US 11,806,781 B2
Submerged entry nozzle
Hiroyasu Niitsuma, Tokyo (JP); Takayuki Matsunaga, Tokyo (JP); Ryota Okazaki, Tokyo (JP); and Keigo Fujita, Tokyo (JP)
Assigned to SHINAGAWA REFRACTORIES CO., LTD., Tokyo (JP)
Appl. No. 17/789,016
Filed by SHINAGAWA REFRACTORIES CO., LTD., Tokyo (JP)
PCT Filed Aug. 7, 2020, PCT No. PCT/JP2020/030452
§ 371(c)(1), (2) Date Jun. 24, 2022,
PCT Pub. No. WO2021/131139, PCT Pub. Date Jul. 1, 2021.
Claims priority of application No. 2019-239381 (JP), filed on Dec. 27, 2019.
Prior Publication US 2023/0058990 A1, Feb. 23, 2023
Int. Cl. B22D 41/52 (2006.01)
CPC B22D 41/52 (2013.01) 3 Claims
OG exemplary drawing
 
1. A submerged entry nozzle, comprising:
a bottomed cylinder having a vertical side face with at least two outlet ports and having an inner side and an outer side, wherein a bottom end of the cylinder is a closed end, and wherein the following expressions are satisfied:
Vi/Vo>1.1  Expression (1) and
Ho/Hi>1.1  Expression (2),
where Vi indicates a vertical opening dimension of each of the at least two outlet ports on the inner side,
Hi indicates a horizontal opening dimension of each of the at least two outlet ports on the inner side,
Vo indicates a vertical opening dimension of each of the at least two outlet ports on the outer side, and
Ho indicates a horizontal opening dimension of each of the at least two outlet ports on the outer side.