Burner modules, methods of forming glass sheets, and glass sheets formed thereby
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C03B-019/06
C03B-019/14
출원번호
US-0484466
(2012-05-31)
등록번호
US-8857216
(2014-10-14)
발명자
/ 주소
Geremew, Muluwork
Hawtof, Daniel Warren
Noni, Jr., Douglas Miles
출원인 / 주소
Corning Incorporated
대리인 / 주소
Russell, Michael W
인용정보
피인용 횟수 :
1인용 특허 :
9
초록▼
A burner module comprising a burner gas inlet block, a lower flow plate, an upper flow plate, a burner gas flow disperser, and a burner gas discharge block. The burner gas inlet block, the burner gas flow disperser, and the burner gas discharge block each comprising a plurality of channels separated
A burner module comprising a burner gas inlet block, a lower flow plate, an upper flow plate, a burner gas flow disperser, and a burner gas discharge block. The burner gas inlet block, the burner gas flow disperser, and the burner gas discharge block each comprising a plurality of channels separated by partitions. The partitions of the burner gas flow disperser and the burner gas discharge block comprising a knife edge. The upper flow plate and the lower flow plate each comprising a plurality of pressure holes in fluid communication with the plurality of channels. Additionally, the method of forming a glass sheet or ribbon using the disclosed burner module and a glass sheet or ribbon formed using the method.
대표청구항▼
1. A burner module comprising a burner gas inlet block, a lower flow plate, an upper flow plate, a burner gas flow disperser, and a burner gas discharge block, wherein: the burner gas inlet block comprises a plurality of gas inlets disposed on a base of the burner gas inlet block and a plurality of
1. A burner module comprising a burner gas inlet block, a lower flow plate, an upper flow plate, a burner gas flow disperser, and a burner gas discharge block, wherein: the burner gas inlet block comprises a plurality of gas inlets disposed on a base of the burner gas inlet block and a plurality of gas inlet channels separated by gas inlet channel partitions, the gas inlet channels extending from the gas inlets of the burner gas inlet block to an outlet face of the burner gas inlet block;the burner gas flow disperser comprises a plurality of dispersion channels separated by dispersion channel partitions, the dispersion channels extending from an inlet face of the burner gas flow disperser to an outlet face of the burner gas flow disperser;each of the dispersion channel partitions comprises a knife edge lower flow plate contact surface at the inlet face of the burner gas flow disperser;the burner gas discharge block comprises a plurality of apertures located on a burner face of the burner gas discharge block and a plurality of gas discharge channels separated by gas discharge channel partitions, the gas discharge channels extending from an inlet face of the burner gas discharge block to a plurality of burner face channels, the burner face channels extending from the gas discharge channels to the apertures located on the burner face;each of the gas discharge channel partitions comprises a knife edge upper flow plate contact surface at the inlet face of the burner gas discharge block;wherein the knife edge lower flow plate contact surface and the knife edge upper flow plate contact surface have a hardness in excess of the hardness of the lower flow plate and the upper flow plate;the lower flow plate comprises a plurality of lower flow plate pressure holes separated by lower flow plate lands extending in a longitudinal direction, wherein each of the plurality of lower flow plate pressure holes is in fluid communication with one of the gas inlet channels and one of the dispersion channels;the upper flow plate comprises a plurality of upper flow plate pressure holes separated by upper flow plate lands extending in the longitudinal direction, wherein each of the plurality of upper flow plate pressure holes is in fluid communication with one of the dispersion channels and one of the gas discharge channels; andthe burner module is configured to deliver a combustion gas, an oxidizer, a soot precursor, and an inert gas through the gas inlets, the gas inlet channels, the lower flow plate pressure holes, the dispersion channels, the upper flow plate pressure holes, the gas discharge channels, the plurality of burner face channels, and the plurality of apertures to a combustion site in a chemical vapor deposition process to produce a burner flame in a combustion zone proximate to the burner face. 2. The burner module of claim 1 wherein: the burner module further comprises a combustion gas source, an oxidizer source, an inert gas source, and a soot precursor source;the plurality of gas inlets comprises at least one combustion gas inlet, at least one oxidizer inlet, at least one inert gas inlet, and at least one precursor inlet;the at least one combustion gas inlet provides the combustion gas to the burner module from the combustion gas source;the at least one oxidizer inlet provides the oxidizer to the burner module from the oxidizer source;the at least one inert gas inlet provides the inert gas to the burner module from the inert gas source; andthe at least one precursor inlet provides the soot precursor to the burner module from the soot precursor source. 3. The burner module of claim 2 wherein: the combustion gas source, the oxidizer source, the inert gas source, the soot precursor source, or a subset thereof comprises a mixture of at least two input media selected from the group consisting of the combustion gas, the oxidizer, the soot precursor, and the inert gas. 4. The burner module of claim 1 wherein: the knife edge lower flow plate contact surface and the knife edge upper flow plate contact surface each comprise a knife edge width;the dispersion channel partitions and the gas discharge channel partitions comprise a channel partition width; andthe channel partition width is greater than the knife edge width. 5. The burner module of claim 4 wherein the channel partition width is greater than the knife edge width by at least one order of magnitude. 6. The burner module of claim 4 wherein the knife edge width is approximately 0.005 inches to approximately 0.031 inches. 7. The burner module of claim 4 wherein: the knife edge width is approximately 0.005 inches to approximately 0.031 inches; andthe channel partition width is approximately 0.04 inches to approximately 0.08 inches. 8. The burner module of claim 1 wherein the knife edge lower flow plate contact surface or the knife edge upper flow plate contact surface is a truncated triangular prism. 9. The burner module of claim 1 wherein a seal is formed by the lower flow plate between the knife edge lower flow plate contact surface of the burner gas flow disperser and the outlet face of the burner gas inlet block. 10. The burner module of claim 1 wherein a seal is formed by the upper flow plate between the knife edge upper flow plate contact surface of the burner gas discharge block and the outlet face of the burner gas flow disperser. 11. The burner module of claim 1 wherein the upper flow plate, the lower flow plate, or both comprise at least 150 pressure holes in fluid communication with each of the individual gas inlet channels, the individual dispersion channels, or the individual gas discharge channels. 12. The burner module of claim 1 wherein the upper flow plate, the lower flow plate, or both comprise at least 450 pressure holes in fluid communication with each of the individual gas inlet channels, the individual dispersion channels, or the individual gas discharge channels. 13. The burner module of claim 1 wherein the upper flow plate, the lower flow plate, or both comprise pressure holes with diameters of approximately 0.02 inches to approximately 0.03 inches. 14. The burner module of claim 13 wherein the circular pressure holes in communication with a single channel are disposed along a single line with centers of the pressure holes spaced approximately 0.03 inches to approximately 0.04 inches apart. 15. The burner module of claim 1 wherein the upper flow plate, the lower flow plate, or both comprise pressure holes with diameters of approximately 0.01 inches to approximately 0.03 inches and the pressure holes in communication with a single channel are disposed along at least two lines with the centers of the pressure holes spaced approximately 0.015 inches to approximately 0.030 inches apart along each line. 16. The burner module of claim 1 wherein the burner module further comprises at least two alignment pins configured to position the burner gas flow disperser, the upper flow plate, and the burner gas discharge block in alignment. 17. The burner module of claim 1 wherein the burner module further comprises at least two alignment pins configured to position the burner gas flow disperser, the lower flow plate, and the burner gas inlet block in alignment.
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