| 摘要 |
PCT No. PCT/EP97/02384 Sec. 371 Date Dec. 3, 1998 Sec. 102(e) Date Dec. 3, 1998 PCT Filed May 9, 1997 PCT Pub. No. WO97/46797 PCT Pub. Date Dec. 11, 1997An air flow device in which there are adjusters in the flow path to alter the flow geometry of the air. The total cross section of the flow path is divided into individual flow channels (15, 16, 17) or tube sections (1, 3, 4) one inside the other, and there are mechanisms or adjusters (13, 14) by which the flow paths in the individual flow channels (15, 16, 17; 1, 3, 4) can be controlled. In a preferred embodiment there are three flow channels (15, 16, 17) the ends of which are connected to an internal aperture (22 to 27) in the adjusters (13, 14).
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