| 摘要 |
The present invention provides a ventilating apparatus that comprises blower fans and filters, wherein, even if the filters become clogged, it is possible to prevent the operation of the blower fans from overloading and to prevent, as much as possible, the amount of ventilation from decreasing. A ventilating apparatus (1) comprises blower fans (4, 5), filters (6, 7), which collect dust and the like contained in air flows generated by the blower fans (4, 5), and a control unit (8) that uses a time input value (ts), which is for outputting a filter sign to a reporting unit (9), to increase a target rotational speed (ns) of the blower fans (4, 5) with a prescribed frequency. |
