EP0228005A2 - Elément de stockage pour doser et introduire du mercure liquide dans une lampe à décharge - Google Patents

Elément de stockage pour doser et introduire du mercure liquide dans une lampe à décharge Download PDF

Info

Publication number
EP0228005A2
EP0228005A2 EP86117329A EP86117329A EP0228005A2 EP 0228005 A2 EP0228005 A2 EP 0228005A2 EP 86117329 A EP86117329 A EP 86117329A EP 86117329 A EP86117329 A EP 86117329A EP 0228005 A2 EP0228005 A2 EP 0228005A2
Authority
EP
European Patent Office
Prior art keywords
mercury
storage element
metal
alloy
element according
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
EP86117329A
Other languages
German (de)
English (en)
Other versions
EP0228005B1 (fr
EP0228005A3 (en
Inventor
Werner Dr. Schuster
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.)
Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
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 Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Publication of EP0228005A2 publication Critical patent/EP0228005A2/fr
Publication of EP0228005A3 publication Critical patent/EP0228005A3/de
Application granted granted Critical
Publication of EP0228005B1 publication Critical patent/EP0228005B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • 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
    • H01J9/395—Filling vessels

Definitions

  • the invention relates to a storage element for metering and introducing liquid mercury or liquid mercury alloys into a discharge lamp.
  • Mercury is required for the operation of almost all discharge lamps.
  • the mercury In the case of high-pressure discharge lamps, the mercury is brought into the discharge vessel in the form of halide compounds or by direct dropping over the pump handle.
  • glass or metal containers into which the mercury or the mercury alloy is filled in addition to the direct dropping for metering and introduction. These containers are placed near an electrode inside the discharge vessel and opened with the aid of induced high frequency or laser beams after the vessel has been closed, so that the mercury can escape.
  • An example of this is listed in DE-OS 30 41 398.
  • a method is recently proposed in DE patent application 35 34 208.0 in which a strand of liquid mercury is cooled below the solidification point. Sub-strands of the required length, i.e. the required amount of mercury is separated off and introduced into the discharge vessel. This procedure enables a much more precise dosing.
  • the method is very complex in terms of mechanical engineering and, since the corresponding devices have to be integrated into the production machines for the lamps, can be implemented only with great effort.
  • liquid mercury is a major environmental and workplace burden, since mercury has a relatively high vapor pressure, whereby the vapor is highly toxic. When it hits hard documents, it splashes into tiny droplets that are very difficult to collect again.
  • the invention has for its object to provide a storage element for metering and introducing liquid mercury or liquid mercury alloys, which enables precise metering of the mercury and easy introduction of the mercury into the lamp.
  • the physical properties of the mercury or the mercury alloy, such as the high vapor pressure, cannot be changed.
  • the storage element for metering and introducing liquid mercury or liquid mercury alloys into a discharge lamp is characterized according to the invention in that it is a porous compact which stores the defined amount of the metering substance in its pores and consists of a single metal, the melting point of which is above 250 ° C lies, wherein the metal of the compact with mercury does not form an alloy, is wettable by mercury and has a high resistance to oxidation.
  • the compact can also consist of at least two metals forming a mixture or an alloy, this mixture or alloy in turn forming no alloy with mercury, being wettable by mercury and having a melting point which is above 250 ° C. and also the first Metal has more than 50% by weight of the compact and the second or further metals are elements which increase the oxidation resistance of the first metal.
  • Such a compact stores a precisely definable amount of the mercury or the mercury alloy per unit weight of the metal, as will be explained in more detail below. Measurements showed that the amount of mercury stored fluctuated at most by ⁇ 10% in the case of compacts from different batches, which were each produced under the same process conditions. In this way, depending on the weight of the compact, any desired amount of mercury or mercury alloy can even be obtained in the mg range.
  • the pressing body can be introduced very easily into the discharge lamp, and it does not unite either through intermediate storage or through contact Memory leak suffered. In the case of longer storage, this must of course take place either under vacuum or under protective gas, since the mercury evaporates in a normal atmosphere due to the high vapor pressure. An overdosing of the mercury in the lamp is therefore no longer necessary. As a further advantage, it is possible to fix the pressing body in the pump stem, thereby eliminating the removal of fluorescent substances, such as those caused by the dropping of liquid mercury. The heat from the heating of the electrodes then releases the mercury from the compact.
  • Such a compact can be made by adding the mercury or the mercury alloy to one or more electrolysis vessels, each with different metal salt solutions and an anode of the corresponding metal, and electrolytically enriched with the respective metal of the salt solution, so that one or more mercury metal suspensions are formed .
  • the resulting suspension product is overlaid with anhydrous glycerol and annealed at at least 100 ° C. The glycerin is then decanted and the suspension product washed and dried.
  • the unsaved mercury or the unsaved mercury alloy is filtered off, the remaining filter cake is filled into the bore of a steel cylinder and the excess mercury or the excess mercury alloy is pressed out under high pressure using a stamp. With the help of the pressure, the mercury content of the compact can be varied.
  • a brittle compact is formed, which is then pulverized and from which the compact of the corresponding dimensions, e.g. in pill form.
  • the first or only metal for the pressed body is theoretically all elements of the fourth to eighth subgroup of the periodic table, provided that they do not form an alloy with mercury but can be wetted by mercury. In practice, however, only those metals are considered which are non-toxic and / or radioactive and which enable the pressed body to be produced as inexpensively as possible. In this sense, the metals iron and nickel have proven to be suitable, a second metal such as copper being required here in order to achieve sufficient resistance to oxidation. Good storage properties can also be achieved with a press body made of iron, chromium and possibly nickel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
EP86117329A 1985-12-19 1986-12-12 Elément de stockage pour doser et introduire du mercure liquide dans une lampe à décharge Expired - Lifetime EP0228005B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3545073 1985-12-19
DE19853545073 DE3545073A1 (de) 1985-12-19 1985-12-19 Speicherelement zum dosieren und einbringen von fluessigem quecksilber in eine entladungslampe

