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US 3,989,422 AGranted
Displacement machine for compressible media
AssigneeAginfor AG fur Industrielle Forschung
InventorHeinrich Guttinger
Life of this patent
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AssigneeAginfor AG fur Industrielle Forschung
InventorHeinrich Guttinger
Estimating the term…
A displacement machine for compressible media comprising a displacement compartment bounded by an inwardly situated spiral-shaped side wall and an outwardly situated spiral-shaped side wall, the displacement compartment describing a span angle which exceeds 360.degree. and extends from an inlet to an outlet. The displacement compartment is provided with a displacement element which carries out a circulatory movement relative to the displacement compartment and likewise possesses the shape of a spiral and has practically the same span angle as the displacement compartment. The displacement element, during the course of the circulatory movement, always contacts both the outer situated side wall and the inner situated side wall at least at one respective advancing contact line. A pole of a first section, spanning approximately 360.degree. both of the displacement compartment and the displacement element is off set from a pole of a likewise spiral-shaped second section which uniformly merges at the inner end of this first section by an amount which is smaller than the mean radius of curvature at the inner end of the aforementioned first section.
A positive displacement machine for compressible media, comprising a displacement compartment bounded by an inner situated substantially spiral-shaped side wall and an outer situated substantially spiral-shaped side wall, said displacement compartment describing a span angle which exceeds 360.degree. and extending between an inlet and an outlet, a displacement element arranged in the displacement compartment for carrying out a circulatory movement relative to the displacement compartment, said displacement element substantially possessing the shape of a spiral and having practically the same span angle as the displacement compartment, the displacement element during the course of the circulatory movement always contacting both the outer situated side wall and the inner situated side wall at least at one respective advancing contact line, the pole of a first section spanning thru about 360.degree. of both the displacement compartment and the displacement element is offset from the pole of a second section which uniformly merges at the inner end of the first section, by an amount which is smaller than the mean radius of curvature at the inner end of said first section.
A positive displacement machine for a fluid medium, comprising means defining a housing having an inlet and an outlet, means providing a displacement compartment extending between said inlet and said outlet, said displacement compartment extending about an axis defining a first pole through a span angle greater than 360.degree., said means defining said displacement compartment comprising an inner situated substantially spiral-shaped wall and an outer situated substantially spiral-shaped wall, a displacement element arranged within the displacement compartment for carrying out a gyrating movement relative to the displacement compartment, said displacement element possessing a substantially spiral-shape and possessing essentially the same span angle as the displacement compartment, said displacement element, during the course of the gyrating movement, contacting both the outer situated wall and the inner situated wall at least at one respective progressive contact line, the displacement compartment and the displacement element each having a first section spanning an angle of approximately 360.degree. about said first pole, each said displacement compartment and said displacement element having a second section merging at an inner end of the respective first section thereof and angularly spanning about a second pole, said first pole being offset from the second pole by an amount which is less than the average radius of curvature at the inner end of each said first section.
Dependencies are inferred from the claim text.