DE489473C - Electric heating plate - Google Patents

Electric heating plate

Info

Publication number
DE489473C
DE489473C DES86783D DES0086783D DE489473C DE 489473 C DE489473 C DE 489473C DE S86783 D DES86783 D DE S86783D DE S0086783 D DES0086783 D DE S0086783D DE 489473 C DE489473 C DE 489473C
Authority
DE
Germany
Prior art keywords
electric heating
heating plate
coefficient
thermal expansion
mass
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
DES86783D
Other languages
German (de)
Inventor
Ing Rudolf Brey
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 Elektrowaerme GmbH
Original Assignee
Siemens Elektrowaerme 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 Siemens Elektrowaerme GmbH filed Critical Siemens Elektrowaerme GmbH
Priority to DES86783D priority Critical patent/DE489473C/en
Application granted granted Critical
Publication of DE489473C publication Critical patent/DE489473C/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
    • H05B3/68—Heating arrangements specially adapted for cooking plates or analogous hot-plates
    • H05B3/688—Fabrication of the plates

Landscapes

  • Resistance Heating (AREA)

Description

Elektrische Heizplatte Die Isolationsmasse elektrischer Heizplatten wird aus keramischen oder mineralischen Produkten hergestellt. Man benutzt dabei vielfach Schamotte, Magnesit und ähnliche Stoffe. Die meisten dieser Stoffe haben den Nachteil, daß ihr Wärmeausdehnungskoeffizient nicht mit dem der Ummantelung dieser Masse, die aus Eisen oder einer Speziallegierung bestehen kann, übereinstimmt. Dieser Unterschied in den Wärmeausdehnungskoeffizienten hat zur Folge, daß sich die Isoliermasse von dem metallischen Teil der Platte löst, wenn nicht durch besondere Konstruktionsmittel die Masse an der Ummantelung gehalten wird.Electric heating plate The insulating mass of electrical heating plates is made from ceramic or mineral products. You use it often chamotte, magnesite and similar substances. Most of these substances have the disadvantage that their coefficient of thermal expansion does not match that of the jacket this mass, which can consist of iron or a special alloy, corresponds. This difference in the coefficient of thermal expansion has the consequence that separates the insulating compound from the metallic part of the plate, if not by special means Construction means the mass is held on the casing.

Erfindungsgemäß wird der Wärmeausdehnungskoeffizient der Isoliermasse dadurch dem Wert des Wärmeausdehnungskoeffizienten des in Frage kommenden Gegenmaterials angepaßt, daß ihr je nach Bedarf ein entsprechender Zusatz von Bauxit beigefügt wird. Durch diesen Zusatz wird eine Lösung der Masse von ihrer Ummantelung vermieden.According to the invention, the coefficient of thermal expansion of the insulating compound thereby the value of the coefficient of thermal expansion of the counter material in question adapted so that an appropriate addition of bauxite is added to it as required will. This addition prevents the compound from becoming detached from its casing.

Claims (1)

PATENTANSPRUCH: Elektrische Heizplatte, dadurch gekennzeichnet, daß der Wärmeausdehnungskoeffizient ihrer Isoliermasse, die aus keramischen oder mineralischen Grundstoffen besteht, durch einen Zusatz von Bauxit dem Ausdehnungskoeffizienten der Ummantelung dieser Masse angepaßt ist.PATENT CLAIM: Electric heating plate, characterized in that the coefficient of thermal expansion of their insulating compound, which is made of ceramic or mineral Basic materials consists, through the addition of bauxite, the expansion coefficient the sheathing of this mass is adapted.
DES86783D 1928-07-28 1928-07-28 Electric heating plate Expired DE489473C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES86783D DE489473C (en) 1928-07-28 1928-07-28 Electric heating plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES86783D DE489473C (en) 1928-07-28 1928-07-28 Electric heating plate

Publications (1)

Publication Number Publication Date
DE489473C true DE489473C (en) 1930-01-17

Family

ID=7513267

Family Applications (1)

Application Number Title Priority Date Filing Date
DES86783D Expired DE489473C (en) 1928-07-28 1928-07-28 Electric heating plate

Country Status (1)

Country Link
DE (1) DE489473C (en)

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