Abstract: The invention relates to a method for exchanging heat contained at a fluid. A gas which is heated indirectly and emits infrared radiation is used as the fluid, said fluid being guided to the heat exchanger via an inlet and through art absorber chamber in the heat exchanger, and at least one surface, which absorbs the infrared radiation of the gas in order to use the heat of the gas, is provided in the absorber chamber. The mass flow and the temperature of she gas are additionally adjusted and the at least one surface which is absorbent for the heat exchange is designed such that the ratio ? of the heat flowing through the surface as a result of absorption to the total heat flowing through the surface is ?0.6 during operation. Thus, a simpler and less expensive heat exchanger can be implemented.

Abstract: A modular industrial energy transfer system includes a shell and at least one energy transfer unit coupled to the shell. The shell includes a plurality of sidewalls, a ceiling member coupled thereto, and a plurality of mounting structures disposed along the shell. The plurality of sidewalls and the ceiling member cooperate to define an interior volume to accommodate a work product. The at least one energy transfer unit is coupled to the shell via at least one of the plurality of mounting structures and is partially disposed through the shell to generate an airflow pattern through the interior volume of the shell.

Abstract: A conduit for transport of a fluid, the conduit comprising: a wall extending around and along an axis extending parallel to a direction of bulk fluid flow. The wall having an inner surface defining an interior of a channel through which fluid flows; and a plurality of projections extending from the inner surface of the wall. The plurality of projections extend around the axis, in a plane perpendicular to the axis; and wherein the projections have a height perpendicular to the axis into the channel, and the height is arranged such that the projections modify the flow of fluid at a boundary layer of the fluid adjacent the wall. The conduit is arranged to carry a first fluid; the conduit includes an opening for introducing a second fluid into the channel such that the first and second fluid are mixed downstream of the opening and the plurality of projections are provided upstream of the opening, in a direction of fluid flow.

Abstract: A lean burn combustor includes a plurality of lean burn fuel injectors, each including a fuel feed arm and a lean burn fuel injector head with a lean burn fuel injector head tip, wherein the lean burn fuel injector head tip has a lean burn fuel injector head tip diameter, the lean burn fuel injector head including a pilot fuel injector and a main fuel injector, the main fuel injector being arranged coaxially and radially outwards of the pilot fuel injector; and a combustor chamber extending along an axial direction for a length and including a radially inner annular wall, a radially outer annular wall, and a meter panel defining the size and shape of the combustor chamber, wherein the combustor chamber includes primary and secondary combustion zones. A ratio of the combustor chamber length to the lean burn fuel injector head tip diameter is less than 5.

Abstract: An apparatus includes first and second mixer tubes. The first mixer tube contains a first gas flow passage having an inlet communicating with the source of fuel gas and an outlet to a combustion chamber. The second mixer tube contains a second gas flow passage having an inlet communicating with the source of combustion air and an outlet to the combustion chamber. The apparatus further includes premix control means for forming fuel gas-combustion air premix in the second passage by directing fuel gas from the first passage into the second passage, and for alternatively forming fuel gas-combustion air premix in the first passage by directing combustion air from the second passage into the first passage.

Abstract: Liquid is delivered into a void between a burner and a melt vessel, which causes a skull of a material to form within an interior of the melt vessel. The void is in fluidic communication with the interior of the melt vessel. The burner is moved from a first position internal to the void to a second position external from the void. Thereafter, the burner is isolated from the void.

Abstract: The invention relates to a submerged combustion burner (1) and to a melter comprising submerged combustion burners (1). The burner comprises a substantially parallelepipedic body, the melt oriented face of which shows a longitudinal slot, two opposite walls of the slot comprising a series of nozzles each supplied separately with fuel and oxygen containing gas. The slot advantageously shows a narrow opening comprised between 10 and 30 mm, preferably between 15 and 25 mm, most preferably about 20 mm. The burner is advantageously made of steel plates, preferably high temperature resistant steel. The walls of the slot as well as the melt oriented face of the burner are advantageously cooled.

