Stoves and furnaces – Stoves – Cooking
Patent
1976-04-12
1977-05-10
Capossela, Ronald C.
Stoves and furnaces
Stoves
Cooking
55DIG36, 126299A, 126299B, F23J 1112
Patent
active
040221180
ABSTRACT:
This invention relates to a ventilating system used for withdrawing cooking fumes from a kitchen, teaching an improved fire rated centrifugal grease extractor and flow control damper arrangement at the inlet to the extractor.
The disclosed centrifugal grease extractor structure defines a tortuous airflow path between the inlet opening from the kitchen and the exhaust duct that leads to the outside atmosphere. This tortuous path defining extractor structure includes downwardly pitched bottom and top walls and interconnected vertical side walls and a vertical rear wall, and upwardly and downwardly depending baffles formed from these walls and by the flow control damper when opened. The structure further includes a projection that upstands from the bottom wall opposite the one downwardly disposed baffle, and another projection from the rear wall that extends toward and opposes the lower most end of this same baffle; whereby the separated throat areas are defined therebetween that improve the centrifugal extraction effect at these areas, and further whereby the projections preclude or minimize the migration of collected grease droplets past these areas. High pressure spray wash mechanism further is disclosed for cleaning grease from the surfaces of the tortuous path defining structure.
REFERENCES:
patent: 3207058 (1965-09-01), Gaylord
patent: 3490206 (1970-01-01), Doanne
patent: 3786739 (1974-01-01), Wright
Capossela Ronald C.
Lind Charles F.
McGraw-Edison Company
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