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EP0426897A1 - X-ray emitter - Google Patents

X-ray emitter Download PDF

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Publication number
EP0426897A1
EP0426897A1 EP89120807A EP89120807A EP0426897A1 EP 0426897 A1 EP0426897 A1 EP 0426897A1 EP 89120807 A EP89120807 A EP 89120807A EP 89120807 A EP89120807 A EP 89120807A EP 0426897 A1 EP0426897 A1 EP 0426897A1
Authority
EP
European Patent Office
Prior art keywords
ray
mounting head
tube
ray tube
screws
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.)
Granted
Application number
EP89120807A
Other languages
German (de)
French (fr)
Other versions
EP0426897B1 (en
Inventor
Fred Ing. Meinel (Grad)
Dorothea Wilke
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
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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, Siemens Corp filed Critical Siemens AG
Priority to DE89120807T priority Critical patent/DE58905921D1/en
Priority to EP89120807A priority patent/EP0426897B1/en
Priority to US07/606,919 priority patent/US5067146A/en
Priority to JP1990116152U priority patent/JP2515890Y2/en
Publication of EP0426897A1 publication Critical patent/EP0426897A1/en
Application granted granted Critical
Publication of EP0426897B1 publication Critical patent/EP0426897B1/en
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 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 housing, 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.
  • At one end of the X-ray tube one or two 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. These are welded together for the oil-tight connection of the assembly head to the tub.
  • the problem with such an X-ray source is that the X-ray tube cannot be aligned with respect to the radiation exit window and the beam direction in the installed state under the operating condition.
  • the invention is based on the object of creating an X-ray emitter of the type mentioned at the outset, in which the alignment of the X-ray tube and thus the X-ray beam can also be adjusted when the housing is assembled.
  • the object is achieved in that the X-ray tube is held by a tube carrier which is adjustably connected to the housing by holding means. It is thereby achieved that the holding means bring about an adjustment of the tube support holding the x-ray tube from the outside without opening the housing, so that an adjustment of the x-ray tube can be carried out in a simple manner.
  • the adjustable holding means consist of screws which are rotatably fastened to the mounting head and which engage in threads attached to the tube carrier. Due to the thread, the height of the tube support and thus the X-ray tube can be adjusted at several points by means of the rotatably fastened screws, which are supported in a fixed position on the mounting head, so that the X-ray beam can be adjusted three-dimensionally.
  • the screws have a threaded part which engages in the thread fastened to the tube support, if the screws have a thickening which engages in a bore in the mounting head and is supported on the mounting head, and if the screws are open the other side are also provided with a thread on which a lock nut is screwed, which is supported on the mounting head.
  • the housing can be oil-tight if the bushing through the mounting head for the holding means is provided with a seal.
  • FIG. 1 shows an X-ray emitter with an oil-filled housing, which consists of a trough 1 and an assembly head 2 exists.
  • 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 to the upper part 11 of the tube carrier 10 with its foot, to which a heat sink 13 is attached asymmetrically.
  • 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 passes 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 further supported by the partition wall 17, which forms part of a component carrier 19.
  • 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. Also in this area the component carrier 19 is provided with a vertically arranged partition wall 18 which also supports a heat cycle.
  • 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 bulb. 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 high-voltage transformers 6 and 7 and the heating transformer 8 are then arranged below the printed circuit board 5. So that the high-voltage transformers 6 and 7 work as loss-free as possible and generate only little heat, their cores 35 are 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 supply is 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 has the heat on it Meleyer 15 opposite side also on a hump 24, which serves to accommodate 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.
  • To hold the hood 2 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.
  • the trough 1 and the hood 3 have cutouts and support surfaces 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.
  • a support arm for the X-ray emitter for example a C-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 tube support 10 and thus the X-ray tube 4 can thus be adjusted in height, tilted on the anode or cathode side and rotated about their axis, since the height of the screws 26 is firmly connected to the mounting head 2.
  • 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.
  • a sealant for example an O-ring 32, is introduced, which is held by the pressure of the walls in the radial direction and the contact pressure of the mounting head 2 in the vertical direction and causes a seal.
  • the mounting head 2 is screwed in the axial direction so that the contact pressure of the O-ring 32 is always the same for all X-ray emitters.
  • a rubber sealing ring can be used as the O-sealing ring 32, which is pre-shaped 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 height of the x-ray tube 4 can be adjusted once by the tube support 10 and, for example, four screws 26 engaging the tube support 10, so that the width of the x-ray beam can be adjusted. Furthermore, the x-ray tube 4 can be adjusted in the direction of its longitudinal axis or transversely thereto by adjusting two screws 26 each. The fact that the tube support 10 is made of plastic can be twisted by adjusting only one screw 26, so that diagonal adjustments of the X-ray tube 4 are also possible.
  • This inventive design of the X-ray emitter allows the X-ray tube 4 to be adjusted and adjusted even in the assembled state, so that the assembly effort is simplified.

