| 摘要 |
<p>The device comprises a tube (1) with perforations (2), arranged in a blind hole (4) cut in a wall and supporting an inner concentric tube (7) with a solid wall. The space (9) between the two tubes is used to blow a current of air through, restricted at the inlet (11), undergoing a reduction in loading within the circuit, thus generating a depression which pumps humidity from the wall (5) and expels the same through the centre (10) of the tube (7). The above may be adapted to any thickness of wall by the provision of extensions (12).</p> |
