Speed detector of scroll-type fluid machine

Details Speed detector of scroll-type fluid machine Speed detector of scroll-type fluid machine

G - Physics

01

P

G01P 3/48 (2006.01) F01C 17/06 (2006.01)

Patent

CA 2121207

A speed detector of a scroll-type fluid machine in which a fixed scroll and an orbiting scroll, each of which includes a spiral wrap disposed on the inner surface of an end plate thereof, are engaged with each other and housed in a closed housing, and the orbiting scroll revolves while its rotation is checked by means of an Oldham's ring having the orbiting scroll disposed on the outer surface thereof, wherein the Oldham's ring is formed of a magnetic material, and an electromagnetic induction type revolution signal detecting means is installed in an opposed relationship to the Oldham's ring.

L'invention est un détecteur de vitesse pour machine comportant une rainure fixe et une rainure tournante, chacune d'elles portant un enroulement en spirale sur la face interne d'une plaque terminale. Ces rainures sont engrenées l'une sur l'autre et sont contenues dans un boîtier fermé. La rainure tournante est montée sur la surface externe d'un anneau d'Oldham qui en contrôle la rotation. Cet anneau est fait d'un matériau magnétique et un détecteur de signaux de révolution du type à induction électromagnétique est monté en opposition avec lui.

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