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  • X-Ray Techniques (AREA)

Abstract

Die Erfindung betrifft einen Röntgenstrahler mit einer Röntgen­röhre (4), die in einem mit Kühlmittel gefüllten Gehäuse (1 bis 3) angeordnet ist, das eine Wanne (1) und einen Montagekopf (2) aufweist. Die Röntgenröhre (4) wird von einem Röhrenträger (10) gehalten, der durch Haltemittel (26 bis 28) verstellbar mit dem Gehäuse (1 bis 3) verbunden ist.

Figure imgaf001
The invention relates to an x-ray emitter with an x-ray tube (4) which is arranged in a housing (1 to 3) filled with coolant, which has a trough (1) and a mounting head (2). The x-ray tube (4) is held by a tube support (10) which is adjustably connected to the housing (1 to 3) by holding means (26 to 28).
Figure imgaf001

Description

Die Erfindung betrifft einen Röntgenstrahler mit einer Röntgen­röhre, die in einem mit Kühlmittel gefüllten Gehäuse angeordnet ist, das eine Wanne und einen Montagekopf aufweist. Derartige Röntgenstrahler dienen insbesondere als Einkessel-Röntgendiagno­stikgeneratoren zur Aufnahme sämtlicher für die Röntgenstrahlen­erzeugung notwendigen Bauelemente.The invention relates to an x-ray emitter with an x-ray tube, which is arranged in a housing filled with coolant, which has a trough and a mounting head. Such x-ray emitters are used in particular as single-boiler x-ray diagnostic generators for receiving all the components required for x-ray generation.

Ein derartiger Röntgenstrahler ist in der DE-U 81 32 991 be­schrieben. An der Grundplatte, dem Montagekopf eines einzigen ölgefüllten Gehäuses, ist in der Nähe eines in dem Montagekopf eingearbeiteten Austrittsfensters eine Röntgenröhre angeordnet. Zwei Hochspannungstransformatoren sind symmetrisch neben der Röntgenröhre an dem Montagekopf befestigt. An dem einen Ende der Röntgenröhre sind ein oder zwei Heiztransformatoren für die Foken der Röntgenröhre angeordnet. Gleichrichter und Hochspan­nungskondensatoren liegen auf der der Strahlerseite abgewandten Seite der Röntgenröhre symmetrisch zum Strahlenaustrittsfen­ster. Zur öldichten Verbindung des Montagekopfes mit der Wanne sind diese miteinander verschweißt. Bei einem derartigen Rönt­genstrahler tritt dabei das Problem auf, daß eine Ausrichtung der Röntgenröhre in bezug auf das Strahlenaustrittsfenster und der Strahlrichtung im eingebauten Zustand unter Betriebsbedin­gung nicht erfolgen kann.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 housing, 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. At one end of the X-ray tube, one or two 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. These are welded together for the oil-tight connection of the assembly head to the tub. The problem with such an X-ray source is that the X-ray tube cannot be aligned with respect to the radiation exit window and the beam direction in the installed state under the operating condition.

Die Erfindung geht von der Aufgabe aus, einen Röntgenstrahler der eingangs genannten Art zu schaffen, bei dem eine Einstel­lung der Ausrichtung der Röntgenröhre und damit des Röntgen­strahlenbündels auch bei zusammengebautem Gehäuse erfolgen kann.The invention is based on the object of creating an X-ray emitter of the type mentioned at the outset, in which the alignment of the X-ray tube and thus the X-ray beam can also be adjusted when the housing is assembled.

