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US 4,724,823 AGranted
Radiant gas burner assembly
AssigneeSolaronics, Inc.
InventorThomas W. Simpson
Life of this patent
Estimating the term…
Abstract
A gas fired radiant griddle assembly employing a series of perforated ceramic tiles to define a burner surface positioned beneath the griddle. The center area of the assembled ceramic tiles is blocked off so as to define an annular burner surface to minimize the temperature gradient across the griddle surface and the hot combustion effluents are drawn by convection beneath the griddle surface and out the rear corners of the combustion chamber beneath the griddle to heat the peripheral and corner portions of the griddle and further minimize the temperature gradient across the expanse of the griddle.
Claims18
A radiant gas burner assembly comprising:
- a planar metal member defining a heat utilization surface;
- generator means defining a radiant heat burner surface spaces substantially centrally of and below said planar member for directing radiant energy to said planar member as a primary heating source therefor;
- a housing defining a closed combustion chamber around and above said burner surface and peripherally around and below said heat utilization surface;
- and
- means for directing a current of combustion effluent to a peripheral location of said chamber to act as a secondary heating source for at least one peripheral portion of said planar member.
2 more elements
A radiant gas burner assembly comprising:
- housing means defining a sealed column including an upper metal planar member defining a heat utilization surface and forming the upper boundary of said volume, a planar perforated ceramic tile structure to serve as a radiant heat source and positioned substantially centrally of and below said heat utilization surface to direct radiant energy toward said heat utilization surface, a plenum chamber positioned below said ceramic tile structure and defining the lower boundary of said volume, and side defining the lower boundary of said volume, and side walls of said volume above and around said ceramic tile structure;
- a mixing tube passing through the front wall of said plenum chamber and constituting the only entrance to said sealed volume;
- and
- at least one opening in a wall of said housing adjacent the periphery of said housing whereby combustion air entering said volume through said mixing tube in a gas/air mixture flows upwardly through the perforations in said ceramic tile structure for combustion at the upper face of said ceramic tile structure and thereafter directly toward said peripheral opening to serve as a secondary heat source for the heat utilization surface in the immediate area of said opening.
1 more element
A radiant energy griddle apparatus comprising:
- a substantially planar metallic griddle member having a cooling area;
- means defining a chamber having a bottom wall, side walls and an open top;
- said griddle member being sealingly disposed on the chamber means to close said top;
- a radiant generator having a lower surface and a perforate active upper surface area disposed in spaced relation with the griddle member;
- said generator active surface area being substantially smaller than and wholly laterally inwardly spaced from the perimeter of said cooking area;
- plenum means adjacent the lower surface of said generator for receiving fuel and air for passage through the generator and into said chamber;
- and exhaust means having at least one port at the periphery of the chamber and adjacent a periphery of said cooking area for drawing effluent from the radiant generator, along the lower surface of said griddle member to said port to supplementally heat the griddle member in the vicinity of said port.
4 more elements
A radiant fired griddle comprising:
- a griddle member having a lower surface and an upper cooking surface;
- a support housing having peripheral walls terminating in an upper edge, said griddle member being sealingly disposed on said upper edge;
- a radiant generator forming a bottom wall of said chamber of said housing and being connected to said peripheral wall in sealed relationship, said generator comprising, in part, a perforate tile pattern and, in part, a non-radiating center portion;
- means for admitting fuel and air to the lower surface of the perforate tile pattern whereby said fuel and air passes into the chamber formed by the radiator, the peripheral wall and the griddle member;
- means for igniting said fuel and air mixture adjacent the surface of the tile pattern within said chamber thereby to activate the generator;
- and
- exhaust means formed in said wall at at least one peripheral location to force the flow of effluent from the active surface of the tile to a peripheral location to boost the temperature of the griddle member above said peripheral location thereby to promote temperature uniformity of said griddle member over the entire surface area thereof.
4 more elements
A radiant fired griddle apparatus comprising:
- a rigid metallic griddle having an upper cooking surface and a lower energy-receiving surface;
- a gas-fired, radiant energy generator disposed below and in spaced relationship to said energy-receiving surface;
- means for exhausting products of combustion from said generator;
- valve means for controlling the flow of combustible gas to the generator;
- and
- control means for operating said valve in a mode wherein said valve is opened for a predetermined portion of a repeating time cycle.
3 more elements
Dependencies are inferred from the claim text.