WO2006111151A1 - Dispositif de rayonnement thermique - Google Patents

Dispositif de rayonnement thermique Download PDF

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Publication number
WO2006111151A1
WO2006111151A1 PCT/DE2006/000692 DE2006000692W WO2006111151A1 WO 2006111151 A1 WO2006111151 A1 WO 2006111151A1 DE 2006000692 W DE2006000692 W DE 2006000692W WO 2006111151 A1 WO2006111151 A1 WO 2006111151A1
Authority
WO
WIPO (PCT)
Prior art keywords
reflector
radiator
light source
housing
heat radiator
Prior art date
Application number
PCT/DE2006/000692
Other languages
German (de)
English (en)
Inventor
Wilbert Effmert
Markus Dumon
Original Assignee
Deutsche Mechatronics 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 Deutsche Mechatronics Gmbh filed Critical Deutsche Mechatronics Gmbh
Priority to EP06722810A priority Critical patent/EP1897410B1/fr
Priority to DE112006001693T priority patent/DE112006001693A5/de
Priority to DE502006002083T priority patent/DE502006002083D1/de
Publication of WO2006111151A1 publication Critical patent/WO2006111151A1/fr

Links

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
    • H05B3/00—Ohmic-resistance heating
    • H05B3/0033—Heating devices using lamps
    • H05B3/009—Heating devices using lamps heating devices not specially adapted for a particular application
    • 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
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/032—Heaters specially adapted for heating by radiation heating

