EP1519407A2 - Radiateur UV avec enveloppe tubulaire - Google Patents

Radiateur UV avec enveloppe tubulaire Download PDF

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Publication number
EP1519407A2
EP1519407A2 EP04016505A EP04016505A EP1519407A2 EP 1519407 A2 EP1519407 A2 EP 1519407A2 EP 04016505 A EP04016505 A EP 04016505A EP 04016505 A EP04016505 A EP 04016505A EP 1519407 A2 EP1519407 A2 EP 1519407A2
Authority
EP
European Patent Office
Prior art keywords
discharge vessel
imaginary
electrode
pipe
outer electrode
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.)
Withdrawn
Application number
EP04016505A
Other languages
German (de)
English (en)
Other versions
EP1519407A3 (fr
Inventor
Rainer Dr. Kling
Markus Dr. Roth
Reinhold Wittkötter
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 EP1519407A2 publication Critical patent/EP1519407A2/fr
Publication of EP1519407A3 publication Critical patent/EP1519407A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J65/00—Lamps without any electrode inside the vessel; Lamps with at least one main electrode outside the vessel
    • H01J65/04—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels
    • H01J65/042—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels by an external electromagnetic field
    • H01J65/046—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels by an external electromagnetic field the field being produced by using capacitive means around the vessel

