Stoves and furnaces – Stoves – Cooking
Patent
1982-12-08
1985-04-02
Focarino, Margaret A.
Stoves and furnaces
Stoves
Cooking
126 21R, 126299D, 99400, 99446, 219400, 219460, F24C 300
Patent
active
045080976
DESCRIPTION:
BRIEF SUMMARY
TECNICAL FIELD
The present invention relates generally to grilling appliances and more particularly to a barbecue appliance in which fat and cooking residues are incinerated.
BACKGROUND ART
Many attempts have been made to collect food and grease residues produced while grilling or charbroiling meat and other foods. The most widely used method is to collect the residues below the food in a collection tray or other receptacle which must be emptied periodically. In all types of grillers this operation is inconvenient and time consuming, and on barbecue grillers the collection tray presents a serious risk of fire. The practice of disposing of a proportion of cooking residues produced in a barbecue griller by the use of a so-called "volcanic rock" bed has provided a partial answer to the problem of grease disposal. By this method a layer of porous rock material is placed on a mesh tray located below the cooking surface with the result that some of the residues are burnt. This practice still requires the use of a grease collection tray which, because it is often exposed to considerable reflected heat from the rocks above offers increased risks of fire in addition to the inconvenience of disposal and cleaning.
DISCLOSURE OF INVENTION
In one form the present invention provides a cooking appliance having a horizontal cooking surface having slotted openings extending from its upper surface to its lower surface, a tray of porous "volcanic rock" material located horizontally beneath the cooking surface, a heating element comprising two gas burners located directly below the rock tray, an absorbent tray containing absorbent material located beneath the burners and lying in the horizontal plane, an insulated enclosure which contains, insulates and locates the aforementioned components and in one end of which is formed a rectangular aperture, a metal outer casing which forms a plenum chamber adjacent to the aperture, and a louvre segment located on the upper surface of the plenum chamber substantially level with the cooking surface.
Cooking action is carried out by a stream of hot gas flowing through the slots in the cooking surface and by radiated heat emanating from the volcanic rock and the heating element itself. Heat is imparted to the wall of the enclosure thence into the lower surface of the absorbent tray and into the absorbent, and directly into the upper surface of the absorbent by radiation from the hot rocks and heating element. Air is drawn in large quantity downwards through the register into the plenum chamber from where it passes over the hot absorbent and rises inside the enclosure passing around the heating element and volcanic rocks and leaving the apparatus through the slots in the cooking surface. Grease which falls onto the absorbent is slowly vapourised and burnt in the incoming stream.
Thus there is provided a barbecue griller in which all grease and food particles are incinerated and which is reliable, functional, easy to install and which presents a pleasing appearance in the kitchen.
BRIEF DESCRIPTION OF DRAWINGS
While the present invention is susceptible of various modifications and alternative contructions, one embodiment is shown in the drawings and will be described herein. However, it should be understood that it is not intended to limit the invention to the particular form disclosed, but on the contrary, the intention is to cover all modifications and alternative constructions falling within the scope of the invention.
Referring now to FIGS. 1-4.
FIG. 1 is an isometric view of an exemplary apparatus embodying the features of the present invention here depicting the fascia, cooking surface, air louvre, control knobs and the outer casing.
FIG. 2 is a sectional view through the side of the apparatus.
FIG. 3 is a plan view of the cooking surface, fascia, louvre and control knobs from which the view in FIG. 2 is geometrically projected.
FIG. 4 is an exploded isometric view of the apparatus as depicted in FIG. 1 .
BEST MODE OF CARRYING OUT THE INVENTION
Referring to FIGS. 1 and 3 t
REFERENCES:
patent: 3286620 (1966-11-01), Brown
patent: 3348472 (1967-10-01), Anetsberger et al.
patent: 3444805 (1969-05-01), Happel et al.
patent: 3474724 (1969-10-01), Jenn
patent: 3712819 (1973-01-01), Field
patent: 3745912 (1973-07-01), Field
patent: 3757671 (1973-09-01), Warshaver et al.
patent: 3938494 (1976-02-01), Clark
patent: 4034662 (1977-07-01), McLane
patent: 4034663 (1977-07-01), Jenn et al.
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