| 摘要 |
<p>A suction mouth piece device (1) comprising an extraction duct (4) and at least one side channel (10, 12) projecting outwards from the extraction duct (4), where the side channel (10, 12) is provided with an elongated inlet slot (18), and where the inlet slot (18) is arranged tangentially relative to the cross section of the side channel (10, 12) , whereby fluid that is drawn into the side channel (10, 12) through the inlet slot (18) assumes a rotating flow pattern.</p> |
