| 摘要 |
<p>The device comprises a duct (15) which connects the inside of the chamber (14) to the outside environment and is shaped so as to form two siphons (16,17) arranged in series, a first siphon (16), located towards the chamber (14), having a higher head than a second siphon (17), located towards the outlet (18) of the duct (15) into the outside environment, the device further comprising elements (22) for absorbing the moisture of the air contained in the portion of duct (21) between the siphons (16,17). <IMAGE></p> |
