Abstract: The invention pertains to a burner for solid fuel, said burner comprising: A stoker (41) having a fuel outlet (29) within said burner, and an exhaust (31), a grate (27) positioned below said fuel outlet (29) and between said fuel outlet (29) and said exhaust (31), a first blower (92) connected to a space below said grate (27), and a second blower (68) connected to a plurality of injectors (61A, 62A) provided around said fuel outlet (29) above said grate (27) and directed towards said exhaust (31), said injectors (61A, 62A) being parallel and unidirectionally directed over said grate (27), and wherein the injectors (61A, 62A) are provided along the periphery of said burner, said injectors (61A, 62A) being configured for injecting secondary air at a speed of 40-80 m/s, thereby ensuring unidirectional parallel flows of secondary air over said grate (27).

Abstract: A system for retaining a fuel nozzle premix tube includes a retention plate and a premix tube which extends downstream from an outlet of a premix passage defined along an aft side of a fuel plenum body. The premix tube includes an inlet end and a spring support feature which is disposed proximate to the inlet end. The premix tube extends through the retention plate. The spring retention feature is disposed between an aft side of the fuel plenum and the retention plate. The system further includes a spring which extends between the spring retention feature and the retention plate.

Abstract: A burner for an exhaust aftertreatment system may include a housing assembly and an ignition device. The housing assembly may include an inner shell surrounded by intermediate and outer shells. The inner shell may at least partially define a combustion chamber. The housing assembly may include an airflow passage having an opening extending through the outer shell. The airflow passage may extend between the outer shell and the intermediate shell as well as between the intermediate shell and the inner shell. The airflow passage may provide fluid communication between the opening and the combustion chamber. The ignition device may be at least partially disposed within the housing assembly and may ignite fuel received from a fuel source and air received from the airflow passage to produce a flame in the combustion chamber. The airflow passage may be in a heat transfer relationship with the flame in the combustion chamber.

Abstract: A fuel processor for producing a hydrogen-containing product stream from a fuel stream and an oxidant stream, comprises a mixing tube from which the combined fuel and oxidant stream is directed substantially axially into a reaction chamber. The reaction chamber comprises a turn-around chamber and a turn-around wall at one end for re-directing the combined reactant stream, so that in the turn-around chamber the re-directed stream surrounds and is in contact with the combined reactant stream flowing substantially axially in the opposite direction. This design and opposing flow configuration creates a low velocity zone which stabilizes the location of a flame in the fuel processor and offers other advantages.

Abstract: A trapped vortex combustor includes a trapped vortex cavity having a first surface and a second surface. A plurality of fluidic mixers are disposed circumferentially along the first surface and the second surface of the trapped vortex cavity. At least one fluidic mixer includes a first open end receiving a first fluid stream, a coanda profile in the proximity of the first open end, a fuel plenum to discharge a fuel stream over the coanda profile, and a second open end for receiving the mixture of the first fluid stream and the fuel stream and discharging the mixture of the first fluid stream and the fuel stream in the trapped vortex cavity. The coanda profile is configured to enable attachment of the fuel stream to the coanda profile to form a boundary layer of the fuel stream and, to entrain the incoming first fluid stream to the boundary layer of the fuel stream to form a mixture of the first fluid stream and the fuel stream.

Abstract: The present invention relates to a heating device for exhaust gas in an internal-combustion engine, which is driven by using LPG, LNG, a volatile oil, a light oil, biodiesel or oxygenated hydrocarbon being DME, the device consisting of a catalyst reactor reformer, an exhaust gas suction section and the second fuel supply device. The exhaust gas suction section is mounted for using oxygen included in the exhaust gas. When the heating device is driven, air and fuels are supplied to the catalyst reactor and the second fuel supply device via a single tube when the heating device is heated. The present invention provides with a heating device for exhaust gas capable of securing the durability of a heating device for exhaust gas and minimizing the amount of air supplied from the outside to the combustion reforming device by excluding carbon depositions in a tube due to a prolysis of LPG, LNG, a volatile oil, a light oil, biodiesel or oxygenated hydrocarbon being DME, and a method for driving the device.

