| 摘要 |
<p>The axial-flow main fan (3) is accommodated in a housing (1) with air inlet and outlet ports, together with one or more energy converters (2). The main fan is equipped to accommodate one or more additional axial-flow fans (7), through which the air subsequent flows. The additional fan can comprise a holder and air guide (8) consisting of a tuber and flanges. This is secured by screws engaging in its flange to the main fan without the need to dismantle the latter. An electrical socket and plug can be provided, avoiding the need for interference with the wiring system.</p> |
