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    • 7. 发明专利
    • Burner for glass fine particle deposition and method for producing glass fine particle deposited body
    • 玻璃微粒沉积燃烧器及生产玻璃微粒沉积体的方法
    • JP2013241288A
    • 2013-12-05
    • JP2012114042
    • 2012-05-18
    • Furukawa Electric Co Ltd:The古河電気工業株式会社
    • ARAI SHINICHIARIMA KIYOSHIASAO MASASHI
    • C03B37/018C03B8/04
    • C03B37/0142C03B2207/06C03B2207/08C03B2207/12C03B2207/14C03B2207/20C03B2207/22C03B2207/36C03B2207/40
    • PROBLEM TO BE SOLVED: To provide a burner for glass fine particle deposition capable of suppressing deposition of glass fine particles on the burner, and suppressing crack of a glass fine particle deposited body and the burner breakage, and to provide a method for producing a glass fine particle deposited body.SOLUTION: A burner 1 for deposition to be used has: a first outflow part group 3 including the center part of the burner 1; a reducing gas outflow part 5 which is positioned on the outside of the first outflow part group 3, and whose outflow port 13 is positioned furthermore ahead in the gas outflow direction than the outflow port 11-4 of an outflow part 3-4 on the outermost layer of the first outflow part group 3; and a second outflow part group 7 which is positioned on the outside of the reducing gas outflow part 5, and whose outflow port is positioned furthermore ahead in the gas outflow direction than the outflow port of the first outflow part group 3 and the outflow port 13 of the reducing gas outflow part 5. While sending reducing gas reacting with oxygen by acting in the reduction direction with respect to quartz glass into the reducing gas outflow part 5, raw material gas, combustible gas, combustion supporting gas and seal gas are blown out from the first outflow part group 3, to thereby deposit glass fine particles on a target.
    • 要解决的问题:提供一种用于玻璃微粒沉积的燃烧器,其能够抑制玻璃微粒在燃烧器上的沉积,并且抑制玻璃微粒堆积体的裂纹和燃烧器断裂,并提供一种玻璃制造方法 细颗粒沉积体。解决方案:用于沉积的燃烧器1具有包括燃烧器1的中心部分的第一流出部分组3; 位于第一流出部组3的外侧的还原气体流出部5,其流出口13比气体流出方向上的流出部3-4的流出口11-4位于气体流出方向的前方 第一流出部分组3的最外层; 以及位于还原气体流出部5的外侧的第二流出部组7,其流出口比第一流出部组3和流出口13的流出口在气体流出方向前方更位于前方 还原气体,可燃性气体,燃烧性支持气体,密封气体吹出的同时,使与氧反应的还原气体相对于石英玻璃朝向还原气体流出部5向减少方向 从第一流出部组3,将玻璃微粒沉积在靶上。
    • 9. 发明专利
    • Method and apparatus of producing optical fiber preform
    • 生产光纤预制件的方法和装置
    • JP2012232875A
    • 2012-11-29
    • JP2011103132
    • 2011-05-02
    • Fujikura Ltd株式会社フジクラ
    • YAMADA SHIGETOSHIHIRAFUNE SHUNICHIRO
    • C03B8/04C03B37/018
    • C03B37/01413C03B37/0142C03B2207/06C03B2207/12C03B2207/20C03B2207/22C03B2207/36C03B2207/52C03B2207/54C03B2207/60C03B2207/80C03B2207/81C03B2207/85
    • PROBLEM TO BE SOLVED: To suppress degradation of a distal end part of a nozzle by red heat without lowering depositing efficiency and in particular to suppress degradation in the case of frequently repeating transitions between depositing modes and non-depositing mode.SOLUTION: A method of producing optical fiber preforms has a glass raw material discharging nozzle 31, a seal gas discharge nozzle 32 arranged outside of the glass raw material discharging nozzle, a burning gas port 33 arranged outside of the seal gas discharging nozzle, a plurality of small diameter auxiliary burning gas discharging nozzle 34 are inwardly arranged in the burning gas port, and the auxiliary burning gas discharge nozzles are arranged so as to be separated from the seal gas discharging nozzle, and has a step α for switching burning gas in the burning gas port to in purge gas in the condition for maintaining the flow rate of auxiliary burning gas to the flow rate or higher by which the distal end of the nozzle does not glow in the burning gas port while maintaining a pilot burner by flowing the burning gas to the seal gas discharging nozzle in stead of seal gas in the case of transiting from the depositing mode to the non-depositing mode.
