AT99363B - Electric radiator and process for its manufacture. - Google Patents

Electric radiator and process for its manufacture.

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Publication number
AT99363B
AT99363B AT99363DA AT99363B AT 99363 B AT99363 B AT 99363B AT 99363D A AT99363D A AT 99363DA AT 99363 B AT99363 B AT 99363B
Authority
AT
Austria
Prior art keywords
sheet metal
radiator
manufacture
metal jacket
insulation
Prior art date
Application number
Other languages
German (de)
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
Application granted granted Critical
Publication of AT99363B publication Critical patent/AT99363B/en

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  • Surface Heating Bodies (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Elektrischer Heizkörper und Verfahren zu seiner Herstellung. 



   Man kann Mikanit oder andere aus einzelnen Schuppen, Fasern oder Fäden aus Glimmer oder anderen nicht verkohlenden Stoffen und geeigneten organischen Bindemitteln zusammengesetzte Isolationsmaterialien, deren Anwendung sonst in der Elektrotechnik wegen ihrer guten Isolationseigenschaften und wegen der leichten Formgebung vorteilhaft ist, für die Herstellung von Heizkörpern weniger gut gebrauchen. Bald nach der Inbetriebnahme des Heizkörpers treten oft Kurzschlüsse auf und ein nicht   unbeträchtlicher   Teil der Heizkörper muss als unbrauchbar ausgeschieden werden. 



   Brennt man aber erfindungsgemäss den Heizkörper vor der Ingebrauchnahme aus, so verschwinden diese Übelstände. Deren Ursache liegt nämlich, wie eingehende Untersuchungen gezeigt haben, darin, dass die bei der Herstellung der Isolationsmaterialien verwendeten organischen Bindemittel, wie z. B. 



  Schellack, beim Gebrauch    des'Heizkörpers   verkohlen    und. dàdurch   leitend werden. Wie die Versuche bewiesen haben, lassen sie, sich aber durch Erhitzung unter Luftzutritt leicht herausbrennen, wodurch der ganze   Übelstand   in   überraschend   sicherer Weise beseitigt werden kann. 
 EMI1.1 
 des Heizkörpers    gelocht.'  
Besonders leicht treten die   Kurzschlüsse   an den Umbiegestellen des Blechmantels auf. Die verkohlten Schellackreste,   die zwischen   den Schichten der Glimmerteilchen liegen, bilden gerade an dieser Stelle oft eine unmittelbare'elektrische Verbindung zwischen dem Heizdraht und dem Blechmantel. 



  Um hier eine Verbrennung zu gewährleisten, wird der Blechmantel an den Umbiegestellen mit den Luft- öffnungen 6 versehen. 



   Fig. 2 zeigt einen Heizkörper, der nur auf der einen. Seite mit einem Blechband 5 verkleidet ist. 



  Dieses wird durch die umgebogenen Kanten 7 festgehalten. Da die eine Seite dieses Heizkörpers dem Luftzutritt frei zugänglich ist, genügt eine Lochung an den Umbiegestellen 6. 



   PATENT-ANSPRÜCHE :
1. Verfahren zur Herstellung elektrischer Heizkörper, bei denen der Heizwiderstand in Isolationsmaterial eingebettet ist, das aus durch organische Bindemittel vereinigten Fasern, Fäden oder Schuppen aus Glimmer oder anderen nicht verkohlenden Stoffen besteht, dadurch gekennzeichnet, dass die innerhalb des Isolationsmaterials als Bindemittel vorhandenen organischen Bestandteile (z. B. Schellack) vor der Ingebrauchnahme des Heizkörpers herausgebrannt werden. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  Electric radiator and process for its manufacture.



   Micanite or other insulation materials composed of individual scales, fibers or threads made of mica or other non-charring substances and suitable organic binders, whose use in electrical engineering is advantageous because of their good insulation properties and because of their easy shaping, for the manufacture of radiators is less common good use. Short circuits often occur soon after the radiator has been put into operation and a not inconsiderable part of the radiator has to be rejected as unusable.



   If, according to the invention, the radiator is burned out before it is used, these inconveniences disappear. This is because, as detailed studies have shown, the cause of this is that the organic binders used in the production of the insulation materials, such as B.



  Shellac, charring when using the radiator and. thereby become conductive. As the experiments have shown, they can, however, easily be burned out by heating with the admission of air, whereby the whole problem can be eliminated in a surprisingly safe manner.
 EMI1.1
 of the radiator perforated. '
The short circuits occur particularly easily at the bending points of the sheet metal jacket. The charred shellac residues that lie between the layers of mica particles often form a direct electrical connection between the heating wire and the sheet metal jacket at this point.



  In order to ensure combustion here, the sheet metal jacket is provided with air openings 6 at the bending points.



   Fig. 2 shows a radiator that is only on one. Side is covered with a sheet metal band 5.



  This is held in place by the bent edges 7. Since one side of this heating element is freely accessible to air, a perforation at the bending points 6 is sufficient.



   PATENT CLAIMS:
1. A method for producing electrical heating elements in which the heating resistor is embedded in insulation material which consists of fibers, threads or flakes of mica or other non-charring substances combined by organic binders, characterized in that the organic components present as binders within the insulation material (e.g. shellac) must be burned out before using the radiator.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

2. Elektrischer Heizkörper nach Anspruch 1 mit durch einen Blechmantel umldeideter Isolation, dadurch gekennzeichnet, dass der Blechmantel gelocht ist. <Desc/Clms Page number 2> 2. Electrical radiator according to claim 1 with insulation umldeideter through a sheet metal jacket, characterized in that the sheet metal jacket is perforated. <Desc / Clms Page number 2> 3. Elektrischer Heizkörper nach Anspruch 1 mit durch einen Blechmantel umkleideter Isolation, dadurch gekennzeichnet, dass der Blechmantel an der Stelle, an der er um den Rand der Isolation umgebogen ist, gelocht ist. EMI2.1 3. Electrical radiator according to claim 1 with insulation encased by a sheet metal jacket, characterized in that the sheet metal jacket is perforated at the point at which it is bent around the edge of the insulation. EMI2.1
AT99363D 1923-01-08 1923-12-28 Electric radiator and process for its manufacture. AT99363B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE99363X 1923-01-08

Publications (1)

Publication Number Publication Date
AT99363B true AT99363B (en) 1925-03-10

Family

ID=5647151

Family Applications (1)

Application Number Title Priority Date Filing Date
AT99363D AT99363B (en) 1923-01-08 1923-12-28 Electric radiator and process for its manufacture.

Country Status (1)

Country Link
AT (1) AT99363B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4665308A (en) * 1983-05-02 1987-05-12 Lange International S.A. Electrical heating element intended to be incorporated in an inner lining of an item of clothing or accessory intended to be placed against a part of the human body

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4665308A (en) * 1983-05-02 1987-05-12 Lange International S.A. Electrical heating element intended to be incorporated in an inner lining of an item of clothing or accessory intended to be placed against a part of the human body

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