Abstract: A panel for a combustor of a gas turbine engine includes a cold side defining at least one convex portion and at least one concave portion. The concave portion is in communication with a passage. A method of operating a combustor section of a gas turbine engine includes: directing an impingement flow toward a multiple of peaks on a cold side of a panel; directing the impingement flow from the multiple of peaks toward a multiple of troughs with a multiple of entrances on the cold side of the panel; and directing the impingement flow through the multiple of entrances and a respective multiple of effusion passages through the panel.

Abstract: Processes and systems for producing glass fibers having regions devoid of glass using submerged combustion melters, including feeding a vitrifiable feed material into a feed inlet of a melting zone of a melter vessel, and heating the vitrifiable material with at least one burner directing combustion products of an oxidant and a first fuel into the melting zone under a level of the molten material in the zone. One or more of the burners is configured to impart heat and turbulence to the molten material, producing a turbulent molten material comprising a plurality of bubbles suspended in the molten material, the bubbles comprising at least some of the combustion products, and optionally other gas species introduced by the burners. The molten material and bubbles are drawn through a bushing fluidly connected to a forehearth to produce a glass fiber comprising a plurality of interior regions substantially devoid of glass.

Abstract: A combustor (10) includes a liner (12) that defines a combustion chamber (18) first pre-mix chamber (14) is upstream of the combustion chamber, and a fuel plenum (40) in fluid communication with the first pre-mix chamber surrounds a least a portion of the first pre-mix chamber. A method of supplying a fuel to combustor includes flowing the fuel over an outer surface of a first pre-mix chamber and into the first pre-mix chamber.

Abstract: A reduced drag projectile is provided. The projectile includes a conductive shell that has a leading end and a trailing end. The conductive shell forms an interior volume. The projectile includes a conductive bullet core disposed at least partially within the interior volume. The conductive bullet core has a leading end element and is electrically insulated from the conductive shell. A voltage system is electrically coupled to the conductive shell and electrically coupled to the conductive bullet core. The projectile is configured to expose the leading end element to the atmosphere during flight, and the voltage system is configured to, during flight, generate a voltage at the leading end element that forms a corona discharge at the leading end element.

Abstract: An oxy-fuel burner arrangement having a first conduit having a nozzle aperture with an aspect ratio, D1/D2, of greater than or equal to about 2.0. The first conduit is arranged and disposed to provide a first fluid stream, where the first fluid stream is a combustible fuel. The burner arrangement further includes at least one second conduit arranged and disposed to provide a second gas stream circumferentially around the first fluid stream, where the second gas stream includes oxygen. A precombustor is arranged and disposed to receive the first fluid stream and second gas stream where an oxy-fuel flame is produced. The geometry of the nozzle aperture and the cross-sectional geometry of the first conduit are dissimilar.

Abstract: A heat gun for treating a surface to destroy weeds and unwanted vegetation uses a lightweight jet engine to generate a hot blast of combustion exhaust, with an optional injector in an engine jacket arranged over the jet engine admixing water with the hot exhaust. The combustion exhaust is discharged through an exhaust nozzle and directed by a shield downwardly into contact with the surface to be treated. The engine is controlled electronically and advanced on a lightweight frame, which may be fitted with a ballast weight and spacer wheels, or be mounted on an advancing arrangement. The jet engine is powered by liquid fuel supplied from a tank. Intake air is cleaned and sound-damped in a filter unit. Combustion takes place at a high pressure and the exhaust discharged hot in a high velocity exhaust stream which instantaneously destroys weeds and unwanted vegetation in the soil contacted therewith.

Abstract: An ignition system and method of igniting the ignition system includes a main catalyst section in a staged relationship with a pilot-catalyst section to stage a decomposition though the pilot-catalyst section which preheats the main catalyst section.

Abstract: An apparatus for combustion steam generation is provided, which includes a combustion chamber having an inlet end and an outlet end; a manifold at the inlet end configured to introduce a fuel and an oxidizer into the combustion chamber; an outer casing defining a coolant chamber between the outer casing and the combustion chamber; and a plurality of converging coolant inlets for conducting coolant from the coolant chamber into the combustion chamber at or near the outlet end of the combustion chamber. The converging coolant inlets are radially disposed around the combustion chamber and preferably configured to produce a converging-diverging nozzle from the coolant conducted into the combustion chamber. The device may be used in systems and methods for enhanced recovery of subterranean hydrocarbons, by deployment into and operation in a wellbore, where the produced steam and combustion gases are injected into a hydrocarbon formation to enhance hydrocarbon recovery.