Definitions

  • the invention is based on a UV emitter with a for the production of one-sided dielectric barrier discharges designed, essentially tubular, on both sides gas-tight sealed discharge vessel.
  • UV lamps for lighting purposes such as general lighting, unsuitable , Rather, they are used in process technology, especially for surface cleaning and activation, photolytics, ozone generation, drinking water purification, metallization, and UV curing.
  • the invention also relates to high power UV radiators, i. long radiators, e.g. with lengths of typically a few 10 cm to about 2 m or more.
  • UV-emitters based on dielectric have proven to be particularly efficient Barrier discharge proved, especially if they are in accordance with operated according to the pulsed operating method described in US 5,604,410 become.
  • dielectric barrier discharge is defined as at least a so-called dielectrically impeded electrode ahead.
  • a dielectric Disabled electrode is opposite the interior of the discharge vessel or of the discharge medium separated by means of a dielectric, for example in which the electrode on the outside of typically out Glass or other dielectric wall of the discharge vessel is arranged. This type of electrodes will be shortened in the following also referred to as "outer electrode”.
  • the present invention relates to a UV emitter comprising at least one outer electrode having the aforementioned type.
  • the UV lamp includes a tubular, sealed on both sides discharge vessel, which encloses a discharge medium.
  • the discharge medium is an ionizable Filling used, which usually consists of a noble gas, For example, xenon or a gas mixture with additional buffer gas such as neon or halogen additives, for example chlorine, fluorine etc ..
  • Within the discharge vessel is at least one electrode, in the following shortening also referred to as "inner electrode” arranged. This inner electrode is unhindered, i. in direct contact with the discharge medium. It is therefore a UV emitter based on a one-sided dielectric disabled discharge.
  • a high voltage is applied between inner and outer electrode (s), thereby generating a gas discharge inside the discharge vessel.
  • the pulsed operating method described in the already mentioned US Pat. No. 5,604,410 is preferably used, in particular unipolar voltage pulses.
  • the outer electrode is preferably connected to earth at zero potential ("earthed").
  • the inner electrode is supplied with negative voltage pulses, ie acts as a cathode during each voltage pulse.
  • excimers are formed in the discharge medium.
  • Excimers are excited molecules, such as Xe 2 *, XeCl *, which emit electromagnetic radiation when they return to the normally unbound or weakly bound ground state.
  • Xe 2 * or XeCl * the maximum of the molecular beam radiation is approximately 172 nm and 308 nm, respectively.
  • the document WO 01/35442 shows a UV radiator with a tubular discharge vessel. Within the discharge vessel is centrally a helical axial Electrode arranged. On the outside of the discharge vessel are evenly distributed with respect to the extent of several parallel to the tube axis extending strip-shaped electrodes. This radiates the radiator substantially uniform over the entire circumference, i. rotationally symmetric, that is undirected from. For flat surfaces to be efficiently irradiated can be used, the use of additional reflectors is necessary, the greatest possible amount of radiation evenly on the surface to be irradiated to steer. In order to produce spotlights with lengths of more than 20 cm, is for the centric inner electrode a holder, for example a provided axial support tube.
  • the object of the present invention is to provide a UV radiator with tubular Discharge vessel and non-rotationally symmetric radiation characteristic specify.
  • Other aspects include the possibility of emitters higher Performance, i. to manufacture long spotlights and a high radiation efficiency to achieve.
  • a UV emitter with a for generating essentially designed by one-sided dielectric barrier discharges tubular, on both sides gas-tight sealed discharge vessel and in each case at least one elongate, parallel to the longitudinal axis of the discharge vessel oriented inner and outer electrode, characterized that on the inside of an imaginary first half of the tube tubular part of the discharge vessel, the at least one inner electrode and on the outside of an opposite imaginary second one Pipe half which is arranged at least one outer electrode, wherein the two opposite tube halves through a longitudinal axis of the tubular discharge vessel contained imaginary section through the Discharge vessel are defined.
  • the at least one inner electrode is on the inside the first imaginary pipe half arranged.
  • the at least one Outer electrode is on the outside of the second imaginary pipe half arranged and that at least in the case of an inner and an outer electrode essentially diametrically.
  • the substantially diametrical arrangement of inner and outer electrode On the one hand has the advantage of high radiation efficiency due to the relative to the discharge vessel diameter large striking distance for the discharge, as taught by the already mentioned US 5,604,410. On the other hand it opens up the possibility of moving away from a substantially rotationally symmetric and to come to a more directional radiation characteristic.
  • the flat outer electrode e.g. be realized by a coating or by a suitably shaped metal part into which the outside of the second tube half of the discharge vessel is embedded as it were.
  • the flat design the outer electrode has the advantage that they still at the same time as a reflector can act for the UV radiation, thereby reducing the targeted radiation is further improved.
  • the outer electrode a material with sufficient reflection properties for UV radiation, For example, aluminum, to be selected.
  • the flat external electrode can also more than one, for example Use two, three or more strip-shaped external electrodes become.
  • the electrodes are not symmetrical with respect to the entire circumference of the Discharge vessel arranged, but preferably symmetrically with respect a plane intersecting the imaginary pipe half which is - in cross-section considered as a perpendicular bisector of the imaginary pipe half corresponding Semicircle represents.
  • the radiation efficiency with e.g. two strip-shaped outer electrodes higher is, as with a flat outer electrode, for example in the form of a half-mirrored arrangement.
  • the belonging to the internal electrodes Pipe half is to be used as a radiating surface, i. especially then, if the other half of the tube is largely or even completely with one or is covered by a plurality of external electrodes, the internal electrodes are preferably positioned relatively close to the imaginary cutting plane, but only as far as still sufficient distance to the nearest outer electrode remains. In this way, the largest possible electrode-free radiating surface achieved.
  • the other half of the tube belonging to the outer electrodes can be considered. Which side to give preference depends ultimately on the individual case of the concrete arrangement of all electrodes.
