Patent ID: 6833643
Filing Date: 2004-12-21
Classification: F04D,F16C

Abstract:
A rapidly rotating machine, in particular a turbo compressor, drag vacuum pump, or similar, comprising:a rotating system; two radially passive bearings, each with a stator magnetic-ring set and a rotor magnetic-ring set; the stator and rotor magnetic-ring sets being arranged concentrically to each other but not engaging; the stator magnetic-ring sets being arranged internally and the rotor magnetic-ring sets being arranged externally; a damping means for damping rotor movement, the damping means being made from a non-magnetizable material with good electrical conducting properties, located in the magnetic field of at least one of the magnetic bearings, the damping means connected to outer circumference surfaces of at least one part of the magnetic rings of at least one of the stator magnetic-ring sets; one of the two radially passive magnetic bearing being designed additionally as an axially active magnetic bearing, including: at least one coil and pole components, encompassing at least one of the rotor magnetic-rings of at least one of the rotor magnetic-ring sets, and an axial position sensor, controlling a magnetic field generated by the at least one coil.