DE358424C - Metal melting furnace with combined induction and arc heating - Google Patents

Metal melting furnace with combined induction and arc heating

Info

Publication number
DE358424C
DE358424C DER51161D DER0051161D DE358424C DE 358424 C DE358424 C DE 358424C DE R51161 D DER51161 D DE R51161D DE R0051161 D DER0051161 D DE R0051161D DE 358424 C DE358424 C DE 358424C
Authority
DE
Germany
Prior art keywords
metal melting
melting furnace
arc
transformer
heating
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
DER51161D
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.)
Rheinische Metallwaaren and Maschinenfabrik AG
Original Assignee
Rheinische Metallwaaren and Maschinenfabrik AG
Publication date
Priority to DER51161D priority Critical patent/DE358424C/en
Application granted granted Critical
Publication of DE358424C publication Critical patent/DE358424C/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D11/00—Arrangement of elements for electric heating in or on furnaces
    • F27D11/06—Induction heating, i.e. in which the material being heated, or its container or elements embodied therein, form the secondary of a transformer
    • 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
    • H05B11/00—Heating by combined application of processes covered by two or more of groups H05B3/00 - H05B7/00

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • General Induction Heating (AREA)
  • Furnace Details (AREA)

Description

rdetallschmelzofen mit kombinierter Induktions- und Lichtbogenheizung. Die Erfindung betrifft einen Metallschmelzofen mit kombinierter Induktions- und Lichtbogenheizung. Die an das Netz von Elektrizitätswerken unmittelbar angeschlossenen Induktionsöfen verursachen so starke Phasenverschiebungen im Netz, daß dadurch vielfach erhebliche Betriebsstörungen entstehen. Manche Elektrizitätswerke gestatten daher nicht den Anschluß von Induktionsöfen. Im Betrieb von Lichtbogenöfen treten starke Stromstöße auf, die im Hauptstromnetz ebenfalls lästig empfunden werden und namentlich in den Stunden größten Stromverbrauches sehr unangenehm wirken.rdetall melting furnace with combined induction and arc heating. The invention relates to a metal melting furnace with combined induction and Arc heating. Those directly connected to the network of electricity companies Induction furnaces cause such strong phase shifts in the network that they do so many times over significant operational disruptions arise. Some electricity companies therefore allow not the connection of induction ovens. In the operation of electric arc furnaces there are strong Power surges, which are also perceived annoying in the main power grid, and specifically are very uncomfortable in the hours of greatest power consumption.

Durch die Schaltung nach der Erfindung wird ermöglicht, jede Heizungsart für sich auszuschalten, um jederzeit mit derjenigen Heizung arbeiten zu können, die am wenigsten stört, und zur Zeit geringen Stromverbrauches beide Heizungen gleichzeitig benutzen zu können. Der Erfindung gemäß ist die Lichbogenheizung durch einen Transformator an die Primärwicklung der Induktionsheizung angeschlossen. Durch Kurzschließen der die Primärwicklung mit dem Transformator der Lichtbogenheizung verbindenden Leitung wird die Lichtbogenheizung ausgeschaltet, dagegen durch Kurzschließen eines Teiles der Primärwicklung die Induktionsheizung größtenteils ausgeschaltet.The circuit according to the invention enables any type of heating switch off for yourself in order to be able to work with the heater at any time, which bothers the least, and at the time low power consumption both heaters at the same time to be able to use. According to the invention, the arc heating is by a transformer connected to the primary winding of the induction heater. By shorting the the line connecting the primary winding to the arc heater transformer the arc heating is switched off, but by short-circuiting a part of the primary winding, the induction heating is largely switched off.

Die Zeichnung veranschaulicht ein Ausführungsbeispiel der Erfindung.The drawing illustrates an embodiment of the invention.

