Method and device for homogenizing glass melt

US8347653B2 · kind B2 · utility

Assignee

• Schott AG · DE

Inventors

• Christoph Berndhaeuser · Nieder-Olm, DE
• Frank-Thomas Lentes · Bingen, DE
• Karin Naumann · Ober-Olm, DE
• Hans Duerolf · Gau-Bischofsheim, DE
• Holger Hunnius · Mainz, DE

Key dates

• Filing date: Dec 17, 2007
• Grant date: Jan 8, 2013
• Expiry date: Oct 6, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P40/57
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The device for homogenizing a glass melt has a melt receptacle and at least one stirring device arranged in the melt receptacle. Each stirring device consists of a stirrer shaft and stirrer blades extending toward an inside wall of the receptacle, which are configured to produce an axial feed of the glass melt in an inner stirring region between the stirrer shaft and front ends of the stirrer blades. The melt receptacle and the stirring device are configured so that a melt flow caused by the axial feed, which is opposite to the axial feed, seals a gap formed between the inside wall and the front ends of the stirrer blades, so that the glass melt cannot flow directly through the gap to a lower axial end of the inner stirring region. The invention also encompasses a method of homogenizing a glass melt.