EP0459127A1 - Dispositif de rayonnement à haute puissance avec source d'alimentation - Google Patents

Dispositif de rayonnement à haute puissance avec source d'alimentation Download PDF

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Publication number
EP0459127A1
EP0459127A1 EP91106024A EP91106024A EP0459127A1 EP 0459127 A1 EP0459127 A1 EP 0459127A1 EP 91106024 A EP91106024 A EP 91106024A EP 91106024 A EP91106024 A EP 91106024A EP 0459127 A1 EP0459127 A1 EP 0459127A1
Authority
EP
European Patent Office
Prior art keywords
radiator
power
power supply
converter
frequency
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Withdrawn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
EP91106024A
Other languages
German (de)
English (en)
Inventor
Ulrich Dr. Kogelschatz
Thomas Müller
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
ABB AB
Original Assignee
ABB Asea Brown Boveri Ltd
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, Asea Brown Boveri AB filed Critical ABB Asea Brown Boveri Ltd
Publication of EP0459127A1 publication Critical patent/EP0459127A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/24—Circuit arrangements in which the lamp is fed by high frequency ac, or with separate oscillator frequency

Definitions

  • the invention relates to a high-power radiator with a discharge space, which is at least bounded on one side by a dielectric, which is filled with a gas which emits radiation under discharge conditions, and a power supply device for supplying the discharge.
  • the increasing use of high-performance emitters for exposure, coating and drying processes requires powerful, yet economical power supplies for feeding the discharge.
  • the previous power supply facilities used those that have long been known to ozone generators. Apart from the ozonizers operated at mains frequency, these consist of a converter with controllable frequency, amplitude and / or curve shape of the converter output voltage and a complex high-voltage transformer at the converter output. It has the task of raising the output voltage of the converter, which is at most a few kV, to values that are sufficient to keep the discharge going or to ignite it in the first place.
  • the power supply devices of high power radiators place similar demands on the frequency and amplitude of the voltage supplying the discharge, the operating frequency can be much higher than with an ozonizer. Examples of such radiators can be found in EP-A-0254 111 ... However, the voltage level can be lower, but is regularly above the values (typically around 5 kVolt) that a technically and economically designed converter can deliver able.
  • the object of the invention is to provide a high-power radiator with a power supply device which does not require a complex converter and without a high-voltage transformer.
  • the radiator is connected directly to the converter output with the interposition of an inductor, and this inductance is dimensioned such that it forms a series resonant circuit together with the radiator, which essentially represents a capacitive load, which approximately corresponds to its resonant frequency is coordinated so that a voltage increase of at least 5 occurs at the electrodes of the radiator.
  • the radiator represents by connecting an additional capacitance in parallel.
  • This additional capacity which in principle only the capacity of the extinguished radiator is increased and at the same time serves as an energy store for the ignition phase of the radiator.
  • the frequency of the feeding current or the series inductance could also be changed after the emitter has been ignited.
  • a UV high-power radiator is generally designated by the reference number 1 and the associated power supply device by 2.
  • This power supply device hereinafter generally referred to as "converter”
  • the radiator 1 essentially consists of a closed discharge space 3 which is filled with a gas or gas mixture which emits UV radiation under discharge conditions. Examples of such filling gases are listed in the patent document mentioned at the beginning.
  • the discharge space 3 is delimited on both sides by UV-permeable dielectrics 4 and 5, for example made of quartz glass, to which outer, UV-transparent electrodes 6 and 7 are applied.
  • the electrode 7 is direct, the electrode 6 is connected via an inductor 8 to the two connections of the converter 2.
  • An additional capacitance 9 can be connected in parallel to the radiator 1.
  • FIG. 2 and 3 illustrate the influence of the frequency on the voltage increase (Fig. 2) or the power factor (Fig. 3) for a radiator that was fed from a frequency generator with a downstream power amplifier with a voltage of 130 V eff and had a discharge gap of 3 mm and quartz dielectrics 4 and 5, each 1.5 mm thick, with a dielectric constant of 3.7.
  • Curves A represent the theoretical course
  • curves B the measured course.

