Apparatus and method for producing glass products from a glass melt while avoiding bubble formation

US10358371B2 · kind B2 · utility

Assignee

• Schott AG · DE

Inventors

• Klaus-Dieter Duch · Taunusstein, DE
• Olaf Claussen · Munster, DE
• Thomas Pfeiffer · Kumhausen, DE
• Günter Weidmann · Stuttgart, DE
• Reinhard Wurm · Konnersreuth, DE

Key dates

• Filing date: Apr 25, 2017
• Grant date: Jul 23, 2019
• Expiry date: Jun 21, 2037

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C03B5/24
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

An apparatus and a method for producing glass products from a glass melt, avoiding bubble formation, are disclosed, wherein the apparatus includes a crucible and an internally component for processing the glass melt, and wherein, for heating the glass melt, the apparatus comprises an AC generator which energizes the crucible or stirring crucible via electrical connection elements. The component or stirring system is connected via a current-limiting choke having a variable impedance with the power supply elements. The impedance of the current-limiting choke is adjusted so that a AC density existing in the glass melt lies between a lower limit value and an upper limit value. By means of a choke and by adjusting the impedance it can be achieved that the AC load of the system can be minimized and that simultaneously the water decomposition reaction at the precious metal surfaces can positively be influenced.