DE573450C - Process for the production of electric radiators - Google Patents

Process for the production of electric radiators

Info

Publication number
DE573450C
DE573450C DEA56329D DEA0056329D DE573450C DE 573450 C DE573450 C DE 573450C DE A56329 D DEA56329 D DE A56329D DE A0056329 D DEA0056329 D DE A0056329D DE 573450 C DE573450 C DE 573450C
Authority
DE
Germany
Prior art keywords
insulation material
production
powdery
electric radiators
radiators
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
DEA56329D
Other languages
German (de)
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.)
AEG AG
Original Assignee
AEG 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 AEG AG filed Critical AEG AG
Application granted granted Critical
Publication of DE573450C publication Critical patent/DE573450C/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/16Rigid-tube cables

Description

Die Erfindung betrifft ein Verfahren zur Herstellung elektrischer Heizkörper, die aus zwei konzentrisch zueinander liegenden Metallrohren bestehen, in deren Zwischenraum ein in pulverförmiges, verdichtetes Isolationsmaterial eingebetteter Holzleiter angeordnet ist. Das Verfahren ist dadurch· gekennzeichnet, daß das Isolationsmaterial durch Hämmern, Walzen o. dgl. des äußeren Metallmantels verdichtet wird und gleichzeitig von dem inneren Metallmantel, ζ. B. durch einen eingeschobenen Dorn, mechanische Änderungen abgehalten werden. Die Bearbeitung des Heizkörpers von der Atißenseite her zum Zwecke der Verdichtung des Isolationsmaterials ermöglicht es," ohne Schwierigkeit an allen Stellen gleiche Dichte des Isolationsmaterials zu erzielen, und ist besonders einfach. Durch den eingeschobenen Dorn wird die Grundform des Heizkörpers aufrechterhalten, ohne daß bei dem Verdichtungsprozeß besonders darauf Rücksicht genommen werden muß.The invention relates to a method for producing electric heating elements, which are made from consist of two concentric metal pipes, in the space between them a wooden ladder embedded in powdery, compacted insulation material is arranged is. The method is characterized in that the insulation material is hammered, Rolls o. The like. The outer metal shell is compressed and at the same time of the inner metal jacket, ζ. B. by an inserted mandrel, mechanical changes be held. The processing of the radiator from the side to the The purpose of compaction of the insulation material allows "without difficulty to achieve the same density of the insulation material in all places, and is particularly easy. The inserted mandrel maintains the basic shape of the radiator, without having to pay special attention to this in the compression process.

Im einzelnen wird bei der Herstellung wie folgt verfahren: Man ordnet zunächst den in der Regel schraubenförmig gewickelten Heizdraht in dem von den beiden konzentrisch zueinander liegenden Rohren gebildeten Raum an und füllt diesen dann mit pulverförmigem Isolationsmaterial aus, wobei darauf zu achten ist, daß der Heizdraht mit den metallischen Rohren nicht in Berührung kommt. Nun wird das Isolationsmaterial, z. B. Magnesiumoxyd, um den Wärmedurchgangswiderstand vom Heizdraht zu den Metallroh- ren herabzusetzen und den Heizdraht in seiner Lage zu sichern, dem Verdichtungsprozeß unterzogen. Die erste Verdichtung erhält das pulverförmige Isolationsmaterial in bekannter Weise durch Erschüttern des Heizkörpers. Darauf wird der ringförmige Zwischenraum abgeschlossen, in das innere Metallrohr ein Dorn eingeschoben, der mechanische Formänderungen von ihm abhält, und schließlich der äußere Metallmantel so lange gehämmert bzw. gewalzt, bis sich das pulverförmige Isolationsmaterial durch Verringerung des lichten, vom Außenmantel umschlossenen Querschnittes in ausreichendem Maße verdichtet hat. _In detail, the procedure for production is as follows: First, the usually helically wound heating wire in which of the two is concentric to each other lying pipes formed space and then fills this with powdery Isolation material, making sure that the heating wire with does not come into contact with the metal pipes. Now the insulation material, e.g. B. Magnesium oxide to reduce the heat transfer resistance from the heating wire to the reduce ren and secure the heating wire in its position, the compression process subjected. The first compression is given to the powdery insulation material in known way by shaking the radiator. Thereupon the annular space becomes completed, inserted a mandrel into the inner metal tube, which prevents mechanical changes in shape from it, and Finally, the outer metal jacket is hammered or rolled until the powdery Insulation material by reducing the clear, enclosed by the outer jacket Compressed cross-section to a sufficient extent. _

Derartige Heizkörper eignen sich namentlich" für Heißwasserspeicher, Durchlauferhitzer und Muffelöfen.Such radiators are particularly suitable "for hot water storage tanks, instantaneous water heaters and muffle furnaces.