Die Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Rönt­genröhre von einem Röhrenträger gehalten wird, der durch Halte­mittel verstellbar mit dem Gehäuse verbunden ist. Dadurch wird erreicht, daß von außen ohne Öffnung des Gehäuses die Haltemit­tel eine Verstellung des die Röntgenröhre haltenden Röhrenträ­gers bewirken, so daß eine Justage der Röntgenröhre auf einfa­che Weise erfolgen kann.The object is achieved in that the X-ray tube is held by a tube carrier which is adjustably connected to the housing by holding means. It is thereby achieved that the holding means bring about an adjustment of the tube support holding the x-ray tube from the outside without opening the housing, so that an adjustment of the x-ray tube can be carried out in a simple manner.

Es hat sich als vorteilhaft erwiesen, wenn die verstellbaren Haltemittel aus drehbar an dem Montagekopf befestigten Schrau­ben bestehen, die in an dem Röhrenträger angebrachte Gewinde eingreifen. Durch die drehbar befestigten Schrauben, die sich am Montagekopf lagefest abstützen, läßt sich aufgrund des Ge­windes die Höhe des Röhrenträgers und damit der Röntgenröhre an mehreren Punkten einstellen, so daß eine dreidimensionale Verstellung des Röntgenstrahlenbündels erfolgen kann. Es hat sich dabei als vorteilhaft erwiesen, wenn die Schrauben einen Gewindeteil aufweisen, der in das am Röhrenträger befestigte Gewinde eingreift, wenn die Schrauben eine Verdickung aufwei­sen, die in eine am Montagekopf angebrachte Bohrung eingreift und sich am Montagekopf abstützt, und wenn die Schrauben auf der anderen Seite ebenfalls mit einem Gewinde versehen sind, auf das eine Sicherungsmutter geschraubt ist, die sich an dem Montagekopf abstützt. Das Gehäuse kann öldicht ausgeführt sein, wenn die Durchführung durch den Montagekopf für die Haltemittel mit einer Dichtung versehen ist.It has proven to be advantageous if the adjustable holding means consist of screws which are rotatably fastened to the mounting head and which engage in threads attached to the tube carrier. Due to the thread, the height of the tube support and thus the X-ray tube can be adjusted at several points by means of the rotatably fastened screws, which are supported in a fixed position on the mounting head, so that the X-ray beam can be adjusted three-dimensionally. It has proven to be advantageous if the screws have a threaded part which engages in the thread fastened to the tube support, if the screws have a thickening which engages in a bore in the mounting head and is supported on the mounting head, and if the screws are open the other side are also provided with a thread on which a lock nut is screwed, which is supported on the mounting head. The housing can be oil-tight if the bushing through the mounting head for the holding means is provided with a seal.

Die Erfindung ist nachfolgend anhand eines in der Zeichnung dargestellten Ausführungsbeispieles näher erläutert. Es zeigen:

  • Figur 1 einen erfindungsgemäßen Röntgenstrahler und
  • Figur 2 einen Schnitt gemäß der Linie II-II in Figur 1.
The invention is explained below with reference to an embodiment shown in the drawing. Show it:
  • 1 shows an X-ray emitter according to the invention and
  • Figure 2 shows a section along the line II-II in Figure 1.

In der Figur 1 ist ein Röntgenstrahler mit einem ölgefüllten Gehäuse dargestellt, das aus einer Wanne 1 und einem Montage­ kopf 2 besteht. Über den Montagekopf 2 ist eine Haube 3 ge­stülpt. In dem ölgefüllten Gehäuse des Röntgenstrahlers ist ei­ne Röntgenröhre 4, eine Platine 5 mit Gleichrichtern und Hoch­spannungskondensatoren, zwei Hochspannungstransformatoren 6 und 7 und ein Heiztransformator 8 angeordnet.1 shows an X-ray emitter with an oil-filled housing, which consists of a trough 1 and an assembly head 2 exists. 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.

