Abstract: An improved gas burner comprising a gas nozzle having a first flame stabilizer mounted to the front end thereof and a plurality of gas blow apertures arranged circumferentially therein adjacent to the first flame stabilizer, a second flame stabilizer having a plurality of secondary combustion air passages arranged in the circumferential end thereof and a primary combustion air passage arranged in the center thereof which is defined by the outer surface of the gas nozzle, and a burner cone accommodating the second flame stabilizer coupled to the inner wall thereof, said gas burner being improved for reducing unwanted nitrogen oxide and/or uncombusted gas, characterized in the positional relation between the flame stabilizer(s) and the gas blow apertures, the novel construction in which the shape of the flame stabilizer is designed for optimum function with association with its positional relation, the novel arrangement in which the flame stabilizer can be controlled for optimum positioning, and the improved bu

Abstract: In a gas-operated premixing burner for the combustion chamber of a gas turbine, the fuel injected within a premixing space (21) by means of a plurality of nozzles (17) is intensively mixed with the combustion air prior to ignition. The nozzles are arranged around a burner axis (10). In order to influence the fuel profile at outlet from the burner in a specific manner, the fuel concentration in the region of the burner axis is kept greater than the average fuel concentration at the burner outlet plane (22). For this purpose, additional burner nozzles (23) are provided in the region of the burner axis (10). The additional burner nozzles (23) can be supplied via a separate fuel conduit (24).

Abstract: An atomizing type burner comprises an air supply tube (11,103) for supplying an air, a combustion cylinder (104,114,115) connected to the open end of the air supply tube (11,103), a fuel supply tube (102) for supplying a fuel at least partially placed in the air supply tube (11,103), a fuel atomizing nozzle (101) formed in the shape of a funnel and connected to the open end of the fuel supply tube (102), a passage formed by the air supply tube (11), the combustion cylinder (104), the fuel supply tube (102) and the fuel atomizing nozzle (101), and a small clearance portion formed in the passage near the fuel atomizing nozzle (101). The small clearance portion is nallower than the front and the rear portions of the passage so as to function as an atomizer.

Abstract: A burner assembly is provided for combining oxygen and fuel to produce a flame. The burner assembly includes a burner block formed to include a flame chamber having inlet and outlet openings, a bypass structure for conducting oxygen outside of the flame chamber to the outlet opening of the flame chamber and structure for discharging fuel into the flame chamber formed in the burner block.

Abstract: A low calorific gas is burned without the need of mixing or burning it with a high calorific gas. The method includes introducing either combustion air or low calorific gas into the mixing chamber, introducing the remainder into the mixing chamber through the perforated nozzles such that it is injected in the radial direction at a high speed from the holes to effect the mixing of the two in the mixing chamber, and injecting the mixed gas into the combustion chamber through the nozzles of the refractory baffle. The stable combustion of a low calorific gas alone by the aid of combustion air without the need of diffusing it into the atmosphere or burning it together with an expensive high calorific gas or oxygen-enriched combustion air is thereby effected, which greatly contributes to energy saving and environmental protection.

Abstract: A diluent injection burner apparatus capable of reducing the nitrogen oxide content in a combustion effluent, the diluent injection burner assembly provided with a burner head having an air flow passage extending therethrough and primary and secondary fuel dispensing nozzles supported within the airflow passageway and adapted to inject fuel into a downstream end portion of the burner head. A diluent manifold assembly is supported by the burner head such that upon combustion of the fuel diluent is tangentially injected into the downstream end portion of the burner head relative to a flame envelope produced by ignition of the primary and secondary fuel so that a diluent shroud is formed about a base portion of the flame envelope.

