Compact double fan apparatus and method with grease-separating c

Details Compact double fan apparatus and method with grease-separating c Compact double fan apparatus and method with grease-separating c

1984-02-10

1985-03-26

Joyce, Harold

Stoves and furnaces

Stove hoods

55406, 55DIG36, 98 62, 98 331, A47J 3638

Patent

active

045066558

ABSTRACT:
A double-fan apparatus for use in combination with an exhaust hood adapted to be mounted over a cooking appliance in a kitchen. The fan has an upper impeller section and a lower impeller section each of which is a centrifugal impeller. There is a conduit to pass grease-laden fumes upwardly from the exhaust hood to the lower impeller section, and a conduit to conduct makeup air downwardly from the double fan to the hood. The double fan includes relationships by which the makeup air passes generally horizontally from the ambient atmosphere to the upper impeller section, then flows generally horizontally from the upper impeller section to the peripheral regions of the double fan, and then flows downwardly to the conduit connected to the hood. A grease trap is built into the double fan to prevent upward flow of substantial amounts of grease.

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