Abstract: The present invention relates to a jet burner for gaseous fuels with a gas supply and a burner surface (1) permeable for said fuel and on which fuel burns, wherein said burner surface (1) is formed heterogeneously and comprises at least two different surface areas, wherein one or several first surface areas (3) are permeable for said fuel, whereas one or several second surface areas (2) are impermeable for said fuel. Moreover, the present invention pertains to a method for manufacturing a jet burner for gaseous fuels with a correspondingly characterized burner surface.

Abstract: Disclosed is a high efficiency burner and an apparatus for over-cladding an optical fiber pre-form using the same. The high efficiency burner heating an optical fiber pre-form includes burner covers, burner bodies arranged between the burner covers, and fuel dischargers arranged in at least two rows between the burner bodies, and divided by a partition, respectively.

Abstract: A water heater having improved operating characteristics and lower costs of manufacturing is described. The water heater has an unified combustion chamber and burner construction with a ceramic fiber matrix burner.

Abstract: A lining for the combustion chamber of a heating device, particularly a vehicle heating device, includes at least one lining member formed for fuel forwarding by capillary action, with at least one fuel receiving region and a fuel flow guiding arrangement provided in the at least one lining member for influencing the flow direction of the fuel.

Abstract: A catalytic heater 10 has an insulation pad 36 and a catalyst pad 34 mounted in face-to-face relation within an enclosure 11 having an open front face 20. A starter 48 is mounted within the catalyst pad and is effective for preheating of the catalyst pad. Fuel gas is supplied to the rear face of the insulation pad and air is supplied to the front face of the catalyst pad, so that a catalytic reaction occurs generally when the catalyst pad and sear the ope front face. After the catalytic reaction begins, electrical energy is ceased to the starter. The starter preferably comprises a quartz-halogen lamp of a relatively small size which is mounted within the catalyst pad.

Abstract: A catalytic combuster having a mixing section upstream of a combustion section. The mixing section includes a multi-port injector for injecting a first reactant gas into the mixing section in a plurality of directions perpendicular the direction or flow of a second reactant gas.

Abstract: Apparatus for storing a combustible gas including a pressure storage vessel, a pressure relief valve communicating with the storage vessel for venting the gas from the vessel when the pressure therein is too high, and a catalytic reactor communicating with the pressure relief valve to catalytically combust the gas exiting the valve and thereby reduce the amount of such gas that enters the environment.

Abstract: A pyrolysis heater particularly for the cracking of hydrocarbons in the production of olefins has a burner arrangement in the firebox which directly heats the hearth of the firebox such that it becomes a radiant surface. This improves the heat flux in the lower portion of the firebox and produces a more uniform vertical heat flux profile over the firebox elevation. The base burners may fire horizontally across the hearth or may comprise porous ceramic burners as a part of the hearth. The base burners operate along with vertically firing hearth burners and optional wall burners in the upper portion of the firebox.

Abstract: A gas burner has a gas distribution section, an inlet to the gas distribution section connected to a supply of combustible gas, a plurality of outlets, and a gas diffuser. The gas distribution section includes at least one tubular member having a substantially flat first side and formed into a closed loop-shape. In one embodiment, the burner outlets are slots arranged along the first side and oriented substantially transverse to the axial direction of the tubular members whereby a locally uniform flame front is provided at each outlet. The gas diffuser is disposed adjacent the burner inlet to facilitate a uniform flame front along the entire gas distribution section by smoothing out fluctuations or variations in the incoming gas flow.

Abstract: There is provided a catalytic combustion apparatus that allows power consumption of a carburetor heater to be significantly reduced, and allows a fuel consumption amount to be reduced. A catalytic combustion apparatus including: a fuel tank 1 for feeding fuel and others, an air feeding fan 5 for feeding air and others, a carburetor 8 for evaporating the above described fuel, a gas mixture space 15 that holds the above described evaporated fuel and the above described air, a catalytic combustion unit 17 adjacent to the above described gas mixture space, and a catalyst heating element 10 provided in the gas mixture space 15, characterized in that the catalyst heating element 10 has a first heating compartment 11 and a second heating element compartment 12 provided from upstream to downstream of a flow of the above described gas mixture, and that the compartments carry catalysts on all or part thereof and are provided with a first gas mixture vent 13 and a second gas mixture vent 14.

