Feed pump

US6471466B2 · kind B2 · utility

Assignee

• Mannesmann VDO AG · DE

Inventors

• Peter Marx · Hooksett, US
• Hans-Dieter Wilhelm · Neu-Anspach, DE
• Holger Barth · Lengefeld, DE

Key dates

• Filing date: Mar 19, 2001
• Grant date: Oct 29, 2002
• Expiry date: Mar 19, 2021

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F04D5/005
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A feed pump includes an impeller with two rings of guide blades delimiting blade chambers. The rings of guide blades concentrically surrounding one another and have different angular intervals between guide blades. The angular intervals between the guide blades of each ring vary within a range of values and ranges of values of each ring of guide blades is different to avoid the additions of noise emissions the feed pump consequently has noises which cause particularly little disturbance.