WO2023234083A1 - Dispositif de fabrication d'article en verre et procédé de fabrication d'article en verre - Google Patents

Dispositif de fabrication d'article en verre et procédé de fabrication d'article en verre Download PDF

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Publication number
WO2023234083A1
WO2023234083A1 PCT/JP2023/018830 JP2023018830W WO2023234083A1 WO 2023234083 A1 WO2023234083 A1 WO 2023234083A1 JP 2023018830 W JP2023018830 W JP 2023018830W WO 2023234083 A1 WO2023234083 A1 WO 2023234083A1
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WO
WIPO (PCT)
Prior art keywords
pot
glass
glass article
manufacturing
molten glass
Prior art date
Application number
PCT/JP2023/018830
Other languages
English (en)
Japanese (ja)
Inventor
裕之 板津
Original Assignee
日本電気硝子株式会社
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 日本電気硝子株式会社 filed Critical 日本電気硝子株式会社
Publication of WO2023234083A1 publication Critical patent/WO2023234083A1/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
    • C03B5/167—Means for preventing damage to equipment, e.g. by molten glass, hot gases, batches
    • 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
    • C03B5/18—Stirring devices; Homogenisation
    • C03B5/187—Stirring devices; Homogenisation with moving elements
    • 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
    • C03B5/435—Heating arrangements 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

Definitions

  • the present invention relates to a glass article manufacturing apparatus and a glass article manufacturing method equipped with a transfer device for conveying molten glass.
  • This transfer device may include a cylindrical pot having a bottom wall at its lower end.
  • Patent Document 1 discloses a detailed configuration around this type of pot. That is, in the same document, an upstream pipe and a downstream pipe through which molten glass flows in and out are connected to the upper and lower parts of the side wall of a pot (in the same document, a stirring tank), respectively, and a pipe is connected to the outer circumference of the bottom wall of the pot. , a configuration in which a flange portion (electrode in the same document) is attached is illustrated.
  • the same document also discloses that the flange portion is equipped with a cooling mechanism (for example, water cooling or air cooling) (see paragraph [0044] of the same document).
  • a cooling mechanism for example, water cooling or air cooling
  • the terminal generates heat while heating the molten glass by passing an electric current through the terminal of the flange portion.
  • a cooling mechanism provided in the flange portion.
  • cooling mechanism is not illustrated in FIGS. 2 and 3 of the same document, if a cooling mechanism such as air cooling or water cooling is added to the flange portion (19) illustrated in these figures, , the separation distance between the cooling mechanism and the downstream pipe (13) becomes shorter.
  • an object of the present invention is to prevent the molten glass flowing in the connecting pipe connected to the lower part of the side wall of the pot, which is a component of the transfer device, from cooling
  • the purpose is to prevent devitrification of molten glass by preventing an excessive temperature drop due to the structure.
  • a first aspect of the present invention devised to solve the above problems is a glass article manufacturing apparatus equipped with a transfer device for transferring molten glass, the transfer device having a bottom wall at its lower end.
  • a cylindrical pot having a section, and a connecting pipe connected to a lower part of a side wall of the pot to allow molten glass to flow out of the pot or to flow into the pot, the lower end side of the pot It is characterized in that it has a flange portion, a current supply terminal and a cooling structure are disposed in the flange portion, and the shortest distance between the connecting pipe and the cooling structure is 10 mm or more.
  • the shortest distance between the connecting pipe connected to the lower part of the side wall portion of the pot and the cooling structure disposed on the flange portion on the lower end side of the pot is 10 mm or more, so that the connecting pipe and the cooling structure are sufficiently spaced apart from each other. Therefore, the molten glass flowing within the connecting pipe is less affected by the cooling structure, and the temperature does not drop excessively, so that devitrification of the molten glass is suppressed.
  • the connecting pipe connected to the lower part of the side wall of the pot is a pipe that has an outflow part that flows out of the pot from inside the pot, and a pipe that has an inflow part that flows the molten glass into the pot. Although there are pipes that are connected to the connector, in this configuration, any of these pipes may be used.
  • the shortest distance between the pot and the cooling structure may be 10 mm or more.
  • the pot and the cooling structure are also sufficiently spaced apart, so that devitrification of the molten glass in the stagnant layer within the pot, particularly in the lower part of the pot, is suppressed. Therefore, when the molten glass in the stagnant layer unintentionally flows out of the pot, it is possible to avoid as much as possible the problem of generating a large number of defects.
