JP2003128422A - Conduit structure for molten glass and reduced pressure deaerator for molten glass - Google Patents
Conduit structure for molten glass and reduced pressure deaerator for molten glassInfo
- Publication number
- JP2003128422A JP2003128422A JP2001320286A JP2001320286A JP2003128422A JP 2003128422 A JP2003128422 A JP 2003128422A JP 2001320286 A JP2001320286 A JP 2001320286A JP 2001320286 A JP2001320286 A JP 2001320286A JP 2003128422 A JP2003128422 A JP 2003128422A
- Authority
- JP
- Japan
- Prior art keywords
- molten glass
- refractory
- joint portion
- refractory bricks
- vacuum degassing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/225—Refining
- C03B5/2252—Refining under reduced pressure, e.g. with vacuum refiners
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/42—Details of construction of furnace walls, e.g. to prevent corrosion; Use of materials for furnace walls
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/42—Details of construction of furnace walls, e.g. to prevent corrosion; Use of materials for furnace walls
- C03B5/44—Cooling arrangements for furnace walls
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、溶融ガラスの導管
構造及び溶融ガラスの減圧脱泡装置に係り、特に高温の
溶融ガラス内の気泡を除去するための減圧脱泡装置に適
用される溶融ガラスの導管構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molten glass conduit structure and a molten glass vacuum degassing apparatus, and more particularly to a molten glass applied to a vacuum degassing apparatus for removing bubbles in hot glass. Concerning the conduit structure of.
【０００２】[0002]
【従来の技術】溶融ガラスの減圧脱泡装置は、溶解槽で
溶融されたガラスを脱泡処理して次の成形工程に連続的
に供給するシステムに用いられる装置であり、特開平３
−３３０２０号公報には、サイフォン式と称される減圧
脱泡槽が適用された減圧脱泡装置の一例が開示されてい
る。A vacuum degassing apparatus for molten glass is an apparatus used in a system for degassing molten glass in a melting tank and continuously supplying it to the next molding step.
JP-A-33020 discloses an example of a vacuum degassing apparatus to which a vacuum degassing tank called a siphon type is applied.
【０００３】前記減圧脱泡装置は、主として溶解槽、上
昇管（導管）、減圧脱泡槽、下降管（導管）、及び貯留
槽から構成されている。脱泡前の溶融ガラスは、前記溶
融槽に溜められた後、サイフォンの原理によって前記上
昇管から減圧脱泡槽に導かれ、ここで脱泡される。そし
て、脱泡された溶融ガラスは、前記下降管から貯留槽に
導かれ、そして、成形工程に導かれる。以上が前記減圧
脱泡装置による溶融ガラスの処理の流れである。The vacuum degassing apparatus is mainly composed of a dissolution tank, an ascending pipe (conduit), a vacuum degassing tank, a descending pipe (conduit), and a storage tank. The molten glass before defoaming is stored in the melting tank, then guided from the rising pipe to the decompression defoaming tank by the siphon principle, and defoamed there. Then, the degassed molten glass is guided from the downcomer pipe to the storage tank and then to the molding step. The above is the flow of processing molten glass by the vacuum degassing apparatus.
【０００４】ところで、このような減圧脱泡装置に用い
られる前記上昇管及び下降管は、溶融ガラスによって１
２００〜１４００℃程度まで加熱されるため、白金等の
耐熱金属製のものが使用されるとともに、その周囲には
断熱材が被覆され、上昇管及び下降管の放熱が防止され
ている。By the way, the rising pipe and the descending pipe used in such a vacuum degassing apparatus are made of molten glass.
Since it is heated to about 200 to 1400 ° C., a heat-resistant metal such as platinum is used, and a heat insulating material is coated around it to prevent heat dissipation from the rising pipe and the descending pipe.
【０００５】一方、最近の減圧脱泡装置では、上昇管及
び下降管の製造コストを削減する目的で、上昇管及び下
降管を耐火煉瓦によって構成する試みがなされている。
本願出願人は、耐火煉瓦式の導管構造の一例を、特開２
０００−１５９５２５号公報により開示している。On the other hand, in the recent vacuum degassing apparatus, an attempt has been made to construct the rising pipe and the falling pipe from refractory bricks in order to reduce the manufacturing cost of the rising pipe and the falling pipe.
The applicant of the present invention has disclosed an example of a refractory brick type conduit structure in Japanese Patent Application Laid-Open No.
No. 000-159525.
【０００６】かかる導管構造は、断面が略扇形状または
楔形状に形成された複数の耐火煉瓦を円周方向に組み付
けて構成されている。この導管構造によれば、耐火煉瓦
が熱膨張しても、その熱膨張による耐火煉瓦の伸びが主
として放射状に起るので、耐火煉瓦を組み付けた時のバ
ランスが崩れず、熱膨張による導管構造の崩れを抑える
ことができるという利点がある。Such a conduit structure is constructed by assembling a plurality of refractory bricks each having a substantially fan-shaped or wedge-shaped cross section in the circumferential direction. According to this conduit structure, even if the refractory brick thermally expands, the expansion of the refractory brick due to the thermal expansion mainly occurs radially, so the balance when the refractory brick is assembled is not lost, and the conduit structure There is an advantage that the collapse can be suppressed.
【０００７】[0007]
【発明が解決しようとする課題】しかしながら、特開２
０００−１５９５２５号公報等に開示された耐火煉瓦製
導管構造では、耐火煉瓦の目地部の隙間を溶融ガラスＧ
が浸食し、目地部の浸食で溶融ガラスに溶け込んだ煉瓦
成分がガラス製品品質を劣化させるという問題がある。
また、耐火煉瓦の目地部の浸食は少なくても、目地部か
らしみ出た溶融ガラスによって外側のバックアップ炉材
や断熱耐火物が浸食するので、減圧脱泡装置自体の寿命
が短くなるという問題もある。[Patent Document 1] Japanese Unexamined Patent Application Publication No.
In the conduit structure made of refractory bricks disclosed in Japanese Patent Application Laid-Open No. 000-159525, molten glass G is formed in the gap between joints of the refractory brick.
However, there is a problem that the brick component dissolved in the molten glass due to the erosion of the joints deteriorates the quality of glass products.
In addition, even if there is little erosion in the joints of refractory bricks, the molten glass exuding from the joints erodes the external backup furnace material and adiabatic refractories, which also shortens the life of the vacuum degassing apparatus itself. is there.
【０００８】また、導管構造全体が一つの炉材で構成さ
れていれば、最も目地部が少なく、よって浸食も少ない
が、炉材の製造可能な大きさに限界があり導管構造全体
を一つの炉材で構成することは困難であった。Further, if the entire conduit structure is composed of one furnace material, the joint area is the smallest and therefore erosion is also small, but there is a limit to the size of the furnace material that can be manufactured, and the entire conduit structure is It was difficult to construct with furnace material.
