Rotary piston pump having a slide valve driven by a rotor

US5779463A · kind A · utility

Assignee

• PIERBURG GMBH · DE

Inventors

• Helmut Rossel
• Martin Krucinski · Webster, US
• Rainer Strauss · Kaarst, DE
• Ulrich Flesch · Essen, DE
• Dieter Jelinek · Kaarst, DE

Key dates

• Filing date: Jul 14, 1995
• Grant date: Jul 14, 1998
• Expiry date: Jul 14, 2015

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F04C18/3441
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A rotary piston pump in which a slide valve has a pivot bearing at each of its ends which supports a sliding block and wherein a theoretical slide valve length in the position in which the axes of symmetry of the shell rotor and slide valve are superimposed, is equal to the sum of the length along the slide valve measured between the pivot bearings plus two times the thickness of a sliding block measured between its pivot bearing and the wall of the shell. The sliding blocks have an outer surface with a curvature between the curvature of the outer surface of the rotor and the maximum curvature of the wall of the shell.