Abstract: The invention relates to a hot air internal ignition burner/generator comprising an injection device used for producing a high-speed fuel gas mixture stream and for injecting said stream into the burner head (2) which is tabular-shaped and comprises in-series arranged therein a pressure recovery chamber (10), an igniting chamber (11) and simple or multiple diffusion means (24) which are fixed inside the head (2), where two chambers are jointed, wherein said diffusion means (24) comprise a central orifice provided with an igniting tube which penetrates therein and axially extends inside the pressure recovery chamber (10) in such a way that it defines the ignition chamber (43) provided with igniting electrodes (42) connected to the pressure recovery chamber (10) of the burner (2) via a calibrated orifice (46).

Abstract: In a highly efficient recuperator burner, which comprises at least one combustion chamber for warm-up operation and is otherwise set up for FLOX® operation, and a recuperator for preheating combustion air by means of thermal exhaust gas energy in a counter-current heat exchange mode via heat exchanger pipes, each heat exchanger pipe has, in a heat exchange section thereof, a flattened gap cross-section and, at its end facing a volume to be heated, a nozzle cross-section, which differs from the flattened gap cross-section of the heat exchanger pipe.

Abstract: An apparatus for combustion steam generation is provided, which includes a combustion chamber having an inlet end and an outlet end; a manifold at the inlet end configured to introduce a fuel and an oxidizer into the combustion chamber; an outer casing defining a coolant chamber between the outer casing and the combustion chamber; and a plurality of converging coolant inlets for conducting coolant from the coolant chamber into the combustion chamber at or near the outlet end of the combustion chamber. The converging coolant inlets are radially disposed around the combustion chamber and preferably configured to produce a converging-diverging nozzle from the coolant conducted into the combustion chamber. The device may be used in systems and methods for enhanced recovery of subterranean hydrocarbons, by deployment into and operation in a wellbore, where the produced steam and combustion gases are injected into a hydrocarbon formation to enhance hydrocarbon recovery.

Abstract: A hot air blower includes a shell including a fan mechanism, a combustion device, a vane mechanism, and a flame protector disposed therein. The vane mechanism includes a clipping seat and a plurality of guiding vanes extended thereon. The plurality of guiding vanes extend obliquely and prevents the air passing through the vane mechanism from generating turbulence. The clipping seat and the flame protector form a half-closed combustion chamber therebetween. Heat in the half-closed combustion chamber causes a thermal expansion of the air and, thereby increasing a speed and a volume of the air passing the guiding vanes of the vane mechanism. The heated air is discharged from an external flow tube and which controls a heating range of an area of the hot air blower.

Abstract: A underwater cutting torch having a control valve assembly, a check valve assembly and a torch head all positioned within a housing. The control valve assembly and check valve assembly include a passageway for gasses to flow that includes a coupler formed of PTFE material to inhibit combustion within the handle of the underwater cutting torch.

Abstract: The present invention is directed to a process for the clean and convenient combustion of high viscosity liquid fuels, such as glycerol, as well as an apparatus useful for carrying such processes. In certain embodiments, the invention provides a process for glycerol combustion comprising providing a combustion apparatus with a glycerol combustion chamber that facilitates reflective heating, pre-heating the glycerol combustion chamber, atomizing the reduced viscosity glycerol, and combining the atomized glycerol with air in the glycerol combustion chamber to thereby completely combust the glycerol. In one embodiment, such as when using a pressure-atomizing nozzle, the inventive method may further comprise treating the glycerol to reduce the glycerol viscosity.

Abstract: A heat gun for cleaning and heat treating surfaces uses a lightweight jet engine to generate a hot blast of exhaust, with aggregate injectors in an engine jacket arranged over the jet engine admixing a cleaning medium with the hot exhaust. The cleaning medium admitted into the hot exhaust jet is discharged through an exhaust nozzle 1 directed at the item to be treated. The engine is controlled electronically and advanced on a lightweight frame 5, which may be fitted with a ballast weight 9 and spacer wheels 10, or be mounted on an advancing arrangement 8. The jet engine is powered by liquid fuel supplied from a tank 6. Intake air is cleaned and sound-damped in a filter unit 3. Combustion takes place at a high pressure and the exhaust discharged hot in a high velocity exhaust jet containing the cleaning media.

