Title:
溶融ガラスの導管構造とそれを備えた減圧脱泡装置および溶融ガラスの減圧脱泡方法とガラス製品の製造方法
Document Type and Number:
Japanese Patent JP5817726
Kind Code:
B2
Abstract:
It is an object of the present invention to provide a conduit structure for molten glass, whereby even if molten glass is flown for a long time through a double-pipe structure portion comprising an inner pipe and an outer pipe joined together, stress load is little. The present invention provides a double pipe structure comprising an inner pipe and an outer pipe, wherein a supporting rib is provided between the inner pipe and the outer pipe to bridge the inner pipe and the outer pipe;
wherein the supporting rib has an inner straight portion joined with the outer face of the inner pipe so as to extend along the longitudinal direction of the inner pipe, an outer straight portion joined with the inner face of the outer pipe so as to extend along the longitudinal direction of the outer pipe, and a connecting wall portion extending from the inner straight portion to the outer straight portion to integrate them; and
the supporting rib has a concave portion along each of one side edge of the connecting wall portion present between one side end portion of the inner straight portion and one side end portion of the outer straight portion, and the other side edge of the connecting wall portion present between the other side end portion of the inner straight portion and the other side end portion of the outer straight portion, and reaching both side end portions of the respective straight portions via rounded portions, and the supporting rib has projecting portions formed on respective ends of the inner straight portion and respective ends of the outer straight portion.
Inventors:
Takahiro Nagata
Miyoshi Wataru
Hajime Ito
Hiroaki Hamamoto
Michito Sasaki
Miyoshi Wataru
Hajime Ito
Hiroaki Hamamoto
Michito Sasaki
Application Number:
JP2012527723A
Publication Date:
November 18, 2015
Filing Date:
July 29, 2011
Export Citation:
Assignee:
Asahi Glass Co., Ltd.
International Classes:
C03B5/42; C03B5/225
Domestic Patent References:
| JP2006132653A | 2006-05-25 | |||
| JP2004270928A | 2004-09-30 |
Foreign References:
| WO2008026606A1 | 2008-03-06 |
Attorney, Agent or Firm:
Sumio Tanai
Masatake Shiga
Suzuki Mitsuyoshi
Noriko Yanai
Masatake Shiga
Suzuki Mitsuyoshi
Noriko Yanai