EP0597366B1 - Elektron tube - Google Patents

Elektron tube Download PDF

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Publication number
EP0597366B1
EP0597366B1 EP93117765A EP93117765A EP0597366B1 EP 0597366 B1 EP0597366 B1 EP 0597366B1 EP 93117765 A EP93117765 A EP 93117765A EP 93117765 A EP93117765 A EP 93117765A EP 0597366 B1 EP0597366 B1 EP 0597366B1
Authority
EP
European Patent Office
Prior art keywords
wall part
electron
wall
tube according
electron 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
EP93117765A
Other languages
German (de)
French (fr)
Other versions
EP0597366A1 (en
Inventor
Gerd Fischer
Ernst Bödege
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of EP0597366A1 publication Critical patent/EP0597366A1/en
Application granted granted Critical
Publication of EP0597366B1 publication Critical patent/EP0597366B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
    • H01J23/12—Vessels; Containers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • H01J19/54—Vessels; Containers; Shields associated therewith
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
    • H01J23/005—Cooling methods or arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
    • H01J23/02—Electrodes; Magnetic control means; Screens
    • H01J23/027—Collectors

Definitions

  • the invention relates to an electron tube according to the preamble of claim 1, in particular an electron beam tube such as a traveling wave tube.
  • the electron beam is collected in an electron collector after passing through an interaction area, the energy inherent in the beam electrons being obtained as heat loss in the electron collector, which is also called the collector.
  • the electron collector frequently consists of a plurality of perforated diaphragm-shaped electrodes of different potentials one behind the other in the beam direction and one of the vacuum spaces Bottom part of the tube, which usually heats up considerably.
  • an electron beam receiver for runtime tubes which has a plurality of electrodes arranged one behind the other in the direction of the electron beam axis and which are surrounded by a common metallic outer shell.
  • a common metallic outer shell Arranged between the electrodes and the outer shell are elongate insulating parts which run in the axial direction and are pressed radially onto the outer shell and the electrodes by shrinking on the outer shell.
  • the outer shell can simultaneously form the vacuum shell of the electron beam interceptor.
  • an electron beam receiver is also known, the only collecting electrode of which is surrounded by a cylindrical metallic outer shell. Electrode and outer shell are spaced radially from one another by an insulator arrangement. The outer shell is sealed in a vacuum-tight manner at the end.
  • the present invention has for its object to provide an electron tube with a thermally strong electron collector.
  • FIG. 1 shows a section of a cross section through an electron collector of a traveling wave tube with a cylindrical wall part 1 and a base part 2, which is double-walled according to the invention. It consists of the two parts 3 and 4, which form an intermediate space 5.
  • the vacuum envelope is formed by the cylindrical part 1 and the outer wall part 4 of the base part 2, so that there is a vacuum in the intermediate space 5 as well as within the remaining tube 7.
  • the additional wall part 3 of the bottom part 3 has one or more openings 6 for the purpose of pressure exchange, which are arranged in the wall part 3 so that at most a small part of the incoming high-energy electrons 9 can reach the outer wall part 4 through the openings 6 .
  • the advantage achieved thereby is that no strong, selective heating of the outer wall part 4 can occur, so that this component 4 forming the vacuum seal is not subjected to excessive thermal stress.
  • the wall part 3, which is completely in a vacuum can, as it turns out, be subjected to greater thermal loads without damage. It gives off its heat over a large area to the adjacent wall parts of the vacuum housing.
  • FIG. 2 has a plurality of electrode parts 23, 24, 28 fastened in a ceramic tube 21.
  • the bottom part 22 form the two wall parts 23 and 24, of which in turn the outer wall part 24 forms part of the vacuum housing.
  • the inner wall part 23 is provided in the direction of the incoming electrons 9.
  • one or more openings 26 are again provided in the wall part 23, e.g. are so inclined in the wall part 23 that no or only a few high-energy electrons can reach the outer wall part 24 of the double-walled bottom part 22.
  • the outer wall parts 4 and 24 are expediently made thin-walled than the inner wall parts 3 and 23, the inner wall parts expediently having a wall thickness 2 to 4 times thicker than the outer wall parts 4 and 24.

