DE622618C - Induction furnace without an iron core with a screen made of non-magnetizable, well-conductive metal - Google Patents

Induction furnace without an iron core with a screen made of non-magnetizable, well-conductive metal

Info

Publication number
DE622618C
DE622618C DEA73864D DEA0073864D DE622618C DE 622618 C DE622618 C DE 622618C DE A73864 D DEA73864 D DE A73864D DE A0073864 D DEA0073864 D DE A0073864D DE 622618 C DE622618 C DE 622618C
Authority
DE
Germany
Prior art keywords
screen
furnace
magnetizable
reactances
conductive metal
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
DEA73864D
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
Publication date
Priority to DEA73864D priority Critical patent/DE622618C/en
Application granted granted Critical
Publication of DE622618C publication Critical patent/DE622618C/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00Heating by electric, magnetic or electromagnetic fields
    • H05B6/02Induction heating
    • H05B6/22Furnaces without an endless core
    • H05B6/24Crucible furnaces

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Furnace Details (AREA)

Description

Induktionsofen ohne Eisenkern mit einem Schirm aus nichtmagnetisierbarem, ■gut leitendem Metall nach Patent 580 796, dadurch gekennzeichnet, daß der die Ofenspule ringförmig umgebende Schirm vorzugsweise längsi einer Mantellinie aufgeschnitten· und der dadurch gebildete Luftspalt durch eine oder mehrere Reaktanzen überbrückt ist.Induction furnace without iron core with a screen made of non-magnetizable, ■ good conductive metal according to patent 580 796, characterized in that the furnace coil ring-shaped surrounding screen preferably cut open along a surface line and the air gap thus formed is bridged by one or more reactances.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

BERLIN. GEDRUCKT IN DER REICHSDRUCKEREIBERLIN. PRINTED IN THE REICH PRINTING COMPANY

Claims (1)

