Cooled screw-type vacuum pump

US7056108B2 · kind B2 · utility

Assignee

• LEYBOLD VAKUUM GmbH · DE

Inventors

• Manfred Behling
• Hartmut Kriehn · Neunburg vorm Wald, DE
• Klaus Rofall · Sankt Goarshausen, DE
• Ralf Steffens · Neunburg vorm Wald, DE

Key dates

• Filing date: Oct 30, 2002
• Grant date: Jun 6, 2006
• Expiry date: Oct 30, 2022

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F04C2240/603
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A screw-type vacuum pump (1) includes a pump housing (2, 6) with rotors (3, 4). A liquid cooling system cools the rotors and a drive motor (9). In order to improve the cooling of said pump, an external air-flow impelled cooling system is also provided for the pump housing (2, 6).