EP0079849A2 - Lampe à vapeur à basse pression - Google Patents

Lampe à vapeur à basse pression Download PDF

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Publication number
EP0079849A2
EP0079849A2 EP82730134A EP82730134A EP0079849A2 EP 0079849 A2 EP0079849 A2 EP 0079849A2 EP 82730134 A EP82730134 A EP 82730134A EP 82730134 A EP82730134 A EP 82730134A EP 0079849 A2 EP0079849 A2 EP 0079849A2
Authority
EP
European Patent Office
Prior art keywords
burner
cladding tube
low
flat burner
flat
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
EP82730134A
Other languages
German (de)
English (en)
Other versions
EP0079849A3 (en
EP0079849B1 (fr
Inventor
Georg Horstmann
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT82730134T priority Critical patent/ATE26769T1/de
Publication of EP0079849A2 publication Critical patent/EP0079849A2/fr
Publication of EP0079849A3 publication Critical patent/EP0079849A3/de
Application granted granted Critical
Publication of EP0079849B1 publication Critical patent/EP0079849B1/fr
Expired 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
    • H01J61/52—Cooling arrangements; Heating arrangements; Means for circulating gas or vapour within the discharge space
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/70—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr

Definitions

  • the invention relates to a low-pressure vapor lamp, especially mercury low-pressure vapor lamp with mixed burner as F formed lamp tube, which is surrounded by a cladding tube.
  • low-pressure steam lamps of this type usually consist of a quartz tube filled with metal vapor with a vapor pressure of, for example, 0.1 Torr, with two electrodes at the ends, the lamp tube being designed with an oblong-flat cross section, for which reason the term "flat-burner" is also used.
  • Low-pressure vapor lamps have a very large proportion of low-pressure mercury lamps because they are very suitable devices for generating UV radiation.
  • the light they emit is namely a pure line spectrum, which has a high UV component and has a particularly strong line at 254 nm.
  • the flat burner is usually surrounded by a jacket tube also made of quartz, and the burner arrangement consisting of jacket tube and flat burner can then be immersed in water to be sterilized.
  • the cladding tube is designed as a round tube because it provides optimal protection against the surrounding water pressure.
  • the flat burner itself located in the cladding tube can therefore be built relatively thin-walled.
  • the flat burner also produces a line spectrum - albeit not as intense - with 183 nm, which can be used to generate ozone that supports the sterilization and sterilization process.
  • the invention is therefore based on the object, while avoiding the disadvantages described, of creating a low-pressure vapor lamp in which an increase in the radiation intensity is possible with simple means.
  • the invention achieves this goal in an astonishingly simple manner in that the flat burner is at least partially in contact with the inner wall of the cladding tube.
  • the invention is based on the surprising finding that, by touching the flat burner with the cladding tube, cooling can take place through the medium surrounding the cladding tube and to be sterilized or sterilized. As has been found in experiments, this so-called "contact cooling” can achieve a considerable increase in the radiation intensity. This is all the more surprising since both the cladding tube and the jacket of the flat burner each consist of quartz - a poor heat conductor. The gas in the flat burner obviously cools at the points of contact of the Flat burner with the cladding tube so far that a higher energy supply and thus a higher emitted radiation intensity is possible.
  • the contact is linear in the direction of the longitudinal axes of the flat burner and the cladding tube, so that there is practically a contact line along the surface of the flat burner.
  • a linear contact with the cladding tube cannot always be realized for manufacturing reasons, since both the inside wall of the cladding tube and the outside wall of the flat burner may have slight unevenness.
  • the contact is limited to a large number of discrete points of contact. But here too, tests have led to the astonishing result that even then there is sufficient contact cooling, so that one can do without the complex external cooling.
  • the flat burner is provided with several sleeves, which are arranged around the outer wall and brought into contact with the cladding tube.
  • the flat burner is arranged to be displaceable transversely to its longitudinal axis within the cladding tube and can be fixed in different positions. In its one position - transport position - the flat burner is located in the middle in a known manner inside the cladding tube, so that contact with the cladding tube is avoided. After transport and commissioning, the flat burner is then moved to the other position and fixed where it is in the desired contact with the cladding tube.
  • the novel contact cooling created by the invention can be so effective that when switching on the low pressure lamp u.
  • the optimal operating temperature of the gas in the flat burner may not be reached. Therefore, a further expedient embodiment of the invention provides the possibility of not allowing the desired contact cooling to take effect until a certain temperature has been reached.
  • a bimetal can be used which, when a predetermined temperature value is reached, causes the flat burner to be moved into a position in which the flat burner is in contact with the cladding tube.
  • the low pressure lamp 1 shown in the drawing comprises a flat burner 2 with an elongated flat cross section.
  • the flat burner 2 the outer wall of which is made of quartz, is surrounded in the usual way by a round cladding tube 4 - also made of quartz.
  • a reaction chamber 28 adjoins the cladding tube (see FIG. 3), which receives the medium, for example water, which is to be subjected to UV radiation for the purpose of disinfection and sterilization.
  • the medium for example water
  • FIG. 3 a total of four cladding tubes 4, each at an angle of 90 ° to one another, with flat burners 2 located therein are provided, two of which can be seen in the cross-sectional illustration.
  • a sensor 18 for the UV radiation occurring at this point.
  • the reactor 30, which is constructed in a manner known per se, has a cover 32 and a housing 40.
  • the cladding tubes 4 are held within a flange 34 which is connected to a flange ring 36 via a screw connection 38. Seals 24 and 26 are provided for sealing the reaction space 28.
  • each flat burner 2 has at its outer ends a base 20 with electrodes 22 for the flat burner 2 (in the figures only one end of the flat burner 2 is in each case) shown, so that only one base 20 'can be seen in each case).
  • the flat burners 2 located within the cladding tubes 4 are now held over a disk-shaped burner holder 10, which is arranged at the two ends of the cladding tube 4.
  • the flat burner 2 is connected to the two burner holders 10 at the outer ends via the electrodes 2 which engage in corresponding openings in the burner holder 10.
  • the burner holder 10 - and thus, of course, the flat burner 2 connected to them - can be displaced both to the left and to the right in a direction indicated by the arrow 12.
  • the direction of displacement is preferably selected transversely to the direction in which the flat burner 2 extends with its elongated cross section.
  • the burner holders 10 are each provided with two elongated holes 14 which extend in the direction of the arrow 12.
  • a pin 16 engages in each elongated hole 14, as a result of which clear guidance is achieved during the displacement of the burner holder 10.
  • two different end positions of the burner holder 10 are marked by the pins 16 which are arranged in a fixed position relative to the burner holders 10, namely when the pins 16 are located at one end or at the other end of the elongated hole.
  • the burner holder 10 can be fixed in the two end positions by screws, not shown, so that the flat burner is also firmly held in the two different positions.
  • the burner holder 10 is in a first fixed position, to which a central arrangement of the flat burner 2 within the tube 4 is assigned.
  • transport can also be carried out without any problems, since the flat burner 2 is not in contact with the tubular tube 4.
  • the length of the elongated holes 14 is chosen taking into account the diameter of the pins 16 so that - starting from the position in FIG. 1 - when the burner holder 10 is moved in the direction of the arrow 12, the flat burner 2 comes into contact with the cladding tube 4, without causing damage.
  • the flat burner 2 is surrounded by sleeves 42 arranged at a distance from one another.
  • the flat burner 2 can be shifted so far by means of the burner holder 10 that the sleeves 42 rest against the inner wall of the cladding tube 4, which then also results in the desired contact cooling.