【０００９】本発明の目的は、上記問題点を解決するこ
とにあり、目地部の浸食を抑制し、溶融ガラスと直接接
触する耐火煉瓦の目地部からのしみ出しを防止し、もし
くは抑制し、溶融ガラスのバックアップ耐火物や断熱耐
火物の浸食を防止し、長寿命化を図ることができる溶融
ガラスの導管構造及び溶融ガラスの減圧脱泡装置を提供
することにある。An object of the present invention is to solve the above problems, to suppress the erosion of joints and prevent or suppress the exudation of joints of refractory bricks that come into direct contact with molten glass. It is an object of the present invention to provide a conduit structure for molten glass and a vacuum degassing apparatus for molten glass capable of preventing erosion of a backup refractory or adiabatic refractory of molten glass and achieving a long life.
【００１０】[0010]
【課題を解決するための手段】本発明は、前記目的を達
成するために、高温の溶融ガラスが流れる流路が形成さ
れた溶融ガラスの導管構造において、前記導管は、前記
流路の断面形状が所定の形状になるように複数の耐火煉
瓦を組み付けて構成されるとともに、これらの耐火煉瓦
による目地部の外側部に目地部冷却手段が配置されたこ
とを特徴とする。In order to achieve the above-mentioned object, the present invention provides a molten glass conduit structure in which a channel through which high-temperature molten glass flows is formed, wherein the conduit has a cross-sectional shape of the channel. Is constructed by assembling a plurality of refractory bricks so as to have a predetermined shape, and a joint portion cooling means is arranged outside the joint portion formed by these refractory bricks.
【００１１】請求項１に記載の発明によれば、複数の耐
火煉瓦を組み付けて構成される流路の目地部の外側部に
目地部冷却手段を配置し、この目地部冷却手段で目地部
を冷却することにより、目地部の浸食を抑制し、目地部
に浸入してきた溶融ガラスを冷却し、目地部からの溶融
ガラスのしみ出しを防止でき、かつ、耐火煉瓦の外側に
配置されたバックアップ炉材や断熱耐火物の浸食を防止
できる。請求項１に記載の発明は、流路の断面形状につ
いては限定しておらず、矩形状、多角形形状、又は円形
状でもよい。また、流路の断面形状とは、溶融ガラスの
流れる方向に対して、垂直な断面の形状を意味する。According to the first aspect of the present invention, the joint portion cooling means is arranged outside the joint portion of the flow path constituted by assembling a plurality of refractory bricks, and the joint portion is cooled by the joint portion cooling means. Cooling suppresses the erosion of the joints, cools the molten glass that has infiltrated into the joints, prevents the exudation of the molten glass from the joints, and is a backup furnace placed outside the refractory bricks. Erosion of materials and heat-resistant refractories can be prevented. In the invention described in claim 1, the cross-sectional shape of the flow channel is not limited, and may be rectangular, polygonal, or circular. Further, the cross-sectional shape of the flow channel means a cross-sectional shape perpendicular to the flowing direction of the molten glass.
【００１２】また、本発明は、前記目的を達成するため
に、高温の溶融ガラスが流れる流路が形成された溶融ガ
ラスの導管構造において、前記導管は、前記流路の断面
形状が多角形形状になるように複数の耐火煉瓦を組み付
けて構成されるとともに、これらの耐火煉瓦による目地
部が多角形形状流路の隅部に形成され、該目地部の外側
部に目地部冷却手段が配置されたことを特徴とする。In order to achieve the above object, the present invention provides a molten glass conduit structure having a flow path through which high-temperature molten glass flows, wherein the conduit has a polygonal cross section. Is constructed by assembling a plurality of refractory bricks, and joints formed by these refractory bricks are formed in the corners of the polygonal flow path, and joint cooling means is arranged outside the joints. It is characterized by that.
【００１３】請求項２に記載の発明は、以下の点に着目
してなされたものである。すなわち、導管の流路を流れ
る溶融ガラスは、多角形形状をなす流路の断面での辺
部、隅部等の流速を比較すると、流路の辺部における流
速よりも、流路の隅部における流速が低くなっている。
一方で、溶融ガラスによる煉瓦浸食を最も受け易いのは
耐火煉瓦の目地部であり、その目地部のうち、接触して
いる溶融ガラスの流速が早い目地部ほど浸食の進行は早
い。The invention described in claim 2 is made by paying attention to the following points. That is, when comparing the flow velocities of the sides, corners, etc. in the cross section of the polygonal flow passage, the molten glass flowing in the flow passage of the conduit has a corner portion of the flow passage more than a flow velocity at the side portion of the flow passage. The flow velocity at is low.
On the other hand, it is the joints of refractory bricks that are most susceptible to brick erosion by molten glass, and the erosion progresses faster in the joints where the flow velocity of the molten glass in contact is faster.
【００１４】よって、目地部の浸食を最低限に抑えるた
めには、本願請求項２に記載の如く、流路の断面を多角
形形状に形成するとともに、この断面多角形形状の流路
において、溶融ガラスの流速が遅い隅部に目地部を形成
すればよい。これにより、耐火煉瓦製導管において、溶
融ガラスによる目地部の浸食を最小限に抑えることがで
きる。また、請求項２に記載の発明は、目地部の外側部
に目地部冷却手段を配置し、この目地部冷却手段で目地
部を冷却することにより、目地部に浸入してきた溶融ガ
ラスを冷却し、目地部からの溶融ガラスのしみ出しを防
止でき、かつ、耐火煉瓦の外側に配置されたバックアッ
プ炉材や断熱耐火物の浸食を防止できる。Therefore, in order to minimize the erosion of the joint portion, as described in claim 2 of the present application, the cross section of the flow channel is formed in a polygonal shape, and in the flow channel having the polygonal cross section, It suffices to form joints at the corners where the flow velocity of the molten glass is slow. Thereby, in the refractory brick conduit, the erosion of the joint portion by the molten glass can be minimized. Further, in the invention according to claim 2, the joint portion cooling means is arranged on the outer side of the joint portion, and the joint portion is cooled by the joint portion cooling means to cool the molten glass that has penetrated into the joint portion. It is possible to prevent the molten glass from seeping out from the joint portion and prevent the erosion of the backup furnace material and the heat-resistant refractory arranged outside the refractory brick.
【００１５】ところで、目地部からの溶融ガラスのしみ
出しを防止するためには、耐火煉瓦の厚みを厚くして目
地部の長さを長くすることが一つの解消手段となり得
る。しかしながら、耐火煉瓦の厚みを単に厚くした場
合、耐火煉瓦のコストが膨大になるという問題がある。
また、コスト削減を考慮して耐火煉瓦の厚みを薄くした
場合には、耐火煉瓦の強度が弱くなるという問題があ
る。By the way, in order to prevent the molten glass from seeping out from the joints, it is possible to solve the problem by increasing the thickness of the refractory brick to increase the length of the joints. However, if the refractory brick is simply thickened, there is a problem that the cost of the refractory brick becomes enormous.
Further, when the thickness of the refractory brick is reduced in consideration of cost reduction, there is a problem that the strength of the refractory brick becomes weak.
