Rotating anode x-ray tube
AssigneeCanon Electron Tubes & Devices Co., Ltd.
InventorsHidetaka Nakabayashi, Hiroyuki Kumadaki, Hidero Anno
Life of this patent
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Abstract
According to one embodiment, a rotating anode X-ray tube including a rotating cylinder, a rotating shaft fixed to the inside of the rotating cylinder, an anode fixing body arranged between the rotating cylinder and the rotating shaft, extending in the axial direction, and constituted of one of a magnetic substance member formed of a magnetic substance and a heat-transfer enhancing member heat conductivity of which is higher than surrounding members, ball bearings, and an inner member, connected to the anode fixing body by a connecting member, and constituted of one of the magnetic substance member and the heat-transfer enhancing member, one being different from the member constituting the anode fixing body.
Claims21
A rotating anode X-ray tube comprising:
- a rotating cylinder to which an anode target is fixed;
- a rotating shaft coaxially fixed to the inside of the rotating cylinder;
- an anode fixing body arranged between the rotating cylinder and the rotating shaft, extending in the axial direction, and constituted of one of a magnetic substance member formed of a magnetic substance and a heat-transfer enhancing member having a heat conductivity which is higher than surrounding members;
- ball bearings provided between the anode fixing body and the rotating shaft;
- and
- an inner member arranged between the anode fixing body and the rotating shaft, connected to the anode fixing body by means of a connecting member, and constituted of the other one of the magnetic substance member and the heat-transfer enhancing member, the inner member being different from the member constituting the anode fixing body.
A rotating anode X-ray tube comprising:
- an anode target to be bombarded with electrons;
- a rotating cylinder a bottom part of which is connected to the anode target;
- a rotating shaft coaxially connected to the anode target inside the rotating cylinder;
- an anode fixing body arranged between the rotating cylinder and the rotating shaft, and extending in the axial direction;
- ball bearings rotatably provided between the anode fixing body and the rotating shaft;
- a high-radiation film provided on at least one of an inner circumferential part of the rotating cylinder and an outer circumferential part of the anode fixing body, and configured to promote radiation of heat;
- and
- a fixed cylinder provided between the rotating shaft and the anode fixing body, and connected to the anode fixing body by means of a connecting member in such a manner that the fixed cylinder is thermally deformable.
A rotating anode X-ray tube comprising:
- an anode target to be bombarded with electrons;
- a rotating cylinder a bottom part of which is connected to the anode target;
- a rotating shaft coaxially connected to the anode target inside the rotating cylinder;
- an anode fixing body arranged between the rotating cylinder and the rotating shaft, and extending in the axial direction;
- ball bearings rotatably provided between the anode fixing body and the rotating shaft;
- a heat-transfer cylinder provided between the rotating cylinder and the anode fixing body, and fixed to the anode fixing body at a fixing part farther from the anode target;
- and
- a fixed cylinder provided between the rotating shall and the anode fixing body, and connected to the anode fixing body by means of a connecting member in such a manner that the fixed cylinder is thermally deformable.
Dependencies are inferred from the claim text.