Abstract: An injector for delivering a working fluid into a working environment is disclosed. According to one embodiment of the present invention, the injector includes a pre-metering chamber and a swirl chamber. A high velocity partially atomized flow is produced in the pre-metering chamber through a first exit nozzle after impinging on an atomization element, and then a swirling flow is created in the swirl chamber with the atomization element. When the swirling flow is released through a second exit nozzle, atomization can be achieved at low injector pressure with centrifugal force and shearing of the working fluid. In another embodiment, the injector includes a swirl chamber and an atomization element with a bore, through which a control valve is positioned. The control valve forces a working fluid flow through the atomization element when the injector is energized to create a swirling flow. No flow-back is required for the injectors.

Abstract: The present invention provides a gas-liquid two-phase atomizing cleaning device. The cleaning device comprises a gas-liquid two-phase atomizing spray head. The spray head is a double jacket structure and comprises a nozzle, a rotating arm, a gas guide tube and a liquid guide tube; wherein the nozzle is connected with the rotating arm, the gas guide tube and the liquid guide tube are fixed to the rotating arm, the gas guide tube and the liquid guide tube are both provided with pneumatic valves.

Abstract: A fuel nozzle (2) for two fuels, with an inner pipe (5) with radially oriented outlet openings (7) for a first fuel and with an outer pipe (6), surrounding the inner pipe (5), with axially oriented outlet openings (10) for a second fuel; an axially extending groove (18) on an outer surface of the inner pipe (5) and a projection (19) inward from the outer pipe which engages in the groove (18) as an anti-torsion device (17) and which is arranged between two axial outlet openings (10). Alternative groove and projection configurations are disclosed.

Abstract: A cylindrical mixer having an opening portion on both ends forms an axial flow path and a first fluid introduced into the axial flow path through the opening portion at one end flows therethrough in the axial direction and the first fluid exits from the opening portion at the other end; and a spiral flow path and a second fluid introduced into the spiral flow path through a hole formed in a peripheral wall of the mixer is made to flow along an inner peripheral surface of the mixer while being swirled in a spiral manner about an axis of the axial flow path so that the first fluid and the second fluid are mixed and a mixture of the first fluid and the second fluid exits from an opening potion at the end to refine and homogenize a dispersion phase on a micro level to a sub-micro level.

Abstract: A fuel injector nozzle assembly includes a body extending along an axis and a core swirl plug positioned at least partially within the body. The core swirl plug has a flow modifying structure configured to swirl fuel at a location upstream from a distal end of the nozzle assembly.

Abstract: A fuel nozzle assembly (10) is presented for a gas turbine engine (12). The fuel nozzle assembly (10) includes a rocket unit (14) and a swirler (16) with an aft end (18) in threaded engagement with a forward end (20) of the rocket unit (14). The fuel nozzle assembly (10) may include an oil tip (36) including a clocking feature with a mechanical constraint to orient the oil tip (36) at a predetermined angular orientation (42) relative to the swirler (16). The fuel nozzle assembly (10) may include one or more gas stage inlets (13, 15), one or more oil stage inlets (17, 19), and a flexible hose (26) to direct the oil to a plurality of rocket units (14).

Abstract: A multipoint injector includes a nozzle body defining a fluid inlet in fluid communication with a plurality of feed bores. A plurality of swirl chambers is defined radially outward from the fluid inlet of the nozzle body in fluid communication with the fluid inlet through the feed bores. A plurality of injection orifices are respectively aligned in fluid communication with the swirl chambers for issuing a swirling spray of fluid passing from each swirl chamber through each injection orifice.