Abstract: A gas-heated laundry dryer having a heating device. The heating device includes a gas burner, a valve with a gas nozzle configured to supply primary air for formation of a flame and a tubular heating channel configured to enclose the flame. The tubular heating channel includes an inlet opening configured to receive secondary air as combustion air and an outlet opening configured to receive tertiary air mixable with hot gases of the burner. The outlet opening is connected to a process air duct of the laundry dryer. An annular baffle member is disposed in the outlet opening of the heating channel and configured to center, by the secondary and tertiary air, at least one of the flame and a hot air stream in the channel.

Abstract: The invention relates to an arrangement for preparation of a fuel for combustion including a burner, a combustion chamber associated with the burner and in which combustion of a fuel is to take place in use of the arrangement as well as means for supplying liquid fuel to the arrangement through an internal passage in the burner for said combustion, solid portions of the burner body being heated by said combustion in use of the arrangement, wherein said internal passage is located inside said solid portions of the burner body for receiving heat energy evaporating said fuel from these body portions, and that it comprises means for conveying vaporized fuel to the combustion chamber to take part in the combustion.

Abstract: A heat accumulating-type burner that operates by alternately repeating heat accumulation and combustion where the heat accumulating element is heated by exhaust gas to accumulate heat therein, and combustion air is passed through the heat accumulating portion to preheat the combustion air by thermal exchange with the heat accumulating element that holds the heat accumulated therein, and the preheated combustion air is used to carry out combustion. The cross-sectional area of the heat accumulating portion at the furnace-inner side is made to be smaller than the cross-sectional area of the heat accumulating portion at the air supply/discharge port side, and in addition, the thickness of the fireproof heat insulating member that covers the heat accumulating portion is made to be thick at the furnace-inner side of the heat accumulating portion, and is made to be thin at the air supply/discharge port side of the heat accumulating portion.

Abstract: A reformer burner that includes a fuel supply tube through which a fuel is supplied and a fuel supply chamber that surrounds the fuel supply tube and has a plurality of atomizing holes to atomize a fuel into a combustion chamber of a reformer.

Abstract: A portable heat transfer apparatus comprises a mixture forming/supply device for producing a mixture of fuel gas and air, a heating unit including a heat collection casing, and a burner installed in the casing and formed with a combustion chamber having a flat surface. The burner includes a large number of holes formed on an upstream side thereof to extend up to the flat surface to allow the mixture injected into the chamber therethrough to combust in the chamber, and a porous solid radiant-heat conversion component to partly convert heat energy of exhaust gas from the combustion in the chamber into radiant heat energy. The conversion component defines at least a surface region of the chamber located opposite to a flame front produced close to the flat surface. The apparatus includes a heat-driven pump joined to the casing and receiving heat generated by the combustion, through the heat collection casing.

Abstract: A highly efficient radiant burner assembly (100) for use in a patio heater or the like in areas where people prefer or require low NOX emissions. The efficiencies are created through the use of a spherical burner element (116) that is either formed of a high temperature steel wire mesh or stamping containing apertures of a predetermined size to allow combustion to remain within the burner element and to not cause the temperature of the burner element to exceed the temperature at which NOX are developed. Coating the burner with a catalyst also aids the low emission combustion process. Additional efficiencies are provided by atomizing the fuel before it is mixed with air and by the use of a laminar flow heat exchanger (940) that utilizes a fluid media flowing in a helical coil condenser unit.

Abstract: An innovative cooling tube assembly is disclosed for use in cooling the liner of a combustor in a gas turbine engine. Each cooling tube has a serpentine shape that conforms to the contour of the liner as the tube extends from one end of the combustor to the other to conduct cooling air in a counterflow direction to the exhaust gases. The cooling air gains heat, thereby cooling the liner wall, and is delivered in the proximity of the burners where its heat aids in combustion. An assembly of cooling tubes is provided for mounting on either the cool side or the hot side of the combustor liner, the assembly comprising a plurality of nested cooling tubes. The cooling tubes may be fabricated of a metallic material and either brazed to the liner or supported by pins inserted through the liner.

