Abstract: Atmospheric gas burner for a cooking appliance comprising: a burner head with a lateral perimeter wall defining a distribution chamber provided with flame orifices; a gas injector; means for conveying primary air to downstream of the injector; and a venturi directing the gas/air mixture towards the distribution chamber; at least one region of the lateral wall, free of flame orifices, is pierced with a through-aperture and a passage isolated from the distribution chamber is established in the burner head to connect the aperture to the injector, this aperture and this passage having cross sections which ensure a stream of primary air from the outside of the burner head with a flow rate appropriate to the operation of the burner.

Abstract: A combustion system and a method for adapting the combustion system to utilize a first fuel when the system has been designed for a second fuel. The method and system provide inlets for adding air to lower the quality of the first fuel to the quality of the second fuel or inlets for adding a third fuel of a higher quality than the second fuel to raise the quality of the first fuel to the level of the quality of the second fuel.

Abstract: Gas burner for a cooker, comprising a burner head bounded by an approximately frustoconical peripheral side wall with a small cross section located at the top and including a multiplicity of slots distributed peripherally and forming flame orifices, said burner head being topped by a cover or cap; the side wall 2′ has an angle of inclination &agr; to the vertical of about 10 to 20°, and the bottom 8′ of each slot 3 forming a flame orifice, which extends transversely to the side wall, has an angle of inclination &bgr; to the horizontal of about 20° to 30°.

Abstract: A burner having improved flame quality even at high turn-down ratios. The burner includes a flow director which is preferably a bent sheet or plate positioned in the burner to alter the flow geometry of the air component into a series of channels where the air mixes with the fuel. Preferably the flow director is perforated, the perforations providing a second avenue for the flow of air into the mixing channel.

Abstract: A burner for a cooking range includes a burner base disposed on the range top, a burner body extending upwardly through aligned openings in the range top and the burner base to a threaded rim, a venturi having a threaded annular flange secured to the threaded rim of the burner body and a venturi tube depending from the flange through the burner body to a lower end. The burner base is sandwiched between the annular flange of the venturi and the range top and is thereby mounted to the range top by means of the venturi. A gas orifice is disposed beneath the bottom end of the venturi tube for ejecting gas upwardly into the venturi tube and a ported burner ring and burner cap rest on the burner base overlying the venturi tube. The burner is easily assembled and disassembled from the top without special tools and without raising or removing the range top. Components of the burner may be individually removed from the top of the range for maintenance or replacement.

Abstract: A gas burner assembly, including its gas intake manifold, in combination with upper and lower tiered baffles, and includes the side chambers for regulation of flow if air through a draw in and through type of burner assembly, to provide heated air for a building. Various slots are provided in both the side chambers, and are custom designed for application to select tiers of the upper and lower baffles, to precisely regulate the flow of air into the combustion chamber, and regulate the type of flame generated, to furnish very precise generation of heat, and BTU output for the various sized burner assemblies.

Abstract: A multi piece gas burner assembly that is machined or cast and having a burner base that contains holes for primary air where the hole dimensions do not exceed the height of a jet mounted therein. The burner base is fastened onto an appliance. The burner head rests upon a boss on the burner base and has a tube that directs a flammable gas-air mixture from the burner base into a cavity created between the burner head and the burner cap. The burner cap rests upon the burner head and contains an outer edge that is turned downwards in order to allow fluid to drip away from the flame. A groove is cut into the burner cap just inside the down turned outer edge and provides a location for a support flame. The location of the groove prevents fluid and dust from collecting inside the groove. The groove captures the flammable gas-air mixture, which provides a constant ignition source for the gas-air mixture through slots in the burner cap when ignited.

Abstract: Gas cooking appliance equipped with a top plate (1) having at least one region (7) for the attachment of an injector (6) of a gas burner (4) and for supporting a head (12) of the burner coaxial with the injector (6); the region (7) has a non-circular contour, particularly a polygonal contour, and the burner head (12) has legs (16) by which it rests on the region (7), the number and arrangement of which legs are such that they collaborate with the sides of the non-circular contour of the region (7) so that the burner head (12) can occupy only a determined and limited number of angular positions while at the same time being arranged coaxial with the injector (6) and so that, for any incorrect positioning—in terms of orientation and/or in terms of centring—of the head (12), the latter rests on the top plate such that it is inclined and that the incorrectness is thus visible.

