| 摘要 |
An arrangement for generating an air flow and cleaning the air with the aid of an electric ion wind, this arrangement including a corona electrode (K) and a target electrode (M) spaced from the corona electrode, and in which each electrode is connected to a respective pole of a direct voltage source (1) whose voltage is such as to generate a corona discharge on the corona electrode (K). The target electrode (M) has essentially the form of an obtuse cone or has a generally spherical form and has distributed therein a plurality of air through-flow openings (3), whereas the corona electrode (K) has the form of a wire-like electric element which extends along the symmetry axis of the target electrode (M) so as to be generally equidistant from all parts of the target electrode. The target electrode (M) may advantageously be provided with a large, circular, central opening (10) centrally opposite the corona electrode (K). The target electrode (M) advantageously comprises a plurality of flat, thin, ring-shaped electrode elements of mutually different diameters which are arranged parallel with one another such as to define interspaces (3) in planes at right angles to the symmetry axis of the target electrode (M). A reflector electrode (R) may be positioned at a distance from the target electrode (M) on the opposite thereof relative to the corona electrode (K) and is connected to a potential of the same polarity relative to the target electrode (M) as the corona electrode (K). |