In der Mitte des Montagekopfes 2 ist ein Strahlenaustrittsfen­ster 9 angeordnet. An dem Montagekopf 2 ist durch in dieser Fi­gur nicht dargestellte Haltemittel 26 bis 28 ein Röhrenträger 10 für die Röntgenröhre 4 angebracht, der zweiteilig ausgeführt ist. An dem oberen Teil 11 des Röhrenträgers 10 ist die Röntgen­röhre 4 mit ihrem Fuß befestigt, an dem asymmetrisch ein Kühl­körper 13 angebracht ist. Im Bereich dieses Kühlkörpers 13 ist der obere Teil 11 des Röhrenträgers 10 mit einer Öffnung 14 ver­sehen. Um diese Öffnung 14 herum ist der Röhrenträger 10 nach oben gebogen, so daß die Öffnung 14 in einen Wärmetauscher 15 ragt, der als zum Montagekopf 2 gehörender Höcker ausgebildet ist. Der Wärmetauscher 15 ist mit Kühlrippen 16 versehen.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 to the upper part 11 of the tube carrier 10 with its foot, to which a heat sink 13 is attached asymmetrically. In the area of this heat sink 13, the upper part 11 of the tube support 10 is provided with an opening 14. Around this 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.

Der untere Teil 12 des Röhrenträgers 10 umgreift nur die eigent­liche Röntgenröhre 4 und nicht den Kühlkörper 13, so daß bei Be­trieb der Röntgenröhre 4 sich der Kühlkörper 13 erwärmt und auf­grund der Schwerkraft eine Strömung des Öles als Kühlmittel nach oben bewirkt, wobei es bei der in Figur 1 dargestellten Stellung des Röntgenstrahlers direkt in den Wärmetauscher 15 gelangt, wo es abgekühlt werden kann. Aufgrund der Schwerkraft fällt an­schließend das abgekühlte Öl nach unten und kann dann wieder aufsteigen. Dieser schwerkraftbedingte Kühlmittelkreislauf wird noch durch die Trennwand 17 unterstützt, die ein Teil eines Bau­teilträgers 19 bildet.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 passes 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 further supported by the partition wall 17, which forms part of a component carrier 19.

Im Bereich des gegenüber dem Kühlkörper 13 abgewandten Endes der Röntgenröhre 4 weist der untere Teil 12 des Röhrenträgers 10 ebenfalls eine Öffnung 20 auf. Weiterhin ist zwischen den beiden Teilen 11 und 12 ein Spalt gelassen, so daß auch hier­durch das Kühlmittel treten kann. Auch in diesem Bereich ist der Bauteilträger 19 mit einer senkrecht angeordneten Trennwand 18 versehen, die auch hier einen Wärmekreislauf unterstützt.In the region of the end of the X-ray tube 4 facing away from the heat sink 13, 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. Also in this area the component carrier 19 is provided with a vertically arranged partition wall 18 which also supports a heat cycle.

Der Röhrenträger 10 weist, wie aus Figur 2 ersichtlich, ein rechteckförmiges Profil auf, damit in diesem Röhrenträger 10 möglichst viel Öl durchtreten und somit die Röntgenröhre 4 küh­len kann. Aufgrund des elektrischen Feldes entsteht eine zweite Strömung in Längsrichtung der Röntgenröhre 4 und des Röhrenträ­gers 10, so daß eine Kühlung der Röntgenröhre 4 nicht nur über den Kühlkörper 13 sondern auch über den Röhrenkolben erfolgt. Auch wird dadurch eine Zirkulation und ein Austausch des Kühl­mittels erreicht, so daß auch das am Kopf der Röntgenröhre 4 erwärmte Kühlmittel an den Wärmetauscher 15 gelangen kann.As can be seen from FIG. 2, 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 bulb. 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.

An dem Bauteilträger 19 ist an der dem Montagekopf 2 abgewand­ten Seite des Röhrenträgers 10 die Leiterplatte 5 angebracht, auf der in Figur 2 dargestellte Hochspannungskondensatoren 34 und nicht dargestellte Gleichrichter angeordnet sind. Unterhalb der Leiterplatte 5 sind dann die Hochspannungstransformatoren 6 und 7 sowie der Heiztransformator 8 angeordnet. Damit die Hoch­spannungstransformatoren 6 und 7 möglichst verlustfrei arbeiten und nur geringe Wärme erzeugen, bestehen ihre Kerne 35 aus amor­phem Metall, wie beispielsweise Vitrovac.The circuit board 5, on which the high-voltage capacitors 34 shown in FIG. 2 and rectifiers (not shown) are arranged, is attached to the component carrier 19 on the side of the tube carrier 10 facing away from the mounting head 2. The high-voltage transformers 6 and 7 and the heating transformer 8 are then arranged below the printed circuit board 5. So that the high-voltage transformers 6 and 7 work as loss-free as possible and generate only little heat, their cores 35 are made of amorphous metal, such as Vitrovac.