Abstract: A generally toroidal counterflow heat exchanger is the main element of a combustor that operates at a micro scale. The combustor includes a central combustion region with openings to a reactant gas channel and an exhaust gas channel. The reactant channel and exhaust channels are coiled around each other in a spiral configuration that reduces heat loss. An electric current microgenerator is similar and also includes a thermoelectric active wall composed of n-type and p-type thermoelectric elements as part of a channel wall of the microcombustor. The thermoelectric active wall includes fins configured to increase the temperature differential across the thermoelectric elements relative to the temperature difference between the thermoelectric elements and the reactant and exhaust gases. A method of monolithically fabricating such microdevices by electrodepositing multiple layers of material is also provided.

Abstract: A method for providing fuel injection in combustion equipment by increasing the velocity of fuel flow delivered to an appliance incorporating a combustion zone and a burner therein, such as to increase ignition speed and flame speed during the combustion process and to reduce the appliance's harmful stack emissions, by employing a device which increases fuel volume while at the same time reducing fuel density through extracting heat from the appliance's combustion zone in order to pre-heat fuel for delivery to the appliance's burner at a constant, pre-set operating temperature of between 100 degrees Fahrenheit and the fuel's flash point temperature.

Abstract: The invention relates to an LPG combusting burner device for flaming and flame cultivation purposes and an improved hand-held torch that may incorporate such burner device. The burner device includes a primary burner (14) having at least one fuel delivery nozzle or jet (80) arranged within an open combustion chamber (71) defined within a burner skirt (70) such as to direct a stream of fuel towards a flame delivery opening of the skirt (70), and a vaporiser (18) located in heat exchanging proximity to the primary burner (14) and having a pressurization chamber with an inlet for liquid LPG fuel and an outlet for gaseous LPG fuel, the inlet being arranged to be in fluid communication with a source of pressurized LPG and the other being in communication with the nozzle of the primary burner.

Abstract: A burner apparatus for reducing carbon production, comprises a burner having a combustion chamber and a heat exchanger located within the combustion chamber. The heat exchanger has an inlet end where a mixture comprising air and fuel enters, a heat transfer section, and an outlet end from which a process mixture of air and fuel discharges into the combustion chamber and is ignited to produce a product mixture. The inlet end and outlet end are located such that the general flow direction of the air and fuel within at least a portion of the heat transfer section is substantially parallel with flow direction of the product mixture in the combustion chamber. The heat transfer section is located within the combustion chamber so as to receive thermal input from the combusted product mixture therein to heat the process mixture to a temperature sufficiently high to substantially reduce the production of solid carbon therein. The invention is also for a method for reducing carbon production.

Abstract: An improved gas pistol with reverse flow heating device including a base, a support device, a piezo electric device, an air control device, a reverse flow heating device, an ejection device and an outer tube. In use, an insert ring is coupled to a gas container so that a conical pin in a neck ring urges against a gas valve of the gas container to release the gas, which flows via an inverted-L shaped hole at one side of the conical pin into a neck channel into a sleeve. By turning a control rod to adjust the flow of gas and to cause it to pass through an insert mount, a heating tube and a nut hole into a securing nut, the gas is vaporized and then passed through a relay tube to be ejected through a gas nozzle. At the instant when the gas is ejected, an air adjustment knob may be turned to adjust the amount of induced air to help combustion. Gas and air are mixed in a mixing tube, and the mixture is pushed to a flame nozzle and ejected through a jet hole and a plurality of primary flame holes.

