EP1534048A2 - Heizungseinrichtung, insbesondere Halogen-Strahlungsheizer - Google Patents
Heizungseinrichtung, insbesondere Halogen-Strahlungsheizer Download PDFInfo
- Publication number
- EP1534048A2 EP1534048A2 EP04026649A EP04026649A EP1534048A2 EP 1534048 A2 EP1534048 A2 EP 1534048A2 EP 04026649 A EP04026649 A EP 04026649A EP 04026649 A EP04026649 A EP 04026649A EP 1534048 A2 EP1534048 A2 EP 1534048A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- heating device
- heating
- conductor
- heating conductor
- sheath
- 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.)
- Withdrawn
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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
- H05B3/0071—Heating devices using lamps for domestic applications
- H05B3/0076—Heating devices using lamps for domestic applications for cooking, e.g. in ovens
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/02—Incandescent bodies
- H01K1/04—Incandescent bodies characterised by the material thereof
- H01K1/08—Metallic bodies
-
- 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
- H05B3/68—Heating arrangements specially adapted for cooking plates or analogous hot-plates
- H05B3/74—Non-metallic plates, e.g. vitroceramic, ceramic or glassceramic hobs, also including power or control circuits
- H05B3/744—Lamps as heat source, i.e. heating elements with protective gas envelope, e.g. halogen lamps
Definitions
- the invention relates to a heating device according to the preamble of claim 1 and a cooking stove heating.
- halogen radiant heater known for use under a glass ceramic hob. Characteristics of such halogen radiant heaters are a very rapid provision of heating power, especially during the cooking process is desired. Above all, one is essentially instantaneously optical feedback to a user given by the fact that the Halogen radiant heater lights up.
- halogen radiant heaters because very high inrush currents in conjunction with the grid reaction regulations the power company with only one for appropriate Power designed resistors are operated can.
- cooking hobs here is usually a conventional Resistance heater with heating wire, which is part of a stove heating forms, as a series resistor used, while the halogen radiant heater also forms an area of cooking stove heating.
- a circuit with series resistor can such Combined cooking surface heating of the switching conditions substantially similar to a conventional radiant heater, which only a horrsflowerdraht, operated.
- the invention is based on the object, an aforementioned heating device as well as to provide a cooking surface heating with which Disadvantages of the prior art can be avoided and it is particularly possible to the mandatory use of a series resistor to refrain from simpler and more diverse applications to enable.
- the heating conductor of such a heating device is arranged in a sheath. He is in the Cover airtight or gas-tight against the environment sealed.
- the heat conductor material should be high temperature resistant, beneficial Tungsten or molybdenum.
- the temperature coefficient of the electrical resistance of the heating conductor material is about the composition or alloy of the heating conductor material controlled so that the temperature coefficient is relatively low. This should be the resistance starting from room temperature over a temperature range from 1500 K, ie to about 1500 ° C, by a maximum of a factor of 3 to 4, advantageously less than 3, change. Particularly advantageous is the temperature coefficient such that the electrical resistance is based on Room temperature even over a temperature range of 2000 K also maximum by a factor of 3 changes, advantageously even only by the factor 2.5 or less.
- This relatively low temperature coefficient not only causes that the properties and in particular the electrical resistance of the Change heating conductor only slightly.
- the main advantage is that at an electrical connection of the heating device to a given fixed mains voltage, the operating currents over a wide Temperature range only fluctuate by the specified factor. sets Consider such a heating element for a nominal operating performance, which in naturally hot condition apply at nominal operating temperature should, so the cold resistance at the beginning of the operation to the above Factor up to 3 smaller.
- the inrush current is also at room temperature, although significantly higher than the rated operating current. However, the difference is much smaller than with known ones Halogen radiant heaters. Above all, the inrush current is at a Rated power of just over 2000 W and a connection to 230 V Mains voltage about 25 to 30 A.
- the change of the electrical resistance of the heat conductor is advantageous over the stated temperature range or the range of operating temperatures away monotonically increasing, so without decrease. Especially Advantageously, it can increase strictly monotonically, so that the resistance with the temperature always increases, albeit slowly.
- a halogen radiant heater can be provided be, which manages without resistor. This is simplified the structure, lowers the cost and above all allows a far freer structural design of radiant heaters. Especially It is possible to use a radiant heater exclusively build such halogen radiant heaters.
- the heating conductor material may be based on molybdenum or tungsten have further alloying constituents, for example titanium, vanadium, Zirconium, niobium, hafnium, tantalum or rhenium. Likewise, each can alternately molybdenum or tungsten are alloyed. The amount such other alloy components should be at most 35%, advantageously a maximum of 28%.
- One possible such alloy is mainly Tungsten on with an alloying constituent of about 26% Rhenium.
- Such alloys are, for example, under the name "W26Re" available from the Austrian company Plansee AG.
- the heating conductor is advantageously in wire form, in particular as a round wire. It can be coiled by the usual method.
