| 摘要 |
PURPOSE:To provide a smoke discharging machine wherein self-cooling wind is rendered into clean air therby to remove causes for roughening the surfaces of the commutator of a motor and locking the bearing to prolong the life of the machine. CONSTITUTION:In a smoke discharging machine having a self-cooling fan, a self-cooling wind filter 13 is fitted in a self-cooling wind suction part 8, whereby contaminated air at the welding spot is filtrated by the self-cooling filter 13 and sucked up by a motor 9 or the like. |