Zur Durchführung der elektrischen Anschlüsse ist der Wärmetau­scher 15 mit einer Öffnung 21 versehen, die durch eine Platine 22 abgedeckt ist. Die Spannungszufuhr wird durch Kontaktstifte 23 erreicht, die durch die Platine 22 hindurchgeführt sind. Die Platine 22 kann dabei, wie auch die Leiterplatte 5, in der so­genannten SIL-Technik erstellt sein. Hierbei wird ein Formteil aus Kunststoff erstellt, das anschließend mit einer die Lötkon­takte und Bahnen bildenden Schicht aus Leitmaterial beschichtet wird. Durch diesen speziellen Aufbau wird erreicht, daß die Kon­taktdurchführung öldicht ist.To carry out the electrical connections, the heat exchanger 15 is provided with an opening 21 which is covered by a circuit board 22. The voltage supply is 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. Here, 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.

Der Montagekopf 2 des Röntgenstrahlers weist an seiner dem Wär­ metauscher 15 gegenüberliegenden Seite ebenfalls einen Höcker 24 auf, der zur Aufnahme einer Druckausgleichsmembran dient.The mounting head 2 of the X-ray emitter has the heat on it Metauscher 15 opposite side also on a hump 24, which serves to accommodate a pressure compensation membrane.

Die Wanne 1 und der Montagekopf 2 des Röntgenstrahlers sind durch die Haube 3 abgedeckt, die die Wanne 1 seitlich über­greift. Zur Halterung ist auf der einen Schmalseite die Haube 2 mit einer Nase 25 versehen, die in eine Nut eingreift. Diese Nut kann entweder in der Wanne 1 vorgesehen sein, oder, wie in Figur 1 dargestellt, zwischen Wanne 1 und Montagekopf 2 ausge­bildet sein. Auf der anderen Schmalseite greift die Haube 3 über den Wärmetauscher 15 und ist dort mit ihm mittels Schrau­ben verbunden.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. To hold the hood 2 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. On the other narrow side, the hood 3 reaches over the heat exchanger 15 and is connected to it there by means of screws.

Auf dieser Seite weisen Wanne 1 und Haube 3 Aussparungen und Auflageflächen auf, in die ein Tragarm für den Röntgenstrahler, beispielsweise ein C-Bogen, eingreifen kann, der den Bereich des Wärmetauschers 15 mit dem Röntgenstrahler verbindet. Da­durch wird eine weitere Wärmeabfuhr des Wärmetauschers 15 über den Tragarm erreicht.On this side, the trough 1 and the hood 3 have cutouts and support surfaces 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.

In der Figur 2 ist ein Schnitt gemäß der Linie II-II durch den Röntgenstrahler dargestellt. Hierbei ist ersichtlich, daß der Röhrenträger 10 über verstellbare Haltemittel 26 bis 28 mit dem Montagekopf 2 verbunden ist. Die Haltemittel bestehen aus Schrau­ben 26, die mit ihrem Gewindeteil in an dem Röhrenträger 10 an­gebrachte Gewinde eingreifen. Über Vorsprünge stützen sich die Schrauben 26 an dem Montagekopf 2 ab. Die andere Seite der Schrau­be 26 ist ebenfalls mit einem Gewinde versehen, auf das eine Si­cherungsmutter 27 geschraubt ist. Dichtringe 28 bewirken, daß die Durchführung für die Schrauben 26 öldicht gehalten sind. Durch Verstellen der Schrauben 26 kann somit der Röhrenträger 10 und somit die Röntgenröhre 4 in ihrer Höhe eingestellt, ano­den- bzw. kathodenseitig gekippt und um ihre Achse gedreht wer­den, da die Schrauben 26 in ihrer Höhe fest mit dem Montagekopf 2 verbunden sind.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. By adjusting the screws 26, the tube support 10 and thus the X-ray tube 4 can thus be adjusted in height, tilted on the anode or cathode side and rotated about their axis, since the height of the screws 26 is firmly connected to the mounting head 2.

