EP0225463B1 - Emetteur de rayons X - Google Patents
Emetteur de rayons X Download PDFInfo
- Publication number
- EP0225463B1 EP0225463B1 EP86114903A EP86114903A EP0225463B1 EP 0225463 B1 EP0225463 B1 EP 0225463B1 EP 86114903 A EP86114903 A EP 86114903A EP 86114903 A EP86114903 A EP 86114903A EP 0225463 B1 EP0225463 B1 EP 0225463B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tube
- rotor
- pump
- hood
- ray
- 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
Links
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05G—X-RAY TECHNIQUE
- H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
- H05G1/02—Constructional details
- H05G1/04—Mounting the X-ray tube within a closed housing
-
- 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
- H01J35/105—Cooling of rotating anodes, e.g. heat emitting layers or structures
- H01J35/106—Active cooling, e.g. fluid flow, heat pipes
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05G—X-RAY TECHNIQUE
- H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
- H05G1/02—Constructional details
- H05G1/025—Means for cooling the X-ray tube or the generator
Definitions
- the invention relates to an X-ray emitter according to the preamble of claim 1.
- Such arrangements are known, for example, from G.J. van der Plaats M.D. "Medical X-Ray Technique” Principles and Applications in Philips Technical Library 1961, pages 31 to 34.
- the liquid present in the tubular hood can also be circulated by pumping it out of the hood and pumping it back again via a cooling block (cooling forced by circulation).
- Static cooling has only a slight effect, especially when the tube is under high load, whereas forced cooling requires a complicated structure, which is particularly annoying if the arrangement is to be kept in motion during the recording, as in computed tomography (CT) .
- CT computed tomography
- the invention is therefore based on the object of specifying a highly effective and at the same time space-saving cooling device which can be combined with the radiator in a compact manner in an X-ray source of the type mentioned at the outset. This object is achieved by the measures specified in the characterizing part of claim 1. Advantageous embodiments and developments of the invention are specified in the subclaims.
- the invention is based on the fact that it is advantageous and favorable for the cooling of the tube if the coolant, that is to say an oil filled into the hood, is kept in motion by means of a circulation pump.
- the coolant that is to say an oil filled into the hood
- the electrical wiring of the hood is required for generating the X-rays anyway.
- the pump and its drive motor by using a squirrel-cage motor, the rotor of which also acts as a conveying means for the pump, i.e. the pump is also part of the drive motor.
- This is achieved in a simple manner by designing the rotor of the motor in the form of a tube which carries the pumping means, for example enclosing a propeller designed in the form of a propeller, or by fitting the blades of the rotor of a centrifugal pump onto one end of the rotor are.
- the rotor itself can be made in the manner known from X-ray tubes from a two-layer material, of which one is copper and the other is iron. A favorable construction is obtained by pulling a copper pipe over an iron pipe.
- the diameter of the rotor is expediently adapted to the required flow.
- the rotor can be guided on an axis in ball bearings, which in turn are attached to a stainless steel tube surrounding the rotor via cantilevers.
- the stator can be attached to the outside of this tube. This can be designed in particular in the way that is used for driving the anode of X-ray tubes.
- the rotor can be accommodated in the tube hood so that it is enclosed by the insulating coolant.
- the pump can also be attached to the hood so that the rotor is then outside the hood.
- Mains alternating current of 50 or 60 Hz can be used to drive the pump, as is also used to drive the anode of X-ray tubes.
- Mains alternating current of 50 or 60 Hz can be used to drive the pump, as is also used to drive the anode of X-ray tubes.
- no additional power supply needs to be provided for the pump, since a drive for the rotating anode must be present anyway.
- FIG. 1 shows an X-ray emitter, partially broken away, in which a pump is provided in the hood, the pumping means of which is a propeller,
- a tubular hood 1 is shown partially broken open, which contains a rotating anode X-ray tube 2.
- This tube 2 has a cathode arrangement 3 at its rear end and an anode arrangement 4 opposite it.
- the arrangement 3 comprises, in a manner known per se, a hot cathode 5, which consists of two separately switchable parts.
- an anode plate 7 In front of the arrangement 4 there is an anode plate 7 opposite the cathode 5. Electron beams 6, which emanate from the cathode 5, thus reach the focal spot path of the anode plate 6, which is connected via an axis to a rotor 8 used for driving in a known manner.
- the tube 2 is assigned a stator 9 from the outside at the point where the rotor 8 is located.
- the tube hood 1 has a radiation outlet tube 10 on the side facing the radiation outlet of the tube 2.
- the entire hood 1 is supported via a support arm 11 in a known manner, for example locally on an X-ray device.
- the operating voltages are supplied via connections 14 to 16 and 17 to 19. These come from an electrical operating device known per se which can be fed from the mains.
- a housing 20 of a circulation pump is attached at the upper end. It contains a rotor 21 which is mounted in bearings 22 on an axis 23. Inside the rotor 21 there is also a propeller 24 to promote the oil filled in the hood 1.
- the rotor 21 is set in motion by means of a stator 25 which is located on the outside of the housing 20. For this purpose, the stator receives the drive current via lines 26, 27, which is supplied to the stator 9 of the tube 2 via lines 17 and 18.
- the propeller 24 is set in motion, and oil is pressed out of the hood 1 into a line 30, which opens into the end 31 of the hood 1 opposite the pump 20, so that when the pump is operating, a recirculation of the one filled in the hood 1 takes place Coolant is done.
- the rotor 21 consists of a 1.5 mm thick and 52 mm clear tube 32 made of copper, on the inside of which is a 1 mm thick tube 33 made of iron. Supports 35 are provided to hold the bearing 23 on the housing 20.
