EP0426898B1 - Emetteur de rayons X - Google Patents

Emetteur de rayons X Download PDF

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Publication number
EP0426898B1
EP0426898B1 EP89120808A EP89120808A EP0426898B1 EP 0426898 B1 EP0426898 B1 EP 0426898B1 EP 89120808 A EP89120808 A EP 89120808A EP 89120808 A EP89120808 A EP 89120808A EP 0426898 B1 EP0426898 B1 EP 0426898B1
Authority
EP
European Patent Office
Prior art keywords
ray source
source according
ray
insertion head
tube
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 - Lifetime
Application number
EP89120808A
Other languages
German (de)
English (en)
Other versions
EP0426898A1 (fr
Inventor
Fred Ing. Meinel (Grad)
Richard Dipl.Ing. Eichhorn (Fh)
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
Priority to EP89120808A priority Critical patent/EP0426898B1/fr
Priority to DE89120808T priority patent/DE58905402D1/de
Priority to US07/607,467 priority patent/US5083307A/en
Priority to JP1990116151U priority patent/JP2526568Y2/ja
Publication of EP0426898A1 publication Critical patent/EP0426898A1/fr
Application granted granted Critical
Publication of EP0426898B1 publication Critical patent/EP0426898B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H05G1/06—X-ray tube and at least part of the power supply apparatus being mounted within the same housing
    • 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 with an x-ray tube, which is provided with a heat sink and is arranged in a housing filled with coolant, which has a trough and a mounting head.
  • x-ray emitters are used in particular as single-boiler x-ray diagnostic generators for receiving all the components required for x-ray generation.
  • Such an X-ray source is described in DE-U 81 32 991.
  • An X-ray tube is arranged on the base plate, the mounting head of a single oil-filled container, in the vicinity of an exit window incorporated in the mounting head.
  • Two high-voltage transformers are attached to the mounting head symmetrically next to the X-ray tube.
  • heating transformers for the fokens of the x-ray tube are arranged.
  • Rectifiers and high-voltage capacitors are located on the side of the X-ray tube facing away from the radiator, symmetrical to the radiation exit window.
  • US Pat. No. 4,384,360 shows an X-ray emitter which has a tubular housing which is closed laterally with covers and is filled with a cooling gas. There is an X-ray tube inside the housing, which is provided with a heat sink. The x-ray emitter has a heat exchanger. A circulation of the cooling gas is through a Keep the fan running.
  • the invention is based on the object of creating an X-ray source of the type mentioned at the outset, with which good position-independent dissipation, uniform distribution and reduction of the heat is achieved.
  • the heat exchanger is designed as a bump incorporated in the mounting head and provided with cooling fins. This ensures good heat emission to the air. By training as a hump, the circulation is still preferred.
  • the high-voltage transformers are arranged on the side of the X-ray tube facing away from the mounting head.
  • a reduction in heat generation through the high voltage transformers through lossless material is achieved if the cores of the high voltage transformers are made of amorphous metals, eg Vitrovac.
  • the rectifiers and capacitors are arranged on a circuit board on the side of the X-ray tube facing away from the mounting head, for example between the X-ray tube and high-voltage transformers.
  • a better separation of the X-ray tube from the other components and a better dissipation of the heat of the X-ray tube is achieved if the X-ray tube is attached to a tube support which has openings in the area of the heat sink and the end of the X-ray tube facing away from the heat sink. Thereby a flow of the oil along the X-ray tube, which arises due to the electric field, can be promoted. The volume of the coolant flowing past the X-ray tube can be increased if the tube support has a rectangular profile.
  • Such a built-in X-ray tube can also be adjusted subsequently when the radiator is assembled if the tube support has threads into which screws which are rotatably fastened on the mounting head engage.
  • a secure mounting of the components and an additional conduction of the heat flows is achieved if an intermediate support is provided on which the transformers and / or the circuit board with the capacitors and rectifiers are arranged, and if the intermediate support in the region of the two ends of the X-ray tube has vertical partition walls having.