  • a second aspect of the present invention devised to solve the above problems is a glass article manufacturing apparatus equipped with a transfer device for transferring molten glass, the transfer device having a bottom wall at its lower end. a cylindrical pot having a lower end portion, and a connecting pipe connected to a lower part of a side wall portion of the pot to allow molten glass to flow out of the pot or flow into the pot;
  • the present invention is characterized in that it has an extending portion extending downward from the flange portion, a flange portion is attached to the extending portion, and a current supply terminal and a cooling structure are disposed on the flange portion.
  • the flange portion on which the cooling structure is disposed is attached to the extension portion extending downward from the lower end of the pot, thereby increasing the shortest distance between the connecting pipe and the cooling structure. be able to. As a result, devitrification of the molten glass flowing inside the connecting pipe is suppressed in the same manner as in the case described above.
  • the extending portion is composed of a cylindrical extending cylindrical body, and the extending cylindrical body gradually expands downward. You can leave it there.
  • the diameter of the flange can be increased by attaching the flange to the expanded portion of the extending cylindrical body, and the cooling structure can be disposed on the flange having a large diameter.
  • the shortest distance between the pot and the cooling structure can be increased. This has the synergistic effect of suppressing the generation of devitrified foreign substances in the connecting pipe and suppressing the generation of devitrified foreign substances in the stagnant layer existing in the lower part of the pot, in the same way as in the case described above. can be obtained.
  • the cooling structure may be held on the upper surface of the flange portion.
  • the cooling structure may be incorporated inside the flange portion.
  • the cooling structure may be a tubular body having an annular shape in plan view and through which a cooling fluid flows.
  • the tubular body has an annular shape in plan view, a wide area of the flange portion can be cooled, and wear and tear of the terminal can be more reliably prevented.
  • the pot is a stirring pot equipped with a stirrer, and the connecting pipe is connected to a lower part of a side wall of the pot and extends inside the pot. It may also be a pipe through which molten glass flows out.
  • a third aspect of the present invention devised to solve the above problems is a method for manufacturing a glass article, which comprises a manufacturing apparatus having any of the configurations of (1) to (8) above. It is characterized in that it is used to produce glass articles.
  • the molten glass flowing in the connecting pipe connected to the lower part of the side wall of the pot which is a component of the transfer device, is prevented from being excessively heated by the cooling structure disposed at the flange at the lower end of the pot. This prevents the temperature from decreasing and devitrification of the molten glass is suppressed.
  • FIG. 1 is a schematic front view showing the overall configuration of a glass article manufacturing apparatus according to an embodiment of the present invention.
  • 1 is a longitudinal sectional front view showing a first example of a characteristic configuration of a glass article manufacturing apparatus according to an embodiment of the present invention.
  • 1 is a perspective view showing a main part of a first example of a characteristic configuration of a glass article manufacturing apparatus according to an embodiment of the present invention.
  • FIG. 3 is a longitudinal sectional front view showing a second example of the characteristic configuration of the glass article manufacturing apparatus according to the embodiment of the present invention.
  • FIG. 2 is a longitudinal sectional front view showing a third example of the characteristic configuration of the glass article manufacturing apparatus according to the embodiment of the present invention.
  • FIG. 1 illustrates an apparatus for manufacturing a glass article according to the present invention.
  • this manufacturing apparatus 1 can be roughly divided into a melting furnace 2 that is disposed at the upstream end and heats glass raw materials to produce molten glass Gm, and a melting furnace 2 that generates molten glass Gm flowing out from the melting furnace 2.
  • It includes a transfer device 3 that transfers toward the downstream side, and a forming device 4 that forms a glass ribbon Gr using molten glass Gm supplied from the transfer device 3.
  • the glass ribbon Gr formed by the forming device 4 is then cut in the width direction by a cutting device (not shown) to become a glass original plate.
  • This glass original plate is further subjected to various treatments, such as a step of cutting it into a predetermined size, as necessary.
  • both ends of the width direction are cut
  • the transfer device 3 includes, in order from the upstream side, a clarification pipe 5 forming a clarification tank, a stirring pot 6 forming a stirring tank, and a conditioning pot 7 forming a conditioning tank.
