WO2015017594A1 - Muffle gap seal for glass laminate machine - Google Patents
Muffle gap seal for glass laminate machine Download PDFInfo
- Publication number
- WO2015017594A1 WO2015017594A1 PCT/US2014/048992 US2014048992W WO2015017594A1 WO 2015017594 A1 WO2015017594 A1 WO 2015017594A1 US 2014048992 W US2014048992 W US 2014048992W WO 2015017594 A1 WO2015017594 A1 WO 2015017594A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- seal
- radiation shield
- muffles
- thermal
- muffle
- Prior art date
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
- C03B17/02—Forming molten glass coated with coloured layers; Forming molten glass of different compositions or layers; Forming molten glass comprising reinforcements or inserts
Definitions
- Provisional Application Serial No. 61/860,478 filed on July 31, 2013, the content of which is relied upon and incorporated herein by reference in its entirety. This application is related to U.S. Provisional Application Serial No. 61/678,218 filed on August 1, 2012, also filed as PCT Application No. PCT/US13/53357.
- the disclosure relates to a glass fusion draw technology, and more particularly to a apparatus for sealing a gap between a clad muffle and a core muffle in a Laminate Fusion Draw Machine (LFDM).
- LFDM Laminate Fusion Draw Machine
- the present disclosure provides for a flexible seal assembly positioned between two muffles, such as between two muffles of a glass laminate fusion draw machine.
- the flexible seal assembly includes a radiation shield, a thermal seal, and an air seal.
- the radiation shield desirably comprises overlapping, mutually non-contacting rows of refractory material, which are desirably in the form of non-contacting interlaced rows of refractory bricks.
- the thermal seal desirably comprises a blanket of temperature resistant material, and the blanket may desirably be formed of a refractory fiber material encapsulated in a fabric formed of a refractory material, such as alumina silicate.
- the air seal desirably comprises a sheet of high temperature (that is, high- temperature-resistant) elastomeric material, such as silicone.
- the seal assembly may also desirably include a secondary radiation shield positioned between the thermal seal and the air seal.
- the secondary radiation shield may comprise a flexible metal sheet having folds therein.
- the seal is desirably positioned between two muffles of a glass laminate fusion draw machine, and the three parts a desirably arranged as follows, in order from the interior to the exterior of the muffles, (1) the radiation shield, (2) the a thermal seal, and (3) the air seal. [0009]
- the resulting three part seal provides thermal protection and impermeability to the gap region between two muffles via the three separate parts a radiation shield, a thermal seal, and an air seal which mechanically function independently of each other.
- Figure 1 is a diagrammatic three-dimensional representation of one example of desired motions of two muffles, illustrating six degrees of relative motion between them;
- Figure 2 is a cross-sectional view of a portion of an embodiment of the present disclosure
- Figure 3 is a cross sectional view of one aspect of the embodiment of Figure 2.
- Muffles are enclosures providing thermal and atmospheric insulation and protection for principally vertically oriented glass sheets during the fusion draw glass sheet forming process within a Fusion Draw Machine (FDM).
- FDM Fusion Draw Machine
- a Laminate Fusion Draw Machine has at least two adjacent muffles that move independently, in up to a full six degrees of freedom of relative movement, as represented schematically in Figure 1.
- an upper or first muffle 200 may be moveable in translation in the X and Z axes, and in rotation about the X and Y axes as indicated in the figure, while a lower or second muffle 300 may move in translation in the y direction and in rotation in around the z axis.
- muffles 200 and 300 be adjustable relative to each other in multiple degrees of freedom of relative movement, possibly in as much as six degrees, three degrees of (relative)
- FIG. 2 One embodiment of a seal of the present disclosure is shown in Figure 2, and is designated generally throughout by the reference numeral 10.
- the seal 10 is positioned between the structures of an upper muffle 200 and a lower muffle 300, and seals and retains the atmosphere and heat on an inner side of the seal I from escaping to and from being contaminated by atmosphere on an outer side of the seal O.