  • the supply voltages can advantageously be led outwards if the mounting head has an opening which is covered by an oil-tight circuit board which is provided with contact pins.
  • the circuit board or printed circuit board is particularly oil-tight if it is created using SIL technology.
  • the tube support is made of plastic and if lead sheets are attached to it.
  • the X-ray emitter can be kept particularly oil-tight if the mounting head engages in the housing and is sealed with sealant and screwed together with screws that engage laterally.
  • the heat removal capacity of the heat exchanger is increased if a device for holding the X-ray emitter is arranged in its area. It has proven to be advantageous if the mounting head of the housing is covered with a hood which engages with a nose in a groove and is screwed to the mounting head on the other side.
  • FIG. 1 shows an X-ray emitter with an oil-filled housing, which consists of a trough 1 and a mounting head 2.
  • a hood 3 is placed over the mounting head 2.
  • An X-ray tube 4, a circuit board 5 with rectifiers and high-voltage capacitors, two high-voltage transformers 6 and 7 and a heating transformer 8 are arranged in the oil-filled housing of the X-ray source.
  • a radiation exit window 9 is arranged in the middle of the assembly head 2.
  • a tube support 10 for the X-ray tube 4 is attached to the mounting head 2 by holding means 26 to 28, not shown in this figure, and is made in two parts.
  • the X-ray tube 4 is fastened with its foot, to which an asymmetrical heat sink 13 is attached.
  • the upper part 11 of the tube support 10 is provided with an opening 14.
  • the tube support 10 is bent upward, so that the opening 14 projects into a heat exchanger 15 which is designed as a bump belonging to the mounting head 2.
  • the heat exchanger 15 is provided with cooling fins 16.
  • the lower part 12 of the tube support 10 encompasses only the actual X-ray tube 4 and not the heat sink 13, so that the heat sink 13 heats up during operation of the X-ray tube 4 and, due to gravity, causes a flow of the oil as a coolant upwards, whereby in the Figure 1 shown position of the X-ray tube directly into the heat exchanger 15, where it can be cooled. The cooled oil then falls down due to gravity and can then rise again.
  • This coolant circuit due to gravity is guided through the partition 17, which forms part of a component carrier 19.
  • the asymmetrical heat sink which heats up independently of gravity due to heat conduction, heats the lower part of the cooling oil and thus supports the coolant circuit.
  • the lower part 12 of the tube carrier 10 likewise has an opening 20. Furthermore, a gap is left between the two parts 11 and 12, so that the coolant can also pass through this.
  • the component carrier 19 is provided with a vertically arranged partition wall 18, which also supports a heat cycle here.
  • the tube carrier 10 has a rectangular profile, so that as much oil as possible can pass through this tube carrier 10 and thus cool the X-ray tube 4. Due to the electric field, a second flow occurs in the longitudinal direction of the X-ray tube 4 and the tube support 10, so that the X-ray tube 4 is cooled not only via the heat sink 13 but also via the tube piston. This also results in circulation and an exchange of the coolant, so that the coolant heated at the head of the X-ray tube 4 can also reach the heat exchanger 15.
  • the printed circuit board 5 On the component carrier 19, on the side of the tube carrier 10 facing away from the mounting head 2, the printed circuit board 5 is attached, on which the high-voltage capacitors 34 and rectifiers, not shown, are arranged.
  • the high-voltage transformers 6 and 7 and the heating transformer 8 are then arranged below the printed circuit board 5.
  • their cores 35 are made made of amorphous metal, such as Vitrovac.
  • the heat exchanger 15 is provided with an opening 21 which is covered by a circuit board 22.
  • the voltage feedthrough is thereby achieved by contact pins 23 which are passed through the circuit board 22.
  • the circuit board 22, like the circuit board 5, can be created using the so-called SIL technology.
