EP0515711A1 - Radiateur à haute puissance - Google Patents

Radiateur à haute puissance Download PDF

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Publication number
EP0515711A1
EP0515711A1 EP91108604A EP91108604A EP0515711A1 EP 0515711 A1 EP0515711 A1 EP 0515711A1 EP 91108604 A EP91108604 A EP 91108604A EP 91108604 A EP91108604 A EP 91108604A EP 0515711 A1 EP0515711 A1 EP 0515711A1
Authority
EP
European Patent Office
Prior art keywords
electrodes
dielectric
electrode
protective layer
power radiator
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Withdrawn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
EP91108604A
Other languages
German (de)
English (en)
Inventor
Bernd Dr. Gellert
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.)
ABB Asea Brown Boveri Ltd
Heraeus Noblelight GmbH
ABB AB
Original Assignee
ABB Asea Brown Boveri Ltd
Heraeus Noblelight GmbH
Asea Brown Boveri AB
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 ABB Asea Brown Boveri Ltd, Heraeus Noblelight GmbH, Asea Brown Boveri AB filed Critical ABB Asea Brown Boveri Ltd
Priority to EP91108604A priority Critical patent/EP0515711A1/fr
Priority to CA 2068588 priority patent/CA2068588A1/fr
Priority to JP13484092A priority patent/JPH05174792A/ja
Publication of EP0515711A1 publication Critical patent/EP0515711A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • 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