Abstract: A premixing burner on the double-cone principle consists essentially of two hollow conical partial bodies (111, 112) which are interleaved in the flow direction and whose respective center lines (113, 114) are offset relative to one another. The adjacent walls of the two partial bodies form tangential gaps (20) in their longitudinal extent for the combustion air. Gas inlet openings (117) distributed in the longitudinal direction are provided in the walls of the two partial bodies. The air is guided into the tangential gaps (20) via vortex generators (9) of which a plurality are arranged adjacent to one another. The fuel is introduced into the gaps (20) in the immediate region of the vortex generators (9).Using the novel static mixer which the three-dimensional vortex generators represent, longitudinal vortices without recirculation region can be generated in the inlet gap through which flow occurs.

Abstract: The invention provides a method and apparatus for creating a stable combustion flame from natural gas and an oxygen containing gas which is useful for the pyrometallurgical treatment of finely divided materials such as metal ores. In particular, natural gas and the oxygen containing gas are injected in a manner which forms recirculation zones between the natural gas and oxygen containing gas thereby maintaining the stability of the combustion flame. The apparatus of the invention encourages the formation of the recirculation zones by using a bluff body orifice plate to provide a dead space between the injections of the oxygen containing gas and natural gas. Additional gas injection is used downstream in the combustor to create turbulence and further stabilize the combustion flame.

Abstract: A two stage, atmospherically supplied burner which produces reduced levels of NO.sub.x in applications such as residential water heaters or light commercial applications. A novel, perforated plate first stage burner is disclosed for first stage combustion. A variety of embodiments disclose various approaches to supplying atmospheric to support second stage combustion. A conventional first stage burner is also disclosed with modifications to achieve two-stage, atmospherically supplied combustion.

Abstract: A kinetic dissociator is formed by a primary combustion chamber and a secondary combustion chamber. The primary and secondary combustion chambers are connected by at least one flow stabilization tube. A source of high temperature, high velocity gas is provided by at least one high speed combustion jet axially aligned with the flow stabilization tube such that the jet gas mixes with a process gas passes through the tube and impinges against a conically shaped wall forming a portion of the secondary combustion chamber.

Abstract: An improved two-stage combustion chamber for burning waste hydrocarbons such as crank case oil, spent motor oil, transmission fluid, lubrication dopes, and heavy bodied gear lubes. The combustion chamber is formed from a plurality of spaced apart, stacked annular rings that form a flame containment housing having superheated surfaces. The flame containment housing contains the flame of an atomizing oil burner suitable for burning the variable viscosity waste hydrocarbons. The annular rings include outer walls and inwardly extending flanges that intercept unburned fuel droplets and combustion byproducts, vaporizing the droplets and/or stimulating secondary combustion. The annular rings are removable and replaceable, and are supported in spaced-apart relation by spacers on a plurality of support rods.

Abstract: The flame cone of the present invention is intended to be used with a heater for a grain bin or the like. The heater comprises a housing having one or more housing walls and having an inlet end and an outlet end. A blower is provided for forcefully moving air from the inlet end through the housing and out of the outlet end. A burner is provided within the housing for heating air moving through the housing. A flame diverter is positioned within the housing downstream from the burner for diverting the flame outwardly from the burner toward the walls of the housing. The diverter comprises a cone-shaped structure having a plurality of spaced slats diverging outwardly from the burner and toward the walls of the housing. More specifically, the improvement of this invention comprises a burner cone having an apex and an outer base spaced axially from the apex with the slope of the burner cone being generally similar to the slope of the diverter.

Abstract: A burner assembly combines air and fuel to produce a burn firing into a downstream tube. The assembly includes a funnel formed to include an inlet, an outlet, and an air and fuel mixing region therebetween. The funnel also includes a cylindrical intake end at the inlet and a conical side wall mating with the cylindrical intake end and converging from the cylindrical intake end toward the outlet to fire a burn initiated in the mixing region into a tube coupled to the outlet of the funnel. The assembly also includes a system for supplying a gaseous fuel to the mixing region in the funnel and a system for introducing combustion air into the mixing region through the inlet of the funnel. The combustion air mixes with the gaseous fuel in the mixing region to produce a combustible mixture.