Abstract: Method and apparatus for continuation of combustion with an oxy-fuel combustion system when the supply of oxygen is temporally reduced or stopped. Air or oxygen enriched air and fuel are introduced into the device being heated in place of the oxy-fuel mixture to effect combustion and maintain the heating level in the furnace. Water cooling of the furnace gases is used to reduce the volume of exhaust gases when operating in the air or oxygen enriched air mode.

Abstract: Apparatus for reducing the total pressure of a compressible fluid fuel. The apparatus includes at least two closely spaced apart constant enthalpy expansion sections, each section having at least one orifice, the orifices in adjacent sections being noncoaxial. The pressure reduction lowers flow velocity when mixed with the air to below the flame speed to promote ignition and stable combustion.

Abstract: A device for rotatably mounting on a mixing tube of a gas burner apparatus. The device includes a perforated shield portion for positioning over an air opening in the mixing tube to prevent insect intrusion therein, and an unperforated portion which partially or completely encloses an air opening of the mixing tube to prevent or limit primary air into said tube. A stop is provided on the device to limit rotation thereof and an extending tab provides for ease of rotation of the device on the mixing tube by providing an accessible surface against which pressure may be applied.

Abstract: The invention relates to a premix burner with high flame stability for use in a heat generator, preferably in the combustion chamber of a gas turbine. Modern, lean-operated premix burners enable very low noxious emissions, but sometimes operate very close to the extinction limit. To increase the stability of the lean premix combustion by increasing the distance between flame temperature and extinction limit temperature the invention proposes to equip the burner in the mixing zone (200) with a net-like structure (201) for the premixing of combustion air and fuel. According to a preferred embodiment, the net-like structure (201) consists of a plurality of layers of individual wire mesh fabrics (202) arranged at a distance from each other. The wire mesh fabrics (202) are preferably equipped with an oxidation-promoting, catalytically active surface.

Abstract: A cooking appliance includes burners having ports that are aligned in a defined alignment with respect to an adjacent structure of a burner body or the cooking appliance within a piloting zone so that the adjacent structure guides the formation of a flame kernel at an outlet of the port. The adjacent structure may be ports which also form flame kernels withing the piloting zone of the burner port outlet, a structural portion of the burner body such as an extended lip protruding beyond the burner port or a separate structure such as a flame rod or other target that stabilizes the flame kernels at the burner port outlet. Such structures provide a method for improving the turndown ratio of burners by preventing lifting or backlash of the flame kernels generated at the burner port outlets by aligning the ports in conjunction with an adjacent structure within a piloting zone.

Abstract: A multi-flame lighter which comprises of a housing, an ignition mean, a fuel housing containing combustible liquid fuel, a valve, a connecting tube, an adjustable valve, a vaporizer, a mixing chamber, a nozzle, and a flame chamber. The present invention requires far fewer parts than any existing lighters that can produce multiple flames. The present invention has a simple design and can be manufactured easily at a consistent quality. The manufacturing and parts cost of the present invention is much lower than the existing lighters that can produce multiple flames due to the single valve, connecting tube, single adjustable valve, single vaporizer, single mixing chamber, and single nozzle configuration. The multi-flame lighter produces multiple clearly visible flames that are both aesthetically pleasing and functional. The multiple visible and forceful flames are equivalent to 2 or more of the flames from a conventional lighter and are wind resistant.

Abstract: The invention relates to an atomizing burner, especially for use in an automobile auxiliary heating system, comprising an atomizing nozzle (2) for processing the fuel, an ignition device (29) and a combustion chamber (8). An iar conduction device (10, 12, 14) is connected upstream of a nozzle holder (3) of the atomizing nozzle (2) in order to achieve finer atomization of the fuel. Said air conduction device subjects the combustion air streaming into the atomizing nozzle (2) to a swirl.

Abstract: A water heater including a water container; a combustion chamber adjacent the container, the combustion chamber having at least one air inlet to admit air and extraneous fumes into the combustion chamber and confine ignition and combustion of the extraneous fumes within the combustion chamber; a burner associated with the combustion chamber and arranged to combust fuel to heat water in the container; and an air diverter positioned between the air inlet and the burner and adapted to channel at least a portion of combustion air passing through at least a portion of the air inlet to a position for mixture with the fuel prior to entering the burner to slow combustion and thereby reduce combustion temperatures and NOx emissions.

