Stoves and furnaces – Stove hoods
Patent
1977-09-29
1979-03-13
Capossela, Ronald C.
Stoves and furnaces
Stove hoods
55DIG36, 165DIG12, F24C 1520
Patent
active
041436458
ABSTRACT:
The invention comprises a method and an exhaust hood for the removal of heated, fouled air from a defined work area in a room having air tempering equipment, and having a source of fouled air located in the defined work area. The hood comprises an enclosure having a lower opening, the enclosure being positioned above the source of heated, fouled air, and means for supplying make-up air to the hood at a first determined rate. The make-up air is directed downwardly toward the fouled air source at a predetermined angle, thereby causing the make-up air to mix with the convectively rising heated, fouled air. The mixture of make-up air and fouled air is then exhausted at a second predetermined rate, thereby establishing an air stream from the make-up air source to the exhaust area. Contaminants are removed from the air to be exhausted and the make-up air is pre-heated with heat from the exhaust air.
REFERENCES:
patent: 3194308 (1965-07-01), Haried
patent: 3400649 (1968-09-01), Jensen
patent: 3457850 (1969-07-01), Sweet et al.
patent: 3513766 (1970-05-01), Ahlrich
patent: 3664255 (1972-05-01), Kuechler
patent: 3805685 (1974-04-01), Carns
patent: 3827343 (1974-08-01), Darm
patent: 3870494 (1975-03-01), Doane
patent: 3978777 (1976-09-01), Nett
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