EXTRACTION DEVICE

Abstract

A static-mechanical extraction device (10) for the evacuation of stale air, comprising an upper element (100) and a lower element (20) rigidly fixed to each other and separated from each other along a longitudinal axis (Z1) so as to define a free space (11) between them, the device further comprising a conduit (14) passing through the lower element (20) and opening into the free space (11), the upper element (100) comprising a cavity (140) in which is housed a centrifugal turbine (30) with axis along the longitudinal axis (Z1), characterized in that the cavity (140) comprises: - one or more air inlet openings (141) communicating into the free space (11); and one or more air outlet openings (142) communicating with the free space (11), each air outlet opening (142) being arranged radially outside said one or more air inlet openings (141) with respect to the longitudinal axis (Z1). Figure 3

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