Abstract: A hand-held paint spray gun apparatus having a paint reservoir on the gun and reciprocating piston driven by a motor in the hand-held paint spray gun, the gun having a multiple orifice spray tip with a pair of apertures emitting generally fan or cone shaped overlapping spray patterns. A locking nut retains the cylinder to a motor frame and a frame carries the spray tip, with one of the nut and frame having a corrugated surface and the other of the locking nut and the spray tip frame having a plurality of protrusions engaging the corrugated surface. The protrusions are spaced apart circumferentially from each other and with respect to the spacing of a plurality of troughs and crests in the corrugated surface such that only one protrusion at a time is nested in a trough of the corrugated surface.

Abstract: A multipoint injector includes a nozzle body defining a fluid inlet in fluid communication with a plurality of feed bores. A plurality of swirl chambers is defined radially outward from the fluid inlet of the nozzle body in fluid communication with the fluid inlet through the feed bores. A plurality of injection orifices are respectively aligned in fluid communication with the swirl chambers for issuing a swirling spray of fluid passing from each swirl chamber through each injection orifice.

Abstract: In certain embodiments, a feed injector system includes an inner channel configured to convey at least one of a solid fuel feed or a liquid reactant or moderator to a reaction zone. A first oxidizer channel extends around the inner channel, wherein the first oxidizer channel is configured to convey a first oxidizer stream to the reaction zone. A second oxidizer channel extends around the first oxidizer channel, wherein the second oxidizer channel is configured to convey a second oxidizer stream to the reaction zone. Additionally, a third channel extends around the inner channel and the first and second oxidizer channels, wherein the third channel is configured to convey at least one of the solid fuel feed or the liquid reactant or moderator to the reaction zone.

Abstract: A swirler for fuel injection in a gas turbine engine includes a frustoconical swirler body. A first and a second air flow path direct air in generally opposed circumferential directions into the swirler. These air paths intermix and create turbulence. As this turbulence encounters fuel droplets, the fuel is atomized, and uniformly distributed within the air flow. A shear layer is created adjacent an inner surface of the swirler body. In a separate feature, a third air flow path is directed into the air.

Abstract: A fluid dispenser device comprising a pre-compression pump (6) and a dispenser head (T); the pump including an actuator rod (65) that is movable downwards and upwards, and a pre-compression spring (69) for increasing the pressure in a pump chamber (60); the head (T) including an inlet well (14) for connecting to the actuator rod (65), and a nozzle (4) for forming a spray through a dispenser orifice (43), the nozzle being mounted in an assembly housing (2); the dispenser device being characterized in that: the pre-compression spring (69) presents stiffness that is less than about 3 N/mm, e.g. of about 1 N/mm to 3 N/mm; and at least two feed ducts (15), each connecting the inlet well (14) to the assembly housing (2).

Abstract: A nozzle assembly (10) comprises a first-fuel-inlet tube (80), a second-fuel-inlet tube (90), and a plate stack (100). The nozzle-plate stack (100) defines a central circuit (104), corner air circuits (105), a first fuel circuit (106) and a second fuel circuit (107). The fuel circuits (106, 107) include a swirl chamber in which the fuel is swirled prior to being merged with the central circuit (104). The corner air circuits (105) merge with the central circuit (104) downstream of the fuel circuits' merge and provide an additional swirling component to further shape the fuel-air stream prior to ignition.

Abstract: A wide protection range can be ensured by extending the flying distance of fire-extinguishing agent particles electrified and sprayed from a head. A water-based fire-extinguishing agent is pressurized and supplied to an electrification spray head 10 installed in a protection area A via a pipe, the jetted particles of the fire-extinguishing agent are electrified and sprayed from the electrification spray head 10. The electrification spray head mixes and sprays the fire-extinguishing agent having a comparatively small particle size included in a range from 30 ?m to 200 ?m by a small-particle jetting nozzle 38a and the fire-extinguishing agent having a comparatively-large particle size of 200 ?m to 2000 ?m by a large-particle jetting nozzle 38b, thereby carrying the group of the fire-extinguishing-agent particles having the small particle size by the air current caused by spraying the group of the fire-extinguishing-agent particles having the large particle size.

