B - Operations – Transporting – 08 – B
Patent
B - Operations, Transporting
08
B
98/43
B08B 15/02 (2006.01)
Patent
CA 1069749
Abstract of The Disclosure Ventilating apparatus having an exhaust hood for mounting in a room and normally above a stove, grill, or other apparatus from which fumes arise. Ambient air from outside the room being ventilated is forced into an insulated intake chamber through a relatively narrow longitudinal slot at the bottom of the intake chamber, thence directed rear- wardly and upwardly across a fume collection chamber, through a grease filter, and into an exhaust chamber from which the fumes are exhausted to the atmosphere by a fan. The outside air is forced through the slot in a fast moving narrow stream to form an air curtain across the fume collec- tion chamber with minimal mixing of the fume laden air and the air curtain. Tempered air is introduced into the room being ventilated adjacent the exhaust hood to provide a minimum influx of tempered air from the room being ventilated into the hood to prevent dissipation fumes into the room, and to facilitate collection of such fume laden air by the exhaust hood.
294548
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