| 摘要 |
PURPOSE:To always clean a filter by providing a fan mounted in an exhaust port, a rotatable filter mounted in front of the fan, and fan and filter driving means. CONSTITUTION:The air in a room is evacuated through a filter 7 by the rotation of a fan 3a. When, oil, dusts are adhered to the filter 7, the filter 7 is rotated by a driver 6 as required or at each predetermined time. Oil, dusts scattered by a centrifugal force are received by a waste receiver 8, fed to a pipe 9, and collected to a waste reservoir 10. When the driver 6 is driven, a driver 5a for the fan 3a is also driven to prevent offensive odor of the waste generated when the filter 7 is rotated from diffusing in the room or the scattered waste from dropping in the room. A sensor 15 for detecting the contamination degree of the filter 7 is provided to confirm the degree of the filter 7 by a controller to drive the driver 5 or to automatically clean the filter 7 by adding a heater to the filter 7, thereby always supplying a clean filter. |
