| 摘要 |
PCT No. PCT/SE88/00038 Sec. 371 Date Aug. 7, 1989 Sec. 102(e) Date Aug. 7, 1989 PCT Filed Feb. 4, 1988 PCT Pub. No. WO88/05972 PCT Pub. Date Aug. 11, 1988.An arrangement for transporting air with the aid of so-called electric ion wind with an air flow duct (1) in which a corona electrode (K) and a target electrode (M) are arranged in mutually axial spaced relationship, with the target electrode located downstream of the corona electrode. The corona electrode and the target electrode are each connected to a respective terminal of a d.c. voltage source (3), the voltage of which is such as to engender an air-ion generating corona discharge at the corona electrode. Arranged opposite the corona electrode on, or closely adjacent the wall of the air flow duct (1) are electrically conductive surfaces (4), which are connected to a potential which lies between the potential of the corona electrode (K) and the potential of the target electrode (M) and which is selected so that the potential difference between the electrically conductive surfaces (4) and the corona electrode (K) is as large as possible without any substantial part of the corona current passing to the surfaces (4). When the corona electrode has a plurality of mutually parallel and mutually adjacent wire-like electrode elements, further electrically conductive surfaces (5) may be provided between mutually adjacent wire-like electrode elements of the corona electrodes. These further electrically conductive surfaces (5) are electrically connected to the first mentioned electrically conductive surfaces (4) and extend parallel with the electrode elements and with the longitudinal extension of the duct (1).
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