WO2011059096A1 - 溶融ガラスの供給装置 - Google Patents
溶融ガラスの供給装置 Download PDFInfo
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- WO2011059096A1 WO2011059096A1 PCT/JP2010/070388 JP2010070388W WO2011059096A1 WO 2011059096 A1 WO2011059096 A1 WO 2011059096A1 JP 2010070388 W JP2010070388 W JP 2010070388W WO 2011059096 A1 WO2011059096 A1 WO 2011059096A1
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- molten glass
- fan
- supply pipe
- supply
- shaped portion
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- 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
- C03B5/26—Outlets, e.g. drains, siphons; Overflows, e.g. for supplying the float tank, tweels
- C03B5/265—Overflows; Lips; Tweels
- C03B5/267—Overflows; Lips; Tweels specially adapted for supplying the float tank
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B18/00—Shaping glass in contact with the surface of a liquid
- C03B18/02—Forming sheets
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B7/00—Distributors for the molten glass; Means for taking-off charges of molten glass; Producing the gob, e.g. controlling the gob shape, weight or delivery tact
- C03B7/01—Means for taking-off charges of molten glass
Definitions
- the present invention relates to an apparatus for supplying molten glass to a float bath of a float glass manufacturing apparatus.
- the float glass transports the molten glass manufactured in the molten glass production region to the molten glass supply unit of the float glass manufacturing apparatus, and supplies the molten glass transferred to the molten glass supply unit onto the molten tin of the float bath. This is formed into a ribbon-like glass.
- a bowl-shaped molten glass passage having an open top is generally used as this molten glass transfer device.
- Patent Document 1 supplies molten glass manufactured in a molten glass production region.
- An apparatus for transferring to a molten glass supply unit of a float glass manufacturing apparatus by a pipe is disclosed.
- this molten glass transfer device has a supply pipe 18 provided with a funnel-shaped spreading portion 17 on the downstream side, between a molten glass production region and a molten glass supply unit of a float glass production apparatus. It arrange
- the supplied molten glass is introduced into the float bath 22 by flowing down the supply channel 21 while adjusting the amount of molten glass by the slider 20.
- this molten glass transfer apparatus since the molten glass is transferred to the molten glass supply section by the supply pipe, it is possible to avoid the molten glass from coming into contact with the ambient air during the transfer. This prevents the radiation of heat from molten glass with a high molding temperature, such as a glass substrate for LCD, and also prevents evaporation of such components in glass compositions that contain easily evaporated components such as boric acid. By maintaining the molten glass in a very uniform state both in terms of temperature and composition and supplying it to the float bath, a high-quality glass product can be obtained.
- the molten glass is transferred to the molten glass supply section by the supply pipe, and as described above, contact with the surrounding air during the transfer of the molten glass and evaporation of the glass components can be prevented. Further, it is possible to obtain an excellent effect that the molten glass that has been further transferred can be supplied uniformly from the flat opening of the funnel-shaped spreading portion.
- the upstream end of the supply pipe it is necessary to connect the upstream end of the supply pipe to a relatively high position in the molten glass production region, that is, a position close to the surface layer portion of the molten glass in the molten glass production region.
- the surface layer portion of the molten glass in the molten glass production region generally has a higher mixing ratio of fine bubbles and foreign matters than the lower layer portion, and is often not good molten glass.
- the molten glass having a high mixing ratio of bubbles and the like is taken out from a relatively high position close to the surface layer portion of the molten glass production region, and the lower layer portion of the molten glass production region is excellent. It becomes difficult to transfer the molten glass to the molten glass supply unit of the float glass manufacturing apparatus. Furthermore, since the supply pipe is arranged horizontally, when molten glass mixed with bubbles or the like is taken out, the molten glass is directly transferred to the molten glass supply unit of the float glass manufacturing apparatus through the supply pipe and floated. Supplied on molten tin in bath. As a result, it becomes difficult to obtain a high-quality float glass substantially free of bubbles and the like.