Abstract: A burner has a burner tube and a nozzle holder mounted in one end of the burner tube. An igniter is positioned within the nozzle holder and acts to ignite any of the multi-liquid fuels which may be used with the burner. A nozzle emits atomized liquid fuel under the venturi effect of the nozzle with compressed air being supplied to the nozzle. Primary air holes extend circumferentially around the nozzle holder to admit air radially which passes directly to the burner tube. Secondary air holes extend around the inside circumference of the burner tube on the secondary air injection plate and admit air axially to the burner tube.

Abstract: A burner assembly has a combustion chamber in which combustion takes place in an elongate centrally disposed combustion tube. An outer housing encases the combustion tube and provides an annular space between an inner wall of the housing and the combustion tube. Part of the exhaust gases exiting from the combustion tube are diverted from the downstream end thereof to be returned through the annular space to the upstream end of the combustion tube. Fuel is injected into the diverted exhaust gases, volatilized when in liquid form and mixed with the diverted gases. The fuel and gas mixture is further combined with a buffer gas and becomes entrained into and mixed with a high velocity of combustion air which is injected into the upstream end of the combustion tube. The flame temperature may be monitored and the quantity of the buffer gas added may be controllably varied based on temperature readings from the monitoring process to minimize the generation of nitrous oxides.

Abstract: A biodegradable plastic material based on cellulose esters and possibly biodegradable carboxylic acid esters, glycol esters or glycol ethers as softener, composed of from about 50 to about 90 weight percent cellulose ester, from about 5 to about 40 weight percent softener, from about 5 to about 30 weight percent polyester and from about 0.5 to about 5 weight percent AQ-nylon. The biodegradable plastic material may also contain organic acids and/or acid esters and/or ethers different from the softener, and other additives, such as flame inhibitors, and is distinguished by excellent biodegradability, injection molding and blow molding characteristics. Also disclosed are articles made of the material of the invention and methods of making such articles. It is preferably molded into thin sheets and transparent plastic articles, preferably into enclosures/containers for oil lamps, eternal flame oil candles, composition lights, other cemetery light designs, votive lights and thin sheets.

Abstract: A fuel-fired, forced air draft induced heating furnace is provided with NO.sub.x reduction apparatus associated with a plurality of combustor tubes forming a portion of its heat exchanger structure. In-shot type fuel burners are spaced apart from and face the open inlet ends of horizontal combustion sections of the combustor tubes. The NO.sub.x reduction apparatus includes a plurality of metal mesh tubes having diameters substantially less than the internal diameters of the combustion tubes. The mesh tubes are coaxially supported within the combustor tubes, adjacent their inlet ends, by elongated support members longitudinally passing through the mesh tubes and having first ends anchored to the combustor tube inlet ends, and second ends slidably resting on internal side surface portions of the combustor tubes.

Abstract: A submergible torch for removing nitrate and/or nitrite ions from a waste solution containing nitrate and/or nitrite ions comprises: a torch tip, a fuel delivery mechanism, a fuel flow control mechanism, a catalyst, and a combustion chamber. The submergible torch is ignited to form a flame within the combustion chamber of the submergible torch. The torch is submerged in a waste solution containing nitrate and/or nitrite ions in such a manner that the flame is in contact with the waste solution and the catalyst and is maintained submerged for a period of time sufficient to decompose the nitrate and/or nitrite ions present in the waste solution.

Abstract: In a combustor including a premixing type combustion burner which has an atomizer for ejecting a liquid fuel together with combustion air to atomize the liquid fuel, the atomizer is comprised of an inner shell to an inner peripheral surface of which the liquid fuel is supplied, an outer shell defining a passage for the combustion air running substantially straightly between the outer shell itself and an outer peripheral surface of the inner shell, and a swirling-flow guide plate for swirling the combustion air passed into the inner shell, while directing it in a downstream direction. The combustor further includes a resistor abruptly decreased in sectional area downstream and provided substantially downstream of the center of the swirling flow and in the vicinity of an outlet of the premixing type combustion burner for providing a resistance to a premixture ejected from the premixing type combustion burner.

