EP 0981931 B1 20020220 - INDUCTION OVEN FOR MELTING METALS
Title (en)
INDUCTION OVEN FOR MELTING METALS
Title (de)
INDUKTIONSOFEN ZUM SCHMELZEN VON METALLEN
Title (fr)
FOUR A INDUCTION POUR LA FUSION DE METAUX
Publication
Application
Priority
- FR 9800971 W 19980515
- FR 9706279 A 19970516
Abstract (en)
[origin: US6163562A] PCT No. PCT/FR98/00971 Sec. 371 Date Nov. 12, 1999 Sec. 102(e) Date Nov. 12, 1999 PCT Filed May 15, 1998 PCT Pub. No. WO98/53642 PCT Pub. Date Nov. 26, 1998An induction heating device which raises the temperature of a metal to be heated for one of melting or hot machining while providing considerably energy saving, increasing yield and observing current safety standards. The device (10) uses a cavity (11) to receive the metal to be heated and at least two magnetic yokes (13) arranged around a periphery of cavity (11), each yoke supporting an independent induction coil (14). The induction coils are mounted and wound in the same direction such that a north pole, of each coil, is located on one side of the cavity and a south pole is located on an opposite side of the cavity. The inductive coils are arranged so as to generate active non null magnetic field zones and inactive zones of null magnetic fields distributed about the periphery of the cavity. An inactive zone of null magnetic fields is located between each adjacent active non null magnetic field zone. The induced current is self-enclosed thereby producing high heating power and the invention is applicable to melting, forging, reheating, transforming, and working metals by induction.
IPC 1-7
IPC 8 full level
C21D 1/42 (2006.01); F27D 11/06 (2006.01); H05B 6/10 (2006.01); H05B 6/24 (2006.01)
CPC (source: EP US)
H05B 6/24 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB IT LI SE
DOCDB simple family (publication)
WO 9853642 A1 19981126; AT E213583 T1 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
DOCDB simple family (application)
FR 9800971 W 19980515; AT 98925719 T 19980515; AU 7773298 A 19980515; DE 69803927 T 19980515; DK 98925719 T 19980515; EP 98925719 A 19980515; ES 98925719 T 19980515; JP 55003498 A 19980515; US 42373299 A 19991112