【００１６】請求項３に記載の発明は、上記問題を解消
するためになされたものであり、すなわち、前記導管の
流路断面を構成する複数の耐火煉瓦は、前記耐火煉瓦の
両端において突出した耳部を有するユニット耐火煉瓦で
あって、前記耳部は流路の外側に突出しており、前記ユ
ニット耐火煉瓦を前記耳部においてそれぞれ当接させ、
目地部が流路の中心から放射状に伸びる様に形成されて
いることを特徴としている。The invention as set forth in claim 3 is made in order to solve the above-mentioned problem, that is, a plurality of refractory bricks constituting the flow passage cross section of the conduit are projected at both ends of the refractory brick. A unit refractory brick having ears, wherein the ears project to the outside of the flow path, and the unit refractory bricks are brought into contact with each other at the ears,
The joint portion is formed so as to extend radially from the center of the flow channel.
【００１７】これにより、本願請求項３に記載の発明
は、耐火煉瓦の厚みを厚くすることなく目地部の長さを
長くとることができるので、耐火煉瓦コストを抑えて目
地部からの溶融ガラスのしみ出しを防止できる。また、
耐火煉瓦を薄くする必要もないので、耐火煉瓦の強度を
保持できる。Thus, in the invention according to claim 3 of the present application, the length of the joint portion can be increased without increasing the thickness of the refractory brick, so that the cost of the refractory brick can be suppressed and the molten glass from the joint portion can be suppressed. The exudation can be prevented. Also,
Since it is not necessary to make the refractory brick thin, the strength of the refractory brick can be maintained.
【００１８】請求項４記載の発明は、溶融ガラスの減圧
脱泡装置の上昇管と下降管のうち少なくとも一方を、請
求項１、２又は３のうちいずれか１項に記載された溶融
ガラスの導管構造を採用したので、使用寿命の長い減圧
脱泡装置を提供できる。According to a fourth aspect of the present invention, at least one of the ascending pipe and the descending pipe of the vacuum degassing apparatus for molten glass is provided with the molten glass according to any one of claims 1, 2 and 3. Since the conduit structure is adopted, it is possible to provide a vacuum degassing apparatus having a long service life.
【００１９】[0019]
【発明の実施の形態】以下、添付図面に従って本発明に
係る溶融ガラスの導管構造の実施の形態について詳説す
る。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a molten glass conduit structure according to the present invention will be described below in detail with reference to the accompanying drawings.
【００２０】図１には、実施の形態に係る導管構造が適
用された溶融ガラスの減圧脱泡装置の斜視図が示され、
図２はその断面図が示されている。FIG. 1 is a perspective view of a vacuum degassing apparatus for molten glass to which the conduit structure according to the embodiment is applied.
FIG. 2 shows a sectional view thereof.
【００２１】図１、図２に示す実施の形態の溶融ガラス
の減圧脱泡装置１０は、略門型のステンレス製減圧ハウ
ジング１２と、 減圧ハウジング１２内に水平に収納配置
され矩形断面をもつ減圧脱泡槽１４と、減圧ハウジング
１２内に垂直に収納配置され、減圧脱泡槽１４の左右両
端部にそれぞれ、各上端部が取り付けられる上昇管１６
および下降管１８とから構成される。A vacuum degassing apparatus 10 for molten glass according to the embodiment shown in FIGS. 1 and 2 is a substantially gate-shaped vacuum housing 12 made of stainless steel, and a vacuum housing 12 is horizontally housed in the vacuum housing 12 and has a rectangular cross section. A degassing tank 14 and a riser pipe 16 which is vertically housed in the decompression housing 12 and has upper ends attached to the left and right ends of the decompression degassing tank 14, respectively.
And downcomer 18.
【００２２】減圧脱泡装置１０は、上流案内管２０内の
溶融ガラスＧを減圧脱泡処理して、図示しない次の処理
槽、例えば、フロートバスなどの板材の成形処理槽や瓶
などの成形作業槽などに連続的に供給するプロセスに用
いられる。The vacuum degassing apparatus 10 degasses the molten glass G in the upstream guide pipe 20 under reduced pressure to form a next processing tank (not shown), for example, a plate material forming processing tank such as a float bath or a bottle. It is used in the process of continuously supplying to a work tank.
【００２３】上昇管１６の下端に連結された上流案内管
２０は、不図示の溶解槽に連通した上流側ピット２２の
溶融ガラスＧ内に浸漬されている。また、下降管１８の
下端に連結された下流案内管２４は、次の処理槽に連通
する下流側ピット２６の溶融ガラスＧ内に浸漬されてい
る。The upstream guide pipe 20 connected to the lower end of the ascending pipe 16 is immersed in the molten glass G in the upstream pit 22 communicating with a melting tank (not shown). The downstream guide pipe 24 connected to the lower end of the downcomer pipe 18 is immersed in the molten glass G in the downstream pit 26 that communicates with the next processing tank.
【００２４】そして、減圧脱泡槽１４は、減圧ハウジン
グ１２に形成された不図示の吸引口から、不図示の真空
ポンプによって真空吸引されて内部が所定の気圧に減圧
される。これにより、上流側ピット２２内の脱泡処理前
の溶融ガラスＧは、サイフォンの原理により、上流案内
管２０及び上昇管１６を介して吸引上昇されて減圧脱泡
槽１４に導入される。そして、減圧下にある減圧脱泡槽
１４内で減圧脱泡処理が行われた後、下降管１８及び下
流案内管２４を介して下降し、下流側ピット２６に導出
される。The vacuum degassing tank 14 is vacuum-sucked by a vacuum pump (not shown) from a suction port (not shown) formed in the vacuum housing 12 to reduce the internal pressure to a predetermined atmospheric pressure. As a result, the molten glass G in the upstream pit 22 before the defoaming process is sucked up through the upstream guide pipe 20 and the rising pipe 16 by the siphon principle and introduced into the decompression degassing tank 14. Then, after decompression defoaming processing is performed in the decompression degassing tank 14 under reduced pressure, it descends via the descending pipe 18 and the downstream guide pipe 24, and is led to the downstream pit 26.
【００２５】減圧ハウジング１２は略門型に形成され
て、減圧脱泡槽１４を減圧する際の気密性を確保するた
めのケーシング（圧力容器) として機能し、その両端部
には、上昇管１６を収納する脚部１２Ａと下降管１８を
収納する脚部１２Ｂとが形成されている。The decompression housing 12 is formed in a substantially gate shape and functions as a casing (pressure container) for ensuring airtightness when decompressing the decompression degassing tank 14, and an ascending pipe 16 is provided at both ends thereof. And a leg portion 12B for accommodating the downcomer pipe 18 are formed.
【００２６】減圧脱泡槽１４は、多数の耐火煉瓦２８を
組み付けることにより構成され、また、上昇管１６及び
下降管１８も同様に多数の耐火煉瓦３０、３０…を組み
付けることにより構成されている。The vacuum degassing tank 14 is constructed by assembling a large number of refractory bricks 28, and similarly, the rising pipe 16 and the descending pipe 18 are also constructed by assembling a large number of refractory bricks 30, 30 ... .
