Ventilating hood

Details Ventilating hood Ventilating hood

1986-10-10

1987-10-20

Joyce, Harold

Stoves and furnaces

Stove hoods

55DIG36, 98 36, F21C 1508, F23J 1100

Patent

active

047006889

ABSTRACT:
In a ventilating hood generally for use in conjunction with a heating apparatus, such as a cooker, a housing incorporates both a diverter and a rear support, the two of which join to segregate the incoming air through a supply conduit from the outgoing air traversing through a support arranged filter and into an exhaust outlet. The front wall of the housing, which is spaced from the lower end of the diverter, incorporates a slightly upwardly inclined deflector, which directs substantially all of the air incoming to the hood upwardly and rearwardly directly towards for movement through the filter, and out of the exhaust outlet, and since the air is generally unencumbered by any structure in the path of its flow, it moves in a rather parallel course with the arranged diverter, and rapidly exits carrying the entrained fumes therewith significantly reducing the BTU requirements for operation of this hood. A thinly slotted diffuser extending approximately the width of the hood maintains a thin film air flow through the same and thereby enhancing the efficiency of operation of the hood through a minimum of absorption of tempered air. A second deflector functions in cooperation with a first named deflector, and directs a minor segment of the air flow substantially downwardly for creating an air shield above the frontal portion of the heating apparatus, to thereby prevent the escape of any generated fumes from avoiding entrainment with the major flow of air passing through the filter and out of the hood by way of its exhaust conduit.

REFERENCES:
patent: 3457850 (1969-07-01), Sweet et al.
patent: 3899887 (1975-06-01), Kaufman et al.
patent: 4043319 (1977-08-01), Jensen
patent: 4047519 (1977-09-01), Nett
patent: 4109641 (1978-08-01), Hunzicker
patent: 4129121 (1978-12-01), Dorius
patent: 4211155 (1980-07-01), Stoll et al.
patent: 4216708 (1980-08-01), Wyatt et al.

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