Single-pole x-ray emitter

Patent metadata

Field	Value
Publication number	US-9257255-B2
Application number	US-201414176144-A
Country	US
Kind code	B2
Filing date	Feb 9, 2014
Priority date	Aug 8, 2013
Publication date	Feb 9, 2016
Grant date	Feb 9, 2016

Abstract

A single-pole x-ray emitter includes an emitter housing, in which an x-ray tube with a vacuum housing and a drive motor are arranged. A cathode that generates an electron beam, and a rotating anode that is struck by the electron beam along a focal path are arranged in the vacuum housing. The vacuum housing includes a drive-side housing wall and an anode-side housing wall, and the rotating anode is held in a torsionally rigid manner on an anode tube that is rotatably mounted on a stationary part of a rotor shaft that is coupled to the drive motor. The stationary part of the rotor shaft is joined to the anode-side housing wall of the vacuum housing via a ring-shaped fixing. The anode tube incorporates a temperature compensation element. The focal path is arranged on a side of the rotating anode that faces away from the anode-side housing wall.

First claim

The invention claimed is:

1. A single-pole x-ray emitter comprising:
an emitter housing, in which an x-ray tube with a vacuum housing and a drive motor are arranged;
a cathode operable to generate an electron beam, the cathode being arranged in the vacuum housing; and
a rotating anode that is struck by the electron beam along a focal path, the rotating anode being arranged in the vacuum housing,
wherein the vacuum housing comprises a housing wall on a drive side and a housing wall on an anode side, and the rotating anode is held in a torsionally rigid manner on an anode tube that is rotatably mounted on a stationary part of a rotor shaft coupled to the drive motor,
wherein the stationary part of the rotor shaft is joined to the anode side housing wall of the vacuum housing by a ring-shaped fixing,
wherein the anode tube incorporates a temperature compensation element,
wherein a bearing of a rotating part of the rotor shaft is arranged within the anode tube,
wherein the vacuum housing is arranged so that the vacuum housing is electrically insulated from the emitter housing, and
wherein the focal path is arranged on a side of the rotating anode that faces away from the anode side housing wall of the vacuum housing.

2. The single-pole x-ray emitter of claim 1 , further comprising a cooling structure that is arranged on an outer side of the anode side housing wall.

3. The single-pole x-ray emitter of claim 1 , wherein the cathode has a first axis that defines a direction for emission of electrons, and a second axis that defines a high voltage lead, and
wherein the first axis and the second axis are arranged at right angles to each other.

4. The single-pole x-ray emitter of claim 1 , wherein the cathode has a first axis that defines a direction for emission of the electrons, and a second axis that defines a high voltage lead, and
wherein the first axis and the second axis are arranged skew relative to each other.

5. The single-pole x-ray emitter of claim 1 , wherein the drive motor is arranged in the emitter housing and comprises a high voltage production unit arranged outside the emitter housing.

6. The single-pole x-ray emitter of claim 1 , wherein the drive motor is arranged together with a high voltage production unit in the emitter housing.

Assignees

• Dittrich Ronald
• Freudenberger Jörg
• Matschulla Jan
• Neumeier Ernst
• Röhrer Peter
• Siemens Ag

Inventors

• Dittrich Ronald
• Freudenberger Jörg
• Matschulla Jan
• Neumeier Ernst
• Röhrer Peter

Classifications

• H01J2235/1283

  in conjunction with extended surfaces (e.g. fins or ridges) · CPC title

• H01J35/105 Primary

  Cooling of rotating anodes, e.g. heat emitting layers or structures · CPC title

• H01J2235/1006

  Supports or shafts for target or substrate · CPC title

• H01J35/106

  Active cooling, e.g. fluid flow, heat pipes · CPC title

• H01J35/101

  Arrangements for rotating anodes, e.g. supporting means, means for greasing, means for sealing the axle or means for shielding or protecting the driving · CPC title