotors thereof

Details Screw compressor and method of manufacturing rotors thereof Screw compressor and method of manufacturing rotors thereof

2006-05-16

2006-05-16

Trieu, Theresa (Department: 3748)

Rotary expansible chamber devices

Interengaging rotating members

Helical or herringbone

C418S201100, C418S189000, C418S190000

Reexamination Certificate

active

07044724

ABSTRACT:
A screw compressor comprises a casing, and a male and a female rotor formed with axially twisted screw grooves and accommodated in the casing, the both rotors being rotated by timing gears fixed to the respective rotors while a desired minute gap is kept therebetween, and a method of manufacturing rotors therefor. In the screw compressor, the male and female rotors formed with axially twisted screw grooves in the casing comprise concave stripes having a minute depth and provided on the respective screw grooves to extend along directions of twist thereof, and leakage of a compressed air is less to give a high compression efficiency.

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patent: 3179330 (1965-04-01), Maccoll
patent: 3282495 (1966-11-01), Walls
patent: 5060531 (1991-10-01), Iguchi et al.
patent: 6612820 (2003-09-01), Staat et al.
patent: 01208587 (1989-08-01), None
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patent: 6-108983 (1994-04-01), None
patent: A-8-197331 (1996-08-01), None

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