  • the internal electrodes strip-shaped electrodes since the latter typically from Leitsilberbahnen or the like. Because the inner electrode for efficiency reasons not covered with an additional dielectric layer and thus is separated from the discharge medium (unilaterally dielectrically impeded discharge), would namely during operation of the lamp low solvent residues and similar volatiles of such an electrode web outgas, thereby entering the discharge medium and the generation of radiation deteriorate unacceptably. Instead, for the inner electrode a metal wire as pure as possible or the like used.
  • the inner electrode On the inside of the first tube half of the discharge vessel to fix.
  • the holder is, for example, depending on the length of the spotlight from one or more narrow Pipe pieces, half pipe pieces or rings, through which the elongated inner electrode threaded through.
  • the inner electrode on the mentioned Inside of the discharge vessel even with very long lamps, e.g. with more than approx. 1 m length, sufficient hold without significantly sagging.
  • the inner electrode is e.g. trained as a staff, especially simply thread through the "eyelet-like" holder.
  • the at least one inner electrode is made of metal, preferably made of tungsten or molybdenum.
  • a metal wire into consideration that with another metal, e.g. coated with platinum.
  • the helix does not necessarily have to be rotationally symmetric, i.e.
  • the holder is made of a temperature-resistant dielectric material, preferably glass, quartz glass or ceramic.
  • the holder is preferred from the same material as the discharge vessel wall. Then lets namely, the holder by simply merging with the discharge vessel attach to the inside.
  • the holder also be fixed by means of glass solder, but because of the before closing the discharge vessel to be expelled solvent of the glass solder paste problematic with regard to contamination of the discharge medium can be.
  • the UV emitter 1 has a substantially tubular discharge vessel 2 Quartz glass, the first end to a dome-like cap 3 including molten pump tip 3a is formed and that at his other end is sealed gas-tight by means of a pinch seal 4.
  • the discharge vessel 2 is filled with xenon at a pressure of 150 mbar. With a length of about 68 cm forms the tubular part 5 of the discharge vessel the main part of the for an electrical power consumption of approx. 50 W UV lamp 1.
  • the total length of the discharge vessel is about 72 cm.
  • the inner and outer diameter of the tubular Part 5 is 28 mm or 30 mm.
  • the tubular part 5 is through an imaginary sectional plane S, which contains the longitudinal axis L, in two imaginary Pipe halves 5a, 5b split.
  • an inner electrode 6 made of a 1 mm thick molybdenum wire is arranged, which extends over the entire length of the tube half 5a and parallel to Longitudinal axis of the discharge vessel 2 extends.
  • three is a holder Serving 8 mm long quartz tube pieces 7 (see Fig. 1c) is the rod-shaped Inner electrode 6 is attached to the inside of the first tube half 5a, that the distance to the mentioned imaginary sectional plane S maximum is.
  • the quartz tube pieces 7 are fused directly to the vessel wall. you Inner diameter is only slightly larger than the diameter of the inner electrode 6, so that the inner electrode 6 is still through the already on the Inside the first tube half 5a attached quartz tube pieces 7 therethrough threading, but still reliably fixed. Through the pinch seal 5 through the inner electrode 6 is guided gas-tight to the outside.
  • On the Outside of the second tube half 5b are two strip-shaped each 2 mm wide Outer electrodes 8a, 8b made of silver solder parallel to the longitudinal axis of the Discharge vessel 2 applied. Their mutual shortest distance is 27 mm.
  • the two outer electrodes 8a, 8b symmetrically positioned such that both are the same Distance to this plane S have.
  • pulsed operation form two discharge levels consisting of numerous partial discharges (not shown), one each between the inner electrode and each the two outer electrodes. For more details about the partial discharges Reference is made to the already cited US 5,604,410.
  • the invention also easily allows longer spotlights to build as shown in Fig. 1a, in which correspondingly more than three Breakpoints are provided (not shown).
  • the inner electrode does not consist of a rod-shaped wire but rather from a wire helix.
  • the support parts e.g. short pieces of pipe or rings, with the Connected vessel wall and then the wire helix through the support parts threaded.
  • FIGS. 2 to 5 show variants of the UV emitter according to the invention, which differ only by the respective electrode configuration. The same features are provided with the same reference numerals.
  • Fig. 2 shows a cross section corresponding to Fig. 1b by a variant of UV emitter according to the invention with three strip-shaped outer electrodes 9a - 9c. Due to the longer impact distance between the inner electrode. 6 and the center outer electrode 9b forms the middle discharge plane (not shown) only at higher coupled-in electrical power, than this for the other two, i. between the inner electrode 6 and the two "outer" outer electrode 9a and 9c lying discharge planes the case is.
  • Fig. 3 shows a cross section through a variant with four strip-shaped Outer electrodes 10a-10d.
  • Fig. 4 shows a cross section corresponding to Fig. 1b by a variant of UV emitter according to the invention with five strip-shaped outer electrodes 11a-11e and two rod-shaped internal electrodes 12a, 12b. Both internal electrodes 12a, 12b are for a first polarity and all external electrodes 11a-11e are for a second polarity of the supply voltage intended. Each of the two internal electrodes 12a, 12b is each a half-pipe piece 13a, 13b attached to the inside of the associated pipe half 5a.
  • Fig. 5 shows a cross section corresponding to Fig. 1b by a variant of UV emitter according to the invention with a flat outer electrode 14 and a rod-shaped inner electrode 6 with holder 7.
  • the outer electrode 14 consists of a the entire outside of the associated tube half 5b covering aluminum layer. In operation, it forms between the inner electrode 6 and the entire surface outer electrode 14 is a relatively diffuse Discharge off.
  • Fig. 6 shows an enlarged detail corresponding to that shown in Fig. 1b Area C of a variant of the UV emitter according to the invention.
  • the inner diameter clearly larger than the diameter of the wire-shaped inner electrode 6 allows the inner electrode 6 easier through the on the inside of the Thread tube half 5a pre-assembled tube pieces 15.
  • has a bigger one Inner diameter has the advantage of having no or at least less form parasitic G researchingtladungen in the region of the brackets.
  • FIG. 7 shows a further variant with the only difference compared to FIG. 6, that the holder for the inner electrode 6 as half pipe piece 16th is trained.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)
  • Plasma Technology (AREA)
  • Lasers (AREA)
EP04016505A 2003-08-06 2004-07-13 Radiateur UV avec enveloppe tubulaire Withdrawn EP1519407A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10336088 2003-08-06
DE10336088A DE10336088A1 (de) 2003-08-06 2003-08-06 UV-Strahler mit rohrförmigem Entladungsgefäß

