EP2122666A2 - 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

Info

Publication number
EP2122666A2
EP2122666A2 EP08715655A EP08715655A EP2122666A2 EP 2122666 A2 EP2122666 A2 EP 2122666A2 EP 08715655 A EP08715655 A EP 08715655A EP 08715655 A EP08715655 A EP 08715655A EP 2122666 A2 EP2122666 A2 EP 2122666A2
Authority
EP
European Patent Office
Prior art keywords
burners
reflector
tube
reflector layer
quartz
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
EP08715655A
Other languages
German (de)
English (en)
Other versions
EP2122666B1 (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

Links

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.
  • 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 side facing away from 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 and persists permanently at a maximum temperature of 600 ° C. At higher temperatures, loss of adhesion and evaporation of the gold lead after only a short time to a loss of the reflective property.
  • Reflective layers of gold with a high reflectivity of more than 90% generally have the disadvantage that they have only a limited temperature resistance or a low reflection rate.
  • 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 0 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 shown in DE 29 47 230 A1.
  • 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. This object is already achieved with the features of the independent claim.
  • 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 described for example in DE 10 2004 051 846 A1, 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 such 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.
  • Figure 1 shows a preferred embodiment with eccentrically rotating burners
  • Figure 2 shows a preferred embodiment with two opposed rotary burners and individually controlled gas flow
  • Figure 3 shows a preferred embodiment with four fixed burners, two of which are controlled together.
  • 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.
  • 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.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • FIG. 1 A section of a system with rotating burners is shown in FIG.
  • 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 gas quantities or gas mixtures are controlled via a gas control system shown in FIG. 3, for example, as a 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 fixed, for example, by holders (13) placed on the tube, in which the outer molybdenum rod (14) is hooked, while the helix (15) holds all components in position in the interior of the radiator via its spring force.
  • argon is blown through the tube to protect the internal components from oxidation.
  • a circular tube with a diameter of 19 mm and with 1, 6 mm wall thickness and a coating of 0.8 mm thickness and a density of> 95% of the lamp tube material, applied over 180 ° of the pipe circumference was 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 round 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% was squeezed by the lamp tube over 200 ° of the tube circumference. To do this, 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 an average wall thickness of 1.8 mm and a coating of 0.9 mm thickness and a density of> 95% of the lamp tube was squeezed over 180 ° of the tube circumference. 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.
  • Embodiment 5 is a diagrammatic representation of Embodiment 5:
  • FIG. 3 The system with standing burners is shown in FIG. 3:
  • 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 precise 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 one regulator each is used for oxygen (40, 41) and hydrogen (42, 43).
  • each burner can be controlled individually. Specifically, a round 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% was squeezed by the lamp tube over 200 ° of the tube circumference.
  • the stoichiometry of the flames is chosen differently. On the reflector side, the flames are operated close to 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)

Abstract

L'invention concerne un procédé pour produire un émetteur à rayons infrarouges à partir d'un corps en verre de quartz, selon lequel une couche réfléchissante est appliquée au moins en partie sur la surface du corps en verre de quartz, ledit corps en verre de quartz étant divisé en sections individuelles après application de la couche réfléchissante. L'invention concerne également un émetteur à rayons infrarouges.
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 true EP2122666A2 (fr) 2009-11-25
EP2122666B1 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
WO2019070382A1 (fr) * 2017-10-06 2019-04-11 Applied Materials, Inc. Contrôle de profil de rayonnement infrarouge de lampe par conception et positionnement de filament de lampe
US11370213B2 (en) 2020-10-23 2022-06-28 Darcy Wallace Apparatus and method for removing paint from a surface

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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
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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
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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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Also Published As

Publication number Publication date
DE102007008696B3 (de) 2008-10-02
WO2008101573A2 (fr) 2008-08-28
EP2122666B1 (fr) 2017-05-10
US8210889B2 (en) 2012-07-03
ES2633447T3 (es) 2017-09-21
JP5537953B2 (ja) 2014-07-02
KR101368537B1 (ko) 2014-02-27
PL2122666T3 (pl) 2017-10-31
KR20090114403A (ko) 2009-11-03
CN101617386B (zh) 2013-02-20
CN101617386A (zh) 2009-12-30
WO2008101573A3 (fr) 2008-12-31
US20100117505A1 (en) 2010-05-13
JP2010519155A (ja) 2010-06-03

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