[특허]Apparatus for melting and refining silica-based glass

Owens-Brockway Glass Container Inc.

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특허 상세정보

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Apparatus for melting and refining silica-based glass

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C03B-005/225 C03B-005/173 C03B-005/187
출원번호	US-0832829 (2013-03-15)
등록번호	US-9637406 (2017-05-02)
발명자 / 주소	Dewet-Smith, Dawid Leidy, D. Wayne Fayerweather, Carl L. Swiler, Daniel R. Clark, Terence J.
출원인 / 주소	Owens-Brockway Glass Container Inc.
인용정보	피인용 횟수 : 0 인용 특허 : 13

초록
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An apparatus for melting and refining a silica-based glass composition includes a vertical first reaction chamber having an input adjacent to a lower end for receiving glass-forming components. The glass-forming components are heated to elevated temperature during upward flow through the vertical first reaction chamber to form a glass precursor melt adjacent to an upper end of the vertical first reaction chamber. A vertical second reaction chamber has an input adjacent to an upper end and an output adjacent to a lower end for delivering glass melt. A cross passage connects the upper end of the vertical first reaction chamber to the upper end of the vertical second reaction chamber such that the precursor melt flows from the vertical first reaction chamber through the cross passage and then through the vertical second reaction chamber to homogenize the precursor melt. Vacuum preferably is applied to the cross passage both to assist upward flow through the vertical first reaction chamber, and to assist refining of the precursor melt during such upward flow and during flow through the cross passage.