Abstract: A gas burner has a gas distribution section, an inlet to the gas distribution section connected to a supply of combustible gas, a plurality of outlets, and a gas diffuser. The gas distribution section includes at least one tubular member having a substantially flat first side and formed into a closed loop-shape. In one embodiment, the burner outlets are slots arranged along the first side and oriented substantially transverse to the axial direction of the tubular members whereby a locally uniform flame front is provided at each outlet. The gas diffuser is disposed adjacent the burner inlet to facilitate a uniform flame front along the entire gas distribution section by smoothing out fluctuations or variations in the incoming gas flow.

Abstract: A low-cost, high-mass-productivity catalytic combustion apparatus having a construction that permits easy maintenance is realized. There is provided a catalytic combustion apparatus in which, by means of a combustion chamber having a fuel supply portion 1 and a combustion air supply portion on the upstream side thereof and a combustion gas exhaust port on the downstream side thereof and a catalytic combustion portion with an upstream surface and a downstream surface provided in the combustion chamber, the upstream surface and the downstream surface being substantially parallel to each other, a fuel-air mixture supplied to the interior of the combustion chamber is caused to react to liberate heat.

Abstract: A small microcombustion heater which can realize reliable combustion. The heater has a premixed gas passage which reaches a combustion chamber, and a passage for a combustion gas drawn from the combustion chamber. The passages are arranged in a spiral form in a manner such that a heating wall is provided between the passages. The width of the premixed gas passage is a quenching distance or less, where the quenching distance is determined depending on the premixed gas. The heater has two outer faces for holding the spiral passages from both sides of the upper and lower edges of the heating wall, and at least one of the outer faces is a heating surface for emitting radiant heat. Typically, the spiral passages are placed between a heat-resisting heating plate and a heat insulating plate, and an outer face of the heat-resisting heating plate functions as the heating surface.

Abstract: An infrared rays gas burner comprises a main member having a box which has a base seat and a cover, two non-asbestos pads, ceramic planks and guiding device. The non-asbestos pads is mounted the base seat and the ceramic planks rests on the non-asbestos pad and the cover is secured to the base seat with stop portions thereon against the ceramic plank. A gas mixing tube, which works as a Venturi tube, is mounted on the base seat to inject gas into the base seat. The guiding device is mounted in the base seat, which has guiding portions and outlets thereon for spreading the gas injected from the gas mixing tube in the base seat equally.

Abstract: A heating unit has a cartridge that constitutes a single component, which can be readily removed and replaced with a new cartridge. The cartridge is a plurality of non-flammable layers bound together in a border. The layers include a stainless steel mesh located above a layer of ceramic wool. With the cartridge, replacement can be accomplished in approximately fifty minutes compared to a downtown of a week or more previously.

Abstract: A portable heater adapted for use in a recreational enclosure or temporary work enclosure includes a housing having an air inlet on the lower front face. A gas supply is partially enclosed by the housing which provides propane to the mouth of a burner venturi located within the housing. Air is drawn through the air inlet and also enters the mouth of the burner venturi. The air and gas are mixed thoroughly as they travel upwardly through the burner venturi. A chimney effect increases fresh air flow velocity into the burner venturi and allows the heater to operate at a reduced fuel gas pressure. Upon exiting the burner venturi, the air/gas mixture is to a plenum and radiant surface where combustion takes place. Any conventional means may be provided to ignite the air/gas mixture in order to cause combustion. The combustion products deflect off a deflector, which is cooled on a rear face by air flow through the housing, which decreases the temperature of the combustion products before exiting an outlet.