【００２７】本発明の減圧脱泡装置１０においては、減
圧脱泡槽１４、上昇管１６および下降管１８を構成する
多数の耐火煉瓦２８および多数の耐火煉瓦３０は緻密質
電鋳耐火物が用いられることが好ましい。すなわち、減
圧脱泡装置１０における溶融ガラスと直接接触する主要
部分を緻密質電鋳耐火物である電鋳耐火物製煉瓦を組み
上げて形成することにより、従来から用いられてきた貴
金属合金製のものよりも、コストを大幅に低減し、した
がって自由な形状で、かつ、自由な厚さに設計すること
ができる。その結果、減圧脱泡装置１０の大容量化が実
現するとともに、より高温での減圧脱泡処理も行えるよ
うになる。In the vacuum degassing apparatus 10 of the present invention, dense refractory refractory is used as a large number of refractory bricks 28 and a large number of refractory bricks 30 constituting the vacuum degassing tank 14, the rising pipe 16 and the descending pipe 18. Preferably. That is, the main part of the vacuum degassing apparatus 10 that comes into direct contact with the molten glass is formed by assembling bricks made of electroformed refractory, which is a dense electroformed refractory, to form a noble metal alloy that has been conventionally used. The cost can be significantly reduced, and therefore, the shape can be designed to have a free shape and a free thickness. As a result, the capacity of the vacuum degassing apparatus 10 can be increased, and the vacuum degassing process can be performed at a higher temperature.
【００２８】電鋳耐火物製煉瓦としては、耐火原料を電
気溶融した後、所定形状に鋳込み成形したものであれば
特に限定されず、従来公知の各種の電鋳耐火物製煉瓦を
使用すればよい。The electroformed refractory brick is not particularly limited as long as it is obtained by electrically melting a refractory raw material and then cast into a predetermined shape, and various known electroformed refractory bricks can be used. Good.
【００２９】中でも耐蝕性が高く、素地からの発泡も少
ない点でアルミナ（Ａｌ2 Ｏ 3）系電鋳耐火物製煉瓦、
ジルコニア（ＺｒＯ2 ）系電鋳耐火物製煉瓦、アルミナ
−ジルコニア−シリカ（Ａｌ2 Ｏ 3−ＺｒＯ2 −ＳｉＯ
2 ）系電鋳耐火物製煉瓦等が好適に例示され、具体的に
は、溶融ガラスＧの温度が１３００℃以下の場合はマー
スナイト（ＭＢ）を、１３００℃以上の場合はＺＢ−Ｘ
９５０、ジルコナイト（ＺＢ）（いずれも旭硝子株式会
社製）等を用いるのが好ましい。Among them, alumina (Al 2 O 3 ) type electroformed refractory bricks, which have high corrosion resistance and little foaming from the substrate,
Zirconia (ZrO 2 ) type electroformed refractory brick, alumina-zirconia-silica (Al 2 O 3 —ZrO 2 —SiO 2
2 ) A system electrocast refractory brick or the like is preferably exemplified. Specifically, when the temperature of the molten glass G is 1300 ° C. or lower, Marsnite (MB) is used, and when it is 1300 ° C. or higher, ZB-X.
It is preferable to use 950, zirconite (ZB) (all manufactured by Asahi Glass Co., Ltd.), or the like.
【００３０】本実施の形態では緻密質電鋳耐火物を用い
るが、緻密質電鋳耐火物に限定されず、緻密質焼成耐火
物を用いてもよい。Although a dense electroformed refractory material is used in the present embodiment, it is not limited to the dense electroformed refractory material, and a dense fired refractory material may be used.
【００３１】緻密質焼成耐火物として用いられる緻密質
焼成耐火物製煉瓦としては、緻密質アルミナ系耐火物製
煉瓦、緻密質ジルコニア−シリカ系耐火物製煉瓦、およ
び緻密質アルミナ−ジルコニア−シリカ系耐火物製煉瓦
の少なくとも１種の緻密質焼成耐火物製煉瓦であること
が好ましい。Examples of the dense fired refractory bricks used as the dense fired refractory include dense alumina refractory bricks, dense zirconia-silica refractory bricks, and dense alumina-zirconia-silica refractories. It is preferable that at least one kind of refractory brick is a dense fired refractory brick.
【００３２】減圧ハウジング１２は、減圧脱泡槽１４に
必要とされる気密性、及び強度を有するものであれば、
その材質、構造は特に限定されるものではないが、外表
面側については金属製、特にステンレス製または耐熱鋼
製とすることが耐久性の観点から好ましい。If the vacuum housing 12 has the airtightness and strength required for the vacuum degassing tank 14,
The material and structure thereof are not particularly limited, but it is preferable from the viewpoint of durability that the outer surface side is made of metal, particularly stainless steel or heat-resistant steel.
【００３３】次に、上昇管１６及び下降管１８の構成に
ついて説明する。なお、実施の形態では、上昇管１６と
下降管１８とは同一の構造なので、ここでは、上昇管１
６についてのみ説明し、下降管１８についてはその説明
を省略する。Next, the structures of the ascending pipe 16 and the descending pipe 18 will be described. In the embodiment, the ascending pipe 16 and the descending pipe 18 have the same structure.
6 will be described, and the description of the downcomer 18 will be omitted.
【００３４】図３は、上昇管１６の縦断面図であり、図
４は図３上４−４線から見た上昇管１６の横断面図であ
り、上昇管１６の全体断面を示している。FIG. 3 is a vertical cross-sectional view of the rising pipe 16, and FIG. 4 is a horizontal cross-sectional view of the rising pipe 16 taken along the line 4-4 in FIG. 3, showing the entire cross-section of the rising pipe 16. .
【００３５】上昇管１６は図３に示すように、縦方向に
複数の耐火煉瓦３０、３０…が積み重ねられて構成され
る。実施の形態では耐火煉瓦３０を３段積み重ねて上昇
管１６を構成しているが、その段数は３段に限定される
ものではない。As shown in FIG. 3, the rising pipe 16 is constructed by stacking a plurality of refractory bricks 30, 30, ... Vertically. In the embodiment, the refractory bricks 30 are stacked in three stages to form the rising pipe 16, but the number of stages is not limited to three.
【００３６】また、上昇管１６は、図４に示すように溶
融ガラスの流路３２の断面形状が円形状になるように、
８個の耐火煉瓦３０、３０…を組み付けて構成されてい
る。耐火煉瓦３０の個数は８個に限定されるものではな
い。As shown in FIG. 4, the rising pipe 16 is designed so that the cross section of the flow path 32 for the molten glass is circular.
It is configured by assembling eight refractory bricks 30, 30 ... The number of refractory bricks 30 is not limited to eight.