Abstract: A gas burner assembly that comprises a gas burner and a plate. The gas burner includes a first surface having an indentation and a second surface defining a gas chamber between the first surface and second surface. The plate is attached to the gas burner such that the plate covers at least a portion of the indentation to define a gas collection area between the plate and the indentation. The indentation comprises at least one gas collector aperture permitting gas transmission from the gas chamber to the gas collection area. The indentation and the plate each include an electrode assembly receiving aperture.

Abstract: A combustion system for a portable forced air heater having two frusta-conical sections attached to a circular burner tube, wherein each frusta-conical section has pre-determined vent hole patterns that allow the gas heater to have a variable burn rate.

Abstract: In a gas-burning apparatus, such as a furnace, a device for reducing NOx emissions includes a cup member mounted proximate to an inlet to a combustion chamber of the apparatus and a perforate member attached to the cup member and located in the combustion chamber at a predetermined distance inwardly from the inlet. The perforate member has a plurality of holes to define a mesh pattern through which the flame and other products of combustion are constrained to pass within the combustion chamber. The perforate member acts as a heat sink to reduce the flame temperature, thereby inhibiting NOx production.

Abstract: A burner head for a gas burner which is preferably of an aluminum die casting body whose outer surfaces are provided with an enamel coating.

Abstract: The invention relates to a premix burner with high flame stability for use in a heat producer, preferably in the combustion chamber of a gas turbine. Modem lean operated premix burners make possible very low pollutant emissions, but sometimes operate very close to the extinction limit. To increase the stability of the lean premix combustion by increasing the distance between the flame temperature and the extinction limit temperature, it is proposed according to the invention to arrange a downstream combustion gas mixing section (300) for the burner, which mixing section (300) projects at least partially into the combustion chamber (50) and enables combustion gases from the combustion chamber (50) access to the fuel/air mixture (144) by means of combustion gas inlet openings (311). The added combustion gases (145) are mixed with the fuel/air mixture (144), and in this manner increase its temperature.

Abstract: A gas fired infrared radiant heating system of improved thermal output. The present invention solves problems associated with prior art designs by providing a single gas delivery system for delivering combustible gas to two or more burner assemblies. The invention consists of a burner housing (10) with two or more burner assemblies (18), each of which can be connected to a typical radiant tube heat exchanger assembly (12). The burner housing contains a single gas delivery system including a valve (14), a single control circuit module (30), a single blower proving switch (50), and a single manifold (16) which will distribute the gas to the multiple radiant tube heat exchanger assemblies (12). In addition, in positive pressure configurations, the burner housing will also have a single air fan (38), whereas in negative pressure configurations of the heating system one or more exhaust fans may be utilized.

Abstract: A combustion system for a portable forced air heater having two frusta-conical sections attached to a circular burner tube, wherein each frusta-conical section has pre-determined vent hole patterns that allow the gas heater to have a variable burn rate.

Abstract: Gas cooking appliance comprising a gas burner equipped with a gas injector 1 fixed to a support 3 and a gas supply tube 2; the support is a sheet metal plate 3 with a through-aperture 4; the injector 1 is fixed to the end of the tube 2; the injector 1 and/or the tube 2 extend through the aperture 4 with the injector 1 and tube 2 one on each side of the plate 3; and a radial annular flange (6) is provided on the tube 2 and situated under the plate 3, being clamped in a sealed fashion against the peripheral edge of the aperture 4 and/or bearing surface 12 of the injector 1 so as to seal between the tube 2 and the injector 1 and between the top and the underside of the plate 3 around the edge of the aperture 4, and to hold the injector 1 secured to the tube 2 centrally in the aperture 4 in a predetermined axial position above the plate 3.

Abstract: A diffuser for a gas duct burner having a fuel pipe and a plurality of stabilizers includes a plate having first and second spaced apart ends defining a length, and first and second spaced apart sides defining a width. The plate has a first portion having a uniform width which is disposed adjacent to the stabilizer and a second portion having a variable width.

Abstract: Torch tip for a torch, said tip adapted to be in fluid communication with a fuel gas and oxygen source for generating a flame, the torch tip including a tubular or substantially tubular body having a plurality of spaced orifices therein, at least one of the orifices being formed in a planar surface so as to allow the formation of a circular orifice therein, the orifice thereby emitting, in operation, a stable and even flame. In a preferred embodiment, all of the orifices are so formed, and direct a flame towards a common point.