Abstract: A combination of a flame arrestor with a reflection suppressor is provided which not only arrests an advancing flame front, but also suppresses or mitigates a reflection wave that is generated by a pressure wave that passes through the combination and continues on to a pipe restriction what generates a reflection wave that proceeds back to the combination. At the combination, the reflection suppressor suppresses and/or mitigates the reflection wave, thereby avoiding a heightened pressure in the combination that could cause a re-ignition and a new flame front and pressure front. The reflection suppressor has a tapered profile that permits a pressure wave to pass along and past the reflection suppressor as it leaves the combination but that impedes and mitigates a returning reflection wave produced by the pressure wave striking a pipe restriction and causing such a returning reflection wave.

Abstract: A catalyst combustion apparatus, includes: a fuel feed course for feeding liquid fuel; an air feed course for feeding air; a mixing unit for mixing fuel to be fed from the fuel feed course with air to be fed from the air feed course; a vaporizing unit for heating mixture-obtained by mixing in the mixing unit to vaporize the liquid fuel; a catalyst heating unit disposed on the downstream side of the vaporizing unit in contact with or in close proximity to the vaporizing unit in terms of conduction of heat, for carrying an oxidation catalyst component; and a catalyst combustion unit provided on the downstream of the catalyst heating unit, having a multiplicity of conductive holes, and the vaporizing unit is capable of utilizing heat from the catalyst heating unit.

Abstract: In a fuel gas burner, a reduction of NOx emissions is brought about by the combined use of both a catalyst and a radiation baffle. The catalyst and baffle are located in serial flow relationship such that each contributes to the NOx reduction function without the creation of undesirable conditions. The catalyst is located upstream of the flame and the amount of primary air supplied to the burner is controlled so as to bring about a reduction of NOx emissions while at the same time not allowing the temperature of the catalyst to exceed a threshold limit, thereby ensuring an acceptably long life and durability of the catalyst. The radiation baffle is located in the flame to radiate heat away therefrom and lower the temperature thereof to reduce NOx emissions, with the mass of the baffle being limited such that no significant levels of CO are generated.

Abstract: Infrared emitter with luminous radiation for a supply of gas at very low pressure and of primary atmospheric air via venturi, said supply comprising at least one gas injector, an injector holder, a safety valve, a gas supply connector, especially for raised heating appliances for directional heating towards the ground and/on the sides in the agricultural, industrial, craft and service sectors, characterised in that it comprises; a geometrical structure comprising at least one first (1), second (2), third (4) and fourth (5) concentric enclosure, a substantially horizontal upper plate (6) below which the said at least first (1), second (2), third (4), fourth (5) enclosures are fixed concentrically to said plate, fitting the one inside the other, a central opening (7) leading the air-gas flow perpendicularly to said plate, into the interior space created by the first enclosure (1).

Abstract: There is disclosed a novel flat heating surface type gas stove which is capable of heating a heating substance across a heat resistant glass at a practically applicable heating efficiency, thereby overcoming any inconvenience resulting from the exposure of flame and facilitating the cleaning of the gas stove. This gas stove 10 comprises a heat resistant glass top plate 12 which is disposed over a burner 15, wherein a gas-permeable porous body 40 is disposed below said top plate 12, and a space between said top plate 12 and a surface of said gas-permeable porous body 40 is assigned to a combustion space S. Combustion gas generated is designed to be discharged through said gas-permeable porous body 40. As high-temperature combustion gas passes through said gas-permeable porous body 40, radiant heat B is generated from the surface of said gas-permeable porous body 40. Since the heating substance 4 is heated by both of heat conduction and radiation, high heating efficiency can be achieved.

Abstract: A low-cost, high-mass-productivity catalytic combustion apparatus having a construction that permits easy maintenance is realized. There is provided a catalytic combustion apparatus in which, by means of a combustion chamber 200 having a fuel supply portion 1 and a combustion air supply portion 2 on the upstream side thereof and a combustion gas exhaust port 4 on the downstream side thereof and a catalytic combustion portion 5 with an upstream surface and a downstream surface provided in the combustion chamber 200, the upstream surface and the downstream surface being substantially parallel to each other, a fuel-air mixture supplied to the interior of the combustion chamber 200 is caused to react to liberate heat.

