发明名称 |
Magnetic bearing for a fast rotating vacuum pump. |
摘要 |
<p>The invention describes a system of magnetic bearings for high speed rotary vacuum pumps, having two radially centering passive magnetic bearings, which originate axially destabilizing forces and thus an unstable point. The axial position is regulated by an electrical solenoid and the operational point of the radial bearing is axially shifted with reference to the unstable point in direction of a high vacuum flange. One of two emergency bearings is located on a high vacuum end and the other is arranged on a fore-vacuum end between the solenoid and the lower passive radial bearing, the rotor, solenoid and position sensor being arranged so as to insure an easy adjustability of the rotor.</p> |
申请公布号 |
EP0344503(B1) |
申请公布日期 |
1994.01.05 |
申请号 |
EP19890108664 |
申请日期 |
1989.05.13 |
申请人 |
BALZERS-PFEIFFER GMBH |
发明人 |
BERNARDT, HELMUT;BERNHARDT, KARL-HEINZ |
分类号 |
F04D29/056;F04D19/04;F04D29/058;F04D29/059;F16C32/04;F16C39/02;F16C39/06;(IPC1-7):F16C39/06 |
主分类号 |
F04D29/056 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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