METHOD AND DEVICE FOR AIRBORNE VENTILATION AND DECONTAMINATION BY MIXING AN AIR DELIVERY AND SUCTION FLUX BOUND BY COANDA EFFECT

摘要

The invention concerns a device (101) for airborne decontamination of a room (3) by mixing, an air delivery (19) and suction (21) flux bound by Coanda effect (C). A vertical piping (103) comprises a suction port lower end (104) and an air delivery upper end (105). An actuating means (106) circulates air (A) inside and outside. A suction nozzle (118) provides a vertical suction surface (Sa), for sucking air (A) along a suction duct (55) parallel and bonded to the floor (6) by Coanda effect (C). A blow nozzle (129) with ceiling surface effect (20) provides a front porous blowing surface (Ss). Said nozzle produces a primary air jet (19) bound to the ceiling (20) by Coanda effect (C). A decontaminating means (127) decontaminates the air (A). The active section (Sae) of the suction surface (Sa) is lower than the active surface (Sse) of the blowing surface (Ss). Thus the unwanted shunt air stream commonly associated with bound air flow ventilation systems is eliminated.