- the seal 10 comprises at least three parts, in order from inside I to outside O: a radiation shield 40, a thermal seal 30, and an atmospheric gas or air seal 20.
- the radiation shield 40 comprises an overlapping barrier of at least two, desirably at least three rows 42, 44, 46 of refractory brick.
- the radiation shield 40 shields the thermal seal 30 from the direct radiant heat of the firebox at the interior side I of the seal 10.
- the rows 42, 44, 46 of brick are arranged along the entire perimeter of the firebox. At least one row of brick 42 (and in this embodiment, row 46 also) extends up from the lower muffle 300 and at least one row 44 extends down from the upper muffle 200.
- the brick materials typically insulating fire bricks (IFBs), selected for the radiation shield are intended to reduce the temperature of the inner side of the thermal seal 30 to sustainable levels.
- Suitable materials for the rows 42, 44, 46 include IFB rated to at least 2800°C for row 42, and to at least 2600°C for rows 44 and 46.
- the thermal seal 30 comprises a thermal insulating blanket 32 that maintains a continuous C-shape within the muffle gap .
- This C-shape allows the blanket 32 to extend and compress easily within the relative vertical range of motion of the muffles 200, 300.
- the size and length of the blanket 32 C-shape is determined by and fabricated at the maximum gap between muffles 200, 300 so as not to create tension when the gap is increased during normal operation of the associated LFDM.
- the blanket 32 may be comprised in a composite form, including an inner layer 34 of an alkaline earth silicate wool, or of a another suitable material such as alumina fiber, encapsulated within a single layer 36 of an alumina silicate fabric.
- the blanket 32 desirably further includes flaps 38a and 38b comprising a double layer of fabric only.
- the blanket 32 is desirably securely fastened to the bottom of the upper muffle 200 and loosely confined by bolts that are attached to the top of the bottom muffle 300.
- the upper flap 38a of the blanket desirably contains holes to help fasten it to the bottom of the upper muffle 200.
- the lower flap 38b is desirably connnected to a sliding steel frame 310 attached to the top of the bottom muffle 300, and may contain slots to help enable relative x- and y- translation between the muffles.
- the air seal 20 comprises a sheet 22 of high temperature resistant elostomeric material, desirably silicone rubber, that continuously surrounds the entire gap between the two muffles 200, 300, and is securely fastened to the top of the lower muffle 300 and to the bottom of the upper muffle 200.
- the silicone rubber material of the sheet 22 provides high elasticity and the ability to handle the desired range of motion and degrees of freedom required while maintaining the integrity of the air seal 20.
- the sheet 22 is desirably as thin as possible, for instance 1/16" thick.
- the durometer of the material of sheet 22 is especially important. Low durometers are preferred for larger movements.
- the sheet 22 can be a single piece with only one joint or several pieces with an appropriate number of joints. It is fastened tightly to the two muffles 200, 300 on the outside face O of the seal 10. The air seal 20 is maintained during relative movement of the muffles 200, 300 by the stretching and/ or the distortion of the silicone rubber material of the sheet 32.
- an optional secondary radiation shield 50 may also be included as a part of the seal 10.
- the secondary radiation shield desirably may be positioned outwardly of the thermal seal, and may desirably comprise a corrugated aluminum sheet 52 attached within the muffle gap in a manner similar to the thermal seal 30, and optionally using the same mounting structures.
