Rotary anode x-ray tube
AssigneeSiemens Aktiengesellschaft
InventorHerbert Schmitmann
Life of this patent
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Abstract
In an exemplary embodiment, the rotary anode is mounted by magnetic bearings and is provided with an auxiliary device for conducting the anode current to the external power supply. The auxiliary device comprises at least one auxiliary cathode which rotates with the anode and an auxiliary anode which is arranged concentrically to the anode rotary axis on a stationary part. The heating of the auxiliary cathodes can proceed via generator windings which rotate with the rotary anode and associated stationary exciting windings arranged about the x-ray tube. It is also possible to provide for this purpose a rotating transformer whose primary windings externally annularly surrounds the x-ray tube and whose secondary winding is arranged on a rotating anode part.
Claims5
A rotary anode x-ray tube comprising an anode arrangement (3, 4, 5) mounted magnetically for rotation with respect to an anode rotary axis without contact, including an anode (3) and a part (5) rotating with the anode (3), a stationary part (12), and means (12, 13, 14, 20) for carrying off the anode current comprising at least one auxiliary cathode (13, 14) arranged on said part (5) rotating with the anode (3), and an auxiliary anode (20), arranged concentrically to the anode rotary axis on the stationary part (12), and operatively associated with said auxiliary cathode.
Dependencies are inferred from the claim text.