  • SIL technology a molded part made of plastic is created, which is then coated with a layer of conductive material that forms the solder contacts and tracks. This special structure ensures that the contact bushing is oil-tight.
  • the mounting head 2 of the x-ray emitter also has a hump 24 on its side opposite the heat exchanger 15, which serves to receive a pressure compensation membrane.
  • the tub 1 and the mounting head 2 of the X-ray emitter are covered by the hood 3, which overlaps the tub 1 laterally.
  • the hood 3 is provided on one narrow side with a nose 25 which engages in a groove. This groove can either be provided in the tub 1 or, as shown in FIG. 1, be formed between the tub 1 and the mounting head 2.
  • the hood 3 reaches over the heat exchanger 15 and is connected to it there by means of screws 36 (FIG. 3).
  • trough 1 and hood 3 have cutouts and, as can be seen in FIG. 3, support surfaces 37, into which a support arm for the X-ray emitter, for example a C-arm, can engage, which connects the area of the heat exchanger 15 to the X-ray emitter. A further heat dissipation of the heat exchanger 15 is achieved via the support arm.
  • FIG. 2 shows a section along the line II-II through the X-ray emitter. It can be seen that the Tube support 10 is connected to the mounting head 2 via adjustable holding means 26 to 28.
  • the holding means consist of screws 26 which engage with their threaded part in the thread attached to the tube support 10.
  • the screws 26 are supported on the mounting head 2 by means of projections.
  • the other side of the screw 26 is also provided with a thread on which a lock nut 27 is screwed. Sealing rings 28 cause the bushing for the screws 26 to be kept oil-tight.
  • the height of the tube support 10 and thus the X-ray tube 4 can be adjusted, tilted on the anode or cathode side and rotated about its axis, since the height of the screws 26 is firmly connected to the mounting head 2.
  • a parallel offset to the depth diaphragm can be compensated for using an additional adjustment ring.
  • the tube carrier 10 has an essentially rectangular cross section. It can be made of plastic, for example. To reduce the x-ray radiation, it is provided with lead sheets 29 which engage, for example, in slots provided on the tube support 10 and are held by the latter.
  • the mounting head 2 is essentially inserted into the tub 1. It tapers downward in the form of a step 30.
  • the trough 1 is provided with a projection 31, so that a rectangular or square-shaped space is formed between the step 30 and the projection 31, in which a sealant is provided for sealing against the coolant .
  • This sealant can consist, for example, of an O-ring 32.
  • O-ring 32 By the pressure of the walls in the radial direction and the pressure of the mounting head 2 in the vertical direction, this O-ring 32 is pressed between the step 30 and the projection 31 and the side walls of the mounting head 2 and tub 1.
  • the mounting head 2 is connected to the pan 1 by countersunk screws 33, these countersunk screws 33 through the wall of the pan 1 into the mounting head 2 intervention. This axial screwing ensures that the contact pressure of the O-ring 32 is always kept the same. It is also achieved in that the countersunk screws 33 are covered by the hood 3 when it is attached, so that they cannot interfere.
  • a rubber sealing ring can be used as the O-sealing ring 32, which is preformed in such a way that it is adapted to the rectangular shape of the X-ray emitter, so that there is little or no stretching in its edge regions and therefore almost no constriction.
  • the supply of voltage to the contact pins 23 can be seen in FIG.
  • the corresponding cables are guided by the support arm through an opening 38 so that their ends can be connected to the contact pins 23, for example via cable lugs.
  • the cables can be clamped to the holder in a known manner.
  • Such an x-ray emitter is position-independent with regard to its cooling. If, for example, the X-ray emitter 1 to 3 is rotated by 180 °, the heat from the heat sink 13 rises again, but only passes the partition 17 of the component carrier 19 and then flows back outside to the heat exchanger 15, where the oil is cooled again , so that it can reach the heat sink 13 again through the opening 14. Adequate cooling is achieved even with a rotation of only 90 °, since in addition to the flow of gravity, the flow is also caused by the electric field along the X-ray tube 4.

