SOOT AND DUST ELIMINATING DEVICE

PROBLEM TO BE SOLVED: To grow up fine soot and dust so as to easily catch them by providing an intake passage for leading the exhaust, which includes the soot and dust, into a diffusion chamber for diffusing the exhaust, and providing a blow-down means for discharging the exhaust downward, and forming an exhaust passage for discharging the exhaust into the air of the upper part, and providing a filter between the diffusion chamber and the exhaust passage. SOLUTION: Exhaust flowing in a duct 18 enters a diffusion chamber 15 through a bent pipe 7 so as to be discharged downward. The exhaust is thus diffused for turbulent and the flowing speed is so remarkably lowered, so that the soot and dust in the exhaust are floated for long time inside of the diffusion chamber 15, repeat suction and connection mutually in the high temperature atmosphere, gradually grown up, enlarged less fine and so heavier, naturally fallen, and deposited on the bottom of the diffusion chamber 15. Fine soot and dust, while floating, are adhered to a filter 9. The soot and dust grown up on the filter 9 by mutual adhesion and connection are made heavier and fallen on the bottom of the diffusion chamber 15. When the soot and dust deposited on the bottom of the diffusion chamber 15 are increased in quantity, a cover 12 is opened and the soot and dust are taken out of a cleaning port 11.