X-ray tube heat barrier
The present invention pertains to the vacuum tube arts, and in particular to a heat barrier for an x-ray tube. It finds particular application in conjunction with rotating anode x-ray tubes for CT scanners and will be described with particular reference thereto. However, it is to be appreciated that...
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| Main Authors | , , |
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| Format | Patent |
| Language | English |
| Published |
16.03.2004
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| Online Access | Get full text |
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| Summary: | The present invention pertains to the vacuum tube arts, and in particular to a heat barrier for an x-ray tube. It finds particular application in conjunction with rotating anode x-ray tubes for CT scanners and will be described with particular reference thereto. However, it is to be appreciated that the present invention will also find application in the generation of radiation and in vacuum tubes for other applications.
An x-ray tube () includes a heat shield () which intercepts heat radiating from an anode (), thereby reducing the temperature of a bearing assembly (). The heat shield includes outer and inner concentric cylinders () spaced from each other by a vacuum gap (). The heat shield and a stationary portion () of the bearing assembly are both connected to a cold plate () so that heat is not conducted from the cylinders to the bearing assembly but is instead carried away by the cold plate to the surrounding cooling oil. |
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