Pump embodied as a side channel pump

US7090460B2 · kind B2 · utility

Assignee

• LEYBOLD VAKUUM GmbH · DE

Inventors

• Heinrich Engländer · Linnich, DE
• Peter Klingner
• Ingo Seckel · Münstermaifeld, DE

Key dates

• Filing date: Sep 28, 2001
• Grant date: Aug 15, 2006
• Expiry date: Jan 16, 2022

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F04D23/008
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A side channel pump, preferably a vacuum pump, includes a driven rotor (16) and a fixed stator (14). The rotor (16) and the stator (14) define a pump channel circulating in a peripheral direction. Blades are fixed onto the rotor, protruding into the cross-section of the pump channel. The pump channel also includes a blade-free side channel (44). The pump channel (22) containing the side channel (44) extends in a helical manner around the rotor (16). The pump channel is advantageously not limited to the length of a winding but can have the length of substantially any number of uninterrupted windings. As a result, a high suction performance and a high compression ratio in the pump can be obtained.