Backshelf ventilating hood

Details Backshelf ventilating hood Backshelf ventilating hood

1978-01-23

1979-05-08

Capossela, Ronald C.

Stoves and furnaces

Stove hoods

98 36, 55DIG36, F24C 1520, F23J 1100

Patent

active

041530446

ABSTRACT:
A low profile backshelf type hood having back, top, and side walls is either floor mounted or wall mounted to form a hood enclosure partially surrounding a source fo fumes or vapors. Outside untempered forced air is directed in through the top of the hood and up to the top front of the hood, where it is directed backwardly and downwardly through the enclosure as a narrow curtain at high velocity toward an exhaust opening. A filter is located within the opening and angularly oriented such that the high velocity air curtain engages the upper third of the filter and perpendicularly to the filter. Fumes arising upwardly pass into the exhaust opening along with the injected air, with the exhausted fumes and air then being drawn upwardly and out through an exhaust channel within the hood enclosure ductwork leading to the exhaust fan. Provision is also made for exhausting combustion fumes from gas fired equipment.

REFERENCES:
patent: 3978777 (1976-09-01), Nett
patent: 4043319 (1977-08-01), Jensen
patent: 4089327 (1978-05-01), Welsh

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