Fabric sheath for ventilation and laminar flow hood

F - Mech Eng,Light,Heat,Weapons – 24 – F

Patent

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Details

F24F 9/00 (2006.01) F24F 3/16 (2006.01) F24F 13/06 (2006.01)

Patent

CA 2252937

The invention discloses a fabric sheath (1) for the close protection of sensitive products conveyance by sterilised air stream diffusion, in particular in a substantially vertical direction. It is formed by a sealed wall (2) and a porous wall (3) extending longitudinally and axially along the sheath, the said sheath defining a sterilised air supply duct (9). It is characterised in that it comprises a means (4) extending longitudinally along the said sheath ensuring median sterilised air diffusion at a slow speed, and, on all sides, lateral sterilised air diffusion at a higher speed. The invention also features a washable or disposable laminar flow hood comprising a fabric sheath bounded at each end by a plane perpendicular to the axis of the fabric sheath.

La présente invention concerne une gaine textile (1) pour la protection rapprochée du convoyage de produits sensibles par diffusion d'une veine d'air stérile, notamment selon une direction sensiblement verticale, formée d'une paroi étanche (2) et d'une paroi poreuse (3) s'étendant longitudinalement selon l'axe de la gaine, ladite gaine délimitant un conduit (9) d'alimentation d'air stérile et étant caractérisée en ce qu'elle comporte un moyen (4) s'étendant longitudinalement le long de ladite gaine assurant une diffusion médiane d'air stérile à vitesse lente et, de part et d'autre, une diffusion latérale d'air stérile à vitesse plus élevée. L'invention concerne également une hotte à flux laminaire lavable ou jetable constituée d'une gaine textile limitée à chaque extrémité par un plan perpendiculaire à l'axe de la gaine textile.

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