Abstract: The present invention provides a burner for a reactor producing synthetic gas for conveying at least two fluids separately to a reaction zone, one serving as fuel and the other as combustive. It comprises a solid element in which are provided holes penetrating to different depths, these holes opening at one of their ends into the reactor and at the other either into fuel supply means or into combustive supply means depending on the fluid conveyed by the hole considered.

Abstract: A three-chambered combustion burner is provided with a seed fuel under pressure to burn simultaneously injected waste products such as incompletely combusted exhaust fumes or air entrained combustible solid waste. An explosive mixture is provided in a first chamber and ignited. The heated and pressurized gas products are ejected into a second smaller combustion chamber into which air is injected. The hot and incompletely combusted products in the second chamber explosively reignite and are ejected into a yet smaller third combustion chamber. Air is again injected into the third combustion chamber wherein the products again explosively reignite to be ejected through a jet nozzle. The heat energy output of the burner or its propulsive momentum thrust may be utilized as appropriate in other applications. The toxicity of the gaseous or solid waste products burnt in the chambers is reduced and oxidized by the injection of air and hydrolization of water also injected with the waste products.

Abstract: A burner structure and a method of operating a burner to reduce the pollutant emissions produced thereby are disclosed. Air and gas are premixed in a manner such that a substantially homogeneous mixture containing excess combustion air results. The velocity of the substantially homogeneous mixture is increased as it passes through the burner causing the "residence time" associated with the formation of the flame to be decreased, i.e., the combustion gases are in the reaction zone of the flame for a significantly shorter period of time, reducing the production of NO.sub.x. In order to prevent the flame from "lifting-off" the burner because of the high velocity of the substantially homogeneous air/gas mixture, flame stabilizing devices and/or a burner structure which provides flame stabilization are utilized resulting in the production of a high heat flux and low pollutant emissions.

Abstract: A combustion apparatus comprises: a large-diameter sleeve-like element forming an incoming passage through which an air/fuel mixture gas flows in a predetermined direction; at least one small-diameter sleeve-like element disposed in the incoming passage, which small-diameter sleeve-like element forms an outgoing passage through which a combustion gas having been issued from the incoming passage flows in a direction counter to the above predetermined direction; an air/fuel mixing unit for issuing the air/fuel mixture gas under a predetermined pressure to a main incoming port located in an upstream side of the incoming passage; an auxiliary incoming unit for issuing a combustion gas produced by a pilot burner to the upstream side of the incoming passage prior to supplying the air/fuel mixture gas to the incoming passage; and a combustion-gas outlet port for discharging the combustion gas having passed through the outgoing passage, which combustion-gas outlet port communicates with an outlet opening of the outgo

Abstract: A device for heating an article such as a heat-shrinkable sleeve (12) by means of a gas torch comprising an element (8) which is mounted on the torch and will deflect hot gases from the torch burner (7) and side arms (9) that are movable between two positions. In one position the article is heated substantially by radiation while in the other position it is heated principally by hot gases which have been produced by the burner and have been deflected by the element.

Abstract: A burner with a conical shape opening in the flow direction is composed of two partial-conical bodies, which are positioned one upon the other and whose centerlines in the longitudinal direction extend offset relative to one another. Because of this offset, a tangential inlet slot to an internal space of the burner is formed in each case over the length of the burner. The fuel supply takes place centrally via a nozzle and tangentially in the region of the inlet slots via, in each case, a fuel line, which is provided with fuel openings which there undertake the injection of the fuel. A duct is formed above each inlet slot and this is equipped with an injector. A further fuel is introduced through this injector. The air/fuel mixture with fuel from the injector and/or fuel from the fuel line flows generally as an air/fuel mixture through the tangential inlet slots into the internal space of the burner. If needed, further mixing with the fuel from the nozzle takes place there.