  • the outflow section 2b of the melting furnace 2 communicates with the inflow section 5a of the clarifier tube 5 via the first pipe 8.
  • the outflow section 5b of the clarifier tube 5 communicates with the inflow section 6a of the stirring pot 6 via the second pipe 9.
  • the outflow section 6b of the stirring pot 6 communicates with the inflow section 7a of the conditioning pot 7 via a third pipe (cooling pipe) 10.
  • the refining tube 5 is used to perform refining treatment on the molten glass Gm produced in the melting furnace 2.
  • the stirring pot 6 is used to stir and homogenize the molten glass Gm that has been subjected to the clarification process.
  • the third pipe 10 is used to adjust the temperature, viscosity, etc. of the molten glass Gm that has been subjected to the homogenization process.
  • the condition adjustment pot 7 is used to further adjust the temperature or viscosity of the molten glass Gm whose temperature or viscosity has been adjusted, or to adjust the flow rate. Note that a plurality of stirring pots 6 may be arranged on the transfer path of the transfer device 3.
  • the molding device 4 includes a molded body 11 that causes the molten glass Gm to flow down by an overflow down-draw method to form it into a strip shape, and a large-diameter introduction pipe 12 that guides the molten glass Gm to the molded body 11.
  • Molten glass Gm is supplied to the introduction pipe 12 from the conditioning pot 7 of the transfer device 3 via a small diameter pipe 13.
  • the introduction pipe 12 may be included in the transfer device 3. In this case, the introduction pipe 12 becomes a component at the downstream end of the transfer path of the transfer device 3.
  • the glass ribbon Gr formed into a band shape is supplied to an annealing process and a cutting process, and a glass original plate of a desired size is cut out.
  • a glass plate obtained from this original glass plate has a thickness of, for example, 0.01 to 2 mm, and is used as a glass substrate or cover glass for displays such as liquid crystal displays and organic EL displays.
  • the molding device 4 may be one that executes another down-draw method such as the slot down-draw method, or may be one that executes a method other than the down-draw method, for example, a float method.
  • the molten glass is made of silicate glass or silica glass, preferably borosilicate glass, soda lime glass, or aluminosilicate glass (glass for chemical strengthening), and most preferably made of alkali-free glass.
  • alkali-free glass refers to glass that does not substantially contain alkali components (alkali metal oxides), and specifically, glass in which the weight ratio of alkali components is 3000 ppm or less. be.
  • the weight ratio of the alkali component in the present invention is preferably 1000 ppm or less, more preferably 500 ppm or less, and most preferably 300 ppm or less.
  • This characteristic configuration lies in the configuration around the stirring pot 6.
  • first to fifth examples of this characteristic configuration will be described in detail based on FIGS. 2 to 7.
  • FIG. 2 is a schematic longitudinal sectional front view showing a first example of a characteristic configuration
  • FIG. 3 is a perspective view showing the main parts thereof.
  • the stirring pot 6 includes a cylindrical pot 14 having a bottom wall portion 14a at the lower end, and a stirrer (stirring blade) 15 inserted into the inside of the pot 14 to stir the molten glass Gm.
  • An upstream pipe (second pipe) 9 that causes molten glass Gm to flow into the pot 14 through the inflow portion 6a is connected to the upper portion of the side wall portion 14b of the pot 14.
  • the upstream pipe 9 has an inflow end side pipe section 9a connected to the inflow section 6a, and an upstream side pipe section 9b upstream from the inflow end side pipe section 9a.
  • an upper end flange portion 16 that protrudes toward the outer circumferential side over the entire length in the circumferential direction is attached integrally or separately.
  • a terminal 16a for energization that protrudes toward the outer circumference is attached integrally or separately.
  • the upper end of the pot 14 is covered with a lid 17, and a rotation shaft 15a of the stirrer 15 is inserted into an insertion hole 17a formed in the lid 17.
  • a downstream pipe (cooling pipe) 10 serving as a connecting pipe for flowing out the molten glass Gm in the pot 14 through the outflow portion 6b is connected to the lower part of the side wall portion 14b of the pot 14.
  • the downstream pipe 10 has an outflow end side pipe section 10a connected to the outflow section 6b, and a downstream side pipe section 10b on the downstream side thereof. Note that the plurality of arrows shown in FIG. 2 represent the general flow of the molten glass Gm.