Abstract: A pulsating combustor has a plurality of annular plate elements (12), which are stacked in spaced vertical alignment so as to define a central space (14). There is a plurality of slot-like passages (18), one such passage between each adjacent pair of elements. There is at least one combustion chamber (21) in communication with at least one slot-like passage. Fuel and combustion air are fed into the combustion chambers. There is a spark plug for igniting a fuel-air mixture in the combustion chamber. Preferably there is a first housing (24) defining the combustion chamber and another housing defining a collection chamber for combustion gases emerging from the passages.

Abstract: A gas-fired infra-red burner has a dome-shaped wire mesh burner screen bulging out of the plane of the burner opening away from a plenum. This bulge or dome effect allows the screen to undergo controlled thermal expansion without any rippling, waviness or other undesirable deformation of the screen. A metal blocking plate is secured to the center of the screen and blocks the flow of gas therethrough to create a non-radiating zone at the center of the burner, thus providing even heating over the surface of the food being cooked. A plurality of creases radiate from the approximate center of the plate in a star-shaped pattern, and the plate is bent about several of the creases to give it a concave surface which contacts the screen. When heated, the creases grow in height so that the overall horizontal dimensions of the plate do not increase as much as would a flat plate.

Abstract: The invention describes a tubular burner consisting of a cylindrical tubular body initially open at either end into which a distributor component can be slidingly fitted. The tubular body is provided with rows of apertures over a narrow area of the uppermost surface thereof to give the burner a flame strip. The distributor is substantially the same axial length as the tubular burner body but of smaller cross-sectional dimension than said body allowing for sliding fitment of the distributor inside the burner body. In accordance with the invention, the distributor has a first tubular portion and a second extension portion which is effectively a continuation of the upper surface of said first tubular portion, and both the tubular portion and extension portion of the distributor are provided with axially aligned flanges on either aide having a number of perforations.

Abstract: According to the invention, in burners having a swirl generator (100), a mixing tube (220) and a combustion chamber (30), the transition from the mixing tube (220) to the combustion chamber (30) is designed with a variable radius over the circumference of the mixing tube (220). As a result, it is possible to form the flame in various shapes—from a circle to an ellipse with a ratio of width to height of 3 at most. The number of burners in a gas turbine may thus be advantageously reduced. Burners of existing gas turbines may be converted in a simple manner.

Abstract: Apparatus and method for mixing fuel and an oxidant for use in an autothermal reformer that provides hydrogen to a fuel cell. The apparatus includes a mixing vessel (10), a first inlet (4) to the mixing vessel for movement of gaseous fuel or oxidant therethrough, a second inlet for movement of gaseous fuel or oxidant therethrough, and an exit (60) from the vessel adjacent the autothermal reformer. The discharge ends of the inlets are spaced apart from each other and from the exit which is near a POX reactor (61) that combusts the mixture of fuel and oxidant exiting from the mixing vessel. The first inlet is comprised of a plate (26) with a plurality of tubes (24) extending therefrom through which fuel or oxidant passes.

Abstract: A burner having an elongate, generally tubular sheet metal body having an inlet end, a closed distal end and a tubular segment extending between the ends. The inlet end is formed to define a gas orifice holder which is adapted to mount a gas orifice element. The inlet end is further formed to define at least one primary air opening arranged to admit primary air from a source of primary air. A bluff body is located downstream from the gas orifice element and is positioned such that gas emitted by the orifice impinges on the bluff body. Rows of flame ports are defined in the tubular segment and are arranged to create a desired predetermined flame pattern. When used as a fireplace burner the flame ports may be slot-like in construction and include tabs which determine the effective size of the ports.

Abstract: Improved burner performance is achieved by providing an atmospheric gas burner with a spiral-shaped burner body. A plurality of ports is formed in the burner body so as to be in fluid communication with the burner's internal chamber. Preferably, the burner body includes a substantially cylindrical hub section and an arm section that is joined at one end to the hub section and bends around the hub section.

Abstract: Increased turndown ratio is achieved by providing an atmospheric gas burner having a burner body with a plurality of ports formed therein and a fuel flow divider disposed in the burner body. The fuel flow divider defines a primary fuel chamber and at least one secondary fuel chamber, wherein the secondary fuel chamber is in fluid communication with at least one of the ports and the primary fuel chamber is in fluid communication with the remaining ports. A first mixing tube introduces a fuel-air mixture into the primary fuel chamber, and a second mixing tube introduces a fuel-air mixture into the secondary fuel chamber.