Description

Die Erfindung betrifft eine Elektronenröhre nach dem Oberbegriff des Patentanspruchs 1, insbesondere eine Elektronenstrahlröhre wie eine Wanderfeldröhre.The invention relates to an electron tube according to the preamble of claim 1, in particular an electron beam tube such as a traveling wave tube.

Bei Elektronenstrahlröhren wie z.B. Wanderfeldröhren wird der Elektronenstrahl in einem Elektronenauffänger nach Durchlaufen eines Wechselwirkungsbereiches aufgefangen, wobei die in den Strahlelektronen innewohnende Energie als Verlustwärme im Elektronenauffänger, der auch Kollektor genannt wird, anfällt. Der Elektronenauffänger besteht häufig aus mehreren in Strahlrichtung hintereinanderliegenden lochblendenförmigen Elektroden unterschiedlichen Potentials und einem den Vakuumraum der Röhre abschließenden Bodenteil, das sich üblicherweise stark erwärmt. Um die Verlustwärme stärker auf davorliegende Wandungsteile der Elektronenauffänger zu verteilen, ist es wie bereits gesagt bekannt, mehrere Stufen vorzusehen oder aber das Bodenteil mit einem den Strahl aufspreizenden Spike zu versehen.In electron beam tubes such as traveling wave tubes, the electron beam is collected in an electron collector after passing through an interaction area, the energy inherent in the beam electrons being obtained as heat loss in the electron collector, which is also called the collector. The electron collector frequently consists of a plurality of perforated diaphragm-shaped electrodes of different potentials one behind the other in the beam direction and one of the vacuum spaces Bottom part of the tube, which usually heats up considerably. In order to distribute the heat loss more strongly on the wall parts of the electron collector in front of it, it is known, as already mentioned, to provide several stages or to provide the base part with a spike that spreads the beam.

Aus der EP-A- 0 259 606 ist ein Elektronenstrahlauffänger für Laufzeitröhren bekannt, der mehrere in Richtung der Elektronenstrahlachse hintereinander angeordnete Elektroden aufweist, die von einer gemeinsamen metallischen Außenhülle umgeben sind. Zwischen den Elektroden und der Außenhülle sind in axialer Richtung verlaufende längliche Isolierteile angeordnet, die durch Aufschrumpfen der Außenhülle radial an die Außenhülle und an die Elektroden angepreßt sind. Die Außenhülle kann gleichzeitig die Vakuumhülle des Elektronenstrahlauffängers bilden.From EP-A-0 259 606 an electron beam receiver for runtime tubes is known which has a plurality of electrodes arranged one behind the other in the direction of the electron beam axis and which are surrounded by a common metallic outer shell. Arranged between the electrodes and the outer shell are elongate insulating parts which run in the axial direction and are pressed radially onto the outer shell and the electrodes by shrinking on the outer shell. The outer shell can simultaneously form the vacuum shell of the electron beam interceptor.

Aus der US-A- 3,626,230 ist ebenfalls ein Elektronenstrahlauffänger bekannt, dessen einzige Auffangelektrode von einer zylindrischen metallischen Außenhülle umgeben ist. Elektrode und Außenhülle sind durch eine Isolatoranordnung radial voneinander beabstandet. Die Außenhülle ist durch einen Deckel am Ende vakuumdicht abgeschlossen.From US-A-3,626,230 an electron beam receiver is also known, the only collecting electrode of which is surrounded by a cylindrical metallic outer shell. Electrode and outer shell are spaced radially from one another by an insulator arrangement. The outer shell is sealed in a vacuum-tight manner at the end.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Elektronenröhre mit einem thermisch stark belastbaren Elektronenauffänger anzugeben.The present invention has for its object to provide an electron tube with a thermally strong electron collector.

Diese Aufgabe wird durch das im Kennzeichen des Patentanspruchs 1 angegebene Merkmal gelöst. Fortschrittliche Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen.This object is achieved by the feature specified in the characterizing part of patent claim 1. Advanced developments of the invention result from the subclaims.

