Screw type compressor rotor, rotor casting core and method of ma

Details Screw type compressor rotor, rotor casting core and method of ma Screw type compressor rotor, rotor casting core and method of ma

1996-04-01

1998-06-30

Freay, Charles G.

Rotary expansible chamber devices

Interengaging rotating members

Like rotary members

F01C 118

Patent

active

057724180

ABSTRACT:
There are provided male and female rotors, which engage with each other at screw-shaped tooth trace portions formed on the rotor bodies; a compressor casing which houses these rotors and has a suction port on one side in the axial direction and a discharge port on the other side in the axial direction; hollow portions which are provided in the tooth trace portions of the male screw rotor and communicate with the suction port; and partition walls which are provided at the end on the discharge port side of the tooth trace portions and block the hollow portions.

REFERENCES:
patent: 2714314 (1955-08-01), Ulander
patent: 2857779 (1958-10-01), Frei
patent: 4971536 (1990-11-01), Takeda et al.
patent: 5180299 (1993-01-01), Feuling
patent: 5320508 (1994-06-01), Kiefer

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