Abstract: The invention relates to a process and a device for burning oxidizable components in a vehicle gas to be purified, comprising a gas inlet (36), a burner (19) with an attached flame pipe (22) opening into a main combustion chamber (24) comprising a bottom and side walls, an annular chamber leading from the side of the main combustion chamber bottom (21), a heat exchanger (32) around which flows the purified gas and through which flows the gas to be purified, and a gas outlet (38). To obtain good combustion with a compact construction, especially to make the best possible use of the geometric dwell time in the main combustion chamber, it is proposed that the main combustion chamber be constructed in such a way and/or has such guide components (40,42,44) that the gas flowing from the bottom towards the annular chamber is distributed completely or largely uniformly over the cross-section of the main combustion chamber.

Abstract: Raw gas burner that maximizes fuel efficiency of the burner, minimizes residence time, and reduces or eliminates flame contact with the process air or gas in order to minimize NOx formation. Process air flow such as from the cold side of a heat exchanger associated with thermal oxidizer apparatus is directed into and around the burner. The amount of process air flowing into the burner is regulated based upon the pressure drop created by the burner assembly. The pressure drop is, in turn, regulated by one or more of an external damper assembly, an internal damper assembly, and movement of the burner relative to the apparatus in which it is mounted. To ensure thorough mixing of the fuel and process air, process air entering the burner is caused to spin by the use of a swirl generator. The fuel/process air mixture proceeds into the combustion section of the burner, where the swirling flow is caused to recirculate to ensure complete combustion of the fuel in the combustion chamber.

Abstract: Injectors are disclosed for use in an underoxidized burner having a single or double stage internal combustion chamber for receiving gaseous or liquid fuel such as diesel for mixture with air or oxygen and subsequent ignition by a spark plug. The injector includes feed conduits or tubes for simultaneously conducting air and fuel to a mixing device having a baffle arrangement against which separately injected air and fuel impinge causing a complete air/fuel blending which is ignited, burned and exhausted. The injector may accept effluent gases for mixing with water to produce maximum hydrogen H.sub.2 from fuels. A lamina flow is produced which is folded over and reversed in direction within the combustion chamber.

Abstract: Apparatus is disclosed herein for reducing engine nitrogen oxide emissions by mixing hydrogen prepared from a portion or all of engine fuel within a simple burner. The apparatus includes an insulated burner having an internal combustion chamber for receiving either a portion of or all the gaseous fuel or liquid fuel for mixture with air and subsequent ignition by a spark plug. The chamber is within a feed preheater assembly. A mixing chamber is included having a series of baffles against which injected air and fuel vapor impinge causing thorough and complete air/fuel blending into a mixture subsequently ignited and burned, and then discharged into the combustion chamber of the engine itself. The pre-heating assembly raises the temperature of the incoming air/fuel mixture via a heat exchanging process with post combusted gases from the combustion chamber.

Abstract: An infrared heater, especially for construction purposes or for animal brooders in which the air duct passes through the reflector on the side of a glow body turned away from the surface to be irradiated so that the air duct is heated by the glow body. Within the heated region of the air duct, a filter is provided which is heated to red heat, thereby pyralizing or burning off deposits and maintaining the filter free from obstruction for long periods.

Abstract: The gas generator comprises an annular main porous piece, at least one calibration lining for defining a flow rate of a first liquid propellant component that is injected through the porous piece towards a combustion chamber that is delimited by one of the faces of the porous piece, and means for radially injecting a flow of a second propellant component into the immediate proximity of the face of the porous piece that delimits the combustion chamber in such a manner as to cause the first and second propellant components to be mixed in the immediate proximity of the face of the porous piece that delimits the combustion chamber.

Abstract: The incinerator has a closed housing (10) with high temperature insulation (17). A linear gas burner (50) is wholly within the bottom portion of the incineration chamber (22), producing a line of small flames (59). Polluted air, passing downwardly through vertically suspended heat exchanger tubes (47) wholly within the combustion chamber, is preheated and then discharged downwardly against the flames 59 of the linear burner (50), producing products of combustion and air heated to about 1400.degree. F. The products of combustion and air pass upwardly and on opposite outer sides of the tubes (47) and exit the incinerator. The heated air and products of combustion heat the insulation sufficiently that it emits radiant energy inwardly for heating the tubes 47 by radiation, as the products of combustion and air heat the tubes 47 by convective heat transfer.