- the molten glass flows in the horizontal direction and has a considerable viscosity. Therefore, when bubbles (gas) are generated in the flowing molten glass, It is difficult to guide the bubbles (gas) to the top end of the supply pipe so as to float on the surface of the molten glass and release the bubbles.
- the present invention has been made in view of the above, and by arranging the supply pipe with an upward slope toward the molten glass supply section, the upstream end of the supply pipe is positioned relatively lower in the molten glass production region. Connect and allow good molten glass in the lower layer part to be taken out, and bubbles mixed in the molten glass while the taken molten glass is transferred from the molten glass production area to the molten glass supply part by the supply pipe.
- the purpose of the present invention is to provide a molten glass supply device that can remove the bubbles by moving to the top end side of the supply pipe using the upward inclination of the supply pipe and supply good molten glass containing no foam to the float glass forming part And
- the present invention is an improvement of a molten glass supply device that transfers molten glass from a molten glass production region to a molten glass supply unit of a float glass manufacturing apparatus with a supply pipe, and is directed to an opening at a tip on the downstream side of the supply pipe.
- this invention provides the supply apparatus of the molten glass shown below.
- a teel for adjusting the amount of molten glass supplied to the bath, the opening of the supply pipe is disposed at a position lower than the molten glass level in the glass production region, and the supply pipe
- the fan-shaped portion has a fan-shaped portion extending in the left-right direction at a predetermined angle toward the opening, and the fan-shaped portion is gradually flattened and inclined upward toward the opening.
- the transfer in order to transfer the molten glass from the molten glass production region to the molten glass supply unit of the float glass manufacturing apparatus with the supply pipe, the transfer is performed in the same manner as the conventional molten glass supply apparatus that transfers the molten glass with the supply pipe.
- the molten glass inside can be kept in a sealed state without a free surface, so that the molten glass can be prevented from being cooled by contact with the surrounding air or volatilization of glass components that easily evaporate. And can be supplied in a uniform state.
- a fan-shaped portion is provided on the downstream side of the supply pipe in the left-right direction at a predetermined angle toward the opening at the tip, and the cross-sectional shape is gradually flattened, and the fan-shaped portion is directed upward toward the opening. Therefore, it is possible to connect the upstream end of the supply pipe to the relatively lower part of the molten glass production region by this amount of inclination, so that the mixing ratio of bubbles or the like in the lower layer portion from the molten glass production region is small. Molten glass can be taken out.
- the taken molten glass is transferred from the molten glass production region to the molten glass supply unit with the supply pipe, bubbles (gas) generated and mixed in the molten glass are lifted upward by buoyancy, Since the molten glass flowing through the upward inclined portion of the fan-shaped portion can be effectively discharged downstream, it is possible to prevent bubbles from staying in the fan-shaped portion.
- the viscosity of the molten glass supplied to the float bath is as high as about 10 3.5 to 10 4 dPa ⁇ s, so that resistance occurs when bubbles rise.
- the bubbles can be efficiently guided to the top end side of the fan-shaped portion by the sum of the buoyancy acting on the bubbles and the flow of the molten glass in the tilt direction, and these bubbles at the downstream end of the fan-shaped portion. Since it floats on the surface layer of the molten glass, it can be discharged before it is introduced into the float bath.
- the molten glass can be kept constant at a predetermined temperature by energizing and heating the supply pipe.
- FIG. 1 is a cross-sectional explanatory view of a molten glass supply apparatus according to an embodiment of the present invention
- FIG. 2 is a plan view of a supply pipe of the molten glass supply apparatus.
- the molten glass obtained in the molten glass production region 6 is transferred from the molten glass production region 6 to the molten glass supply unit 5 of the float glass forming apparatus 7 by the supply pipe 1, and the molten glass supply unit 5.
