Abstract: A kitchen exhaust apparatus is disclosed herein which comprises an enclosure having a bottom opening with a plate mounted in the opening to define an exhaust opening, a filter mounted within the enclosure, and air inlet and exhaust means for directing air from outside the enclosure to the exhaust opening and subsequently through the filter and out of the enclosure. In another aspect there is disclosed a combination cooking unit and exhaust apparatus mounted above the cooking unit.

Abstract: A kitchen exhaust system has an outside air supply blower and a hood exhaust blower discharging outside the building. Air is introduced from the supply blower into the area behind the cooking unit and the exhaust is taken through a removable flow director or guide secured to the typical exhaust hood. The flow guide has an inlet located toward the front of the cooking unit and relatively near the top of the cooking unit and has convenient release devices to facilitate removal of the guide from the hood to facilitate removal and replacement of filters or grease removing devices from their usual disposition in the hood assembly. The shape of the flow director is such as to provide a high velocity of the fluid flow adjacent the intake opening and thereby provide more effective scavenging action for combustion products and cooking fumes than is typically found with an exhaust unit unassisted by the flow director of the present invention.

Abstract: A kitchen exhaust system has an outside air supply blower and a hood exhaust blower discharging outside. 80% of the air discharged by the exhaust blower is taken from the intake blower through cooktop level and overhead supply outlets in the hood, and 20% is taken from the room. The supply discharge outlets are arranged to provide a venturi action removing smoke and fumes from over the cooktop.