WO2011145526A1 - Dispositif de réduction de pression et de démoussage pour du verre fondu, procédé de fabrication de verre fondu, et procédé de fabrication de produit de verre - Google Patents

Dispositif de réduction de pression et de démoussage pour du verre fondu, procédé de fabrication de verre fondu, et procédé de fabrication de produit de verre Download PDF

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Publication number
WO2011145526A1
WO2011145526A1 PCT/JP2011/061076 JP2011061076W WO2011145526A1 WO 2011145526 A1 WO2011145526 A1 WO 2011145526A1 JP 2011061076 W JP2011061076 W JP 2011061076W WO 2011145526 A1 WO2011145526 A1 WO 2011145526A1
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WO
WIPO (PCT)
Prior art keywords
molten glass
vacuum degassing
tank
degassing tank
heating member
Prior art date
Application number
PCT/JP2011/061076
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English (en)
Japanese (ja)
Inventor
和雄 浜島
渉 三好
道人 佐々木
健一 増田
Original Assignee
旭硝子株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 旭硝子株式会社 filed Critical 旭硝子株式会社
Priority to JP2012515865A priority Critical patent/JP5737288B2/ja
Priority to CN201180023907.4A priority patent/CN102917988B/zh
Priority to KR1020127021345A priority patent/KR20130084215A/ko
Publication of WO2011145526A1 publication Critical patent/WO2011145526A1/fr

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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
    • C03B5/225—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
    • C03B25/00—Annealing glass products
    • 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
    • C03B5/235—Heating the glass
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
    • Y02P40/57—Improving the yield, e-g- reduction of reject rates

