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WO2001024225A1 - Lampe a decharge sans electrodes - Google Patents

Lampe a decharge sans electrodes Download PDF

Info

Publication number
WO2001024225A1
WO2001024225A1 PCT/EP2000/009251 EP0009251W WO0124225A1 WO 2001024225 A1 WO2001024225 A1 WO 2001024225A1 EP 0009251 W EP0009251 W EP 0009251W WO 0124225 A1 WO0124225 A1 WO 0124225A1
Authority
WO
WIPO (PCT)
Prior art keywords
discharge
discharge lamp
vessel
discharge vessel
lamp 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.)
Ceased
Application number
PCT/EP2000/009251
Other languages
German (de)
English (en)
Inventor
Erich Arnold
Franz Schilling
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.)
Excelitas Noblelight GmbH
Original Assignee
Heraeus Noblelight GmbH
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 Heraeus Noblelight GmbH filed Critical Heraeus Noblelight GmbH
Priority to EP00964221A priority Critical patent/EP1218923A1/fr
Priority to CA002384245A priority patent/CA2384245A1/fr
Publication of WO2001024225A1 publication Critical patent/WO2001024225A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • H01J65/048—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 an excitation coil
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/30—Treatment of water, waste water, or sewage by irradiation
    • C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light

Definitions

  • the invention relates to an electrodeless discharge lamp which has at least one annularly closed discharge path in its discharge vessel, the discharge path being surrounded at least at one point by a circle made of magnetic material for coupling in electromagnetic energy
  • EP 0 910 112 A2 discloses an electrodeless discharge lamp with a discharge vessel designed as a closed tube, which contains full material for forming a low-pressure discharge.
  • the electrodeless lamp also has amalgam located within the discharge vessel.
  • the discharge vessel is of a ring-like shape in the area of its outer surface
  • the discharge vessel which is designed as a closed tube, forms a type of secondary winding, while a P ⁇ mar winding surrounding the transformer core is fed by a high-frequency generator with a frequency in the range from 100 to 400 kHz
  • amalgam located in the discharge vessel is by means of a thermal bridging between the transformer core and the amalgam is heated during lamp operation
  • a discharge lamp with a tubular discharge vessel is known from US 3,500,118, which is used as a translucent vessel in the form of a closed loop or in the form of an "eight".
  • ferrite cores are provided which surround the discharge vessel and which are wound by primary windings for the purpose of decoupling an electromagnetic field
  • the invention is based on the object of achieving an improvement in the ignitability for a given ignition device with the simplest possible means, and also improved ignition and operating properties an increased spot length or a reduced tube diameter can be achieved
  • a tubular intermediate piece is arranged between two opposite wall regions of the annular discharge path of the discharge vessel, the ends of which are each connected to the inside of the discharge vessel in such a way that a discharge vessel is formed which is hermetically sealed from the environment
  • two transformer cores each comprising the discharge vessel, are arranged as circles made of magnetic material in the opposite wall region of the discharge gap, which in turn are surrounded by an electrical winding serving as the p ⁇ mar side and generate magnetic field lines flowing through the intermediate piece of the discharge lamp , which overlap, preferably the transformer cores are arranged opposite one another
  • radiators with larger discharge distances can now also be ignited safely.
  • the preferred wavelength of the UV radiation is 253.7 nm
  • the annular discharge path is surrounded by two opposing closed magnetic circuits made of ferrite material
  • the magnetic circuit has a U-shaped component made of ferrite which comprises the annular discharge path and whose open side is closed by a yoke made of ferrite
  • the magnetic circuit is provided with a P ⁇ mar winding consisting of several turns, the winding being connected to a high-frequency generator.
  • the operating frequency is preferably in the range from 100 kHz to 400 kHz
  • the discharge vessel is preferably made of quartz glass
  • Figure 1 shows schematically a longitudinal section through the bulb of the discharge lamp together with the ferrite cores (transformer cores), of which a first is also shown in section, while the second is shown with the yoke closed lying U-shaped part shown
  • FIG. 2 shows a plan view of the lamp bulb, the connection of the intermediate piece to the annular part of the discharge vessel being recognizable; the magnetic circuits of the ferrite cores are each closed by the yoke visible from above
  • the discharge vessel 1 has an annular circumferential tubular discharge space which contains an intermediate piece 2 in the form of a central tube in its central part, the intermediate piece 2 being connected together with the annular circumferential part 3 of the discharge vessel in such a way that one is hermetic to the environment a closed vessel is defined here as a “ring-shaped” or “ring shape”, a self-contained discharge path which does not necessarily have to have a geometric ring shape or a circular shape in the form of an oval loop, while when an intermediate piece is used, the outer closed discharge path is divided into two discharge paths leading through the intermediate piece
  • annular circumferential part 3 together with the middle tube as an intermediate piece 2, forms a geometric figure which appears in the top view as the number "eight".
  • annular circumferential part 3 together with the middle tube as an intermediate piece 2 forms a geometric figure which appears in the top view as the number "eight".
  • ferrite cores 5 6 on opposite parts, each comprising the proportion of the outer surface of the ring-shaped part 3 in such a way that magnetic field lines are coupled into the discharge vessel 1 along an imaginary tube axis of the ring-shaped part 3
  • the ferrite cores consist of a U-shaped part, in each of which a part 7, 8 of the discharge vessel is embedded, the magnetic circuit being closed by placing a magnetic yoke made of ferrite on the upward-facing ends of the U-shaped part.
  • the cores 5 , 6 each have a P ⁇ mar winding 9, 10 as an excitation winding.
  • the field lines induced in the vessel each form a closed loop, the coupling being carried out in such a way that the field lines of the two parts overlap together in the middle tube as an intermediate piece 2 due to the fact that in the intermediate piece 2 coupled high intensity of the electromagnetic en energy results in a greatly improved ability to ignite
  • FIG. 2 shows a top view of a practical embodiment of the discharge lamp, in which the connection of the intermediate piece 2 to the annular part 3 of the discharge vessel 1 can be seen by means of the connecting regions 11, 12. Furthermore, the opposite parts 7, 8 are closed as magnetic Circles the ferrite cores 5, 6 and the connections for the respective P ⁇ mar windings 9 and 10 can be seen
  • the inside diameter of the annular part 3 designed as a tube is between 30 and 45 mm and that of the intermediate piece 2 in the range of 15 to 30 mm, while the length of the discharge vessel 1 is between 400 and 600 mm and the width is within Range from 110 to 130 mm
  • the filling of the discharge vessel consists of: mercury or an amalgam, krypton or argon as the ignition gas, the cold filling pressure being in the range from 01. mbar to 1 mbar.
  • the windings 9, 10 are connected to a high-frequency power supply, not shown here, which preferably operates in a frequency range from 50 kHz to approximately 600 kHz, a frequency of 100 kHz to 400 kHz being particularly suitable for lamp operation has proven.
  • the power coupled in is in the range from 300 to 800 W. If the inside diameter of the intermediate piece 2 is selected to be suitably small, the lamp ignites reliably but then only burns in the outer ring of the discharge vessel.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)
  • Physical Water Treatments (AREA)