Publications (2)

Publication Number Publication Date
EP1519407A2 true EP1519407A2 (fr) 2005-03-30
EP1519407A3 EP1519407A3 (fr) 2007-08-15

Family

ID=34111979

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04016505A Withdrawn EP1519407A3 (fr) 2003-08-06 2004-07-13 Radiateur UV avec enveloppe tubulaire

Country Status (8)

Country Link
US (1) US7411349B2 (fr)
EP (1) EP1519407A3 (fr)
JP (1) JP2005056845A (fr)
KR (1) KR100638955B1 (fr)
CN (1) CN100423176C (fr)
CA (1) CA2476354A1 (fr)
DE (1) DE10336088A1 (fr)
TW (1) TWI252500B (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004023460A1 (de) * 2004-05-12 2005-12-08 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Rohrförmige dielektrische Barriere-Entladungslampe und Verfahren zu ihrer Herstellung
JP5293986B2 (ja) * 2005-07-29 2013-09-18 株式会社Ｇｓユアサ 紫外線ランプおよび紫外線照射装置
JP5307029B2 (ja) * 2007-12-17 2013-10-02 株式会社オーク製作所 放電ランプ
US9493366B2 (en) 2010-06-04 2016-11-15 Access Business Group International Llc Inductively coupled dielectric barrier discharge lamp
DE102012017779A1 (de) * 2012-09-07 2014-03-13 Karlsruher Institut für Technologie Dielektrisch behinderte Entladungs-Lampe
KR101464470B1 (ko) * 2013-09-12 2014-11-27 주식회사 부원생활가전 핸드믹서기용 분쇄통
CN108919076B (zh) * 2018-08-06 2024-01-23 广东电网有限责任公司 一种双极植入式电缆接头局放传感器