Definitions

  • the present invention relates to a vacuum degassing apparatus for molten glass, a molten glass manufacturing method using the apparatus, and a glass product manufacturing method.
  • a clarification process is performed to remove bubbles in the molten glass in order to improve the quality of the molded glass product before the molten glass melted in the melting tank is molded by a molding apparatus.
  • a method used in the clarification step there is a method of degassing molten glass using a vacuum degassing apparatus.
  • the vacuum degassing apparatus is used for a process in which molten glass in a melting tank is degassed under reduced pressure and continuously supplied to the next processing tank.
  • the vacuum degassing device has a vacuum housing that is vacuum-sucked to keep the inside in a vacuum state.
  • a vacuum degassing tank is accommodated in the vacuum housing so that its long axis is oriented in the horizontal direction.
  • an ascending pipe and a descending pipe oriented in the vertical direction are attached. A part of the ascending pipe and the descending pipe is accommodated in the decompression housing.
  • the riser pipe communicates with the vacuum degassing tank, and is an introduction means for raising the molten glass before the vacuum degassing from the melting tank and introducing it into the vacuum degassing tank.
  • the downcomer communicates with the vacuum degassing tank, and is a derivation means for lowering the molten glass after the vacuum degassing from the vacuum degassing tank and leading it to the next processing tank.
  • a heat insulation wall such as a heat insulation brick is provided around each of the decompression defoaming tank, the riser pipe, and the downfall pipe.
  • the viscosity of the molten glass decreases as the temperature rises, if the temperature of the molten glass in the vacuum degassing vessel is high, the bubbles in the molten glass can easily float on the liquid surface of the molten glass and defoam. Easy to do.
  • the inside of the vacuum degassing apparatus is heated with combustion gas burned by a burner disposed below each of the ascending pipe and the descending pipe. After heating the inside of the vacuum degassing apparatus, the burner is removed from below the riser pipe and the downfall pipe, and the molten glass is introduced into the vacuum degassing tank. By heating the inside of the vacuum degassing apparatus in advance, a temperature drop of the molten glass introduced into the vacuum degassing tank is prevented.
  • Patent Document 1 in order to suppress the temperature drop of the molten glass in the vacuum degassing tank, a heating device is installed around each of the riser pipe and the downfall pipe to heat the molten glass.
  • a heating device is insufficient to suppress the temperature drop of the molten glass.
  • FIG. 1 when the molten glass G in the vacuum degassing tank 14 is heated with a combustion gas such as a burner, the degree of vacuum in the vacuum degassing tank 14 is reduced by the exhaust gas, and it is difficult to degas the molten glass G. Therefore, it is not preferable.
  • the present invention has been made in view of the above-mentioned problems, and prevents the temperature of the molten glass in the vacuum degassing tank from decreasing, and can efficiently degas bubbles in the molten glass.
  • the purpose is to provide.
  • the present invention is a vacuum housing that is vacuumed to reduce the pressure inside, a vacuum degassing tank that is provided in the vacuum housing and performs vacuum degassing of molten glass, and is provided in communication with the vacuum degassing tank.
  • a riser pipe that sucks and raises the molten glass before vacuum degassing and introduces it into the vacuum degassing tank; and is provided in communication with the vacuum degassing tank;
  • a vacuum degassing apparatus for molten glass comprising a downcomer pipe that descends and leads out from above a liquid surface of the molten glass in the vacuum degassing tank, and an upper wall of the vacuum degassing tank It is the decompression degassing apparatus of the molten glass in which the electric heating apparatus is provided in the lower surface side.
  • the present invention includes a decompression housing that is vacuum-sucked to decompress the inside, a decompression deaeration tank that is provided in the decompression housing and performs decompression defoaming of the molten glass, and communicates with the decompression defoaming tank
  • a riser pipe that sucks and raises the molten glass before vacuum degassing and introduces it into the vacuum degassing tank; and is provided in communication with the vacuum degassing tank.
  • a vacuum degassing apparatus for molten glass comprising a downcomer pipe descending from the foam tank, and above the liquid level of the molten glass in the vacuum degassing tank, and in the vacuum degassing tank It is a molten glass vacuum degassing device provided with an electric heating device below the lower surface of the upper wall.
