Rotary, positive-displacement machine, of the helical- rotor...

Details Rotary, positive-displacement machine, of the helical- rotor... Rotary, positive-displacement machine, of the helical- rotor...

F - Mech Eng,Light,Heat,Weapons

04

D

230/39

F04D 17/06 (2006.01) F04C 18/08 (2006.01)

Patent

CA 1229830

A ROTARY, POSITIVE-DISPLACEMENT MACHINE, OF THE HELICAL-ROTOR TYPE, AND ROTORS THEREFOR Abstract of the Disclosure The Machine, in the embodiment shown, is an air (or gas) compressor having a housing with parallel, intersecting bores in which are rotatably journaled coacting, meshing helical rotors. The rotors, male and female, are of the asymmetrical type. Confronting concave and convex surfaces of portions of the grooves and lobes of the rotors, for hav- ing different arcuate conformations along principal lengths thereof, define a void of varying width therebetween. How ever, other, minor extents of the confronting surfaces are defined of a common arc and, therefore, nestably conform with each other (a) to reduce contact stress therebetween, (b) to improve rotor-to-rotor sealing, and (c) to accom- modate therebetween a significant film of oil.

460874

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