DE860092C - Process for high-quality cleaning of metals, especially for discharge vessels for generating light - Google Patents

Process for high-quality cleaning of metals, especially for discharge vessels for generating light

Info

Publication number
DE860092C
DE860092C DEL8107A DEL0008107A DE860092C DE 860092 C DE860092 C DE 860092C DE L8107 A DEL8107 A DE L8107A DE L0008107 A DEL0008107 A DE L0008107A DE 860092 C DE860092 C DE 860092C
Authority
DE
Germany
Prior art keywords
discharge
metals
generating light
cleaning
vessels
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
DEL8107A
Other languages
German (de)
Inventor
Gustav Dr Leithaeuser
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DEL8107A priority Critical patent/DE860092C/en
Application granted granted Critical
Publication of DE860092C publication Critical patent/DE860092C/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
    • H01J61/24Means for obtaining or maintaining the desired pressure within the vessel
    • H01J61/26Means for absorbing or adsorbing gas, e.g. by gettering; Means for preventing blackening of the envelope

Description

Verfahren zur hochwertigen Reinigung von Metallen, insbesondere für Entladungsgefäße zur Lichterzeugung Bei Entladungen zur Lichterzeugung in besonderen elektrischen Entladungsgefäßen tritt oft die Aufgabe auf, im. Entladungsraum reine Metalle zur Verfügung zu haben, damit bei entstehender Entladung keine chemische Reaktion dieser Metalle innerhalb der Entladung auftritt. Eine solche Reaktion würde oftmals, eine Schwärzung der durchsichtigen Wand des Entladungsgefäßes zur Folge haben, die damit die Lichtausbeute der An@ ordnung erheblich beeinträchtigt. Wenn man für den vorliegenden Zweck Metalle verwendet, welche nach dem üblichen Reinigungsverfahren der Chemie bereits einen hohen Grad von Reinheit erreicht haben, so zeigt sieh doch, daß des öfteren beim Benutzen solcher Metalle in der Entladungsbahn die vorher erwähnte Schwärzung ,des Entladungs gefäßes eintritt.Process for high-quality cleaning of metals, especially for Discharge vessels for generating light For discharges for generating light in particular The task of electrical discharge vessels often occurs in. Discharge space pure To have metals available so that no chemical ones are present in the event of a discharge Reaction of these metals occurs within the discharge. Such a reaction would often the result is a blackening of the transparent wall of the discharge vessel have, which thus significantly impair the light yield of the arrangement. if one uses metals for the present purpose, which after the usual cleaning process chemistry have already reached a high degree of purity, so look that the previously mentioned one often occurs when using such metals in the discharge path Blackening of the discharge tube.

Die vorliegende Erfindung sieht nun vor, die in Gasentladungsröhren, zu- benutzenden Metalle einer Nachreinigung zu unterwerfen.. Erfindungsgemäß geht man so vor, daß das betreffende Material oder Metall auf dem Weg ödes Einbringens ;in das, Entladungsgefäß einer Hoch.frequenzentladung unterworfen wird.The present invention now provides that in gas discharge tubes, to subject metals to be used to a post-cleaning .. According to the invention goes one in such a way that the material or metal in question is on the way desolate introduction ; into which, the discharge vessel is subjected to a high-frequency discharge.

Es ist an und für sich bekannt., Metalle wie Quecksilber, Natrium usw. elektrischen 4ntladungen, zum Zweck der Reinigung rauszusetzen. Bei diesen Entladungsvorgängen entsteht entweder eine Glimmentladung, positive Säule oder Bogenentladung, wobei durch Reaktion der vorhandenen Gase mit dem. Metall ein vorzeitiges Ausscheiden der Verunreinigungen bewirkt wird. Wenn man erfindungsgemäß die Entladung mit Hochfrequenzströmen erzeugt, tritt der Vorteil ein, daß man den Vorgang der Reinigung ohne zusätzliche Einschmelzeng von Elektroden in den Zubringerweg vornehmen kann.It is known in and of itself, metals such as mercury, sodium etc. electrical discharges, for cleaning purposes. With these Discharge processes either a glow discharge, positive column or arc discharge, being by reaction of the existing Gases with the. Metal a premature Elimination of the impurities is effected. If you according to the invention the discharge generated with high-frequency currents, there is the advantage that the process of Carry out cleaning without additional melting of electrodes in the feeder path can.