Abstract: A push-button for a system for dispensing a product under pressure, the push-button including a body having a mounting well on a feed tube for the pressurised product and a housing in communication with the well, the housing being provided with an anvil around which a spray nozzle is mounted in such a way as to form a path for dispensing the product between the housing and a swirl array including at least two swirl chambers, each of the swirl chambers including at least one supply channel in order to provide for the setting in rotation of the product in the chamber and a channel for dispensing a flow of product set in rotation, the dispensing channels each converging from an inlet orifice towards an outlet orifice according to an angle which is arranged in order to allow for the impaction of the flows of product dispensed by the channels.

Abstract: A wide protection range can be ensured by extending the flying distance of fire-extinguishing agent particles electrified and sprayed from a head. A water-based fire-extinguishing agent is pressurized and supplied to an electrification spray head 10 installed in a protection area A via a pipe, the jetted particles of the fire-extinguishing agent are electrified and sprayed from the electrification spray head 10. The electrification spray head mixes and sprays the fire-extinguishing agent having a comparatively small particle size included in a range from 30 ?M to 200 ?m by a small-particle jetting nozzle 38a and the fire-extinguishing agent having a comparatively-large particle size of 200 ?m to 2000 ?m by a large-particle jetting nozzle 38b, thereby carrying the group of the fire-extinguishing-agent particles having the small particle size by the air current caused by spraying the group of the fire-extinguishing-agent particles having the large particle size.

Abstract: A method of manufacturing gas and/or fuel swirlers for fuel injectors and combustor domes and cone-shaped swirlers so manufactured are disclosed. The disclosed conical swirlers feature cut-through slots on a cone-shaped body. The contour and spacing of the slots are configured and arranged to accommodate a wide range of requirements for fluid flow areas and swirl strengths. Preferably, the cone-shaped swirlers can be manufactured by wire EDM processing. More preferably, multiple cone-shaped swirlers can be manufactured simultaneously by nesting swirler blanks in a stack and wire EDM processing the stack as a unit. The cone-shaped pinwheel swirler fits well into various fuel injector heads, enabling the injectors to reduce the frontal surface area and flat area for minimal potential of carbon formation.

Abstract: A device for injecting a mixture of air and fuel into a combustion chamber of a turbomachine is disclosed. The injection device includes a novel sliding bushing and a novel annular cup for retaining the sliding bushing, making it possible to improve the air feed of the injection device.

Abstract: An atomizer spray plate including a body having an inlet surface and an exit surface, a swirl chamber within the body and adjacent to the inlet surface, an atomizer hole extending through the body from the swirl chamber to the exit surface, and a plurality of elongated protrusions upon the inlet surface extending radially from the swirl chamber, wherein the plurality of elongated protrusions define a plurality of venturi inlets to the swirl chamber between adjacent protrusions.

Abstract: An absorbent composite comprising a bound particulate absorbent polymer in which two or more nearly spherical absorbent polymer particles are bound to each other and a web-like absorbent polymer, wherein the bound particulate absorbent polymer and the web-like absorbent polymer are bound to a substrate. The composite has a large absorption and a high absorbing speed in which the absorbent polymer is kept uniformly dispersed on the support throughout before and after absorption.

Abstract: Disclosed is an air-assisted simplex spray nozzle assembly for a fuel burner that includes, inter alia, a nozzle body that has opposed upstream and downstream ends, wherein the downstream end of the nozzle body defines a fuel outlet, an adapter member that is engaged with the upstream end of the nozzle body and defines concentrically positioned air and fuel inlets for the nozzle assembly and an air cap that is positioned over the downstream end of the nozzle body. The nozzle assembly further includes a fuel circuit and a first air circuit. The fuel circuit directs fuel from a fuel pump toward the fuel outlet of the nozzle body. The fuel circuit extends from the fuel inlet of the adapter member through the nozzle body to the fuel outlet. The first air circuit directs assist air towards the fuel exiting from the fuel outlet.