- the molten glass obtained by melting the glass raw material in the molten glass production region 6 is further clarified in the molten glass production region 6 and has a predetermined viscosity that is suitable for forming float glass. Then, it is taken out from the molten glass production region 6 by the supply pipe 1 and transferred to the molten glass supply unit 5. Then, the transferred molten glass is adjusted in the amount of molten glass with a wheel 8 provided in the molten glass supply unit 5 to form a flat and constant thickness molten glass layer of the lip tile (lip tile) of the molten glass supply unit 5. tile) 9, overflows the lip tile 9 and is supplied onto the molten tin 11 of the float bath 10.
- the molten glass production region 6 is a general term for the places where the melting of the glass raw material, the clarification and cooling of the molten glass obtained by melting, etc. are performed, but the molten glass is taken out as described above. It is a process after clarification and cooling are performed.
- the opening 16 of the supply pipe 1 is disposed at a position lower than the molten glass level (molten glass liquid level) 13 in the molten glass production region 6, and the supply pipe 1 is fan-shaped downstream thereof.
- the fan-shaped portion 3 has a flow path of the molten glass that extends in the left-right direction at a predetermined angle ⁇ 2 from the narrow upstream end toward the opening 16 at the tip (downstream end).
- the cross-sectional shape is gradually flattened toward the opening 16 and is inclined upward toward the opening 16 as shown in FIG.
- the molten glass in the molten glass production region 6 can be taken out from the position relatively lower than the molten glass level 13 by the supply pipe 1.
- the molten glass in the molten glass supply part 5 is a molten glass as shown in FIG. It is held at the same height as the molten glass level 13 in the production region 6.
- the molten glass of the surface layer close to the molten glass level 13 in the glass production region 6 contains more bubbles than the molten glass of the lower layer and is partially stable due to evaporation of some glass components. Not done. Therefore, when the molten glass is taken out from a position close to the surface layer as in the prior art, there arises a problem that bubbles or the like are apt to enter.
- the upstream side of the supply pipe 1 can be lowered
- the molten glass can be taken out from a position lower than the molten glass level 13 by a.
- the length of a is mainly determined by the depth of the molten glass (the height of the molten glass level 13) in the molten glass production region 6, but the size of a is usually preferably about 250 to 900 mm.
- the position of taking out the molten glass by the supply pipe 1 is within this range, it is possible to take out a good molten glass with less bubbles and avoiding the molten glass near the molten glass level 13. Furthermore, since the upstream side of the supply pipe 1 is lowered, a desired upward slope can be formed in the fan-shaped portion 3.
- the viscosity of the molten glass supplied to the float bath is as high as about 10 3.5 to 10 4 dPa ⁇ s, and therefore resistance when bubbles (gas) generated in the molten glass being transferred by the supply pipe 1 rise.
- the upward inclination can be formed in the fan-shaped portion 3, the buoyancy acting on the bubbles and the flow action in the inclination direction of the molten glass are added together, so the bubbles are efficiently moved to the top end side of the fan-shaped portion 3. It can be induced to float on the surface of the molten glass and be released.
- the supply pipe 1 in the present invention is formed by the fan-shaped portion 3 and an introduction pipe portion provided on the upstream side of the fan-shaped portion 3.
- the supply pipe 1 of this example is formed by connecting the fan-shaped portion 3 to a cylindrical tube 2 disposed in the horizontal direction. That is, the fan-shaped portion 3 is connected to the downstream end of the cylindrical tube 2 whose upstream end is connected to the molten glass production region 6, and the molten glass in the molten glass production region 6 is taken out by the cylindrical tube 2 and introduced into the fan-shaped portion 3. And it sends out to the molten glass supply part 5 from the opening part 16 of this fan-shaped part 3 (supply pipe 1).