【００３７】更に、これらの耐火煉瓦３０、３０…によ
る目地部３４、３４…の外側に目地部３４を塞ぐように
冷却管（目地部冷却手段）４０が配設されている。この
冷却管４０には、目地部３４を冷却するための水が不図
示のポンプにより供給されている。なお、冷却管４０
は、図４において目地部３４に対応して８本配設される
が、各々独立してポンプに接続してもよく、また、８本
の冷却管４０、４０…を連結して１本構造にし、この１
本の冷却管４０にポンプを接続してもよい。また、冷却
管４０の中を流す媒体としては、水に限らずエアーであ
ってもよい。Further, a cooling pipe (joint portion cooling means) 40 is arranged outside the joint portions 34, 34 ... Made of these refractory bricks 30, 30 ... so as to close the joint portions 34. Water for cooling the joint portion 34 is supplied to the cooling pipe 40 by a pump (not shown). The cooling pipe 40
4 are arranged corresponding to the joint portion 34 in FIG. 4, but each may be independently connected to the pump, and the eight cooling pipes 40, 40 ... Are connected to form one structure. And this one
A pump may be connected to the book cooling pipe 40. Further, the medium flowing in the cooling pipe 40 is not limited to water and may be air.
【００３８】なお、上昇管１６を収納する減圧ハウジン
グ１２の脚部１２Ａと、耐火煉瓦３０、３０…との隙間
には、不定形耐火物（耐熱材）３８が設けられている。
この不定形耐火物３８によって上昇管１６の放熱が抑制
されている。なお、耐熱材は、不定形耐火物３８に限定
されるものではなく、断熱煉瓦でもよい。An irregular refractory material (heat-resistant material) 38 is provided in the gap between the leg portion 12A of the decompression housing 12 which houses the rising pipe 16 and the refractory bricks 30, 30.
The irregular refractory 38 suppresses heat dissipation from the rising pipe 16. The heat resistant material is not limited to the amorphous refractory material 38, and may be a heat insulating brick.
【００３９】次に、実施の形態の上昇管１６の特徴につ
いて述べる。Next, the features of the rising pipe 16 of the embodiment will be described.
【００４０】溶融ガラスＧによる煉瓦浸食を最も受け易
いのは耐火煉瓦の目地部である。実施の形態の上昇管１
６は、目地部３４の外側部に冷却管４０を配置し、この
冷却管４０を流れる水等によって目地部３４を冷却して
いる。これにより、目地部３４の浸食が抑制されるとと
もに、目地部３４に浸入してきた溶融ガラスＧは冷却さ
れるので、溶融ガラスＧは目地部３４からしみ出さな
い。したがって、耐火煉瓦３０の外側に配置されたバッ
クアップ炉材や不定形耐火物３８の溶融ガラスＧによる
浸食を防止できる。It is the joints of the refractory bricks that are most susceptible to brick erosion by the molten glass G. Ascending pipe 1 of the embodiment
In No. 6, a cooling pipe 40 is arranged outside the joint portion 34, and the joint portion 34 is cooled by water flowing through the cooling pipe 40. As a result, the erosion of the joint portion 34 is suppressed, and the molten glass G that has entered the joint portion 34 is cooled, so that the molten glass G does not exude from the joint portion 34. Therefore, it is possible to prevent erosion of the backup furnace material and the amorphous refractory 38 arranged outside the refractory bricks 30 by the molten glass G.
【００４１】図５は、第２の実施の形態の導管構造を示
す上昇管１１６の横断面図である。FIG. 5 is a cross-sectional view of the rising pipe 116 showing the conduit structure of the second embodiment.
【００４２】上昇管１１６は、溶融ガラスの流路３２の
断面形状が矩形状（正方形又は長方形）になるように、
４個の耐火煉瓦１３０、１３０…を組み付けて構成され
ている。更に、これらの耐火煉瓦１３０、１３０…によ
る目地部１３４、１３４…が矩形状流路３２の４隅部１
３６、１３６…にのみ位置するように、４個の耐火煉瓦
１３０、１３０…が組み付けられている。すなわち、耐
火煉瓦１３０の両辺部を突き合わせるとともに密着させ
て４個の耐火煉瓦１３０、１３０…が組み付けられてい
る。これにより、４個の耐火煉瓦１３０、１３０…で囲
まれた矩形状流路３２が形成される。なお、流路３２の
断面は、円形状や矩形状に限定されない。The rising pipe 116 is so constructed that the cross-sectional shape of the flow path 32 for molten glass is rectangular (square or rectangular).
It is constructed by assembling four refractory bricks 130, 130 ... Further, the joints 134, 134, ... By the refractory bricks 130, 130 ... Are the four corners 1 of the rectangular channel 32.
Four refractory bricks 130, 130 ... Are assembled so as to be located only at 36, 136. That is, the four refractory bricks 130, 130 ... Are assembled by abutting and closely contacting both sides of the refractory brick 130. As a result, the rectangular flow path 32 surrounded by the four refractory bricks 130, 130 ... Is formed. The cross section of the channel 32 is not limited to a circular shape or a rectangular shape.
【００４３】また、隣接する耐火煉瓦１３０、１３０の
目地部１３４の外側には、目地部１３４を塞ぐように冷
却管４０が配置されている。A cooling pipe 40 is disposed outside the joint portion 134 of the adjacent refractory bricks 130, 130 so as to close the joint portion 134.
【００４４】次に、実施の形態の上昇管１１６の特徴に
ついて述べる。Next, the features of the rising pipe 116 of the embodiment will be described.
【００４５】まず、上昇管１１６の流路３２を流れる溶
融ガラスＧは、流路３２の辺部１３５における流速より
も、流路３２の隅部１３６における流速が低くなってい
る。First, the molten glass G flowing in the flow passage 32 of the rising pipe 116 has a lower flow velocity in the corner portion 136 of the flow passage 32 than in the side portion 135 of the flow passage 32.
【００４６】一方で、溶融ガラスＧによる煉瓦浸食を最
も受け易いのは耐火煉瓦１３０、１３０…の目地部１３
４、１３４…であり、その目地部１３４、１３４…のう
ち、接触している溶融ガラスＧの流速が早い目地部１３
４、１３４…ほど浸食の進行は早い。On the other hand, the joints 13 of the refractory bricks 130, 130 ... are most susceptible to brick erosion by the molten glass G.
4, of the joint portions 134, 134, ..., Of which, the joint portion 13 in which the molten glass G in contact has a high flow velocity.
4,134 ... The progress of erosion is faster.
【００４７】よって、目地部１３４、１３４…の浸食を
最低限に抑えるためには、図５に示す上昇管１１６の如
く、流路３２の断面を矩形状に形成するとともに、この
断面形状の流路３２において、溶融ガラスＧの流速が遅
い４隅部１３６、１３６…に目地部１３４、１３４…を
形成すればよい。Therefore, in order to minimize the erosion of the joints 134, 134, ..., Like the ascending pipe 116 shown in FIG. 5, the flow passage 32 is formed in a rectangular cross section, and the flow of this cross sectional shape is formed. In the passage 32, the joints 134, 134 ... May be formed at the four corners 136, 136 ... Where the flow velocity of the molten glass G is slow.
【００４８】これにより、図５に示す構造の導管を採用
することによって、溶融ガラスＧによる目地部１３４の
浸食を最小限に抑えることができ、導管の使用寿命が最
大限に延びる。Thus, by adopting the conduit having the structure shown in FIG. 5, erosion of the joint portion 134 by the molten glass G can be minimized, and the useful life of the conduit is extended to the maximum.