Der Röhrenträger 10 weist, wie aus Figur 2 ersichtlich ist, ei­nen im wesentlichen rechteckförmigen Querschnitt auf. Er kann beispielsweise aus Kunststoff erstellt sein. Zur Reduzierung der Röntgenstrahlung ist er mit Bleiblechen 29 versehen, die beispielsweise in an dem Röhrenträger 10 angebrachte Schlitze eingreifen und von diesem gehalten werden.As can be seen from FIG. 2, 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.

Zwischen den Seitenwänden von Wanne 1 und Montagekopf 2 ist ein Dichtmittel, beispielsweise ein O-Dichtring 32, eingeführt, der durch den Preßdruck der Wände in radialer Richtung und den An­preßdruck des Montagekopfes 2 in vertikaler Richtung gehalten wird und eine Dichtung bewirkt. Der Montagekopf 2 ist dabei in axialer Richtung verschraubt, so daß der Anpreßdruck des O-­Dichtringes 32 bei allen Röntgenstrahlern immer gleich ist.Between the side walls of tub 1 and mounting head 2, a sealant, for example an O-ring 32, is introduced, which is held by the pressure of the walls in the radial direction and the contact pressure of the mounting head 2 in the vertical direction and causes a seal. The mounting head 2 is screwed in the axial direction so that the contact pressure of the O-ring 32 is always the same for all X-ray emitters.

Als O-Dichtring 32 kann ein Gummidichtring Verwendung finden, der derart vorgeformt ist, daß er der rechteckförmigen Form des Röntgenstrahlers angepaßt ist, so daß in seinen Kantenbereichen keine oder nur eine geringe Dehnung und somit nahezu keine Ein­schnürung erfolgt.A rubber sealing ring can be used as the O-sealing ring 32, which is pre-shaped 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.

Durch den Röhrenträger 10 und beispielsweise vier an dem Röh­renträger 10 angreifende Schrauben 26 läßt sich die Röntgenröh­re 4 einmal in ihrer Höhe verstellen, so daß sich die Breite des Röntgenstrahlenbündels einstellen läßt. Weiterhin kann durch Verstellen von jeweils zwei Schrauben 26 die Röntgenröhre 4 in Richtung ihrer Längsachse oder quer dazu verstellt werden. Dadurch, daß der Röhrenträger 10 aus Kunststoff erstellt ist, läßt sich auch durch Verstellen nur einer Schraube 26 dieser verwinden, so daß auch diagonale Verstellungen der Röntgenröhre 4 möglich sind.The height of the x-ray tube 4 can be adjusted once by the tube support 10 and, for example, four screws 26 engaging the tube support 10, so that the width of the x-ray beam can be adjusted. Furthermore, the x-ray tube 4 can be adjusted in the direction of its longitudinal axis or transversely thereto by adjusting two screws 26 each. The fact that the tube support 10 is made of plastic can be twisted by adjusting only one screw 26, so that diagonal adjustments of the X-ray tube 4 are also possible.

Durch diese erfindungsgemäße Ausbildung des Röntgenstrahlers kann dessen Röntgenröhre 4 auch im zusammengebauten Zustand eingestellt und justiert werden, so daß sich der Aufwand des Zusammenbaues vereinfacht.This inventive design of the X-ray emitter allows the X-ray tube 4 to be adjusted and adjusted even in the assembled state, so that the assembly effort is simplified.

Claims (4)