Abstract: An aerosol dispenser assembly is disclosed that includes a container holding a liquid product and a compressed gas propellant for propelling the liquid product from the container. A design methodology for the actuator body and swirl nozzle insert is disclosed for maintaining a small particle size or Sauter Mean Diameter (D[3, 2]) of less than 48 ?m at a suitable spray rate (1.5-2 g/s), while utilizing a compressed gas VOC-free propellant for an air freshener product. As obtaining reduced particle size to compete with LPG propellants may result in a reduced spray rate, it is anticipated that one or more nozzles may be designed into the actuator body to maintain a suitable spray rate.

Abstract: A misting spray nozzle includes a hollow body having an interior wall descending from an upper end to a lower end. The interior wall tapers toward the lower end to form a choke. A channel section provides two fluid paths descending from an upper central aperture. A turbine is sized and shaped to fit closely within the choke and has spiral grooves on its outer surface. The turbine attaches to the body at its upper end and has a cone-shaped opening at its lower end. A conical core is sized and shaped to fit closely within the cone-shaped opening and has grooves spiraling in an opposite direction on its outer surface. The core is attached at its upper end to the turbine. The two sets of spiral grooves define a pair of intersecting fluid control paths that meet at the lower end of the body to create a dense mist.

Abstract: The invention relates to a burner with a burner head (1) and a gas feed pipe (2) that is located in the burner head (1) and that is surrounded by an ring channel (3) for feed of another gas. In the gas feed pipe (2) and in the ring channel (3), there are means (10, 11) for producing a swirl of the gas flowing through the gas feed pipe (2) and that flowing through the ring channel (3).

Abstract: An atomizing injector includes a metering set having a swirl chamber, a spray orifice and one or more feed slots etched in a thin plate. The swirl chamber is etched in a first side of the plate and the spray orifice is etched through a second side to the center of the swirl chamber. Fuel feed slots extend non-radially to the swirl chamber. The injector also includes integral swirler structure. The swirler structure includes a cylindrical air swirler passage, also shaped by etching, through at least one other thin plate. The cylindrical air swirler passage is located in co-axial relation to the spray orifice of the plate of the fuel metering set such that fuel directed through the spray orifice passes through the air swirler passage and swirling air is imparted to the fuel such that the fuel has a swirling component of motion. At least one air feed slot is provided in fluid communication with the air swirler passage and extends in non-radial relation thereto.

Abstract: A method is disclosed for forming a fuel feed passage in the feed arm of a fuel injector. The method includes the steps of providing a fuel feed passage in the feed arm of a fuel injector, whereby the fuel feed passage has an initial cross-sectional flow area that corresponds with an initial fuel flow velocity, an initial convection heat transfer coefficient and initial localized wetted wall temperatures for the fuel feed passage, for a given fuel flow rate and fuel temperature. The method further includes decreasing the initial cross-sectional flow area of the fuel feed passage so as to increase the fuel flow velocity and the convection heat transfer coefficient for the fuel feed passage, while lowering the localized wetted wall temperatures for the fuel feed passage, without varying the given fuel flow rate and fuel temperature.

Abstract: In an atomizer device for the production of a liquid-gas mixture (4), the mixture (4) is introduced, particularly for compression, into a nozzle arrangement (3) in which the kinetic energy of the mixture (4) is in large part converted into compression energy by a pressure rise of the air. The atomizer device (2) includes a central air feed (16) and a nozzle chamber (18) for the supply of liquid surrounding the air feed. At or in the atomizing device, means (17) are arranged in the nozzle chamber for producing a swirled liquid flow in the nozzle chamber (18), and the swirled liquid flow emerges via a nozzle aperture (19) surrounding the air feed.

Abstract: An atomizer for difficult to disperse solutions such as sizing and paper coatings comprising three nozzles defining three channels respectively two of the nozzles comprising fluid-emitting nozzles and the third nozzle comprising a treatment-emitting nozzle. Alternatively, the atomizer comprises two channels respectively comprising a fluid-emitting nozzle and a treatment emitting nozzle.