【００４９】また、実施の形態の上昇管１１６は、目地
部１３４の外側部に冷却管４０を配置し、この冷却管４
０を流れる水等によって目地部１３４を外側より冷却し
ている。これにより、目地部１３４の浸食が抑制される
とともに、目地部１３４に浸入してきた溶融ガラスＧは
冷却されるので、溶融ガラスＧは目地部１３４からしみ
出さない。したがって、耐火煉瓦１３０の外側に配置さ
れたバックアップ炉材や不定形耐火物３８の溶融ガラス
Ｇによる浸食を防止できる。In the rising pipe 116 of the embodiment, the cooling pipe 40 is arranged outside the joint portion 134, and the cooling pipe 4 is provided.
The joint portion 134 is cooled from the outside by water or the like flowing in 0. As a result, the erosion of the joint portion 134 is suppressed, and the molten glass G that has entered the joint portion 134 is cooled, so that the molten glass G does not exude from the joint portion 134. Therefore, it is possible to prevent erosion of the backup furnace material and the amorphous refractory 38 arranged outside the refractory bricks 130 by the molten glass G.
【００５０】図６は、第３の実施の形態の導管構造を示
す上昇管２１６の横断面図である。FIG. 6 is a cross sectional view of the rising pipe 216 showing the conduit structure of the third embodiment.
【００５１】上昇管２１６は、図５と同様に溶融ガラス
の流路３２の断面形状が矩形状になるように、４個のユ
ニット耐火煉瓦２３０、２３０…を組み付けて構成され
ている。As with FIG. 5, the rising pipe 216 is constructed by assembling four unit refractory bricks 230, 230 ... In order that the cross-sectional shape of the flow path 32 for the molten glass becomes rectangular.
【００５２】ところで、目地部からの溶融ガラスＧのし
み出しを防止するためには、耐火煉瓦の厚みを厚くして
目地部の長さを長くすることが一つの解消手段である
が、耐火煉瓦の厚みを単に厚くした場合、耐火煉瓦のコ
ストが膨大になるという問題がある。また、コスト削減
を考慮して耐火煉瓦の厚みを薄くした場合には、耐火煉
瓦の強度が低下するという問題がある。By the way, in order to prevent the molten glass G from seeping out from the joint portion, one means for solving the problem is to increase the thickness of the refractory brick to increase the joint length. If the thickness of the brick is simply increased, the cost of the refractory brick becomes enormous. Further, when the thickness of the refractory brick is reduced in consideration of cost reduction, there is a problem that the strength of the refractory brick decreases.
【００５３】そこで、実施の形態の上昇管２１６は、上
記問題を解消するために、目地部２３４を形成するユニ
ット耐火煉瓦２３０は、両端において突出した耳部２３
０Ａ、２３０Ａを有し、耳部２３０Ａ、２３０Ａは、流
路の外側へ突出しており、ユニット耐火煉瓦２３０を耳
部２３０Ａにおいてそれぞれ当接させ、目地部２３４が
流路の中心から放射状に伸びる様に形成されている。Therefore, in the rising pipe 216 of the embodiment, in order to solve the above-mentioned problem, the unit refractory brick 230 forming the joint portion 234 has the ear portion 23 protruding at both ends.
0A, 230A, the ears 230A, 230A project to the outside of the flow path, and the unit refractory bricks 230 are brought into contact with each other at the ears 230A, so that the joint 234 extends radially from the center of the flow path. Is formed in.
【００５４】これにより、実施の形態の上昇管２１６
は、ユニット耐火煉瓦２３０の厚みを厚くすることなく
目地部２３４の長さを長くとることができるので、煉瓦
コストを抑えて目地部２３４からの溶融ガラスＧのしみ
出しを防止できる。また、ユニット耐火煉瓦２３０を薄
くする必要もないので、ユニット耐火煉瓦２３０の強度
を保持できる。As a result, the rising pipe 216 of the embodiment
Since the joint portion 234 can be made long without increasing the thickness of the unit refractory brick 230, the brick cost can be suppressed and the exudation of the molten glass G from the joint portion 234 can be prevented. Further, since it is not necessary to make the unit refractory brick 230 thin, the strength of the unit refractory brick 230 can be maintained.
【００５５】図７は、第４の実施の形態の導管構造を示
す上昇管３１６の横断面図である。FIG. 7 is a cross-sectional view of the rising pipe 316 showing the conduit structure of the fourth embodiment.
【００５６】同図に示す上昇管３１６は、６個のユニッ
ト耐火煉瓦３３０、３３０…を組み付けることにより構
成され、その流路３２の横断面が六角形形状に形成され
ている。また、上昇管３１６は、目地部３３４の外側部
に冷却管４０が配置され、この冷却管４０を流れる水等
によって目地部３３４が冷却されている。また、目地部
３３４を形成するユニット耐火煉瓦３３０は、両端にお
いて突出した耳部３３０、３３０Ａを有し、耳部３３０
Ａ、３３０Ａは、流路の外側へ突出しており、ユニット
耐火煉瓦３３０を耳部３３０Ａにおいてそれぞれ当接さ
せ、目地部３３４が流路の中心から放射状に伸びる様に
形成されている。The ascending pipe 316 shown in the figure is constructed by assembling six unit refractory bricks 330, 330 ... And the cross section of the flow passage 32 is formed in a hexagonal shape. Further, in the rising pipe 316, the cooling pipe 40 is arranged outside the joint portion 334, and the joint portion 334 is cooled by water or the like flowing through the cooling pipe 40. Further, the unit refractory brick 330 forming the joint portion 334 has the ear portions 330 and 330A protruding at both ends.
A and 330A are projected to the outside of the flow path, the unit refractory bricks 330 are made to abut at the ear parts 330A, and the joint parts 334 are formed to extend radially from the center of the flow path.
【００５７】したがって、横断面六角形形状の流路３２
をもつ上昇管３１６も、図６に示した横断面矩形状の流
路３２をもつ上昇管２１６と同様な効果を奏する。な
お、流路３２の断面は矩形状や六角形形状に限定される
ものではない。Therefore, the channel 32 having a hexagonal cross section
The ascending pipe 316 having the same structure also has the same effect as the ascending pipe 216 having the flow channel 32 having a rectangular cross section shown in FIG. The cross section of the channel 32 is not limited to a rectangular shape or a hexagonal shape.
【００５８】以上述べた実施の形態では、上昇管１６と
下降管１８の双方を図４、図５、図６及び図７に示す耐
火煉瓦製導管構造にしたが、片方のみを実施の形態の構
造としてもよい。また、減圧脱泡装置の上昇管１６、下
降管１８に本発明の導管構造を適用した例について説明
したが、高温の溶融ガラスＧが流れる流路を持つ導管で
あれば、本発明の導管構造を適用できる。In the above-described embodiment, both the ascending pipe 16 and the descending pipe 18 have the refractory brick conduit structure shown in FIGS. 4, 5, 6 and 7, but only one of them is of the embodiment. It may be a structure. Further, an example in which the conduit structure of the present invention is applied to the ascending pipe 16 and the descending pipe 18 of the vacuum degassing apparatus has been described. Can be applied.
