| 摘要 |
There is described an air flow apparatus (20) comprising, a housing (21) having an inlet (22) and an outlet (23) and a controller (24) for controlling the flow of air flowing through the housing (21) from the inlet (22) to the outlet (23). A sensor (32) is provided for sensing the flow rate of air flowing through the housing (21) and generating a signal (34) indicative thereof. The controller (24) is arranged to control the flow rate of the air through the housing (21) in dependence upon the sensor output. |
