Leybold Aktiengesellschaft

Hartmut Kriehn

Lothar Brenner

Monika Kuhn

Hanns-Peter Berges

Rudolf Bahnen

Sascha Bauer

Wolfgang Leier

Ralf Steffens

Paul Bachmann

Uwe Gottschlich

Andreas Kobus

A process for operating a dry-compression vacuum pump with at least one pump chamber and at least one rotor driven by an electric motor, and to a vacuum pump suitable for this operating process. To reduce operational shutdowns for maintenance purposes without any risk to the pump, it is proposed that application-specific phenomena leading to deviations from the normal operating status or their effects be monitored and, after a predetermined deviation quantity has been attained at which operation of the vacuum pump could be adversely affected in future, steps be taken to remove the causes thereof.

Process for operating a dry-compression vacuum pump as well as a

Apparatus and process for operating a dry-compression vacuum pump

A method of operating a claw-type vacuum pump with two or more stages, each of which has a suction chamber with a pair of claw rotors and end-located suction and discharge ports. To avoid the possibility of liquids affecting operation of the pump, the invention proposes that the pump is operated without internal compression and that the gases emerging from at least one stage are cooled.

Method of operating a claw-type vacuum pump and a claw-type vacuum pump

Muffler

Dry-running twin-shaft vacuum pump

The invention relates to a method for the operation of a multi-stage, dry compression vacuum pump (1) with an inlet (7) and an outlet (9), in which the aspirated gases contain gaseous components which endanger the operation of the vacuum pump; in order to render the gas components harmless it is proposed that the gases aspirated from the vacuum chamber (8) and flowing through the vacuum pump be carried through a reaction chamber (14) in which the components endangering the vacuum pump are chemically or physically treated at a pressure between the aspiration pressure and the outlet pressure of the vacuum pump.

Multi-stage vacuum pump with reaction chamber between stages

A twin-shaft vacuum pump having a pair of shafts, at least one pump chamber, a pair of rotors disposed in the or in each pump chamber and mounted on the shafts, and housing members defining the pump chamber or chambers, a synchronization mechanism composed of two gears disposed in a side chamber, a drive motor, and a transmission mechanism connecting the drive motor to one of the shafts. In order to simplify installation and servicing of the pump, the shafts are mounted vertically. The side chamber, synchronization mechanism, and transmission mechanism are disposed below the lower rotor pair.

Twin-shaft, multiple-stage vacuum pump with the shafts vertically

Growing community of inventors

Koln, Germany

Hartmut Kriehn