Blower or pump with capillary filter for replenishment of oil separated by vacuum pump

US5114320A · kind A · utility

Assignee

• Leybold GmBH · DE

Inventors

• Hans-Peter Kabelitz · Cologne, DE
• Martin Muhlhoff · Cologne, DE
• Hans Kriechel · Bornheim, DE
• Wolfgang Maas · Cologne, DE
• Dieter Kolvenbach · Cologne, DE

Key dates

• Filing date: Dec 20, 1990
• Grant date: May 19, 1992
• Expiry date: Dec 20, 2010

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F05D2260/602
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A housing 3 disposed below the rotor accommodates a driving motor 13, shaft bearings 14, 15 and an oil sump 21. An evacuating line 31 which traverses the wall the housing 3 connects a vacuum pump to the interior 18 of the housing. In order to avoid the loss of oil in the housing or the bearings, the evacuating line 31 and the oil sump 21 are directly connected.