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    • 3. 发明专利
    • Method and apparatus for producing porous quartz glass preform
    • 用于生产多孔石英玻璃预制件的方法和装置
    • JP2006219309A
    • 2006-08-24
    • JP2005031557
    • 2005-02-08
    • Asahi Glass Co Ltd旭硝子株式会社
    • IWATA KATSURAUTO TAKAOSAKUMA TAKUYA
    • C03B8/04C03B37/018
    • C03B19/1446C03B37/0144Y02P40/57
    • PROBLEM TO BE SOLVED: To prevent silica fine particles from adhering onto an exhaust pipe for exhausting unwanted hydrogen chloride gas generating in production of porous quartz glass preforms. SOLUTION: When the porous quartz glass preform is formed by depositing and piling up silica fine particles generated by hydrolysis of a silicon compound in oxyhydrogen flame in a reaction furnace 1 onto a starting member 12, a heating means 4 is provided for heating the exhaust pipe 3 for exhausting hydrogen chloride gas generated in the reaction furnace 1 to outside. This heating means 4 heats the exhaust pipe 3 so that the temperature in the exhaust pipe 3 falls within a predetermined range from a temperature roughly same as that of hydrogen chloride gas flowing in the exhaust pipe 3 to a specified temperature higher than the temperature. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:为了防止二氧化硅细颗粒粘附到排气管上,以排出生产多孔石英玻璃预制件时产生的不希望的氯化氢气体。 解决方案:当通过将反应炉1中的氢氧化物中的硅化合物的硅化合物水解淀积并堆积在起始构件12上而形成多孔石英玻璃预制件时,提供加热装置4用于加热 用于将在反应炉1中产生的氯化氢气体排出到外部的排气管3。 该加热装置4加热排气管3,使得排气管3中的温度从与排气管3中流动的氯化氢气体的温度大致相同的温度落在比该温度高的规定温度的预定范围内。 版权所有(C)2006,JPO&NCIPI
    • 4. 发明专利
    • Method and apparatus for manufacturing porous quartz glass preform
    • 用于制造多孔QUARTZ玻璃预制件的方法和装置
    • JP2006232638A
    • 2006-09-07
    • JP2005051592
    • 2005-02-25
    • Asahi Glass Co Ltd旭硝子株式会社
    • IWATA KATSURAUTO TAKAOSAKUMA TAKUYA
    • C03B8/04C03B37/018
    • C03B37/01406C03B37/0144Y02P40/57
    • PROBLEM TO BE SOLVED: To provide a method and an apparatus for manufacturing a porous quartz glass preform by which the damage or the collapse of the porous quartz glass preform caused by the falling of silica fine particle under operation is prevented to improve productivity and the corrosion of an opening part is also prevented. SOLUTION: In the method and the apparatus for manufacturing the porous quartz glass preform, an exhaust pipe 3 for discharging unwanted hydrogen chloride gas in a reaction furnace 1 to the outside is attached to the upper side of a position 13 synthesizing the silica fine particle in the reaction furnace 1 and an exhaust amount control means for controlling the exhaust amount of the hydrogen chloride gas from the exhaust pipe 3 to make always the pressure difference between the inside and the outside of the reaction furnace 1 to be nearly zero is provided. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:提供一种用于制造多孔石英玻璃预成型件的方法和设备,通过该方法和设备,防止由于二氧化硅微粒在操作中的下降而导致的多孔石英玻璃预制件的损坏或塌陷,从而提高生产率 也防止了开口部的腐蚀。 解决方案:在用于制造多孔石英玻璃预制件的方法和装置中,将用于将反应炉1中的不需要的氯化氢气体排放到外部的排气管3附接到合成二氧化硅的位置13的上侧 反应炉1中的细颗粒和用于控制来自排气管3的氯化氢气体的排出量总是使反应炉1的内部和外部之间的压力差几乎为零的排气量控制装置是 提供。 版权所有(C)2006,JPO&NCIPI