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  • X-Ray Techniques (AREA)

Claims (16)

  1. Émetteur radiologique comportant un tube à rayons X (4), qui est muni d'un dissipateur de chaleur (13) et qui est disposé dans un boîtier (1,2) empli d'un fluide de refroidissement et comportant une cuvette (1) et une tête de montage (2), le dissipateur de chaleur (13) étant disposé au voisinage d'un échangeur de chaleur (15), et il est prévu des dispositifs de guidage (17,18), de manière à provoquer sous l'action de la force de pesanteur, une circulation du fluide de refroidissement, qui est chauffé dans le dissipateur de chaleur (13) et qui est refroidi dans l'échangeur de chaleur (15).
  2. Émetteur radiologique suivant la revendication 1, caractérisé par le fait que l'échangeur de chaleur (15) est réalisé sous la forme d'un bossage formé sur la tête de montage (2) et muni d'ailettes de refroidissement (16).
  3. Émetteur radiologique suivant la revendication 1 ou 2, dans lequel des transformateurs à haute tension (6,7) sont disposés dans le boîtier (1,2), caractérisé par le fait que les transformateurs à haute tension (6,7) sont disposés sur le côté, tourné à l'opposé de la tête de montage (2), du tube à rayons X (4).
  4. Émetteur radiologique suivant l'une des revendications 1 à 3, caractérisé par le fait que les noyaux (35) des transformateurs à haute tension (6,7) sont en un matériau amorphe.
  5. Émetteur radiologique suivant l'une des revendications 1 à 4, dans lequel des redresseurs et des condensateurs (34) sont disposés dans le boîtier (1,2), caractérisé par le fait que les redresseurs et les condensateurs (34) sont disposés sur une plaquette à circuits imprimés (5) sur le côté, tourné à l'opposé de la tête de montage (2), du tube à rayons X (4).
  6. Émetteur radiologique suivant l'une des revendications 1 à 5, caractérisé par le fait que le tube à rayons X (4) est fixé à un support (10), qui possède des ouvertures (14,20) au voisinage du dissipateur de chaleur (13) et de l'extrémité, tournée à l'opposé dudit corps de refroidissement (13), du tube à rayons X (7).
  7. Émetteur radiologique suivant la revendication 6, caractérisé par le fait que le support (10) du tube a un profit rectangulaire.
  8. Émetteur radiologique suivant la revendication 6 ou 7, caractérisé par le fait que le support (10) du tube comporte des taraudages, dans lesquels s'engagent des vis (26) fixées de manière à pouvoir tourner sur la tête de montage (2).
  9. Émetteur radiologique suivant l'une des revendications 3 à 8, caractérisé par le fait qu'il est prévu un porte-éléments (19), sur lequel sont disposés les transformateurs (6 à 8) et/ou la plaquette à circuits imprimés (5) munie des condensateurs (34) et des redresseurs, et que le porte-éléments (19) a des cloisons (17,18) verticales, au voisinage des deux extrémités du tube à rayons X (4).
  10. Émetteur radiologique suivant l'une des revendications 1 à 9, caractérisé par le fait que la tête de montage (2) a une ouverture (21), qui est recouverte par une platine (22) étanche à l'huile et qui est munie de broches de contact (23).
  11. Émetteur radiologique suivant l'une des revendications 5 à 10, caractérisé par le fait que la platine (22) et/ou la plaquette à circuits imprimés (5) sont réalisées selon la technique SIL.
  12. Émetteur radiologique suivant l'une des revendications 1 à 11, caractérisé par le fait que le support (10) du tube est en matière plastique et que des tôles en plomb (25) sont montées sur ce support.
  13. Émetteur radiologique suivant l'une des revendications 1 à 12, caractérisé par le fait que la tête de montage (2) s'engage dans la cuvette (1) et est rendue étanche à l'aide d'agent d'étanchéité (32) et est vissée au moyen de vis (33) vissées latéralement.
  14. Émetteur radiologique suivant l'une des revendications 1 à 13, caractérisé par le fait qu'au voisinage de l'échangeur de chaleur (15) est disposé un dispositif (37) servant à retenir l'émetteur radiologique (1 à 3).
  15. Émetteur radiologique suivant l'une des revendications 1 à 14, caractérisé par le fait que la tête de montage (2) du boîtier (1,2) est recouverte d'un capot (3), qui pénètre par un bec (25) dans une rainure et qui, de l'autre côté, est vissé à la tête de montage (2).
  16. Émetteur radiologique comportant un tube à rayons X (1), des transformateurs (6 à 8), des redresseurs et des condensateurs (34) et dans lequel tous les éléments constitutifs sont disposés dans un seul boîtier (1,2) empli d'huile, qui est constitué d'une cuvette (1) et d'une tête de montage (2), la tête de montage (2) ayant une fenêtre (9) de sortie pour le rayonnement X, le tube à rayons X (4) étant muni d'un dissipateur de chaleur (13) dissymétrique, qui est disposé au voisinage d'un échangeur de chaleur (15) situé sur la tête de montage (2), et il est prévu des dispositifs de guidage (10,17,18), de manière à provoquer sous l'action de la force de pesanteur, une circulation de l'huile chauffée dans le dissipateur de chaleur (13) et refroidie dans l'échangeur de chaleur (15).
EP89120808A 1989-11-09 1989-11-09 Emetteur de rayons X Expired - Lifetime EP0426898B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP89120808A EP0426898B1 (fr) 1989-11-09 1989-11-09 Emetteur de rayons X
DE89120808T DE58905402D1 (de) 1989-11-09 1989-11-09 Röntgenstrahler.
US07/607,467 US5083307A (en) 1989-11-09 1990-10-31 X-ray radiator
JP1990116151U JP2526568Y2 (ja) 1989-11-09 1990-11-05 Ｘ線放射器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP89120808A EP0426898B1 (fr) 1989-11-09 1989-11-09 Emetteur de rayons X

