EP0020262B1 - Ensemble collecteur isolé pour tubes de puissance et tube comportant un tel collecteur - Google Patents

Ensemble collecteur isolé pour tubes de puissance et tube comportant un tel collecteur Download PDF

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Publication number
EP0020262B1
EP0020262B1 EP80400744A EP80400744A EP0020262B1 EP 0020262 B1 EP0020262 B1 EP 0020262B1 EP 80400744 A EP80400744 A EP 80400744A EP 80400744 A EP80400744 A EP 80400744A EP 0020262 B1 EP0020262 B1 EP 0020262B1
Authority
EP
European Patent Office
Prior art keywords
collector
fins
assembly
cylinder
respect
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
Application number
EP80400744A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0020262A1 (fr
Inventor
Bernard Delory
Gérard Euloge
Georges Fleury
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.)
Thales SA
Original Assignee
Thomson CSF SA
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 Thomson CSF SA filed Critical Thomson CSF SA
Publication of EP0020262A1 publication Critical patent/EP0020262A1/fr
Application granted granted Critical
Publication of EP0020262B1 publication Critical patent/EP0020262B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • H01J23/033—Collector cooling devices

Definitions

  • the subject of the invention is an insulated collector assembly and a tube fitted with such a collector.
  • a collector To increase the efficiency of electronic tubes and particularly of traveling wave tubes, electrons are collected at the end of their journey by an electrode, the collector brought to a potential between that of the cathode and ground (potential of the anode).
  • the collector is massive and has the shape of a cone dug in a metal cylinder, to distribute the temperature in the collector as well as possible.
  • it is difficult to braze the copper mass inside an insulating cylinder, this because of the differences in coefficient of thermal expansion between the metal and the insulator, in general copper and a ceramic.
  • the subject of the invention is an insulated collector for a power tube which makes it possible to solve this problem.
  • the collector is provided on its surface with flexible metal fins of elongated shape, obtained by machining, in the mass of the collector and along generatrices of the cylinder forming its outer surface, equidistant grooves.
  • the insulated collector according to the invention is of the type comprising an insulating sleeve and assembly means between the insulating sleeve and the metal part constituting the collecting electrode.
  • FIGS. 1 and 3 we can see the collector 1, made of solid copper for example, receiving the electrons of a beam generated by an assembly not shown. These electrons impact on the various parts of the interior surface of the collector which has the shape of a truncated cone of revolution.
  • This collector can be connected to a fixed potential by a connection 2.
  • the external collector surface carries elastic parts in the form of fins, an example of which will be seen below. These fins are brazed onto a thin copper tube 4 coaxial with the tube.
  • This thin cylinder 4 is itself brazed inside a tube 5 of insulating material, such as ceramic, surrounding the assembly and ensuring its isolation.
  • the ceramic tube 5 is itself surrounded by a tube 6 ensuring the cooling.
  • This last cylinder supports an insulating part 7 which supports the connection range 8, through which the connection 2 passes.
  • these grooves reproduce with a pitch of the order of 2 mm in both directions.
  • the assembly forms the fins inclined at an angle of the order of 45 ° on the axis, in one direction for the fins 30 and in the other for the fins 31.
  • the grooves have a depth of 3 mm and a width and 0.5 mm for example.
  • Figures 4 and 5 show in longitudinal couple and in cross section, how the fins deform when the collector temperature varies significantly, that is to say for example, when allowed to cool after operation, or during soldering and after cooling.
  • the coefficient of expansion of copper being stronger than that of ceramic, it contracts more quickly, and we see in dotted lines that the fins pivot in the plane of cross section, as well as in the transverse plane .
  • FIG. 6 there are, as shown in FIG. 2, fins 30 and 31 having different inclinations, a central cross section delimiting the border between the zone of the fins 30 and 31.
  • the inner cylinder 4 of copper has the advantage of distributing the heat more evenly on the one hand; on the other hand, the brazing of the grooved collector is more delicate than the brazing of a smooth cylinder.
  • the collector body is made of copper, since this metal has both a high thermal conductivity and a fairly high melting point.
  • this metal has both a high thermal conductivity and a fairly high melting point.
  • the expansion coefficient of the collector may be lower than that of the insulation; the same geometry could be preserved, except that: the angle of inclination of the grooves would be quite small at the start, just enough so that, during cooling, these grooves tilt in the same direction.
  • a copper crown must be brazed so that the grooves can be machined there.
  • the collector is made up of several isolated electrodes (collector with two or more stages).

