EP2122666B1 - Emetteur a rayons infrarouges a reflecteur opaque et mode de production correspondant - Google Patents

Emetteur a rayons infrarouges a reflecteur opaque et mode de production correspondant Download PDF

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Publication number
EP2122666B1
EP2122666B1 EP08715655.0A EP08715655A EP2122666B1 EP 2122666 B1 EP2122666 B1 EP 2122666B1 EP 08715655 A EP08715655 A EP 08715655A EP 2122666 B1 EP2122666 B1 EP 2122666B1
Authority
EP
European Patent Office
Prior art keywords
burners
tube
reflector
reflector layer
quartz glass
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.)
Not-in-force
Application number
EP08715655.0A
Other languages
German (de)
English (en)
Other versions
EP2122666A2 (fr
Inventor
Volker Reith
Sven Linow
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.)
Heraeus 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 PL08715655T priority Critical patent/PL2122666T3/pl
Publication of EP2122666A2 publication Critical patent/EP2122666A2/fr
Application granted granted Critical
Publication of EP2122666B1 publication Critical patent/EP2122666B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof
    • H01K3/005—Methods for coating the surface of the envelope
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/28—Envelopes; Vessels
    • H01K1/32—Envelopes; Vessels provided with coatings on the walls; Vessels or coatings thereon characterised by the material thereof
    • H01K1/325—Reflecting coating
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof
    • H01K3/26—Closing of vessels
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K7/00—Lamps for purposes other than general lighting

