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1. 发明专利

JP2013151393A Optical fiber drawing furnace and drawing method 审中-公开
标题翻译：光纤绘图炉和绘图方法
公开(公告)号：JP2013151393A
公开(公告)日：2013-08-08
申请号：JP2012013613
申请日：2012-01-26
申请人： Sumitomo Electric Ind Ltd , 住友電気工業株式会社
发明人： OKAZAKI IWAO , ENOMOTO TADASHI , YAMAZAKI TAKU , HAYAKAWA MASATOSHI , SHIOZAKI MANABU , KAMINOYAMA NORIHIRO , UCHINO FUMITAKA
IPC分类号： C03B37/029
CPC分类号： C03B37/029 , C03B2205/80
摘要： PROBLEM TO BE SOLVED: To provide an optical fiber drawing furnace and a drawing method that are configured such that the temperature difference near the shoulder part of a glass preform is increased to suppress variations in in-furnace temperature and in-furnace pressure, thereby reducing changes in outer diameter of an optical fiber.SOLUTION: A drawing furnace is configured to include: a heating furnace that heats an optical fiber glass preform 11 connected to a dummy rod 13; and an upper chamber 20 that is provided at the upper part of the heating furnace and in which a part of the dummy rod and the optical fiber glass preform 11 including the connected part 14 with the dummy rod are stored. In the optical fiber drawing using the drawing furnace, an optical fiber is drawn by using quartz glass, which transmits radiation light from the heating furnace and the optical fiber glass preform, for the upper chamber 20. In addition, energy-saving can be achieved by reflecting the radiation light to the side of the glass preform 11 while covering the outside of the upper chamber 20 with a reflector that reflects the radiation light.
摘要翻译：要解决的问题：提供一种配置为使得玻璃预制件的肩部附近的温差增加以抑制炉内温度和炉内压力的变化的光纤拉丝炉和拉拔方法，从而减少光纤的外径变化。解决方案：拉丝炉构造为包括：加热炉，其加热连接到虚拟棒13的光纤玻璃预制棒11; 以及设置在加热炉的上部并且其中包含具有虚拟棒的连接部14的虚拟棒和光纤玻璃预制棒11的一部分的上室20被存储。在使用拉丝炉的光纤拉伸中，通过使用石英玻璃来吸收光纤，该石英玻璃将来自加热炉和光纤玻璃预制棒的辐射光用于上部室20.另外，可以实现节能通过将辐射光反射到玻璃预制件11的侧面，同时用反射辐射光的反射器覆盖上室20的外部。

2. 发明专利

JP2013067533A Optical fiber drawing furnace 审中-公开
标题翻译：光纤绘图炉
公开(公告)号：JP2013067533A
公开(公告)日：2013-04-18
申请号：JP2011207334
申请日：2011-09-22
申请人： Sumitomo Electric Ind Ltd , 住友電気工業株式会社
发明人： HAYAKAWA MASATOSHI , ENOMOTO TADASHI , YAMAZAKI TAKU , OKAZAKI IWAO
IPC分类号： C03B37/029
CPC分类号： C03B37/029
摘要： PROBLEM TO BE SOLVED: To provide an optical fiber drawing furnace capable of effectively suppressing waste of energy.SOLUTION: The optical fiber drawing furnace 10 includes: a heating furnace 13 that heats a glass preform for optical fiber 11 connected to a dummy rod 12; and an upper chamber 16 that is established at an upper part of the heating furnace 13 and houses the glass preform for optical fiber 11. Inner surfaces of lateral and upper sides of the upper chamber 16 are covered with reflectors 17a and 17b that reflect light.
摘要翻译：要解决的问题：提供能够有效地抑制能量浪费的光纤拉丝炉。解决方案：光纤拉丝炉10包括：加热炉13，其加热连接到虚拟棒12的光纤11的玻璃预制棒; 以及建立在加热炉13的上部并容纳光纤11的玻璃预制件的上部室16.上部室16的侧面和上侧的内表面被反射光17a的反射器17a和17b覆盖。版权所有（C）2013，JPO＆INPIT

