DE9003181U1 - Infrared heater with electric heating coil - Google Patents
Infrared heater with electric heating coilInfo
- Publication number
- DE9003181U1 DE9003181U1 DE9003181U DE9003181U DE9003181U1 DE 9003181 U1 DE9003181 U1 DE 9003181U1 DE 9003181 U DE9003181 U DE 9003181U DE 9003181 U DE9003181 U DE 9003181U DE 9003181 U1 DE9003181 U1 DE 9003181U1
- Authority
- DE
- Germany
- Prior art keywords
- tube
- heating coil
- infrared radiator
- temperature sensor
- carrier tube
- 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.)
- Expired - Lifetime
Links
- 238000005485 electric heating Methods 0.000 title description 3
- 238000010438 heat treatment Methods 0.000 claims description 17
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 13
- 238000005253 cladding Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 235000012239 silicon dioxide Nutrition 0.000 claims description 6
- 239000010453 quartz Substances 0.000 claims description 4
- 239000005368 silicate glass Substances 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
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
- H05B3/40—Heating elements having the shape of rods or tubes
- H05B3/42—Heating elements having the shape of rods or tubes non-flexible
- H05B3/44—Heating elements having the shape of rods or tubes non-flexible heating conductor arranged within rods or tubes of insulating material
-
- 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
Landscapes
- Resistance Heating (AREA)
Description
·.» . &iacgr; &iacgr; '..'..;.· f Hanau, 15. Harz 1990·.» . &iacgr;&iacgr;'..'..;.· f Hanau, 15. Harz 1990
··'. ..' '..··..· ..··..· ZPL-Dr.Hn/gr/ha/0856F··'. ..' '..··..· ..··..· ZPL-Dr.Hn/gr/ha/0856F
"Infrarot-Strahler mit elektrischer Helzwendel""Infrared heater with electric heating coil"
Die Erfindung bezieht sich auf einen Infrarotstrahler mit innerhalb eines Hullrohres angeordneter elektrischer Heizwendel und einem Temperatursensor.The invention relates to an infrared radiator with an electrical heating coil arranged within a casing tube and a temperature sensor.
Intürot-Strtihler üe: vorgenannter· Art siud aus der US-PS 3,614,387 bekannt. Bei diesen bekannten Infrarot-Strahlern ist S.« einem aetallhüllrohr eine elektrische Helzwenäel in elektrisch-i^rlirrendem Material aus beispieJ^weise Magnesiumoxid oder Bornitrid eingebettet. Das metallische Hüllrohr ist an seinen beiden Enden mittels eines Stopfens verschlossen. Zur Messung der Temperatur des HuUrohres ist auf dessen Innenseite ein Thermoelement als Temperatursensor angeordnet. Bei einer solchen Anordnung ist die Temperaturerfassung der Heizwendel mit erheblichen Zeitverzögerungen verbunden, so daß für eine Konstanttemperaturregelung mit einer größeren Hysterese zu rechnen ist.Infrared radiators of the type mentioned above are known from US-PS 3,614,387. In these known infrared radiators, an electrical heating coil is embedded in an electrically insulative material such as magnesium oxide or boron nitride in a metal cladding tube. The metal cladding tube is closed at both ends by a plug. To measure the temperature of the cladding tube, a thermocouple is arranged on the inside as a temperature sensor. With such an arrangement, the temperature detection of the heating coil is associated with considerable time delays, so that a larger hysteresis must be expected for constant temperature control.
Bekannt sind aus der Zeitschrift "Bf4EKTRO-VELT, 4. Jahrgang 1959, Ausgabe C, Nr. 5, Seite 114" Infrarot-Strahler mit einer elektrischen Heizwendel, die auf ein Quarzträgerrohr aufgewickelt 1st und in einem Hüllrohr aus Quarzglas oder Quarzgut angeordnet ist.Infrared radiators with an electrical heating coil wound on a quartz carrier tube and arranged in a cladding tube made of quartz glass or quartz material are known from the magazine "Bf 4 EKTRO-VELT, 4th year 1959, issue C, no. 5, page 114".
