Scroll type fluid displacement apparatus with surface...

Details Scroll type fluid displacement apparatus with surface... Scroll type fluid displacement apparatus with surface...

F - Mech Eng,Light,Heat,Weapons

04

D

103/74

F04D 3/02 (2006.01) F01C 1/02 (2006.01) F01C 21/08 (2006.01)

Patent

CA 1231864

A SCROLL TYPE FLUID DISPLACEMENT APPARATUS WITH SURFACE TREATED SPIRAL ELEMENT ABSTRACT OF THE DISCLOSURE A scroll type fluid displacement apparatus is disclosed in which the scrolls are made of aluminum or an aluminum alloy to reduce the weight of the apparatus. The scrolls are finished by end milling and then electrolytically or chemically polished to reduce the roughness of the mating surfaces. Thereafter, at least one scroll is treated with alumite to reduce wearing due to contact between the scrolls. As a result, sealing of the fluid pockets between the scrolls during extended use of the apparatus can be maintained.

449429

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