Measuring gas pump

US6827558B2 · kind B2 · utility

Assignee

• KNF Neuberger GmbH · DE

Inventors

• Erwin Hauser · Emmendingen, DE
• Erich Becker · Springe, DE

Key dates

• Filing date: Oct 18, 2002
• Grant date: Dec 7, 2004
• Expiry date: Dec 26, 2022

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F04B39/0094
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A measuring gas pump (1) including a pump housing (2) with a pump chamber (3) inside which is sealed by a working membrane (5). The membrane (5) is connected: by a connecting rod (8) or a similar type of lifting device to a crank mechanism (9). A heating device is provided in the upper area of the pump housing, specifically in the pump head (10). On one hand, in the drive-transmission area between the head of the connecting rod (6) on the membrane side and the crank mechanism (9), there are holes (11) for the reduction of heat transfer to the crank mechanism which are spaced in a longitudinal direction of the connecting rod and which are also diametrically opposed, in peripheral direction, with a resulting reduction in heat conductivity. On the other hand, there is an enlargement of the surface area, at least in the area adjacent to the crank mechanism, for purposes of heat dissipation, specifically through cooling ribs (12).