Die vorliegende Erfindung hat sich die Aufgabe gestellt, einen Infrarot-Strahler mit elektrischer Heizwendel zu schaffen, so daß eine Leistungsregelung in Abhängigkeit der Heizwendel-Temperatur mit sehr hoher Genauigkeit und Ancprechgeschwlndigkeit gewährleistet 1st.The present invention has set itself the task of creating an infrared radiator with an electric heating coil, so that power control depending on the heating coil temperature is guaranteed with very high accuracy and response speed.
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Gelöst wird diese Aufgabe für einen Infrarot-Strahler der eingangs charakterisierten Art dadurch, daß die Heizwendel auf ein Trägerohr aus Siliziumdior.' ,-haltigem Werkstoff aufgewickelt ist, das mit Spiel innerhalb eines a Hüllrohr©:? angeordnet ist, und daß isnerfc*;. des Trägerohres der Temperaturfj sensor angeordnet 1st. Bevorzugt besteht das Trägerrohr aus für '. iarot-Strahlung durchlässigem o^arzgut oder Quarzglas. Als Werkstoffe für das Hüllrohr haben sich Quarzgut, Quarzglas oder hochsilikatisches Glas bewährt. Das Trägerrohr tritt bevorzugt im Bereich eines Endes fvts Hüllrohres durch die Wand des HülIronies hindurch. Der Temperatursensor ist innerhalb des Hüllrohres verschiebbar angeordnet, so daß erforderlichenfalls während 4es Betriebes des Infrarot-Strahlers die Temperatur verschiedener Heizwendelbereiche durch Verschieben des Temperatursensors innerhalb des Trägerrohres erfaßt werden können. Als Temperatursensor hat sich ein Thermoelement bewährt, jedoch können auch andere Temperatursensoren innerhalb des Trägerrohres angeordnet werden. Das Trägerrohr selbst ist vorteilhafterweise als Kapillarrohr ausgebildet mit einem Innendurchmesser im Bereich von 0,5 bis 2 mm. Seine Wandstärke liegt im Bereich von 0,5 bis 2 mm. Die erfindungsgemäße Ausbildung des Infrarot-Strahlers, Insbesondere die Anordnung des Temperatursensors innerhalb des aus Infrarot-Strahlung durchlässigem Werkstoff ausgebildeten Trägerrohres für die Heizwendel, ermöglicht eine hohe Ansprechgeschwindigkeit des Temperatursensors auf die Temperatur der Heizwendel und damit eine Hysterese-freie Leistungsregelung der Heizwendeltemperatur. Die verschiebbare Anordnung des Temperitursensors innerhalb des Trägerrohres ermöglicht es, während des Betriebes des Infrarot-Strahlers auch auf prozeßbedingte Störgrößen Einfluß zu nehmen und die Leistungsregelung zu optimieren.This task is solved for an infrared radiator of the type initially characterized in that the heating coil is wound onto a carrier tube made of silicon dioxide-containing material, which is arranged with play within a sheathing tube, and in that the temperature sensor is arranged in the middle of the carrier tube. The carrier tube preferably consists of a material that is permeable to infrared radiation or quartz glass. Quartz material, quartz glass or highly silicate glass have proven to be suitable materials for the sheathing tube. The carrier tube preferably passes through the wall of the sheathing tube in the area of one end of the sheathing tube. The temperature sensor is arranged so that it can be moved within the sheathing tube, so that if necessary, during operation of the infrared radiator, the temperature of different heating coil areas can be recorded by moving the temperature sensor within the carrier tube. A thermocouple has proven to be a good temperature sensor, but other temperature sensors can also be arranged inside the support tube. The support tube itself is advantageously designed as a capillary tube with an inner diameter in the range of 0.5 to 2 mm. Its wall thickness is in the range of 0.5 to 2 mm. The inventive design of the infrared radiator, in particular the arrangement of the temperature sensor inside the support tube for the heating coil made of infrared radiation-permeable material, enables the temperature sensor to respond quickly to the temperature of the heating coil and thus hysteresis-free power control of the heating coil temperature. The movable arrangement of the temperature sensor inside the support tube makes it possible to influence process-related disturbances during operation of the infrared radiator and to optimize the power control.
