EP0693767B1 - Device for vacuum-tight sealing of permanently vacuum-tight containers - Google Patents

Device for vacuum-tight sealing of permanently vacuum-tight containers Download PDF

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Publication number
EP0693767B1
EP0693767B1 EP95109961A EP95109961A EP0693767B1 EP 0693767 B1 EP0693767 B1 EP 0693767B1 EP 95109961 A EP95109961 A EP 95109961A EP 95109961 A EP95109961 A EP 95109961A EP 0693767 B1 EP0693767 B1 EP 0693767B1
Authority
EP
European Patent Office
Prior art keywords
vacuum
tight
containers
permanently
heating coil
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
EP95109961A
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German (de)
French (fr)
Other versions
EP0693767A1 (en
Inventor
Armin Blecker
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.)
Pfeiffer Vacuum GmbH
Original Assignee
Pfeiffer Vacuum 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 Pfeiffer Vacuum GmbH filed Critical Pfeiffer Vacuum GmbH
Publication of EP0693767A1 publication Critical patent/EP0693767A1/en
Application granted granted Critical
Publication of EP0693767B1 publication Critical patent/EP0693767B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/38—Exhausting, degassing, filling, or cleaning vessels
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/40—Closing vessels

Definitions

  • the invention relates to a device for vacuum-tight sealing permanently vacuum-thick containers e.g. Electron tubes according to the preamble of the claim.
  • Evacuation of permanently vacuum-tight containers such as Electron tubes are made by special Pump systems suitable for the respective production process.
  • Tubes with a glass coating are usually through glass tubes connected to the pump systems.
  • These glass tubes in the Technical term pump stems are called after the evacuation separated from the pump system by melting.
  • the part of the pump stem facing the tube remains Part of the tube base on which the internal components of the Tubes are mounted.
  • melting a device used as a melting unit referred to as.
  • This melting unit consists of several parts, which ever since assembled in the axial direction according to Fig. 1 are: (S. Urban, D .: Modern picture tube production with turbo-molecular pumps, Vacuum in practice (1991) No. 3 5.196-198)
  • An electron tube 1 is evacuated by a pump system 2.
  • the connection between the electron tube and the pump system is made via a tubular component 4, the pump stem.
  • the tube base 16 and the pump system 2 must be arranged close together.
  • the melting unit 5 This consists of a housing 6 with cover 8, various insulation elements 9, 10, 11 and the heating coil 6. To change the heating coil, the melting unit be dismantled. This is done axially Direction after loosening the screws 12.
  • the heating coil is a thermally highly stressed part and therefore subjected to great wear. This makes it a common one This component must be changed. For a series production the replacement of these components and other maintenance work. an essential factor in effort and time. A quick one and the rational course of this manufacturing process should be aimed for. As shown above, this is with the conventional construction only solved unsatisfactorily.
  • the invention has set itself the task of the melting unit to be constructed in such a way that in the context of series production Replacing the heating coil and other maintenance work can be done without great expenditure of time and money.
  • the claim 2 represents a further embodiment of the invention.
  • the invention is explained using the example of electron tubes, is not, however, due to the vacuum tight sealing of electron tubes limited, but refers to all containers, which are permanently sealed in a vacuum-tight manner by melting become.
  • the melting unit constructed so that it can no longer be dismantled in the axial direction must become. It consists of the housing 13, which the Heating coil 6 and the insulation elements in the axial direction includes. A component 14 of the housing 13 is laterally removable. With this component, the heating coil 6 and the insulation elements also removable without screwing have to be solved. By a locking element 15, for. Legs Spring, which released before removing the component 14 the entire melting unit is held together.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Resistance Heating (AREA)

Description

Die Erfindung betrifft eine Einrichtung zum vakuumdichten Verschließen dauerhaft vakuumdickten Behältern z.B. Elektronenröhren nach dem Oberbegriff des Patentanspruches.The invention relates to a device for vacuum-tight sealing permanently vacuum-thick containers e.g. Electron tubes according to the preamble of the claim.

Die Evakuierung von dauerhaft vakummdichten Behältern wie z.B. Elektronenröhren erfolgt durch speziell für den jeweiligen Produktionsprozess geeignete Pumpsysteme. Röhren mit Glasumhüllung werden in der Regel durch Glasrohre mit den Pumpsystemen verbunden. Diese Glasrohre, in der Fachsprache Pumpstengel genannt, werden nach der Evakuierung durch Abschmelzen vom Pumpsystem getrennt. Der der Röhre zugewandte Teil des Pumpstengels bleibt Bestandteil des Röhrenfußes, auf dem innere Bauteile der Röhre montiert sind. Für die Serienfertigung wird zum Abschmelzen eine Vorrichtung verwendet, welche als Abschmelzeinheit bezeichnet wird.Evacuation of permanently vacuum-tight containers such as Electron tubes are made by special Pump systems suitable for the respective production process. Tubes with a glass coating are usually through glass tubes connected to the pump systems. These glass tubes in the Technical term pump stems are called after the evacuation separated from the pump system by melting. The part of the pump stem facing the tube remains Part of the tube base on which the internal components of the Tubes are mounted. For series production is melting a device used as a melting unit referred to as.