Abstract: The invention relates to a radiation heater for air/gas admixtures which includes a double-wall housing of a generally trapezoidal transverse cross-section defined by a top wall and downwardly convering side walls. The housing includes a burner plate between a mixing chamber and a radiation grid, and the mixing chamber is fed the air/fuel admixture from an injector nozzle, a mixing tube, a preheated intermediate chamber, and a transition zone or chamber. The injector nozzle and the mixing tube are located at the lower edge of the housing side wall(s) to thereby provide an intermediate chamber extending essentially the length of the side wall(s) along the exterior of which the hot waste gases flow or brush to preheat the fresh admixture of air and fuel in the intermediate chamber thereby effecting reliable operation at low gas pressures and low manufacturing and repair costs.

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: A combustion heating device for use for example with oil processing equipment defines a combustion chamber within which combustion wholly takes place. The combustion chamber consists solely of a sleeve and end plate defining a vertical cylinder and a layer of ceramic fiber insulating material inside the sleeve defining the inner surface of the combustion chamber. A burner is mounted in a bottom plate of the device which can be pivoted to an open position exposing the burner for service. Air channels are defined on the outside of the sleeve so that incoming combustion air passes over the sleeve and acts as a heat recovery for any heat escaping from the insulating material. An outlet duct at an upper end of the combustion chamber at right angles to the combustion chamber extracts the combustion gases so that all heat exchange takes place outside of the combustion chamber. The device improves heating efficiency and reduces corrosion of heat transfer surfaces.

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: Production of oxides of nitrogen during combustion of liquid fuel can be reduced by burning at relatively low temperatures of about 1400.degree. C., by first producing a special combustible gaseous mixture of superheated steam, fuel vapor, and combustion air. Water is fed (9) to the apparatus in quantities of about 2 to 4 parts for each part of fuel (10). Then the fuel is vaporized (8) in a stream of the superheated steam. This avoids fuel cracking and formation of long-chain hydrocarbons. Preheated air (13,14,15) is added (17) in slightly over stoichiometric proportions. The resulting mixture is burned (2) and the hot effluent is used to heat the evaporator (6,7,8) and the air preheating chamber (15), with a bypass (20) equipped with a throttle (22) being used for regulation of evaporator temperature. For start-up, an external hot air source (23) or electric heat (24) can be used. The remaining heat in the effluent can be captured in a conventional heat exchanger.

Abstract: There is disclosed an oxygen heater, which uses a part of supplied oxygen as auxiliary combustion oxygen, a hot oxygen lance and a pulverized solid fuel burner, both having oxygen heaters. The oxygen heater (1) has a combustion chamber (4) for both mixing and burning fuel with the part of the supplied oxygen. An oxygen-jetting opening (8) is disposed around the combustion chamber. The oxygen jetted out of the opening forms a gas curtain between an internal wall (2) and a flame (10) 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: An appliance for the combustion of oxidizable substances in a carrier gas is described, in which the carrier gas is fed through heat exchanger tubes having inlet ends which are bent outwardly adjacent an outlet for gas from which oxidizable substances have been removed by combustion. Prior to entering the tubes the carrier gas passes an annular chamber in which it becomes pre-heated and condensates are evaporated.

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.

Abstract: The invention relates to a method and apparatus for temperature control of a gas-heated evaporator according to DIN standard 30 696, which for attaining, keeping constant, and limiting a predetermined operating temperature is equipped with heating and control elements.

