US 11,795,099 B2
Furnace gas feeding device, optical fiber production device, and optical fiber production method
Satoshi Yoshikawa, Osaka (JP); and Katsuyuki Tsuneishi, Osaka (JP)
Assigned to SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka (JP)
Appl. No. 16/981,919
Filed by SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka (JP)
PCT Filed Mar. 22, 2019, PCT No. PCT/JP2019/012189
§ 371(c)(1), (2) Date Sep. 17, 2020,
PCT Pub. No. WO2019/182136, PCT Pub. Date Sep. 26, 2019.
Claims priority of application No. 2018-057227 (JP), filed on Mar. 23, 2018.
Prior Publication US 2021/0094867 A1, Apr. 1, 2021
Int. Cl. C03B 37/029 (2006.01)
CPC C03B 37/029 (2013.01) [C03B 2205/91 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A furnace gas supply apparatus configured to supply gas into a drawing furnace, comprising:
a first flow channel introducing gas from a predetermined first gas inlet and to flow the gas from a predetermined first gas outlet toward a gas storage portion; and
a second flow channel introducing the gas stored in the gas storage portion from a predetermined second gas inlet to flow the gas from a predetermined second gas outlet toward a furnace core tube of the drawing furnace,
wherein a cross sectional area of the second flow channel is larger than a cross sectional area of the first flow channel,
wherein the gas storage portion is provided between the predetermined first gas outlet and the predetermined second gas inlet,
wherein an opening position of the predetermined second gas inlet is provided at a position different from an opening position of the predetermined first gas outlet,
wherein the first flow channel includes a plurality of first flow channels, the second flow channel includes a plurality of second flow channels, all of the first flow channels of the plurality of first flow channels have a predetermined first gas outlet, and all of the second flow channels of the plurality of second flow channels have a predetermined second gas inlet, and
wherein the predetermined second gas inlet of all of the second flow channels of the plurality of second flow channels is provided at a position not opposing the predetermined first gas outlet of all of the first flow channels of the plurality of first flow channels.