[go: up one dir, main page]

WO2025058762A1 - Brûleur pour la prévention de verre dévitrifié lors de la fabrication de verre - Google Patents

Brûleur pour la prévention de verre dévitrifié lors de la fabrication de verre Download PDF

Info

Publication number
WO2025058762A1
WO2025058762A1 PCT/US2024/042006 US2024042006W WO2025058762A1 WO 2025058762 A1 WO2025058762 A1 WO 2025058762A1 US 2024042006 W US2024042006 W US 2024042006W WO 2025058762 A1 WO2025058762 A1 WO 2025058762A1
Authority
WO
WIPO (PCT)
Prior art keywords
burner
flame
glass
edge director
glass forming
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/US2024/042006
Other languages
English (en)
Inventor
Curtis Richard Cowles
Wei Yu Lee
Michael Yoshiya Nishimoto
Dale Robert Powers
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Corning Inc
Original Assignee
Corning Inc
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 Corning Inc filed Critical Corning Inc
Publication of WO2025058762A1 publication Critical patent/WO2025058762A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
    • C03B17/06—Forming glass sheets
    • C03B17/064—Forming glass sheets by the overflow downdraw fusion process; Isopipes therefor
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
    • C03B17/06—Forming glass sheets
    • C03B17/067—Forming glass sheets combined with thermal conditioning of the sheets
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
    • C03B17/06—Forming glass sheets
    • C03B17/068—Means for providing the drawing force, e.g. traction or draw rollers