in der Figur 1st ein Ausführungsbeispiel eines erfindungsgemäßen Infrarot-Strahlers schematisch dargestellt. Auf einen Trägerrohr l 1st die elektrische Heizwendel 2 aufgewickelt und das Trägerrohr 1 mittels der Distanzhalter 3 lnnorhalb des Hüllrohres 4 aus Quarzglas positioniert. Die beiden Hüllrohrendon sind mit Keremlkstopfen 5 unt 6 verschlossen. Wie ersichtlich, ist das Tragerrohr 1 an dem einen Ende des Hullrohres durch dessen Wand hindurchgeführt. In das Trägerrohr 1 ist der Temperatursensor 7Figure 1 shows a schematic representation of an embodiment of an infrared radiator according to the invention. The electrical heating coil 2 is wound onto a carrier tube 1 and the carrier tube 1 is positioned inside the cladding tube 4 made of quartz glass by means of the spacers 3. The two cladding tube ends are closed with ceramic plugs 5 and 6. As can be seen, the carrier tube 1 is guided through the wall of the cladding tube at one end. The temperature sensor 7 is inserted into the carrier tube 1.
eingeschoben. Er kann innerhalb des Trägerrohres 1 auch ^-ihrend des Betriebes des Infrarot-Strahlers hin und her verschoben werden, so daß beispielsweise bei Verwendung eines Thermoelementes als Temperatursensor die heiße Lötstelle 8 in verschiedenen Bereichen der Heizwendel 2 positonierbar 1st und damit auch während des Betriebes des Infrarot-Strahlers die Temperatur einzelner Heizwendelbereiche erfaßt werden kann. Die Heizwendel 2 wird mittels der Anschlußleitung 9, 10 mit einer Quelle für elektrischen Strom verbunden.inserted. It can also be moved back and forth within the carrier tube 1 during operation of the infrared radiator, so that, for example, when using a thermocouple as a temperature sensor, the hot soldering point 8 can be positioned in different areas of the heating coil 2 and thus the temperature of individual heating coil areas can be recorded even during operation of the infrared radiator. The heating coil 2 is connected to a source of electrical current by means of the connecting line 9, 10.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE9003181U DE9003181U1 (en) | 1989-07-28 | 1990-03-19 | Infrared heater with electric heating coil |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3925024 | 1989-07-28 | ||
| DE9003181U DE9003181U1 (en) | 1989-07-28 | 1990-03-19 | Infrared heater with electric heating coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE9003181U1 true DE9003181U1 (en) | 1990-08-09 |
Family
ID=25883490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE9003181U Expired - Lifetime DE9003181U1 (en) | 1989-07-28 | 1990-03-19 | Infrared heater with electric heating coil |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE9003181U1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19602586A1 (en) * | 1996-01-25 | 1996-07-18 | Ksg Geraetetechnik Gmbh | Bar shaped heating element with encasing tube of quartz or quartz material |
| DE19839457A1 (en) * | 1998-08-29 | 2000-03-09 | Heraeus Noblelight Gmbh | Spiral heating element, method and device for producing the same and infrared radiator produced using a spiral heating element |
-
1990
- 1990-03-19 DE DE9003181U patent/DE9003181U1/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19602586A1 (en) * | 1996-01-25 | 1996-07-18 | Ksg Geraetetechnik Gmbh | Bar shaped heating element with encasing tube of quartz or quartz material |
| DE19839457A1 (en) * | 1998-08-29 | 2000-03-09 | Heraeus Noblelight Gmbh | Spiral heating element, method and device for producing the same and infrared radiator produced using a spiral heating element |
| EP0987923A1 (en) * | 1998-08-29 | 2000-03-22 | Heraeus Noblelight GmbH | Method and device for manufacturing a helical heating device from a carbon strip |
| US6464918B1 (en) | 1998-08-29 | 2002-10-15 | Heraeus Noblelight Gmbh | Method for production of a spiral-shaped heating element |
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