Abstract: A gasifier (17) is located at a distance (49) from an air aperture plate (35). At the outlet (42) of the gasifier there is a stationary mixing head (29) having a deflector section (31) and lateral outlets (33). Fuel is supplied coaxially through an opening (55) of the air aperture plate. A flame tube (21) surrounds the gasifier (17) and an electric heater (39) leaving an annular space (40). When the burner is started up, the electric heater (39) is switched on until the gasifier has the necessary operating temperature. Fuel is then supplied. The fuel/air mixture is ignited by an electrode (65). The flame tube (21) extends to the end of the mixing head (29), or only a little therebeyond. A flame is formed at the outlets (33) that touches the flame tube after a short travel, then emerges from it and expands. Because the flame can immediately expand, only little NO.sub.x is formed.

Abstract: There is disclosed an oxygen heater, which uses a portion of supplied oxygen as auxiliary combustion oxygen, a hot oxygen lance and a pulverized solid fuel burner, both having oxygen heaters. The oxygen heater has a combustion chamber for burning fuel with a portion of the supplied oxygen. An oxygen-jetting opening is disposed around the combustion chamber. The oxygen jetted out of the opening forms a gas curtain between an internal wall of a mixing chamber and a flame produced in the combustion chamber, and is heated by the flame. Both the oxygen lance and the burner includes the above-mentioned oxygen heater.

Abstract: A toxic gas exhaust suppression-type combustion system burns a hydrocarbon-based fuel and comprises, an incomplete combustion section for causing incomplete combustion by supplying the fuel and a small amount of air, a solid component removing section, connected to said incomplete combustion section, for collecting and removing a solid component, such as soot, within an unburned gas generated by said incomplete combustion section, and a complete combustion section for perfectly burning a remaining unburned gas by supplying a sufficient amount of air, the remaining unburned gas being obtained by removing the solid component from the unburned gas generated by said incomplete combustion section by flowing the unburned gas through said solid component removing section.

Abstract: Gas burner, particularly for household appliances, comprising a burner body (1) having a peripheral side wall (5) defining an enclosure with an outward opening and at least one air-gas mixture supply orifice (13), which enclosure is adapted to contain a "soft" flame able to withstand sudden pressure variations of the primary air brought to the burner and to re-activate the flames of the burner should they be blown out, characterized in that it further comprises at least one chamber (15) situated behind the supply orifice (13) of said enclosure (11) and itself having a gas mixture supply orifice (16) with a cross section substantially equal to or greater than that of the supply orifice (13) of the enclosure, this chamber being configured so that the air-gas mixture which is contained therein forms a buffer cancelling out or attenuating the sudden pressure variations of the primary air admitted into the burner and so that the flame of the enclosure is maintained.

Abstract: A single ended radiant tube for furnace heating has four concentric tubes (10, 12, 14, 16). Fuel gas is fed through tube (16) and combustion air through the space between tubes (12, 14). Flame and combustion products flow first in the same direction as the gas and air and then reverse at the end of tube (12) to flow in the opposite direction between that and tube (10). The combustion air is caused to flow in a helical pattern by the provision of helix (36) so as to provide an extended flow path for better heat transfer.

Abstract: Provided is an atomizer-equipped combustion apparatus including an atomizing device for atomizing a fuel, a spray chamber for mixing the fuel atomized by the atomizing device with air to form a mixture, and for moving the mixture downwardly toward an opening at a distal end portion of the spray chamber, and a wind box provided so as to surround a lower portion of the spray chamber for forming a combustion space between itself and the spray chamber, the wind box being provided with a plurality of air supply holes facing a lower portion of the spray chamber. A mixture of external air and a fine spray of fuel produced by the atomizer can be ignited instantaneously by means of a comparatively simple structure, odors produced at igition and extinguishment can be greatly suppressed and a high turn-down ratio can be obtained.

