| 摘要 |
PCT No. PCT/SE85/00053 Sec. 371 Date Oct. 8, 1985 Sec. 102(e) Date Oct. 8, 1985 PCT Filed Feb. 5, 1985 PCT Pub. No. WO85/03498 PCT Pub. Date Aug. 15, 1985.A device for acting on or treating surfaces by a medium, preferably air, which is supplied to the device via one or several inlets and is sucked away through one or several outlets. The device comprises at least one vortex chamber (10) whose inner envelope surface (11) is so designed that the medium entering through the inlets (20) is circulated in the chamber and acts on the treatment surface (13) through an opening (12) provided in the envelope surface (11) and directed to the treatment surface (13). The axis (17) about which the medium is circulated is parallel to the treatment surface (13). |
