Device for converting materials using induction heating and...

H - Electricity – 05 – B

Patent

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Details

H05B 6/02 (2006.01) B29C 33/06 (2006.01) B29C 35/08 (2006.01) B29C 43/52 (2006.01)

Patent

CA 2718485

The invention relates to a heater (10) for converting a material (44), comprising a lower mould body (12), or die, made of an electrically conducting material and having a moulding zone (14) intended to be brought into contact with the material to be converted; an upper body (20) having no moulding zone, made of an electrically conductive material; inductor means (30) for generating a magnetic field surrounding the die (12) and the upper body (20); the die (12) and the body (20) being electrically insulated from each other during the induction heating phase, so that the opposing faces of these two bodies define a gap (40) in which the magnetic field circulates, said field inducing currents in the surface of the moulding zone (14) of the die (12), thus making it possible to localize the action of the inductors at the moulding zone/material to be converted interface; and deformable compression means (42, 46) placed between the die (12) and the upper body (20), which are capable of exerting uniform pressure on the material to be converted.

L'invention concerne un dispositif (10) de chauffage pour la transformation d'un matériau (44), comprenant; un corps de moule inférieur (12), ou matrice, réalisé en un matériau électriquement conducteur et comportant une zone moulante (14) destinée à être en contact avec le matériau à transformer; un corps supérieur (20) dépourvu de zone moulante, réalisé en un matériau électriquement conducteur; des moyens inducteurs (30) pour générer un champ magnétique enveloppant la matrice (12) et le corps supérieur (20); la matrice (12) et le corps (20) étant électriquement isolés l'un par rapport à l'autre lors de la phase de chauffage par induction, afin que les faces en regard de ces deux corps délimitent un entrefer (40) dans lequel circule le champ magnétique qui induit des courants à la surface de la zone moulante (14) de la matrice (12), permettant ainsi de localiser l'action des inducteurs à l'interface zone moulante/matériau à transformer; des moyens de pression déformables (42, 46), disposés entre la matrice (12) et le corps supérieur (20), aptes à exercer une pression uniforme sur le matériau à transformer.

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