| 摘要 |
The device comprises a centrifugal compressor which sends compressed air to at least one injector (20) placed upstream of the neck (16) of a convergent-divergent (venturi), so as to entrain the surrounding air by Venturi effect. The convergent-divergent may itself be of flattened shape, but it is preferable to group a plurality of parallel convergent-divergents (14) along a line parallel to the maximum elongation of the cross-section of the air flow to be created. The device comprises blower panels (7), with box structure, through which the convergent-divergents penetrate in leaktight fashion. The internal volume of the box (7) constitutes a compressed air manifold (collector) connected, on the one hand, to the compressor and, on the other hand, to the injectors (20) via ducts (21, 22, 23). <IMAGE> |