  • An extending portion 18 extending downward from the bottom wall portion 14a of the pot 14 is provided on the lower end side of the pot 14.
  • the extending portion 18 is constituted by a cylindrical extending cylindrical body, and this extending cylindrical body 18 gradually expands downward (gradually expands in diameter).
  • a lower end flange portion 19 that protrudes toward the outer circumferential side over the entire length in the circumferential direction is attached to the lower end portion of the extending cylindrical body 18, either integrally or separately.
  • a terminal 19a for energization that protrudes toward the outer circumference is attached integrally or separately. Therefore, the molten glass Gm in the pot 14 is heated by passing current through the pot 14 from the terminal 19a on the lower end side and the terminal 16a on the upper end side of the pot 14.
  • a cooling structure 20 is held on the upper surface of the lower end flange portion 19 to prevent wear and tear of the terminal 19a.
  • the cooling structure 20 is composed of a cooling pipe that is annular in plan view, as shown in FIG. Inside the cooling pipe 20, a cooling fluid made of a liquid such as water or a gas such as air flows. Specifically, the cooling fluid introduced into the cooling pipe 20 from the supply source 21 that supplies the cooling fluid cools the lower end flange portion 19 and the terminal 19a, and then is recovered by the recovery section 22. In this case, if the cooling fluid collected by the collection unit 22 is cooled again and returned to the supply source 21, the cooling fluid can be circulated.
  • the cooling pipe 20 is in contact with the upper surface 19b of the lower end flange portion 19 in order to prevent damage due to the load of the pot 14 and the molten glass therein.
  • the cooling pipe 20 is not in contact with the terminal 19a in the illustrated example, it may be shaped so that it is in contact with the terminal 19a.
  • the pot 14, the upstream pipe 9, and the downstream pipe 10 can be made of platinum or a platinum alloy. Further, the upper end flange portion 16, the terminal 16a, the extending cylindrical body 18, the lower end flange portion 19, the terminal 19a, and the cooling pipe 20 can be formed of platinum, reinforced platinum, copper, nickel, stainless steel, or the like.
  • a discharge port 14x is formed in the bottom wall portion 14a of the pot 14, and a small diameter cylindrical body (drain) 26 extending downward is connected to the discharge port 14x. While the molten glass Gm is being transferred by the transfer device 3, the drain 26 is blocked by the solidified glass Gx that has solidified within the drain 26.
  • the lower end flange portion 19 is attached to the lower end portion of the extending cylindrical body 18 extending downward from the bottom wall portion 14a of the pot 14, and the cooling pipe 20 is held in the lower end flange portion 19, so that the downstream pipe 10 (In particular, the first shortest distance L1 between the outflow end side pipe portion 10a) and the cooling pipe 20 can be increased.
  • This first shortest distance L1 is 10 mm or more, preferably 20 mm or more, more preferably 35 mm or more, and even more preferably 50 mm or more.
  • the upper limit is preferably 100 mm or less.
  • this second shortest distance L2 between the pot 14 and the cooling pipe 20 can be increased.
  • this second shortest distance L2 is also preferably 10 mm or more, more preferably 20 mm or more, and even more preferably 50 mm or more.
  • the upper limit is preferably 100 mm or less.
  • the lower end flange portion 19 protrudes toward the outer circumferential side along the circumferential direction, but similarly to the extending cylindrical body 18, it may gradually expand downward.
  • FIG. 4 is a schematic longitudinal sectional front view showing a second example of the characteristic configuration.
  • the difference between this second example and the previously described first example is that the extending cylindrical body 18 as an extending portion disposed on the lower end side of the pot 14 is The outer diameter of the extending cylindrical body 18 is larger than the outer diameter of the bottom wall 14a of the pot 14.
  • the outer diameter of the extending cylindrical body 18 is preferably 1.1 to 1.5 times the outer diameter of the bottom wall portion 14a of the pot 14.
  • the first shortest distance L1 between the cooling pipe 20 and the downstream pipe 10 and the second shortest distance L2 between the cooling pipe 20 and the pot 14 are the same as those described in the first example. Since the other configurations and effects are the same as those of the first example already described, the same reference numerals are given to the common components in FIG. 4, and the explanation thereof will be omitted.
  • FIG. 5 is a schematic longitudinal sectional front view showing a third example of the characteristic configuration.
