Pump device for driving blow-by-gas

US10253662B2 · kind B2 · utility

Assignee

• Mahle International GmbH · DE

Inventors

• Alfred Elsaesser · Keltern, DE
• Volker Kirschner · Rochlitz, DE
• Thomas Riemay · Bad Marienberg, DE
• Stefan Ruppel · Leimen, DE

Key dates

• Filing date: Feb 3, 2016
• Grant date: Apr 9, 2019
• Expiry date: Feb 3, 2036

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01M2013/0427
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A pump device may include a side channel compressor that may include a housing having a conveying chamber and a fluid inlet and outlet. The compressor may include an impeller having blades radially on an outside and which may be mounted rotatably in the housing, the blades lying in the conveying chamber, and a shaft mounted rotatably about an axis of rotation and on which the impeller may be fastened. The conveying chamber may have at least one side channel running in a region of the blades and connecting the fluid inlet and outlet to one another in a circumferential direction. An intermediate region may be formed in the circumferential direction between the fluid inlet and outlet and in which a distance of the blades in an axial direction to the nearest wall may be such that no more than a predetermined amount of fluid flows in the intermediate region.