Method and device for homogenizing glass melt

US8347652B2 · 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 16, 2010
• Grant date: Jan 8, 2013
• Expiry date: Dec 16, 2030

Classification

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

Abstract

The invention relates to a device for homogenizing a glass melt in a melt receptacle, wherein at least one stirring device is disposed in a melt receptacle, which comprises a stirrer shaft and a plurality of stirrer blades, and wherein a gap (16) is formed between a wall region of the melt receptacle and the stirrer blades. According to the invention, the respective stirring device causes an axial feed action in an inner stirring region between the stirrer shaft and the stirrer blades in order to feed the melt in the stirring region along the stirrer shaft. A melt flow brought about by the axial feed action seals the gap against direct passage of the melt. According to the invention, a very high gap width can be achieved, thus preventing the abrasion of materials in the region of the marginal gap. This also reduces the complexity required for adjusting the device. According to the invention, a high level of homogenization can be achieved regardless of the entry point of the inhomogeneities.