  • this third example is different from the first example already described in that, on the lower end side of the pot 14, the bottom wall portion 14a of the pot 14 is extended to the outer circumferential side over the entire circumferential length. This is where the protruding lower end flange portion 19 is attached.
  • a further difference is that the connection position of the downstream pipe 10 to the pot 14 is raised. That is, in this third example, the distance in the vertical direction from the lower end flange portion 19 to the bottom wall portion 14a of the pot 14 is shorter (to zero or approximately zero) compared to the first and second examples described above. Therefore, the connection position of the downstream pipe 10 to the pot 14 is raised by the shortened distance.
  • the first shortest distance L1 between the cooling pipe 20 and the downstream pipe 10 and the second shortest distance L2 between the cooling pipe 20 and the pot 14 are the same as those explained in the first example. is the same as Since the other configurations and effects are the same as the first example described above (the main points of the effects are the same), the same reference numerals are given to the common components in FIG. 5, and their explanations are omitted. do.
  • This manufacturing method includes a melting process, a transfer process, a molding process, and a cutting process as main processes.
  • the melting process is a process of continuously producing molten glass Gm within the melting furnace 2.
  • the transfer process is a process of transferring the molten glass Gm flowing out from the melting furnace 2 toward the forming device 4.
  • the transfer process includes a clarification process using the clarifier tube 5, a stirring process (homogenization process) using the stirring pot 6 with the above-mentioned peripheral structure, and a conditioning process using the conditioning pot 7.
  • the forming process is a process of continuously forming a glass ribbon Gr from the molten glass Gm transferred in the transfer process by an overflow down-draw method.
  • the cutting process is a process in which the glass ribbon formed in the forming process is cut in the width direction at predetermined lengths to obtain a glass original plate.
  • the glass original plate is then subjected to various treatments such as cutting it into a predetermined size. In this way, a glass plate as a glass article is manufactured.
  • the embodiments of the present invention are not limited thereto, and may be provided without departing from the gist of the present invention. Various changes are possible.
  • the downstream pipe 10 through which the molten glass Gm in the pot 14 flows out is connected to the lower part of the side wall portion 14b of the pot 14.
  • the present invention can be similarly applied to the configuration of the pot 6 and its surroundings. That is, in the fourth example of the characteristic configuration of the manufacturing apparatus 1 shown in FIG. 6, an upstream pipe 9 is provided at the lower part of the side wall portion 14b of the pot 14 as a connecting pipe through which the molten glass Gm flows into the pot 14 through the inflow portion 6a. are connected.
  • the upstream pipe 9 has an inflow end side pipe section 9a connected to the inflow section 6a, and an upstream side pipe section 9b upstream from the inflow end side pipe section 9a.
  • a downstream pipe 10 is connected to the upper part of the side wall portion 14b of the pot 14, through which the molten glass Gm flows out from the inside of the pot 14 through the outflow portion 6b.
  • the molten glass Gm generally flows in accordance with the plurality of arrows shown in the figure.
  • the configuration below from the upstream pipe 9 around the stirring pot 6 shown in the figure is the same as the first example of the characteristic configuration described above. Therefore, according to the configuration here, the same effects as in the first example can be obtained. Note that it is also possible to apply the configuration of this fourth example to the second and third examples of the characteristic configurations described above.
  • the cooling pipe 20 as a cooling structure is held on the upper surface of the lower end flange portion 19, but as shown in FIG. It may also be a configuration. That is, in the fifth example of the characteristic configuration shown in FIG. 7, the thickness of the lower end flange portion 19 is made thicker than in the above-described first example, and the cooling pipe 20 is incorporated inside the lower end flange portion 19. In the illustrated example, three cooling pipes 20 are arranged side by side in the radial direction of the lower end flange portion 19, but the number of cooling pipes 20 may be four or more, or may be one. good.
  • a plurality of cooling pipes 20 may be arranged side by side in the thickness direction of the lower end flange portion 19.
  • the cooling pipe 20 is embedded inside the lower end flange part 19, but a hollow part is formed inside the lower end flange part 19, and a gap is interposed in the hollow part to insert the cooling pipe 20. May be placed.