Definitions

  • the invention relates to a method for producing an infrared radiator from an endlessly shaped quartz body, wherein on the surface of the body of quartz glass at least partially a reflector layer is applied, and a thus produced infrared radiator.
  • Quartz glass components are used in a variety of applications, such as in lamp manufacturing for cladding, piston cover plates or reflector supports for lamps and radiators in the ultraviolet, infrared and visible spectral range.
  • the quartz glass is doped with other substances to produce special properties.
  • Quartz glass is characterized by a low coefficient of expansion, by optical transparency over a wider wavelength range and by high chemical and thermal resistance.
  • optical radiators are provided with a reflector.
  • the reflector is either firmly connected to the radiator or it is a reflector component arranged separately from the radiator.
  • the US 2,980,820 describes a short-wave infrared radiator.
  • an infrared radiator in which the lamp tube is designed in the form of a so-called twin tube.
  • a quartz glass tube is divided by a longitudinal ridge into two mutually parallel subspaces, wherein in one or both subspaces a heating coil runs.
  • the main radiation direction of the infrared radiation opposite side of the twin tube is covered with a gold layer, which serves as a reflector.
  • This gold layer has a reflectivity of> 95% over the entire infrared in the new state and persists permanently a maximum temperature of 600 ° C, at higher temperatures cause loss of adhesion and evaporation of the gold after a short time to a loss of reflective property.
  • Reflective layers of gold with high reflectivity of over 90% generally have the disadvantage that they are only limited temperature resistance, or of low reflection rate.
  • the DE 10 2004 051 846 A1 describes a quartz glass component with a reflector layer.
  • the reflector layer consists of at least partially opaque quartz glass.
  • process temperatures of 1250 ° and more are needed for the manufacturing process in order to achieve the sintering of the layer.
  • quartz glass softens noticeably.
  • an excess pressure in a quartz container leads to an inflation of the container.
  • IR emitters are usually filled with argon at a pressure of 800 mbar to 1 bar, so that finished emitters would be destroyed safely in the application of the reflector layer.
  • radiators with a reflector layer it is not possible to coat the quartz body or the quartz tube first and then perform the pinch.
  • the reflector can only be applied to the empty radiator tube, since the process temperatures exceed 1250 ° C. Due to the process, the reflector therefore has to be applied to the emitter tube before the spotlight production begins, to the size required later. He must not reach into the area of bruising. This is necessary because the radiator tubes are evenly heated when squeezed with rotating burners. Due to the different amounts of quartz on the front and back of tubes with the reflector layer described either the coated side would not warmed enough to deform them, or the uncoated portion of the tube is heated too much, so that the quartz tube is too viscous and ruptures.
  • Typical incandescent bulbs consist of two opposed gas burners rotating around the quartz tube to be squeezed. If the quartz tube is sufficiently hot for the pinch, the two burners stop in their rest position, so that the two crimping jaws can move past the burners to the quartz tube and compress the quartz glass around the molybdenum foil.
  • the technique of pinching and molybdenum foil is in the DE 29 47 230 A1 shown.
  • Both burners are fed together from one supply line and thus have essentially the same burner output.
  • the contusion can only be triggered when the entire tube is thoroughly warmed up. In this case, however, the part not covered with reflector material has already converged strongly, so that although the radiator can usually be closed, the shape of the pinch is random and insufficient.
  • leaks of pinch are very often observed, which are due to uneven temperature of the glass or heavily deformed tube cross-sections directly before crushing. It could not be produced for a sufficient amount of emitters.
  • the rejection rate is very high, which also increases production costs.
  • radiators are to be produced in large numbers, it may be bearable with regard to the production costs to individually coat the already cut pipe sections with the reflector and to process them only subsequently to radiators.
  • the transition from the coated to the uncoated area then remains almost independent of the application process of inferior quality appearance, since it can not be made cost-effective straight and clear - beads, splashes, cracks, threads, etc. affect the visual impression.
  • the object of the invention is to provide a method by which infrared radiators with opaque reflector in any length and in small series can be produced.
  • the inventive method for producing an infrared radiator from an endless quartz body wherein at least partially a reflector layer is applied to the surface of the body of quartz glass provides that the quartz body is divided into individual sections after application of the reflector layer.
  • This method enables infrared radiators of any length to be manufactured.
  • the infrared radiator thereby has a continuous coating.
  • a SiO 2 layer is applied as the reflector layer.
  • SiO 2 is characterized by excellent chemical and thermal resistance and mechanical strength. Furthermore, SiO 2 has a high thermal shock resistance. In addition, it has proven to be cost effective to apply a reflector layer of SiO 2 .
  • the production of SiO 2 reflector layers of quartz glass is for example in the DE 10 2004 051 846 A1 described, which is hereby fully comprehended.
  • the reflector layer is an opaque, diffusely scattering reflector layer.
  • the inventive method provides that the individual sections of the quartz body are squeezed at their ends by means of at least one burner.
  • the individual sections of the quartz body are heated vertically or horizontally lying with two opposite preferred in the plane perpendicular to the radiator axis and the connection axis between the burners moving burners.
  • the two burners have a different gas flow.
  • This gas flow should be sufficient so that at the same time the entire area of the sections to be crimped is thoroughly heated without heating a part.
  • the internal cavity pressure can be adjusted by means of suitable control of the inert gas flowing through the tube so that the quartz body is not in the deformable region is inflated.
  • the flow speed of the lower flame in the case of horizontal pinching is selected so that the deformable region of the quartz body is experiencing a force counteracting the force of gravity.
  • the invention further provides an infrared radiator, which has been produced by the above-mentioned method.
  • a radiator can be made as required, even after the application of the coating and thus the reflector in a desired length. Thus, such a radiator in any length is conceivable.
  • FIG. 1 The system with eccentrically rotating burners is in FIG. 1 shown.