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1. An apparatus for making glass including: a first vertical chamber having an inlet adjacent a lower end thereof and an outlet adjacent an upper end thereof through which molten glass or a molten glass precursor is discharged;a first melting vessel in the form of an induction heated crucible in which solid glass forming components are received, melted, and reacted with one another to produce molten glass or a molten glass precursor, said first melting vessel including a dam and being operatively coupled to said inlet of said first vertical chamber such that the molten glass or the molten glass precursor produced in said first melting vessel is introduced into said first vertical chamber via said inlet of said first vertical chamber, wherein said dam prevents migration of un-melted glass forming components from said first melting vessel into said first vertical chamber;a second vertical chamber spaced from and separate from said first vertical chamber, said second vertical chamber having an inlet at an upper end thereof through which molten glass or a molten glass precursor is received from said first vertical chamber and an outlet at a lower end thereof through which molten glass is discharged; anda cross passage connecting said upper ends of said first and second vertical chambers and through which molten glass or a molten glass precursor flows from said first vertical chamber into said second vertical chamber,wherein said cross passage includes a first inlet in which at least one solid glass-forming material is received and introduced into the molten glass or the molten glass precursor flowing through said cross passage at a location above a free surface of the molten glass or the molten glass precursor flowing therethrough, andwherein said cross passage includes a second inlet in which molten glass or a molten glass precursor is received and introduced into the molten glass or the molten glass precursor flowing through said cross passage at a location below a free surface of the molten glass or the molten glass precursor flowing therethrough. 2. The apparatus set forth in claim 1 including a vacuum coupled to said cross passage that assists upward flow of molten glass or a molten glass precursor through said first vertical chamber and removal of gas bubbles therefrom. 3. The apparatus set forth in claim 1 including a rotatable shaft with paddles extending through at least a portion of said second vertical chamber that mixes the at least one solid glass-forming material into the molten glass or the molten glass precursor flowing downward through said second vertical chamber. 4. The apparatus set forth in claim 1 wherein said second vertical chamber includes at least one cross wall that divides said second vertical chamber into a plurality of cells and prevents direct passage of the at least one solid glass-forming material through said second vertical chamber. 5. The apparatus set forth in claim 1 including a second melting vessel disposed between and operatively coupled to said first melting vessel and to said inlet of said first vertical chamber, wherein at least one solid glass-forming material is received within said second melting vessel and introduced into the molten glass or the molten glass precursor flowing from said first melting vessel into said first vertical chamber. 6. The apparatus set forth in claim 5 wherein said second melting vessel includes a paddle coupled to a motor that mixes the at least one solid glass-forming material into the molten glass flowing from said first melting vessel into said first vertical chamber. 7. The apparatus set forth in claim 6 including a vacuum coupled to an interior of said second melting vessel that assists in removal of gas bubbles from the molten glass or the molten glass precursor flowing from said first melting vessel into said first vertical chamber. 8. A modular apparatus for making glass, including at least two apparatuses as set forth in claim 1, said apparatuses being arranged in parallel and being selectively connectible and disconnectable from one another. 9. The apparatus set forth in claim 1 wherein said cross passage includes a top and a bottom, and said first inlet in said cross passage is located in said top of said cross passage and said second inlet in said cross passage is located in said bottom of said cross passage. 10. The apparatus set forth in claim 1 wherein said cross passage includes a first end, a second end opposite said first end, and an outlet located at an intermediate location between said first and second ends, said first inlet in said cross passage being located at said first end of said cross passage and said second inlet in said cross passage being located at said second end of said cross passage, and wherein molten glass is discharged from said cross passage via said outlet located between said first and second ends of said cross passage. 11. An apparatus for making glass including: a first vertical chamber having an inlet adjacent a lower end thereof and an outlet adjacent an upper end thereof through which molten glass or a molten glass precursor is discharged;a second vertical chamber spaced from and separate from said first vertical chamber, said second vertical chamber having an inlet at an upper end thereof through which molten glass or a molten glass precursor is received from said first vertical chamber and an outlet at a lower end thereof through which molten glass is discharged;a cullet melting vessel spaced from and separate from said first and second vertical chambers that receives and melts solid cullet to produce molten glass; anda cross passage through which molten glass or a molten glass precursor flows from said first vertical chamber into said second vertical chamber, wherein said cross passage connects said upper ends of said first and second vertical chambers to each other and to an outlet of said first melting vessel,wherein said cross passage includes a first inlet in which at least one solid glass-forming material is received and introduced into the molten glass or the molten glass precursor flowing through said cross passage at a location above a free surface of the molten glass or the molten glass precursor flowing therethrough,wherein said cross passage includes a second inlet in which molten glass or a molten glass precursor is received and introduced into the molten glass or the molten glass precursor flowing through said cross passage at a location below a free surface of the molten glass or the molten glass precursor flowing therethrough, andwherein molten glass produced in said cullet melting vessel is received within said cross passage via said second inlet in said cross passage and introduced into said second vertical chamber via said inlet in said second vertical chamber. 12. The apparatus set forth in claim 11 wherein said cullet melting vessel includes a dam that prevents migration of un-melted cullet from said cullet melting vessel into said cross passage. 13. An apparatus for making glass including: a first melting vessel in which solid glass forming components are received, melted, and reacted with one another to produce molten glass or a molten glass precursor;a first vertical chamber having an inlet adjacent a lower end thereof through which the molten glass or the molten glass precursor is received from said first melting vessel and an outlet adjacent an upper end thereof through which the molten glass or the molten glass precursor is discharged;a second vertical chamber spaced from and separate from said first vertical chamber;a cullet melting vessel spaced from and separate from said first and second vertical chambers that receives and melts solid cullet to produce molten glass; anda cross passage connecting upper ends of said first and second vertical chambers to each other and to said cullet melting vessel and through which molten glass or a molten glass precursor flows from said first vertical chamber and said cullet melting vessel into said second vertical chamber;wherein said second vertical chamber has an inlet at its upper end through which molten glass or a molten glass precursor is received from said first vertical chamber and from said cullet melting vessel and an outlet at a lower end thereof through which molten glass is discharged, andwherein said cullet melting vessel has an outlet located below a free surface of the molten glass or the molten glass precursor flowing through said cross passage. 14. The apparatus set forth in claim 13 wherein said cullet melting vessel includes a dam that prevents migration of un-melted cullet from said cullet melting vessel into said cross passage. 