Delivery pump

US7066711B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Bernd Jäger · Fritzlar, DE
• Peter Marx · Hooksett, US
• Hans-Peter Osburg · Bargteheide, DE

Key dates

• Filing date: May 17, 2002
• Grant date: Jun 27, 2006
• Expiry date: Sep 8, 2022

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F04D29/188
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

In a feed pump (2), guide vanes (9) fastened on a driven impeller (7) project into a recess (11) of a molding (8) annularly surrounding the impeller (7). The guide vanes (9) are located with a slight clearance opposite the wall of the recess (11). The guide vanes (9) can thereby have a particularly large surface. Moreover, a depositing of dirt in the radially outer region of the impeller (7) is avoided.