DE717668C - Electric furnace with electric resistance heating elements - Google Patents

Electric furnace with electric resistance heating elements

Info

Publication number
DE717668C
DE717668C DES127571D DES0127571D DE717668C DE 717668 C DE717668 C DE 717668C DE S127571 D DES127571 D DE S127571D DE S0127571 D DES0127571 D DE S0127571D DE 717668 C DE717668 C DE 717668C
Authority
DE
Germany
Prior art keywords
heating elements
resistance heating
electric
tube
furnace
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
Application number
DES127571D
Other languages
German (de)
Inventor
Dr Phil Franz-Josef Mann
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.)
Siemens Plania Werke AG
Original Assignee
Siemens Plania Werke AG
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 Siemens Plania Werke AG filed Critical Siemens Plania Werke AG
Priority to DES127571D priority Critical patent/DE717668C/en
Application granted granted Critical
Publication of DE717668C publication Critical patent/DE717668C/en
Expired legal-status Critical Current

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
    • H05B3/62—Heating elements specially adapted for furnaces
    • H05B3/64—Heating elements specially adapted for furnaces using ribbon, rod, or wire heater
    • 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
    • H05B3/0019—Circuit arrangements

Landscapes

  • Control Of Resistance Heating (AREA)

Description

Elektroofen mit elektrischen Widerstandsheizkörpern Die Erfindung betrifft einen Elektroofen mit elektrischen Widerstandsheizkörpern und einer Einrichtung zum Messen der Ofentemperatur.Electric furnace with electric resistance heating elements The invention relates to an electric furnace with electric resistance heating elements and a device for measuring the oven temperature.

Durch die Erfindung sollea besondere Thermoelem.ente für die Temperaturmessung erspart werden, so daß in der Ofenwandung zusätzliche Öffnungen oder Einsätze für derartige Meßgeräte entbehrlich sind.The invention is intended to be a special thermocouple element for temperature measurement be saved, so that additional openings or inserts for in the furnace wall such measuring devices are dispensable.

Nach der Erfindung werden an sich bekannte Widerstandsheizkörper, die aus einem Ruhr und einem im Innern des Rohres angeordneten Stab bestehen, der an einem Ende mit dem Rohr leitend verbunden ist, während die freien Enden der beiden Teile der Stromzuführung dienen, dadurch für die Temperaturmessung brauchbar gemacht, daß die Stromzuleitungen zu dem aus SiIiciumcarbid bestehenden Heizrohr und zu dem aus Kohle, Graphit oder Metall bestehenden und am anderen Ende mit dem Siliciumearbid verschweißten Stab von der Stromquelle auf eine von der Thermdkraft des Heizkörpers !, beeinflußte Temperaturmeßeinrichtung umschaltbar sind. Infolge der kurzen Dauer der Limschaltung zum Zweck der Temperaturmessung bleibt die Ofentemperatur praktisch unverändert. Beine Vorhandensein mehrerer Heizkörper im Ofen werden diese nacheinander in beliebiger Reihenfolge auf den Meßkreis umgeschaltet, so daß man die Ofentemperatur an verschiedenen Stellen, wo Heizkörper liegen, ermitteln kann.According to the invention known resistance heating elements, which consist of a dysentery and a rod arranged inside the tube, the is conductively connected at one end to the pipe, while the free ends of the two Parts of the power supply are used, thus made usable for temperature measurement, that the power supply lines to the heating tube made of SiIiciumcarbid and to the made of carbon, graphite or metal and at the other end with the silicon carbide welded rod from the power source to one of the thermdkraft of the radiator !, influenced temperature measuring device are switchable. As a result of the short duration With the Lim circuit for the purpose of temperature measurement, the furnace temperature remains practical unchanged. If there are several radiators in the furnace, these will be displayed one after the other switched to the measuring circuit in any order so that the furnace temperature at various points where radiators are located.

