Spiral displacement machine having a lubricant system

Abstract

A displacement machine for compressing fluids includes a housing, a rotor in the housing and a drive shaft journalled in the housing and eccentrically mounting the rotor. A guide shaft journalled in the housing by a slide bearing guides the oscillation of the rotor. Intermeshing spiral strips on the rotor and housing produce compression of fluid in working chambers during oscillation of the rotor. In order to lubricate the drive and guide shafts, a lubricating system includes a bore supplying lubricant to the slide bearing, lubricant passages in the drive shaft and an intermediate line connecting the lubricant outlets from the slide bearing to the lubricant passages in the drive shaft. The guide shaft may be hollow to provide a bore therein which also communicates with the lubricant outlets from the slide bearing and supplies lubricant to an eccentric of the guide shaft.

Dependencies are inferred from the claim text.