Definitions

  • Embodiments relate generally to the use of burners to prevent devitrification growth during glass manufacturing, such as to prevent devitrification growth on edge directors.
  • a burner is utilized to heat an edge director in a glass forming system. This heat may assist in reducing the size of or eliminating cold areas on edge directors, with the cold areas having a temperature below the liquidus temperature for the molten glass. This heat may also help prevent cold areas from forming during operation of the glass forming system in some embodiments.
  • a burner may optionally be directed towards the molten glass itself to remove devit already developed. Where burners are directed towards molten glass, the heat from the burner may be directed to an elevation above the target location where cold areas have developed, and the heated molten glass may flow downwardly to the cold areas. Burner technology may provide a cost effective approach for local heating of molten glass.
  • the burner may heat air upstream of the edge director, and chimney air current may cause the heat to rise towards the edge director. By doing so, the chance of damage to the edge director may be reduced by avoiding direct exposure of the edge director to a flame, but heat may still be applied with the burner in a more targeted manner than radiation heaters so that heat is used efficiently.
  • Burners may be gas-powered, and this may reduce the costs of operation as gas tends to be significantly cheaper than electricity. Burners may also be easily introduced and/or adjusted to fit in a wide variety of systems.
  • a glass forming system for controlling devitrification in glass.
  • the glass forming system comprises a glass forming body, an edge director, and a burner.
  • the edge director is positioned proximate to the glass forming body, and the edge director is configured to contact molten glass flowing on the glass forming body to assist in controlling a shape of a glass ribbon formed by the molten glass.
  • the burner is configured to generate a flame that produces heat, and the burner is positioned proximate to the edge director so that the heat from the flame increases a temperature of the edge director.
  • the heat from the flame may increase the temperature of the molten glass at one or more locations.
  • heating at least one of the edge director or the molten glass may reduce buildup of devitrified glass proximate to the edge director.
  • the burner may be configured to enable changes in at least one of a size of the flame or a direction of the flame.
  • the glass forming body may comprise a root, the burner may be positioned at a height lower than the root and the edge director, and the heat from the burner may rise from the burner to heat the edge director.
  • the root may comprise a linear shape and at least a portion of the burner may extend in a direction parallel to the root.
  • the root may comprise a linear shape and at least a portion of the burner may extend in a direction perpendicular to the root.
  • the glass forming system may be arranged to create a chimney effect to cause an upward flow of air that assists in heating the edge director.
  • the burner may comprise an outlet where a flame is output from the burner.
  • the burner is positioned below the edge director, and the heat from the flame generated by the burner rises to increase the temperature of the edge director.
  • the burner may be configured to enable steering of a direction of the flame. Additionally, in some embodiments, the burner may be configured to enable steering of the direction of the flame by mechanically moving an outlet on the burner where the flame is output from the burner. Furthermore, in some embodiments, the burner is configured to enable steering of the direction of the flame without mechanically moving an outlet on the burner where the flame is output from the burner. In some embodiments, the burner may also comprise an outlet surface. The burner may also comprise a first oxygen supply channel and a second oxygen supply channel, with the first oxygen supply channel and the second oxygen supply channel configured to output oxygen to assist in generation of the flame.
  • the burner may be configured to apply a greater amount of oxygen at the first oxygen supply channel relative to the second oxygen supply channel to cause the flame to be emitted at an angle not normal to the outlet surface.
  • a gas supply channel may be positioned between the first oxygen supply channel and the second oxygen supply channel.
  • the glass forming system may also comprise a temperature sensor, and the flame may be generated by the burner based on temperature data from the temperature sensor.
  • the temperature sensor may be configured to measure the temperature of the edge director.
  • at least one of a size of the flame generated by the burner, a frequency at which the flame is generated by the burner, or a duration of time the flame is generated are dependent on the temperature at the edge director.
  • the flame may be generated by the burner when the temperature at the edge director falls below a threshold temperature.
  • the glass forming system may also comprise a processor and memory comprising computer readable code.
