METHOD AND DEVICE FOR VENTILATION AND AIR DISINFECTION BY MIXING WITH INCOMING AND OUTGOING FLOWS ATTACHED ACCORDING TO COANDA EFFECT Russian patent published in 2009 - IPC F24F7/00 F24F3/16 B01D46/10 

FIELD: heating.

SUBSTANCE: invention relates to ventilation and air disinfection. Method of room (3) ventilation by mixing with primary incoming jet (19) attached to ceiling (20) and with outgoing flow (21) attached to floor (6) according to Coanda double effect (C) involves providing for average incoming velocity (Vs) less than average outgoing velocity (Va) [Vs<Va] and withdrawing contaminated outgoing air flow (21) through exhaust surface (Sa) which comprises lower exhaust wall (132) physically contacting room (3) floor (6) so that to ensure exhaust loop (55) of air suction (A) be adhering to floor (6) surface according to Coanda effect (C) right opposite exhaust surface (Sa). The suction nozzle of the device, i.e. its exhaust outlet (111) comprises first exhaust wall (132) called the lower one and made directly in floor (6) and second exhaust wall (133) called the upper one and formed by section (134) of suction nozzle (118) base (137); its vertical exhaust surface (Sa) is free, is formed by the section of open annular vertical surface (136) located between suction nozzle (118) base (137) and floor (6) and at floor (6) level provides for air suction along loop (55) adhering to the floor from expanding flat thin exhaust sector (138) from the other three room (3) walls (50, 144, 140) opposite to process wall (52); vertical exhaust surface (Sav) of suction nozzle (118) in floor air vent (3) is smaller than effective incoming cross-section (Sse) of incoming opening (110) in incoming surface (Ss), the result is lower average incoming velocity (Vs) than average outgoing velocity (Va) [Vs<Va].

EFFECT: elimination of "spurious shunted flow" which is commonly revealed in ventilation systems with attached air flow.

16 cl, 31 dwg