EP0143144A3 - Arrangement and method for heating by induction with several inductor workpieces, in particular tubes and rods - Google Patents

Arrangement and method for heating by induction with several inductor workpieces, in particular tubes and rods Download PDF

Info

Publication number
EP0143144A3
EP0143144A3 EP84102925A EP84102925A EP0143144A3 EP 0143144 A3 EP0143144 A3 EP 0143144A3 EP 84102925 A EP84102925 A EP 84102925A EP 84102925 A EP84102925 A EP 84102925A EP 0143144 A3 EP0143144 A3 EP 0143144A3
Authority
EP
European Patent Office
Prior art keywords
source
disconnected
individual resonant
resonant circuit
induction
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.)
Granted
Application number
EP84102925A
Other languages
German (de)
Other versions
EP0143144A2 (en
EP0143144B1 (en
Inventor
Hans Matthes
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.)
SMS Elotherm GmbH
Original Assignee
AEG Elotherm 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 AEG Elotherm GmbH filed Critical AEG Elotherm GmbH
Priority to AT84102925T priority Critical patent/ATE35760T1/en
Publication of EP0143144A2 publication Critical patent/EP0143144A2/en
Publication of EP0143144A3 publication Critical patent/EP0143144A3/en
Application granted granted Critical
Publication of EP0143144B1 publication Critical patent/EP0143144B1/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
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/06—Control, e.g. of temperature, of power
    • H05B6/08—Control, e.g. of temperature, of power using compensating or balancing arrangements
    • 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
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/06—Control, e.g. of temperature, of power

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Induction Heating (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

1. Arrangement for heating workpieces (W), especially tubes or rods, by induction, using a plurality of inductors (L1 , L2 , Ln ) which with capacitors (C1 , C2 , C3 ) form a plurality of individual resonant circuits (L1 , C1 ; L2 , C2 , Ln , Cn ) powered by a common a.c. source, the current supply to said resonant circuits being adapted to be connected and disconnected individually and/or in groups by a controlling system (V, E) in response to a deviation in the temperature of the workpiece, said controlling system (V, E) only connecting the supply of current to one or more individual resonant circuits if the voltage from the a.c. source disappears at least for the switching instant, characterised in that the a.c. source is a controlled anti-resonant circuit converter (U) the rectifier valves of which can be moved into the blocking state by the controlling system (V, E) containing a device (GW) for setting the delay angle of the rectifier valves whenever an individual resonant circuit (L1 , C1 ; L2 , C2 ; Ln , Cn ) is to be connected or the last individual resonant circuit in operation is to be disconnected, but which, however, can only be operated to give a reduced output voltage from the a.c. source if one of the connected individual resonant circuits is to be disconnected, said reduced output voltage corresponding roughly to the reduced power output of the a.c. source expected after the individual resonant circuit is disconnected.
EP84102925A 1983-11-26 1984-03-16 Arrangement and method for heating by induction with several inductor workpieces, in particular tubes and rods Expired EP0143144B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84102925T ATE35760T1 (en) 1983-11-26 1984-03-16 DEVICE AND PROCESS FOR INDUCTION HEATING OF WORKPIECES, ESPECIALLY TUBES OR RODS, WITH SEVERAL INDUCTORS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3342889 1983-11-26
DE19833342889 DE3342889A1 (en) 1983-11-26 1983-11-26 METHOD FOR INDUCTIVE HEATING OF WORKPIECES

Publications (3)

Publication Number Publication Date
EP0143144A2 EP0143144A2 (en) 1985-06-05
EP0143144A3 true EP0143144A3 (en) 1985-07-03
EP0143144B1 EP0143144B1 (en) 1988-07-13

Family

ID=6215386

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84102925A Expired EP0143144B1 (en) 1983-11-26 1984-03-16 Arrangement and method for heating by induction with several inductor workpieces, in particular tubes and rods

Country Status (4)

Country Link
EP (1) EP0143144B1 (en)
AT (1) ATE35760T1 (en)
DE (2) DE3342889A1 (en)
ES (1) ES532148A0 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3815686A1 (en) * 1988-05-07 1989-11-16 Licentia Gmbh Parboil method in particular in domestic induction-cooking appliances
DE4032683C3 (en) * 1990-10-15 1996-06-13 Santrade Ltd Device for forming drops
DE4038560A1 (en) * 1990-12-04 1992-06-11 Licentia Gmbh Power control of microwave and induction heating cooker - involves microprocessor limiting load on inverter by switching of microwave oscillator and regulation of induction energy
EP1280381A3 (en) * 2001-07-25 2005-12-21 I. A. S. Induktions- Anlagen + Service GmbH & Co. KG Inductive heating device and process of billets with a billets heating coil

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3008025A (en) * 1958-08-09 1961-11-07 Deutsche Edelstahlwerke Ag Method of progressively induction heating metal strip and an apparatus for performing the same
FR2271735A1 (en) * 1974-05-17 1975-12-12 Matsushita Electric Ind Co Ltd
DE2622825A1 (en) * 1976-05-21 1977-12-01 Siemens Ag Continuous induction heating of wire - where electronic circuit provides accurate heating despite variations in inlet temp. of wire
DE3040820A1 (en) * 1980-10-30 1982-05-13 Aeg-Elotherm Gmbh, 5630 Remscheid Inductive heating appts. for e.g. welded pipes - has controlled rectifier networks supplying adjacent inductors coupled to common firing control
DE3220142A1 (en) * 1982-05-28 1983-12-01 Aeg-Elotherm Gmbh, 5630 Remscheid Device for inductive heating of workpieces, having a plurality of inductors

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1192343B (en) * 1962-03-27 1965-05-06 Siemens Ag Device for inductive heating of, in particular, rod-shaped workpieces
AT368824B (en) * 1978-04-11 1982-11-10 Vertina Anstalt DEVICE FOR INDUCTIVE HEATING OF ROD-SHAPED WORKPIECES

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3008025A (en) * 1958-08-09 1961-11-07 Deutsche Edelstahlwerke Ag Method of progressively induction heating metal strip and an apparatus for performing the same
FR2271735A1 (en) * 1974-05-17 1975-12-12 Matsushita Electric Ind Co Ltd
DE2622825A1 (en) * 1976-05-21 1977-12-01 Siemens Ag Continuous induction heating of wire - where electronic circuit provides accurate heating despite variations in inlet temp. of wire
DE3040820A1 (en) * 1980-10-30 1982-05-13 Aeg-Elotherm Gmbh, 5630 Remscheid Inductive heating appts. for e.g. welded pipes - has controlled rectifier networks supplying adjacent inductors coupled to common firing control
DE3220142A1 (en) * 1982-05-28 1983-12-01 Aeg-Elotherm Gmbh, 5630 Remscheid Device for inductive heating of workpieces, having a plurality of inductors

Also Published As

Publication number Publication date
DE3342889A1 (en) 1985-06-05
ES8502308A1 (en) 1985-01-01
ATE35760T1 (en) 1988-07-15
DE3342889C2 (en) 1987-04-23
ES532148A0 (en) 1985-01-01
EP0143144A2 (en) 1985-06-05
EP0143144B1 (en) 1988-07-13
DE3472747D1 (en) 1988-08-18

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