15. The apparatus set forth in claim 13 including a vacuum coupled to said cross passage to assist upward flow of molten glass or a molten glass precursor through said first vertical chamber and removal of gas bubbles therefrom. 16. The apparatus set forth in claim 13 wherein said cross passage includes a first inlet through which at least one solid glass-forming material is received and introduced into molten glass or a molten glass precursor flowing from said first vertical chamber and from said cullet melting vessel into said second vertical chamber. 17. The apparatus set forth in claim 16 including a rotatable shaft with paddles extending through at least a portion of said second vertical chamber that mixes the at least one solid glass- forming material into the molten glass or the molten glass precursor flowing downward through said second vertical chamber. 18. The apparatus set forth in claim 16 wherein said second vertical chamber includes at least one cross wall that divides said second vertical chamber into a plurality of cells and prevents direct passage of the at least one solid glass-forming material through said second vertical chamber. 19. The apparatus set forth in claim 13 including a third vertical chamber spaced from and separate from said first vertical chamber and said second vertical chamber and disposed between said cross passage and said cullet melting vessel, said third vertical chamber being operatively coupled to said outlet of said cullet melting vessel and to a second inlet of said cross passage, wherein said second inlet of said cross passage is located below a free surface of the molten glass or the molten glass precursor flowing through said cross passage. 20. The apparatus set forth in claim 13 including a second melting vessel disposed between said first melting vessel and said inlet of said first vertical chamber, said second melting vessel being operatively coupled to said first melting vessel and said inlet of said first vertical chamber, wherein at least one glass-forming material is received within said second melting vessel and introduced into molten glass or a molten glass precursor flowing from said first melting vessel into said first vertical chamber. 21. A modular apparatus for making glass, including at least two apparatuses as set forth in claim 13, said apparatuses being arranged in parallel and being selectively connectible and disconnectable from one another. 22. The apparatus set forth in claim 13 wherein said cross passage includes a first end, a second end opposite said first end, and an outlet located at an intermediate location between said first and second ends, said outlet of said first vertical chamber being operatively coupled to said first end of said cross passage, said cullet melting vessel being operatively coupled to said second end of said cross passage, and said inlet of said second vertical chamber being operatively coupled to said outlet of said cross passage. 23. An apparatus for making glass including: a first vertical chamber having an inlet adjacent a lower end thereof through which molten glass or a molten glass precursor is received;a second vertical chamber spaced from and separate from said first vertical chamber;a third vertical chamber spaced from and separate from said first vertical chamber and said second vertical chamber and having an inlet adjacent a lower end thereof through which molten glass or a molten glass precursor is received;a cross passage connecting upper ends of said first, second, and third vertical chambers, said cross passage having a first inlet through which at least one solid glass-forming material is received and introduced into the molten glass or the molten glass precursor flowing through said cross passage; anda first melting vessel in the form of an induction heated crucible that receives and melts at least one solid glass-forming material to produce molten glass or a molten glass precursor, said first melting vessel including a dam and being operatively coupled to said inlet of said third vertical chamber such that the molten glass or the molten glass precursor produced in said first melting vessel flows upward through said third vertical chamber and into said cross passage, wherein said dam prevents migration of un-melted glass forming components from said first melting vessel into said first vertical chamber,wherein said second vertical chamber has an inlet at its upper end through which molten glass or a molten glass precursor is received from said first and third vertical chambers and an outlet at a lower end thereof through which molten glass is discharged, andwherein said third vertical chamber has an outlet at its upper end through which molten glass or a molten glass precursor is discharged, said outlet of said third vertical chamber being located below a free surface of the molten glass or the molten glass precursor flowing through said cross passage. 24. The apparatus set forth in claim 23 including a vacuum coupled to said cross passage to assist upward flow of molten glass or a molten glass precursor through said first and third vertical chambers. 25. The apparatus set forth in claim 23 including a rotatable shaft with paddles extending through at least a portion of said second vertical chamber that mixes the at least one solid glass-forming material with the molten glass or the molten glass precursor flowing downward through said second vertical chamber. 26. The apparatus set forth in claim 23 wherein said second vertical chamber includes at least one cross wall that divides said second vertical chamber into a plurality of cells and prevents direct passage of the at least one solid glass-forming material through said second vertical chamber. 27. The apparatus set forth in claim 23 including a second melting vessel in which solid glass forming components are received, melted, and reacted with one another to produce molten glass or a molten glass precursor, wherein said second melting vessel is operatively coupled to said inlet of said first vertical chamber such that the molten glass or the molten glass precursor produced in said second melting vessel is introduced into said first vertical chamber via said inlet of said first vertical chamber. 28. A modular apparatus for making glass, including at least two apparatuses as set forth in claim 23, said apparatuses being arranged in parallel and being selectively connectible and disconnectable from one another. 29. The apparatus set forth in claim 23 wherein said cross passage includes a first end, a second end opposite said first end, and an outlet located at an intermediate location between said first and second ends, said upper end of said first vertical chamber being connected to said first end of said cross passage, said upper end of said third vertical chamber being connected to said second end of said cross passage, and said inlet of said second vertical chamber being operatively coupled to said outlet of said cross passage. 30. An apparatus for making silica-based glass including: a first vertical chamber having an inlet adjacent a lower end thereof through which molten glass is received;a second vertical chamber spaced from and separate from said first vertical chamber;a third vertical chamber spaced from and separate from said first vertical chamber and said second vertical chamber and having an inlet adjacent a lower end thereof through which molten glass is received;a cross passage connecting upper ends of said first, second, and third vertical chambers, said cross passage having a first inlet through which at least one solid glass-forming material is received and introduced into molten glass flowing through said cross passage; anda cullet melting vessel that receives and melts solid cullet to produce molten glass;wherein said second vertical chamber has an inlet at its upper end through which molten glass is received from said first and third vertical chambers and an outlet at a lower end thereof through which molten glass is discharged, andwherein said third vertical chamber has an inlet adjacent a lower end thereof and said cullet melting vessel is operatively coupled to said inlet of said third vertical chamber such that molten glass produced in said cullet melting vessel flows upward through said third vertical chamber and into said cross passage.

이 특허에 인용된 특허 (13)

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Apparatus for melting and refining silica-based glass

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Apparatus for melting and refining silica-based glass

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