BURNER FOR EXHAUST GAS PURIFICATION DEVICES

摘要

A burner for exhaust gas purification devices comprising: a pipe section comprising a premixing chamber for mixing combustion air and fuel and generating a premixed air, a combustion chamber for combusting the premixed air and generating combusted gas, and a discharge port for discharging the combusted gas; an air supply port for supplying combustion air to inside the pipe section; a fuel supply port for supplying fuel to inside the pipe section; and an ignition section for igniting the premixed air inside the combustion chamber. The pipe section also comprises: a rotation flow generation section provided on the upstream side of the premixing chamber and which generates a rotation flow having the rotation center direction thereof corresponding to the fuel spray direction; and a diffusion section provided inside the premixing chamber and further on the downstream side than the rotation flow generation section, and which diffuses the fuel that has been drawn into the rotation flow.