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Eye Examination Apparatus (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
  • Display Devices Of Pinball Game Machines (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)
EP82730134A 1981-11-12 1982-11-10 Lampe à vapeur à basse pression Expired EP0079849B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82730134T ATE26769T1 (de) 1981-11-12 1982-11-10 Niederdruckdampflampe.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813144925 DE3144925A1 (de) 1981-11-12 1981-11-12 Niederdruckdampflampe
DE3144925 1981-11-12

Publications (3)

Publication Number Publication Date
EP0079849A2 true EP0079849A2 (fr) 1983-05-25
EP0079849A3 EP0079849A3 (en) 1984-04-25
EP0079849B1 EP0079849B1 (fr) 1987-04-22

Family

ID=6146215

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82730134A Expired EP0079849B1 (fr) 1981-11-12 1982-11-10 Lampe à vapeur à basse pression

Country Status (4)

Country Link
EP (1) EP0079849B1 (fr)
AT (1) ATE26769T1 (fr)
CA (1) CA1205508A (fr)
DE (2) DE3144925A1 (fr)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4071799A (en) * 1977-04-01 1978-01-31 Xerox Corporation Sodium vapor lamp with emission aperture
DE2825018C2 (de) * 1978-06-05 1986-07-24 Georg 4902 Bad Salzuflen Horstmann Quecksilberdampf-Niederdrucklampe

Also Published As

Publication number Publication date
EP0079849A3 (en) 1984-04-25
DE3276144D1 (en) 1987-05-27
ATE26769T1 (de) 1987-05-15
CA1205508A (fr) 1986-06-03
DE3144925A1 (de) 1983-06-16
EP0079849B1 (fr) 1987-04-22

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