Abstract: In a premixing burner, which consists of two hollow partial conical bodies (1, 2), which are positioned on one another and have a cone inclination increasing in the direction of flow, the fuel feed takes place via central fuel nozzle (3) and/or via a plurality of fuel nozzles (17), which are placed along the inflow of the combustion air (15) into the interior (14) of the burner. The combustion air (15) itself is a mixture of fresh air and exhaust gas. The fresh air is led up via a first flow funnel (23a, 23b ) and exhaust gas recirculation takes place via a second flow funnel (22a, 22b). These two gases mix with one another before flowing tangentially into the interior (14). An optimum, homogenous fuel concentration over the cross-section arises in the region of the return flow zone (6).

Abstract: A method for reducing the flame temperature of an oxy-fuel burner, such a burner comprising a central oxygen nozzle at least one fuel nozzle radially spaced from the central oxygen nozzle, and at least one peripheral oxygen nozzle at greater radial distance from the central oxygen nozzle than the fuel nozzle, all nozzles being at least substantially parallel, a casing surrounding the nozzles and whose forward end lies in a plane at right angles to the longitudinal axis of the burner, and whose rear portion defines an oxygen chamber, and means for the supply of oxygen-containing gas and fuel, respectively, to the nozzles. The peripheral oxygen nozzle is in the form of a Laval nozzle or, if it is an annular nozzle, is of the same cross-sectional variation as the Laval nozzle throughout its entire length.

Abstract: A vaporization burner for a heater operated with liquid fuel, in particular an auxiliary vehicle heater with a support that projects into a combustion chamber and on whose front side facing the combustion chamber an absorbent body is located that is supplied with fuel by a fuel feed pipe and on whose back side there is connected an ignition chamber that contains an igniter, for which a passage to the combustion chamber is provided in the support. To achieve improved combustion performance, especially in the start-up phase, with even fuel and heat distribution over the absorbent body, according to a preferred embodiment, a perforated disk is placed between the support and the absorbent body that has a through-hole in the area of a passage in the support and also has a slot-shaped notch which runs from the through-hole up the the edge of perforated disk.

Abstract: Burner assembly for location within an air supply housing for heater the burner assembly having opposite side walls, upper and lower tiered baffles, each having connected thereon an air balancing baffle, the air balancing baffles and tiered baffles forming a combustion chamber therebetween, a gas manifold arranged approximately at the intake end of the burner assembly, with an associated shroud for directing air around the gas manifold, and for selectively diverting and directing air through the air balancing baffles, and into the combustion chamber. A diverter is arranged for directing incoming air, and deflectors are provided at the upper and lower front of the shrouds to direct the passage of air into the path of the combustion gases. Slots are provided within the brackets holding the front of the shrouds to reduced heat generation, and the arrangement of various slots provided within the tiered baffles provided fo reducing hot spots.

Abstract: Serving drying and gas cleaning processes, and thus also the intermediate heating of gas or flue gas, is a line burner where the fuel gas is fed through a fuel gas pipe and a fuel gas feed to fuel gas manifolds that extends lengthwise in a burner housing and in which fuel gas ports are provided. The necessary primary combustion air flow proceeds through an air manifold, after passing a diffuser plate and an orifice plate into a mixing zone adjacent to the fuel gas ports. Parallel with it, combustion air is fed past the fuel gas manifolds through additional combustion air channels, generating secondary flows of combustion air. Upon flowing around the fuel gas manifolds, these secondary flows are fed to the flame, effecting a dual-stage combustion. Extension plates support angle irons hich lie in spaced relation to the fuel gas manifolds to form a pair of combustion air channels for conducting a portion of the combustion air around the fuel gas manifolds to a downstream location.