- the secondary radiation shield can provide additional protection for the air seal 20.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
- Gasket Seals (AREA)
- Diaphragms And Bellows (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Sealing Devices (AREA)
- Furnace Details (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016531876A JP6480932B2 (en) | 2013-07-31 | 2014-07-31 | Muffle gap seal for glass laminating equipment |
KR1020167005108A KR102213881B1 (en) | 2013-07-31 | 2014-07-31 | Muffle gap seal for glass laminate machine |
CN201480054259.2A CN105764861B (en) | 2013-07-31 | 2014-07-31 | Sleeve clearance seal for glass laminated machine |
EP14750932.7A EP3027568B1 (en) | 2013-07-31 | 2014-07-31 | Muffle gap seal for glass laminate machine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201361860478P | 2013-07-31 | 2013-07-31 | |
US61/860,478 | 2013-07-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015017594A1 true WO2015017594A1 (en) | 2015-02-05 |
Family
ID=51352850
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2014/048992 WO2015017594A1 (en) | 2013-07-31 | 2014-07-31 | Muffle gap seal for glass laminate machine |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP3027568B1 (en) |
JP (1) | JP6480932B2 (en) |
KR (1) | KR102213881B1 (en) |
CN (1) | CN105764861B (en) |
TW (1) | TW201509847A (en) |
WO (1) | WO2015017594A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11112085B2 (en) | 2017-12-15 | 2021-09-07 | Signify Holding B.V. | Lighting device housing, luminaire and method of manufacture |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070190340A1 (en) * | 2006-02-10 | 2007-08-16 | Coppola Frank T | Laminated glass articles and methods of making thereof |
US20100212360A1 (en) * | 2009-02-26 | 2010-08-26 | Robert Delia | Apparatus and method for drawing a ribbon of glass |
EP2363381A1 (en) * | 2010-02-22 | 2011-09-07 | Corning Incorporated | Apparatus for sealing a joint between vessels for conveying molten glass |
WO2012026136A1 (en) * | 2010-08-27 | 2012-03-01 | AvanStrate株式会社 | Device for manufacturing glass substrate and method for manufacturing glass substrate |
WO2014018838A2 (en) * | 2012-07-26 | 2014-01-30 | Corning Incorporated | Refractory liner structure and use in glass fusion draw |
-
2014
- 2014-07-31 CN CN201480054259.2A patent/CN105764861B/en not_active Expired - Fee Related
- 2014-07-31 TW TW103126240A patent/TW201509847A/en unknown
- 2014-07-31 KR KR1020167005108A patent/KR102213881B1/en active IP Right Grant
- 2014-07-31 EP EP14750932.7A patent/EP3027568B1/en not_active Not-in-force
- 2014-07-31 JP JP2016531876A patent/JP6480932B2/en not_active Expired - Fee Related
- 2014-07-31 WO PCT/US2014/048992 patent/WO2015017594A1/en active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070190340A1 (en) * | 2006-02-10 | 2007-08-16 | Coppola Frank T | Laminated glass articles and methods of making thereof |
US20100212360A1 (en) * | 2009-02-26 | 2010-08-26 | Robert Delia | Apparatus and method for drawing a ribbon of glass |
EP2363381A1 (en) * | 2010-02-22 | 2011-09-07 | Corning Incorporated | Apparatus for sealing a joint between vessels for conveying molten glass |
WO2012026136A1 (en) * | 2010-08-27 | 2012-03-01 | AvanStrate株式会社 | Device for manufacturing glass substrate and method for manufacturing glass substrate |
WO2014018838A2 (en) * | 2012-07-26 | 2014-01-30 | Corning Incorporated | Refractory liner structure and use in glass fusion draw |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11112085B2 (en) | 2017-12-15 | 2021-09-07 | Signify Holding B.V. | Lighting device housing, luminaire and method of manufacture |
Also Published As
Publication number | Publication date |
---|---|
CN105764861B (en) | 2019-06-18 |
JP2016534007A (en) | 2016-11-04 |
CN105764861A (en) | 2016-07-13 |
EP3027568A1 (en) | 2016-06-08 |
KR20160039253A (en) | 2016-04-08 |
TW201509847A (en) | 2015-03-16 |
JP6480932B2 (en) | 2019-03-13 |
KR102213881B1 (en) | 2021-02-09 |
EP3027568B1 (en) | 2019-02-20 |
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