Diese Abschmelzeinheit besteht aus mehreren Teilen, welche seither entsprechend der Abb. 1 in axialer Richtung zusammenmontiert sind: (S. Urban, D.: Moderne Bildröhrenfertigung mit Turbo- Molekularpumpen, Vakuum in der Praxis (1991) Nr.3 5.196-198)This melting unit consists of several parts, which ever since assembled in the axial direction according to Fig. 1 are: (S. Urban, D .: Modern picture tube production with turbo-molecular pumps, Vacuum in practice (1991) No. 3 5.196-198)

Eine Elektronenröhre 1, wird durch ein Pumpsystem 2 evakuiert. Die Verbindung zwischen Elektronenröhre und Pumpsystem erfolgt über ein rohrförmiges Bauelement 4, den Pumpstengel. Um den Leitwert in dem Pumpstengel möglichst groß zu halten und somit die Auspumpzeit auf ein Minimum zu begrenzen, muß dieser so kurz wie möglich sein. Dies bedeutet, daß der Röhrensockel 16 und das Pumpsystem 2 dicht beieinander angeordnet sein müssen. Zwischen dem Röhrensockel 16 und dem Pumpsystem 2 befindet sich die Abschmelzeinheit 5. Diese besteht aus einem Gehäuse 6 mit Deckel 8, verschiedenen Isolationselementen 9, 10, 11 und der Heizwendel 6. Zum Wechseln der Heizwendel muß die Abschmelzeinheit demontiert werden. Dies geschieht in axialer Richtung nach Lösen der Schrauben 12. Die aus vorgenannten Gründen bedingte sehr enge axiale Bauweise und Anbauten 3, welche zur Behandlung der Elektronenröhre und deren Bauteile während des Auspumpprozesses notwendig sind machen die Demontage äußerst umständlich und zeitraubend. An electron tube 1 is evacuated by a pump system 2. The connection between the electron tube and the pump system is made via a tubular component 4, the pump stem. To the To keep the conductivity in the pump stem as large as possible and thus To limit the pump down time to a minimum, this must be the case be as short as possible. This means that the tube base 16 and the pump system 2 must be arranged close together. Is located between the tube base 16 and the pump system 2 the melting unit 5. This consists of a housing 6 with cover 8, various insulation elements 9, 10, 11 and the heating coil 6. To change the heating coil, the melting unit be dismantled. This is done axially Direction after loosening the screws 12. The ones mentioned above Very narrow axial construction and attachments 3, which are used to treat the electron tube and its components are necessary during the pumping out process Disassembly extremely cumbersome and time consuming.

Die Heizwendel ist ein thermisch hochbelastetes Teil und somit einem großen Verschleiß ausgesetzt. Dadurch ist ein häufiger Wechsel dieses Bauteilsl bedingt. Für eine Serienfertigung stellt das Auswechseln dieser Bauteile und andere Wartungsarbeiten. einen wesentlichen Faktor in Aufwand und Zeit dar. Ein schneller und rationeller Ablauf dieses Fertigungsvorgangs ist anzustreben. Dies ist, wie oben gezeigt wurde, mit der herkömmlichen Konstruktion nur unbefriedigend gelöst.The heating coil is a thermally highly stressed part and therefore subjected to great wear. This makes it a common one This component must be changed. For a series production the replacement of these components and other maintenance work. an essential factor in effort and time. A quick one and the rational course of this manufacturing process should be aimed for. As shown above, this is with the conventional construction only solved unsatisfactorily.

Eine weitere gattungsgemäße Einrichtung ist aus US-A-3 100 251 bekannt.Another generic device is known from US-A-3 100 251.

Die Erfindung hat sich zur Aufgabe gestellt, die Abschmelzeinheit so zu konstruieren, daß im Rahmen einer Serienfertigung das Auswechseln der Heizwendel und andere Wartungsarbeiten ohne großen Aufwand an Zeit und Kosten erfolgen kann.The invention has set itself the task of the melting unit to be constructed in such a way that in the context of series production Replacing the heating coil and other maintenance work can be done without great expenditure of time and money.

Diese Aufgabe wird durch den kennzeichnenden Teil des 1. Patentanspruches gelöst. Der Anspruch 2 stellt eine weitere Ausgestaltungs form der Erfindung dar. Durch die erfindungsgemäße Konstruktion ist es möglich, die Abschmelzeinheit auf einfache Weise ohne Werkzeuge für den Wechsel der Heizwendel in radialer Richtung zu demontieren und wieder zusammen zu bauen.This object is achieved by the characterizing part of the first claim solved. The claim 2 represents a further embodiment of the invention. By the construction according to the invention it is possible to easily use the melting unit without tools for changing the heating coil in radial Disassemble direction and reassemble.

Die Erfindung wird am Beispiel von Elektronenröhren erläutert, ist jedoch nicht auf das vakuumdichte Verschließen von Elektronenröhren beschränkt, sondern bezieht sich auf alle Behälter, welche dauerhaft vakuumdicht durch Abschmelzen verschlossen werden.The invention is explained using the example of electron tubes, is not, however, due to the vacuum tight sealing of electron tubes limited, but refers to all containers, which are permanently sealed in a vacuum-tight manner by melting become.