Abstract: A fire vortex display for providing an interesting fire display for decorative and attention getting purposes. The display utilizes a burner for burning a gaseous or liquid fuel, typically in a very fuel rich mixture. The burner is located at one end of a normally vertical transparent tube such as a Pyrex tube, with a blower blowing air into the tube adjacent to the burner in a substantially circumferential manner to provide a swirling action for the flame given off by the burner as the flame proceeds upward into the tube. A second transparent tube concentric with and somewhat larger than the first tube is provided over the first tube, with the region between the two tubes being ducted to form the inlet for the blower. This keeps the outer tube cool so that the fire vortex can be observed from a position close thereto and the outer tube even touched by an observer without danger thereto.

Abstract: A stationary gasifier (17) is located at a distance (49) from an air aperture plate (35). At the outlet (42) of the gasifier there is a stationary mixing head (29) having a deflector section (31) and lateral outlets (33). Fuel is supplied coaxially through an opening (55) of the air aperture plate. A flame tube (21) surrounds the gasifier (17) and an electric heater (39) leaving an annular space (40). When the burner is started up, the electric heater (39) is switched on until the gasifier has the necessary operating temperature. Fuel is then supplied. The fuel/air mixture is ignited by an electrode (65). The flame tube (21) extends to the end of the mixing head (29), or only a little therebeyond. A flame is formed at the outlets (33) that touches the flame tube after a short travel, then emerges from it and expands. Because the flame can immediately expand, only little NO.sub.x is formed.

Abstract: In a burner assembly for location within an air supply housing for a heater and disposed for inducing the movement of air through a blower and into and around a burner assembly during heater operation to create a supply of heated air for a space to be warmed, the burner assembly being of the type having opposite side walls, and upper and lower tiered baffles, each having connected thereon an air balancing baffle, forming cavities therebetween, with the combination of the air balancing baffles and tiered burner baffles forming a combustion chamber therebetween for reception and combustion of gas delivered from a gas manifold arranged approximately at the intake end of the burner assembly, with a shroud arranged above and below the upper and lower tier baffles for directing air into an intake at the back of the gas manifold, and for selectively diverting and directing air through the air balancing baffles, and through the burner baffles, into the combustion chamber.

Abstract: A gas burner for a water heater and comprising a base having central passage. Gas fuel is supplied to one end of the passage and an orifice is removably connected to the other end of the passage. An inverted cup-shaped head has an inner end threaded to the base and defines a closed chamber disposed in communication with the orifice. A plurality of ports are formed in the head and provide communication between the chamber and the exterior of the burner. The ports have a greater axial length than diameter and aid in controlling the flame configuration.

Abstract: A gas burner having flame openings adapted for discharging a mixture of gaseous fuel and primary combustion air supplied from an electric fan, and secondary air supply passages adapted for supplying secondary combustion air from the electric fan into a combustion space adjacent the flame openings. The gas burner is characterized by opposed combustion face forming wall members extending from the sides of the flame openings, in the mixed gas discharge direction and at the same time diverging outwardly with the secondary combustion air outlet openings formed continuously or intermittently along lines extended from both ends of the flame openings on the faces of the wall members towards the direction of mixed gas flow.

Abstract: In this combustion process a fluid fuel such as pulverized coal mixed with primary air is injected along an axis and secondary air is injected along a helical path around the axis. Tertiary air is injected around the combustible fluid and the secondary air in substantially the same direction as the combustible fluid, in a substantially circumferentially continuous coaxial ring which is laterally confined downstream of the injection point.

Abstract: A gas burner comprising a heating gas pipe, the wall of which is traversed by at least one group of longitudinally arranged outlet nozzles. These groups of nozzles (2 or 3) are connected with at least one conduit (5) for a heat accumulating agent which is parallel to the heating gas pipe (1).

Abstract: A burner for heating a high-velocity stream of a combustion supporting gas comprises a pipe fed with a fuel gas and extending across the flow direction of the combustion supporting gas stream. The pipe defines holes generating fuel gas jets directed in the direction of the combustion supporting gas stream flow, and a flame stabilizer is arranged downstream of the pipe in this direction, the flame stabilizer including two divergent combustion supporting gas stream deflector wings delimiting a downstream zone shielded from said gas stream and an upstream zone.

