(57) A fume extractor hood comprising, an upper planar horizontal member adapted to capture
and collect vapours and gases flowing up from a cooktop lying therebelow, where the
vapours and fumes to be extracted are generated, a suction conduit that is open in
the middle region of the upper planar horizontal member, first suction means associated
to the suction conduit and adapted to suck in the fumes and vapours therefrom and
blow them outside, wherein such means comprise a suction fan associated to the conduit,
ventilation means adapted to impart a whirling motion about a vertical axis (X) to
the mixture of air and other gases contained in the volume below the upper planar
horizontal member. The ventilation means comprises: an internally hollow cylindrical
member, a peripheral edge of which is placed onto the outer edge of the upper planar
horizontal member, and which extends vertically downwards from the upper planar horizontal
member without reaching the level of the cooktop or simuilar surface lying therebelow.
The ventilation means also comprises a plurality of outflow channels distributed over
the internal cylindrical wall of the cylindrical member, these outflow channels being
oriented vertically and being each provided with at least one outflow port. The cylindrical
member has a substantially octagonal shape, and each of the outflow channels is positioned
in correspondence to a respective corner of the cylindrical member.
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