Return channels for a multi-stage turbocompressor

US11519424B2 · kind B2 · utility

Assignee

• ebm-papst Mulfingen GmbH & Co. KG · DE

Inventors

• Markus Engert · Lauda, DE
• Angelika Klostermann · Gaisbach, DE
• Daniel J. Conrad · Neuenstadt am Kocher, DE

Key dates

• Filing date: Nov 15, 2019
• Grant date: Dec 6, 2022
• Expiry date: Nov 29, 2039

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F04D29/30
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A return geometry fluidically connects a first and a second compressor stage of the turbocompressor. The return geometry has multiple partial helices that are evenly or unevenly distributed in the circumferential direction. The multiple partial helices extend at least in part in the circumferential direction. They form flow channels that extend at least in some sections, separately from each other, to fluidically connect the first and second compressor stages.