  • this invention is a manufacturing method of the molten glass including the process of defoaming a molten glass with the above-mentioned vacuum degassing apparatus of molten glass, and the melting process of melting a glass raw material before the said defoaming process. It is.
  • the present invention provides a molten glass manufacturing process according to the above-described molten glass manufacturing method, a molding process for molding the molten glass downstream of the molten glass manufacturing process, and a slow cooling of the glass after molding. And a cooling step.
  • a vacuum degassing apparatus for molten glass that prevents temperature drop of the molten glass in the vacuum degassing tank and can efficiently degas bubbles in the molten glass. Can be provided. Further, it is possible to provide a high-quality molten glass and glass product with few bubble defects.
  • FIG. 2 is an enlarged side sectional view of the electric heating device 50 of FIG. 1 and its surroundings.
  • FIG. 3 is a front sectional view taken along line AA ′ of FIG. 2.
  • FIG. 3 is an overhead cross-sectional view along the line BB ′ in FIG. 2.
  • FIG. 3 is a front sectional view taken along line CC ′ of FIG. 2.
  • FIG. 7A, FIG. 7B, and FIG. 7C are diagrams showing modifications of the cross-sectional shape of the heating member.
  • It is a flowchart which shows an example of the process of the manufacturing method of the molten glass which concerns on this invention. It is a flowchart which shows an example of the process of the manufacturing method of the glass product which concerns on this invention.
  • FIG. 1 is a schematic side sectional view of a vacuum degassing apparatus for molten glass (hereinafter referred to as a vacuum degassing apparatus of the present invention) according to an embodiment of the present invention.
  • a vacuum degassing apparatus 10 shown in FIG. 1 has a vacuum housing 12 in which the inside is held in a vacuum state.
  • the decompression housing 12 is made of metal, and is provided with a suction port 12c that is decompressed by vacuum suction.
  • a decompression deaeration tank 14 is accommodated in the decompression housing 12.
  • Suction holes 14 a and 14 b communicating with the decompression housing 12 are provided in the upper part of the decompression deaeration tank 14.
  • a vacuum pump not shown
  • the inside of the decompression deaeration tank 14 is maintained in a decompressed state.
  • an upper end of the rising pipe 16 and an upper end of the lowering pipe 18 that are oriented in the vertical direction are provided in communication.
  • the lower end of the ascending pipe 16 and the lower end of the descending pipe 18 are immersed in the molten glass G of the upstream pit 22 communicating with the melting tank 20 and the downstream pit 24 communicating with the next processing tank (not shown).
  • a part of the ascending pipe 16 and the descending pipe 18 is accommodated in the decompression housing 12.
  • a heat insulation wall 30 such as a heat insulation brick is provided around each of the vacuum degassing tank 14, the riser pipe 16, and the downfall pipe 18.
  • This heat insulation wall 30 is comprised with the heat insulating material which has air permeability, so that the vacuum suction of the vacuum degassing tank 14 may not be obstructed.
  • An electric heating device 50 is disposed above the liquid surface F of the molten glass G in the vacuum degassing tank 14 and below the lower surface 14c of the upper wall 14e of the vacuum degassing tank 14.
  • the electric heating device 50 includes a heating member 52 and heating electrodes 54 arranged at both ends of the heating member 52 in the longitudinal direction of the vacuum degassing tank 14.
  • a pair of heating electrodes 52 are formed at both ends of the heating member 52 in the longitudinal direction of the vacuum degassing tank 14, that is, above the rising pipe 16 side and the down pipe 18 side of the vacuum degassing tank 14.
  • the heating member extending in the longitudinal direction of the vacuum degassing tank 14 at a predetermined interval and provide an energizing electrode for each of them.
  • One end of the heating member 52 is connected to the upper surface of the heating member 52 and the other end is suspended from the upper wall by a hanging metal fitting 56 sandwiched between the upper walls of the vacuum degassing tank 14.
  • the heating member 52 and the heating electrode 54 are electrically connected, and the heating electrode 54 is provided through the vacuum degassing tank 14, the heat insulating wall 30, and the vacuum housing 12.
  • the end portion of the heating electrode 54 that goes out of the decompression housing 12 is electrically connected to an external power source (not shown), and the heating member 52 is energized and heated by the external power source.
  • the heating member 52 in the vacuum degassing tank 14 dissipates heat toward the periphery when energized, the molten glass G in the vacuum degassing tank 14 is heated. As a result, the temperature of the heated molten glass G rises and the viscosity decreases, so that the bubbles in the molten glass G can be easily defoamed.