- cooling water can be passed through a pipe 36 as indicated by arrows 37 and 38.
- the pump is brought into the form of a centrifugal pump, in which the stator 25 corresponds to that according to 4, 1 and 3 and is attached to the outside of the pump housing 20.
- the rotor 21 is free of pumping means and is guided on its axis 23 in bearings 22.
- the wings 40 of a centrifugal pump are placed on top of the rotor 21 as the pumping means, so that, as indicated by an arrow 41, the coolant is pressed into the discharge line, which is expanded in a funnel shape as indicated at 30 and 4, so that A coolant circuit is also achieved here.
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- X-Ray Techniques (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Claims (9)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE8531503U DE8531503U1 (de) | 1985-11-07 | 1985-11-07 | Röntgenstrahler |
DE8531503U | 1985-11-07 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0225463A1 EP0225463A1 (fr) | 1987-06-16 |
EP0225463B1 true EP0225463B1 (fr) | 1989-05-31 |
Family
ID=6787040
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP86114903A Expired EP0225463B1 (fr) | 1985-11-07 | 1986-10-27 | Emetteur de rayons X |
Country Status (4)
Country | Link |
---|---|
US (1) | US4841557A (fr) |
EP (1) | EP0225463B1 (fr) |
JP (1) | JPS6281400U (fr) |
DE (2) | DE8531503U1 (fr) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5185774A (en) * | 1990-11-23 | 1993-02-09 | Pxt Technology, Inc. | X-ray tube construction |
US5732123A (en) * | 1993-07-13 | 1998-03-24 | David V. Habif, Jr. | Method and system for extending the service life of an x-ray tube |
US5440608A (en) * | 1993-07-13 | 1995-08-08 | David V. Habif, Jr. | Method and system for extending the service life of an x-ray tube |
US5596622A (en) * | 1993-07-13 | 1997-01-21 | David V. Habif, Jr. | Method and system for extending the service life of an x-ray tube |
US5802140A (en) * | 1997-08-29 | 1998-09-01 | Varian Associates, Inc. | X-ray generating apparatus with integral housing |
US6254272B1 (en) | 1999-02-05 | 2001-07-03 | Maurice D. Dilick | Method and apparatus for extending the life of an x-ray tube |
US6361208B1 (en) | 1999-11-26 | 2002-03-26 | Varian Medical Systems | Mammography x-ray tube having an integral housing assembly |
US6411042B1 (en) * | 1999-12-29 | 2002-06-25 | Honeywell International Inc. | Display cold spot temperature regulator |
US7079624B1 (en) | 2000-01-26 | 2006-07-18 | Varian Medical Systems, Inc. | X-Ray tube and method of manufacture |
US7209546B1 (en) | 2002-04-15 | 2007-04-24 | Varian Medical Systems Technologies, Inc. | Apparatus and method for applying an absorptive coating to an x-ray tube |
US7543987B2 (en) * | 2004-12-29 | 2009-06-09 | Varian Medical Systems, Inc. | Modular cooling unit for x-ray device |
US7376218B2 (en) * | 2006-08-16 | 2008-05-20 | Endicott Interconnect Technologies, Inc. | X-ray source assembly |
CN108257837B (zh) * | 2018-03-14 | 2019-11-15 | 苏州博思得电气有限公司 | 组合机头及射线影像设备 |
CN108717893A (zh) * | 2018-03-14 | 2018-10-30 | 苏州博思得电气有限公司 | 变压器、组合机头及射线影像设备 |
DE102020208976A1 (de) * | 2020-07-17 | 2022-01-20 | Siemens Healthcare Gmbh | Röntgenquellenvorrichtung umfassend eine Anode zur Erzeugung von Röntgenstrahlen |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2259037A (en) * | 1940-02-23 | 1941-10-14 | Picker X Ray Corp Waite Mfg | Cooling x-ray tubes |
SE362571B (fr) * | 1971-12-02 | 1973-12-10 | Ericsson Telefon Ab L M | |
DE2204894A1 (de) * | 1972-02-02 | 1973-08-16 | Siemens Ag | Roentgenroehreneinheit |
GB1527813A (en) * | 1976-06-02 | 1978-10-11 | Emi Ltd | Cooling x-ray apparatus |
DE2813860A1 (de) * | 1978-03-31 | 1979-10-04 | Philips Patentverwaltung | Eintank-roentgengenerator |
JPS5546408A (en) * | 1978-09-29 | 1980-04-01 | Toshiba Corp | X-ray device |
US4369517A (en) * | 1980-02-20 | 1983-01-18 | Litton Industrial Products, Inc. | X-Ray tube housing assembly with liquid coolant manifold |
FR2575329B1 (fr) * | 1984-12-21 | 1987-01-16 | Thomson Cgr | Gaine equipee a convection forcee pour tube radiogene a anode tournante |
-
1985
- 1985-11-07 DE DE8531503U patent/DE8531503U1/de not_active Expired
-
1986
- 1986-10-06 US US06/915,704 patent/US4841557A/en not_active Expired - Fee Related
- 1986-10-27 EP EP86114903A patent/EP0225463B1/fr not_active Expired
- 1986-10-27 DE DE8686114903T patent/DE3663765D1/de not_active Expired
- 1986-11-04 JP JP1986169444U patent/JPS6281400U/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
EP0225463A1 (fr) | 1987-06-16 |
JPS6281400U (fr) | 1987-05-25 |
US4841557A (en) | 1989-06-20 |
DE8531503U1 (de) | 1987-03-05 |
DE3663765D1 (en) | 1989-07-06 |
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