Definitions

  • the invention relates to a high-power radiator, in particular for ultraviolet light, with a discharge space filled with filling gas emitting radiation under discharge conditions, the walls of which are formed by a first and a second dielectric, which have metallic grid-like or mesh-like first ones on their surfaces facing away from the discharge space and second electrodes is provided with an AC power source connected to the first and second electrodes for supplying the discharge.
  • the invention relates to a state of the art, as can be seen for example from EP-A 0254 111.
  • UV sources The industrial use of photochemical processes depends heavily on the availability of suitable UV sources.
  • the classic UV lamps deliver low to medium UV intensities at some discrete wavelengths, such as the low-pressure mercury lamps at 185 nm and especially at 254 nm.
  • Really high UV powers can only be obtained from high-pressure lamps (Xe, Hg), which then but distribute their radiation over a larger wavelength range.
  • the new excimer lasers have provided some new wavelengths for basic photochemical experiments. for cost reasons for an industrial process is probably only suitable in exceptional cases.
  • the object of the invention is to create a high-power radiator, in particular for UV or VUV radiation, the electrodes of which are optimally protected against environmental influences in addition to high UV transmission.
  • At least the first electrodes are provided with a protective layer or are embedded in one.
  • Particularly suitable as coating or embedding material are dielectric materials which make good contact with the dielectric of the radiator and at the same time are easy to apply. If materials are used that are UV-curing, they can be cured extremely quickly by the emitter itself.
  • the UV high-power radiator shown schematically in FIG. 1 consists of an outer dielectric tube 1, for example made of quartz glass, and an inner dielectric tube 2 arranged concentrically therewith, the inner wall of which is provided with an inner electrode 3.
  • the annular space between the two tubes 1 and 2 forms the discharge space 4 of the radiator.
  • the inner tube 2 is inserted gas-tight in the outer tube 1, which was previously filled with a gas or gas mixture which emits UV or VUV radiation under the influence of silent electrical discharges.
  • a metal net or metal grid, which extends over the entire circumference of the outer tube 1, serves as the outer electrode 5.
  • Both the outer electrode 5 and the outer dielectric tube 1 are transparent to the UV radiation generated.
  • the electrodes 3 and 5 are led to the two poles of an AC power source 6.
  • the AC power source basically corresponds to those used to feed ozone generators. It typically delivers an adjustable AC voltage in the order of magnitude of several 100 volts to 20,000 volts at frequencies in the range of technical alternating current up to a few 1000 kHz - depending on the electrode geometry, pressure in the discharge space 4 and the composition of the filling gas.
  • the fill gas is e.g. Mercury, noble gas, noble gas-metal vapor mixture, noble gas-halogen mixture, optionally using an additional further noble gas, preferably Ar, He, Ne, as a buffer gas.
  • a substance / substance mixture according to the following table can be used: Filling gas radiation helium 60-100 nm neon 80 - 90 nm argon 107 - 165 nm Argon + fluorine 180-200 nm Argon + chlorine 165-190 nm Argon + krypton + chlorine 165-190, 200-240 nm xenon 160-190 nm nitrogen 337 - 415 nm krypton 124, 140-160 nm Krypton + fluorine 240 - 255 nm Krypton + chlorine 200-240 nm mercury 185, 254, 320-370, 390-420 nm selenium 196, 204, 206 nm deuterium 150-250 nm Xenon + fluorine 340 - 360 nm, 400 - 550 nm Xenon + chlorine 300-320 nm
  • the electron energy distribution can be optimally adjusted by the thickness of the dielectrics and their properties, pressure and / or temperature in the discharge space.
  • the individual wires 7 of the outer electrode are provided with a coating 8.
  • this can consist of wire enamel.
  • Such insulated wires with burned-in lacquer are common in transformer construction.
  • the additional voltage increase caused by the paint can be optimized to tension the discharge.
  • not only the wire but also the entire radiator surface is provided with a coating 8a made of clear lacquer.
  • this arrangement reduces the UV lamp output for some wavelengths, it can be manufactured particularly easily by immersing the completely assembled lamp in a lacquer bath, or spraying or painting a lacquer and then curing it. With 308 nm radiation and a typical layer thickness of 1 to 2 ⁇ m, the transmission is more than 80%. UV-curing clear lacquers are preferably used, which can be cured extremely quickly by the emitter itself and in which the transmission improves after the curing due to the chemical conversion.
  • the individual wires 7 of the outer electrode 5 lie in recesses in the outer dielectric tube 1 and are completely in the coating 8b, e.g. a clear coat, embedded.
  • the lacquer layer 8b then alternately has different thicknesses along the radiator surface. Since thin layers of lacquer allow the UV radiation to pass through better than thick ones, a corresponding intensity pattern results. This is advantageous for applications in which an object which is to be irradiated with UV is moved along the surface and should have well-defined exposure pauses.
  • FIG. 5 shows the arrangement of wires completely embedded in a UV-transparent thick-layer potting compound 8c on a smooth outer dielectric tube 1.
  • UV-curing epoxy resins and UV-curing acrylates are described, for example, in the lecture manuscript by Panacol-Elosol GmbH "UV-EPOXIES - New Possibilities with Radiation-Curing Adhesives and Potting Compounds", Haus dertechnik eV Essen, on November 20, 1990.
  • the "carrier" of the potting compound 8c, the outer dielectric tube 1 can be made thinner, in the borderline case even dispensed with if the dielectric properties of the potting compound are adapted to the discharge process.
  • the displacement of the electrodes according to the invention can also be used successfully with area emitters.
  • the outer electrode itself can also be designed differently, for example not in the form of a mesh or lattice, but only consist of parallel strips, which is particularly suitable for an arrangement according to FIG. 3.
  • Metallizations are applied to the outer surface of the dielectric tube 1 and are then provided with a coating using the method described in connection with FIG.
  • Fig. 6 illustrates a section of such a radiator.
  • both dielectric tubes 1, 2 and also the respective electrodes 3, 5 must be transparent to the radiation generated.
  • both the first electrodes 5 and the second electrodes 3 can be optimally protected from chemical and physical attacks in the manner described above.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)
EP91108604A 1991-05-27 1991-05-27 Radiateur à haute puissance Withdrawn EP0515711A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP91108604A EP0515711A1 (fr) 1991-05-27 1991-05-27 Radiateur à haute puissance
CA 2068588 CA2068588A1 (fr) 1991-05-27 1992-05-13 Radiateur de grande puissance
JP13484092A JPH05174792A (ja) 1991-05-27 1992-05-27 高出力ビーム発生器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP91108604A EP0515711A1 (fr) 1991-05-27 1991-05-27 Radiateur à haute puissance

Publications (1)

