Method and device for melting glass using an induction-heated crucible with cooled crust

US7444837B2 · kind B2 · utility

Assignee

• Schott AG · DE

Inventors

• Hildegard Römer · Karben, DE
• Michael Leister · Budenheim, DE
• Uwe Kolberg · Mainz, DE
• Karl Mennemann · Taunusstein, DE
• Guido Räke · Bingen, DE
• Ernest Walter Schäfer · Welgesheim, DE
• Sybill Nüttgens · Frankfurt, DE
• Volker Ohmstede · Mainz, DE

Key dates

• Filing date: Oct 1, 2002
• Grant date: Nov 4, 2008
• Expiry date: Sep 5, 2023

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P40/57
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A method and an apparatus for the rapid melting of glasses in a skull crucible is provided. The method and apparatus introduce high-frequency energy into the contents of the crucible by means of a coil arrangement surrounding the skull crucible, in order to heat the melt, and the batch is laid and the molten glass discharged in the upper region of the crucible, and undissolved constituents of the batch are retained by means of a cooled bridge which is immersed in the melt. The glass is taken off above the coil arrangement and is fed for further processing without flowing through the coil region.