Abstract: A burner assembly that overcomes problems experienced in the prior art. One embodiment provides a burner assembly for burning a fuel gas from a gas source. The assembly has a burner body with a contoured upper surface and a burner pan with a gas inlet aperture therein. The burner body is connected to the burner pan. The burner body and burner pan are spaced apart to form a gas distribution chamber therebetween. The burner body has a plurality of gas apertures extending between the distribution chamber to an upper surface of the burner body. The gas apertures are positioned to allow the fuel gas to flow to selected areas on the burner body's upper surface for combustion to create a desired flame at selected locations relative to the upper surface. In one embodiment is a contoured upper surface with a plurality of peaks and valleys forming simulated coal or ember members.

Abstract: A catalytic gas combustion device for an appliance for personal use with a gas supply device and a catalyst connected to the gas supply device is disclosed. To ignite the gas/air mixture and therefore to initiate catalytic combustion at the catalyst, an ignition device which can be controlled by an ignition system is provided. The gas supply device has a bypass for branching off part of a gas stream which flows onto the ignition device. In this way, the ignition system is actuated even shortly after the gas valve device is opened, and the catalyst is brought to its operating temperature as a result of the explosion of the gas/air mixture.

Abstract: A combustion system for a hybrid solar receiver comprises a pre-mixer which combines air and fuel to form an air-fuel mixture. The mixture is introduced tangentially into a cooling jacket. A burner plenum is fluidically connected to the cooling jacket such that the burner plenum and the cooling jacket are arranged in thermal contact with one another. The air-fuel mixture flows through the cooling jacket cooling the burner plenum to reduce pre-ignition of the air-fuel mixture in the burner plenum. A combustion chamber is operatively associated with and open to the burner plenum to receive the air-fuel mixture from the burner plenum. An igniter is operatively positioned in the combustion chamber to combust the air-fuel mixture, releasing heat. A recuperator is operatively associated with the burner plenum and the combustion chamber and pre-heats the air-fuel mixture in the burner plenum with heat from the combustion chamber.

Abstract: It is an object of the present invention to reduce the maintenance costs of burners. When repairing a burner 20, first, a door 2a provided on a front surface of a main housing 2 is opened. Next, a lower coupler 77b of a supply portion 70 is loosened and the screws of a flange portion 74b of a mixture supply duct 74 are removed, and the mixture supply portion 74, which has become a single unit with a connection duct 77, is removed from a gas duct 76, a tube 73 that is provided at the front end of an air duct 72, a front panel 83, and a burner unit 23. Then, all nuts on the front of the container 80 are removed and the front panel 83 is removed from the container 80. Next, the brim portions 20a of the burner 20 are slid over lower rails 90b and the burner is pulled out obliquely upward (on a substantially horizontal plane) from the access portion 85 on the front of the container 80, so that repairs to the burner 20, such as replacing its ceramic plate 22, can be carried out.

Abstract: A catalytic combustor (34) for a gas turbine engine (30). A fuel-air mixture (50) is reacted on a catalytic surface (54) of a catalytic heat exchanger module (36) to partially combust the fuel (48) to form heat energy. The fuel-air mixture is formed using compressed air (44) that has been pre-heated to above a reaction-initiation temperature in a non-catalytic cooling passage (46) of the catalytic heat exchanger module (36). Because the non-catalytic cooling passages (46) provide the necessary pre-heating of the combustion air, no separate pre-heat burner is required. Fuel (48) is added to the pre-heated air (44) downstream of the non-catalytic cooling passage (46) and upstream of the catalytic surface (54), thereby eliminating the possibility of flashback of flame into the cooling passages (46). Both can-type (60) and annular (80) combustors utilizing such a combustion system are described.

Abstract: A burner module for delivering a flow of chemical reactants to a combustion site of a chemical vapor deposition process includes a plurality of substantially planar layers. The substantially planar layers are arranged in a generally parallel and fixed relationship and define an inlet, an outlet and a passage fluidly connecting the inlet and outlet. At least one of the layers is a distribution layer having a plurality of apertures therethrough and fluidly communicating with the passage. The plurality of apertures collectively define a non-uniform pattern arranged and configured to improve the uniformity of a flow out through the outlet. Burner adapter and assembly embodiments are also included.