Abstract: A fuel gas burner is provided having a stable flame that undergoes complete combustion in a reduced length combustion region and chamber. The fuel gas burner operates over a wide modulation range with excellent stability and efficiency, and is suitable for water heating systems and other applications.

Abstract: A gas burner for cooking areas includes a lower part and an upper part. The upper part has gas repulsion ducts with gas outlet openings for gas flames. The upper part is rotatably mounted on the lower part by a compressed-air bearing configured to apply a compressed-air cushion to pneumatically lift the upper part off the lower part for allowing contactless turning of the upper part in relation to the lower part about an axis of rotation. The gas repulsion ducts are formed to drive the upper part in relation to the lower part about the axis of rotation by gas flowing through the gas repulsion ducts at positive pressure. Such a configuration makes it possible to evenly distribute the heat of the flames in the periphery of the burner and to minimize minimum gas burner output by using less flames.

Abstract: A burner apparatus includes a foraminous burner surface having a multitude of openings through which flames can extend. The burner surface is irregularly shaped so that flames extending from the openings are directed in an irregular pattern whereby eddy currents are generated and effectively disrupt oscillation of the flames to result in reduced noise generation from flame oscillation.

Abstract: A burner having an elongated cylindrical body closed at one end with a plurality of ports spaced apart in two rows along the upper segment of the body, said ports formed by punching. The ports have an upper edge and a lower edge wherein the lower edge is displaced a first distance below the upper edge and a second distance beyond a vertical axis tangent to the upper edge. Accordingly, flames are emitted substantially sideways out of the cylindrical body and any drippings on the tube are directed away from the cavity of the cylindrical body.

Abstract: A tubular burner has a body comprising a diffuser portion provided with openings for discharging a mixture of air and fuel fed to the body through a Venturi tube arranged inside the body. The body has a cross section shaped in such a way that a distance between an outer wall of the Venturi tube and an inner wall of the body, when measured in a radial direction of the Venturi tube, has a first value substantially constant over a first portion of a perimeter of the Venturi tube and a second value greater than the first value over a second portion of the perimeter. A chamber is defined in the second portion between the outer wall of the Venturi tube and the inner wall of the body. The mixture passes through the chamber before being discharged through the openings. The chamber is delimited at a bottom thereof by laminar flow generating means for generating a substantially laminar flow of the mixture.

Abstract: The technical field of the invention is that of making “in-stream” burners which are placed directly inside a duct carrying a flow of gas, with the burners serving to heat the gas and being placed as burner rails that are generally made up of individual blocks. Such burners comprising a pipe on an axis XX′ and suitable for extending transversely across the flow direction of the gas, the pipe being fed with a fuel gas and being pierced by at least two holes in alignment on a common generator line, the burner also having a flame stabilizer formed by two deflector-forming fins diverging on either side of the generator line. According to the invention, at least one of the holes is extended by a tube extending beyond the outer edges of the fins and pierced by at least one fuel gas ejection orifice at its distal end.

Abstract: In a gas-burning apparatus, such as a furnace, a device for reducing NOx emissions includes a cup member mounted proximate to an inlet to a combustion chamber of the apparatus and a perforate member attached to the cup member and located in the combustion chamber at a predetermined distance inwardly from the inlet. The perforate member has a plurality of holes to define a mesh pattern through which the flame and other products of combustion are constrained to pass within the combustion chamber. The perforate member acts as a heat sink to reduce the flame temperature, thereby inhibiting NOx production.

Abstract: A method for delivering fuel oil from a pressurized fuel oil source to an airblast atomizer subassembly on a low firing rate fuel oil burner includes providing a flow control device having a body defining a bore extending between and inlet end of the bore and an outlet end of the bore. The flow control device includes a rod disposed coaxially within the bore in a close fitting relationship. At least one of the bore and the rod is threaded (i.e., includes a groove extending along a helical path) to define a passageway extending along a circuitous, helical path intermediate the input and output ends of the bore through which the fuel oil must pass in flowing from the input end to the output end. The passageway has a size and shape adapted to achieve a desired rate of flow of the fuel oil to the airblast atomizer subassembly (e.g., less than 1.0 gallons per hour and typically less than 0.5 gallons per hour). The method proceeds by delivering the fuel oil through the passageway in the flow control device.