  • the cooling pipe 20 since the cold air from the cooling pipe 20 is difficult to escape to the outside of the lower end flange portion 19, the cooling effect on the terminal 19a is increased, and wear and tear of the terminal 19a can be effectively prevented. It is possible to efficiently suppress the temperature drop when the molten glass Gm, which has been subjected to the stirring action in the downstream pipe 14, flows in the downstream pipe 10. Further, according to the fifth example, even when using gas instead of liquid as the cooling fluid, sufficient cooling capacity by the cooling pipe 20 can be ensured. Note that the configuration of this fifth example can also be applied to the second to fourth examples of the characteristic configurations described above.
  • the cooling pipe 20 through which the cooling fluid flows is used as the cooling structure.
  • Other cooling units such as a plurality of cooling boxes in which fluid is supplied and discharged or a cooling unit using a Peltier element may also be used.
  • the lower end flange portion 19 is attached to the lower end side of the pot 14 in the stirring pot 6, and the height position of the lower end flange portion 19 is changed to three locations. Specifically, by changing the slope of the extending cylindrical body 18 in the apparatus shown in FIG. 2, the downstream pipe 10 and the cooling pipe connected to the lower part of the side wall 14b of the pot 14 are The height position of the lower end flange portion 19 was changed so that the first shortest distance L1 with respect to the lower end flange portion 19 was 5 mm, 20 mm, and 50 mm. Then, in each case, the occurrence of devitrification in the molten glass Gm flowing within the downstream pipe 10 was observed.
  • the present inventors have come to the conclusion that if the first shortest distance L1 is 10 mm or more, no major problem will occur due to devitrification of the molten glass Gm. Moreover, from this result, it was confirmed that the first shortest distance L1 is preferably 20 mm or more, and more preferably 50 mm or more.

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

Abstract

La présente invention concerne un appareil de fabrication d'article en verre 1 qui comprend un appareil de transport 3 pour transporter du verre fondu Gm. L'appareil de transport 3 comprend un pot cylindrique 14 qui comporte une section de paroi inférieure 14a à l'extrémité inférieure de celui-ci, et un tuyau de raccordement 10 qui est relié à une partie inférieure d'une section de paroi latérale 14b du pot 14 et à travers lequel le verre fondu Gm s'écoule hors du pot 14. Une partie de bride 19 est disposée sur le côté d'extrémité inférieure du pot 14, et une borne 19a pour la conduction électrique et une structure de refroidissement 20 sont disposées sur la partie de bride 19. Une première distance la plus courte L1 entre le tuyau de raccordement 10 et la structure de refroidissement 20 est réglée à 10 mm ou plus.
PCT/JP2023/018830 2022-06-03 2023-05-19 Dispositif de fabrication d'article en verre et procédé de fabrication d'article en verre WO2023234083A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022090934 2022-06-03
JP2022-090934 2022-06-03

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WO2023234083A1 true WO2023234083A1 (fr) 2023-12-07

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007076939A (ja) * 2005-09-13 2007-03-29 Asahi Glass Co Ltd 電極付き耐火物構造体及びガラス製造装置
WO2020009143A1 (fr) * 2018-07-04 2020-01-09 日本電気硝子株式会社 Procédé et dispositif de fabrication d'un article en verre, et substrat en verre
WO2020255633A1 (fr) * 2019-06-17 2020-12-24 日本電気硝子株式会社 Dispositif de transfert de verre
WO2021002244A1 (fr) * 2019-07-03 2021-01-07 日本電気硝子株式会社 Dispositif de production d'article en verre et procédé de production
JP2021169383A (ja) * 2020-04-14 2021-10-28 日本電気硝子株式会社 ガラス物品の製造方法及びガラス物品の製造装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007076939A (ja) * 2005-09-13 2007-03-29 Asahi Glass Co Ltd 電極付き耐火物構造体及びガラス製造装置
WO2020009143A1 (fr) * 2018-07-04 2020-01-09 日本電気硝子株式会社 Procédé et dispositif de fabrication d'un article en verre, et substrat en verre
WO2020255633A1 (fr) * 2019-06-17 2020-12-24 日本電気硝子株式会社 Dispositif de transfert de verre
WO2021002244A1 (fr) * 2019-07-03 2021-01-07 日本電気硝子株式会社 Dispositif de production d'article en verre et procédé de production
JP2021169383A (ja) * 2020-04-14 2021-10-28 日本電気硝子株式会社 ガラス物品の製造方法及びガラス物品の製造装置

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