Ein Ausführungsbeispiel eines Elektroofens gemäß der Erfindung ist iti der Abbildung schematisch dargestellt. Mit i ist die Ofenwand bezeichnet. Das Heizelement besteht aus dem Siliciumcarbidrohr v und dem zentral angeordneten Kohle-, Graphit- oder Metallstah 3. Beide sind bei 4. miteinander verschweißt. Mit 5 ist eine Füllung bezeichnet. 6 und ; sind die Zuleitungen zu dem Heizkörper. 8 ist ein Umschalter, mit dem der Heizkörper entweder auf die Stromquelle g oder auf das Meßinstrument io geschaltet werden kann, welches die Ofentemperatur angibt. Es sind mehrere Schalter 8 gezeichnet, wodurch angedeutet ist, daß mehrere Heizkörper wahlweise auf das Meßinstrument io geschaltet werden können, um die Ofentemperatur an verschiedenen Stellen zu messen.An embodiment of an electric furnace according to the invention is iti shown schematically in the figure. The furnace wall is denoted by i. That The heating element consists of the silicon carbide tube v and the centrally arranged carbon, Graphite or metal steel 3. Both are welded together at 4.. With 5 is called a filling. 6 and; are the supply lines to the radiator. 8 is a Changeover switch with which the radiator is either on the power source g or on the measuring instrument io can be switched, which indicates the oven temperature. There are several switches 8 drawn, which indicates that several radiators optionally on the measuring instrument io can be switched to measure the oven temperature at different points.

Claims (1)

PATENTANSPRUCH: Elektroofen mit elektrischen Widerstandsheizkörpern, die aus einem Rohr und einem im Innern des Rohres angeordneten Stab bestehen, der an einem Ende mit dem Rohr leitend verbunden ist_, während die freien Enden der beiden Teile k 'er Stromzuführungg dienen, dadurch geennzeichnet, - daß die Stromzuleitung zu dem aus Siliciumcarbid bestehenden Heizrohr (a) und zu dem aus Kohle, Graphit oder Metall bestehenden und am anderen 2 finde (4) mit dem Siliciumcarbidrohr verschweißten Stab (3) von der Stromquelle auf eine von der Thermökraft des Heizkörpers b.eeinflußte Temperaturmeßeinrichtung (io) umschaltbar ist.Claim: Electric furnace with electrical resistance heating elements, which consist of a tube and a rod arranged inside the tube, which is conductively connected at one end to the tube, while the free ends of the two parts are used for power supply, characterized in that - that the power supply to the heating pipe made of silicon carbide (a) and to the one made of carbon, graphite or metal and on the other 2 find (4) welded to the silicon carbide pipe rod (3) from the power source on one of the thermal power of the heater b.e Temperature measuring device (io) is switchable.
DES127571D 1937-06-12 1937-06-12 Electric furnace with electric resistance heating elements Expired DE717668C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES127571D DE717668C (en) 1937-06-12 1937-06-12 Electric furnace with electric resistance heating elements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES127571D DE717668C (en) 1937-06-12 1937-06-12 Electric furnace with electric resistance heating elements

Publications (1)

Publication Number Publication Date
DE717668C true DE717668C (en) 1942-02-20

Family

ID=7537524

Family Applications (1)

Application Number Title Priority Date Filing Date
DES127571D Expired DE717668C (en) 1937-06-12 1937-06-12 Electric furnace with electric resistance heating elements

Country Status (1)

Country Link
DE (1) DE717668C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0037788A1 (en) * 1980-04-09 1981-10-14 FOURS M.G.R. S.A. Société dite : Installation and process for melting metals or maintaining them in a molten state by means of an electrical immersion resistor heater
WO1995006399A1 (en) * 1993-08-26 1995-03-02 Abb Gadelius Kk Heating element
EP0718577A2 (en) * 1994-12-24 1996-06-26 Abb K.K. Resistance heated electric furnace
DE19630529A1 (en) * 1996-07-29 1998-02-05 Abb Research Ltd Heating element for vitrification furnace with heating rod

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0037788A1 (en) * 1980-04-09 1981-10-14 FOURS M.G.R. S.A. Société dite : Installation and process for melting metals or maintaining them in a molten state by means of an electrical immersion resistor heater
FR2480419A1 (en) * 1980-04-09 1981-10-16 Mgr Sa Fours INSTALLATION AND METHOD FOR MELTING OR MAINTAINING A METAL MATERIAL BY IMMERSION RESISTANT ELEMENT IN METAL
US5605645A (en) * 1992-08-26 1997-02-25 Abb Gadelius Kk Furnace heater surrounded by a ceramic tube and fastened with a ceramic flange
WO1995006399A1 (en) * 1993-08-26 1995-03-02 Abb Gadelius Kk Heating element
EP0718577A2 (en) * 1994-12-24 1996-06-26 Abb K.K. Resistance heated electric furnace
EP0718577A3 (en) * 1994-12-24 1997-06-04 Abb Kk Resistance heated electric furnace
DE19630529A1 (en) * 1996-07-29 1998-02-05 Abb Research Ltd Heating element for vitrification furnace with heating rod

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