  • the emitter tube (10) with its half-side applied coating (11) for squeezing is not centric on the axis (20) about which the burners (21, 22) rotate, but with its axis of symmetry (12) added that the coated side is located much closer to the rotating burners, as the uncoated side.
  • the strength of the eccentricity to be selected depends on the ratio of the applied layer to the radiator tube thickness, as well as the properties of the flame, in particular the average temperature field.
  • An enveloping piston squeezing machine with two rotating opposed burners (21, 22) with a torch spacing of 65 mm was rebuilt to crush coated round tubes 13.7 * 1.5 mm with a 1.0 mm reflector layer.
  • the burners have five parallel rows of nozzles on an area of 10 * 30 mm ⁇ 2, from which lean H2 / O2 premix flames flow.
  • the thus forming flame fronts (23) are quite stable, so that even an eccentricity of 5 mm here is sufficient to produce a visually excellent and tight bruise.
  • the tube is squeezed by means of the two crimping jaws (30,31), which on reaching the appropriate quartz glass temperature and when the burners (21, 22) do not stand in the way to drive each other directly. Then fold the two auxiliary jaws (32, 33) towards each other, so that an H-shaped pinch occurs.
  • FIG. 2 A section of a plant with rotating burners is in the FIG. 2 shown.
  • the gas feed was optimized so that both burners are controlled independently of each other and position-dependent.
  • the burner output is increased in the region of the additionally applied reflector layer such that the increase corresponds approximately to the additional mass located there.
  • the rotary burner table (50) was provided with two separate gas supply grooves (51) and (52), from each of which feed lines (53) and (54) to the two burners (55) and (56) go out.
  • the table is driven by a (not shown) motor, which drives the toothed wheels in the circular burner table milled gear (57).
  • the table is mounted in a receptacle (60) which, in addition to the drive mechanism (not shown), also provides the two gas supplies (61) and (62). Through both gas supplies, other gas mixtures or gas quantities can be added independently.
  • the amounts of gas or gas mixtures are via an example in FIG. 3 shown controlled gas control function of the position of the burner table.
  • the tube (10) to be squeezed with the applied reflector layer (11) is arranged so that the Mo film (12) to be squeezed is at the level of the burners.
  • the components of the radiator are thereby e.g. fixed on the tube mounted holder (13) in which the outer molybdenum rod (14) is hooked, while the coil (15) holds inside the radiator on their spring force all components in position.
  • argon is blown through the tube to protect the internal components from oxidation.
  • a circular tube with a diameter of 19 mm and 1.6 mm wall thickness and a coating of 0.8 mm thickness and a density of> 95% of the lamp tube material was applied over 180 ° of the pipe circumference squeezed.
  • the burners rotate with 1 revolution per 2 s. In the range 30 ° before the burner aims at the reflector, the burner output is increased by 50% and switched back 30 ° before reaching the end of the reflector layer.
  • the ratio of oxygen to hydrogen is switched from a lean premix flame to a premix flame near the stoichiometric mixture fraction.
  • the mixing point of the two gas streams is placed directly in front of the entrance of the gases in the rotating burner head, so that the shortest possible paths are realized. Nevertheless, a fairly high inertia of the flames is observed, so that a substantially sinusoidal course of the flame power is observed over the circumference.
  • the emitters produced in this way have a negligible reject rate with a visually and mechanically cleanly executed pinch.
  • the gas feed was optimized so that both burners are controlled independently of each other and position-dependent.
  • the burner output is then increased in the angular range of the additionally applied reflector layer such that the increase corresponds approximately to the additional mass located there.
  • a circular tube with a diameter of 19 mm with a wall thickness of 1.6 mm and a coating of 0.8 mm thickness and a density of> 95% of the lamp tube was squeezed over 200 ° of the tube circumference.
  • the burners rotate with 1 revolution per 2 s.
  • the stoichiometry of the flame is left unaffected, but the power of the combustion gases is varied via the exit velocity.
  • the fuel gas supply is increased 10 ° before reaching the reflector for both burners by 30% and 10 ° before reaching the end of the reflector again withdrawn. This procedure shows a higher reaction rate, since not only the stoichiometric change must flow into the burners, but only the pressure wave has to migrate from the controllers to the burner.
  • the gas supply is optimized so that both burners are controlled independently of each other and position-dependent.
  • the burner output is then increased in the region of the additionally applied reflector layer such that the increase corresponds approximately to the additional mass located there.
  • a twin tube measuring 33 ⁇ 14 mm and having a mean wall thickness of 1.8 mm and a coating of 0.9 mm thickness and a density of> 95% of the lamp tube over 180 ° of the tube circumference was squeezed. To do this, the burners rotate with 1 revolution per 2 s.
  • the stoichiometry of the flame is left unaffected, but the output speed of the combustion gases varies the power.
  • the fuel gas supply is 10 ° before Reached the reflector for both burners increased by 40% and 10 ° before reaching the end of the reflector again withdrawn.
  • the performance is briefly increased by a further 30% on both sides.
  • the plant with standing burners is in FIG. 3 shown:
  • the gas feed was optimized so that two burners on each side were controlled together.
  • the burner output is then increased in the region of the reflector layer (11) additionally applied to the tube (10) such that the increase corresponds approximately to the additional mass located there.
  • fuel gas here hydrogen and oxygen taken from pressure bottles.
  • the invention is not limited to the exact selection of the fuel gas, nor to the exact form of gas storage or supply.
  • MFC mass flow controllers
  • the invention is not limited to the use of MFC, it can just as well also variable area flow regulator or any other suitable form of control of gas quantities are used.
  • each burner group For each burner group, one regulator each is used for oxygen (40, 41) and hydrogen (42, 43). In principle, of course, each burner can be controlled individually.
  • a circular tube with a diameter of 19 mm with a wall thickness of 1.6 mm and a coating of 0.8 mm thickness and a density of> 95% of the lamp tube was squeezed over 200 ° of the tube circumference.
  • the stoichiometry of the flames is chosen differently. Reflector side, the flames are operated near the stoichiometric ratio. On the opposite side, a meager flame of the same momentum is selected, but at 30% less power.
  • the two crimping jaws (30, 31) rapidly approach each other and form the pinch.
  • grooves (32) are milled into the jaws, which create protuberances on the pinch.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
  • Surface Treatment Of Glass (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
  • Optical Elements Other Than Lenses (AREA)

