| 摘要 |
<p>A smoke extraction apparatus consists essentially in a structural shape of a type of a molding plane given to the exterior wall of the footing (2), which forms the common base element of the static module and of the dynamic module. The dynamic module can be indiscriminately associated to the footing (2) according to the climatic conditions of the location or according to the desired level of underpressure, wherein the dynamic module is formed by a ferrule (15) made of a lower cylindrical part (16), which lower cylindrical part (16) extends in the upward direction in a truncate-cone part (17), where the truncated-cone part (7) ends in a turned-down exterior edge (18). The ferrule (15) is also formed surrounding the turbine (13) and is surmounted by the truncated-cone muffle (19), where the small base of the truncated-cone muffle (19) is extended upwardly in a neck (21), which neck (21) surrounds the electric motor (14), where the electric motor (14) keeps the turbine (13) in motion.</p> |