- the cross-sectional shape of the upstream end of the fan-shaped portion 3 that is a connection portion with the cylindrical tube 2 is circular corresponding to the cylindrical tube 2, but the cross-sectional shape from there is flattened of the fan-shaped portion 3. Accordingly, the height h gradually decreases and changes to an elliptical shape, and the basic shape of the opening 16 is a rectangular shape whose long side is long in the horizontal direction or a horizontally long elliptical shape whose long axis extends in the horizontal direction.
- the opening having a rectangular cross-sectional shape is obtained by aligning the horizontal width (long side length) with the width of the molten glass supply unit 5 (the width in the direction perpendicular to the paper surface in FIG. 1), so that the molten glass is molten glass. This is preferable in that it can be sent to the supply unit 5 as a molten glass flow having the same width as the molten glass supply unit 5 and a substantially constant thickness in the horizontal direction.
- the length of the supply pipe 1 can be easily adjusted to the distance between the molten glass production region 6 and the molten glass supply part 5 by changing the length of the introduction pipe part.
- positioning an introductory pipe part in a substantially horizontal direction a molten glass can be taken out smoothly from the molten glass preparation area
- the cylindrical tube 2 is used as the introduction tube portion, and the cylindrical tube is disposed in the horizontal direction.
- the introduction tube portion is, for example, a tubular body having an elliptical or rectangular cross-sectional shape. Also good. Further, the introduction pipe portion is not necessarily arranged in the horizontal direction, and may be slightly inclined upward in the flow direction of the molten glass.
- the cross-sectional shape is an elliptical or rectangular introduction pipe part
- the cross-sectional shape of the upstream end of the fan-shaped part 3 connected to the introduction pipe part is also elliptical or rectangular according to the introduction pipe part. Become.
- the cross-sectional area of the opening 16 is substantially the same as the cross-sectional area of the upstream end that is a connection portion with the cylindrical tube 2.
- the ratio (M 1 / M 2) 0.7 to 1 the cross-sectional area of the cross-sectional area of the upstream end of the fan-shaped portion 3 (M 1) and a downstream end (opening 16) (M 2). 3 is preferred.
- (M 1 / M 2 ) is more preferably 0.8 to 1.2, further preferably 0.9 to 1.1, and particularly preferably 0.95 to 1.05.
- the molten glass supply portion 5 is always stably supplied from the opening portion 16 without stagnating the molten glass sent from the cylindrical tube 2. Can be sent to.
- the cross-sectional area of the fan-shaped portion 3 in the direction orthogonal to the molten glass transfer direction is substantially unchanged even when the cross-sectional shape gradually changes from, for example, a circular shape to a rectangular shape or an elliptical shape as described above. 1 and M 2 are the same.
- a horizontal flat portion 4 at the downstream end portion of the supply pipe 1 near the opening 16 of the fan-shaped portion 3. Since the fan-shaped part 3 has an upward inclination angle, the molten glass in the fan-shaped part 3 is sent from the opening 16 to the molten glass supply part 5 at substantially this inclination angle. Therefore, when the flat part 4 is not provided in the downstream end part of the fan-shaped part 3, after the molten glass is sent to the molten glass supply part 5 from the opening part 16 as an upward molten glass flow as it is, the opening part 16 is provided.
- the flat portion 4 has a certain length x, and the cross-sectional shape and the cross-sectional area thereof are the same in the molten glass transfer direction.
- the x varies depending on the size of the fan-shaped portion 3 and the inclination angle, and is not limited, but is preferably about 50 to 200 mm.
- the opening 16 of the supply pipe 1 preferably has the following relationship with the molten glass level 13.
- the height b from the upper surface of the opening 16 of the fan-shaped portion 3 to the molten glass level 13 is preferably 5 to 500 mm. Further, it is more preferably 5 to 450 mm. If b is smaller than 5 mm, the substrate that has become heterogeneous on the surface will be mixed into the mainstream of the molten glass, and if b exceeds about 500 mm, it is difficult to maintain the temperature of the molten glass in this part, which is not preferable. .