【００５９】また、図４に示した耐火煉瓦３０の両端部
分を本体部分よりも流路３２の外側に延出形成し、この
延出した部分の外側に冷却管４０を配置してもよい。Further, both end portions of the refractory brick 30 shown in FIG. 4 may be formed so as to extend outside the flow path 32 beyond the main body portion, and the cooling pipe 40 may be arranged outside the extended portion.
【００６０】[0060]
【発明の効果】以上説明したように本発明に係る溶融ガ
ラスの導管構造によれば、複数の耐火煉瓦を組み付けて
構成される流路の目地部の外側部に目地部冷却手段を配
置し、この目地部冷却手段で目地部を冷却することによ
り、目地部に浸入してきた溶融ガラスを冷却し、目地部
の浸食を抑制し、目地部からの溶融ガラスのしみ出しを
防止でき、かつ、耐火煉瓦の外側に配置されたバックア
ップ炉材や断熱耐火物の浸食を防止できる。As described above, according to the conduit structure for molten glass according to the present invention, the joint portion cooling means is arranged on the outer side of the joint portion of the flow path constituted by assembling a plurality of refractory bricks, By cooling the joint part with this joint part cooling means, the molten glass that has entered the joint part is cooled, erosion of the joint part is suppressed, and exudation of the molten glass from the joint part can be prevented, and fire resistance It is possible to prevent erosion of backup furnace materials and heat-resistant refractories placed on the outside of bricks.
【００６１】また、本発明によれば、流路の断面を多角
形形状に形成するとともに、この断面多角形形状の流路
において、溶融ガラスの流速が遅い隅部に目地部を形成
したので、目地部の浸食を抑えることができ、かつ、目
地部の外側部に目地部冷却手段を配置し、この目地部冷
却手段で目地部を冷却することにより、目地部の浸食を
防止し、目地部に浸入してきた溶融ガラスを冷却し、目
地部からの溶融ガラスのしみ出しを防止したので、耐火
煉瓦の外側に配置されたバックアップ炉材や断熱耐火物
の浸食を防止できる。Further, according to the present invention, since the cross section of the flow channel is formed in a polygonal shape, and in the flow channel having the polygonal cross section, the joint portion is formed at the corner where the flow velocity of the molten glass is slow, Erosion of the joint can be suppressed, and the joint cooling means is arranged on the outer side of the joint, and by cooling the joint with this joint cooling means, the corrosion of the joint can be prevented, and the joint can be prevented. Since the molten glass that has infiltrated into the refractory is cooled and exudation of the molten glass from the joints is prevented, it is possible to prevent erosion of the backup furnace material and adiabatic refractory disposed outside the refractory brick.
【００６２】また、本発明は、導管の流路断面を構成す
る複数の耐火煉瓦は、耐火煉瓦の両端において突出した
耳部を有するユニット耐火煉瓦であって、耳部は流路の
外側に突出しており、ユニット耐火煉瓦を前記耳部にお
いてそれぞれ当接させ、目地部が流路の中心から放射状
に伸びる様に形成したので、耐火煉瓦の厚みを厚くする
ことなく目地部の長さを長くとることができる。よっ
て、耐火煉瓦コストを抑えて目地部からの溶融ガラスの
しみ出しを防止できる。更に、耐火煉瓦を薄くする必要
もないので、耐火煉瓦の強度を低下させることなく、よ
って、ガラスの高品質を保持できる。Further, according to the present invention, the plurality of refractory bricks forming the channel cross section of the conduit is a unit refractory brick having protruding ears at both ends of the refractory brick, and the ears projecting to the outside of the channel. The unit refractory bricks are brought into contact with each other at the ears, and the joints are formed so as to extend radially from the center of the flow path, so that the joints are made longer without increasing the thickness of the refractory bricks. be able to. Therefore, the cost of refractory bricks can be suppressed and the exudation of the molten glass from the joint can be prevented. Furthermore, since it is not necessary to make the refractory brick thin, the strength of the refractory brick is not reduced, and thus the high quality of the glass can be maintained.
【００６３】一方、本発明に係る溶融ガラスの減圧脱泡
装置によれば、溶融ガラスの減圧脱泡装置の上昇管と下
降管のうち少なくとも一方に、前記溶融ガラスの導管構
造を採用したので、使用寿命が長くなる。On the other hand, according to the vacuum degassing apparatus for molten glass of the present invention, the above-mentioned molten glass conduit structure is used for at least one of the ascending pipe and the descending pipe of the vacuum degassing apparatus for molten glass. Use life is extended.
【図１】実施の形態に係る導管構造が適用された減圧脱
泡装置を示す斜視図FIG. 1 is a perspective view showing a vacuum degassing apparatus to which a conduit structure according to an embodiment is applied.
【図２】図１に示した減圧脱泡装置の断面図2 is a sectional view of the vacuum degassing apparatus shown in FIG.
【図３】上昇管の第１の実施の形態を示す拡大断面図FIG. 3 is an enlarged sectional view showing a first embodiment of a rising pipe.
【図４】図３に示した上昇管の横断面図FIG. 4 is a cross-sectional view of the rising pipe shown in FIG.
【図５】上昇管の第２の実施の形態を示す横断面図FIG. 5 is a cross-sectional view showing a second embodiment of the rising pipe.
【図６】上昇管の第３の実施の形態を示す横断面図FIG. 6 is a cross-sectional view showing a third embodiment of a rising pipe.
【図７】上昇管の第４の実施の形態を示す横断面図FIG. 7 is a cross-sectional view showing a fourth embodiment of a rising pipe.
１０…減圧脱泡装置、１２…減圧ハウジング、１４…減
圧脱泡槽、１６、１１６、２１６、３１６…上昇管、１
８…下降管、２０…上流案内管、２２…上流側ピット、
２４…下流案内管、２６…下流側ピット、２８、３０、
１３０、１３１…耐火煉瓦、３２…流路、３４、１３
４、２３４、３３４…目地部、３６、１３６、２３６、
３３６…隅部10 ... Vacuum degassing apparatus, 12 ... Vacuum housing, 14 ... Vacuum degassing tank, 16, 116, 216, 316 ... Ascending pipe, 1
8 ... Down pipe, 20 ... Upstream guide pipe, 22 ... Upstream pit,
24 ... Downstream guide pipe, 26 ... Downstream pit, 28, 30,
130, 131 ... Refractory bricks, 32 ... Flow paths, 34, 13
4, 234, 334 ... Joints, 36, 136, 236,
336 ... Corner
───────────────────────────────────────────────────── フロントページの続き (72)発明者 佐々木 道人 神奈川県横浜市鶴見区末広町１丁目１番地 旭硝子株式会社内 (72)発明者 坂井 光美 千葉県船橋市北本町１丁目10番１号 旭硝 子株式会社内 (72)発明者 北村 礼 神奈川県横浜市神奈川区羽沢町1150番地 旭硝子株式会社内 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Michito Sasaki 1-1 Suehiro-cho, Tsurumi-ku, Yokohama-shi, Kanagawa Asahi Glass Co., Ltd. (72) Inventor Mitsumi Sakai Asahi Shota 1-10-1 Kitahonmachi, Funabashi City, Chiba Prefecture Child Co., Ltd. (72) Inventor Rei Kitamura 1150 Hazawa-machi, Kanagawa-ku, Yokohama-shi, Kanagawa Asahi Glass Co., Ltd.