  • the computer readable code is configured, when executed, to cause the processor to receive first temperature data from the temperature sensor and to determine that a temperature at the edge director or the molten glass is below or above a threshold value. After the determining, The computer readable code is configured, when executed, to cause at least one of the flame to be generated at the burner, a change in a size of the flame generated at the burner, a change in a direction of an outlet of the burner to target a location having a temperature below the threshold value, or a change in a direction of the flame generated at the burner to target the location.
  • FIG. 4B is an enhanced, schematic view illustrating the burner of the example glass forming system of FIG. 4A, in accordance with some embodiments discussed herein;
  • FIG. 5A is a schematic view illustrating another example glass forming system where a burner is positioned proximate to an edge director to heat the edge director, in accordance with some embodiments discussed herein;
  • FIG. 5B is an enhanced, schematic view illustrating the burner of the example glass forming system of FIG. 5A, in accordance with some embodiments discussed herein;
  • FIG. 6A is a schematic view illustrating another example glass forming system where a burner is positioned proximate to an edge director to heat the edge director, in accordance with some embodiments discussed herein;
  • FIG. 6B is an enhanced, schematic view illustrating the burner of the example glass forming system of FIG. 6A, in accordance with some embodiments discussed herein;
  • FIG. 7A is a schematic view illustrating another example glass forming system where a burner is positioned proximate to an edge director to heat the edge director, in accordance with some embodiments discussed herein;
  • FIG. 7B is a schematic view illustrating another example glass forming system where a burner is positioned proximate to an edge director to heat the edge director, in accordance with some embodiments discussed herein;
  • FIG. 8 is a schematic view illustrating an example burner capable of steering the direction of a flame relative to an outlet of the burner, in accordance with some embodiments discussed herein;
  • FIG. 9 is a perspective view illustrating an example burner head with a plurality of openings on the burner head, in accordance with some embodiments discussed herein;
  • FIG. 10 is a block diagram illustrating an example components of a glass forming system, in accordance with some embodiments discussed herein;
  • FIG. 11 is a flow chart illustrating an example method for manufacturing a glass forming system, in accordance with some embodiments discussed herein;
  • FIG. 12 is a flow chart illustrating an example method for using a glass forming system, in accordance with some embodiments discussed herein.
  • the term “about” means that amounts, sizes, formulations, parameters, and other quantities and characteristics are not and need not be exact, but may be approximate and/or larger or smaller, as desired, reflecting tolerances, conversion factors, rounding off, measurement error and the like, and other factors known to those of skill in the art.
  • the term “about” is used in describing a value or an endpoint of a range, the disclosure should be understood to include the specific value or endpoint referred to.
  • the width W of the glass ribbon 103 may be in a range from about 20 millimeters to about 4,000 millimeters, from about 50 millimeters to about 4,000 millimeters, from about 100 millimeters to about 4,000 millimeters, from about 500 millimeters to about 4,000 millimeters, from about 1,000 millimeters to about 4,000 millimeters, from about 2,000 millimeters to about 4,000 millimeters, from about 3,000 millimeters to about 4,000 millimeters, from about 20 millimeters to about 3,000 millimeters, from about 50 millimeters to about 3,000 millimeters, from about 100 millimeters to about 3,000 millimeters, from about 500 millimeters to about 3,000 millimeters, from about 1,000 millimeters to about 3,000 millimeters, from about 2,000 millimeters to about 3,000 millimeters, from about 2,000 millimeters to about 2,500 millimeters, and all ranges and subrange
  • a draw plane 272 extends through the root 245.
  • the glass ribbon 203 may be drawn in the downstream direction 268 along the draw plane 272.
  • the draw plane 272 bisects the root 245 in a generally horizontal, lengthwise direction of the forming vessel.
  • the draw plane 272 may extend at other orientations with respect to the root 245.
  • FIGS. 1 and 2 generally depict one embodiment of a glass forming apparatus and a forming vessel, it should also be understood that aspects of the present disclosure may be used with various other forming vessel configurations.
  • the forming vessel 260 may comprise an edge director 280A intersecting with the pair of downwardly inclined forming surface portions 266A, 266B. While one edge director 280A is illustrated at a first end 264A of the glass forming body 210, another edge director may be positioned at the other end of the glass forming body 210.
  • the edge director 280A may help achieve a desired glass ribbon width and edge bead characteristics by directing the molten glass proximate to the root 245 of the glass forming body 210.
  • the edge director may intersect with both downwardly inclined forming surface portions 266A, 266B.
  • each opposed end of the glass forming body 210 is provided with a retaining block 284 designed to laterally position the edge director 280A.