  • FIG. 2 is an enlarged side cross-sectional view of the electric heating device 50 of FIG. 1 and its periphery
  • FIG. 3 is a front cross-sectional view taken along the line AA ′ of FIG.
  • the heating member 52 is provided over the entire area facing the liquid surface F of the molten glass G in the vacuum degassing vessel 14. Thereby, the whole molten glass G in the vacuum degassing tank 14 is heated without any spots, and the molten glass G can be easily defoamed in the entire area, and the molten glass G containing bubbles is a treatment tank after the vacuum degassing apparatus. Can be prevented from flowing out. As shown in FIG.
  • the cross-sectional shape of the heating member 52 viewed from the longitudinal direction of the vacuum degassing tank 14 has an upwardly convex arc shape.
  • the strength of the heating member is increased and there is no risk of bending due to its own weight even in a high temperature environment.
  • the temperature of the molten glass G in the vacuum degassing tank 14 is likely to drop through the side wall 14d of the vacuum degassing tank 14, the temperature distribution in the width direction of the vacuum degassing tank 14 of the molten glass G is High and end tends to be low.
  • the cross-sectional shape of the heating member is convex upward, the molten glass G at the end can be easily heated, and the molten glass G at the center is difficult to heat. As a result, the temperature distribution in the width direction of the molten glass G in the vacuum degassing tank 14 becomes uniform, and the molten glass G is heated without unevenness throughout the entire area, and can be easily degassed.
  • the end in the width direction of the heating member 52 is shaped to be outside of the inside of the vacuum degassing tank 14, and on the side wall of the vacuum degassing tank corresponding to the end. By providing a discharge port (not shown), the volatilized material from the molten glass G adhering to the lower surface of the heating member 52 can be discharged out of the vacuum degassing tank 14 along the lower surface.
  • FIG. 4 is an overhead cross-sectional view along the line BB ′ in FIG.
  • a reinforcing rib 58 is formed on the surface of the heating member 52.
  • the strength of the heating member 52 is increased, and bending due to the weight of the heating member 52 can be suppressed.
  • the heating member 52 can be made thinner and lighter.
  • An opening 62 is formed in the heating member 52. Furthermore, by providing the suction holes 14 a and 14 b that can be seen through above the opening 62, it is possible to observe the state of the molten glass G in the vacuum degassing tank 14 through the opening 62 from above the heating member 52.
  • the inside of the vacuum degassing tank 14 can be easily depressurized through the opening 62 and the suction holes 14a and 14b, and the bubbles in the molten glass G can be easily degassed. Thereby, the inside of the vacuum degassing tank 14 can be easily depressurized, and the molten glass G can be easily degassed.
  • the thickness of the heating member 52 on both sides of the opening 62 is made thicker than the thickness of the heating member 52 in which the opening 62 is not formed in order to suppress overheating.
  • the heating member 52 on both sides of the opening 62 is a portion M surrounded by a broken line in FIG. 4, and refers to the heating member 52 from the edge of the opening 62 to the edge in the width direction of the heating member 52. Point to.
  • the heating member 52A in the heating member 52 in which the opening 62 is not formed (hereinafter referred to as the heating member 52A), the cross-sectional area in the longitudinal direction of the vacuum degassing tank 14 of the heating member 52A is Sa. .
  • FIG. 5 is a front sectional view taken along the line CC ′ of FIG.
  • the cross-sectional area of the heating member 52B in the longitudinal direction of the vacuum degassing tank 14 is Sb.
  • Sb is the sum of the cross-sectional areas of the left and right heating members 52 shown.
  • the heating members 52A and 52B When the same thickness of current is passed through the heating members 52A and 52B under the above-described conditions for the plate thickness and the cross-sectional area of the heating members A and B, the current density in the cross-sectional area Sb of the heating member 52B is It becomes higher than the current density in the cross-sectional area Sa of the member 52A. Therefore, the heating member 52B generates heat more than the heating member 52A. That is, the heating member 52B is more easily deteriorated than the heating member A because the heat load is larger.
  • the above problem can be solved by increasing the thickness of the heating member B so that the ratio Sb / Sa between Sa and Sb is within a predetermined range.
  • the thickness of the opening 62 is increased and the Sb / Sa is 0.8 to 1.5, preferably 0.
  • the plate thickness of the heating member B is increased so as to be 9 to 1.3.
  • FIG. 6 is a side sectional view of the joint portion 64 between the heating members 52.
