F - Mech Eng,Light,Heat,Weapons – 27 – D
Patent
F - Mech Eng,Light,Heat,Weapons
27
D
99/21, 309/66
F27D 7/04 (2006.01) A47J 37/06 (2006.01) F24C 15/10 (2006.01)
Patent
CA 1270509
ABSTRACT An air slot cooking grill utilizes one or more jet curtain plates to form rectangularly cross-sectioned heated air jets which begin to diffuse or "plume" slightly before impinging upon a food item supported on a gate member disposed within the grill housing. Each of the jet curtain plates has a corrugated cross section defined by alternating series of parallel, generally V-shaped ridges which respec- tively project toward and away from the grate member, and a series of rectangularly cross-sectioned air slots formed in apex regions of the series of ridges which project toward the grate member. The ridges which project away from the grate member function to facilitate an even distribution of supply air to the air slots from a supply plenum disposed within the housing and bounded by the jet curtain. One or more supply fans and associated heating elements are uti- lized to create within the housing a recirculating flow of heated air which is forced through the jet curtain plate or plates toward the grate member and food items disposed thereon, and then returned to the fan. The jet curtain plate ridges may also be used as sloped drainage troughs to receive and drain away grease or other liquids falling from the food items being cooked. In several embodiments of the grill a heat sink member is positioned in the recirculating air flow path to absorb and store heat from the air. The stored heat is released to the air in response to a tem- perature drop therein when cold food items are placed in the grill during sequential batch cooking operations to signifi- cantly reduce the individual batch cooking time.
530991
Archer Virgil L.
Gowling Lafleur Henderson Llp
LandOfFree
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