Stoves and furnaces – Stoves – Cooking
Reexamination Certificate
1999-08-02
2001-01-23
Yeung, James C. (Department: 3743)
Stoves and furnaces
Stoves
Cooking
C126S03700R, C126S0390BA, C431S155000, C431S160000
Reexamination Certificate
active
06176233
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to mobile cooking systems used to feed large numbers of people in the field. Specifically, a burner system which utilizes a multi-fuel burner is provided for providing a portable source of heat for a variety of cooking applications and sanitary applications.
The operational effectiveness of a military unit when on maneuvers depends upon successfully feeding a large number of personnel in the field. Various cooking stations and equipment for sanitizing cooking utensils have been developed for this purpose which are portable and field-ready. One such system in widespread use is the M-59 Field Range. The Field Range comprises a heating cabinet with a vertical column of cooking stations, one of which is dedicated to baking, one to frying and one for heating containers of liquid. In the past, a single gasoline fuel burner has been used to supply heat to the M-59 Field Range which is positioned in one of two vertical locations within the M-59 Field Range Heating Cabinet, depending on the particular cooking task.
The M-59 Field Range heating cabinet and its burner, known as the M2 burner, while providing satisfactory utility in the field, has its limitations. For instance, when heating large containers, such as a fifteen gallon stock pot, the heat output from the burner, and heat transfer between the burner and the heating cabinet is low, which disadvantageously increases the time for heating the pot to a cooking temperature.
The previous gasoline fired M2 burners also provide significant safety issues for personnel using the M-59 Field Range. When moving the gasoline fired burner of the prior art, the device must be cooled down before it can be refueled, or repositioned within the M-59 heating cabinet. Accordingly, a burner which uses a less volatile fuel is desirable to facilitate use of the heater in a safe manner.
SUMMARY OF THE INVENTION
It is a primary object of this invention to provide a powered multi-fuel burner which may be used in a cooking and heating appliance, or operated as a stand-alone cooking and heating appliance.
In carrying out the invention, a frame is provided which may be positioned conveniently in an existing heating cabinet of a field cooking facility, or may be supported on a surface as a stand-alone device. A heat plenum is located at one end of the frame, and a front side of the heat plenum receives a flame tube from a burner assembly. The top of the heat plenum has an apertured surface which functions as a flame spreader, emitting hot gases, but no flame, to produce cooking heat without producing soot on any adjacent surface.
The burner assembly is supported on the opposite end of the frame. A flame tube of the burner extends within the insulated surfaces of the fire box. The burner assembly is separated from the burner box by a convective air curtain, which directs heat from the plenum away from the burner assembly.
In a preferred embodiment of the invention, the frame has a width for being supported within the bottom of a conventional heating cabinet of a cooking station. When not in use in the heating cabinet, the frame includes feet which will support the powered multifuel burner above ground where it can be used as a direct source of heat in a variety of cooking and sanitizing operations.
REFERENCES:
patent: 1838903 (1931-12-01), Buschow
patent: 2391460 (1945-12-01), Howard
patent: 4092973 (1978-06-01), Bernazzani
patent: 5368011 (1994-11-01), Bodner
patent: 1116241 (1956-05-01), None
Babington Robert S.
Pollock, Vande Sande & Amernick RLLP
Yeung James C.
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