Anhand der in den Figuren 1 und 2 schematisch dargestellten Ausführungsbeispiele wird die Erfindung nachfolgend näher erläutert.The invention is explained in more detail below with reference to the exemplary embodiments shown schematically in FIGS. 1 and 2.

Die Figur 1 zeigt ausschnittsweise einen Querschnitt durch einen Elektronenauffänger einer Wanderfeldröhre mit einem zylindrischen Wandungsteil 1 und einem Bodenteil 2, das gemäß der Erfindung doppelwandig ausgebildet ist. Es besteht aus den beiden Teilen 3 und 4, die einen Zwischenraum 5 bilden. Die Vakuumhülle wird von dem zylindrischen Teil 1 und dem äußeren Wandungsteil 4 des Bodenteils 2 gebildet, so daß in dem Zwischenraum 5 ebenso wie innerhalb der übrigen Röhre 7 ein Vakuum herrscht.1 shows a section of a cross section through an electron collector of a traveling wave tube with a cylindrical wall part 1 and a base part 2, which is double-walled according to the invention. It consists of the two parts 3 and 4, which form an intermediate space 5. The vacuum envelope is formed by the cylindrical part 1 and the outer wall part 4 of the base part 2, so that there is a vacuum in the intermediate space 5 as well as within the remaining tube 7.

Das zusätzliche Wandungsteil 3 des Bodenteils 3 weist zum Zwecke des Druckaustauschs eine oder mehrere Öffnungen 6 auf, die so in dem Wandungsteil 3 angeordnet sind, daß höchstens ein geringer Teil der ankommenden energiereichen Elektronen 9 durch die Öffnungen 6 hindurch auf das äußere Wandungsteil 4 gelangen können. Der dadurch erzielte Vorteil besteht darin, daß keine stärkere, punktuelle Erhitzungen des äußeren Wandungsteils 4 auftreten können, so daß dieses, den Vakuumabschluß bildende Bauteil 4 thermisch nicht zu stark belastet wird. Das Wandungsteil 3, das sich vollständig im Vakuum befindet, kann, wie sich herausstellt ohne Schäden thermisch stärker belastet werden. Es gibt seine Wärme großflächig an die angrenzenden Wandungsteile des Vakuumgehäuses ab.The additional wall part 3 of the bottom part 3 has one or more openings 6 for the purpose of pressure exchange, which are arranged in the wall part 3 so that at most a small part of the incoming high-energy electrons 9 can reach the outer wall part 4 through the openings 6 . The advantage achieved thereby is that no strong, selective heating of the outer wall part 4 can occur, so that this component 4 forming the vacuum seal is not subjected to excessive thermal stress. The wall part 3, which is completely in a vacuum, can, as it turns out, be subjected to greater thermal loads without damage. It gives off its heat over a large area to the adjacent wall parts of the vacuum housing.

Die in Figur 2 gezeigte Ausführungsform weist mehrere Elektrodenteile 23, 24, 28 in einem Keramikrohr 21 befestigt auf. Das Bodenteil 22 bilden die beiden Wandungsteile 23 und 24, wovon wiederum das äußere Wandungsteil 24 einen Teil des Vakuumgehäuses bildet. In Richtung der ankommenden Elektronen 9, davorliegend ist erfindungsgemäß das innere Wandungsteil 23 vorgesehen. Zwischen den Wandungsteilen 23 und 24 befindet sich wiederum ein Zwischenraum 25, in dem das Vakuum des Röhreninneren 27 herrscht, wozu in dem Wandungsteil 23 wiederum eine oder mehrere Öffnungen 26 vorgesehen sind, die z.B. so schräg in das Wandungsteil 23 eingebracht sind, daß keine oder nur wenige energiereiche Elektronen auf das äußere Wandungsteil 24 des doppelwandigen Bodenteils 22 gelangen können.The embodiment shown in FIG. 2 has a plurality of electrode parts 23, 24, 28 fastened in a ceramic tube 21. The bottom part 22 form the two wall parts 23 and 24, of which in turn the outer wall part 24 forms part of the vacuum housing. In accordance with the invention, the inner wall part 23 is provided in the direction of the incoming electrons 9. Between the wall parts 23 and 24 there is again an intermediate space 25 in which the vacuum of the tube interior 27 prevails, for which purpose one or more openings 26 are again provided in the wall part 23, e.g. are so inclined in the wall part 23 that no or only a few high-energy electrons can reach the outer wall part 24 of the double-walled bottom part 22.