Definitions

  • the invention relates to a heat radiator in rod form, consisting of a light source, a housing and a reflector, and a multi-zone radiator.
  • Rod-shaped heat radiators are known as so-called round tube or as a double tube with reflector.
  • DE 4438870 (Heraeus Noblelight) discloses an infrared radiator with an elongated radiation source in which a quartz glass capillary tube is used which contains a carbon fiber band as the resistance body.
  • the quartz glass tube is designed as a double-tube radiator, the rear side being provided with a reflection layer.
  • radiators used for heating products with circular or elliptical cross sections emit the radiation in a large emission cone. Only a small part of the technically usable radiation is used to heat the products. The achievable with the known radiators area performance for heating products is therefore not optimal.
  • multi-zone radiators which consist of several, arranged in a direction parallel to the heating material heat radiators, it is not yet possible to provide heating energy for heating products within a sharply delimited temperature zone. Also, it is very difficult to comply with the known multi-zone radiators accurate temperature profiles, since the radiation angle of the individual heat radiators are very large and therefore overlaps the radiated heat energy of each heat radiator with the adjacent heat radiator.
  • Object of the present invention is to produce a heat radiator of the type mentioned in rod form of vitreous material, which does not have the disadvantages mentioned and allows a small Abstrahlkegel and thus increasing the yield of technically usable radiation.
  • the area performance should be precisely adjustable and a variable temperature profile on the surface of the heat-up material should be made possible.
  • FIG. 1 An inventively designed heat radiator with a straight front surface is shown in FIG. This already allows a narrow beam angle through the parabolic curved reflection wall.
  • FIG. 1 An inventive heat radiator with an integrated, spherically formed or convex lens on the front side is shown in FIG.
  • the radiation angle decreases in accordance with the lens curvature, so that a zone with very strong radiation and the focusing of the emitted beams is achieved.
  • Fig. 9 emitter according to the prior art
  • the radiator is equipped with a light source 2, a housing 3 and a reflector 4 on the back.
  • the housing is made of quartz glass, which closes like a shell completely around the light source, wherein a radiation exit surface 5 is located on the front and the reflector surface on the back.
  • parabolic-shaped reflector In the case of a parabolic-shaped reflector, the radiation intensities shown in FIG. 1 result, with a higher heat intensity being achieved in the overlapping area of many beams than in the outer area.
  • parabolic shape of the reflector prevents radiation in the glass body dead by reflections and thereby accounts in the energy balance as usable radiation.
  • FIG. 2 shows an alternative form of the heat radiator with a luminous source 2.1 arranged in the cavity of the housing 3.1 according to the present invention.
  • the quartz glass envelope has a reflector 4.1 at the rear and at the front a lenticular thickening 6-1, so that the radiation angle ⁇ is considerably reduced compared to the example of Figure 1.
  • the radiation angle ⁇ is in the range of 50 ° to 60 °, wherein the focal length F of the lenticular thickening 6.1 results according to the following equation:
  • R 2 inner radius of curvature of the lenticular thickening
  • FIG. 3 shows a heat radiator according to the invention with a light source 2.2 arranged in the cavity in the housing 3.2 and with a front and a back lens-shaped thickening 6.2, 7 and a reflector 8 in an application (bonding a spine) represented.
  • the beam path is shown with a dashed line, it can be seen that a maximum of surface power for heating the product 9 is achieved by the narrow focus.
  • a high uniformity of the bond is provided by the zonal limitation of the radiation field.
  • the housing may have instead of the thickening 7 on its back an outwardly curved, patch body, on which the reflector rests flush.
  • the heat radiator from the prior art according to FIG. 4 records a high heat loss due to the large reflector wrap angle ⁇ of 340 ° to 355 ° and as a result the missing front / rear lenses.
  • the reflector 8.1 is pulled around the housing surface of the radiator far, so that only a small opening angle for the exiting heat ray, which is directed to a spine 9.1 remains. The rest of the non-emergent rays is consumed as heat within the radiator, which is why it must be additionally cooled.
  • FIG. 5 shows in section A a multi-zone radiator consisting of six individual heat radiators 10 to 15 whose heat outlet surfaces are arranged parallel to the material to be heated 16. A arranged at the upper portion of the Auffilgutes 16 thread 17 is outside the radiation field of the heat radiator 10 to 15.
  • a multi-zone radiator according to the prior art with associated overall temperature profile is shown in section A of Figure 6. Since the radiation fields of the heat radiators 20 to 25 strongly overlap, so-called bulkhead plates, which are water-cooled, are needed in order to limit the heat-affected zone. For example, a partition plate 26 for shielding the thread 27 in the upper region of the Auffilgutes 16 is arranged. With this device, a precisely adjustable temperature profile can not be realized, so that a wavy surface as shown in section C of FIG. 6 results after the deformation of the heating material 16. Due to the scale change to 1: 5, the undeformed thread 27 decreases in the representation "C".
  • the temperature profiles of the multi-zone radiator according to the invention are compared as a curve 28 with the curve 29 obtained according to the prior art. It turns out that due to the elevated temperature 30 in the areas large deformation and the lower temperatures 31 in the areas of low deformation, the potential of the heat-up can be better utilized by adjusting the favorable for each deformation temperature profile, so that the inventive arrangement is superior to the prior art in the control of the heating process and the deformation process. Very sharp-edged contours can be imaged on the surface of the heat-up material.
  • the beam paths of a conventional round tube radiator with reflector 41 and a conventional double-tube radiator with reflector 42, 43 are shown in FIGS. 6 and 7.
  • the radiation angle in a conventional round tube emitter is approximately 180 ° with a uniform radiation distribution.
  • the conventional double-tube reflector with the reflector of the beam angle is also about 165 °, but it results from reflected radiation, an area with increased radiation power, due to the reflector shape, a portion of the radiation is reflected back and forth in the radiator so long that the radiation energy completely converted into waste heat.
  • Another disadvantage is that a large part of the emitted power is scattered over the entire emission angle and therefore can not contribute to increasing the maximum Einstrahl amongsêt.
  • Another advantage is that due to the sharp delimitation of the radiation cone, it is possible to specifically heat only certain zones of the product and thus, for example, to produce a temperature profile in the product.
  • the lens creates a focal point in which the power density increases extremely. This focusing has advantages for certain applications, for example in the welding wire preheating.
  • the focal point extends as a line or rectangle whose width to the radiator diameter is in a ratio of 0.05 to 0.5, for special applications up to 1, 0.
  • the housing is thickened like a lens in the area of the exit surface. But it can also be placed patch body on the housing, which is particularly advantageous on the back of the heat radiator according to the invention.
  • the reflection layer is integrated with the rear side of the heat radiator. This means that the beam path is not scattered or broken by intermediate layers, for example by air gaps or by other materials, but is held with high power output within the effective reflection range of the heat radiator.

