X-ray tube rotor with carbon composite based material
AssigneeKoninklijke Philips N.V.
InventorWolfgang Chrost
Life of this patent
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Abstract
The present invention relates to a rotor for an X-ray tube. In order to provide further possibilities for weight reduction in X-ray tubes for providing an increase of rotation frequency, a rotor (10) for an X-ray tube is provided, comprising a rotational structure (12) with a plurality of electrically conducting elements (14), the ends thereof connected to each other and provided such that an external stator magnetic field generated by a stator induces a current in the electrically conducting elements, which current generates a rotor magnetic field to interact with the stator magnetic field. At least the plurality of electrically conducting elements is made from carbon composite based material.
Claims9
A rotor for an X-ray tube, comprising:
- a rotational structure with a plurality of electrically conducting elements, ends of the electrically conducting elements being connected to each other and provided such that an external stator magnetic field generated by a stator induces a current in the electrically conducting elements, which current generates a rotor magnetic field to interact with the stator magnetic field;
- wherein at least the plurality of electrically conducting elements is made from carbon composite based material;
- and
- wherein the rotational structure is provided as a cylindrical collar on an anode disc on a side opposite a side where a focal track is provided.
An X-ray system, comprising:
- a rotatable anode arrangement;
- a bearing arrangement;
- a stator;
- and
- a rotor comprising a rotational structure with electrically conducting elements, end of the electrically conducting elements being connected to each other and provided such that an external stator magnetic field generated by the stator induces a current in the electrically conducting elements, which current generates a rotor magnetic field to interact with a stator magnetic field, wherein at least the electrically conducting elements are made from carbon composite based material, and wherein the rotational structure is provided as a cylindrical collar on an anode disc on a side opposite a side where a focal track is provided;
- wherein the rotatable anode arrangement is supported by the bearing arrangement;
- and
- wherein the stator is provided with electrical coils to generate the stator magnetic field to interact with the rotor such that electrical current is generated in the rotor generating the rotor magnetic field for rotating the anode arrangement.
A method for rotating an anode of an X-ray tube, the method comprising:
- a) applying a first electrical current to a stator winding;
- b) generating a stator magnetic field;
- c) acting of the stator magnetic field on a rotor, wherein the rotor comprises a rotational structure with a plurality of electrically conducting elements made from carbon composite based material, ends thereof connected to each other;
- wherein
- the rotational structure is provided as a cylindrical collar on an anode disc on a side opposite a side where a focal track is provided;
- d) inducing a second current in the electrically conducting elements by the stator magnetic field, thereby generating a rotor magnetic field;
- e) interacting of the rotor magnetic field with the stator magnetic field;
- and
- f) driving the anode to rotation due to the interaction.
Dependencies are inferred from the claim text.