- the height c from the lower surface of the opening 16 (the upper surface of the lip tile 9) to the molten glass level 13 is preferably 100 to 600 mm, more preferably 350 to 550 mm. It is preferable for c to secure a minimum of 100 mm from the viewpoint of controlling the flow rate of molten glass by the wheel. If c exceeds 600 mm, the flow rate of molten glass by the wheel may be difficult to control.
- the upward inclination angle of the fan-shaped part 3 is defined by the inclination angle ⁇ 1 of the top end 14 of the fan-shaped part 3.
- the top end 14 of the fan-shaped portion 3 is the top of the molten glass flow path of the fan-shaped portion 3 where the center line 15 in the transfer direction of the molten glass is located in a plan view of the fan-shaped portion 3 as shown in FIG.
- the flat portion 4 is provided at the downstream end portion of the fan-shaped portion 3 as in this example, it is the top portion of the molten glass flow path in the region excluding the flat portion 4.
- the upward inclination angle of the fan-shaped part 3 is defined by the inclination angle ⁇ 1 of the top end 14 of the fan-shaped part 3 is that the height h of the fan-shaped part 3 is gradually decreased in the molten glass transfer direction. Therefore, the inclination angle of the fan-shaped portion 3 is different between the upper surface and the lower surface, and it is necessary to select some reference, and the upper surface that regulates the upper limit of the molten glass flow when the molten glass is sent to the molten glass supply unit 5 The role of is large.
- the inclination angle ⁇ 1 of the top end 14 of the fan-shaped portion 3 is preferably 2 to 30 degrees, more preferably 2 to 20 degrees, and further preferably 2 to 7 degrees with respect to the horizontal direction. If ⁇ 1 is smaller than 2 degrees, the position of the upstream end of the fan-shaped portion 3 (connection portion with the cylindrical tube 2) cannot be lowered sufficiently with respect to the molten glass supply portion 5 and the molten glass level 13, so Therefore, there is a possibility that it becomes impossible to take out a good molten glass by avoiding the molten glass in the surface layer portion, which is too much and is not stable in terms of components due to evaporation of the glass component.
- ⁇ 1 exceeds 30 degrees, the position for taking out the molten glass by the supply pipe 1 becomes too low, so that the molten glass cannot be taken out from an appropriate position in the molten glass production region, and the supply pipe 1 has a steep inclination. Therefore, it becomes difficult to smoothly transport the molten glass.
- the spreading angle ⁇ 2 in the left-right direction of the fan-shaped portion 3 is preferably 10 to 45 degrees.
- ⁇ 2 is smaller than 10 degrees, especially when the upstream end of the fan-shaped portion 3 is circular as in this example, the horizontal width of the upstream end is relatively small corresponding to the diameter of the cylindrical tube 2.
- the shape portion 3 (supply pipe 1) cannot be sufficiently expanded in the opening portion 16, and it becomes difficult to adapt the width of the opening portion 16 to the width of the molten glass supply portion 5.
- ⁇ 2 is more preferably 15 to 20 degrees.
- the material of the supply pipe 1 is preferably platinum or a platinum alloy (for example, platinum-rhodium alloy), or a material coated with platinum or a platinum alloy, which has high heat resistance and high corrosion resistance against molten glass.
- Platinum or platinum alloys have an excellent track record for this type of application, and are particularly suitable for molten glass having a high molding temperature, such as a glass substrate for LCD.
- Examples of the material coated with platinum or a platinum alloy include those obtained by coating the inner surface of a heat-resistant member such as a brick with platinum or a platinum alloy.
- the introduction pipe portion and / or the fan-shaped portion of the supply pipe 1 formed of these materials is heated uniformly by energization.
- the energization heating can be performed by directly energizing platinum or a platinum alloy, or when the material covered with platinum or the platinum alloy is a conductive material, energizing the material.
