| 摘要 |
<p>An arrangement in a swirl chamber suction nozzle device furnished with a swirl chamber (1) and transportable on a surface to be cleaned, where the swirl chamber (1) is restricted with a cylindrical mantle construction (8) with end walls attached to it, the swirl chamber still being open in regard to the surface to be cleaned and the nozzle device comprising a blast arrangement (3, 7) for conveying blast air to chamber (1) in order to produce a swirl flow and furthermore an arrangement (6) to convey air out from the swirl chamber. In the arrangement the swirl chamber (1) end wall has an opening (2) enabling air flow between fresh air and chamber (1) internal parts.</p> |