Abstract: An injection system for a turbomachine combustion chamber, the system comprising a fuel injection nozzle for vaporizing fuel in the combustion chamber and a mixer/deflector assembly coaxial with the injection nozzle and serving to mix fuel and oxidizer and to diffuse the mixture in the combustion chamber, said mixer/deflector assembly comprising a primary swirler and a secondary swirler disposed at a determined distance apart from each other in the axial direction and separated by a Venturi device disposed coaxially with the injection nozzle, the primary swirler being fixed securely to the injection nozzle and being spaced apart therefrom by a constant radial distance which is determined in such a manner that the fuel vaporized by the injection nozzle can under no circumstances impact on the primary swirler. The Venturi device preferably has an inside surface that presents an upstream portion with a slope discontinuity P.

Abstract: A fuel injector 20 for a combustor can 18 includes a pressure atomizing core nozzle and an airblast secondary injector. The airblast portion of the injector includes inner and outer air passages 98, 138 for injecting coannular, coswirling streams of inner and outer air into the combustor can. The injector also includes an air distribution baffle 154 that extends radially across the inner air passage 98 to divide the inner air stream into an annular substream AA and a plurality of air jets AJ.

Abstract: A duplex fuel injector has concentric arrangement of an inner air swirler, an inner fuel injection port, an intermediate axial air filmer, a second air swirler, an outer fuel injection port and an outer air swirler. The intermediate air filmer produces a curtain of air separating an outer air and fuel spray from an inner air and fuel spray. The outer spray is used in a pilot combustion zone whereas the inner spray is used in a main combustion zone.

Abstract: A coal gasification nozzle is disclosed having a barrier, integral with the face of the injector, that fits into a groove of a heat shield attached to the nozzle face. The barrier prevents oxidative corrosion of the shield, and subsequent damage to the underlying face of the feed injector, by preventing diffusion of corrosive species to the threaded ring by which the heat shield is attached to the face of the nozzle. The life of the injector, and thus the length of any single gasification campaign, is thereby extended.

Abstract: An atomizing injector includes a metering set having a swirl chamber, a spray orifice and one or more feed slots etched in a thin plate. The swirl chamber is etched in a first side of the plate and the spray orifice is etched through a second side to the center of the swirl chamber. Fuel feed slots extend non-radially to the swirl chamber. The injector also includes integral swirler structure. The swirler structure includes a cylindrical air swirler passage, also shaped by etching, through at least one other thin plate. The cylindrical air swirler passage is located in co-axial relation to the spray orifice of the plate of the fuel metering set such that fuel directed through the spray orifice passes through the air swirler passage and swirling air is imparted to the fuel such that the fuel has a swirling component of motion. At least one air feed slot is provided in fluid communication with the air swirler passage and extends in non-radial relation thereto.

Abstract: A hybrid atomizing fuel nozzle includes a stem with primary and secondary fuel circuits. A nozzle assembly fixed at the downstream end of the stem includes primary and secondary nozzle portions. A shroud and swirler assembly surrounds the nozzle assembly, and includes an annular body with a prefilmer surface. A radial inflow swirler in the annular body directs a first swirling air flow radially inward toward the secondary nozzle portion. An outer air swirler disposed in surrounding relation to the annular body provides a converging second swirling air flow downstream of the prefilmer surface. Discrete fuel passages direct fuel streams outward and downstream toward and against the prefilmer surface. The fuel passes through the first air flow and is evenly distributed across the prefilmer surface in a thin continuous sheet. The first and second air flows then cause the sheet to form a conical spray of atomized fuel.