Claims (4)

  1. Procédé de fabrication d'un radiateur à infrarouges à partir d'un corps de verre quartzeux sans fin, dans lequel une couche réfléchissante est appliquée partiellement sur la surface du corps de verre quartzeux, caractérisé en ce que le corps de verre quartzeux est partagé en différents tronçons de tube de radiateur après application de la couche réfléchissante, et que les extrémités des tronçons de tube de radiateur sont écrasées au moyen de deux brûleurs tournant sur un axe de rotation, dans lequel soit les tronçons de tube de radiateur sont décalés par rapport à l'axe de rotation avec leur axe de symétrie, de telle sorte que le côté revêtu de la couche réfléchissante est disposé plus près des brûleurs que leur côté non revêtu, soit les deux brûleurs rotatifs présentent une alimentation en gaz avec laquelle les brûleurs peuvent être pilotés indépendamment l'un de l'autre et en fonction de leur position.
  2. Procédé selon la revendication 1, caractérisé en ce qu'une couche réfléchissante de SiO2 est appliquée.
  3. Procédé selon l'une ou plusieurs des revendications précédentes, caractérisé en ce qu'une couche réfléchissante opaque à répartition diffuse est appliquée.
  4. Radiateur à infrarouges, fabriqué selon l'une des revendications 1 à 3.
EP08715655.0A 2007-02-20 2008-01-17 Emetteur a rayons infrarouges a reflecteur opaque et mode de production correspondant Not-in-force EP2122666B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08715655T PL2122666T3 (pl) 2007-02-20 2008-01-17 Promiennik podczerwieni z nieprzezroczystym reflektorem oraz jego produkcja

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007008696A DE102007008696B3 (de) 2007-02-20 2007-02-20 Infrarotstrahler mit opakem Reflektor und seine Herstellung
PCT/EP2008/000322 WO2008101573A2 (fr) 2007-02-20 2008-01-17 Émetteur à rayons infrarouges à réflecteur opaque et mode de production correspondant

Publications (2)

Publication Number Publication Date
EP2122666A2 EP2122666A2 (fr) 2009-11-25
EP2122666B1 true EP2122666B1 (fr) 2017-05-10

Family

ID=39696357

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08715655.0A Not-in-force EP2122666B1 (fr) 2007-02-20 2008-01-17 Emetteur a rayons infrarouges a reflecteur opaque et mode de production correspondant

Country Status (9)