- the high-temperature molten glass taken out from the molten glass production region 6 to the supply pipe 1 is completely shielded from the ambient air until it is transferred to the molten glass supply unit 5, so that cooling due to contact with air can be prevented. At the same time, it is maintained at a substantially uniform temperature by energization heating of the supply pipe 1 and is transferred to the molten glass supply unit 5 at a temperature suitable for molding.
- the molten glass supply section 5 is provided with a twill 8 facing the opening 16 of the supply pipe 1 (fan-shaped section 3).
- the wheel 8 is made of a heat-resistant member having substantially the same width as the width of the opening 16 of the fan-shaped portion 3 and the width of the molten glass supply portion 5 (width in the direction perpendicular to the paper surface in FIG. 1). It is installed so as to be able to move up and down facing the opening 16, and the amount of molten glass supplied to the float bath 10 can be adjusted by moving up and down to change the height, and the molten glass sent to the molten glass supply unit 5.
- the glass is supplied to the float bath 10 as a thin molten glass layer having a constant thickness in the lateral direction. Moreover, supply of the molten glass to a float bath can be stopped by lowering to the lowest position.
- the gap d between the twill 8 and the opening 16 is preferably 0 to 30 mm, and more preferably 0 to 20 mm.
- the gap d being 0 mm means that the wheel 8 is provided as close as possible to the opening 16 of the fan-shaped portion 3.
- the gap d is preferably as small as possible. .
- the molten glass of the molten glass supply section 5 forms a free surface in the gap d, if the gap d is large, the molten glass is cooled by increasing the area in contact with the surrounding air, or some glass components are evaporated. Because it invites. It is not preferable that the gap d is larger than 30 mm because such a problem becomes remarkable.
- the twill 8 can be formed by covering a main part made of a heat-resistant member such as silica glass ceramic (fused silica) with platinum or a platinum alloy. And like the above-mentioned supply pipe 1, by supplying and heating this platinum or platinum alloy, the molten glass transferred to the molten glass supply part 5 is hold
- the current heating of the wheel 8 and the supply pipe 1 can be appropriately performed by a known method.
- FIG. 3 is a schematic longitudinal sectional view showing another embodiment of the fan-shaped portion 3 of the present invention.
- the fan-shaped part 3 has the same basic shape as the fan-shaped part 3 in FIG. 1 as a whole ascending and inclining toward the opening 16, but the flow path of the molten glass is melted as shown in FIG. It differs in that it is slightly convexly curved upward in the glass transfer direction, and naturally, the top end 14 of the fan-shaped portion 3 is similarly curved. Even if the fan-shaped part 3 is curved in this way, the same function can be obtained because the basic shape is the same as the fan-shaped part 3 of FIG.
- the inclination angle ⁇ 1 of the top end 14 of the fan-shaped portion 3 curved in this way is an angle with respect to the horizontal direction of the funnel-shaped spread portion 17 (that is, the horizontal direction of a straight line connecting both ends of the curved portion) Angle).
- the present invention can be used as a molten glass supply device of a float glass production apparatus, and is particularly suitable for supplying molten glass containing a glass component having a high molding temperature and being easily evaporated to a float bath.