Es werden zweckmäßig Außenelektroden in Abständen beispielsweise von einigen Zentimetern an den gasleitenden Zubringerweg, z. B. eine Glasröhre, angelegt und eine Hochfrequenzentladunig zwischen diesen Elektroden eingeleitet. Destilliert man nunmehr das einzubringende Metall, so daß der Metalldampf in das 'herzustellende Entladungsgefäß für die Lichterzeugung einströmt, so wird erfindungsgemäß durch Reaktion des Metalldampfes mit der HF-Entladungeine Nachreinigung des betreffenden Materials erzielt. Insbesondere werden Reste von Wasser, von Stickstoff und Sauerstoff und Wasserdampf auf diese Weise entfernt. Die Aufrechterhaltung .der HF-Entladung kann erfindungsgemäß eine bestimmte Zeit lang erfolgen, welche auch automatisch in der Fabrikation eingestellt werden kann. Auch kann erfindungsgemäß die Dichte der HF-Entladung dadurch reguliert oder geändert werden,, daß in den Strömungsweg des einzubringenden Metalls Glasröhren: von engerem Querschnitt als in der übrigen Apparatur eingefügt werden; ebenfalls kann man erfindungsgemäß die HF-Entladung in einem Sondergefäß zweckmäßig von kugelförmiger Gestalt erfolgen lassen, in, dem eine besondere Erhitzung des Metalls zweckmäßig auch durch HF-Strom vorgenommen werden kann. Die Erfindung sieht auch vor, Sammellgefäße für das: endgültig gereinigte Metall vor dem Einlauf in die herzustellenden Lichtquellen einzuschalten, damit eine größere Reserve des so gereinigten Stoffesi vorliegt.It is expedient to use external electrodes at intervals of, for example a few centimeters to the gas-conducting feeder path, z. B. a glass tube applied and a high frequency discharge is initiated between these electrodes. Distilled one now the metal to be introduced, so that the metal vapor in the 'to be produced The discharge vessel for generating light flows in, according to the invention Reaction of the metal vapor with the HF discharge Materials achieved. In particular, there are residues of water, nitrogen and oxygen and removes water vapor in this way. Maintaining the HF discharge can take place according to the invention for a certain time, which also automatically can be adjusted in the factory. According to the invention, the density the HF discharge can be regulated or changed by being in the flow path of the metal to be introduced Glass tubes: of narrower cross-section than the rest Apparatus to be inserted; the HF discharge can also be used according to the invention in a special vessel expediently made of spherical shape, in, the a special heating of the metal expediently also carried out by HF current can be. The invention also provides collecting vessels for the: finally cleaned To switch on metal before entering the light sources to be produced, with it there is a larger reserve of the material purified in this way.

Claims (1)

PATENTANSPRÜCHE: i. Verfahren zur hochwertigen. Reinigung von Mefällen, insbesondere für Entladungsgefäße zur Lichterzeugung, dadurch gekennzeichnet, daß das zu reinigende Metall vor der Einfüllung in die endgültigen Entladungsgefäße vorzugsweise in dampfförmnigem Zustand einer HF-Entladung ausgesetzt wird. a. Verfahren nach Anspruch i, dadurch. gekennzeichnet, daß der zu reinigende Metalldampf auf seinem Weg in das zur Lichterzeugung zu verwendende Gefäß der HF-Entladung ausgesetzt wird. 3. Verfahren nach Anspruch i oder z, dadurch gekennzeichnet, daß. an den zur Reinigung benutzten Gefäßen oder Strömungswegen Außenelektroden angebracht sind, zwischen denen die HF-Entladung erzeugt wird. q.. Verfahren nach: Anspruch i, a oder 3, dadurch gekennzeichnet,. daß indem Reinigungsweg der Druck des inerten Gases so eingestellt wird, daß eine hinreichend starke positive Säule entstehen kann. PATENT CLAIMS: i. Process for high quality. Cleaning of cases, in particular for discharge vessels for generating light, characterized in that the metal to be cleaned is exposed to an HF discharge, preferably in a vaporous state, before being filled into the final discharge vessel. a. Method according to claim i, characterized. characterized in that the metal vapor to be cleaned is exposed to the HF discharge on its way into the vessel to be used for generating light. 3. The method according to claim i or z, characterized in that. External electrodes are attached to the vessels or flow paths used for cleaning, between which the HF discharge is generated. q .. Method according to: Claim i, a or 3, characterized in that. that in the cleaning path the pressure of the inert gas is adjusted so that a sufficiently strong positive column can arise.
DEL8107A 1951-01-14 1951-01-14 Process for high-quality cleaning of metals, especially for discharge vessels for generating light Expired DE860092C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEL8107A DE860092C (en) 1951-01-14 1951-01-14 Process for high-quality cleaning of metals, especially for discharge vessels for generating light

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL8107A DE860092C (en) 1951-01-14 1951-01-14 Process for high-quality cleaning of metals, especially for discharge vessels for generating light

Publications (1)

Publication Number Publication Date
DE860092C true DE860092C (en) 1952-12-18

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
DEL8107A Expired DE860092C (en) 1951-01-14 1951-01-14 Process for high-quality cleaning of metals, especially for discharge vessels for generating light

Country Status (1)

Country Link
DE (1) DE860092C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1136775B (en) * 1959-11-30 1962-09-20 Akad Wissenschaften Ddr Noble gas discharge lamp, preferably for generating light pulses
DE1415406B1 (en) * 1958-04-30 1970-08-20 Siemens Ag Ceramic resistor with a high positive temperature coefficient of its total resistance value

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1415406B1 (en) * 1958-04-30 1970-08-20 Siemens Ag Ceramic resistor with a high positive temperature coefficient of its total resistance value
DE1136775B (en) * 1959-11-30 1962-09-20 Akad Wissenschaften Ddr Noble gas discharge lamp, preferably for generating light pulses

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