GAS WARM AIR HEATER EQUIPPED WITH AIR CLEANER

摘要

PROBLEM TO BE SOLVED: To improve dust collection efficiency keeping compactness as a gas warm air heater. SOLUTION: There are provided doubly a combustion filter for removing slightly large dust in air sucked with a convection fan 20 and an air cleaning filter 23 for removing micron-sized dust and smoke of a cigarette in air on an air passage part for air sucked with the convection fan 20. Upon air cleaning operation the air cleaning filter 24 is brought into close contact with a back plate 29, and dust collection efficiency of 70% or more is ensured with a filter composed of the air cleaning filter 23 and the combustion filter provided doubly. Upon operation of the gas warm air heater the air cleaning filter 23 is rotated around a hinge 25 as a rotary shaft, and air necessary for combustion of gas from a gap (c) between the air cleaning filter 23 and th back plate 29.