    • 要解决的问题:通过红色热量抑制喷嘴的远端部分的劣化,而不降低沉积效率,特别是在沉积模式和非沉积模式之间频繁重复转变的情况下抑制劣化。 解决方案:制造光纤预制件的方法具有玻璃原料排出喷嘴31,布置在玻璃原料排出喷嘴外侧的密封气体排出喷嘴32,设置在密封气体排出喷嘴外侧的燃烧气体口33 多个小直径辅助燃烧气体排出喷嘴34向内设置在燃烧气体口中,并且辅助燃烧气体排出喷嘴被布置成与密封气体排出喷嘴分离,并且具有用于切换燃烧的步骤α 在将燃烧气体的流量维持在燃烧气体口中不发生燃烧气体端口的同时保持引燃燃烧器的流量或更高的流量或更高的条件下,将燃烧气体口中的气体输送到吹扫气体中, 在从沉积模式转移到非沉积模式的情况下,将燃烧气体流到密封气体排出喷嘴而不是密封气体。 版权所有(C)2013,JPO&INPIT
    • 10. 发明专利
    • Burner for synthesizing glass particulate, and method for producing glass particulate deposit
    • 用于合成玻璃颗粒的燃烧器,以及用于生产玻璃颗粒沉积物的方法
    • JP2012001411A
    • 2012-01-05
    • JP2010140309
    • 2010-06-21
    • Furukawa Electric Co Ltd:The古河電気工業株式会社
    • ARAI SHINICHIARIMA KIYOSHIASAO MASASHI
    • C03B8/04C03B37/018
    • C03B37/0142C03B2207/06C03B2207/12C03B2207/20C03B2207/26
    • PROBLEM TO BE SOLVED: To provide a burner for synthesizing glass particulates formable efficiently in a short time, a high-quality soot body in production of an optical fiber preform, and reducing production cost.SOLUTION: In this burner 10 for synthesizing glass particulates, combustible gas and combustion supporting gas are blown out, and raw material gas is supplied into a flame comprising the combustible gas and the combustion supporting gas, and glass particulates synthesized thereby are deposited on a target rod. In the burner 10, a plurality of raw material gas blowout passages 11 are arranged at equal intervals on a concentric circumference centered at the sectional center of the burner 10 for synthesizing glass particulates. Further, a combustion supporting gas blowout passage 12 is constituted of a first combustion supporting gas blowout passage 121 arranged circularly on a circle concentric with each raw material gas blowout passage 11 so as to encircle each of the raw material gas blowout passages 11, and a second combustion supporting gas blowout passage 122 arranged circularly on a concentric circumference centered at the sectional center of the burner 10 for synthesizing glass particulates so as to encircle the first combustion supporting gas blowout passage 121.
    • 要解决的问题:为了提供用于合成在短时间内有效形成的玻璃微粒的燃烧器,在生产光纤预制棒时提供高质量的烟灰体,并降低生产成本。 解决方案:在用于合成玻璃微粒的燃烧器10中,吹出可燃气体和燃烧辅助气体,并将原料气体供给到包含可燃气体和燃烧负载气体的火焰中,并且沉积由其合成的玻璃微粒 在目标杆上。 在燃烧器10中,多个原料气体吹出通道11以等间隔布置在以燃烧器10的中心为中心的同心圆周上,用于合成玻璃微粒。 此外,燃烧支撑气体吹出通道12由围绕每个原料气体吹出通道11的与每个原料气体吹出通道11同心圆形地设置的第一燃烧支持气体吹出通道121和 第二燃烧支持气体吹出通道122圆周地布置在以燃烧器10的中心为中心的同心圆周上,用于合成玻璃微粒以包围第一燃烧支持气体吹出通道121.版权所有(C)2012,JPO&INPIT