  • the edge director 280A may include an upper portion 286 and a lower portion 288.
  • the lower portion 288 can, in some embodiments, join the edge director 280A on the first end 264A with a second edge director on the second opposed end. Joining edge directors together may be beneficial to simplify assembly of the edge directors to the glass forming body 210.
  • the upper portions 286 of the edge directors may be provided separately.
  • the edge director 280A is separate from a second edge director and the separate edge directors are assembled independently to each of the pair of downwardly inclined forming surface portions 266A, 266B of the glass forming body 210.
  • providing upper portions 286 that are not joined may simplify the manufacture of edge directors.
  • the glass manufacturing apparatus 100 also includes at least one edge roller assembly for drawing glass ribbon from the root 245 of the forming vessel 260. While only one edge roller assembly 230A is illustrated in FIG. 2, another roller assembly may be included on the opposite side of the glass ribbon 203.
  • the edge roller assembly 230A includes a pair of edge rollers 232 configured to engage a corresponding edge of the glass ribbon 203 as the glass ribbon 203 is drawn from the root 245 of the glass forming body 210.
  • the edge roller assembly 230 aids in drawing the glass ribbon 203 from the root 245 of the glass forming body 210 and also facilitates proper finishing of the edges of the glass ribbon 203.
  • the edge roller assembly 230A may provide the desired edge characteristics and proper fusion of the edge portions of the molten glass being drawn off opposed surfaces of the edge director 280A associated with the pair of downwardly inclined forming surface portions 266A, 266B.
  • the edge roller assembly 230A may be located at various positions within the viscous region of the glass being drawn from the root 245.
  • the edge roller assembly 230A may be located at various positions below the root 245. Where multiple edge roller assemblies are used, the edge roller assemblies may be substantially identical to each other.
  • FIG. 2 depicts one embodiment of an edge roller assembly 230A. As depicted in FIG.
  • the housing seal plate 236 forms part of a housing which encloses the forming vessel 260, any edge directors, and any edge roller assemblies.
  • the housing may comprise a refractory material, steel, and/or other thermal insulation to protect sensitive components of the motor and/or other mechanisms located within the housing as well as to thermally insulate the forming vessel 260, and the molten glass flowing in and around the forming vessel 260, from the surrounding environment.
  • the replaceable heating cartridge 208 may be positioned below a portion of the edge director 280A and may extend generally in a direction parallel to the root 245 of the glass forming body 210 and in close proximity to the shafts. As shown in FIG. 2, the replaceable heating cartridge 208 may be positioned below only a portion of the edge director 280A. Positioning the replaceable heating cartridge 208 in this manner may maximize the heat directed onto the edge director 280A while ensuring that the lower edge 222 of the center facet 262 of the heat directing surface 222A does not interfere with the glass ribbon 203 drawn from the glass forming body 210.
  • the replaceable heating cartridge 208 is illustrated in one position relative to the other components in FIG.
  • the replaceable heating cartridge 208 may be moved to other positions.
  • the replaceable heating cartridge 208 may be positioned closer to the edge director 280A in some embodiments, but the replaceable heating cartridge 208 may be positioned farther away from the edge director 280A in other embodiments.
  • the refractory material of the heat directing surface 222A may extend into the enclosure.
  • the refractory material 228 may be formed from commercially available refractory materials including, without limitation, DuraBoard® 3000 and/or DuraBoard® 2600.
  • the replaceable heating cartridge 208 includes an enclosure 220 comprising a heat directing surface 222A with at least one heating element 224 positioned on or adjacent to the face thereof.
  • the enclosure 220 may be fabricated from a variety of materials that absorb or reflect heat energy or that provide a thermal shield while maintaining structural integrity under typical temperature conditions associated with the glass manufacturing apparatus 100.
  • the enclosure 220 and other portions of the replaceable heating cartridge 208 may be formed from a refractory material, high temperature, nickel-based alloys, steel (e.g., stainless steel), or other alloys or other materials or combinations of materials to meet the structural and/or thermal requirements of the glass manufacturing apparatus.
  • the enclosure 220 may be made of nickel-based alloys, such as Hanes 214.
  • the heat directing surface 222A of the replaceable heating cartridge 208 is formed from a ceramic refractory backer material with low emissivity. Suitable ceramic refractory materials include, without limitation, SALI board available from Zircar ceramics. Portions of the enclosure which are not directly exposed to the high temperatures of the glass manufacturing apparatus may be made from materials suitable for lower temperature applications.
