Leybold Vakuum Gmbh

Oerlikon Leybold Vacuum Gmbh

Karl-Heinz Ronthaler

Josef Hodapp

Rudolf Bahnen

Hans Kriechel

A two-shaft vacuum pump has a simplified drive motor. The two-shaft vacuum pump has a synchronous motor as a drive motor which motor rotor is permanently excited. Permanently excited motor rotors are sufficiently small and of light weight such that rotor supporting bearings can be omitted. This also eliminates the problems associated with cooling and lubrication of the supporting bearings.

Dual-shaft vacuum pump

The radial turbo-blower comprises a stator ( ) that is housed in a stator housing ( ) and a rotor ( ) that rotates within a pump housing ( ). The rotor ( ) comprises a cavity ( ) with a bearing arrangement ( ) that is received by a protruding bearing pin ( ). A pump chamber ( ) is separated from a stator chamber ( ) by a thin partition wall ( ). Thereby, an atmospheric pressure is maintained in the stator chamber ( ). The blower consists of few components and has a short structural length. It is substantially maintenance-free and the rotor area is protected from being contaminated by oil.

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Zülpich, Germany

Karl-Heinz Ronthaler