Title:
BEARING ARRANGEMENT WITH REPELLING PERMANENT MAGNETS FOR RELEASING AN ELECTROMAGNETIC AXIAL BEARING AND X-RAY TUBES WITH SAID TYPE OF BEARING
Document Type and Number:
WIPO Patent Application WO/2010/136325
Kind Code:
A3
Abstract:
The invention relates to a bearing arrangement for a touch-free magnetic axial bearing (1), comprising a rotor/stator pair (2, 3) which can be rotated relative to each other on a common rotational axis (6), wherein magnets are provided both on the rotor side and on the stator side, which create a magnetic field bearing acting towards the axial direction, and a definite gap is present between the rotor (2) and stator (3), so that the rotor (2) and stator (3) do not touch each other, wherein on the side of the rotor (2) and on the side of the stator (3) permanent magnets (4) which are opposite to each other are arranged, the stator-side polarity is directed contrary to the rotor-side polarity, and on the side of the stator (3) at least one control and/or adjustable electromagnet having a coil (5) is arranged, which is opposite to a metal surface on the side of the rotor (2), which serves as a magnet yolk. Further, the invention relates to an X-ray tube (8) having a vacuum housing (9) and a rotary anode localized in the vacuum housing (9), which has at least one magnetic axial bearing (1) of the above-mentioned embodiment for the rotary anode.
Inventors:
FRITZLER SVEN (DE)
MATSCHULLA JAN (DE)
BUDIG PETER-KLAUS (DE)
HUEBNER NILS (DE)
PADITZ MARCUS (DE)
MATSCHULLA JAN (DE)
BUDIG PETER-KLAUS (DE)
HUEBNER NILS (DE)
PADITZ MARCUS (DE)
Application Number:
PCT/EP2010/056364
Publication Date:
April 07, 2011
Filing Date:
May 10, 2010
Export Citation:
Assignee:
SIEMENS AG (DE)
FRITZLER SVEN (DE)
MATSCHULLA JAN (DE)
BUDIG PETER-KLAUS (DE)
HUEBNER NILS (DE)
PADITZ MARCUS (DE)
FRITZLER SVEN (DE)
MATSCHULLA JAN (DE)
BUDIG PETER-KLAUS (DE)
HUEBNER NILS (DE)
PADITZ MARCUS (DE)
International Classes:
F16C32/04; F16C39/06; H01J35/10
Domestic Patent References:
| WO2004007984A1 | 2004-01-22 |
Foreign References:
| JPS5937331A | 1984-02-29 | |||
| GB2322315A | 1998-08-26 | |||
| JPS5730249A | 1982-02-18 | |||
| JPH024024U | 1990-01-11 | |||
| US4322624A | 1982-03-30 | |||
| EP0839291B1 | 1999-06-02 | |||
| US5543673A | 1996-08-06 | |||
| US6198803B1 | 2001-03-06 |
Attorney, Agent or Firm:
SIEMENS AKTIENGESELLSCHAFT (München, DE)
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