| 摘要 |
The carrying and air conducting structure (2) is formed by a single part (2) of stiff material, which essentially has C shape. It is provided with two endpieces (2a,2b), lying opposite each other, between which the fan wheel (3) is located, and at one endpiece (2a) an electric motor (4) is fixed connected with the fan wheel (3). The construction (2) in addition has an intermediate piece (2c) in the shape of a curved wall. The distance (d) of which from the axis (A-A) of rotation of the fan wheel, gradually grows in the rotation direction (F) of the fan wheel (3), and itself, extends from the endpieces of the construction (2), one piece designed fixing flange or bracket (20,21), which facilitate the fixing of the fan (1) at an outer carrying construction.
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