Helical positive-displacement machine having a meandering sealing strip groove

摘要

In a positive-displacement device for compressible media with a helically-shaped conveying chamber disposed in a stationary housing, a helically-shaped positive-displacement body is associated with the conveying chamber. The body is maintained on a disk-shaped rotor which can be eccentrically driven in relation to the housing in such a way that during operation, each one of its points performs a circular movement which is limited by the circumferential walls of the conveying chamber. The front faces of the positive-displacement body adjoining one lateral wall of the conveying chamber are provided with a groove into which a sealing strip, consisting of a resilient material which is capable of gliding, is inserted. The groove has at least partially a meander-like extent.