  • a back face of the enclosure 220 may be made from stainless steel, such as, for example, 420 stainless steel.
  • the replaceable heating cartridge 208 may also include a heating element 224 positioned on or adjacent to the heat directing surface 222A of the enclosure 220.
  • the heating element 224 positioned on or adjacent to the heat directing surface 222A is a resistance heating element.
  • the material of the resistance heating element may be molybdenum disilicide, platinum, platinum-rhodium, iron-chromium-aluminum alloys such as Kanthal Al, Kanthal APM (a ferritic iron-chromium-aluminum alloy), or another appropriate winding material.
  • the heating element 224 may be constructed from wire formed from one of the above referenced materials which is wound into a coil.
  • the heating element 224 may be constructed from platinum wire comprising a circular cross section which is wound around a mandrel comprising a circular cross section in order to form a coil with a circular cross section.
  • wire of the heating element may be wound around a mandrel comprising an elongated cross section, such as an oval, ellipse, or the like, in order to produce a coil comprising the same elongated cross section as the mandrel.
  • forming the heating element 224 from a coil with an elongated cross section may improve the heating efficiency of the coil by increasing the power-carrying capacity of the coil.
  • platinum wire comprising a circular cross section which is wound into an oval coil with a 3/8 inch (9.53 millimeter) internal major diameter and a 3/16 inch (4.78 millimeter) internal minor diameter has a 25 percent increase in power carrying capacity compared to a round coil comprising a 3/8 inch (9.53 millimeter) diameter formed from the same platinum wire.
  • the increased power carrying capacity translates to improved heating efficiency and efficacy for the coil.
  • the heat directing surface 222A comprises a plurality of facets oriented to at least partially surround the edge director(s).
  • the heat directing surface 222A has a center facet 262 and two side facets 264 on opposite ends of the center facet 262.
  • the largest angle between each of the two side facets 264 relative to the center facet 262 is from about 145 degrees to about 175 degrees.
  • the largest angle between each of the two side facets 264 relative to the center facet 262 may about 160 degrees, although it should be understood that other angles are possible and contemplated.
  • FIG. 3 is a schematic view illustrating example cold areas on an edge director having a decreased temperature relative to other portions of the edge director.
  • the first area 382A and the second area 382B may be locations that have fallen below a specified temperature, and other portions of the edge director 380A may be above the specified temperature.
  • the specified temperature may be the glass liquidus temperature for the molten glass.
  • an increased risk may be present that molten glass will devitrify at locations proximate to the areas.
  • the molten glass may be subject to an increased risk of devitrification.
  • a temperature sensor such as a thermocouple may be utilized to obtain the temperature at various points on the edge director 380A.
  • FIG. 4A an example glass forming system 450A is illustrated with a burner 484 being positioned proximate to an edge director 480A to heat the edge director 480A.
  • the burner 484 may be used to allow the glass forming system 450A to control the amount of devitrification in glass.
  • the burner 484 may indirectly heat the molten glass to prevent devitrification of glass at locations proximate to the edge director 480A.
  • the heat from the flame may be directed directly to the molten glass itself rather than the edge director 480A.
  • the glass forming system 450A comprises a glass forming body 410, an edge director 480A, and a burner 484.
  • the edge director 480A is positioned proximate to the glass forming body 410, and the edge director 480A is in contact with the glass forming body 410 in FIG. 4A.
  • the edge director 480A is configured to contact molten glass flowing down the sides of the glass forming body 410 to assist in controlling the shape of a glass ribbon 403 formed by the molten glass.
  • the burner 484 and other burners described herein may be positioned at a lower height than the root 445 of the glass forming body and at a lower height than the edge director 480A.
  • the burner 484 and other burners described herein may also be positioned at a greater height than any edge rollers 232A, 232B (see FIG. 2). At this position, heat generated by flames from the burners may rise to heat the edge director 480A.
  • the glass ribbon 403 is illustrated with various regions having different temperatures falling in different temperature ranges. The shape of these regions is exemplary based on the temperatures that occur before the burner is ever used.
  • the glass ribbon 403 comprises a first region 403 A, a second region 403B, a third region 403C, and a fourth region 403D.
  • the first region 403A has temperatures within a first temperature range
  • the second region 403B has temperatures within a second temperature range below the first temperature range
  • the third region 403C has temperatures within a third temperature range below the second temperature range
