| 摘要 |
The invention relates to a mounting for a turbo-machine rotor (16). Said mounting is characterized in that radial support of the rotor is assured by one or more permanent magnet bearings (20, 22). One or more single-thrust sliding bearings (24) provide axial support. The permanent magnet bearings (20, 22) also serve as a lifting device for the sliding surfaces of the hydrodynamic sliding bearings (24). A force (A), acting in the opposite direction from the axial force (B), is generated by axial displacement of the rotor-sided bearing elements (28) of the permanent magnet bearing (22), in relation to the housing-sided bearing elements (30), counter to the direction of axial force (B). This force (A) separates the sliding surfaces of the hydrodynamic sliding bearings (24) from each other in the stopping phases of the rotor. Once it has come to a stop, and when it is in the starting and stopping phases, the rotor is guided by one or more sliding or rolling bearings. These are so configured that, at low rotational speed and when at a standstill, they have a substantially lower moment of friction than the hydrodynamic sliding bearings used in the mounting. |
