| 摘要 |
The ventilation unit (1) has an electric motor (4), the output shaft (5) of which is fitted with a fan (3) having a cup-shaped central body (11) and a number of blades (15). The central body (11) is defined by a base wall (12), and by an annular wall (13) form whose outer face the blades (15) extend. And the main characteristic of the present invention lies in through windows (25) being formed in the annular wall (13) of the central body (11) to channel out, in use, any condensate formed inside the central body (11).
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