Abstract

Lampe à décharge sans électrodes présentant dans son enceinte de décharge, au moins un parcours de décharge fermé de forme annulaire, le parcours de décharge étant entouré en deux emplacements opposés, respectivement, par un noyau de transformateur pour l'injection d'énergie électromagnétique ; entre deux zones de parois opposées du parcours annulaire de décharge de l'enceinte de décharge, il est prévu une pièce intermédiaire de forme tubulaire dont les extrémités sont reliées chacune avec l'intérieur de ladite enceinte, de manière à former une enceinte isolée hermétiquement de l'environnement. Les noyaux de transformateur opposés génèrent chacun des lignes de champ magnétique s'interférant et s'écoulant à travers la pièce intermédiaire. L'intensité élevée d'énergie électromagnétique injectée dans la pièce intermédiaire permet d'obtenir une capacité d'amorçage améliorée. L'utilisation concerne notamment le rayonnement aux U.V. en vue de la stérilisation de l'eau, de l'air et des surfaces.
PCT/EP2000/009251 1999-09-27 2000-09-21 Lampe a decharge sans electrodes Ceased WO2001024225A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP00964221A EP1218923A1 (fr) 1999-09-27 2000-09-21 Lampe a decharge sans electrodes
CA002384245A CA2384245A1 (fr) 1999-09-27 2000-09-21 Lampe a decharge sans electrodes