Abstract: An infrared irradiating heater having a radiating body with a housing comprised of a ceramic and having a planar radiating surface, a multiplicity of substantially flame-free passages extending perpendicular to the surface and opening at the surface, and a rear surface, the passages extending to the rear surface, the passages having lengths less than 300 mm, the total cross sectional area of the passages at the planar radiating surface being in a ratio to the area thereof in excess of 50%, and the passages having length to maximum diameter ratios of at least 5. A burner plate spaced from the rear surface defines a combustion chamber with it so that the combustion is effected substantially only in this combustion chamber and the passages are free from flame and serve as radiator surfaces.

Abstract: A catalytic combuster having a mixing section upstream of a combustion section. The mixing section includes a multi-port injector for injecting a first reactant gas into the mixing section in a plurality of directions perpendicular the direction or flow of a second reactant gas.

Abstract: An infrared heating unit which finds particular application in paper making equipment for coating drying and moisture profile control. In one embodiment, the heating unit comprises a housing and a heat resistant, porous ceramic matrix received in the housing having an inner surface, side walls and an external surface. The inner surface of the ceramic matrix and the housing cooperate to define a chamber. There is at least one resilient anchoring strip extending between the ceramic matrix and the housing about the perimeter of the ceramic matrix to retain the ceramic matrix in place within the housing and seal the edges of the ceramic matrix. An inlet to the housing is provided to admit a gas/air combustion mixture to the chamber. The gas/air mixture passes through the ceramic matrix to burn adjacent the external surface of the ceramic matrix to heat the external surface to incandescence.

Abstract: A burner for liquid fuel has an electric heating device for start up heating a fuel vaporization chamber to a selected temperature, a flame retention baffle being fitted on the vaporization chamber with a temperature sensor sensing temperature of the vaporization. When the vaporization chamber is heated to a desired temperature of about 350 degrees celsius by deflected hot exhaust gas products from the burner operation and such temperature is sensed, the sensor outputs a signal so that the electric heating device can be shut down, vaporization chamber heating then being maintained by the deflected hot exhaust gas flow.

Abstract: The invention concerns a catalytic combustion afterburner made of porous material, comprising in its lower part a substantially axial cavity for receiving a taper designed to convey to the burner a combustible liquid, and in its upper part an annular peripheral zone bearing a catalyst and enclosing a central zone without catalyst forming a vaporizing zone. The afterburner comprises in its upper part an open duct, communicating the cavity upper part with the outside air.

Abstract: A gas-fired infrared radiation emitter with a frame, a screen removably attached to the frame, and a device for locking the screen to the frame. At least three receptacles are connected to each side of the frame, and at least one support is connected to each end of the frame. Three retaining bars extend from one side of the frame to the other and are used to lock secure the screen between such bars and the frame; and a fourth retaining bar extends from one end of the frame to the other and also secures the screen.

Abstract: There is provided a catalytic combustion apparatus that allows power consumption of a carburetor heater to be significantly reduced, and allows a fuel consumption amount to be reduced. A catalytic combustion apparatus including: a fuel tank 1 for feeding fuel and others, an air feeding fan 5 for feeding air and others, a carburetor 8 for evaporating the above described fuel, a gas mixture space 15 that holds the above described evaporated fuel and the above described air, a catalytic combustion unit 17 adjacent to the above described gas mixture space, and a catalyst heating element 10 provided in the gas mixture space 15, characterized in that the catalyst heating element 10 has a first heating compartment 11 and a second heating element compartment 12 provided from upstream to downstream of a flow of the above described gas mixture, and that the compartments carry catalysts on all or part thereof and are provided with a first gas mixture vent 13 and a second gas mixture vent 14.

Abstract: A ceramic hearth burner comprising a cast ceramic main body arranged to be situated within a fire place. The main body has a first chamber and a second chamber. A combustion air regulator is arranged to regulate the amount of air into the first chamber and an outlet is arranged for controlling the flow of fuel into the second chamber. An ignition plate encloses the second chamber which has a plurality of holes for releasing the fuel therein into an ignition area. At least one portal is arranged to channel the combustion air from the first chamber into the ignition area. The regulator is actuated by differential pressure in the ignition area and in the outside air, the pressure in the ignition area being varied by the amount of fuel being ignited.

