| 摘要 |
PURPOSE: To realize the reduction of weight of a device, improvement of concentration of flame and low NOx combustion at the same time. CONSTITUTION: A fuel direct injection system burner is provided with a heat storage unit 1 in furnace wall, which penetrates a furnace wall 14, communicated with the outside 13 of the furnace wall and equipped with a heat storage chamber 16, filled with heat storage body 15 in the furnace wall 14. An injection port 22, injecting high-temperature preheated air into a furnace 11 and sucking exhaust gas in the furnace 11 to recover it, is provided at the tip end unit 21 of the heat storage unit 17 in furnace wall while an introducing passage 23, sending fuel gas into the furnace 11, is formed in the furnace wall 14 near the heat storage unit 17 in the furnace wall. An injection port 22 is provided with a circular or slit shape or constituted so as to be used also for a pushing plate retaining the heat storage body 15. On the other hand, most of the injection ports 22 may also be provided at positions apart from the tip end of the introducing passage 23 and a part of them are provided at positions approximated to the tip end of the introducing passage 23 thereby air diverting system, improving the concentration of flame may also be employed. |