Publications (2)

Publication Number Publication Date
EP0426898A1 EP0426898A1 (fr) 1991-05-15
EP0426898B1 true EP0426898B1 (fr) 1993-08-25

Family

ID=8202114

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89120808A Expired - Lifetime EP0426898B1 (fr) 1989-11-09 1989-11-09 Emetteur de rayons X

Country Status (4)

Country Link
US (1) US5083307A (fr)
EP (1) EP0426898B1 (fr)
JP (1) JP2526568Y2 (fr)
DE (1) DE58905402D1 (fr)

Families Citing this family (12)

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Publication number Priority date Publication date Assignee Title
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
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
US6254272B1 (en) 1999-02-05 2001-07-03 Maurice D. Dilick Method and apparatus for extending the life of an x-ray tube
JP2002310339A (ja) * 2001-04-13 2002-10-23 Sekisui Chem Co Ltd 配管化粧カバー
JP3892712B2 (ja) * 2001-11-27 2007-03-14 ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー Ｘ線発生装置
JP4163224B2 (ja) * 2006-07-03 2008-10-08 ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー 体積変化吸収器、ｘ線発生器およびｘ線撮影装置
US7620151B2 (en) * 2007-08-07 2009-11-17 General Electric Co High voltage tank assembly for radiation generator
JP4880771B2 (ja) 2010-07-21 2012-02-22 株式会社ジョブ Ｘ線発生装置
JP5984367B2 (ja) 2011-12-02 2016-09-06 キヤノン株式会社 放射線発生装置及びそれを用いた放射線撮影システム
JP5899006B2 (ja) 2012-03-02 2016-04-06 浜松ホトニクス株式会社 Ｘ線照射源
WO2014041630A1 (fr) 2012-09-12 2014-03-20 株式会社システムスクエア Dispositif d'essai à rayons x

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US2353720A (en) * 1942-02-23 1944-07-18 Picker X Ray Corp Waite Mfg Cooled x-ray tube head
US2457961A (en) * 1946-09-26 1949-01-04 Wm Meyer Company X-ray unit
US2548489A (en) * 1946-12-20 1951-04-10 Ritter Co Inc X-ray apparatus
JPS5539104A (en) * 1978-09-12 1980-03-18 Toshiba Corp X-ray generator
DE7935945U1 (de) * 1979-12-20 1981-06-11 Siemens AG, 1000 Berlin und 8000 München Roentgendiagnostikgenerator mit zwei die roentgenroehre speisenden hochspannnungstransformatoren
DE8132991U1 (de) * 1981-11-11 1983-04-28 Siemens AG, 1000 Berlin und 8000 München Einkessel-roentgendiagnostikgenerator
JPS61198599A (ja) * 1985-02-27 1986-09-02 Hitachi Medical Corp 回転陽極ｘ線管装置
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JPH0691305B2 (ja) * 1986-02-28 1994-11-14 ナイルス部品株式会社 Ｓｉｌ型混成集積回路基板
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Also Published As

Publication number Publication date
DE58905402D1 (de) 1993-09-30
EP0426898A1 (fr) 1991-05-15
JPH0376399U (fr) 1991-07-31
US5083307A (en) 1992-01-21
JP2526568Y2 (ja) 1997-02-19

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