Publication Number Publication Date
EP0515711A1 true EP0515711A1 (fr) 1992-12-02

Family

ID=8206776

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91108604A Withdrawn EP0515711A1 (fr) 1991-05-27 1991-05-27 Radiateur à haute puissance

Country Status (3)

Country Link
EP (1) EP0515711A1 (fr)
JP (1) JPH05174792A (fr)
CA (1) CA2068588A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9405142U1 (de) * 1994-03-25 1994-06-23 Brand-Erbisdorfer Lichtquellenproduktions- und Vertriebsgesellschaft mbH, 09618 Brand-Erbisdorf Transmitter zum Einbringen elektrischer Energie in Gasentladungslampen
DE19843419A1 (de) * 1998-09-22 2000-03-23 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Entladungslampe mit dielektrisch behinderten Elektroden

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6727649B1 (en) 1999-11-10 2004-04-27 Harison Toshiba Lighting Corporation Fluorescent lamp, discharge lamp and liquid crystal backlight device incorporating this
KR20070034461A (ko) * 2004-04-08 2007-03-28 센 엔지니어링 가부시키가이샤 유전체 배리어 방전 엑시머 광원
CN102067276B (zh) * 2008-06-19 2012-11-28 北京天洋浦泰投资咨询有限公司 线圈电极荧光放电灯管
ES2893247B2 (es) * 2020-07-28 2023-07-28 Oozbein Biohigiene Sl Bombilla generadora de ozono

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1626159A1 (de) * 1966-09-16 1971-03-11 Gen Electric Vakuumkammer mit einer Metall-Wandflaeche und einem einen Fluessigkeitskanal bildenden Metallkoerper
US4279590A (en) * 1976-06-23 1981-07-21 Gte Products Corporation Lamp with protective coating and method of applying same
EP0076648A2 (fr) * 1981-10-01 1983-04-13 GTE Laboratories Incorporated Source lumineuse fluorescente sans électrode
GB2133612A (en) * 1982-12-29 1984-07-25 Philips Nv Gas and/or vapour discharge lamp
FR2613129A1 (fr) * 1987-03-28 1988-09-30 Toshiba Kk Lampe a decharge dans un gaz
EP0363832A1 (fr) * 1988-10-10 1990-04-18 Heraeus Noblelight GmbH Dispositif de rayonnement à haute puissance
EP0254111B1 (fr) * 1986-07-22 1992-01-02 BBC Brown Boveri AG Dispositif de rayonnement ultraviolet

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62262361A (ja) * 1986-05-07 1987-11-14 Canon Inc 平面型光源装置
CH675178A5 (fr) * 1987-10-23 1990-08-31 Bbc Brown Boveri & Cie

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1626159A1 (de) * 1966-09-16 1971-03-11 Gen Electric Vakuumkammer mit einer Metall-Wandflaeche und einem einen Fluessigkeitskanal bildenden Metallkoerper
US4279590A (en) * 1976-06-23 1981-07-21 Gte Products Corporation Lamp with protective coating and method of applying same
EP0076648A2 (fr) * 1981-10-01 1983-04-13 GTE Laboratories Incorporated Source lumineuse fluorescente sans électrode
GB2133612A (en) * 1982-12-29 1984-07-25 Philips Nv Gas and/or vapour discharge lamp
EP0254111B1 (fr) * 1986-07-22 1992-01-02 BBC Brown Boveri AG Dispositif de rayonnement ultraviolet
FR2613129A1 (fr) * 1987-03-28 1988-09-30 Toshiba Kk Lampe a decharge dans un gaz
EP0363832A1 (fr) * 1988-10-10 1990-04-18 Heraeus Noblelight GmbH Dispositif de rayonnement à haute puissance

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9405142U1 (de) * 1994-03-25 1994-06-23 Brand-Erbisdorfer Lichtquellenproduktions- und Vertriebsgesellschaft mbH, 09618 Brand-Erbisdorf Transmitter zum Einbringen elektrischer Energie in Gasentladungslampen
DE19843419A1 (de) * 1998-09-22 2000-03-23 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Entladungslampe mit dielektrisch behinderten Elektroden

Also Published As

Publication number Publication date
CA2068588A1 (fr) 1992-11-28
JPH05174792A (ja) 1993-07-13

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