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(11) | EP 1 887 286 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Improvement in the ventilation arrangement of a fume extraction hood |
(57) A fume extractor hood comprises a planar horizontal top member adapted to collect
vapours and gases flowing up from a worktop, such as a cooktop, extending therebelow,
a suction conduit that is open in the middle region thereof, first suction means associated
to said suction conduit, ventilation means adapted to impart a whirling motion about
a vertical axis to the mixture of air and other gases contained inside a cylindrical
member, wherein said ventilation means comprise an internally hollow cylindrical member
extending vertically downwards, a perpheral edge of which is placed on the outer edge
of said planar horizontal top member, and a plurality of outflow channels distributed
over the internal cylindrical wall of said cylindrical member, these channels being
oriented vertically and provided with a plurality of respective outflow ports; such
outflow ports are oriented so that the respective air flows are directed in a horizional
direction and with a limited inclination relative to the tangent to the circumference
of the cylindrical member.
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