Abstract: A hot air generating device of the type including an injection device (2) capable of producing a flow of a combustible gas mixture at a high speed and a burner head (3) in which the flow is ignited via a spark plug (6) positioned near the burner (3) and electrically connected to a lighter (12), preferably a piezoelectric lighter, including an autotransformer mounted in parallel between the lighter and the spark plug. Such a device is particularly advantageous to facilitate the lighting of the mixture, in particular when the device is provided with a riser between the lighter and the spark plug.

Abstract: A heat-shrink gun in which an ignition voltage of the gaseous mixture is generated by a piezoelectric lighter (12), under the action of a trigger (8) when it is moved from a waiting position (8A) to a lighting position, characterized in that the trigger can also assume a loading position (8B), in which it free access (DC) to a working housing for the lighter.

Abstract: A torch igniter and method of cooling the torch igniter includes axially flowing a first stream of gaseous oxidizer through a torch throat and vortically flowing a second stream of the gaseous oxidizer within a combustion chamber.

Abstract: A burner assembly for lean, low NOx combustion may include a gaseous fuel manifold, counter-swirl vanes, and a converging nozzle with bluff body flame anchors. A cooling air tube optionally extends from the air inlet to the nozzle.

Abstract: A burner comprises a body, a nozzle, and at least one attachment element for removably attaching the nozzle to the body. The body defines an oxidant inlet, a feedstock inlet, a body outlet, and one or more passages for conveying the oxidant from the oxidant inlet to the body outlet and for conveying the gasification feedstock from the feedstock inlet to the body outlet. The nozzle defines a nozzle inlet and a nozzle outlet, wherein the nozzle inlet is configured to receive the oxidant and the gasification feedstock from the body outlet and the nozzle outlet is configured to discharge the oxidant and the gasification feedstock into the reaction chamber. The at least one attachment element removably attaches the nozzle to the body such that the nozzle inlet is in fluid flow communication with the body outlet when the nozzle is attached to the body.

Abstract: The industrial burner comprising a mixing chamber, which is provided with at least one opening into a furnace room, through which opening at least a partially-mixed fuel flow from the mixing chamber dispenses into the furnace room during operation. A combustion air supplier, through which the mixing chamber is supplied with combustion air during operation, and a fuel supplier, with which fuel is introduced into the mixing chamber, are provided. The fuel supplier can switch between a first and a second operation state, wherein in the first operation state, fuel is introduced into the mixing chamber at a first angle, and in the second operation state, fuel is introduced into the mixing chamber at substantially the same axial position with respect to the opening as in the first operation state and at a second angle with respect to the axial direction of the mixing chamber.

Abstract: A burner comprises a body, a nozzle, and at least one attachment element for removably attaching the nozzle to the body. The body defines an oxidant inlet, a feedstock inlet, a body outlet, and one or more passages for conveying the oxidant from the oxidant inlet to the body outlet and for conveying the gasification feedstock from the feedstock inlet to the body outlet. The nozzle defines a nozzle inlet and a nozzle outlet, wherein the nozzle inlet is configured to receive the oxidant and the gasification feedstock from the body outlet and the nozzle outlet is configured to discharge the oxidant and the gasification feedstock into the reaction chamber. The at least one attachment element removably attaches the nozzle to the body such that the nozzle inlet is in fluid flow communication with the body outlet when the nozzle is attached to the body.

Abstract: A method comprises providing a combustion apparatus having an outer vessel and an inner conduit. The outer vessel has a first wall that defines an internal volume. The inner conduit is at least partially positioned within the internal volume and provides a fluid passageway that is in communication therewith. The method further comprises introducing oxygen into the internal volume in a manner such that the oxygen swirls within the internal volume and around the inner conduit. Furthermore, the method comprises introducing fuel into the internal volume, and combusting the fuel and oxygen at least partially therewithin. The combustion of the fuel and oxygen produces reaction products and the method further comprises discharging at least some of the reaction products from the internal volume via the fluid passageway of the inner conduit.