1. Röntgenstrahler mit einer Röntgenröhre (4), die in einem mit Kühlmittel gefüllten Gehäuse (1 bis 3) angeordnet ist, das eine Wanne (1) und einen Montagekopf (2) aufweist, dadurch gekennzeichnet, daß die Röntgenröhre (4) von einem Röhrenträger (10) gehalten wird, der durch Haltemittel (26 bis 28) verstellbar mit dem Gehäuse (1 bis 3) verbunden ist.1. X-ray tube with an X-ray tube (4), which is arranged in a coolant-filled housing (1 to 3), which has a trough (1) and a mounting head (2), characterized in that the X-ray tube (4) by one Tube support (10) is held, which is connected to the housing (1 to 3) so as to be adjustable by holding means (26 to 28). 2. Röntgenstrahler nach Anspruch 1, dadurch ge­kennzeichnet, daß die verstellbaren Haltemittel (26 bis 28) aus drehbar an dem Montagekopf (2) befestigten Schrauben (26) bestehen, die in an dem Röhrenträger (10) an­gebrachte Gewinde eingreifen.2. X-ray emitter according to Claim 1, characterized in that the adjustable holding means (26 to 28) consist of screws (26) which are rotatably fastened to the mounting head (2) and which engage in threads on the tube support (10). 3. Röntgenstrahler nach Anspruch 2, dadurch ge­kennzeichnet, daß die Schrauben (26) ein Gewin­deteil aufweisen, das in das am Röhrenträger (10) befestigte Ge­winde eingreift, daß die Schrauben (26) eine Verdickung aufwei­sen, das in eine am Montagekopf (2) angebrachte Bohrung ein­greift und sich am Montagekopf (2) abstützt, und daß die Schrau­ben (26) auf der anderen Seite ebenfalls mit einem Gewinde ver­sehen sind, auf das eine Sicherungsmutter (27) geschraubt ist, die sich an dem Montagekopf (2) abstützt.3. X-ray emitter according to claim 2, characterized in that the screws (26) have a threaded part which engages in the thread attached to the tube support (10), that the screws (26) have a thickening which in a on the mounting head (2) engages bore and is supported on the mounting head (2), and that the screws (26) on the other side are also provided with a thread on which a lock nut (27) is screwed, which is supported on the mounting head (2). 4. Röntgenstrahler nach einem der Ansprüche 1 bis 3, da­durch gekennzeichnet, daß die Durch­führung durch den Montagekopf (2) für die Haltemittel (26 bis 28) mit einer Dichtung (28) versehen ist.4. X-ray emitter according to one of claims 1 to 3, characterized in that the implementation through the mounting head (2) for the holding means (26 to 28) is provided with a seal (28).
EP89120807A 1989-11-09 1989-11-09 X-ray emitter Expired - Lifetime EP0426897B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE89120807T DE58905921D1 (en) 1989-11-09 1989-11-09 X-ray tube.
EP89120807A EP0426897B1 (en) 1989-11-09 1989-11-09 X-ray emitter
US07/606,919 US5067146A (en) 1989-11-09 1990-10-31 X-ray radiator
JP1990116152U JP2515890Y2 (en) 1989-11-09 1990-11-05 X-ray source

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP89120807A EP0426897B1 (en) 1989-11-09 1989-11-09 X-ray emitter

Publications (2)

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EP0426897A1 true EP0426897A1 (en) 1991-05-15
EP0426897B1 EP0426897B1 (en) 1993-10-13

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EP89120807A Expired - Lifetime EP0426897B1 (en) 1989-11-09 1989-11-09 X-ray emitter

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US (1) US5067146A (en)
EP (1) EP0426897B1 (en)
JP (1) JP2515890Y2 (en)
DE (1) DE58905921D1 (en)

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AU2002363962A1 (en) * 2001-12-04 2003-06-17 X-Ray Optical Systems, Inc. X-ray source assembly having enhanced output stability, and fluid stream analysis applications thereof
US7382856B2 (en) * 2001-12-04 2008-06-03 X-Ray Optical Systems, Inc. X-ray source assembly having enhanced output stability, and fluid stream analysis applications thereof
WO2005018289A2 (en) * 2003-08-04 2005-02-24 X-Ray Optical Systems, Inc. X-ray source assembly having enhanced output stability using tube power adjustments and remote calibration
JP4163224B2 (en) * 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 Volume change absorber, X-ray generator, and X-ray imaging apparatus
JP4431186B1 (en) * 2008-10-20 2010-03-10 啓史郎 上中 Fake bait
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DE19824008C2 (en) * 1998-05-29 2000-04-13 Juergen Ziehm X-ray tube

Also Published As

Publication number Publication date
DE58905921D1 (en) 1993-11-18
JPH0377400U (en) 1991-08-02
EP0426897B1 (en) 1993-10-13
JP2515890Y2 (en) 1996-10-30
US5067146A (en) 1991-11-19

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