公开(公告)号：US20170305775A1

公开(公告)日：2017-10-26

申请号：US15496713

申请日：2017-04-25

Applicant: SCHOTT AG

Inventor： Klaus-Dieter Duch ,  Olaf Claussen ,  Thomas Pfeiffer ,  Günter Weidmann ,  Reinhard Wurm

IPC: C03B5/187

CPC classification number: C03B5/187 ,  C03B5/0272 ,  C03B5/163 ,  C03B5/1675 ,  C03B5/24

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.

公开(公告)号：US20240092672A1

公开(公告)日：2024-03-21

申请号：US18471709

申请日：2023-09-21

Applicant: Schott AG

Inventor： Rainer Erwin Eichholz ,  Josef Rasp ,  Alexander Uwe Strobel ,  Werner Axt ,  Patrick Sattler ,  Reinhard Wurm ,  Roland Doss ,  Wolfgang Schmidbauer ,  Volker Ohmstede ,  Kim Oliver Hofmann

IPC: C03B5/03 ,  C03B5/235 ,  C03C1/00 ,  C03C3/091

CPC classification number: C03B5/03 ,  C03B5/235 ,  C03C1/004 ,  C03C3/091

Abstract: A method of making a glass product includes: melting a batch of raw materials to form a glass melt in a melting tank; heating the batch and/or the glass melt using two or more electrodes, the electrodes including an electrode material and heating the batch and/or the glass melt includes operating the electrodes at a current frequency of at least 1,000 Hz and at most 5,000 Hz; withdrawing the glass melt from the melting tank; and forming the glass melt into the glass product.

公开(公告)号：US10358371B2

公开(公告)日：2019-07-23

申请号：US15496713

申请日：2017-04-25

Applicant: SCHOTT AG

Inventor： Klaus-Dieter Duch ,  Olaf Claussen ,  Thomas Pfeiffer ,  Günter Weidmann ,  Reinhard Wurm

IPC: C03B5/187 ,  C03B5/027 ,  C03B5/16 ,  C03B5/167 ,  C03B5/24

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.