Patent ID: 8845805
Filing Date: 2014-09-30
Classification: C30B,Y10T

Abstract:
1. A device for producing crystalline bodies by directional solidification, which encompasses a melting furnace with a heating chamber, in which are defined at least one supporting surface for a crucible having a lateral wall and floor, and at least one gas purging device arranged over the supporting surface with a gas outlet facing the supporting surface, characterized in that the gas outlet is formed by one or more openings in a lower plunger surface of a plunger-shaped body, which has a geometry adapted to the inner shape of the crucible, permitting at least a partial insertion of the plunger-shaped body into the crucible at a lateral distance to the lateral wall of the crucible, that the gas purging device and/or supporting surface are situated or mounted so that they can be adjusted in an axial direction, thereby enabling a change in the perpendicular distance between the supporting surface and plunger-shaped body, and that the plunger-shaped body has a continuous lateral projection at a distance from the lower plunger surface that makes it possible to completely cover an upper edge of the crucible.