| 摘要 |
PURPOSE: A venturi-shaped low nitrogen oxide burner is provided to form a stable flame regardless of the temperature condition of combustion exhaust gas by lowering the speed of an air classification, to suppress the generation of nitrogen oxide by maximizing the amount of combustion exhaust gas sucked up to the air classification for combustion, and to secure stable flames and reduce pollutants. CONSTITUTION: A venturi-shaped low nitrogen oxide burner is composed of the inside of a burner body(1) formed in a venturi shape of which an inlet port(21), a venturi nozzle(22), and an expanded pipe(23) are successively connected, a fuel pipe(2) and an air pipe(3) penetrating the center of the inlet port, the mixed air of injected fuel(9) and air for combustion passed through the venturi nozzle and injected to the expanded pipe, and an exhaust gas intake pipe(13) sucking in combustion exhaust gas(7) from the front of the burner body to the inlet port. Combustion flames(8) are formed by mixed air of which the flow rate is reduced in passing through the expanded pipe, and combustion exhaust gas is sucked by pressure drop generated in the mixed air passing through the venturi nozzle.
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