Conduit for molten glass, molten glass degassing method and molten glass degassing apparatus
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C03B-005/225
C03B-005/00
출원번호
US-0066489
(2005-02-28)
등록번호
US-7377132
(2008-05-27)
우선권정보
JP-2002-381106(2002-12-27)
발명자
/ 주소
Hamashima,Kazuo
Hirahara,Yasuharu
Ito,Hajime
출원인 / 주소
Asahi Glass Company, Limited
대리인 / 주소
Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
인용정보
피인용 횟수 :
4인용 특허 :
3
초록▼
A conduit for molten glass, a molten glass degassing method and a sub-atmospheric apparatus are provided, which are able to produce homogenous and good quality glass at low cost. A conduit for molten glass, which is capable of flowing molten glass in a horizontal direction, and to which vertical pip
A conduit for molten glass, a molten glass degassing method and a sub-atmospheric apparatus are provided, which are able to produce homogenous and good quality glass at low cost. A conduit for molten glass, which is capable of flowing molten glass in a horizontal direction, and to which vertical pipes are connectable, is disposed in a substantially horizontal direction. The conduit for molten glass can increase the area of a free surface of the molten glass by setting a width W at a larger value than a height H in cross-section and having an outline in cross-section comprising a convex curve. When the conduit for molten glass thus configured is used as a sub-atmospheric apparatus, it is possible to degas the molten glass effectively. Additionally, it is possible to have a sufficient strength since the convex curve forming the cross-section is elliptical. Further, it is possible to reduce costs by decreasing the amount of metal required for forming the cross-section.
대표청구항▼
What is claimed is: 1. A conduit for molten glass, comprising: a metal conduit, which causes molten glass to flow in a horizontal direction while having a free surface, said conduit having a width W set to be larger than a height H in cross-section and having an outline comprising a convex curve in
What is claimed is: 1. A conduit for molten glass, comprising: a metal conduit, which causes molten glass to flow in a horizontal direction while having a free surface, said conduit having a width W set to be larger than a height H in cross-section and having an outline comprising a convex curve in cross-section, said conduit including portions which have cross-sectional sizes which change in an axial direction. 2. The conduit for molten glass according to claim 1, wherein a ratio of the width H to the height H ranges from 1.1 to 1.7. 3. The conduit for molten glass according to claim 2, wherein the convex curve is elliptical. 4. The conduit for molten glass according to claim 1, including convex and/or concave portions located in a periphery of said conduit, formed continuously for 360 degrees about a circumferential direction, thereby changing said cross-sectional shape of said conduit. 5. The conduit for molten glass according to claim 1, said conduit comprising platinum or a platinum alloy. 6. The conduit for molten glass according to claim 5, the platinum or the platinum alloy comprises a dispersion-strengthened alloy. 7. The conduit for molten glass according to claim 1, said conduit having a wall thickness ranging from 0.4 to 1.6 mm. 8. The conduit for molten glass according to claim 1, wherein said conduit is used for a sub-atmospheric apparatus. 9. A molten glass degassing method, comprising: flowing molten glass in a horizontal direction in a metal conduit while the molten glass has a free surface, and maintaining an ambient pressure on the free surface at from 0.08 to 0.5 atm, thereby degassing the molten glass, said metal conduit comprising the conduit for molten glass as claimed in claim 1. 10. A molten glass degassing apparatus, which causes molten glass to flow in a horizontal direction in a metal conduit while the molten glass has a free surface, and maintains an ambient pressure on a free surface thereof of from 0.08 to 0.5 atm, thereby degassing the molten glass, said metal conduit comprising the conduit for molten glass as claimed in claim 1.
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이 특허에 인용된 특허 (3)
Chevallier ; Francois E. ; Fenouillet ; Jean M. P., Method for the manufacture of glass.
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