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Abstract
Description
また、このように水平に配置された供給パイプでは、溶融ガラスが水平方向に流動しかつかなりの粘性を有しているため、流動中の溶融ガラスに泡(ガス)が発生した場合に、該泡(ガス)を供給パイプの天端に誘導して溶融ガラスの表層に浮上させて放出させることが困難となる。
(1)溶融ガラスをガラス作製領域からフロートバスの溶融ガラス供給部に移送するための供給パイプと、前記フロートバスの前記溶融ガラス供給部に前記供給パイプの開口部に対向して設けられ前記フロートバスへの溶融ガラス供給量を調節するためのツィール(tweel)とを備え、前記供給パイプの前記開口部は前記ガラス作製領域の溶融ガラスレベルよりも低い位置に配置され、前記供給パイプは先端の前記開口部に向かって所定の角度で左右方向に広がる扇形状部を有しており、該扇形状部は前記開口部に向って断面形状が漸次偏平化しかつ上方に傾斜していることを特徴とする溶融ガラスの供給装置。
(2)前記扇形状部の上流端の断面形状が円形または楕円形状であることを特徴とする上記1に記載の溶融ガラスの供給装置。
(3)前記扇形状部の下流端の断面形状が長方形状または楕円形状であることを特徴とする上記1または2に記載の溶融ガラスの供給装置。
(4)前記供給パイプが導入管部を備え、前記扇形状部の上流端が該導入管部に接続されていることを特徴とする上記1~3のいずれか1つに記載の溶融ガラスの供給装置。
(5)前記扇形状部の下流端部分に水平状の平坦部を設けることを特徴とする上記1~4のいずれか1つに記載の溶融ガラスの供給装置。
(6)前記扇形状部の上流端の断面積と下流端の断面積の比が0.7~1.3であることを特徴とする上記1~5のいずれか1つに記載の溶融ガラスの供給装置。
(7)前記供給パイプの前記開口部と前記ツィールとの間隙が0~30mmであることを特徴とする上記1~6のいずれか1つに記載の溶融ガラスの供給装置。
(8)前記扇形状部の天端の上り傾斜角度が、2~30度であることを特徴とする上記1~7のいずれか1つに記載の溶融ガラスの供給装置。
(9)前記扇形状部の左右方向の広がり角度が、10~45度であることを特徴とする上記1~8のいずれか1つに記載の溶融ガラスの供給装置。
(10)前記供給パイプが通電加熱によって一定の温度に保持されることを特徴とする上記1~9のいずれか1つに記載の溶融ガラスの供給装置。
(11)前記供給パイプが白金または白金合金からなる上記1~10のいずれか1つに記載の溶融ガラスの供給装置。
(12)前記供給パイプが白金または白金合金で被覆された材料からなる上記1~10のいずれか1つに記載の溶融ガラスの供給装置。
本出願は、2009年11月16日出願の日本特許出願(特願2009-261362)に基づくものであり、その内容はここに参照として取り込まれる。
2:円筒管
3:扇形状部
4:平坦部
5:溶融ガラス供給部
6:溶融ガラス作製領域
7:フロートガラス成形装置
8:ツィール
9:リップタイル
10、22:フロートバス
11:溶融スズ
12:フロートガラス
13:溶融ガラスレベル
14:天端
15:中心線
16:開口部
17:漏斗状広がり部
Claims (12)
- 溶融ガラスをガラス作製領域からフロートバスの溶融ガラス供給部に移送するための供給パイプと、
前記フロートバスの前記溶融ガラス供給部に前記供給パイプの開口部に対向して設けられ前記フロートバスへの溶融ガラス供給量を調節するためのツィールとを備え、
前記供給パイプの前記開口部は前記ガラス作製領域の溶融ガラスレベルよりも低い位置に配置され、
前記供給パイプは先端の前記開口部に向かって所定の角度で左右方向に広がる扇形状部を有しており、該扇形状部は前記開口部に向って断面形状が漸次偏平化しかつ上方に傾斜していることを特徴とする溶融ガラスの供給装置。 - 前記扇形状部の上流端の断面形状が円形または楕円形状であることを特徴とする請求項1に記載の溶融ガラスの供給装置。
- 前記扇形状部の下流端の断面形状が長方形状または楕円形状であることを特徴とする請求項1または2に記載の溶融ガラスの供給装置。
- 前記供給パイプが導入管部を備え、前記扇形状部の上流端が該導入管部に接続されていることを特徴とする請求項1~3のいずれか1項に記載の溶融ガラスの供給装置。
- 前記扇形状部の下流端部分に水平状の平坦部を設けることを特徴とする請求項1~4のいずれか1項に記載の溶融ガラスの供給装置。
- 前記扇形状部の上流端の断面積と下流端の断面積の比が0.7~1.3であることを特徴とする請求項1~5のいずれか1項に記載の溶融ガラスの供給装置。
- 前記供給パイプの前記開口部と前記ツィールとの間隙が0~30mmであることを特徴とする請求項1~6のいずれか1項に記載の溶融ガラスの供給装置。