Abstract: A burner assemblage includes an elongated, round burner assembly having a central axis and including internal baffle structure. The baffle structure is arranged to cause concentric primary and secondary air flows to move in a direction generally parallel to said axis. The secondary air flow is generally annular in shape and the same is disposed in generally surrounding relationship relative to said primary air flow. The assemblage also includes a swirler structure for swirling the air primary and secondary air flowing through the central portions of the burner. The swirler structure includes a first swirler component located in a position for swirling the primary air flow. The first swirler component has an outer circumferential edge that extends around the axis of the burner in radially spaced relationship thereto. The swirler also includes a second generally annular swirler component located in a position for swirling the secondary air flow independently of the swirling of the primary air flow.

Abstract: A combustor dome assembly includes a spectacle plate having an opening formed therein that defines an inner circumferential edge, at least one swirler assembly defining an inner cylindrical surface, and at least one deflector having an outer cylindrical surface. These components are arranged such that the outer cylindrical surface is joined to the inner circumferential edge and to the inner cylindrical surface. One preferred method of manufacturing the combustor dome assembly includes placing a first ring of joining material over the outer cylindrical surface. Then, the outer cylindrical surface is inserted into the spectacle plate opening so that the first ring is sandwiched between a first surface of the spectacle plate and a shoulder formed on the deflector. A second ring of joining material is next placed over the outer cylindrical surface, and a third ring of joining material is inserted into an annular groove formed in the inner cylindrical surface.

Abstract: A fuel injector including a combustion air flow conduit, a fuel inlet and, swirlers to mix the air and fuel flowing therethrough, additionally comprising fluidic control diverters including at least one control port, such that flow of control air through said control port allows variation in the degree of flow resistance to which combustion air is subjected. For example, control air flowing through the control port may impart swirl to the combustion air flow from the inlet, thereby subjecting the combustion air flow to increased resistance. Alternatively a fluidic diverter may selectively divert the main flow to either the first or second sub-conduits, each sub-conduit subjecting combustion air to different degrees of flow resistance.

Abstract: A low firing rate oxy-fuel burner which may be comprised of commercially available standard components and which includes an oxidant conduit and a fuel conduit within the oxidant conduit. The fuel conduit has a fuel nozzle at the forward end thereof with a fuel swirler in the form of a twist drill positioned therein which is maintained in a an aerodynamically centered position by the flowing fuel stream. The oxidant conduit has an oxidant nozzle at the forward end thereof with an oxidant swirler in the form of helical spring position therein and surrounding the fuel nozzle.

Abstract: A coinjection nozzle communicating with a mold cavity to form a multilayered article and an injection molding method are provided. The nozzle includes at least two flow channels communicating with an outlet, with each flow channel including at least one spiral groove that decreases in depth towards the outlet area to eliminate weld lines and dips in the resultant article.

Abstract: A fuel/air mixing arrangement for a combustion apparatus such as a gas turbine comprises a first swirler in which air and fuel are mixed to form a fuel/air mixture, a first conduit to supply a first proportion of the mixture to the combustion apparatus, a second swirler arranged to receive a second proportion of the mixture, and a second conduit to supply the second proportion from the second swirler to the combustion apparatus.

Abstract: A gas turbine fuel injection system of the lean direct injector type designed to reduce nitrous oxide (NOx) emissions is provided. The configuration includes a pilot fuel injector for injecting a pilot fuel stream, and a pilot swirler for providing a swirling pilot air stream to atomize and entrain the pilot fuel stream. A main airblast fuel injector is located concentrically about the pilot fuel injector, for injecting a main fuel stream concentrically about the pilot fuel stream. Inner and outer main swirlers provide a swirling main air stream to atomize and entrain the main fuel stream. An air splitter is located between the pilot swirler and the main swirler. The air splitter is so arranged and constructed as to divide the pilot air stream exiting the pilot swirler and the air splitter, from the main air stream exiting the inner main swirler, whereby a bifurcated recirculation zone is created.

