专利名称：Process and apparatus for the production of
a porous silica preform
发明人：Fritsche, Hans-Georg,Peper, Udo,Neubauer,
Frank,Schaper, Hartwig, Dr.,Röper, Jürgen,Dr.
申请号：EP99111642.7申请日：19990616公开号：EP0967181A2公开日：19991229
摘要：in a known method for producing an elongated, porous sio2 - early form byremoval of sio2 particles on the zylindermantelfl\äche of a rotating cylindrical bodyabout its longitudinal axis, and the sio2 particles through a variety of abscheidebrennernformed bethe at least one parallel to the longitudinal axis of the beam in thebrennerreihe beabstandet mutually arranged between turning points, in which itsdirection reverses in a repetitive bewegungszyklus along the fine early form to andfro,measures to prevent or reduce overheating of the plastic in the areas around theearly form of inflection. these measures can lead to changes in the abscheiderate.to avoidthis, erfindungsgem\ä\ß suggested that the actions of a local leader of heatfrom the areas around the turning points (7), or a local shield areas (8) around the turningpoints (7) heat cover and within a bewegungszyklus temporally constant g will get text.ina suitable device for carrying out the production of a porous sio2 - early form, with arotatable about its longitudinal axis, cylindrical bodies, with a variety of
abscheidebrennern, in at least one, parallel to the long axis of the beam course
brennerreihe beabstandet nd each arranged and are connected with each other.and bymeans of which sio2 particles on the carrier to form the early form are separated, and averschiebeeinrichtung, by means of the abscheidebrenner along the beam betweenturning points, in which the direction reverses, to and fro, is proposed n, in the sectorsconcerned (8) around the turning points (7) heating (12) are provided.
申请人：Heraeus Quarzglas GmbH & Co. KG
地址：Quarzstrasse 63450 Hanau DE
国籍：DE
代理机构：Staudt, Armin Walter
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