Abstract: The improvement of the present invention is directed to an endplate which is disposed at the end of a gaseous fuel burner body forming the flame-containing space. Such endplate has a portion which extends substantially above the top edge of the mixing plates. The endplate may have lateral sides which extend beyond the lateral extent of the endplate body to shield and protect the apertures disposed within the longitudinal extent of the mixing plates also to shield the flame on the lateral sides of the mixing plates disposed near the endplate. The endplate improvement of the present invention serves to substantially reduce secondary air from chilling the flame near the end of the burner, and thereby substantially reducing the formation of carbon monoxide, which is formed preferentially to carbon dioxide in reduced temperature flames.

Abstract: A compact, high efficiency condensing furnace includes a combustion chamber and a pair of radiators. The temperature of the combustion gases is reduced in one of the radiators to the point at which combustion products condense, thereby extracting the latent heat of vaporization from these combustion products. Each of the radiators has an inlet and an outlet and a baffle between the inlet and outlet to prevent combustion gases from passing directly from the inlet to the outlet. Additional turbulence-providing baffles can be provided within the radiators if desired. A combustion air inlet pipe extends through a recess in the bottom of each radiator to the combustion chamber, and a gas burner tube extends generally concentrically within the combustion air inlet pipe to provide a gas flame within the combustion chamber. A flame spreader plate directs the flame toward the bottom of the combustion chamber.

Abstract: An air control assembly for a fuel burner having a combustion chamber and a nozzle includes a control device which controls the amount of air that flows into the burner and an assembly dependent on fuel pressure which actuates the control device. A fuel inlet path is provided for communicating fuel to the nozzle and a fuel return path is provided for communicating excess fuel away from the nozzle. The assembly dependent on fuel pressure includes a piston and rod device adapted for reciprocation in a piston chamber. A nozzle block is provided in which the piston chamber is defined and the nozzle is supported.

Abstract: A compact forced air heater comprises a combustion chamber mounted in a housing, a burner module mounted across a back open end of the combustion chamber adjacent a back wall of the housing for producing heated air in the combustion chamber, an air intake in a front wall of the housing, and a high speed (3000 rpm) forced air blower mounted between the combustion chamber and the housing front end wall. The burner module includes a flameholder plate having a central primary air hole and circular rows of staggered secondary air holes surrounding the primary air hole. A flamespreader plate is mounted on the flameholder plate opposite the primary air hole, and an elongated right-angle burner tube, having a flattened locating-and-orienting end and at least one burner orifice in a sidewall of the tube, is located on an opposite side of the flameholder plate with the burner orifice aligned with the primary air hole and the flamespreader plate. An ignitor and a thermocouple are also mounted on the flameholder plate.

Abstract: An engine heater for automotive vehicles which adapts a common propane torch to accomplish the heating. The prime features of the invention are its simplicity, compactness, economy, ease of being carried in the vehicle, and its not needing any installation in or modification to the vehicle in order to be used. Heat is safely applied over a relatively large area of the bottom of a vehicle's engine oil pan and then the heated oil pan and oil will cause the critical interior portions of the engine to be warmed; thus, greatly enhancing the engine's ability to start and run in very cold weather. The device also includes means of preventing strong wind from either blowing out the flame or carrying most of the heated air/exhaust gas discharge away from the bottom of the engine.

Abstract: This invention relates to a burner with low emission of polluting gases, comprising, in a conduit, an injector of fluid fuel which creates in the conduit, supplied with combustion-supporting air heated in an exchanger, a fuel/air mixture. The latter burns, creating a flame which clings to a stabilizer constituted for example by a hollow piece, of V-section, obturating a central part of the cross-section of the conduit. Downstream of this stabilizer there is placed an obstacle causing a local reduction follwed by a sudden increase in the cross-section of the conduit in order to promote oxidation of the carbon monoxide.