  • the heating member 52 in the embodiment includes a plurality of heating members 52, and the side cross-sectional shape of the joint portion between the heating members 52 is an inverted Y shape.
  • the heating member 52 is formed by joining a plurality of heating members 52, the large-sized heating member 52 can be easily manufactured and can be used for a large-sized vacuum degassing tank.
  • the heating member 52 Since the temperature of the heating member 52 rises over a wide range from the normal temperature before the steady operation to the high temperature during the steady operation, the heating member 52 thermally expands as the temperature rises.
  • the shape of the joining portion 64 of the heating member 52 is an inverted T shape, there is no place for expansion of the thermally expanded heating member 52, and the heating member 52 is damaged. There is a fear. Therefore, if the shape of the joint portion 64 is an inverted Y shape having a gap in the lower part, even if the heating member 52 is thermally expanded, the expansion is contained in the gap, so that the heating member 52 may be damaged. Absent.
  • One end of the hanging metal fitting 56 in the embodiment is connected to the upper end of the joint portion 64, and the other end is fixed to the upper wall of the vacuum degassing tank 14.
  • the hanging metal fitting 56 By connecting the hanging metal fitting 56 to the upper end of the joint portion 64 of the heating member 52, the bending of the heating member 52 can be suppressed. Further, the heating member 52 is thermally expanded in the longitudinal direction under a high temperature environment, but the thermal expansion can be suppressed by connecting the hanging metal fitting 56 fixed to the upper wall of the vacuum degassing tank 14. .
  • the electric heating device 50 is preferably made of platinum or a platinum alloy because it requires corrosion resistance against volatilized substances from the molten glass G and high-temperature resistance in the vacuum degassing vessel 14, and platinum rhodium (Pt / Rh) is more preferable.
  • platinum rhodium Pt / Rh
  • the vacuum degassing apparatus of the molten glass in this invention was demonstrated in detail, this invention is not limited to the said embodiment, You may perform various improvement and change in the range which does not deviate from the summary of this invention. Of course.
  • the temperature of the molten glass in the vacuum degassing tank is determined according to the physical property value of the molten glass G and the quality of the glass product.
  • the shape of the vacuum degassing tank, the riser pipe, and the downcomer pipe in the present invention is not particularly limited as long as it is at least a cylindrical pipe, and the cross-sectional shape can be circular or square.
  • the material of at least a portion in contact with the molten glass of the vacuum degassing tank, the rising pipe and the descending pipe is formed of a refractory furnace material having corrosion resistance to the molten glass, for example, electroformed brick.
  • the heating member in the present invention is preferably provided over the entire area facing the liquid surface F of the molten glass G in the vacuum degassing tank, but the liquid surface F of the molten glass G in the vacuum degassing tank. It does not need to be provided over the whole area which opposes.
  • the former configuration is preferable because it is easy to make the entire surface of the molten glass uniform in this configuration.
  • the size in the longitudinal direction and the size in the width direction of the heating member at this time are the same as the respective sizes of the vacuum degassing tank.
  • the length La in the longitudinal direction in the direction of arrow X in FIG.
  • the plate thickness of the heating member is preferably 6 mm or less, more preferably 3 mm or less, and even more preferably 1.5 mm or less, for processing and economical reasons. For reasons of processing and strength, it is preferably 0.6 mm or more, more preferably 0.8 mm or more.
  • the cross-sectional shape seen from the longitudinal direction of the vacuum degassing tank of the heating member in the present invention may be an upwardly convex shape or a flat plate shape.
  • the cross-sectional shape of the member is preferably an upwardly convex shape.
  • the cross-sectional shape seen from the longitudinal direction of the vacuum degassing tank of the heating member in the present invention is not limited to the upwardly convex arc shape as shown in FIG.
  • FIG. 7 shows a modification of the cross-sectional shape of the heating member.
  • (A) an inverted V shape, (B) a radial shape, and (C) an inverted trapezoidal shape are exemplified as the cross-sectional shape of the heating member other than the upwardly convex arc shape.
  • the rib may be formed in the surface of the heating member in this invention, it does not need to be formed, It is preferable that the rib is formed. This is because the strength of the heating member can be increased.