Anhand der Abb. 2 soll die Erfindung näher erläutert werden.The invention will be explained in more detail with reference to FIG. 2.

Bei der erfindungsgemäßen Anordnung ist die Abschmelzeinheit so konstruiert, daß sie nicht mehr in axialer Richtung demontiert werden muß. Sie besteht aus dem Gehäuse 13, welches die Heizwendel 6 und die Isolationselemente in axialer Richtung umfaßt. Ein Bauteil 14 des Gehäuses 13 ist seitlich herausnehmbar. Mit diesem Bauteil sind die Heizwendel 6 und die Isolationselemente ebenfalls herausnehmbar, ohne daß Verschraubungen gelöst werden müssen. Durch ein Arretierelement 15, z. B. eine Feder, welche vor dem Herausnehmen des Bauteils 14 gelöst wird, wird die gesamte Abschmelzeinheit zusammengehalten.In the arrangement according to the invention is the melting unit constructed so that it can no longer be dismantled in the axial direction must become. It consists of the housing 13, which the Heating coil 6 and the insulation elements in the axial direction includes. A component 14 of the housing 13 is laterally removable. With this component, the heating coil 6 and the insulation elements also removable without screwing have to be solved. By a locking element 15, for. Legs Spring, which released before removing the component 14 the entire melting unit is held together.

Claims (2)

  1. A device for the vacuum-tight sealing of permanently vacuum-tight containers with a vacuum-pump system (2), a tubular connection element (4) between containers (1) and vacuum-pump system (2), which after evacuation of the containers, is permanently sealed in vacuum-tight manner by a melting process, the melting process being implemented by a specific melting unit (5) and the melting unit being provided with a heating coil (6), characterised in that the heating coil (6) is surrounded in the radial and axial directions by a housing (7) and a structural part (14) of the housing (7) is laterally removable, the heating coil (6) also being removable with the structural part (14), without having to release screw connections, and in that a stop element (15) is provided for securing the component (14).
  2. A device according to claim 1, characterised in that a spring is used as the stop element (15).
EP95109961A 1994-07-18 1995-06-27 Device for vacuum-tight sealing of permanently vacuum-tight containers Expired - Lifetime EP0693767B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4425160 1994-07-18
DE4425160A DE4425160A1 (en) 1994-07-18 1994-07-18 Device for vacuum-tight sealing of electron tubes

Publications (2)

Publication Number Publication Date
EP0693767A1 EP0693767A1 (en) 1996-01-24
EP0693767B1 true EP0693767B1 (en) 1999-08-25

Family

ID=6523334

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95109961A Expired - Lifetime EP0693767B1 (en) 1994-07-18 1995-06-27 Device for vacuum-tight sealing of permanently vacuum-tight containers

Country Status (7)

Country Link
US (1) US5567193A (en)
EP (1) EP0693767B1 (en)
JP (1) JPH0845430A (en)
KR (1) KR960005674A (en)
CN (1) CN1118513A (en)
DE (2) DE4425160A1 (en)
TW (1) TW265455B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29606349U1 (en) * 1996-04-01 1997-07-31 Porsche Manfred Heater for melting evacuated picture tubes
CN100419940C (en) * 2002-02-28 2008-09-17 有限会社大和电子工业 Open and close type cylindrical heater for glass tube vacuum sealing
CN102324357A (en) * 2011-09-21 2012-01-18 广州威理照明科技有限公司 Sealing-in equipment and method for CMH (Ceramic Metal Halide) light

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2278500A (en) * 1941-01-31 1942-04-07 Rca Corp Vacuum tube seal-off
GB854305A (en) * 1957-11-18 1960-11-16 Philco Corp Improvements in and relating to the manufacture of electronic tubes and the like
US3100251A (en) * 1960-10-24 1963-08-06 Gen Electric Tip-off oven
US3807006A (en) * 1972-10-31 1974-04-30 Rca Corp Method of installing a mount assembly in a multibeam cathode-ray tube
GB1554067A (en) * 1977-01-24 1979-10-17 Badalex Ltd Manufacture of electric light sources
US4451725A (en) * 1982-07-22 1984-05-29 Rca Corporation Electrical heating unit for sealing vacuum electron tubes
JPH06295677A (en) * 1993-04-07 1994-10-21 Sony Corp Cathode-ray tube manufacturing device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
URBAN, D.: "Moderne Bildröhrenfertigung mit Turbo-Molekularpumpen", VAKUUM IN DER PRAXIS, no. 3, 1991, WEINHEIM DE, pages 196 - 198 *

Also Published As

Publication number Publication date
DE4425160A1 (en) 1996-01-25
CN1118513A (en) 1996-03-13
US5567193A (en) 1996-10-22
DE59506675D1 (en) 1999-09-30
KR960005674A (en) 1996-02-23
JPH0845430A (en) 1996-02-16
TW265455B (en) 1995-12-11
EP0693767A1 (en) 1996-01-24

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