- 前記扇形状部の天端の上り傾斜角度が、2~30度であることを特徴とする請求項1~7のいずれか1項に記載の溶融ガラスの供給装置。
- 前記扇形状部の左右方向の広がり角度が、10~45度であることを特徴とする請求項1~8のいずれか1項に記載の溶融ガラスの供給装置。
- 前記供給パイプが通電加熱によって一定の温度に保持されることを特徴とする請求項1~9のいずれか1項に記載の溶融ガラスの供給装置。
- 前記供給パイプが白金または白金合金からなることを特徴とする請求項1~10のいずれか1項に記載の溶融ガラスの供給装置。
- 前記供給パイプが白金または白金合金で被覆された材料からなることを特徴とする請求項1~10のいずれか1項に記載の溶融ガラスの供給装置。
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JP2011540579A JP5660046B2 (ja) | 2009-11-16 | 2010-11-16 | 溶融ガラスの供給装置 |
KR1020127012051A KR101215733B1 (ko) | 2009-11-16 | 2010-11-16 | 용융 유리의 공급 장치 |
CN201080051919.3A CN102612498B (zh) | 2009-11-16 | 2010-11-16 | 熔融玻璃的供给装置 |
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JP (1) | JP5660046B2 (ja) |
KR (1) | KR101215733B1 (ja) |
CN (1) | CN102612498B (ja) |
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WO (1) | WO2011059096A1 (ja) |
Cited By (5)
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WO2011136148A1 (ja) * | 2010-04-28 | 2011-11-03 | 旭硝子株式会社 | 溶融ガラス供給装置 |
CN105060681A (zh) * | 2015-08-06 | 2015-11-18 | 蚌埠玻璃工业设计研究院 | 一种流液道闸板密封装置 |
KR20160138924A (ko) | 2015-05-26 | 2016-12-06 | 아사히 가라스 가부시키가이샤 | 용융 유리 공급 장치 |
JP2017226574A (ja) * | 2016-06-22 | 2017-12-28 | 日本電気硝子株式会社 | ガラス板の製造方法およびガラス板製造装置 |
JP2021505520A (ja) * | 2017-12-08 | 2021-02-18 | コーニング インコーポレイテッド | ガラス製造装置およびガラス製造方法 |
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KR101583372B1 (ko) * | 2013-09-03 | 2016-01-07 | 주식회사 엘지화학 | 이질 유리 제거 장치 및 이를 포함하는 유리 제조 장치 |
KR101796818B1 (ko) * | 2014-07-23 | 2017-12-04 | 주식회사 엘지화학 | 유리 용융물 이송 장치 |
TWI530464B (zh) * | 2014-12-31 | 2016-04-21 | Eglass Taiwan Ltd | Molten glass guide |
JP2017014059A (ja) * | 2015-06-30 | 2017-01-19 | 旭硝子株式会社 | 溶融ガラス供給装置、ガラス板の製造装置、およびガラス板の製造方法 |
CN110981167B (zh) * | 2019-11-23 | 2022-09-27 | 石家庄旭新光电科技有限公司 | 倾角型双铂金通道玻璃液处理输送系统 |
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KR20120057662A (ko) | 2012-06-05 |
CN102612498B (zh) | 2015-01-07 |
TWI454436B (zh) | 2014-10-01 |
KR101215733B1 (ko) | 2012-12-26 |
CN102612498A (zh) | 2012-07-25 |
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