Abstract: The invention relates to a device and a method for producing an operating medium for a motor vehicle, especially for use in the exhaust gas post-treatment of the motor vehicle. According to said method, an operating medium is produced from an initial product and air using a catalyst device. Said initial product is heated and mixed with air and the heated mixture of initial product/air is fed to the catalyst device. A part of the initial product is converted to the gaseous phase by means of a preheating element and is entrained by a stream of air when leaving the preheating element, said stream of air leading to a combustion chamber. The method allows to efficiently produce an operating medium, especially a reducing agent for regenerating NOx storage catalysts.

Abstract: Inorganic fiber production burner apparatus and methods of use are disclosed. One burner includes a refractory block adapted to be in fluid connection with sources of primary oxidant and fuel, the refractory block having a fuel and primary oxidant entrance end and a flame exit end, the flame exit end having a substantially rectangular flame exit having a width greater than its height, the refractory block defining a combustion chamber and a second chamber fluidly connecting the combustion chamber and the flame exit end; and an oxygen manifold fluidly connected to the combustion chamber and adapted to route oxygen to the combustion chamber through a plurality of passages through the refractory block. This abstract allows a searcher or other reader to quickly ascertain the subject matter of the disclosure. It will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b).

Abstract: A startup burner assembly for use in snow melting applications, and which permits initiation of snow melting without first supplying water as a coolant. The startup burner assembly comprises a fuel burner having adjustable combustion output and a nozzle to facilitate the emergence of products of combustion, and a combustion chamber having a first portion in substantially air-tight communication with the fuel burner and enclosing the nozzle and a second portion shaped and dimensioned for disposition into a snow melting receptacle or pit. The combustion chamber has a plurality of discharge holes formed at least on the second portion thereof to permit the egress of products of combustion from the fuel burner into the tank or pit, and thereby permit agitation and melting of snow loaded therein, The startup burner assembly also includes an air cooling assembly for supplying air to cool at least the first portion of the combustion chamber.

Abstract: A method and system feed and burn pulverized fuel, such as petroleum coke, in a glass melting furnace having burners associated with sealed regenerative chambers which act as heat exchangers. The system supplies the pulverized fuel for melting glass raw materials. The emissions of flue gases produced by the combustion process of the fuel in the furnace are controlled in order to maintain clean the flue gases and for reducing the emission of impurities from the fuel such as SOx, NOx, and particulates. The regenerative chambers are manufactured with selected refractories such as magnesium, zircon-silica-alumina, or magnesia and zirconium-silicate, for counteracting the erosive and corrosive effects produced by the combustion process of the fuel in the glass melting chamber. A burner feeds the petroleum coke and simultaneously mixes a primary air and pulverized fuel-air mixture for the burning of the pulverized fuel.

Abstract: A device including a burner (6) for directing a fuel/air mixture into a reaction chamber (2) for flameless oxidation of fuels. The burner (6) discharges a fuel/air jet transversely to a longitudinal axis (A) of the burner and an exhaust gas channel (17) is arranged in or on the burner concentric or parallel to the burner longitudinal axis (A). An outlet direction (R) of the fuel/air jets from the burner and the direction (A) of the exhaust gas channel cross each other. Hence, the burner introduces fuel parallel or at an angle to the wall into the furnace chamber where the burner is mounted for flameless oxidation of the fuel.

Abstract: A combustion burner includes an air supply case connected to an air supply mouth a position at a position on the air supply case from a rear end part to a tip portion thereof, which supplies air from air supply equipment; a nozzle body attached so as to cover a tip portion of the air supply case, and having a jet nozzle formed in a center part of the nozzle body; a fuel nozzle in the nozzle body so as to supply air from the air supply case through an air jet hole, placed between the tip perimeter part of the fuel nozzle and the jet nozzle, having a frusto-conically shaped fuel supply passage, and which supplies air from a tip portion thereof; a plurality of air guide holes provided between an outer circumferential portion of the fuel nozzle and the nozzle body so as to supply air from the air jet hole in a spiral pattern; a fuel supply support member in the fuel supply passage, which supplies fuel from at least two fuel supply holes in an opposite spiral pattern from the tip end of the fuel nozzle; and at lea

Abstract: A funnel-shaped concentrator that is attachable to the outlet of a standard cast iron burner is disclosed. The concentrator directs the flame produced by the burner toward the outlet of the concentrator causing the flame emanating therefrom to be directed toward the container being labeled. One or more layers of refractory insulating material are placed along the sides of the concentrator, the body of the burner and the top and bottom surfaces of the concentrator so as to minimize the amount of infrared radiation emanating therefrom. In this manner, the containers being labeled or on which a label has been affixed are exposed only to the flame being directed outwardly from the outlet of the concentrator and the amount of infrared radiation to which the containers is exposed is greatly reduced.

