EP 0765592 B1 19980422 - LOW-LOSS INDUCTION COIL FOR HEATING AND/OR MELTING METALLIC MATERIALS
Title (en)
LOW-LOSS INDUCTION COIL FOR HEATING AND/OR MELTING METALLIC MATERIALS
Title (de)
VERLUSTARME INDUKTIONSSPULE ZUM ERWÄRMEN UND/ODER SCHMELZEN VON METALLISCHEM GUT
Title (fr)
BOBINE D'INDUCTION A FAIBLES PERTES POUR LE CHAUFFAGE ET/OU LA FUSION DE MATIERES METALLIQUES
Publication
Application
Priority
- DE 9500622 W 19950511
- DE 4420463 A 19940613
Abstract (en)
[origin: WO9535014A1] Described is a low-loss induction coil (2) for heating and/or melting metallic materials, the coil having windings formed by lengths of hollow tubing (3, 4) carrying a fluid coolant. In the central zone of the induction coil (2), the current is carried by hollow conductors (3) made of copper which at the same time form the hollow tubing. Fitted at least in the windings at one end of the coil (2) is a current-carrying element in the form of at least one braid (6) whose individual conductors are insulated from each other, while remaining windings are designed as hollow conductors (3) connected to the current-carrying element. The use of braids (6) as the current carrier leads, at the end of the coil, to a reduction in eddy-current losses caused by transverse magnetic fields, while the use of hollow conductors (3) in the rest of the coil results in the mean distance between the current flux and the metallic material being heated being kept at the minimum and losses due to this distance thus kept low.
IPC 1-7
IPC 8 full level
F27B 14/06 (2006.01); H05B 6/24 (2006.01); H05B 6/42 (2006.01)
CPC (source: EP US)
F27B 14/061 (2013.01 - EP US); H05B 6/24 (2013.01 - EP US); H05B 6/42 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI
DOCDB simple family (publication)
WO 9535014 A1 19951221; AT E165488 T1 19980515; DE 59501998 D1 19980528; EP 0765592 A1 19970402; EP 0765592 B1 19980422; US 5744784 A 19980428
DOCDB simple family (application)
DE 9500622 W 19950511; AT 95917895 T 19950511; DE 59501998 T 19950511; EP 95917895 A 19950511; US 75058997 A 19970227