Die an das Hauptstromnetz a unmittelbar angeschlossene Primärwicklung der Induktionsheizung ist in zwei auf dem Magnetjoch k angeordneten Spulen e, und e, unterteilt. An die Primärwicklung ist der Transformator t der Lichtbogenheizung angeschlossen, die durch die beiden Elektroden gi, g, über dem Metallbad f gebildet wird. Durch Schließen eines Schalters s, in der zum Transformator t führenden Leitung wird der Transformator und damit die Lichtbogenheizung ausgeschaltet. Durch Schließen eines Schalters s2 wird die Primärspule e, kurzgeschlossen und dadurch ein großer Teil der Induktionsheizung ausgeschaltet. Die miteingeschaltete Primärspule e2 dient dann zur Aufnahme der durch die Lichtbogenheizung verursachten Stromstöße. In der Zeichnung sind beide Schalter geöffnet dargestellt, so daß also beide Heizungen gleichzeitig in Betrieb sind.The primary winding directly connected to the main power network a the induction heating is in two coils e, and arranged on the magnet yoke k e, divided. The transformer t of the arc heater is connected to the primary winding connected, formed by the two electrodes gi, g, above the metal bath f will. By closing a switch s in the line leading to the transformer t the transformer and thus the arc heater are switched off. By closing of a switch s2, the primary coil e, is short-circuited and thus a large one Part of the induction heating switched off. The switched-on primary coil e2 is used then to absorb the power surges caused by the arc heater. In the Drawing both switches are shown open, so that both heaters are in operation at the same time.

Die Primärspule e2 kann natürlich auch in der gleichen Anordnung wie die Spule e, mit dem Transformator t verbunden werden, so daß beide Spulen e1 und e2 und dadurch die ganze Induktionsheizung ausschaltbar sind.The primary coil e2 can of course also be in the same arrangement as the coil e, to be connected to the transformer t, so that both coils e1 and e2 and thereby the entire induction heating can be switched off.

Claims (1)

PATENT-ANSpRÜcHE: i. Metallschmelzofen mit kombinierter Induktions- und Lichtbogenheizung, dadurch gekennzeichnet, daß die Lichtbogenheizung durch einen besonderen, für sich abschaltbaren Transformator an die Primärwicklung der Induktionsheizung angeschlossen ist, indem die Primärwicklung des Transformators mit derjenigen der Induktionsheizung verbunden ist. a. Metallschmelzofen nach Anspruch i, dadurch gekennzeichnet, daß der Transformator außerhalb des Magnetjoches der Induktionsheizung angeordnet ist. 3. Verfahren zum Betriebe von Metallschmelzöfen nach Anspruch i, dadurch gekennzeichnet, daß durch Kurzschließen der die Primärwicklung mit dem Transformator der Lichtbogenheizung verbindenden Leitung die Lichtbogenheizung ausgeschaltet, dagegen durchKurzschließen eines Teiles der Primärwicklung die Induktionsheizung ganz oder teilweise ausgeschaltet wird.PATENT CLAIMS: i. Metal melting furnace with combined induction and arc heating, characterized in that the arc heating by a special transformer to the primary winding of the induction heating, which can be switched off by itself connected by connecting the primary winding of the transformer with that of the Induction heating is connected. a. Metal melting furnace according to claim i, characterized in that that the transformer is arranged outside the magnetic yoke of the induction heating is. 3. A method for operating metal melting furnaces according to claim i, characterized in that that by short-circuiting the primary winding with the transformer of the arc heater connecting line, the arc heater is switched off, but by short-circuiting part of the primary winding, the induction heating completely or partially switched off will.
DER51161D Metal melting furnace with combined induction and arc heating Expired DE358424C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DER51161D DE358424C (en) Metal melting furnace with combined induction and arc heating

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DER51161D DE358424C (en) Metal melting furnace with combined induction and arc heating

Publications (1)

Publication Number Publication Date
DE358424C true DE358424C (en) 1922-09-09

Family

ID=7408977

Family Applications (1)

Application Number Title Priority Date Filing Date
DER51161D Expired DE358424C (en) Metal melting furnace with combined induction and arc heating

Country Status (1)

Country Link
DE (1) DE358424C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE975180C (en) * 1949-01-27 1961-09-21 Otto Junker Fa Electric melting furnace for small pieces of steel or small pieces of cast iron

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE975180C (en) * 1949-01-27 1961-09-21 Otto Junker Fa Electric melting furnace for small pieces of steel or small pieces of cast iron

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