OXYGEN-ENRICHED BURNER AND HEATING METHOD USING OXYGEN-ENRICHED BURNER

• Main Authors: SAITO TAKESHI, KIYONO NAOKI, HAGIWARA YOSHIYUKI, YAMAMOTO YASUYUKI
• Format: Patent
• Language: English; Japanese
• Published: 31.01.2019
• Subjects: AIR SUPPLY; BLASTING; BURNERS; COMBUSTION APPARATUS; COMBUSTION PROCESSES; DRAUGHT-INDUCING; HEATING; LIGHTING; MECHANICAL ENGINEERING; SUPPLYING NON-COMBUSTIBLE LIQUID OR GAS; WEAPONS

To provide an oxygen-enriched burner and a heating method using such a burner each of which allows for uniform heating of an object to be heated present even at a position distant from the burner with excellent heat transfer efficiency, when heating the object to be heated with self-excited oscillating frame.SOLUTION: The oxygen-enriched burner comprises a plurality of fluid spray port each of which: a central fluid spraying port 2; and a pair of first peripheral fluid spraying ports 3A and a pair of second peripheral fluid spraying ports 3B, each pair being arranged around the central fluid spraying port in a direction in which they are opposed to and orthogonal to each other. A pair of openings are provided in side walls 41 of a fluid spray flow path 4 located upstream of the central fluid spraying port 2. Clearance between a pair of side walls located downstream of the openings are gradually increased toward the downstream side, the pair of second peripheral fluid spraying ports 3B are arranged in such a manner that the central fluid spraying port 2 is interposed therebetween in a direction orthogonal to the opposing direction of the opening. An angle γ° between the center axis of the central fluid spraying port 2 and the center axis of the second peripheral fluid spraying ports 3B, an outlet width D1 between the side walls 41 of the central fluid spraying port 2, and an outlet width D2 in a direction along the outlet width D1 in the second peripheral fluid spraying ports 3B establish a predetermined relationship.SELECTED DRAWING: Figure 1 【課題】自励振動火炎で被加熱物を加熱する際、バーナから離れた位置でも優れた伝熱効率で均一な加熱が可能な酸素富化バーナ及び加熱方法を提供する。【解決手段】中心流体噴出口２と、その周囲にそれぞれ対向して直交する方向で配置される一対の第１周囲流体噴出口３Ａ及び一対の第２周囲流体噴出口３Ｂを備え、中心流体噴出口２の上流側の流体噴出流路４の側壁４１に一対の開口部が設けられ、開口部よりも下流側の一対の側壁の間隔が下流側に向かって漸次拡開し、一対の第２周囲流体噴出口３Ｂは開口部の対向方向と直交して中心流体噴出口２を挟み込むように配置され、中心流体噴出口２の中心軸と第２周囲流体噴出口３Ｂの中心軸との角度γ°、及び、中心流体噴出口２の側壁４１間の出口幅Ｄ１と第２周囲流体噴出口３Ｂにおける出口幅Ｄ１に沿った方向の出口幅Ｄ２とが所定の関係とされる。【選択図】図１