Title (en)

CRUCIBLE INDUCTION FURNACE WITH AT LEAST TWO COILS CONNECTED IN PARALLEL TO A RESONANT FREQUENCY CONVERTER

Title (de)

INDUKTIONSTIEGELOFEN MIT MINDESTENS ZWEI PARALLEL AN EINEN SCHWINGKREISUMRICHTER ANGESCHLOSSENEN SPULEN

Title (fr)

FOUR A CREUSET A INDUCTION COMPORTANT AU MOINS DEUX BOBINES RACCORDEES EN PARALLELE A UN CONVERTISSEUR DE FREQUENCE A CIRCUIT OSCILLANT

Publication

EP 0752194 A1 19970108 (DE)

Application

EP 95913850 A 19950318

Priority

• DE 9500376 W 19950318
• DE 4410436 A 19940325

Abstract (en)

[origin: WO9526619A1] Described is a crucible induction furnace with at least two coils (3, 4) connected in parallel to a resonant frequency converter (5). The coils run round the wall of the crucible (2) and are disposed next to each other along the axis of the crucible, a capacitative resistor (6, 7) being connected in series with each coil (3, 4). This design ensures improved distribution, suited to the particular process conditions, of the power provided by the frequency converter (5) to the coils (3, 4).

IPC 1-7

H05B 6/06; H05B 6/24

IPC 8 full level

H05B 6/06 (2006.01); H05B 6/24 (2006.01)

CPC (source: EP US)

H05B 6/067 (2013.01 - EP US); H05B 6/24 (2013.01 - EP US)

Citation (search report)

See references of WO 9526619A1

Designated contracting state (EPC)

AT BE CH DE FR GB IT LI

DOCDB simple family (publication)

WO 9526619 A1 19951005; AT E168517 T1 19980815; DE 59502832 D1 19980820; EP 0752194 A1 19970108; EP 0752194 B1 19980715; US 5940427 A 19990817

DOCDB simple family (application)

DE 9500376 W 19950318; AT 95913850 T 19950318; DE 59502832 T 19950318; EP 95913850 A 19950318; US 70244796 A 19961121