公开(公告)号：EP1337481A1

公开(公告)日：2003-08-27

申请号：EP01992690.6

申请日：2001-10-23

申请人： Schott Glas ,  CARL-ZEISS-STIFTUNGtrading as SCHOTT GLAS

发明人： KARETTA, Frank ,  WITTE, Jörg ,  DUCH, Klaus-Dieter ,  GOHLKE, Dirk ,  MÜNCH, Wolfgang ,  JAKWAY, Allen ,  EICHHOLZ, Rainer ,  LENTES, Frank-Thomas

IPC分类号： C03B5/225 ,  C03B5/167

CPC分类号： C03B5/2252 ,  C03B5/1672

摘要： The invention relates to a method and a device for refining a glass melt, using negative-pressure apparatus. According to the invention, the glass melt is fed to a refining bench by means of an uptake pipe and is discharged from the refining bench by means of a downpipe, a negative pressure being created over the flow of glass in the refining bench. The invention is characterised in that the uptake pipe and/or the downpipe and/or the refining bench has/have at least one component consisting of at least one refractory metal and/or of a refractory metal alloy as the glass contact material.

公开(公告)号：EP1240110A2

公开(公告)日：2002-09-18

申请号：EP01933780.7

申请日：2001-03-30

申请人： Schott Glas ,  CARL-ZEISS-STIFTUNGtrading as Schott Glas

发明人： DUCH, Klaus-Dieter ,  KARETTA, Frank ,  OTT, Franz ,  BREITFELDER, Siegfried

IPC分类号： C03B5/20 ,  C03B5/03 ,  C03B5/027

CPC分类号： C03B5/0275 ,  C03B5/031 ,  C03B5/20

摘要： The device for producing a glass melt from a glass batch has a melting chamber (1), peripheral walls (1.1 - 1.4) and a floor (1.5); a delivery channel (2) which is located under the floor (1.5) of the melting chamber (1), which is conductively connected to the molten bath (3) by an inlet opening (2.3) and which has an outlet opening (2.4) for the finished melt in the area of a peripheral wall (1.1) of the melting chamber (1); and at least one heating device for heating the melting bath (3). The invention is characterised by the following features: the inlet opening (2.3) of the delivery channel (2) is located in a central area of the floor (1.5) of the melting chamber (1); the delivery channel (2) has a cover (2.2) which is located at least approximately at the height of the floor (1.5) of the melting chamber (1), or a cover (4) which covers part of the liquid level (3.1) of the melting bath (3); or is characterised by an additional heating element (5) in the area of the delivery channel (2) or is characterised by a heated vault (20) in the area above the delivery channel (2) and the outlet opening, for forming a blank glass surface (21) where no glass batch is introduced.