Abstract: A liquid fuel combustion apparatus including a housing defining a composite chamber; a perforate wall separating the composite chamber into a vaporization chamber and a combustion chamber and distributing the flow of vapor therebetween; an intake pipe providing air flow to the vaporization and combustion chambers; and a vaporization pipe comprising an inlet portion disposed in the combustion chamber and a discharge portion projecting into the vaporization chamber, the discharge portion defining a jet for discharging fuel into the vaporization chamber. Also included is a means for feeding liquid fuel into an end of the vaporization pipe opposite to the discharge portion, and an igniter for igniting fuel in the combustion chamber.

Abstract: A combustion device for combustion of a gaseous fuel with air is provided with means for supplying gas automatically at a mass flow rate corresponding to a mass flow of air governed by the demand of heat. The gas is supplied at a pressure slightly above atmospheric pressure to an ejector using preheated primary air as a carrying medium. The ejector is mounted in a flow path in series with and after a blower, a recuperative preheater and a swirl device but prior to a system of heater tubes and the exhaust passages of the preheater.

Abstract: A burner for cleaning accumulated soot from a soot filter associated with the exhaust of internal combustion engines, the burner is simple from a constructional viewpoint and especially effective with respect to initiation and maintenance of a soot-burning process in the soot filter. The burner includes a fuel nozzle, air nozzle, and glow plug arranged in a predetermined succession in the flow direction of the air introduced into the burner chamber. An especially intensive intermingling of the fuel-air mixture for the burner and/or for the soot filter is obtained by producing a turbulent flow by means of the air nozzle.

Abstract: The concentration of nitrogen oxides contained in exhaust combustion gases is decreased by feeding into the combustion system within a heating furnace the combination of an ammonium compound and a phenol compound, the combination of Fluid Catalytic Cracking gasoline tank bottom water or water obtained after washing Fluid Catalytic Cracking gasoline and an ammonium compound, or FCC overhead condensate.

Abstract: A method of burning a fuel gas in a low NO.sub.x level in the exhaust gas is disclosed, wherein a radiant tube burner having concentrically arranged outer air flow nozzle, fuel gas nozzles arranged in a circle and inner air flow nozzle and having a particular structure is used and the fuel gas is burnt under a particularly limited condition.

Abstract: A burner having a pulsating mode of operation has a combustion chamber for the periodic burning of successive separate charges of combustible fuel continuously supplied from an inlet system. Upstream of the combustion chamber is an ignition chamber having roughened internal walls, an ignition source and an inlet system for fuel and oxygen. During use of the burner, periodic ignition of successive separate charges of combustible gas in the ignition chamber produces fast moving combustion or detonation waves capable of igniting the successive separate charges of combustible fuel in the combustion chamber.

Abstract: A gas turbine engine in which the air compressed by a compressor provided therein is injected into a combustion chamber provided therein through an air injection valve after passing through a first air passageway formed integrally with the main housing and a second air passageway formed integrally with the combustion chamber housing. One end of the first air passageway is formed into a funnel shape, so that the air compressed by the compressor can efficiently enter the first air passageway. Since the air flowing through the air passageway according to the present invention is heated while passing along the combustion chamber, it is possible to enhance the combustion efficiency.

Abstract: A pressure atomizing liquid fuel burner having an improved turndown ratio is disclosed along with a method of increasing the turndown ratio in such burners. The burner includes means for adding an amount of gas to the liquid fuel prior to the injection of the fuel which causes the liquid fuel to foam such that a liquid-gas foamed mixture is injected. The relative amounts of the aeration gas and the liquid fuel are controlled such that the injection velocity is maintained relatively constant over a wide turndown ratio in the liquid fuel. The aeration gas to be added to the liquid fuel may be preheated prior to the addition of the gas to the liquid fuel.

Abstract: A combustor in which fuel is premixed with rather large amounts of primary air in order to obtain a high temperature, rich mixture of volatized fuel and air prior to ignition is designed as a tubular vaporizer provided with a swirl inlet opening in a preheat air chamber and a substantially rotation symmetrical outlet in a combustion chamber the outlet being directed towards inlets for secondary air to the combustion chamber.