Landscapes

  • Microwave Tubes (AREA)
EP80400744A 1979-05-31 1980-05-28 Ensemble collecteur isolé pour tubes de puissance et tube comportant un tel collecteur Expired EP0020262B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7913983 1979-05-31
FR7913983A FR2458140A1 (fr) 1979-05-31 1979-05-31 Ensemble collecteur isole pour tubes de puissance et tube comportant un tel collecteur

Publications (2)

Publication Number Publication Date
EP0020262A1 EP0020262A1 (fr) 1980-12-10
EP0020262B1 true EP0020262B1 (fr) 1984-02-15

Family

ID=9226104

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80400744A Expired EP0020262B1 (fr) 1979-05-31 1980-05-28 Ensemble collecteur isolé pour tubes de puissance et tube comportant un tel collecteur

Country Status (5)

Country Link
US (1) US4358707A (OSRAM)
EP (1) EP0020262B1 (OSRAM)
JP (1) JPS55161336A (OSRAM)
DE (1) DE3066564D1 (OSRAM)
FR (1) FR2458140A1 (OSRAM)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4504762A (en) * 1982-06-25 1985-03-12 Hughes Aircraft Company Buffer for an electron beam collector
JPS6059633A (ja) * 1983-09-09 1985-04-06 Nec Corp マイクロ波管
JPS61156154U (OSRAM) * 1985-03-20 1986-09-27
US5215748A (en) * 1990-10-22 1993-06-01 Mankovitz Roy J Topical preparation and method for suppression of skin eruptions caused herpes simplex virus
US5436525A (en) * 1992-12-03 1995-07-25 Litton Systems, Inc. Highly depressed, high thermal capacity, conduction cooled collector
US6411513B1 (en) * 1999-12-10 2002-06-25 Jacques Normand Bedard Compliant thermal interface devices and method of making the devices
US20040222744A1 (en) * 2002-11-21 2004-11-11 Communications & Power Industries, Inc., Vacuum tube electrode structure
RU2328052C1 (ru) * 2007-02-15 2008-06-27 Федеральное государственное унитарное предприятие "Научно-производственное предприятие "Исток" (ФГУП НПП "Исток") Коллектор электровакуумного прибора
CN115841934A (zh) * 2022-09-15 2023-03-24 中国电子科技集团公司第十二研究所 一种散热结构、回旋管收集极及高频系统

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1349152A (fr) * 1962-05-08 1964-01-17 Thomson Houston Comp Francaise Organe collecteur pour tubes à faisceau électronique de section annulaire
US3666980A (en) * 1970-10-20 1972-05-30 Varian Associates Depressable beam collector structure for electron tubes
US3746087A (en) * 1971-04-19 1973-07-17 Varian Associates Heat dissipation device
US3823772A (en) * 1972-12-08 1974-07-16 Varian Associates Electrical insulator assembly
US3824425A (en) * 1973-05-21 1974-07-16 Sperry Rand Corp Suppressor electrode for depressed electron beam collector
DE2355936C2 (de) * 1973-11-08 1975-09-25 Siemens Ag, 1000 Berlin Und 8000 Muenchen Elektronenstrahlauffänger für Laufzeitröhren und Verfahren zu seiner Herstellung
US4054811A (en) * 1975-04-09 1977-10-18 Siemens Aktiengesellschaft Electron beam collector

Also Published As

Publication number Publication date
FR2458140A1 (fr) 1980-12-26
US4358707A (en) 1982-11-09
EP0020262A1 (fr) 1980-12-10
FR2458140B1 (OSRAM) 1982-02-12
JPS55161336A (en) 1980-12-15
DE3066564D1 (en) 1984-03-22

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