Claims (4)
れた溶融ガラスの導管構造において、 前記導管は、前記流路の断面形状が所定の形状になるよ
うに複数の耐火煉瓦を組み付けて構成されるとともに、
これらの耐火煉瓦による目地部の外側部に目地部冷却手
段が配置されたことを特徴とする溶融ガラスの導管構
造。1. A conduit structure of molten glass in which a channel through which high-temperature molten glass flows is formed, wherein the conduit is constructed by assembling a plurality of refractory bricks so that the channel has a predetermined cross-sectional shape. As well as
A conduit structure for molten glass, characterized in that a joint portion cooling means is arranged outside the joint portion made of these refractory bricks.
れた溶融ガラスの導管構造において、 前記導管は、前記流路の断面形状が多角形形状になるよ
うに複数の耐火煉瓦を組み付けて構成されるとともに、
これらの耐火煉瓦による目地部が多角形形状流路の隅部
に形成され、該目地部の外側部に目地部冷却手段が配置
されたことを特徴とする溶融ガラスの導管構造。2. A conduit structure of molten glass in which a channel through which high-temperature molten glass flows is formed, wherein the conduit is constructed by assembling a plurality of refractory bricks so that the channel has a polygonal cross-sectional shape. As well as
A conduit structure for molten glass, characterized in that a joint portion made of these refractory bricks is formed at a corner portion of a polygonal flow path, and a joint portion cooling means is arranged outside the joint portion.
火煉瓦は、前記耐火煉瓦の両端において突出した耳部を
有するユニット耐火煉瓦であって、前記耳部は流路の外
側に突出しており、前記ユニット耐火煉瓦を前記耳部に
おいてそれぞれ当接させ、目地部が流路の中心から放射
状に伸びる様に形成されていることを特徴とする請求項
１又は２に記載の溶融ガラスの導管構造。3. A plurality of refractory bricks forming a flow passage cross section of the conduit are unit refractory bricks having protruding ears at both ends of the refractory brick, the ears protruding outside of the flow passage. The conduit for molten glass according to claim 1 or 2, wherein the unit refractory bricks are brought into contact with each other at the ears, and joints are formed to extend radially from the center of the flow path. Construction.
真空ハウジング内に収容された減圧脱泡槽と、前記減圧
脱泡槽に連通され脱泡処理前の溶融ガラスを減圧脱泡槽
に導入する上昇管と、前記減圧脱泡槽に連通され脱泡処
理後の溶融ガラスを減圧脱泡槽から導出する下降管と、
を有する溶融ガラスの減圧脱泡装置であって、 前記上昇管と前記下降管の少なくともいずれか一方が、
請求項１、２又は３のうちいずれか１項に記載された溶
融ガラスの導管構造を有することを特徴とする溶融ガラ
スの減圧脱泡装置。4. A vacuum housing which is sucked under reduced pressure, a vacuum degassing tank accommodated in the vacuum housing, and a molten glass which is in communication with the vacuum degassing tank and which has not been degassed is introduced into the vacuum degassing tank. An ascending pipe, and a descending pipe that is in communication with the vacuum degassing tank and leads out the degassed molten glass from the vacuum degassing tank,
A vacuum degassing apparatus for molten glass having, wherein at least one of the ascending pipe and the descending pipe,
A vacuum degassing apparatus for molten glass, comprising the conduit structure for molten glass according to any one of claims 1, 2 and 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001320286A JP4061880B2 (en) | 2001-10-18 | 2001-10-18 | Molten glass conduit structure and vacuum degassing apparatus for molten glass |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001320286A JP4061880B2 (en) | 2001-10-18 | 2001-10-18 | Molten glass conduit structure and vacuum degassing apparatus for molten glass |
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| Publication Number | Publication Date |
|---|---|
| JP2003128422A true JP2003128422A (en) | 2003-05-08 |
| JP4061880B2 JP4061880B2 (en) | 2008-03-19 |
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ID=19137699
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001320286A Expired - Fee Related JP4061880B2 (en) | 2001-10-18 | 2001-10-18 | Molten glass conduit structure and vacuum degassing apparatus for molten glass |
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| JP (1) | JP4061880B2 (en) |
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|---|---|---|---|---|
| JP5109086B2 (en) * | 2005-08-19 | 2012-12-26 | 旭硝子株式会社 | Molten glass conduit structure and vacuum degassing apparatus using the conduit structure |
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| WO2014174968A1 (en) | 2013-04-24 | 2014-10-30 | 旭硝子株式会社 | Molten glass conduit structure, and device and method using conduit structure |
| WO2016067801A1 (en) * | 2014-10-29 | 2016-05-06 | 日本電気硝子株式会社 | Glass manufacturing device and glass manufacturing method |
| WO2020045016A1 (en) * | 2018-08-30 | 2020-03-05 | 日本電気硝子株式会社 | Manufacturing device and manufacturing method for glass article |
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| JP5109086B2 (en) * | 2005-08-19 | 2012-12-26 | 旭硝子株式会社 | Molten glass conduit structure and vacuum degassing apparatus using the conduit structure |
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| WO2014174968A1 (en) | 2013-04-24 | 2014-10-30 | 旭硝子株式会社 | Molten glass conduit structure, and device and method using conduit structure |
| US9637407B2 (en) | 2013-04-24 | 2017-05-02 | Asahi Glass Company, Limited | Molten glass conduit structure, and device and method using conduit structure |
| WO2016067801A1 (en) * | 2014-10-29 | 2016-05-06 | 日本電気硝子株式会社 | Glass manufacturing device and glass manufacturing method |
| JP2016088754A (en) * | 2014-10-29 | 2016-05-23 | 日本電気硝子株式会社 | Glass manufacturing apparatus and glass manufacturing method |
| CN106795027A (en) * | 2014-10-29 | 2017-05-31 | 日本电气硝子株式会社 | Glass manufacturing apparatus and glass-making processes |
| CN106795027B (en) * | 2014-10-29 | 2021-02-19 | 日本电气硝子株式会社 | Glass manufacturing device and glass manufacturing method |
| WO2020045016A1 (en) * | 2018-08-30 | 2020-03-05 | 日本電気硝子株式会社 | Manufacturing device and manufacturing method for glass article |
| JP2020200217A (en) * | 2019-06-10 | 2020-12-17 | 日本電気硝子株式会社 | Manufacturing method of glass article |
| JP7222312B2 (en) | 2019-06-10 | 2023-02-15 | 日本電気硝子株式会社 | Method for manufacturing glass article |
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