X-ray tube rotor assembly having augmented heat transfer capability
US6751292B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 19, 2002 |
| Grant date | Jun 15, 2004 |
| Priority date | — |
| Expiry date | Sep 26, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2235/1208
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A rotor assembly capable of augmented heat transfer within an x-ray tube is disclosed for preventing heat damage to sensitive tube components. The rotor assembly generally comprises a shaft assembly for supporting the anode, a bearing assembly including a bearing housing and bearing sets for enabling rotation of the shaft assembly, and a magnetic sleeve. The shaft assembly includes a rotor sleeve that receives heat emitted by the anode during tube operation. The rotor sleeve radiates the heat to the magnetic sleeve, which is concentrically disposed within the rotor sleeve. A coolant-filled gap is defined adjacent the inner surface of the magnetic sleeve to receive the heat absorbed by the magnetic sleeve. The inner periphery of the gap is defined by the outer surface of the bearing housing. Emissive and absorptive coatings are disposed on the various surfaces of the rotor sleeve and magnetic sleeve to enhance heat transfer therebetween.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.