Landscapes

  • Control Of Resistance Heating (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

La présente invention concerne un dispositif de rayonnement thermique en forme de barre (2), qui consiste en une source de lumière, un boîtier (3) et un dispositif de réflexion (4), le boîtier se présentant sous la forme d'une enveloppe de verre qui recouvre la source de lumière sur toute sa longueur et l'entoure de tous côtés, ladite enveloppe présentant une surface de sortie de rayonnement sur le côté avant, une surface réfléchissante sur le côté arrière, et sur le côté avant et/ou arrière un épaississement en forme de lentille, recourbé vers l'extérieur (6, 7). L'épaississement consiste en une lentille convexe, les rayons réfléchis étant mis en faisceau au niveau d'un foyer linéaire, et un espace creux étant formé entre la surface de sortie de rayonnement et le dispositif de réflexion, la source de lumière se présentant sous la forme d'une barre, d'une bande ou d'une hélice à l'intérieur dudit espace creux, la couche réfléchissante étant intégrée au côté arrière du dispositif de rayonnement thermique. L'invention a également pour objet un dispositif de rayonnement à plusieurs zones qui consiste en au moins trois dispositifs de rayonnement thermique dont les champs de rayonnement se recouvrent au moins partiellement.
PCT/DE2006/000692 2005-04-20 2006-04-20 Dispositif de rayonnement thermique WO2006111151A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP06722810A EP1897410B1 (fr) 2005-04-20 2006-04-20 Dispositif de rayonnement thermique
DE112006001693T DE112006001693A5 (de) 2005-04-20 2006-04-20 Wärmestrahler
DE502006002083T DE502006002083D1 (de) 2005-04-20 2006-04-20 Wärmestrahler

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005018454.5 2005-04-20
DE200510018454 DE102005018454A1 (de) 2005-04-20 2005-04-20 Wärmestrahler

Publications (1)

Publication Number Publication Date
WO2006111151A1 true WO2006111151A1 (fr) 2006-10-26

Family

ID=36644862

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2006/000692 WO2006111151A1 (fr) 2005-04-20 2006-04-20 Dispositif de rayonnement thermique

Country Status (3)

Country Link
EP (1) EP1897410B1 (fr)
DE (3) DE102005018454A1 (fr)
WO (1) WO2006111151A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101951705A (zh) * 2010-08-31 2011-01-19 广东格兰仕集团有限公司 发热管

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US606792A (en) * 1898-07-05 Electric radiator
US4017758A (en) * 1974-04-16 1977-04-12 U.S. Philips Corporation Incandescent lamp with infrared filter
GB2133259A (en) * 1982-12-31 1984-07-18 Hans Fritz Electric radiant heater
US5276763A (en) * 1990-07-09 1994-01-04 Heraeus Quarzglas Gmbh Infrared radiator with protected reflective coating and method for manufacturing same
FR2732181A1 (fr) * 1995-03-21 1996-09-27 Thermal Quartz Schmelze Projecteur de rayonnement et panneau radiant

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR777012A (fr) * 1933-10-31 1935-02-09 Perfectionnements aux lampes électriques d'éclairage
FR829585A (fr) * 1937-11-19 1938-06-30 Appareil d'éclairage
DE1817548U (de) * 1960-06-29 1960-09-01 Accumulatoren Fabrik Ag Gluehbirne mit eingebautem reflektor.
DE2413111A1 (de) * 1974-03-19 1975-10-09 Cima International Distributio Lampe fuer bildwurfeinrichtungen
DE4021798A1 (de) * 1990-07-09 1992-02-06 Heraeus Quarzglas Infrarotstrahler mit geschuetzter reflexionsschicht und verfahren zu seiner herstellung
DE4438870B4 (de) * 1994-11-03 2004-11-11 Heraeus Noblelight Gmbh Infrarotstrahler mit langgestrecktem Widerstandskörper als Strahlenquelle
DE10029437B4 (de) * 2000-06-21 2005-11-17 Heraeus Noblelight Gmbh Infrarotstrahler und Verfahren zum Betreiben eines solchen Infrarotstrahlers

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US606792A (en) * 1898-07-05 Electric radiator
US4017758A (en) * 1974-04-16 1977-04-12 U.S. Philips Corporation Incandescent lamp with infrared filter
GB2133259A (en) * 1982-12-31 1984-07-18 Hans Fritz Electric radiant heater
US5276763A (en) * 1990-07-09 1994-01-04 Heraeus Quarzglas Gmbh Infrared radiator with protected reflective coating and method for manufacturing same
FR2732181A1 (fr) * 1995-03-21 1996-09-27 Thermal Quartz Schmelze Projecteur de rayonnement et panneau radiant

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101951705A (zh) * 2010-08-31 2011-01-19 广东格兰仕集团有限公司 发热管

Also Published As

Publication number Publication date
EP1897410A1 (fr) 2008-03-12
DE102005018454A1 (de) 2006-11-09
DE112006001693A5 (de) 2008-04-03
EP1897410B1 (fr) 2008-11-12
DE502006002083D1 (de) 2008-12-24

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