- the cladding of the heat conductor can light or radiation permeable be.
- it consists of glass or quartz and is in particular tubular.
- the envelope or an enveloping Pipe be varied designed and the desired shape for the heating device, for example, when used as a radiant heater for a stove heating, be adapted and a given Cover the area. It can be straight or round.
- a the heating conductor at Operating temperature protective gas is included in the enclosure. This is suitable advantageous halogen.
- an inert gas it is possible to evacuate the enclosure after insertion of the heating element.
- the heating conductor or an entire heating device in a carrier, for example a so-called polymer ceramic, to embed.
- the polymer ceramic may also be in foamed or expanded form.
- a reflector may be provided be. This causes the output from the heater Radiation as possible in a given direction, in particular on the Cooker is directed to.
- the reflector can with respect to shape and Course adapted to the heater or to the heating element be. For example, it may be trough-shaped or trough-shaped.
- a particularly advantageous use of the new properties of a above-described heating device or cooking stove heating results through the good controllability of the energy supply. This can as with currently used radiant heaters on a clocked Power supply, in which always during a one-time nominal voltage and nominal operating current are given. Alternatively, the Power supply itself or power supply are continuously adjusted, in particular by adjustable operating voltage. These are electronic Regulations particularly advantageous.
- Fig. 1 shows a cooking surface heating 11. This has a substantially annular orbiting halogen radiant heaters 13.
- the halogen radiant heater 13 consists of a round glass tube 15th In it runs a coiled heating wire 17, which by spacers 18 is held approximately centrally in the glass tube 15.
- On the right side a connection device 20 is provided. This ensures that the glass tube 15 is sealed gas-tight with a halogen therein and the heating conductors 17 are led out at both ends to the electric Connection.
- halogen radiant heater 13 is mounted on a two-piece heat-insulating body 22.
- Heat-insulating body 22 in turn is contained in a metal shell 24. This corresponds to the usual construction of a radiant heater, in particular also for halogen radiant heaters.
- Fig. 3 is a diagram is shown, in which for a W27Re alloy with a 0.25mm thick wire the specific electrical Resistance ⁇ in ⁇ m is plotted against the temperature in K. It's closed detect how about at room temperature, the resistance just under 0.3 ⁇ m. At a temperature of 2500 K it is about 0.9 ⁇ m, So that's almost three times. As the course of resistivity is approximately linear, it can be determined from this as a slope that Over a range of about 2000 K, the resistivity is about increased by a factor of 2.8. This is the W27Re alloy characterized here in about the same range as those detailed above described W26Re alloy.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Resistance Heating (AREA)
Abstract
Description
- Fig. 1
- eine Draufsicht auf eine Kochstellenbeheizung für beispielsweise ein Glaskeramik-Kochfeld,
- Fig. 2
- einen Querschnitt durch die Kochstellenbeheizung aus Fig. 1 mit einem wärmedämmenden Träger und
- Fig. 3
- ein Diagramm des Verhaltens des spezifischen Widerstandes über der Temperatur für eine W27Re-Legierung mit einem 0,25mm dicken Draht.
Claims (15)
- Heizungseinrichtung (11), insbesondere Strahlungsheizkörper (13), mit einem Heizleiter (17), welcher in einer Umhüllung (15) luftdicht angeordnet ist, wobei das Heizleiter-Material überwiegend ein hochtemperaturbeständiges Material wie Wolfram oder Molybdän aufweist, dadurch gekennzeichnet, dass das Heizleiter-Material einen Temperaturkoeffizienten seines elektrischen Widerstands aufweist, der über einen Temperaturbereich von 1500K eine Widerstandsänderung um maximal den Faktor 3 bewirkt.
- Heizungseinrichtung nach Anspruch 1, gekennzeichnet durch einen Temperaturkoeffizienten, bei dem sich über einen Temperaturbereich von 2000K der elektrische Widerstand des Heizleiters (17) um einen Faktor von maximal 3 ändert, insbesondere um maximal einen Faktor 2,5.
- Heizungseinrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Änderung des elektrischen Widerstands des Heizleiters (17) monoton ansteigend ist, vorzugsweise streng monoton ansteigend.
- Heizungseinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Heizleiter-Material zusätzlich einen Legierungsbestandteil mit maximal 35%, insbesondere maximal 28%, aus der folgenden Gruppe aufweist:Ti, V, Zr, Nb, Mo, Hf, Ta, W oder Re.
- Heizungseinrichtung nach Anspruch 4, dadurch gekennzeichnet, dass das Heizleiter-Material eine Legierung mit der Bezeichnung W26Re ist.
- Heizungseinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Heizleiter (17) ein Draht ist, vorzugsweise mit einem Durchmesser kleiner 1mm, insbesondere 0,1 mm bis 0,3mm.
- Heizungseinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Nennleistung der Heizungseinrichtung (11) oder des Strahlungsheizers (13) ca. 2500 W beträgt und/oder die Betriebstemperatur bei mehr als 1200°C liegt.
- Heizungseinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Umhüllung (15) licht- bzw. strahlungsdurchlässig ist und insbesondere aus Glas besteht oder ein Quarzrohr ist.
- Heizungseinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass in der Umhüllung (15) ein Schutzgas oder Gasgemisch, vorzugsweise Halogen, enthalten ist.
- Heizungseinrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die Umhüllung (15) ein Vakuum aufweist.
- Heizungseinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Heizleiter (17), vorzugsweise auch die Heizungseinrichtung (11), in Polymerkeramik eingebettet ist.
- Heizungseinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie länglich ist, wobei sie vorzugsweise dünn und langgezogen ist.
- Kochstellenbeheizung für ein Kochfeld, insbesondere mit einer Glaskeramik-Abdeckung, dadurch gekennzeichnet, dass sie mindestens eine Heizungseinrichtung (11) nach einem der vorhergehenden Ansprüche aufweist.
- Kochstellenbeheizung nach Anspruch 13, dadurch gekennzeichnet, dass die Heizungseinrichtung (11) mindestens einen Reflektor aufweist, dessen Verlauf dem Verlauf der Heizungseinrichtung und/oder des Heizleiters (13) entspricht, wobei vorzugsweise ein Reflektor ein- oder mehrschichtig aufgebaut ist.
- Kochstellenbeheizung nach Anspruch 13 oder 14, gekennzeichnet durch eine Steuerung zur Leistungszufuhr zu der Heizungseinrichtung (11), welche stufenlos ist, insbesondere elektronisch einstellbar ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003155280 DE10355280A1 (de) | 2003-11-19 | 2003-11-19 | Heizungseinrichtung, insbesondere Halogen-Strahlungsheizer |
DE10355280 | 2003-11-19 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1534048A2 true EP1534048A2 (de) | 2005-05-25 |
EP1534048A3 EP1534048A3 (de) | 2007-03-28 |
Family
ID=34428896
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04026649A Withdrawn EP1534048A3 (de) | 2003-11-19 | 2004-11-10 | Heizungseinrichtung, insbesondere Halogen-Strahlungsheizer |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1534048A3 (de) |
DE (1) | DE10355280A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104409318A (zh) * | 2014-11-13 | 2015-03-11 | 连云港市欧雅特照明电器有限公司 | 一种生产小型石英弹簧灯的方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB816135A (en) * | 1955-01-28 | 1959-07-08 | Ass Elect Ind | Workable alloys of molybdenum and tungsten containing rhenium |
US4216009A (en) * | 1977-07-27 | 1980-08-05 | Sumitomo Electric Industries, Ltd. | Method of making alloy and carbide powders of molybdenum and tungsten |
EP0176027A1 (de) * | 1984-09-22 | 1986-04-02 | E.G.O. Elektro-Geräte Blanc u. Fischer | Strahlheizkörper für Kochgeräte |
EP0954202A2 (de) * | 1998-04-30 | 1999-11-03 | Ceramaspeed Limited | Elektrischer Strahlungsheizkörper |
WO2003031668A1 (fr) * | 2001-10-09 | 2003-04-17 | Kabushiki Kaisha Toshiba | Fil de tungstene, element de chauffage de cathode et filament pour lampe anti-vibrations |
-
2003
- 2003-11-19 DE DE2003155280 patent/DE10355280A1/de not_active Withdrawn
-
2004
- 2004-11-10 EP EP04026649A patent/EP1534048A3/de not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB816135A (en) * | 1955-01-28 | 1959-07-08 | Ass Elect Ind | Workable alloys of molybdenum and tungsten containing rhenium |
US4216009A (en) * | 1977-07-27 | 1980-08-05 | Sumitomo Electric Industries, Ltd. | Method of making alloy and carbide powders of molybdenum and tungsten |
EP0176027A1 (de) * | 1984-09-22 | 1986-04-02 | E.G.O. Elektro-Geräte Blanc u. Fischer | Strahlheizkörper für Kochgeräte |
EP0954202A2 (de) * | 1998-04-30 | 1999-11-03 | Ceramaspeed Limited | Elektrischer Strahlungsheizkörper |
WO2003031668A1 (fr) * | 2001-10-09 | 2003-04-17 | Kabushiki Kaisha Toshiba | Fil de tungstene, element de chauffage de cathode et filament pour lampe anti-vibrations |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104409318A (zh) * | 2014-11-13 | 2015-03-11 | 连云港市欧雅特照明电器有限公司 | 一种生产小型石英弹簧灯的方法 |
CN104409318B (zh) * | 2014-11-13 | 2016-09-14 | 连云港市欧雅特照明电器有限公司 | 一种生产小型石英弹簧灯的方法 |
Also Published As
Publication number | Publication date |
---|---|
EP1534048A3 (de) | 2007-03-28 |
DE10355280A1 (de) | 2005-06-23 |
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