  • the opening 62 may or may not be formed, but it is preferably formed. This is because the state of the molten glass in the vacuum degassing tank can be observed through the opening 62, and the pressure in the vacuum degassing tank can be easily reduced.
  • the size of the radius ⁇ of the opening 62 is preferably 5 mm to 300 mm.
  • the heating member in the present invention may be composed of a single member or a plurality of members.
  • the heating member is preferably composed of a plurality of heating members.
  • the size of the gap width Wb is preferably 5 mm to 50 mm
  • the size of the width Wc of the joint surface is preferably 5 mm to 50 mm
  • the height of the gap is preferably 10 mm to 100 mm
  • the size of the pitch P is preferably 200 mm to 2000 mm.
  • the electric heating apparatus of this invention should just be provided above the liquid level of the molten glass in a vacuum degassing tank, and the lower surface side of the upper wall 14e of the said vacuum degassing tank, and was mentioned above. It is not limited to the aspect arrange
  • the electric heating device may be formed on the lower surface of the upper wall of the vacuum degassing tank, and the heating member may be formed on the lower surface of the upper wall of the vacuum degassing tank.
  • a heater may be installed as a heating member on the lower surface of the upper wall of the vacuum degassing tank.
  • FIG. 8 is a flowchart of one embodiment of the method for producing molten glass of the present invention.
  • the method for producing molten glass according to the present invention is characterized by using the above-mentioned vacuum degassing apparatus for molten glass according to the present invention.
  • the melting step S1 in which the molten glass is melted by the melting means (melting tank) in the previous stage of the vacuum degassing device described above to produce the molten glass, and the molten glass is vacuum degassed by the vacuum glass degassing device described above.
  • the electric heating device provided on the lower surface side of the upper wall of the vacuum degassing tank or the lower surface of the upper wall of the vacuum defoaming tank is energized and heated to prevent the temperature of the molten glass from lowering. Then, the molten glass is maintained and controlled at a predetermined temperature.
  • the manufacturing method of the molten glass of this invention is a range of a well-known technique except using the vacuum degassing apparatus of the molten glass mentioned above.
  • the melting means throws a glass raw material adjusted so as to have a desired composition into a melting tank, and at a predetermined temperature according to the type of glass, for example, in the case of soda lime glass for buildings and vehicles, about
  • the glass raw material is melted by heating to 1400 to 1600 ° C. to obtain a molten glass.
  • FIG. 9 is a flowchart of one embodiment of the glass product manufacturing method of the present invention.
  • the glass product manufacturing method of the present invention is characterized by using the above-described molten glass manufacturing method.
  • the glass product manufacturing method of the present invention includes, as an example, a molten glass manufacturing process K1 by the above-described molten glass manufacturing method, and a molding process K2 for forming the molten glass downstream of the above-described molten glass manufacturing process K1.
  • the slow cooling process K3 which cools a molten glass in the subsequent process, the cutting process K4 which cut
  • an electric heating device provided on the lower surface side of the upper wall of the vacuum defoaming tank or the lower surface of the upper wall of the vacuum degassing tank is energized and heated to prevent a temperature drop of the molten glass.
  • the molten glass is maintained and controlled at a predetermined temperature.
  • the manufacturing method of the glass product of the present invention is within the range of publicly known technology except that the manufacturing method of the molten glass described above is used.
  • examples of the molding process include a float method, a fusion method, and a download method.
  • the forming means using the float bath for the float process is preferable because a high-quality glass plate having a wide range of thickness from a thin glass plate to a thick glass plate can be produced in large quantities.
  • the slow cooling step is generally performed by a slow cooling furnace equipped with a mechanism for gradually lowering the temperature of the glass after forming.
  • the mechanism for gradually lowering the temperature gradually cools the glass after being formed by supplying a heat amount whose output is controlled by a combustion gas or an electric heater to a required position in the furnace. Thereby, the residual stress inherent in the glass after forming can be eliminated.
  • a cutting step used as necessary and other post-steps are also shown.
  • the vacuum degassing apparatus for molten glass of the present invention can produce a molten glass with few bubbles, and is therefore useful for a production apparatus for high-quality glass products with few bubble defects.