Abstract: There is provided a flameless catalytic burner system employing a catalytic bed assembly (20) for catalyzing the oxidation of a fuel stream. The catalytic bed assembly (20) includes first and second retaining members (122, 124) which define a compartment therebetween. The catalytic bed assembly (120) also includes a plurality of catalytic members (126) disposed within the compartment. The first retaining member (122) is formed with an upstream face portion (1220) transversely extending relative to the fuel stream to describe a convex peripheral contour about at least a portion of the compartment. The second retaining member (124) is formed with a downstream face portion (1240) transversely extending relative to the fuel stream to describe a concave peripheral contour about at least a portion of the compartment. The upstream face portion (1220) is greater in surface area than the downstream face portion (1240).

Abstract: Infrared emitter with luminous radiation for a supply of gas at very low pressure and of primary atmospheric air via venturi, said supply comprising at least one gas injector, an injector holder, a safety valve, a gas supply connector, especially for raised heating appliances for directional heating towards the ground and/on the sides in the agricultural, industrial, craft and service sectors, characterized in that it comprises: a geometrical structure comprising at least one first (1), second (2), third (4) and fourth (5) concentric enclosure, a substantially horizontal upper plate (6) below which the said at least first (1), second (2), third (4), fourth (5) enclosures are fixed concentrically to said plate, fitting the one inside the other, a central opening (7) leading the air-gas flow perpendicularly to said plate, into the interior space created by the first enclosure (1).

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 segmented surface-stabilized gas burner features wide modulation of thermal output simply by the independent control of fuel gas flow to each burner segment. The burner also features a porous fiber burner face, preferably having dual porosities, and a metal liner positioned to provide a compact combustion zone adjacent the burner face. The segmented surface-stabilized burner is ideally suited for use with gas turbines not only because of its compactness and broad thermal modulation but also because only the flow of fuel gas to each burner segment requires control while the relative flow of compressed air into the segments of the burner remains unchanged.

Abstract: A gas burner is provided that simulates wood burning fire and the glowing amber effect of real wood or coal burning. The burner comprises a burner pan which is covered by a refractory material. Burner ports are formed through the refractory material.

Abstract: Improved infrared generating matrix constructed of a mixture of non-carcinogenic, high temperature withstanding raw materials. The matrix fibrous components is a blend of at least two materials having a different temperature rating. At least one material is at least about 100 degrees C. above the maximum radiant face operating temperature and at least one material is at least below the maximum radiant face operating temperature.

Abstract: A burner assembly that overcomes problems experienced in the prior art. One embodiment provides a burner assembly for burning a fuel gas from a gas source. The assembly has a burner body with a contoured upper surface and a burner pan with a gas inlet aperture therein. The burner body is connected to the burner pan. The burner body and burner pan are spaced apart to form a gas distribution chamber therebetween. The burner body has a plurality of gas apertures extending between the distribution chamber to an upper surface of the burner body. The gas apertures are positioned to allow the fuel gas to flow to selected areas on the burner body's upper surface for combustion to create a desired flame at selected locations relative to the upper surface. In one embodiment is a contoured upper surface with a plurality of peaks and valleys forming simulated coal or ember members.

Abstract: An improved gas burner for a gas burner assembly and method of making is disclosed comprising a porous burner element extending between a first and a second end. The porous burner element comprises a sintered matrix of metallic fibers. A first end cap is formed from a rigid metallic material and is secured to the first end of the porous burner element. A second end cap comprises a sintered matrix of metallic fibers. The second end cap is secured to the second end of the porous burner element solely by the metallic fibers of the porous burner element bonding with the metallic fibers of the second end cap. In another embodiment of the invention, the porous burner element has a plurality of pleats for increasing the surface area of the porous burner element.