Abstract: Oil heater for burning of waste oil or other like petroleum liquids through vaporization of the fuel resulting in total fuel burn and maximum BTU. Combustion air enters the center of a combustion chamber enclosure through a combustion air wand resulting in air flow in all directions. The wand includes a plurality of spaced holes in a closed annular air channel allowing for escape of air to the combustion chamber and a diffuser plate circumferentially affixed to the wand including a plurality of spaced holes in the diffuser plate for spreading and mixing resultant vapors and gases for burning at the level of the wand. A submerged pump in a fuel storage tank provides for even fuel flow to a center point above the air wand in addition to even air flow by a blower. A vaporizer pan in the bottom of the chamber provides for boiling of the fuel with its resulting vaporization and total burn of residue and ash.

Abstract: A method and an apparatus for dosing the air-fuel mixture in burners of the type which is formed with an evaporator tube (9) through which fuel and some amount of combustion air is introduced in the combustion chamber (1) and in said combustion chamber is mixed with further combustion air and is inflamed. The optimum amount of combustion air is determined for different amounts of fuel and for different reference temperatures in a predetermined point of the evaporator tube (9) adjacent the mouth (10) thereof in the combustion chamber (1), and the temperature of the air-fuel mixture is measured by means of a thermo element (41) in the said point of the evaporator tube (9).

Abstract: A combustion device for use with pressurized and zero pressure hot air balloons or other hot air appliances, which comprises in general, a coanda-type inlet nozzle, a diffuser, a flame-arrestor screen, and a fuel preheater means for supplying required fuel vapor at a desired pressure to the inlet nozzle. The combustion device may be used with any suitable fuel, but it is primarily applicable to propane. The combustion device is a fuel pressure driven-nozzle-mixer-diffuser-arrestor screen burner combustion device which generates a stream of heated air for the transfer of thermal energy to a load.

Abstract: Large amounts of low boiling liquefied gases are evaporated by heat transfer in a cylindrical combustion chamber without a convection component and a passage for the gas to be evaporated surrounds the combustion chamber so that the liquefied gas is exposed to a burner flame upon entry into the passage.

Abstract: In an oil fired boiler (with a combustion chamber and a burner which blows a flame into it) there is a J-shaped heat-exchange duct, built on the combustion chamber floor out of thermally ultra-conductive and non-corroding pipes and fittings. Because of the extreme rigidity and brittleness of these, our structure is designed with masonry-like constraints on duct layout: Must rest on floor--never two attachments to anything--must not rely wholly on cement for stability.The J-duct becomes hot from the radiation in combustion chamber. It serves to heat secondary air and delivers it at suitable discharge regions from which it will join the base of the entering flame.The tip of J's long leg is outside chamber and gets secondary air from blower. This leg extends into chamber through its front wall then, curving around, its short leg extends forward and ends at location next to front wall's hot face.

Abstract: A vaporizer and burner unit for an oil or kerosene space heater comprises three elongated, vertically stacked fuel mixture flow chambers A, B and C respectively defined between a lower U-shaped frame member 19b and the sloping bottom wall 26 of a flanged, upper U-shaped frame member 19a nested on the lower member, between the wall 26 and an inverted V-shaped pressure plate 27 having a plurality of fuel mixture feed holes 28 therein, and between the plate 27 and a burner plate 30 having a plurality of flame slits 31 therein. Fuel is fed into one end of the chamber A onto a heated vaporizer block 21, and combustion air blown in through a side window 24 adjacent the block and through a concentric gap 25 around the fuel supply line 12 mixes with the vaporized fuel and flows down chamber A and into chamber B through an end opening 29. The mixture then disperses through the holes 28 into chamber C and through the flame slits 31 to a spark igniter 62.

Abstract: This invention relates to improvements in the art of liquid fuel combustion and, more particularly, concerns a method and apparatus for the controlled gassification of liquid fuels, the thorough premixing of the then gassified fuel with air and the subsequent gas-phase combustion of the mixture to produce a flame substantially free of soot, carbon monoxide, nitric oxide and unburned fuel.