Abstract: In a method of, and an appliance for, operating a burner (26), in which a combustion air flow (14) transports fuel into a combustion chamber (28) where the fuel is burnt, the formation of coherent flow instabilities of the combustion air flow (15) after emergence into the combustion chamber (28) is prevented by perturbation air (22) being injected into the combustion air flow (15).

Abstract: The invention describes a tubular burner consisting of a cylindrical tubular body initially open at either end into which a distributor component can be slidingly fitted. The tubular body is provided with rows of apertures over a narrow area of the uppermost surface thereof to give the burner a flame strip. The distributor is substantially the same axial length as the tubular burner body but of smaller cross-sectional dimension than said body allowing for sliding fitment of the distributor inside the burner body. In accordance with the invention, the distributor has a first tubular portion and a second extension portion which is effectively a continuation of the upper surface of said first tubular portion, and both the tubular portion and extension portion of the distributor are provided with axially aligned flanges on either aide having a number of perforations.

Abstract: A flow divider for use in a gas burner assembly supported in an opening in a furnace wall has injected fluid, such as gas and/or air, flowing through an inner burner pipe then outwardly through a plurality of openings for burning along the surface of a wall thus providing a near uniform radiant heat energy to the furnace. The flow divider has a plurality of nested members and a plurality of in-line members to divide the flowing gas and/or air to improve distribution and to promote more uniform mixing of the gas and air.

Abstract: A gas-fired burner wherein a back plate having at least one inlet tube is connected with respect to a flameholder plate having a plurality of ports. The flameholder plate and the back plate form a plenum. A plurality of mixing baffles are formed within the plenum and between the back plate and the flameholder plate. A radiation plate is also connected with respect to the flameholder plate, the radiation plate and flameholder plate forming a combustion chamber with at least one gas flow boundary serving as a heat radiating surface.

Abstract: A gas burner assembly for connection to a gas source includes a burner body having a sidewall and a main gas conduit. The burner body further includes a number of primary burner ports disposed within the sidewall, each for supporting a respective main flame. Additionally, a main fuel chamber is disposed within the burner body to provide fuel to the primary burner ports. A burner cap is disposed atop said sidewall. A stability channel is disposed within an outer portion of the burner cap. The stability channel is positioned adjacent the primary burner ports to capture a supply of gas and hot products from the burner assembly to re-ignite the primary burner ports after flameout. This configuration creates a repository of fuel and combustion products during normal burner operation within the stability channel for re-igniting the primary burner ports after flameout, thereby reducing the sensitivity of the burner assembly to pressure disturbances, while allowing a symmetric appearance to be maintained.

Abstract: A gas burner that produces a yellow flame for use in a fireplace assembly, including front and rear non-combustible logs and a cross-over log supported atop the front and rear logs. The burner includes an elongate, generally tubular sheet metal body having an inlet end, a closed distal end and a tubular segment extending between the ends. The inlet end is formed to define a gas orifice holder which is adapted to mount a gas orifice element and to define at least one primary air opening arranged to admit combustion air into the tubular burner segment. A bluff body is located downstream from the gas orifice element and is positioned such that gas emitted by the orifice impinges on the bluff body. Rows of slot-like flame ports are defined in the tubular segment and are arranged to create a desired predetermined flame pattern and include tabs which determine the effective size of the ports.

Abstract: All-gas burner 1 the shape of the peripheral wall 9 of which is not circular in order to increase the heat exchange surface with the item to be heated. The ejection orifices 11 which cross this peripheral wall are created so as to permit a substantially complete combustion of the gas.

Abstract: A gas burner is disclosed. The gas burner includes a burner body including a pair of adjoining metal stampings that form a serially connected gas supply passage, venturi region, and plenum chamber, the gas supply passage defining at least one air supply hole for introducing air into the gas supply passage. A burner port is defined by integrally formed recesses in each adjoining metal stamping, the burner port being in fluid communication with the plenum chamber and being oriented about 90 degrees with respect to the central axis of the burner. The gas burner is fabricated from a pair of adjoining sheet metal halves. An alternate gas burner includes a tapered burner port which provides a more uniform flame height because it compensates for velocity variations in the flowing air fuel mixture. A divider plate is also included in the port which improves flame stability.