3. 发明专利

JP2012236742A Heat resistant spring, and sealing structure for optical fiber drawing furnace using the same 有权
标题翻译：使用它的光纤绘图炉的耐热弹簧和密封结构
公开(公告)号：JP2012236742A
公开(公告)日：2012-12-06
申请号：JP2011106784
申请日：2011-05-12
申请人： Sumitomo Electric Ind Ltd , 住友電気工業株式会社
发明人： YAMAZAKI TAKU , ENOMOTO TADASHI , OKAZAKI IWAO , HAYAKAWA MASATOSHI
IPC分类号： C03B37/029 , F16F1/02 , F16F1/26 , F16J15/06
CPC分类号： C03B37/029 , C03B2205/80
摘要： PROBLEM TO BE SOLVED: To provide a heat resistant spring capable of sealing by a simple structure, a gap generated between an upper end opening portion of an optical fiber drawing furnace and an optical fiber preform, even in the case of an optical fiber preform having a large diameter fluctuation.SOLUTION: This heat resistant spring 26 is used for sealing the gap generated between the upper end opening portion of the optical fiber drawing furnace and the optical fiber preform inserted therefrom. The heat resistant spring 26 in which slits 26a, 26b are formed on a cylindrical heat resistant material alternately from the upward and downward directions, is provided so that a sealing member provided so as to abut on the side face of the optical fiber preform is pressed in the radial direction onto the side face of the optical fiber preform by shrinkage force in the cylindrical radial direction of the heat resistant spring 26.
摘要翻译：要解决的问题：为了提供能够通过简单结构进行密封的耐热弹簧，即使在光纤的情况下，在光纤拉丝炉的上端开口部分和光纤预制棒之间产生间隙具有大直径波动的纤维预制件。解决方案：该耐热弹簧26用于密封在光纤拉丝炉的上端开口部分和从其插入的光纤预制棒之间产生的间隙。设置有从上下方向交替地形成在圆筒状耐热材料上的狭缝26a，26b的耐热弹簧26，使得设置成与光纤预制件的侧面抵接的密封构件被按压在径向方向上通过耐热弹簧26的圆柱形径向方向上的收缩力在光纤预制件的侧面上。（C）2013，JPO和INPIT

4. 发明专利

JP2013018691A Sealing structure for optical fiber base material heating furnace 有权
标题翻译：光纤基础材料加热炉密封结构
公开(公告)号：JP2013018691A
公开(公告)日：2013-01-31
申请号：JP2011155431
申请日：2011-07-14
申请人： Sumitomo Electric Ind Ltd , 住友電気工業株式会社
发明人： OKAZAKI IWAO , ENOMOTO TADASHI , YAMAZAKI TAKU , HAYAKAWA MASATOSHI
IPC分类号： C03B37/029
CPC分类号： C03B37/029 , C03B2205/80
摘要： PROBLEM TO BE SOLVED: To provide a sealing structure which is capable of sealing, in a simplified structure, a gap occurring between the upper end opening portion of an optical fiber base material heating furnace and an optical fiber base material, and which is also applicable to the heating of an optical fiber base material that may greatly vary in diameter.SOLUTION: The sealing structure 20 includes a plurality of blade members 24, 25 and a support mechanism for supporting those. The support mechanism has a tilting table 21 which tilts down toward the central axis direction of the upper end opening portion and has an insertion hole for inserting an optical fiber base material in the center, and a slide mechanism which brings the tips of the plurality of blade members 24, 25 into contact with the side of the optical fiber base material by individually sliding the plurality of blade members 24, 25 under their own weight in the radial direction of an optical fiber drawing furnace along the tilt of the tilting table 21.
摘要翻译：解决的问题：为了提供一种密封结构，其能够以简化的结构密封在光纤基材加热炉的上端开口部与光纤基材之间产生的间隙，也适用于可能大大变化的光纤基材的加热。解决方案：密封结构20包括多个叶片构件24,25和用于支撑它们的支撑机构。支撑机构具有倾斜台21，该倾斜台21朝向上端开口部的中心轴方向倾斜，并且具有用于将光纤基材插入中心的插入孔，以及将多个叶片构件24,25通过沿着倾斜台21的倾斜沿着光纤拉丝炉的径向独立地自由地滑动多个叶片构件24,25而与光纤基材的侧面接触。版权所有（C）2013，JPO＆INPIT

