摘要 |
<p>The nozzle has arrangements capable of blowing air in two flows, so as to stabilize the blown air to collect pollution diffused in the air and to direct the pollution to a treatment unit. The air flows are parallel and have different speeds, where the nozzle is in communication with an enclosure (2) having pressure higher than external atmospheric pressure, and the enclosure is supplied with pulsated air. The nozzle is shaped in section to delimit two channels, so as to create two flows, where the section of the nozzle delimits two jointed blowing lips.</p> |