DE393501C - Gas filling for glow tubes - Google Patents

Gas filling for glow tubes

Info

Publication number
DE393501C
DE393501C DEM79347D DEM0079347D DE393501C DE 393501 C DE393501 C DE 393501C DE M79347 D DEM79347 D DE M79347D DE M0079347 D DEM0079347 D DE M0079347D DE 393501 C DE393501 C DE 393501C
Authority
DE
Germany
Prior art keywords
chlorine
gas filling
gases
hydrogen chloride
glow tubes
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
DEM79347D
Other languages
German (de)
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.)
Medicinisch Tech Co G M B
Original Assignee
Medicinisch Tech Co G M B
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 Medicinisch Tech Co G M B filed Critical Medicinisch Tech Co G M B
Priority to DEM79347D priority Critical patent/DE393501C/en
Application granted granted Critical
Publication of DE393501C publication Critical patent/DE393501C/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00Gas-discharge or vapour-discharge lamps
    • H01J61/02Details
    • H01J61/12Selection of substances for gas fillings; Specified operating pressure or temperature

Landscapes

  • Discharge Lamp (AREA)

Description

Gasfüllung für Glimmlichtröhren. Zur Füllung von Glimmlichtröhren jeder Art, insbesondere auch von Glimmlichtlampen, verwendet man gewöhnlich ein Gemisch von N eon und Helium mit einem geringen Zusatz von Wasserstoff, Stickstoff oder Argon. Durch diese Zusätze wird der Kathodenfall herabgesetzt, wodurch einerseits die Speisung der Lampe mit einem Strom von verhältnismäßig niedriger Spannung möglich, anderseits die kathodische Zertäubung verlangsamt und infolgedessen die Lebensdauer der Lampe erhöht wird.Gas filling for glow light tubes. For filling glow tubes of any kind, especially glow lamps, are usually used Mixture of neon and helium with a small addition of hydrogen and nitrogen or argon. Through these additives, the cathode fall is reduced, which on the one hand the lamp can be supplied with a current of relatively low voltage, on the other hand, the cathodic sputtering slows down and consequently the service life the lamp is increased.

Gemäß der Erfindung wird eine weitere beträchtliche Herabsetzung des Kathodenfalles noch dadurch erzielt, daß außer den bekannten Zusätzen noch eine im Verhältnis zu den anderen Gasen sehr geringe Menge Chlor oder Chlorwasserstoff oder beides zugleich dem Füllgas beigemengt wird. Zweckmäßig mischt man .die Zusatzgase vor ihrer Einführung in die Lampe mit der erforderlichen Menge Chlor oder Chlorwasserstoff. Ein brauchbares Zusatzgasgemisch erhält man gemäß der Erfindung in sehr einfacher Weise dadurch, daß man die "Zusatzgase nicht wie sonst üblich über Phosphorpentoxyd, sondern über , Chlorkalzium trocknet, wobei die Zusatzgase Spuren von Chlor oder Chlorwasserstoff aufnehmen.According to the invention, a further significant reduction in the Cathode case still achieved by the fact that in addition to the known additives another very small amount of chlorine or hydrogen chloride in relation to the other gases or both are added to the filling gas at the same time. It is advisable to mix the additional gases before their introduction into the lamp with the required amount of chlorine or hydrogen chloride. A useful additional gas mixture is obtained in a very simple manner according to the invention Way by not using the "additional gases as usual via phosphorus pentoxide, but over, calcium chloride dries, with the additional gases traces of chlorine or Absorb hydrogen chloride.

Selbstverständlich darf man im vorliegenden Falle keine Elektroden aus solchen Metallen verwenden, die durch Chlor oder Chlorwasserstoff angegriffen werden. Elektroden aus reinem Eisen sind brauchbar, doch kann die Widerstandsfähigkeit der Elektroden gegen die Einwirkungen des Chlors und des Chlorwasserstoffes bedeutend erhöht werden, indem man statt des reinen Eisens eine Legierung desselben mit anderen Metallen verwendet, insbesondere mit solchen Metallen, die dem Eisen chemisch verwandt sind und einen möglichst hohen Schmelzpunkt haben.Of course, electrodes are not allowed in the present case Use from metals that are attacked by chlorine or hydrogen chloride will. Pure iron electrodes are useful, but resilience can of the electrodes against the effects of chlorine and hydrogen chloride be increased by alloying it with others instead of pure iron Metals used, especially with those metals that are chemically related to iron and have the highest possible melting point.

Die im vorliegenden Falle in Betracht kommende Menge des Chlors bzw. des Chlorwasserstoffs ist so gering, daß Elektroden aus elektronegativen Metallen nicht angegriffen werden, besonders wenn das Füllgas, wie üblich, sorgfältig getrocknet ist. Elektroden aus elektropositiveren Metallen werden auch nur während außergewöhnlich langer Ruhepausen angegriffen, wobei allenfalls ein Teil des Chlors verbraucht wird, nach kurzer Inbetriebnahme der Lampe wird jedoch das gebildete Chlorid stets wieder vollständig zu Metall reduziert.The amount of chlorine or chlorine to be considered in the present case The amount of hydrogen chloride is so low that electrodes made of electronegative metals are not attacked, especially if the filling gas, as usual, carefully dried is. Electrodes made from more electropositive metals are also exceptional only during attacked for long periods of rest, with some of the chlorine being consumed, However, after the lamp has been switched on for a short time, the chloride formed will always be restored completely reduced to metal.

Claims (1)

PATENTANSPRUCH Gasfüllung für Glimmlichtröhren, die aus Edelgasen mit einem Zusatz eines chemisch aktiven Gases besteht, gekennzeichnet durch einen weiteren Zusatz einer im Vergleich zu den anderen Gasen außerordentlich geringen Menge Chlor oder Chlorwasserstoff oder dieser beiden Gase zugleich. PATENT CLAIM Gas filling for glow light tubes, which consists of noble gases with the addition of a chemically active gas, characterized by a further addition of an extremely small amount of chlorine or hydrogen chloride or these two gases at the same time compared to the other gases.
DEM79347D 1922-10-20 1922-10-20 Gas filling for glow tubes Expired DE393501C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEM79347D DE393501C (en) 1922-10-20 1922-10-20 Gas filling for glow tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM79347D DE393501C (en) 1922-10-20 1922-10-20 Gas filling for glow tubes

Publications (1)

Publication Number Publication Date
DE393501C true DE393501C (en) 1924-04-03

Family

ID=7318385

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM79347D Expired DE393501C (en) 1922-10-20 1922-10-20 Gas filling for glow tubes

Country Status (1)

Country Link
DE (1) DE393501C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007000723A2 (en) * 2005-06-29 2007-01-04 Philips Intellectual Property & Standards Gmbh Low-pressure discharge lamp comprising molecular radiator and additive

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007000723A2 (en) * 2005-06-29 2007-01-04 Philips Intellectual Property & Standards Gmbh Low-pressure discharge lamp comprising molecular radiator and additive
WO2007000723A3 (en) * 2005-06-29 2007-10-25 Philips Intellectual Property Low-pressure discharge lamp comprising molecular radiator and additive

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