5. 发明专利

JP2015059055A ガラス微粒子堆積体の製造方法审中-公开
标题翻译：玻璃微粒沉积体的制造方法
公开(公告)号：JP2015059055A
公开(公告)日：2015-03-30
申请号：JP2013192681
申请日：2013-09-18
申请人：住友電気工業株式会社 , Sumitomo Electric Ind Ltd
发明人： HAYAKAWA MASATOSHI
IPC分类号： C03B8/04
CPC分类号： Y02P40/57
摘要：【課題】原料収率を維持しながら、ガラス微粒子堆積体の割れ等の不良発生頻度を低減することが可能なガラス微粒子堆積体の製造方法を提供する。【解決手段】反応容器11内に出発ロッド13とガラス微粒子生成用のバーナー18を設置し、吸気口21Aからクリーンエアを供給し、バーナー18に原料ガス及び火炎形成ガスを供給し、バーナー18で合成されたガラス微粒子20を出発ロッド13に堆積させてガラス微粒子堆積体14を作製し、排気口21Bから余剰ガラス微粒子および反応容器内ガスを排気する。ガラス微粒子堆積体14を製造する際の反応容器11内のガラス微粒子の粒子濃度C(t)は1.0[g/l]以下である。【選択図】図1
摘要翻译：要解决的问题：提供一种玻璃微粒堆积体的制造方法，其能够在保持原料产率的同时降低玻璃微粒堆积体的裂纹等发生故障的频率。解决方案：起始杆部13和用于制造玻璃微粒的燃烧器18安装在反应容器11中。从入口21A和原料气体供给清洁空气，向燃烧器18供给火焰形成气体。在燃烧器18中合成的玻璃微粒20 沉积在起始杆13中，以产生玻璃微粒沉积体14，反应容器内的过量的玻璃微粒和气体从出气口21B排出。当制造玻璃微粒堆积体14时，反应容器11内的玻璃微粒的粒子密度C（t）为1.0（g / l）以下。

6. 发明专利

JP2013203622A Drawing furnace and drawing method for optical fiber 审中-公开
标题翻译：用于光纤的绘图和绘图方法
公开(公告)号：JP2013203622A
公开(公告)日：2013-10-07
申请号：JP2012076033
申请日：2012-03-29
申请人： Sumitomo Electric Ind Ltd , 住友電気工業株式会社
发明人： HAYAKAWA MASATOSHI , YAMAZAKI TAKU , OKAZAKI IWAO , SHIOZAKI MANABU , KAMINOYAMA NORIHIRO
IPC分类号： C03B37/029
CPC分类号： C03B37/029 , C03B2205/56 , C03B2205/90 , C03B2205/92
摘要： PROBLEM TO BE SOLVED: To provide a drawing apparatus and a drawing method for an optical fiber, effective for suppressing crossing of a downflow gas stream and upper-flow gas stream at a lower end of a constricted part of a furnace core tube and preventing deposition of soot in an inner diameter direction.SOLUTION: There is provided a drawing apparatus for optical fibers provided with a furnace core tube 13 for inserting a glass preform 11 for optical fiber, a lower extension tube 17 provided under the furnace core tube and having a shutter mechanism 19 at a lower end, and a furnace case 14 housing a heater 15 to heat the glass preform for optical fiber from outside. Optical fiber is drawn by passing an inert gas through the furnace core tube downward from the top. The lower extension tube 17 has an inner diameter larger than the furnace core tube, and a gas stream reversing member 20 composed of a tubular body 20b having a diameter nearly equal to the diameter of the furnace core tube and protruding downward from the lower part of the furnace core tube is placed between the furnace core tube 13 and the lower extension tube 17 to again reverse the gas stream from the lower part.
摘要翻译：要解决的问题：提供一种用于光纤的拉伸装置和拉丝方法，其有效地抑制了在炉芯管的收缩部分的下端处的下流气流和上流气流的交叉，并防止沉积烟炱的内径方向。解决方案：提供了一种用于光纤的拉制装置，其具有用于插入用于光纤的玻璃预制棒11的炉芯管13，设置在炉芯管下方的下延伸管17，下端的闸门机构19和容纳加热器15的炉壳14，以从外部加热用于光纤的玻璃预制件。通过将惰性气体从顶部向下通过炉芯管来拉伸光纤。下延伸管17具有比炉芯管大的内径，以及由管状体20b构成的气流反转构件20，管状体20b的直径几乎等于炉芯管的直径，并从下部向下突出炉芯管放置在炉芯管13和下延伸管17之间，以再次从下部逆转气流。

