Global Patent Index - EP 0981931 A1

EP 0981931 A1 2000-03-01 - INDUCTION OVEN FOR MELTING METALS

Title (en)

INDUCTION OVEN FOR MELTING METALS

Title (de)

INDUKTIONOFEN ZUM SCHMELZEN VON METALLEN

Title (fr)

FOUR A INDUCTION POUR LA FUSION DE METAUX

Publication

EP 0981931 A1 (FR)

Application

EP 98925719 A

Priority

  • FR 9800971 W
  • FR 9706279 A

Abstract (en)

[origin: WO9853642A1] The invention concerns an induction heating device to raise the temperature of metals for melting or hot machining while considerably saving energy, increasing yield and observing current safety standards. Said device (10) comprises at least a cavity (11) arranged to receive the metals and at least two magnetic yokes (13) arranged around said cavity (11), each bearing an independent induction coil (14). Said induction coils are mounted in the same direction such that their north pole is located one side of the cavity and their south pole on the opposite side. They are arranged so as to generate zones of null magnetic fields alternatively arranged between individual field zones distributed at the periphery of the cavity and forming individual active heating zones wherein the induced current is self-enclosed thereby producing high heating power. The invention is applicable to melting, forging, re-heating, transforming, working metals by induction.

IPC 1-7 (main, further and additional classification)

H05B 6/24

IPC 8 full level (invention and additional information)

C21D 1/42 (2006.01); F27D 11/06 (2006.01); H05B 6/10 (2006.01); H05B 6/24 (2006.01)

CPC (invention and additional information)

H05B 6/24 (2013.01)

Citation (search report)

See references of WO 9853642A1

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB IT LI SE

EPO simple patent family

WO 9853642 A1 19981126; AT 213583 T 20020315; AU 7773298 A 19981211; DE 69803927 D1 20020328; DE 69803927 T2 20021107; DK 0981931 T3 20020610; EP 0981931 A1 20000301; EP 0981931 B1 20020220; ES 2173588 T3 20021016; JP 2001525981 A 20011211; US 6163562 A 20001219

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