Patent ID: 9221710
Filing Date: 2015-12-29
Classification: C03B,Y02P

Abstract:
1. A glass fine particle synthesis burner that is supplied with a glass raw material gas, a combustible gas, and a combustion aiding gas and blows glass fine particles refined in a flame to deposit the glass fine particles on a starting member, the glass fine particle synthesis burner comprising: a glass raw material gas emission path for emitting glass raw material; a ring-shaped combustible gas emission path for emitting combustible gas arranged outside the glass raw material emission path; a ring-shaped combustion aiding gas emission path for emitting combustion aiding gas arranged outside the combustible gas emission path; and small diameter nozzles for emitting the combustion aiding gas within the combustible gas emission path, wherein in a cross section of the glass fine particle synthesis burner formed by cleaving orthogonal to a central axis thereof, when the glass fine particle synthesis burner is divided into two regions by a predetermined straight line passing through a center of the glass fine particle synthesis burner, a total area of the small diameter nozzles in one of the regions is greater than a total area of the small diameter nozzles in the other region, and in the cross section of the glass fine particle synthesis burner formed by cleaving vertically through the central axis thereof, positions of the small diameter nozzles arranged within a combustible gas region do not have rotational symmetry such that the positions of the small diameter nozzles become the original positions only when the glass fine particle synthesis burner is rotated by n×360°, where n is an integer.