Landscapes

  • Oxygen, Ozone, And Oxides In General (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
EP91106024A 1990-04-24 1991-04-15 Dispositif de rayonnement à haute puissance avec source d'alimentation Withdrawn EP0459127A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1381/90 1990-04-24
CH1381/90A CH680246A5 (fr) 1990-04-24 1990-04-24

Publications (1)

Publication Number Publication Date
EP0459127A1 true EP0459127A1 (fr) 1991-12-04

Family

ID=4209102

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91106024A Withdrawn EP0459127A1 (fr) 1990-04-24 1991-04-15 Dispositif de rayonnement à haute puissance avec source d'alimentation

Country Status (3)

Country Link
EP (1) EP0459127A1 (fr)
JP (1) JPH04230951A (fr)
CH (1) CH680246A5 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1932168A2 (fr) * 2005-10-04 2008-06-18 Topanga Technologies Lampe a plasma sans electrode a resonateur/cavite externe et son procede d'excitation au moyen d'energie radiofrequence

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10342337A1 (de) * 2003-09-11 2005-05-04 Heraeus Noblelight Gmbh Entladungslampe zur Erzeugung von UV-Strahlung sowie deren Verwendung

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB515077A (en) * 1938-06-07 1939-11-24 Richard Huddelson Seaman Supply system for electric discharge lamps
US2832009A (en) * 1955-01-11 1958-04-22 Triflux Soc Glow discharge systems
FR1337408A (fr) * 1962-07-31 1963-09-13 Ile Soc Civ Système stabilisateur de fréquences
US4358712A (en) * 1980-12-29 1982-11-09 Altex Scientific, Inc. Discharge lamp ballast
GB2163014A (en) * 1984-08-06 1986-02-12 Gen Electric Ballast circuits for fluorescent lamps
GB2204751A (en) * 1987-04-22 1988-11-16 Davis Group Ltd Discharge lamp circuits
EP0336642A1 (fr) * 1988-04-05 1989-10-11 Neon Dynamics Corporation Alimentation pour tubes à décharge dans un gaz
US4914558A (en) * 1989-03-06 1990-04-03 Jon Flickinger Series resonant inverter and method of lamp starting
EP0254111B1 (fr) * 1986-07-22 1992-01-02 BBC Brown Boveri AG Dispositif de rayonnement ultraviolet

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB515077A (en) * 1938-06-07 1939-11-24 Richard Huddelson Seaman Supply system for electric discharge lamps
US2832009A (en) * 1955-01-11 1958-04-22 Triflux Soc Glow discharge systems
FR1337408A (fr) * 1962-07-31 1963-09-13 Ile Soc Civ Système stabilisateur de fréquences
US4358712A (en) * 1980-12-29 1982-11-09 Altex Scientific, Inc. Discharge lamp ballast
GB2163014A (en) * 1984-08-06 1986-02-12 Gen Electric Ballast circuits for fluorescent lamps
EP0254111B1 (fr) * 1986-07-22 1992-01-02 BBC Brown Boveri AG Dispositif de rayonnement ultraviolet
GB2204751A (en) * 1987-04-22 1988-11-16 Davis Group Ltd Discharge lamp circuits
EP0336642A1 (fr) * 1988-04-05 1989-10-11 Neon Dynamics Corporation Alimentation pour tubes à décharge dans un gaz
US4914558A (en) * 1989-03-06 1990-04-03 Jon Flickinger Series resonant inverter and method of lamp starting

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1932168A2 (fr) * 2005-10-04 2008-06-18 Topanga Technologies Lampe a plasma sans electrode a resonateur/cavite externe et son procede d'excitation au moyen d'energie radiofrequence

Also Published As

Publication number Publication date
JPH04230951A (ja) 1992-08-19
CH680246A5 (fr) 1992-07-15

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