| 摘要 |
PURPOSE:To enhance exhaust efficiency by installing a filter adjacently upstream from a fan with respect to the air flow passing through the fan. CONSTITUTION:The filter 4 is installed adjacently upstream from the fan 3 with respect to the air flowing through the fan 4. The air delivered by rotation of the fan 3 is exhausted directly out of the device and since it undergoes no resistance, exhaust efficiency is enhanced. Since the filter 4 and the fan 3 are housed in one body in a unit 5, it is freely dismountable from the main body 1 of the device, thereby inspection and cleaning in the exhaustion device is made easy. |