  • the fourth region 403D has temperatures within a fourth temperature range below the third temperature range.
  • the edge director 480A comprises a first area 482A and a second area 482B.
  • the first area 482A and the second area 482B each have temperatures within the second temperature range so that the temperatures at the areas 482A, 482B generally match the temperatures of the second region 403B.
  • Remaining areas of the edge director 480A have temperatures within the first temperature range so that the temperatures at these remaining areas generally match the temperatures of the first region 403A.
  • the temperature may be below the glass liquidus temperature.
  • Arches are illustrated at locations 490A, 490B in the shape of the regions 403B, 403C, 403D, and this is indicative of a decreased temperature at these locations 490A, 490B.
  • the burner 484 may be used to heat the edge director 480A to reduce the size of the area 482A, 482B or to completely eliminate these areas 482A, 482B, and doing so may indirectly heat the molten glass at locations proximate to the sides of the glass ribbon 403 to make the arch shapes less pronounced at the locations 490A, 490B. This heat applied by the burner 484 may assist in preventing devitrification of glass at locations proximate to the edge director 480A and at locations 490A, 490B.
  • the burner 484 comprises a body 484A and a head 484B.
  • the body 484A of the burner 484 extends in a direction parallel to the root 445, with the root 445 comprising a linear shape.
  • the head 484B comprises one outlet 484C, but a greater number of outlets 484C may be included in the head 484B in other embodiments.
  • the burner 484 may be configured to generate a flame that produces heat.
  • the burner 484 may be configured to increase and decrease the size of the flame. This may be done by increasing an amount of gas or oxygen and/or by increasing a power level for the burner.
  • the burner 484 may be positioned proximate to the edge director 480A so that the heat from flames generated by the burner 484 increases the temperature of the edge director 480A.
  • the burner 484 may steer any flames generated by the burner 484 by mechanically moving outlets 484C on the burner 484. Additionally or alternatively, the burner 484 may be capable of steering flames without mechanically moving the outlets 484C, and this may be accomplished, for example, using an approach similar to the one described in reference to FIG. 8.
  • the burner 484 may be utilized to ensure that a temperature at the edge director 480A remains above a glass liquidus temperature for the molten glass.
  • the burner 484 and other burners described herein may be adjusted and/or positioned to easily fit within the framework of a glass forming system.
  • the burner 484 is positioned in the glass forming system 450 so that the burner 484 extends underneath the insulation 488 and the replaceable heating cartridge 408.
  • a space 489 is positioned between the edge director 480A and the replaceable heating cartridge 480, and the head 484B of the burner 484 extends into the space 489.
  • the space 489 may enable the head 484B to be adjusted in some embodiments.
  • Other burners may be similarly positioned.
  • the glass forming system 450A creates a chimney effect to cause an upward flow of air.
  • Chimney air current may flow substantially in the direction indicated by the arrow 492, and this upward flow of air may assist in heating the edge director 480A.
  • no exhaust system is included since the total amount of heat energy is relatively small, but an exhaust system may be included in other embodiments.
  • Glass forming systems described herein may be positioned in a muffle or another contained environment in some embodiments.
  • the head 484B of the burner 484 extends in a first direction DI, with this first direction DI being offset at a first angle 01 relative to the horizontal plane.
  • the first angle 01 may be about 10 degrees in the illustrated embodiment, but this angle may possess other values in other embodiments.
  • the outlet 484C may be configured to cause any flames that are formed to extend substantially in a direction extending at this first angle.
  • the burner 484 is configured to cause flames to be directed towards the glass ribbon 403. Aiming the burner 484 in this direction heats the surrounding air, and a chimney air current may cause the heat to rise towards the edge director 480A.
  • the angle of burners may be different.
  • FIG. 5 A Another example glass forming system is illustrated in FIG. 5 A, with a burner being positioned proximate to an edge director to heat the edge director.
  • the glass forming system 450B is similar to the glass forming system 450A of FIG. 4A, but a different burner 485 is used in the glass forming system 450B of FIG. 5A.
  • the burner 485 is provided in the form of a surface mix burner, with flames being emitted at multiple outlets and with these flames mixing proximate to an outlet surface of the burner 485.
  • the burner 485 of FIG. 5 A may be configured to heat a relatively wide zone (e.g., as compared to the burner 484 shown in FIG. 4A).
  • the burner 485 may be configured to generate multiple flames to control the heat at an edge director 480A.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Glass Melting And Manufacturing (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)

