KITCHEN VENTILATING SYSTEM HAVING DOWNWARDLY DIRECTED AIR CURTAIN

摘要

A kitchen ventilator has a first outlet for connection to an evacuation duct and a second outlet for recirculation air. The pressure side of the fan is connected to these outlets by means of a valve. A duct from the valve to a odor removal filter adjacent the second outlet forms a plenum chamber, the bottom of which is the bottom wall of the ventilator housing. In this bottom wall openings are provided for producing a downwards flowing air curtain only when the valve is set for recirculation.