EP0597366A1 - Elektron tube - Google Patents

Elektron tube Download PDF

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Publication number
EP0597366A1
EP0597366A1 EP93117765A EP93117765A EP0597366A1 EP 0597366 A1 EP0597366 A1 EP 0597366A1 EP 93117765 A EP93117765 A EP 93117765A EP 93117765 A EP93117765 A EP 93117765A EP 0597366 A1 EP0597366 A1 EP 0597366A1
Authority
EP
European Patent Office
Prior art keywords
wall part
electron
tube according
electron tube
wall
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
EP93117765A
Other languages
German (de)
French (fr)
Other versions
EP0597366B1 (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
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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 often consists of a plurality of perforated diaphragm-shaped electrodes of different potentials one behind the other in the beam direction and a bottom part which closes the vacuum space of the tube and which usually heats up considerably.
  • it is known, as already mentioned, to provide several stages or to provide the base part with a spike that spreads the beam.
  • the present invention is based on the object of effectively reducing the thermal load on the component of the electron collector of an electron tube which forms part of the vacuum housing of the tube.
  • 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 bottom 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 provided in the wall part 23, which 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 thinner 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.

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  • Microwave Tubes (AREA)

Abstract

In order to improve the thermal conditions in the region of the collector of an electron tube, it is proposed to design the bottom part of the collector with two walls. <IMAGE>

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, daß 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.For electron beam tubes such as Traveling field 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 often consists of a plurality of perforated diaphragm-shaped electrodes of different potentials one behind the other in the beam direction and a bottom part which closes the vacuum space of the tube and 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.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, die thermische Belastung des einen Teil des Vakuumgehäuses der Röhre bildenden Bauteils des Elektronenauffängers einer Elektronenröhre wirkungsvoll zu verringern.The present invention is based on the object of effectively reducing the thermal load on the component of the electron collector of an electron tube which forms part of the vacuum housing of the tube.

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 bis 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 to 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 bottom 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 provided in the wall part 23, which 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 thinner 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 (8)

1. Elektronenröhre mit einem Elektronenauffänger und mit einem metallischen Wandungsteil, das einen Teil der Vakuumhülle der Röhre bildet, dadurch gekennzeichnet, daß das metalische Wandungsteil doppelwandig ausgebildet ist.1. Electron tube with an electron collector and with a metallic wall part which forms part of the vacuum envelope of the tube, characterized in that the metal wall part is double-walled. 2. Elektronenröhre nach Anspruch 1, dadurch gekennzeichnet, daß der Zwischenraum zwischen den Wandungsteilen mit dem Vakuumraum über Öffnungen im inneren Wandungsteil in Verbindung steht.2. Electron tube according to claim 1, characterized in that the space between the wall parts communicates with the vacuum space via openings in the inner wall part. 3. Elektronenröhre nach Anspruch 2, dadurch gekennzeichnet, daß die Öffnungen im inneren Wandungsteil so angeordnet und ausgebildet sind, daß kein wesentlicher Anteil energiereicher Elektronen des Elektronenstrahls in den Zwischenraum zwischen den beiden Wandungsteilen gelangt.3. Electron tube according to claim 2, characterized in that the openings in the inner wall part are arranged and designed so that no substantial proportion of high-energy electrons of the electron beam get into the space between the two wall parts. 4. Elektronenröhre nach einem der Ansprüche 1 bis 3, gekennzeichnet durch die Ausbildung als Wanderfeldröhre.4. Electron tube according to one of claims 1 to 3, characterized by the design as a traveling wave tube. 5. Elektronenröhre nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das metallische Wandungsteil die letzte Stufe eines mehrstufigen Elektronenauffängers ist.5. Electron tube according to one of claims 1 to 4, characterized in that the metallic wall part is the last stage of a multi-stage electron collector. 6. Elektronenröhre nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Wandungsteile auf gemeinsamen elektrischem Potential liegen und gut wärmeleitend miteinander verbunden sind.6. Electron tube according to one of claims 1 to 5, characterized in that the wall parts are at common electrical potential and are connected to one another with good thermal conductivity. 7. Elektronenröhre nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß das äußere Wandungsteil, dünnwandiger ausgebildet ist als das innere Wandungsteil.7. Electron tube according to one of claims 1 to 6, characterized in that the outer wall part is formed thinner than the inner wall part. 8. Elektronenröhre nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß das doppelwandige Wandungsteil das Bodenteil eines topfförmigen Elektronenauffängers ist.8. Electron tube according to one of claims 1 to 7, characterized in that the double-walled wall part is the bottom part of a cup-shaped electron collector.
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 true EP0597366A1 (en) 1994-05-18
EP0597366B1 EP0597366B1 (en) 1996-09-11

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EP93117765A Expired - Lifetime EP0597366B1 (en) 1992-11-12 1993-11-03 Elektron tube

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DE (2) DE4238165A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105762048A (en) * 2016-04-06 2016-07-13 中国电子科技集团公司第十二研究所 Internal collector, collector comprising internal collector, and traveling wave tube comprising collector

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3626230A (en) * 1969-10-02 1971-12-07 Varian Associates Thermally conductive electrical insulator for electron beam collectors
JPS56102043A (en) * 1980-01-17 1981-08-15 Nec Corp High frequency electronic tube
EP0259606A1 (en) * 1986-08-29 1988-03-16 Siemens Aktiengesellschaft Electron-beam collector or a transit-time tube

Family Cites Families (3)

* 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
DE2636913C2 (en) * 1976-08-17 1985-06-05 Siemens AG, 1000 Berlin und 8000 München Radiation-cooled multi-stage collector
DE3913538C2 (en) * 1989-04-25 1996-11-21 Licentia Gmbh Electron collector for an electron beam tube

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3626230A (en) * 1969-10-02 1971-12-07 Varian Associates Thermally conductive electrical insulator for electron beam collectors
JPS56102043A (en) * 1980-01-17 1981-08-15 Nec Corp High frequency electronic tube
EP0259606A1 (en) * 1986-08-29 1988-03-16 Siemens Aktiengesellschaft Electron-beam collector or a transit-time tube

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 5, no. 176 (E - 81)<848> 12 November 1981 (1981-11-12) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105762048A (en) * 2016-04-06 2016-07-13 中国电子科技集团公司第十二研究所 Internal collector, collector comprising internal collector, and traveling wave tube comprising collector

Also Published As

Publication number Publication date
EP0597366B1 (en) 1996-09-11
DE59303742D1 (en) 1996-10-17
DE4238165A1 (en) 1994-05-19

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