Abstract

Est prévu un système de formation de verre pour commander la dévitrification du verre. Le système de formation de verre comprend un corps de formation de verre, un guide de bord et un brûleur. Le guide de bord est positionné à proximité du corps de formation de verre, et le guide de bord est conçu pour entrer en contact avec du verre fondu s'écoulant sur le corps de formation de verre pour aider à réguler la forme d'un ruban de verre formé par le verre fondu. Le brûleur est conçu pour générer une flamme qui produit de la chaleur. Le brûleur est positionné à proximité du guide de bord, de sorte que la chaleur provenant de la flamme augmente une température du guide de bord.
PCT/US2024/042006 2023-09-11 2024-08-13 Brûleur pour la prévention de verre dévitrifié lors de la fabrication de verre Pending WO2025058762A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US202363581739P 2023-09-11 2023-09-11
US63/581,739 2023-09-11

Publications (1)

Publication Number Publication Date
WO2025058762A1 true WO2025058762A1 (fr) 2025-03-20

Family

ID=94839502

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2024/042006 Pending WO2025058762A1 (fr) 2023-09-11 2024-08-13 Brûleur pour la prévention de verre dévitrifié lors de la fabrication de verre

Country Status (3)

Country Link
CN (1) CN119591311A (fr)
TW (1) TW202532355A (fr)
WO (1) WO2025058762A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009519884A (ja) * 2005-12-15 2009-05-21 ブルース テクノロジー エルエルシー オーバーフローダウンドローガラス成形方法および装置
WO2014099560A1 (fr) * 2012-12-21 2014-06-26 Corning Incorporated Procédé et appareil pour réduire la dévitrification sur des guides de bordure avec un chauffage par induction
US20200095154A1 (en) * 2017-04-28 2020-03-26 Corning Incorporated Edge directors including an interior heating device
US20200299173A1 (en) * 2017-04-24 2020-09-24 Corning Incorporated Fusion draw apparatus and methods of making a glass ribbon
WO2021015943A1 (fr) * 2019-07-22 2021-01-28 Corning Incorporated Système et procédés d'élimination de verre dévitrifié par laser

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009519884A (ja) * 2005-12-15 2009-05-21 ブルース テクノロジー エルエルシー オーバーフローダウンドローガラス成形方法および装置
WO2014099560A1 (fr) * 2012-12-21 2014-06-26 Corning Incorporated Procédé et appareil pour réduire la dévitrification sur des guides de bordure avec un chauffage par induction
US20200299173A1 (en) * 2017-04-24 2020-09-24 Corning Incorporated Fusion draw apparatus and methods of making a glass ribbon
US20200095154A1 (en) * 2017-04-28 2020-03-26 Corning Incorporated Edge directors including an interior heating device
WO2021015943A1 (fr) * 2019-07-22 2021-01-28 Corning Incorporated Système et procédés d'élimination de verre dévitrifié par laser

Also Published As

Publication number Publication date
CN119591311A (zh) 2025-03-11
TW202532355A (zh) 2025-08-16

Similar Documents

Publication Publication Date Title
US9643874B2 (en) Methods and apparatuses for reducing heat loss from edge directors
US8176753B2 (en) Methods and apparatus for reducing heat loss from an edge director
CN108349770B (zh) 用于形成玻璃带的方法和设备
EP2991937B1 (fr) Appareil et procédé de contrôle de profil thermique dans une goulotte d'écoulement ("isopipe")
TWI540107B (zh) 用於熔合曳引玻璃帶的設備與方法
TWI627140B (zh) 以感應加熱之方式於邊緣導引件上最小化失透性之方法及設備
US20250051209A1 (en) Glass manufacturing apparatus and methods
TW201125827A (en) Method and apparatus for controlling sheet thickness
TW201522254A (zh) 製造玻璃帶之玻璃製造設備及方法
WO2025058762A1 (fr) Brûleur pour la prévention de verre dévitrifié lors de la fabrication de verre
TWI753002B (zh) 用於形成玻璃製品的設備及方法
EP1622840A1 (fr) Four a chauffage a convection pour feuille de verre trempe
EP1481949A1 (fr) Four et procédé de chauffage de feuilles de verre revêtues
CN106746501B (zh) 玻璃窑炉
JP6446958B2 (ja) 連続加熱炉および輻射加熱器
US20090193850A1 (en) Heating apparatus and glass manufacturing method
CN116274433A (zh) 预防带钢开卷时边部开裂的辐射加热装置
JPH10273720A (ja) 連酸ライン板継ぎ溶接部の焼鈍方法及び装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 24866042

Country of ref document: EP

Kind code of ref document: A1