EP0224073B1 - Drehanode-Röntgenröhre - Google Patents

Drehanode-Röntgenröhre Download PDF

Info

Publication number
EP0224073B1
EP0224073B1 EP86115161A EP86115161A EP0224073B1 EP 0224073 B1 EP0224073 B1 EP 0224073B1 EP 86115161 A EP86115161 A EP 86115161A EP 86115161 A EP86115161 A EP 86115161A EP 0224073 B1 EP0224073 B1 EP 0224073B1
Authority
EP
European Patent Office
Prior art keywords
anode
ray tube
rotating
ribs
current
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP86115161A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0224073A1 (de
Inventor
Karlheinz Brönner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP0224073A1 publication Critical patent/EP0224073A1/de
Application granted granted Critical
Publication of EP0224073B1 publication Critical patent/EP0224073B1/de
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/02—Details
    • H01J35/04—Electrodes ; Mutual position thereof; Constructional adaptations therefor
    • H01J35/08—Anodes; Anti cathodes
    • H01J35/10—Rotary anodes; Arrangements for rotating anodes; Cooling rotary anodes
    • 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
    • H01J35/1017—Bearings for rotating anodes
    • H01J35/103—Magnetic bearings

Definitions

  • the invention relates to a rotating anode X-ray tube with a magnetically contact-free anode and means for contactless dissipation of the anode current.
  • a rotating anode X-ray tube of this type is e.g. described in DE-OS 30 43 670.
  • the anode is supported by means of a contactless magnetic and axial magnetic bearing. Since the anode is thus kept in suspension during operation, the problem of dissipating the anode current arises.
  • the anode current is accordingly dissipated via an auxiliary diode which is arranged on the anode side, i.e. contactless.
  • the effort for this is great because of the required auxiliary cathode and anode.
  • the invention has for its object to design an X-ray tube of the type mentioned in such a way that contactless discharge of the anode current is ensured at a reduced cost compared to the prior art.
  • a rotating with the anode, cylindrical part is provided on its surface with circumferential ribs, the corresponding ribs on a fixed part in the X-ray tube housing opposite, such that a current transfer takes place by spray discharge.
  • the anode also hovers in a magnetic field.
  • the current transfer from the anode to the anode connection takes place by spray discharge, in that a sufficiently large area, which is electrically connected to the anode, and a surface opposite it, which is designed in such a way that spray discharge can easily occur, are provided.
  • the ribs on the rotating and the fixed part can be based on the principle of a thread with a suitable coating, e.g. made of tungsten.
  • 1 denotes the glass housing of an X-ray tube, in which a rotating anode 2 rotates, which has an anode plate 3, which is fastened on an axis 4 and to which a cathode 5 is assigned in a known manner, which is used to generate the X-rays Electron current delivers.
  • the axis 4 is connected to a rotor 6, which drives the anode 2 and allows magnetic storage. This means that the anode 2 is magnetically levitated during its rotation.
  • a stationary magnetic winding 7 is provided, which surrounds the neck 8 of the glass housing 1.
  • a drive winding 8a is provided for driving the rotating anode 2.
  • the anode 2 has no mechanical contact with fixed parts during its rotation. So that the anode current can be transmitted without contact, the rotor 6 is designed as a hollow cylinder which is provided on its inner surface with ribs 9. The ribs 9 lie opposite ribs 10 on a fixed cylinder 11 which is connected to the anode connection 12.
  • the cylinder 11 carries two ball bearings 13, which are at a distance from the inner surface of the rotor 6 during the rotation of the anode 2, but support the rotor 2 when it is at a standstill.

Landscapes

  • X-Ray Techniques (AREA)
EP86115161A 1985-11-13 1986-10-31 Drehanode-Röntgenröhre Expired EP0224073B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853540303 DE3540303A1 (de) 1985-11-13 1985-11-13 Drehanoden-roentgenroehre
DE3540303 1985-11-13

Publications (2)

Publication Number Publication Date
EP0224073A1 EP0224073A1 (de) 1987-06-03
EP0224073B1 true EP0224073B1 (de) 1989-05-24

Family

ID=6285916

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86115161A Expired EP0224073B1 (de) 1985-11-13 1986-10-31 Drehanode-Röntgenröhre

Country Status (4)

Country Link
US (1) US4769831A (fi)
EP (1) EP0224073B1 (fi)
JP (1) JPS6282559U (fi)
DE (2) DE3540303A1 (fi)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69213202T2 (de) * 1992-01-06 1997-01-23 Picker Int Inc Röntgenröhre mit Ferritkern-Glühwendeltransformator
US5274690A (en) * 1992-01-06 1993-12-28 Picker International, Inc. Rotating housing and anode/stationary cathode x-ray tube with magnetic susceptor for holding the cathode stationary
US5200985A (en) * 1992-01-06 1993-04-06 Picker International, Inc. X-ray tube with capacitively coupled filament drive
JP6571501B2 (ja) * 2015-11-24 2019-09-04 キヤノンメディカルシステムズ株式会社 Ｘ線管及びｘ線ｃｔ装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2885599A (en) * 1955-02-08 1959-05-05 High Voltage Engineering Corp Charge transferring means for electrostatic generators
DE2716069C3 (de) * 1977-04-09 1981-09-24 Machinefabriek W. Hubert & Co. B.V., Sneek Antriebsvorrichtung für das Rührwerk einer Abwasserkläranlage
DE2716079C2 (de) * 1977-04-12 1979-04-05 Kernforschungsanlage Juelich Gmbh, 5170 Juelich Drehanodenröntgenröhre
DE3043046A1 (de) * 1980-11-14 1982-07-15 Siemens AG, 1000 Berlin und 8000 München Drehanoden-roentgenroehre
DE3043670A1 (de) * 1980-11-19 1982-07-08 Siemens AG, 1000 Berlin und 8000 München Drehanoden-roentgenroehre
US4485428A (en) * 1982-05-10 1984-11-27 High Voltage Engineering Corp. High voltage pulse generator
FR2545649B1 (fr) * 1983-05-06 1985-12-13 Thomson Csf Tube radiogene a anode tournante
FR2548829B1 (fr) * 1983-07-06 1985-11-22 Thomson Csf Tube a rayons x a anode tournante muni d'un dispositif d'ecoulement des charges

Also Published As

Publication number Publication date
EP0224073A1 (de) 1987-06-03
DE3540303A1 (de) 1987-05-14
DE3663604D1 (en) 1989-06-29
JPS6282559U (fi) 1987-05-26
US4769831A (en) 1988-09-06

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