7. 发明专利

JP2013203621A Drawing furnace and drawing method for optical fiber 审中-公开
标题翻译：用于光纤的绘图和绘图方法
公开(公告)号：JP2013203621A
公开(公告)日：2013-10-07
申请号：JP2012076031
申请日：2012-03-29
申请人： Sumitomo Electric Ind Ltd , 住友電気工業株式会社
发明人： HAYAKAWA MASATOSHI , YAMAZAKI TAKU , OKAZAKI IWAO , SHIOZAKI MANABU , KAMINOYAMA NORIHIRO
IPC分类号： C03B37/029
CPC分类号： C03B37/029 , C03B2205/56 , C03B2205/82 , C03B2205/90 , C03B2205/92
摘要： PROBLEM TO BE SOLVED: To provide a drawing apparatus and a production method for optical fibers to suppress entrainment of the outer atmosphere by keeping the pressure in a furnace core tube to be positive pressure higher than a predetermined level, and prevent contact and adhesion of soot peeled off from the furnace core tube to the optical fiber.SOLUTION: There is provided an optical fiber drawing furnace provided with a furnace core tube 13 for inserting a glass preform 11 and a furnace case 14 housing a heater 15 for heating the furnace core tube from outside. An inert gas is passed through the furnace core tube downward from the top, the drawn glass fiber 12 is delivered outside through a fiber delivery port underlying the furnace core tube 13, and the inert gas is released outside at the same time. A cylindrical shutter pipe 19 having an outer diameter that is smaller than the inner diameter of the furnace core tube, an inner diameter of 5-15 mm and a length of 30-500 mm, is placed under the furnace core tube 13, and the upper part of the shutter tube is protruded upward by a prescribed length from the upper face of a supporting part supporting the shutter tube.
摘要翻译：要解决的问题：为了提供一种用于通过将炉芯管中的压力保持在高于预定水平的正压力来抑制外部气氛夹带的拉伸装置和制造方法，并且防止烟灰的接触和粘附从炉芯管剥离到光纤。解决方案：提供一种光纤拉丝炉，其具有用于插入玻璃预制棒11的炉芯管13和容纳用于加热炉芯管的加热器15的炉壳14 从外面。惰性气体从顶部向下通过炉芯管，拉制的玻璃纤维12通过炉芯管13下方的纤维输送口输送到外部，惰性气体同时被释放到外部。具有比炉芯管的内径小的外径，5-15mm的内径和30-500mm的长度的圆柱形闸门管19放置在炉芯管13的下方，并且快门管的上部从支撑快门管的支撑部分的上表面向上突出规定的长度。

8. 发明专利

JP2013151394A Heating furnace and heating method for glass preform, and optical fiber drawing method 有权
标题翻译：用于玻璃预热的加热炉和加热方法，以及光纤绘图方法
公开(公告)号：JP2013151394A
公开(公告)日：2013-08-08
申请号：JP2012013614
申请日：2012-01-26
申请人： Sumitomo Electric Ind Ltd , 住友電気工業株式会社
发明人： OKAZAKI IWAO , ENOMOTO TADASHI , YAMAZAKI TAKU , HAYAKAWA MASATOSHI , SHIOZAKI MANABU , KAMINOYAMA NORIHIRO
IPC分类号： C03B37/014 , C03B37/029 , G02B6/00
CPC分类号： C03B37/0146 , C03B37/029 , C03B2205/80
摘要： PROBLEM TO BE SOLVED: To provide a heating furnace and heating method for glass preforms that are configured to suppress energy dissipation from a quartz-glass chamber provided at the upper part of a furnace core tube or quartz-glass chambers each provided at the upper part and the lower part of the furnace core tube, thereby achieving excellent heating efficiency, and an optical fiber drawing method.SOLUTION: A glass preform 11 is heated such that the glass preform 11 connected to a dummy rod 12 is stored in a furnace core tube 14 and the glass preform is heated by heating devices 15a, 15b, and 15c from the outside. At least the upper side of a region, other than the region directly heated by the heating devices 15a, 15b, and 15c, in the furnace core tube 14 is formed by a chamber 18 made of quartz glass that transmits radiation light radiated from the heated region. The outside of the chamber 18 is heated by covering it with a reflector 30 that reflects the radiation light. The reflector 30 is a metal reflector, and furthermore, can be formed of aluminum foil. In addition, it is preferable to provide a gap 31, in which gas is interposed, between the chamber 18 and the reflector 30.
摘要翻译：要解决的问题：提供一种用于玻璃预制件的加热炉和加热方法，其被配置为抑制设置在炉芯管的上部的石英玻璃室或者在上部设置的石英玻璃室的能量耗散和炉芯管的下部，从而实现优异的加热效率和光纤拉伸方法。玻璃预成型体11被加热，使得连接到虚拟棒12的玻璃预制棒11被储存在炉芯管中 14，并且玻璃预制件由加热装置15a，15b和15c从外部加热。至少在由炉芯管14中由加热装置15a，15b和15c直接加热的区域以外的区域的上侧由由石英玻璃制成的室18形成，所述室18透射从被加热的地区。通过用反射辐射光的反射器30覆盖室18的外部来加热。反射器30是金属反射器，此外，可以由铝箔形成。此外，优选在室18和反射体30之间设置插入气体的间隙31。