Abstract: In order to realize a catalytic combustion apparatus capable of effectively utilizing radiation from a surface of a catalytic element, providing a higher efficiency of heat exchange, and characterized in superior characteristics of an exhaust gas, a catalytic combustion apparatus according to the invention comprises a catalytic element 7 in the shape of a plate consisting of multiple through-holes for combusting a mixed gas of a fuel gas and air and a combustion chamber 6 accommodating the catalytic element 7, and incorporating a radiated heat receiving plate 11 that is positioned in opposition to either one of two surfaces of the catalytic element 7 as a part of its side walls.

Abstract: Device (1) for the surface emission of infrared radiation, comprising a combustion chamber (2) having a wall (3) made of refractory material, permeable through its thickness, suitable for the passage of a mixture (4) to be burnt (combustible gas (30) plus oxidizer gas (31), for example air) from its upstream face (3a) to its downstream face (3b), and the internal developed surface of which is coated with a catalytic combustion material, and an upstream chamber (5) supplied on one side with the mixture to be burnt and closed on the other side by the catalytic combustion wall. The combustion chamber (2) includes at least one heat exchange wall (6), placed upstream of and facing the catalytic wall (3), in order to receive via its downstream face (6b) at least most of the heat radiated by the upstream face (3a) of said catalytic combustion wall, said heat exchange wall made of refractory material also being permeable through its thickness and suitable for passage of the mixture (4) to be burnt.

Abstract: A process and product for producing an attractive soot-free fire from a specially formed gas pipe embedded in a bed of broken, specially-formulated, tempered glass pieces is provided. The broken glass pieces are preferably formed from a specifically-formulated, tempered glass which, after formation, is broken and then sifted and washed so as to remove any slivers or debris. The gas pipe is preferably formed with two rows of equally spaced openings offset with respect to each other and spaced approximately 90° apart to burn gas in a cleaner and hotter manner. A number of gas pipes may be used and formed in any desired configuration to add to the attractiveness of the soot-free fire produced thereby.

Abstract: A burner assembly for a radiant burner includes a burner tube structure in the form of an elongated burner conduit having spaced inlet and outlet ends. The conduit is adapted and arranged for directing a fuel lean gaseous mixture comprising a portion of the total fluid fuel to be combusted and oxygen therealong from the inlet end to the outlet end. The assembly also includes a main burner nozzle at the outlet end of the conduit, which nozzle has a central axis, a wall extending around a centrally located chamber therein, and a downstream end spaced from the outlet end of the conduit. The main burner nozzle is arranged and adapted for receiving the mixture from the conduit in the chamber and redirecting the same through a plurality of apertures in the wall and into a combustion zone in a direction transverse to the axis and at a velocity which is greater than the flame speed of the gaseous mixture.

Abstract: A catalytic combustion apparatus comprises a combustor 11, a fuel tank 12, a valve 13, and an ignition device 14. The combustor 11 further comprises a gas nozzle 16, an air intake/ejector 17, a mixing chamber 18, a firing chamber 19, an ignition plug 20, a combustion chamber 21, a catalyst for combustion 22 housed inside the combustion chamber 21, and an exhaust port 23. The mixing chamber 18 is made into a straight cylindrical passage, a cylindrical firing chamber 19 is provided in parallel to the mixing chamber 18 so that an opening 24 on the side of the firing chamber 19 communicates with the combustion chamber 21, a burner port 25 is disposed on the boundary between the mixing chamber 18 and the firing chamber 19, and the burner 25 is configured with a catalytic net 25a.

Abstract: A portable heater adapted for use in a recreational enclosure or temporary work enclosure includes a housing having an air inlet on the lower front face. A gas supply is partially enclosed by the housing which provides propane to the mouth of a burner venturi located within the housing. Air is drawn through the air inlet and also enters the mouth of the burner venturi. The air and gas are mixed thoroughly as they travel upwardly through the burner venturi. A chimney effect increases fresh air flow velocity into the burner venturi and allows the heater to operate at a reduced fuel gas pressure. Upon exiting the burner venturi, the air/gas mixture is to a plenum and radiant surface where combustion takes place. Any conventional means may be provided to ignite the air/gas mixture in order to cause combustion. The combustion products deflect off a deflector, which is cooled on a rear face by air flow through the housing, which decreases the temperature of the combustion products before exiting an outlet.