| 摘要 |
PURPOSE:To enable sending out of dustless hot air, by providing a multi-step combustion chamber and a dust-collecting chamber in a specific structure. CONSTITUTION:Solid fuel supplied from a fuel tank 8 is distributed evenly in a radial direction by a roofing material 19 and come down within a combustion chamber 11. Air is fed within a first air chamber 16 from an air delivery pipe 17 and blown off within the combustion chamber 11 through a first vent hole 14 of a first partition body, through which combustion of the solid fuel is assisted. Then the air is blown off within a second air chamber 21 through a second vent hole 22 of a second partition body 20 in hot air. In addition to the above, the hot air flows out into a secondary combustion chamber 27 from a blow-off port 28. Air is fed into a first dust collecting chamber 30 with pressure through a secondary air blast pipe 31, blown off into the secondary combustion chamber 27 through a gap of a roaster 29 and unburnt dust in the hot air is burnt. Ash contents generated through combustion and remained through a matter that dust collection is unable to complete into the first dust collecting chamber 30 are collected into a second dust collecting chamber 37 through a dust collecting port 38. The hot air not including the ash contents is discharged through a hot air discharge pipe 36 like this.
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