9. 发明专利

JP2013035742A Apparatus and method for drawing optical fiber 审中-公开
标题翻译：用于绘制光纤的装置和方法
公开(公告)号：JP2013035742A
公开(公告)日：2013-02-21
申请号：JP2012126920
申请日：2012-06-04
申请人： Sumitomo Electric Ind Ltd , 住友電気工業株式会社
发明人： OKAZAKI IWAO , KAMINOYAMA NORIHIRO , SHIOZAKI MANABU , ENOMOTO TADASHI , YAMAZAKI TAKU , HAYAKAWA MASATOSHI , KOSHO MASARU
IPC分类号： C03B37/027 , C03B37/029
CPC分类号： C03B37/02727 , C03B37/029 , C03B2205/82 , C03B2205/92
摘要： PROBLEM TO BE SOLVED: To provide an apparatus and method for drawing an optical fiber, which maintains the pressure in a furnace tube at a predetermined or higher value to the drawing velocity of an optical fiber to thereby suppress the involvement of outside air.SOLUTION: A shutter tube section 19 is installed under a fiber lead-out port. If the outer diameter of a glass fiber 12 is taken as 2r; the inner diameter of the shutter tube 19, as 2r; the drawing velocity of the glass fiber 12, as V; and the flow volume of an inert gas flowing down a furnace tube 13, as Q, expression [1] is satisfied. It is preferable that the inner diameter of the shutter tube is 5 mm to 15 mm, and the length thereof is ≥30 mm and ≤500 mm.
摘要翻译：要解决的问题：提供一种拉制光纤的装置和方法，其将炉管中的压力保持在预定或更高的值，使其与光纤的拉伸速度保持一致，从而抑制外部空气的参与。解决方案：光纤管部19安装在光纤引出口下方。如果玻璃纤维12的外径为2r 1 ; 快门管19的内径为2r 2 ; 玻璃纤维12的拉伸速度为V 1 ; 并且满足作为Q表达式[1]的从炉管13流下的惰性气体的流量。快门管的内径优选为5mm〜15mm，长度为≥30mm，≤500mm。版权所有（C）2013，JPO＆INPIT

10. 发明专利

JP2012218956A Optical fiber drawing furnace, and method for drawing the same 有权
标题翻译：光纤绘图炉及其绘制方法
公开(公告)号：JP2012218956A
公开(公告)日：2012-11-12
申请号：JP2011084158
申请日：2011-04-06
申请人： Sumitomo Electric Ind Ltd , 住友電気工業株式会社
发明人： YAMAZAKI TAKU , ENOMOTO TADASHI , OKAZAKI IWAO , HAYAKAWA MASATOSHI
IPC分类号： C03B37/029 , C03B37/027
CPC分类号： C03B37/0253 , C03B37/02727 , C03B2205/46 , C03B2205/56 , C03B2205/74
摘要： PROBLEM TO BE SOLVED: To achieve stable drawing from a center part by suppressing partial decrease of an optical fiber preform, by facilitating position adjustment of the optical fiber preform in a furnace core tube.SOLUTION: A drawing furnace 10 includes a heating furnace 1 having a furnace core tube 2 for heating and melting an optical fiber preform 20, and a lower extension tube 5 for protecting from the outside air, an optical fiber obtained by drawing the optical fiber preform 20 under the heating furnace 1. At least a part of the lower extension tube 5 is moved downward with respect to the heating furnace 1. In the state where the lower extension tube 5 is moved downward, position adjustment of the optical fiber preform 20 can be performed, while observing the inside of the furnace core tube 2, by utilizing a space between the lower extension tube 5 and the heating furnace 1.
摘要翻译：要解决的问题：通过抑制光纤预制棒在炉芯管中的位置调整，通过抑制光纤预制棒的部分减少，从中心部分获得稳定的拉伸。解决方案：拉丝炉10包括具有用于加热和熔化光纤预制棒20的炉芯管2和用于保护外界空气的下延伸管5的加热炉1，光纤预制棒20在加热炉1下方。下延伸管5的至少一部分相对于加热炉1向下移动。在下延伸管5向下移动的状态下，光纤的位置调整通过利用下延伸管5和加热炉1之间的空间，可以在观察炉芯管2的内部的同时执行预制件20。（C）2013，JPO＆INPIT

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