Die äußeren Wandungsteile 4 und 24 sind zweckmäßig dünnwandiger ausgeführt als die inneren Wandungsteile 3 und 23, wobei die inneren Wandungsteile zweckmäßig eine 2 bis 4 mal dickere Wandstärke aufweisen als die äußeren Wandungsteile 4 und 24.The outer wall parts 4 and 24 are expediently made thin-walled than the inner wall parts 3 and 23, the inner wall parts expediently having a wall thickness 2 to 4 times thicker than the outer wall parts 4 and 24.

Claims (7)

  1. Electron tube with an electron capturing device with an inner wall part (3, 23) and an outer wall part (4, 24), which forms a part of the vacuum casing of the tube, wherein inner and outer wall part are thermally conductively connected, characterised thereby that inner and outer wall part lie at a common electrical potential.
  2. Electron tube according to claim 1, characterised thereby that the intermediate space between the wall parts stands in communication with the vacuum space by way of openings in the inner wall part.
  3. Electron tube according to claim 2, characterised thereby that the openings in the inner wall part are so constructed and arranged that no substantial proportion of energy-rich electrons gets into the intermediate space between the two wall parts.
  4. Electron tube according to one of claims 1 to 3, characterised by the construction as travelling wave tube.
  5. Electron tube according to one of claims 1 to 4, characterised thereby that the two metallic wall parts form the last stage of a multistage electron capturing device.
  6. Electron tube according to one of claims 1 to 5, characterised thereby that the outer wall part is constructed to be more thinly walled than the inner wall part.
  7. Electron tube according to one of claims 1 to 6, characterised thereby that the two metallic wall parts form the base part of a pot-shaped electron capturing device.
EP93117765A 1992-11-12 1993-11-03 Elektron tube Expired - Lifetime EP0597366B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4238165 1992-11-12
DE4238165A DE4238165A1 (en) 1992-11-12 1992-11-12 Electron tube

Publications (2)

Publication Number Publication Date
EP0597366A1 EP0597366A1 (en) 1994-05-18
EP0597366B1 true EP0597366B1 (en) 1996-09-11

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ID=6472690

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Application Number Title Priority Date Filing Date
EP93117765A Expired - Lifetime EP0597366B1 (en) 1992-11-12 1993-11-03 Elektron tube

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EP (1) EP0597366B1 (en)
DE (2) DE4238165A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105762048B (en) * 2016-04-06 2018-03-02 中国电子科技集团公司第十二研究所 Interior collector and collector and travelling-wave tubes including the interior collector

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1098620B (en) * 1958-07-23 1961-02-02 Siemens Ag Anode for high-performance tubes or catcher for electron beams
US3626230A (en) * 1969-10-02 1971-12-07 Varian Associates Thermally conductive electrical insulator for electron beam collectors
DE2636913C2 (en) * 1976-08-17 1985-06-05 Siemens AG, 1000 Berlin und 8000 München Radiation-cooled multi-stage collector
JPS56102043A (en) * 1980-01-17 1981-08-15 Nec Corp High frequency electronic tube
US4840595A (en) * 1986-08-29 1989-06-20 Siemens Aktiengesellschaft Electron beam catcher for velocity modulated electron tubes
DE3913538C2 (en) * 1989-04-25 1996-11-21 Licentia Gmbh Electron collector for an electron beam tube

Also Published As

Publication number Publication date
DE59303742D1 (en) 1996-10-17
DE4238165A1 (en) 1994-05-19
EP0597366A1 (en) 1994-05-18

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