Ventilating system for use with devices which produce airborne i

Details Ventilating system for use with devices which produce airborne i Ventilating system for use with devices which produce airborne i

1981-08-19

1984-08-28

Joyce, Harold

Stoves and furnaces

Stove hoods

F24C 1520

Patent

active

044677820

ABSTRACT:
A ventilation system for use with devices which produce airborne impurities, particularly cooking grills, deep fat fryers and the like. A first blower supplies untempered makeup air. A first plenum, which includes a first perforated wall having a plurality of openings therein, supplies air from the first blower, via a duct, into space beneath an upper front portion of a hood. A second plenum, which includes a second perforated wall having a plurality of apertures therein, supplies air from the first blower, via a duct, into space beneath the hood to cool air and impurities, which may include flue gas, moving upwardly in space adjacent the second perforated wall, the apertures in the second perforated wall being positioned to discharge air substantially horizontally into this space. A second blower is provided for exhausting air and impurities from the hood via a duct and an exhaust plenum. One or more filters are arranged opposite the first perforated wall and the exhaust plenum to remove grease from the exhaust. At least one opening, preferably one or more slots, extend along a member defining a wall portion of the exhaust plenum adjacent the top of the second perforated wall to effect passing into the exhaust plenum of air, impurities and flue gas moving upwardly along this wall.

REFERENCES:
patent: 3285154 (1966-11-01), De Rosa
patent: 3400649 (1968-09-01), Jensen
patent: 3616744 (1971-11-01), Jensen
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patent: 4047519 (1977-09-01), Hett
patent: 4089327 (1978-05-01), Welsh
patent: 4127106 (1978-11-01), Jensen
patent: 4143645 (1979-03-01), Blumberg
patent: 4146017 (1979-03-01), Overton, Jr.
patent: 4155348 (1979-05-01), Ahlrich
patent: 4200087 (1980-04-01), Welsh

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