Publications (3)

Publication Number Publication Date
EP0228005A2 true EP0228005A2 (fr) 1987-07-08
EP0228005A3 EP0228005A3 (en) 1989-05-10
EP0228005B1 EP0228005B1 (fr) 1992-03-04

Family

ID=6288937

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86117329A Expired - Lifetime EP0228005B1 (fr) 1985-12-19 1986-12-12 Elément de stockage pour doser et introduire du mercure liquide dans une lampe à décharge

Country Status (5)

Country Link
US (1) US4808136A (fr)
EP (1) EP0228005B1 (fr)
JP (1) JP2960414B2 (fr)
KR (1) KR940004834B1 (fr)
DE (2) DE3545073A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0479259A3 (en) * 1990-10-01 1992-05-20 Toshiba Lighting & Technology Corporation Mercury vapor discharge lamp
EP0581160A1 (fr) * 1992-07-29 1994-02-02 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Corps d'amalgame ou corps permettant de créer un amalgame pour lampe fluorescente

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3907277A1 (de) * 1989-03-07 1990-09-20 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Quecksilberniederdruckentladungslampe
JP3220472B2 (ja) * 1991-05-16 2001-10-22 ウエスト電気株式会社 冷陰極蛍光放電管
IT1270598B (it) 1994-07-07 1997-05-07 Getters Spa Combinazione di materiali per dispositivi erogatori di mercurio metodo di preparazione e dispositivi cosi' ottenuti
DE19512129A1 (de) * 1995-03-31 1996-10-02 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Niederdruckquecksilberdampfentladungslampe
IT1277239B1 (it) * 1995-11-23 1997-11-05 Getters Spa Dispositivo per l'emissione di mercurio,l'assorbimento di gas reattivi e la schermatura dell'elettrodo all'interno di lampade
IT1291974B1 (it) * 1997-05-22 1999-01-25 Getters Spa Dispositivo e metodo per l'introduzione di piccole quantita' di mercurio in lampade fluorescenti
IT1317117B1 (it) 2000-03-06 2003-05-27 Getters Spa Metodo per la preparazione di dispositivi dispensatori di mercurio dausare in lampade fluorescenti
WO2001078858A2 (fr) 2000-04-12 2001-10-25 Advanced Lighting Technologies, Inc. Materiau solide a degagement de mercure et procede de dosage du mercure dans les lampes a decharge
JP3565137B2 (ja) * 2000-05-26 2004-09-15 ウシオ電機株式会社 放電ランプの製造方法および放電ランプ並びにハロゲン導入用担体
JP3688612B2 (ja) * 2000-09-22 2005-08-31 松下電器産業株式会社 水銀封入体、この水銀封入体の製造方法、およびこの水銀封入体を用いた蛍光ランプ
US7625258B2 (en) * 2006-03-16 2009-12-01 E.G.L. Company Inc. Lamp electrode and method for delivering mercury
US20070216308A1 (en) * 2006-03-16 2007-09-20 Kiermaier Ludwig P Lamp electrode and method for delivering mercury
ITMI20061344A1 (it) * 2006-07-11 2008-01-12 Getters Spa Metodo per il rilascio di mercurio
US8339043B1 (en) * 2011-08-15 2012-12-25 James Bernhard Anderson Arc discharge with improved isotopic mixture of mercury
CA2911621A1 (fr) 2013-05-13 2014-11-20 Board Of Regents, The University Of Texas System Composition d'isotopes du mercure pour eclairage
JP2017019203A (ja) * 2015-07-10 2017-01-26 ニッタ・ハース株式会社 研磨パッド用の材料精製システム

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2651737A (en) * 1950-10-06 1953-09-08 Westinghouse Electric Corp Ignitron
US2929705A (en) * 1956-07-27 1960-03-22 Siemens Ag Process of treating amalgams of metals which are difficultly soluble in mercury
NL280327A (fr) * 1963-11-22
US3657589A (en) * 1969-10-20 1972-04-18 Getters Spa Mercury generation
GB1423981A (en) * 1972-01-13 1976-02-04 Thorn Electrical Ind Ltd Discharge lamp
JPS49132877A (fr) * 1973-02-02 1974-12-20
US4282455A (en) * 1979-11-07 1981-08-04 Gte Products Corporation Mercury dispenser for arc discharge lamps
US4661078A (en) * 1985-12-31 1987-04-28 Gte Products Corporation Methods for dispensing mercury into devices

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0479259A3 (en) * 1990-10-01 1992-05-20 Toshiba Lighting & Technology Corporation Mercury vapor discharge lamp
EP0581160A1 (fr) * 1992-07-29 1994-02-02 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Corps d'amalgame ou corps permettant de créer un amalgame pour lampe fluorescente

Also Published As

Publication number Publication date
DE3545073A1 (de) 1987-07-02
DE3684123D1 (de) 1992-04-09
JP2960414B2 (ja) 1999-10-06
US4808136A (en) 1989-02-28
EP0228005B1 (fr) 1992-03-04
JPS62180933A (ja) 1987-08-08
KR870006611A (ko) 1987-07-13
EP0228005A3 (en) 1989-05-10
KR940004834B1 (ko) 1994-06-01

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