Country Link
US (1) US8210889B2 (fr)
EP (1) EP2122666B1 (fr)
JP (1) JP5537953B2 (fr)
KR (1) KR101368537B1 (fr)
CN (1) CN101617386B (fr)
DE (1) DE102007008696B3 (fr)
ES (1) ES2633447T3 (fr)
PL (1) PL2122666T3 (fr)
WO (1) WO2008101573A2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009048081A1 (de) * 2009-10-02 2011-04-07 Heraeus Noblelight Gmbh Infrarotbestrahlungsvorrichtung, insbesondere Infrarotbestrahlungsheizung mit einem Infrarotstrahler
DE102011115841A1 (de) * 2010-11-19 2012-05-24 Heraeus Noblelight Gmbh Bestrahlungsvorrichtung
US11057963B2 (en) * 2017-10-06 2021-07-06 Applied Materials, Inc. Lamp infrared radiation profile control by lamp filament design and positioning
US11370213B2 (en) 2020-10-23 2022-06-28 Darcy Wallace Apparatus and method for removing paint from a surface

Family Cites Families (20)

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Publication number Priority date Publication date Assignee Title
NL258284A (fr) * 1959-12-24
NL178041C (nl) * 1978-11-29 1986-01-02 Philips Nv Elektrische lamp.
GB8320639D0 (en) * 1983-07-30 1983-09-01 Emi Plc Thorn Incandescent lamps
JPH067478B2 (ja) * 1984-07-11 1994-01-26 松下電子工業株式会社 白熱電球の製造方法
DE3841448C1 (fr) * 1988-12-09 1990-05-10 Heraeus Quarzschmelze Gmbh, 6450 Hanau, De
DE3910878A1 (de) * 1989-04-04 1990-10-11 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Zweiseitig gesockelte hochdruckentladungslampe
JPH03216950A (ja) * 1990-01-22 1991-09-24 Hitachi Ltd ハロゲン電球の製造方法
JPH05266797A (ja) * 1991-03-12 1993-10-15 Harrison Denki Kk 管球の排気装置用加熱炉
JP2884211B2 (ja) * 1993-04-23 1999-04-19 株式会社小糸製作所 白熱電球の製造方法
DE4422100C1 (de) * 1994-06-24 1995-12-14 Fresenius Ag Flexible medizinische Verpackungseinheit für die Hämodialyse zur Herstellung eines Dialysierflüssigkeit-Konzentrats sowie Vorrichtung hierfür
DE19822829A1 (de) * 1998-05-20 1999-11-25 Heraeus Noblelight Gmbh Kurzwelliger Infrarot-Flächenstrahler
JP2001068068A (ja) * 1999-06-23 2001-03-16 Matsushita Electronics Industry Corp 管球の製造方法
US7238262B1 (en) * 2000-03-29 2007-07-03 Deposition Sciences, Inc. System and method of coating substrates and assembling devices having coated elements
JP3729767B2 (ja) * 2001-09-25 2005-12-21 松下電器産業株式会社 管球の製造方法
DE10211249B4 (de) 2002-03-13 2004-06-17 Heraeus Noblelight Gmbh Verwendung eines Glanzedelmetallpräparats
DE10253582B3 (de) * 2002-11-15 2004-07-15 Heraeus Noblelight Gmbh Infrarotstrahler, Verfahren zu seiner Herstellung und seine Verwendung
DE10319008A1 (de) * 2003-04-25 2004-11-11 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Infrarotstrahler und Bestrahlungsvorrichtung
US7563512B2 (en) * 2004-08-23 2009-07-21 Heraeus Quarzglas Gmbh & Co. Kg Component with a reflector layer and method for producing the same
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DE102004051846B4 (de) * 2004-08-23 2009-11-05 Heraeus Quarzglas Gmbh & Co. Kg Bauteil mit einer Reflektorschicht sowie Verfahren für seine Herstellung

Also Published As

Publication number Publication date
ES2633447T3 (es) 2017-09-21
EP2122666A2 (fr) 2009-11-25
KR101368537B1 (ko) 2014-02-27
US20100117505A1 (en) 2010-05-13
CN101617386B (zh) 2013-02-20
WO2008101573A3 (fr) 2008-12-31
DE102007008696B3 (de) 2008-10-02
JP2010519155A (ja) 2010-06-03
PL2122666T3 (pl) 2017-10-31
JP5537953B2 (ja) 2014-07-02
CN101617386A (zh) 2009-12-30
US8210889B2 (en) 2012-07-03
KR20090114403A (ko) 2009-11-03
WO2008101573A2 (fr) 2008-08-28

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