EP 0563802 B1 19950927 - Magnetic yoke for a crucible induction furnace.
Title (en)
Magnetic yoke for a crucible induction furnace.
Title (de)
Magnetischer Rückschluss für einen Indukionstiegelofen.
Title (fr)
Culasse magnétique pour un four à induction à creuset.
Publication
Application
Priority
DE 4210374 A 19920330
Abstract (en)
[origin: EP0563802A2] A magnetic yoke for a crucible induction furnace is proposed, having a rod-shaped laminate (sheet-metal) stack (9, 19), which is suitable for guiding the magnetic flux produced by the furnace coil (3) of the crucible induction furnace (1) and consists of a multiplicity of individual laminates which are electrically insulated from one another. On its main surface facing the furnace coil (3), the laminate stack (9, 19) is shaped such that it is divided into three parts in such a manner that a central region of the laminate stack can be positioned very close to the furnace coil, while the distance between the edges of the individual laminates of the laminate stack and the furnace coil in the two side regions adjacent to the central region of the laminate stack increases towards the edge, so that acute-angled sectors which are free of laminates are formed parallel to the furnace axis in the two edge regions of the yoke pointing towards the furnace coil. This prevents high specific power being introduced at points in the edge regions of the magnetic yoke and makes the temperature distribution within the yoke uniform. <IMAGE>
IPC 1-7
IPC 8 full level
H05B 6/24 (2006.01)
CPC (source: EP US)
H05B 6/24 (2013.01 - EP US)
Designated contracting state (EPC)
BE DE ES FR GB IT
DOCDB simple family (publication)
EP 0563802 A2 19931006; EP 0563802 A3 19931118; EP 0563802 B1 19950927; DE 4210374 A1 19931007; DE 59300652 D1 19951102; ES 2079913 T3 19960116; US 5430758 A 19950704
DOCDB simple family (application)
EP 93104986 A 19930325; DE 4210374 A 19920330; DE 59300652 T 19930325; ES 93104986 T 19930325; US 4012793 A 19930330