| 摘要 |
PURPOSE:To bring a mixture of kerosence particles, air and a circulating combustion gas close to a theoretical air ratio, and to obtain ideal blue flame combustion by setting the velocity of flow of ejection air for sucking the quantity of the circulating combustion gas required. CONSTITUTION:A high-speed air ejecting plate 5 installed to an opening section at the nose of the blast pipe 4 of the outer circumference of a nozzle 2 ejecting liquid fuel in a fog-shaped particle form has a central ejecting hole 6 ejecting fuel and air and a plurality of air ejecting holes 7. A flame stabilizing section 9 of multitubular structure is mounted in front of the nose of the blast pipe at an interval (l). An inflow port 10 for a circulating gas is formed between both cylinders by the interval (l). When the size of the blast pipe 4 is decided to be 80mm.phi, it is necessary that the interval (l) is kept within a range of 8-20mm. in order to continuously supply the hot water of 35,000kcal/h, and an optimum value is 15mm..
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