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  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Glass Melting And Manufacturing (AREA)

Abstract

La présente invention concerne : un dispositif de réduction de pression et de démoussage pour du verre fondu, capable, tout en prévenant une réduction de la température de verre fondu, d'éliminer efficacement la mousse dans le verre fondu contenu dans une cuve de réduction de pression et de démoussage ; un procédé de fabrication de verre fondu utilisant le dispositif ; et un procédé de fabrication de produit de verre. Un dispositif de réduction de pression et de démoussage pour du verre fondu comprend : un boîtier de réduction de pression, dont l'intérieur est évacué et réduit en pression ; une cuve de réduction de pression et de démoussage disposée dans le boîtier de réduction de pression et effectuant la réduction de pression et le démoussage de verre fondu ; un tuyau montant disposé de manière à communiquer avec la cuve de réduction de pression et de démoussage et aspirer et faire monter le verre fondu, qui n'a pas subi la réduction de pression et le démoussage, pour introduire le verre fondu dans la cuve de réduction de pression et de démoussage ; et un tuyau descendant disposé de manière à communiquer avec la cuve de réduction de pression et de démoussage et abaisser et délivrer le verre fondu, qui a subi la réduction de pression et le démoussage, à partir de la cuve de réduction de pression et de démoussage. Un dispositif de chauffage électrique est disposé à une position au-dessus de la surface du verre fondu située dans la cuve de réduction de pression et de démoussage, et au-dessous de la surface inférieure de la paroi supérieure de la cuve de réduction de pression et de démoussage.
PCT/JP2011/061076 2010-05-19 2011-05-13 Dispositif de réduction de pression et de démoussage pour du verre fondu, procédé de fabrication de verre fondu, et procédé de fabrication de produit de verre WO2011145526A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2012515865A JP5737288B2 (ja) 2010-05-19 2011-05-13 溶融ガラスの減圧脱泡装置、溶融ガラスの製造方法、およびガラス製品の製造方法
CN201180023907.4A CN102917988B (zh) 2010-05-19 2011-05-13 熔融玻璃的减压脱泡装置、熔融玻璃的制造方法及玻璃制品的制造方法
KR1020127021345A KR20130084215A (ko) 2010-05-19 2011-05-13 용융 유리의 감압 탈포 장치, 용융 유리의 제조 방법, 및 유리 제품의 제조 방법

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Application Number Priority Date Filing Date Title
JP2010115450 2010-05-19
JP2010-115450 2010-05-19

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WO2011145526A1 true WO2011145526A1 (fr) 2011-11-24

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JP (1) JP5737288B2 (fr)
KR (1) KR20130084215A (fr)
CN (1) CN102917988B (fr)
TW (1) TW201215576A (fr)
WO (1) WO2011145526A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013150912A1 (fr) * 2012-04-05 2013-10-10 ＡｖａｎＳｔｒａｔｅ株式会社 Procédé de production d'un substrat en verre et dispositif de production de substrat en verre
JP2013245134A (ja) * 2012-05-25 2013-12-09 Nippon Electric Glass Co Ltd 溶融ガラス用管状体及び溶融ガラス供給装置並びにパイプ部材
JP2014009126A (ja) * 2012-06-29 2014-01-20 Avanstrate Inc ガラス基板の製造方法及び製造装置
KR101622057B1 (ko) * 2012-09-27 2016-05-17 아반스트레이트 가부시키가이샤 글래스 기판의 제조 장치 및 글래스 기판의 제조 방법

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JP5731639B2 (ja) * 2012-04-05 2015-06-10 ＡｖａｎＳｔｒａｔｅ株式会社 ガラス基板の製造方法、ガラス基板製造装置
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JP2015147730A (ja) * 2012-04-05 2015-08-20 ＡｖａｎＳｔｒａｔｅ株式会社 ガラス基板の製造方法、ガラス基板製造装置
JP2013245134A (ja) * 2012-05-25 2013-12-09 Nippon Electric Glass Co Ltd 溶融ガラス用管状体及び溶融ガラス供給装置並びにパイプ部材
JP2014009126A (ja) * 2012-06-29 2014-01-20 Avanstrate Inc ガラス基板の製造方法及び製造装置
KR101622057B1 (ko) * 2012-09-27 2016-05-17 아반스트레이트 가부시키가이샤 글래스 기판의 제조 장치 및 글래스 기판의 제조 방법

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CN102917988B (zh) 2015-07-15

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