| 摘要 |
PROBLEM TO BE SOLVED: To provide a ventilating unit capable of effectively removing dust of a filter following original ventilation operation of the ventilating unit without additionally providing an excitation means for applying external force to the filter. SOLUTION: In the ventilating unit 1 sucking in outside air from outdoors and supplying air indoors, by matching a rotational frequency of a ventilation fan 6 applying vibration to the filter 8 for cleaning clogging of the filter 8 with a natural frequency regarding the filter 8, and causing a resonance phenomenon even without increasing power applied with respect to excitation, a vibration level of the filter 8 is amplified, and dust attached to the filter 8 can be effectively removed. COPYRIGHT: (C)2008,JPO&INPIT |
