| 摘要 |
PROBLEM TO BE SOLVED: To provide a regenerative burner capable of sufficiently reducing an amount of emission of nitric oxide.SOLUTION: A regenerative burner comprises: an air discharging part A formed between an outer cylinder 1 and an inner cylinder 2 concentrically arranged to discharge combustion air heated at a heat storage part 3; and a fuel discharging part G arranged at an inside part of the inner cylinder 2 to discharge fuel gas in an air discharging direction where the air discharging part A discharges combustion air. The extremity end part Af of the air discharging part A is protruded more forward in the air discharging direction than the extremity end Gf of the fuel discharging part G, a fuel dispersion space S enclosed by the extremity end Gf of the fuel discharging part G and an inner surface of the extremity end part Af protruded more forward side in the air discharging direction than the fuel discharging part G at the air discharging part A is formed, and the regenerative burner also comprises an air guide cylinder W of which diameter becomes small as it approaches the extremity end for radially and inwardly guiding combustion air discharged from the extremity end at the air discharging part A. |