Es sei noch erwähnt, daß das Verfahren zum Verdichten des pulverförmigen Isolationsmaterials durch Hämmern, Walzen o. dgl.It should also be mentioned that the method for compacting the powdery insulation material by hammering, rolling or the like.

zur Herstellung von t Stabheizkörpern, bei denen der Heizdraht" in einem metallischen Rohr konzentrisch angeordnet und von diesem durch pulverförmiges Material isoliert ist, bereits angewendet wurde. Jedoch besteht bei dieser Bauart nicht die Gefahr, daß beL dem Verdichtungsprozeß die Grundform des Heizkörpers beeinträchtigt wird, da sie im Gegensatz zum Erfindungsgegenstand ίο einen vollen Querschnitt besitzt,, so daß es einer Rücksichtnahme auf die besonderen Verhältnisse, die bei rohrförmigen Heizkörpern vorliegen, ohnedies nicht bedarf.for the production of t rod radiators, in which the heating wire "in a metallic Tube arranged concentrically and isolated from it by powdery material has already been applied. However, with this type of construction there is no risk that beL the compression process, the basic shape of the radiator is affected because it In contrast to the subject matter of the invention ίο has a full cross-section, so that it consideration of the special conditions that exist with tubular radiators exist, in any case not required.

Claims (1)

Patentanspruch:Claim: Verfahren zur Herstellung elektrischer Heizkörper, die aus zwei konzentrisch zueinander liegenden Metallrohren bestehen, in deren Zwischenraum ein in pulverförmiges, verdichtetes Isolationsmaterial eingebetteter Heizleiter angeordnet ist, dadurch gekennzeichnet, daß das Isolationsmaterial durch Hämmern, Walzen o. dgl. des äußeren Metallmantels verdichtet und gleichzeitig von dem inneren Metallmantel, z. B. durch einen eingeschobenen Dorn,. mechanische Änderungen abgehalten werden.Process for making electric radiators, consisting of two concentric to each other lying metal pipes exist, in the space between which is embedded in a powdery, compacted insulation material Heating conductor is arranged, characterized in that the insulation material by hammering, rolling or the like. of the outer metal jacket compressed and at the same time from the inner metal jacket, z. B. by an inserted mandrel. mechanical changes are held. ofeDnt;CKT in nut! nEicnstuiuRKfentilofeDnt; CKT in groove! EQUIPMENT VALVE
DEA56329D 1928-01-03 1928-12-28 Process for the production of electric radiators Expired DE573450C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB666880X 1928-01-03

Publications (1)

Publication Number Publication Date
DE573450C true DE573450C (en) 1933-04-01

Family

ID=10491381

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA56329D Expired DE573450C (en) 1928-01-03 1928-12-28 Process for the production of electric radiators

Country Status (2)

Country Link
DE (1) DE573450C (en)
FR (1) FR666880A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE750341C (en) * 1935-09-25 1945-01-06 Electric heating element for hotplates u. like
DE1104086B (en) * 1955-04-09 1961-04-06 Bleckmann & Co Electric tubular heating element for heating water and other liquids containing scale-forming substances beyond the temperature range in which scale is deposited on its jacket pipe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE750341C (en) * 1935-09-25 1945-01-06 Electric heating element for hotplates u. like
DE1104086B (en) * 1955-04-09 1961-04-06 Bleckmann & Co Electric tubular heating element for heating water and other liquids containing scale-forming substances beyond the temperature range in which scale is deposited on its jacket pipe

Also Published As

Publication number Publication date
FR666880A (en) 1929-10-07

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