A vent and a cooker having a vent are provided for which a built-in component accommodated in the cooker is not easily visible from the outside through an exhaust hole provided in the vent, which enables simple manufacturing and assembly, which can smoothly discharge exhaust gas, and has a function as a support structure of the cooker, and a vent structure thereof. The vent may include a main vent configured to be exposed through an upper portion of the cooker and including a main exhaust surface having main exhaust holes and a sub-vent spaced apart from a lower portion of the main vent and aligned in parallel with the main exhaust surface and including a sub-exhaust surface having sub-exhaust holes.

A vent and a cooker having a vent are provided for which a built-in component accommodated in the cooker is not easily visible from the outside through an exhaust hole provided in the vent, which enables simple manufacturing and assembly, which can smoothly discharge exhaust gas, and has a function as a support structure of the cooker, and a vent structure thereof. The vent may include a main vent configured to be exposed through an upper portion of the cooker and including a main exhaust surface having main exhaust holes and a sub-vent spaced apart from a lower portion of the main vent and aligned in parallel with the main exhaust surface and including a sub-exhaust surface having sub-exhaust holes.

A gas-fired, powered infrared burner unit comprising a perforate distribution plate configured as a tray and a porous foam metal burner element carried in the tray, the combination overlying the open top of a plenum box and sealingly fastened to an edge flange of said box by a retainer having a surrounding flange fastened to the plenum box flange by welding, staking or other means so as to eliminate the need for a gasket. The foam metal medium is constructed of a foam metal alloy to have a pore size of 1000 micros5%, and produce, along with the perforations in the distribution tray, a port loading of between about 850 and 1,000 BTU/in.sup.2.

A gas-fired, powered infrared burner unit comprising a perforate distribution plate configured as a tray and a porous foam metal burner element carried in the tray, the combination overlying the open top of a plenum box and sealingly fastened to an edge flange of said box by a retainer having a surrounding flange fastened to the plenum box flange by welding, staking or other means so as to eliminate the need for a gasket. The foam metal medium is constructed of a foam metal alloy to have a pore size of 1000 micros5%, and produce, along with the perforations in the distribution tray, a port loading of between about 850 and 1,000 BTU/in.sup.2.

A cooking and cooling apparatus, including a main body to receive at least one item thereupon, a cooking unit disposed on at least a portion of a top surface of the main body to cook at least one food item thereon, and a cooling unit disposed within at least a portion of the main body to keep contents stored within at a cool temperature.

A flameless cooking apparatus for use with liquid fuels and for indoor or outdoor use under field operations. The burner exhibits low CO and hydrocarbon emissions and meets standards for burner thermal efficiency when used with JP-8 fuel. The apparatus employs a catalytic burner having among its parts (i) a combustion catalyst; (ii) a conductive surface, e.g., cooking surface; and (iii) in between the catalyst and the conductive surface and in direct physical contact with both surfaces, a heat spreader for conductively transferring heat of combustion from the catalyst to the conductive surface. Also claimed are a method of heat flux and a method of cooking.

A burner system for a cooking device has at least one burner surface wherein the at least one burner surface is designed in such a way that the burner system has a low minimum power density with homogeneous temperature distribution at the same time. In a first aspect, the burner system includes a fuel supply and a first burner surface for burning the fuel that is provided downstream of the fuel supply. The burner system includes a second burner surface for afterburning that is separate from the first burner surface and is provided downstream from the first burner surface. Moreover, a method for operating the burner system is shown.

A gas cooker may include a case, a top plate that shields an upper surface of the case and on which items to be cooked are seated, a plurality of burners provided inside of the case, an electric valve assembly that controls a gas supply to the plurality of burners, a main pipe connected to the electric valve assembly and that supplies gas, and a plurality of branched pipes, respectively, connected to the electric valve assembly and the plurality of burners. The electric valve assembly may include a main valve connected to the main pipe, a plurality of sub-valves respectively connected to the plurality of branched pipes, and a manifold that connects the main valve and the plurality of sub-valves in parallel and enables the main valve and the plurality of sub-valves to be consecutively provided and configured in a single assembly form.

A cooking grate assembly configured for use on a portable radiant heater with a front safety grille. The cooking grate assembly has a flat main cooking grate with an upper/inner end and a lower/outer end, a pair of spaced hook tabs extending from the upper/inner end of the grate that attach to an upper part of the grille, and a pair of inwardly-angled key tabs extending from the lower/outer end of the grate. A pair of detachable legs supports the grate from a lower part of the grille, with a rotatable locking connection to the key tabs on the grate at one end and opposed inner and outer hooks at the other end that both support the grate on the grille and provide a nesting flat interlock to the rear face of the grate for storage.

A portable heater is provided and comprises: a housing provided with a front opening; at least one pilot burner; at least one main burner unit provided within the housing and comprising a front portion facing the front opening of the housing; a gas pressure regulation system connectable to a portable supply of gas; a gas valve assembly mounted to the housing and comprising a gas valve controlling the flow of gas within the heater. Said gas valve assembly cooperating with at least one knob movable along and around an axis for selectively operating the gas valve, controlling the flow an air/gas mixture, and operating a means to ignite the gas/air mixture exiting from the at least one pilot burner. The gas valve being a thermostatic valve provided with means cooperating with a temperature sensor.