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19946274.7 1999-09-27
DE1999146274 DE19946274C2 (de) 1999-09-27 1999-09-27 Elektrodenlose Entladungslampe und deren Verwendung

Publications (1)

Publication Number Publication Date
WO2001024225A1 true WO2001024225A1 (fr) 2001-04-05

Family

ID=7923467

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2000/009251 Ceased WO2001024225A1 (fr) 1999-09-27 2000-09-21 Lampe a decharge sans electrodes

Country Status (4)

Country Link
EP (1) EP1218923A1 (fr)
CA (1) CA2384245A1 (fr)
DE (1) DE19946274C2 (fr)
WO (1) WO2001024225A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002030828A3 (fr) * 2000-10-12 2003-01-16 Photoscience Japan Corp Ensemble d'epuration d'eau
CN102269356A (zh) * 2011-05-08 2011-12-07 广州倬粤能源有限公司 一种全泡形无极灯

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3500118A (en) * 1967-07-17 1970-03-10 Gen Electric Electrodeless gaseous electric discharge devices utilizing ferrite cores
US4298828A (en) * 1979-02-21 1981-11-03 Westinghouse Electric Corp. High frequency electrodeless lamp having a gapped magnetic core and method
EP0607633A1 (fr) * 1992-12-23 1994-07-27 Koninklijke Philips Electronics N.V. Lampe à décharge basse pression sans électrode
US5381073A (en) * 1992-10-16 1995-01-10 Gte Products Corporation Capacitively coupled RF fluorescent lamp with RF magnetic enhancement
DE19613468A1 (de) * 1995-04-05 1996-10-10 Wedeco Umwelttechnologie Wasser Boden Luft Gmbh Quecksilber-Niederdruckentladungslampe
EP0910112A2 (fr) * 1997-10-14 1999-04-21 Osram Sylvania Inc. Lampe sans électrode interne comportant un pont thermique entre le noyau du transformateur et l'amalgame

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3987334A (en) * 1975-01-20 1976-10-19 General Electric Company Integrally ballasted electrodeless fluorescent lamp
US4180763A (en) * 1978-01-25 1979-12-25 General Electric Company High intensity discharge lamp geometries
US5717290A (en) * 1996-09-26 1998-02-10 Osram Sylvania Inc. Starting flag structure for tubular low pressure discharge lamps

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3500118A (en) * 1967-07-17 1970-03-10 Gen Electric Electrodeless gaseous electric discharge devices utilizing ferrite cores
US4298828A (en) * 1979-02-21 1981-11-03 Westinghouse Electric Corp. High frequency electrodeless lamp having a gapped magnetic core and method
US5381073A (en) * 1992-10-16 1995-01-10 Gte Products Corporation Capacitively coupled RF fluorescent lamp with RF magnetic enhancement
EP0607633A1 (fr) * 1992-12-23 1994-07-27 Koninklijke Philips Electronics N.V. Lampe à décharge basse pression sans électrode
DE19613468A1 (de) * 1995-04-05 1996-10-10 Wedeco Umwelttechnologie Wasser Boden Luft Gmbh Quecksilber-Niederdruckentladungslampe
EP0910112A2 (fr) * 1997-10-14 1999-04-21 Osram Sylvania Inc. Lampe sans électrode interne comportant un pont thermique entre le noyau du transformateur et l'amalgame

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SHAFFER J W ET AL: "THE DEVELOPMENT OF LOW FREQUENCY, HIGH OUTPUT ELECTRODELESS FLUORESCENT LAMPS", JOURNAL OF THE ILLUMINATING ENGINEERING SOCIETY,US,ILLUMINATING ENGINEERING SOCIETY. NEW YORK, vol. 28, no. 1, 21 December 1998 (1998-12-21), pages 142 - 148, XP000801986, ISSN: 0099-4480 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002030828A3 (fr) * 2000-10-12 2003-01-16 Photoscience Japan Corp Ensemble d'epuration d'eau
CN102269356A (zh) * 2011-05-08 2011-12-07 广州倬粤能源有限公司 一种全泡形无极灯

Also Published As

Publication number Publication date
DE19946274C2 (de) 2003-04-17
EP1218923A1 (fr) 2002-07-03
CA2384245A1 (fr) 2001-04-05
DE19946274A1 (de) 2001-04-19

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