Abstract: An atomizing nozzle for a burner, especially for a heater that can be used on a vehicle includes a first flow guide element (34), which provides a flow guide surface (40) and has an atomizing lip (48) in an axial end area in relation to a central axis (A) of the nozzle, a second flow guide element (36) defining a first flow space area (30) leading to the atomizing lip (48) together with the first flow guide element (34). A fuel feed device (54) in the second flow guide element (36) is provided for applying fuel through the first flow space area (30) onto the flow guide surface (40) of the first flow guide element (34). Provisions are made for the fuel feed device (54) to have at least one fuel feed channel section (58) in the second flow guide element (36), which said fuel feed channel section (58) is open toward a surface area (44; 44′) of the second flow guide element (36) and has a surface normal radial component different from zero.

Abstract: An improved torch igniter for use in devices such as thrust augmenters, gas turbine engines, ramjets, combined-cycle engines and industrial burners. The torch igniter includes a housing with a combustion chamber. Fuel and oxidizer are delivered into the combustion chamber and ignited by an electronic ignition source, such as a plasma jet igniter or a spark igniter, so that an upstream recirculation zone and a downstream recirculation zone are created. The upstream recirculation zone stabilizes and pilots combustion within the combustion chamber, while the downstream recirculation zone augments the combustion event. Byproducts of the combustion event within the torch igniter provide a high mass flux with high thermal energy and strong ignition source radicals that are discharged through a neck portion of the housing and are thereafter employed to initiate a primary combustion event in a primary combustor.

Abstract: A funnel-shaped concentrator that is attachable to the outlet of a standard cast iron burner is disclosed. The concentrator directs the flame produced by the burner toward the outlet of the concentrator causing the flame emanating therefrom to be directed toward the container being labeled. One or more layers of refractory insulating material are placed along the sides of the concentrator, the body of the burner and the top and bottom surfaces of the concentrator so as to minimize the amount of infrared radiation emanating therefrom. In this manner, the containers being labeled or on which a label has been affixed are exposed only to the flame being directed outwardly from the outlet of the concentrator and the amount of infrared radiation to which the containers is exposed is greatly reduced.

Abstract: The invention relates to a streamlined body for influencing the flow dynamics of a fluid, wherein the streamlined body at least partly corresponds to a rotationally symmetrical airfoil. A streamlined body of this kind can be used in a number of ways, for example as an impact member, as a flow regulator or as a heat exchanger. It also evens out and accelerates flows. It is used to particular advantage in a mixing and reaction chamber for burning fuels.

Abstract: The invention relates to a radiant device with a burner of the “glove finger” type, comprising an exchanger (3) for heating air (T1) by the burned gases (T2), a furnace tube (6) drilled with air-intake orifices (60) and terminated by a nozzle (61) disposed facing a recirculation tube (4), and a central gas-injection tube (7). According to the invention, the central injection tube (7) is fed with gaseous fluids in proportions that can be regulated by means of one or two valves (710, 720), via two conduits (71, 72), the first (71) of which transports at least gas and the second (72) of which transports at least air, and the central injection tube (7) ends at a burner (8), which is disposed in the furnace tube (6) and which discharges at the level of the nozzle (61), this arrangement making it possible to adapt existing devices very easily for the purpose of reduced production of nitrogen oxides.

Abstract: A method of combustion and an apparatus therefor in which separate streams of very lean and very rich fuel/oxidant mixture are combusted separately, the products of combustion therefrom being thoroughly mixed before final combustion takes place. The lean/rich primary combustion minimizes combustion temperatures and pollutant formation, whilst the final combustion is substantially stoichiometric.