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0385205A1 (fr) * 1989-02-27 1990-09-05 Heraeus Noblelight GmbH Dispositif de radiation à haute puissance
DE4311197A1 (de) * 1993-04-05 1994-10-06 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Verfahren zum Betreiben einer inkohärent strahlenden Lichtquelle
WO2000062330A1 (fr) * 1999-04-14 2000-10-19 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lampe a decharge comportant un culot
JP2002245972A (ja) * 2001-02-16 2002-08-30 Toshiba Lighting & Technology Corp 放電ランプおよび光照射装置
WO2002082500A1 (fr) * 2001-03-30 2002-10-17 Matsushita Electric Industrial Co., Ltd. Lampe d'halogenure metallise pour phares de vehicules

Family Cites Families (13)

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Publication number Priority date Publication date Assignee Title
JPH02273452A (ja) * 1989-04-13 1990-11-07 Toshiba Lighting & Technol Corp 冷陰極放電灯およびその電極の製造方法
JPH0711949B2 (ja) * 1989-12-20 1995-02-08 東芝ライテック株式会社 けい光ランプおよびこれを用いたランプ装置
CH680099A5 (fr) * 1990-05-22 1992-06-15 Asea Brown Boveri
JP3608310B2 (ja) * 1995-10-12 2005-01-12 東芝ライテック株式会社 高圧放電ランプおよび点灯回路装置ならびに照明器具
US5889366A (en) * 1996-04-30 1999-03-30 Ushiodenki Kabushiki Kaisha Fluorescent lamp of the external electrode type and irradiation unit
DE19636965B4 (de) * 1996-09-11 2004-07-01 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Elektrische Strahlungsquelle und Bestrahlungssystem mit dieser Strahlungsquelle
DE19718395C1 (de) * 1997-04-30 1998-10-29 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Leuchtstofflampe und Verfahren zu ihrem Betrieb
EP1059659A4 (fr) * 1998-12-28 2002-03-13 Japan Storage Battery Co Ltd Tube a decharge silencieux et procede d'utilisation
JP3674695B2 (ja) * 1999-06-07 2005-07-20 東芝ライテック株式会社 放電ランプ、放電ランプ装置
DE19953533A1 (de) * 1999-11-05 2001-05-10 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Entladungslampe mit Elektrodenhalterung
KR100340440B1 (ko) * 2000-07-20 2002-06-12 구본준, 론 위라하디락사 액정표시장치용 램프장치
US6946794B2 (en) * 2001-11-22 2005-09-20 Matsushita Electric Industrial Co., Ltd. Light source device and image reader
JP2003178719A (ja) * 2001-12-12 2003-06-27 Harison Toshiba Lighting Corp 蛍光ランプ

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0385205A1 (fr) * 1989-02-27 1990-09-05 Heraeus Noblelight GmbH Dispositif de radiation à haute puissance
DE4311197A1 (de) * 1993-04-05 1994-10-06 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Verfahren zum Betreiben einer inkohärent strahlenden Lichtquelle
WO2000062330A1 (fr) * 1999-04-14 2000-10-19 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lampe a decharge comportant un culot
JP2002245972A (ja) * 2001-02-16 2002-08-30 Toshiba Lighting & Technology Corp 放電ランプおよび光照射装置
WO2002082500A1 (fr) * 2001-03-30 2002-10-17 Matsushita Electric Industrial Co., Ltd. Lampe d'halogenure metallise pour phares de vehicules

Also Published As

Publication number Publication date
JP2005056845A (ja) 2005-03-03
CA2476354A1 (fr) 2005-02-06
DE10336088A1 (de) 2005-03-03
TWI252500B (en) 2006-04-01
KR100638955B1 (ko) 2006-10-25
US7411349B2 (en) 2008-08-12
CN1581419A (zh) 2005-02-16
TW200514122A (en) 2005-04-16
CN100423176C (zh) 2008-10-01
KR20050016160A (ko) 2005-02-21
US20050029948A1 (en) 2005-02-10
EP1519407A3 (fr) 2007-08-15

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