| 摘要 |
A particle separating arrangement comprises a filter tube (1) that is made of electrostatically chargeable fibres, for instance electrete fibres, and through which an axial air stream can pass radially in a direction from within outwardly. Within the tube (1) an insert (2) is placed, comprising a carrier (3) which extends transversely to the tube, said carrier having a plurality of strip elements (4) arranged to be set in motion by the passing air stream and thereby be rubbed against each other in order to produce an electrostatically charged field in their environs. This field is used to automatically and continuously keep the chargeable fibres in the filter tube wall (1) electrostatically charged.
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