Abstract: In an ignition appliance for a heat generator, the supply lines for air (70) and fuel gas (60) are led directly into a flame tube (40). The igniter (51) is arranged in an ignition space (50) remote from the flame tube (40) and connected to the flame tube (40). The ignition space (50) is connected to the air supply passage (70) and the gas supply passage (60) via connecting ducts (55, 56). If the supply passages for air and fuel gas (70, 60) are dimensioned so as to be sufficiently large, the pressure drop between the inside of the ignition space (50) and the feed lines (60, 70) is small. The fuel/air ratio present at the igniter (51) is therefore essentially determined only by the ratio of the cross sections of the connecting ducts (55, 56). The flow relationships in the ignition space (50) are likewise substantially decoupled from the air and fuel gas flows supplied overall to the ignition appliance.

Abstract: There is disclosed a device for producing a hot propellant jet intended to atomize, and subsequently vitrify, liquid inorganic melts such as, for instance, slags or glass, including a burner chamber. The burner chamber has inlet openings for water and/or vapor distributedly arranged in the axial direction and about the periphery of the flame in a wall surrounding the burner axis and forming an annular chamber with the wall of the burner chamber. A lance including a nozzle is connected to the burner chamber.

Abstract: A system for providing gases into an injection volume in one or more coherent gas jets proximate to one or more turbulent gas jets wherein a coherent gas jet is formed in a forming volume with a flame envelope prior to passage into the injection volume into which the turbulent gas jets are directly passed.

Abstract: A method and apparatus for adjusting the flame exit velocity of a high velocity burner. The burner includes burner combustor chamber having a fluid accelerating nozzle and a burner combustor exhaust port. Fuel is delivered to the burner combustor through a fuel inlet. An ignitor is provided to initiate combustion of the fuel which is mixed with air from an air inlet. An adjusting device is provided to vary the flame exit area of the burner. The adjusting device includes an adjusting rod connected to an extension rod which preferably extends through the burner ignition chamber to the burner combustion exit port. For example, a tapered plug is attached to the end of the extension rod. The tapered plug is tapered in a direction decreasing toward the burner combustion exit port and can include fins attached around a periphery of the plug.

Abstract: A gas fired low emission air heater for a cup making machine having a combustion chamber and a venturi block mounted on the inlet end of the combustion chamber and having a tapered venturi passage in the venturi block. An air inlet nozzle is aligned with the venturi passage and an annular gas ring formed around the nozzle for directing gas into the venturi passage. A discharge nozzle is mounted on the outer end of the combustion chamber and a metal matt assembly mounted in the combustion chamber. The metal matt assembly including one or more perforated mixing plates and a metal matt aligned with the mixing plates. A spark plug is mounted in the combustion chamber for igniting the gas/air mixture prior to discharge of the heated air into the cup making machine.

Abstract: A jet pump for a heat gun includes an elongate hollow pump body lying along a longitudinal axis. The pump body has an inlet, a mixing section and an outlet. A nozzle unit is axially aligned with the inlet for directing pressurized fuel into the inlet of the pump body. Movement of the pressurized fuel into the inlet causes air to be drawn into the inlet to mix with the fuel within the pump body. A disk shaped air diverter is axially spaced away from the inlet of the pump body. The diverter has a length and a diameter. The diameter of the diverter is greater than the length of the diverter and larger than the inlet of the pump body. A housing is radially spaced from and surrounds the diverter forming a first annular gap therearound for air outside the housing to pass therethrough. The air moves around the diverter then changes direction between the diverter and the inlet of the pump body before entering the inlet.

Abstract: A burner arrangement for ferrous scrap melting and the like includes a fuel outlet and a primary oxidant supply outlet communicating with a mixing chamber. The burner also has a main outlet and secondary oxidant supply outlets. In addition there is a convergent-divergent nozzle communicating with the mixing chamber. Valves control the flow of gaseous fuel to the fuel outlet, and the flow of primary and secondary oxidant to the primary and secondary oxidant supply outlets. In operation, oxidant is supplied to the primary and secondary outlets, hot flame or combustion gases are accelerated through the nozzle with the result that a sonic or supersonic velocity can be created. Such high velocities facilitate the penetration of the combustion gases through a slag layer into molten metal.