| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and a device to introduce a cooling fluid into a bearing assembly of an X-ray tube. SOLUTION: The X-ray tube contains an envelope to decide a range of a vacuumed space and a positive electrode assembly to interact with a negative electrode assembly for generating X-ray is rotatably mounted on the bearing assembly in this. The bearing assembly includes a cooling channel whose range is prescribed within the bearing assembly, and the cooling fluid like oil is extended and led over the inner surface of a bearing housing. The current inductor is mounted inside a fluid entrance port in the housing, and has a fluid entrance opening part to connect the current inductor with a heat removing system. A hollow part has the range prescribed by the housing of the current inductor, and two fluid exit opening parts fluid-communicate with each other and with the fluid entrance opening part.
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