gut leitendem Metallgood conductive metal Zusatz zum Patent 580Addition to patent 580 Das Hauptpatent 580 796 betrifft einen Induktionsofen ohne Eisenkern mit einem Gerüst aus magnetisierbarem Werkstoff, bei dem zwischen der Ofen'spule und' dem Gerüst ein aus nichtmagnetisierbarem, gut leitendem Metall bestehender Schirm angeordnet ist, dessen Stärke so gewählt ist, daß in ihm -der überwiegende Teil des in ihn eindringenden Streuflusses in Wärme umgewandelt wird.The main patent 580 796 relates to an induction furnace without an iron core with a framework made of magnetizable material, in which between the furnace coil and the framework screen made of non-magnetizable, highly conductive metal is arranged, the strength of which is chosen so that the predominant part of that which penetrates into him is in him Stray flux is converted into heat. Durch Anordnung solcher vorzugsweise aus Kupfer hergestellter Schirme kann auch eine übermäßige Erwärmung· oder magnetische Beeinflussung der in der Nähe des Induktionsofens befindlichen Werkzeuge und GeräteBy arranging such screens, preferably made of copper, a excessive heating · or magnetic influence in the vicinity of the induction furnace tools and equipment o. dgl. verhindert werden.o. The like. Be prevented. Es hat sich gezeigt, daß der Schirm verhältnismäßig warm wird, insbesondere, bei öfen mit großer Leistung sowie dann, wenn zur Verringerung der baulichen Abmessungen des Ofens sich die Notwendigkeit ergibt, den Schirm möglichst dicht an die Ofenspule heranzurücken.'It has been shown that the screen is relatively warm, especially when ovens with great performance, as well as when to reduce the structural dimensions of the furnace there is a need to place the screen as close as possible to the furnace coil move closer. ' Gemäß der Erfindung wird dieser Nachteil dadurch· behoben, daß der die Ofenspule ringförmig umgebende Schirm aufgeschnitten und der dadurch, gebildete Luftspalt durch eine oder mehrere Reaktanzen überbrückt wird'. Auf diese Weise wird der Blindwiderstand des gleichsam eine Kurzschluß- wicklung darstellenden Schirmes erhöht und infolge des dadurch verursachten geringeren Stromflusses im Schirm die in ihm erzeugte Wärme erheblich verringert. Vorzugsweise wird der ringförmige Schirm längs einer Mantellinie aufgeschnitten; der Schnitt kann aber nötigenfalls auch anders, beispielsweise entsprechend einer Schraubenlinie, gelegt werden.According to the invention, this disadvantage is eliminated in that the furnace coil ring-shaped surrounding screen cut open and the air gap formed by it through one or more reactances is bridged '. In this way, the reactance of the, as it were, a short-circuit Winding representing the screen increased and as a result of the resulting lower Current flow in the screen significantly reduces the heat generated in it. Preferably the ring-shaped screen is cut open along a surface line; the cut can but if necessary also placed differently, for example according to a helical line will. Die Erfindung wird an Hand der Zeichnungan einem Ausführungsbeispiel näher erläutert. Es stellen dar:The invention is illustrated with reference to the drawing an exemplary embodiment explained in more detail. They represent: Abb. ι eine Seitenansicht des Induktionsofens gemäß der Erfindung undFig. Ι a side view of the induction furnace according to the invention and Abb. 2 einen waagerechten Schnitt durch den Ofen nach Abb. 1.Fig. 2 shows a horizontal section through the furnace according to Fig. 1. In den Abbildungen ist mit 1 der das Behandlungsgut aufnehmende Tiegel bezeichnet. Dieser i'st von einer schematisch dargestellten Ofenspule 2 beliebiger Bauart umgeben. Um die Ofenspule herum ist der ringförmige Schirm 3 aus nichtmagnetisierbarem, gut leitendem Werkstoff angeordnet. Der Schirm ist längs einer Mantellinie 4 aufgeschnitten, so daß zwischen seinen benachbarten Kanten ein Luftspalt gebildet wird. Dieser ist durch drei Reaktanzen 5 überbrückt, welche mittels der Laschen 6 in irgendeiner Weise, etwa durch Schweißen, Löten, Verschrauben o. dgl., mit dem Schirm verbunden sind. Je nach Bedarf können auch mehr als drei Reaktanzen, gegebenenfalls aber auch weniger, vorgesehen werden. Im Ausführungebeispiel wird jede der Reaktanzen durch eine einzige Windung gebildet. Auch die Windungszahl kann im Bedarfsfalle größer gewählt werden.In the figures, 1 is the item to be treated receiving crucibles. This is one of the diagrams shown Surrounding furnace coil 2 of any type. Around the furnace coil is the ring-shaped one Shield 3 arranged from non-magnetizable, highly conductive material. The screen is cut along a surface line 4, so that between its adjacent edges an air gap is formed. This is bridged by three reactances 5, which by means of of the tabs 6 in any way, for example by welding, soldering, screwing or the like., connected to the screen. Depending on requirements, more than three reactances, but possibly also less, are provided. In the execution example, each of the reactances formed by a single turn. The number of turns can also be used in Larger if necessary.
DEA73864D Induction furnace without an iron core with a screen made of non-magnetizable, well-conductive metal Expired DE622618C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA73864D DE622618C (en) Induction furnace without an iron core with a screen made of non-magnetizable, well-conductive metal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA73864D DE622618C (en) Induction furnace without an iron core with a screen made of non-magnetizable, well-conductive metal

Publications (1)

Publication Number Publication Date
DE622618C true DE622618C (en) 1935-12-02

Family

ID=6945995

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA73864D Expired DE622618C (en) Induction furnace without an iron core with a screen made of non-magnetizable, well-conductive metal

Country Status (1)

Country Link
DE (1) DE622618C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE969445C (en) * 1953-12-17 1958-06-04 Bbc Brown Boveri & Cie Process for manufacturing a liquid cooled inductor
DE1092575B (en) * 1957-09-04 1960-11-10 Wild Barfield Electr Furnaces Induction furnace

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE969445C (en) * 1953-12-17 1958-06-04 Bbc Brown Boveri & Cie Process for manufacturing a liquid cooled inductor
DE1092575B (en) * 1957-09-04 1960-11-10 Wild Barfield Electr Furnaces Induction furnace

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