Make-up air device for range hood

Details Make-up air device for range hood Make-up air device for range hood

1980-11-26

1982-08-31

Yeung, James C.

Stoves and furnaces

Stove hoods

55DIG36, F21C 1508, F24J 1100

Patent

active

043466923

ABSTRACT:
A make-up air device for an overhead exhaust hood for a cooking range including a supply air plenum having a controlled air chamber in the outlet passage of the plenum for controlling the volume, velocity and direction of the flow of make-up air from the plenum over the cooking range. The controlled air chamber includes an upper inlet portion projecting into the air plenum space and including variably controlled damper blades. The lower discharge end of the control chamber includes adjustable louvers for controlling the direction of the discharged air. The adjustable louvers may be mounted in the bottom wall of the control chamber or the side wall. When the adjustable louvers are in the bottom wall, the side wall may be perforated to provide a by-pass flow. Moreover, when the adjustable louvers are in the bottom wall, a transverse perforated plate may be installed in the chamber between the inlet dampers and the discharge louvers in order to dampen the velocity of the air flow.

REFERENCES:
patent: 4146017 (1979-03-01), Overton, Jr.
patent: 4155348 (1979-05-01), Ahlrich
patent: 4286572 (1981-09-01), Searcy et al.

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