Abstract: A two-fluid nozzle for atomizing a liquid by mixing the liquid and a gas at high speed, wherein desired particle size is obtained at a low pressure, and a device employing the same nozzle for freezing and drying a liquid containing a biological substance are disclosed. The two-fluid nozzle which is provided with a first injection hole for injecting the liquid and a second injection hole for injecting the gas, wherein the second injection hole is provided around the outer periphery of the first injection hole; a revolving means (108 or 118) is provided to at least the front portion of the first injection hole for rending the liquid into revolving flow; and a revolving means (117) is provided to at least the front portion of the second injection holes for rending the gas into revolving flow, is suitable for atomization of a liquid containing a biological substance because the atomization at a low pressure is possible through operation of the revolving means for rending the gas and liquid into revolving flows.

Abstract: The invention relates to a two-stage pressure atomizer nozzle with a nozzle body (30) having a mixing chamber (39) which is connected to an outside space via a nozzle outlet bore (33), and with a first feed duct (42) with a feed bore (41) for a liquid (37) to be atomized, through which feed bore said liquid (37) can be fed, free of swirling and under pressure, at least one further feed duct (36) for a portion of the liquid (37) to be atomized or for a second liquid (37') to be atomized opening into the chamber (39), through which feed duct said liquid (37, 37') can be fed under pressure and with swirling. The feed bore (41) of the first feed duct (42) lies on one axis (34) with the nozzle outlet bore (33). It is defined in that the outlet-side diameter (d.sub.a) of the nozzle outlet bore (33) is at most as large as the diameter (d.sub.z) of the feed bore (41) and the length (L) of the nozzle outlet bore (33) is at least twice to at most ten times the outlet-side diameter (d.sub.

Abstract: A low firing rate oxy-fuel burner which may be comprised of commercially available standard components and which includes an oxidant conduit and a fuel conduit within the oxidant conduit. The fuel conduit has a fuel nozzle at the forward end thereof with a fuel swirler in the form of a twist drill positioned therein which is maintained in a an aerodynamically centered position by the flowing fuel stream. The oxidant conduit has an oxidant nozzle at the forward end thereof with an oxidant swirler in the form of helical spring position therein and surrounding the fuel nozzle.

Abstract: A pressure atomizer nozzle comprises a nozzle body (30) in which is formed a turbulence and/or swirl chamber (39) and having a nozzle bore (33). At least one first feed channel (41, 41a) for the liquid (37) to be atomized connects to the chamber as a first feed stage for feeding said liquid (37) under pressure. At least one second feed channel (38) connects to the chamber as a second feed stage for feeding part of the liquid (37) to be atomized or for feeding a second liquid (37') to be atomized. The second feed channel feeds liquid into the chamber under pressure and with a swirl. The two stage pressure atomizer nozzle allows, for example, simple adaptation of the fuel spray cone angle to the respective operating conditions of a gas turbine burner.

Abstract: A centerbody for a tangential entry fuel nozzle includes a base having at least one air supply port extending therethrough, a radially outer surface including a frustum portion and a cylindrical portion, an internal passageway which communicates with an internal chamber through a swirler, and a fuel lance extending through the base, the internal chamber, and the swirler, and terminating within the second cylindrical passage.

Abstract: A low NOx burner comprising ducts for the primary (6), secondary (7) and tertiary air (14), arranged coaxially around its longitudinal axis, for supplying of the primary, secondary and tertiary air, respectively, to a combustion chamber (3), means for accumulation of the air (5), means to give vorticity to the primary, secondary and tertiary air (11, 15, 27) installed in the respective ducts, means for supply of fuel (23, 32, 43) arranged within said ducts to inject the fuel into said combustion chamber. The axial swirler for the secondary air (11) is formed by a plurality of blades each of which is made up of a stationary part (11a) and a mobile part (11b) connected to actuator means capable of moving it in an angular direction to give an air outlet angle of between 30.degree. and 60.degree.. The axial swirler for the tertiary air is conical in shape and has fixed blades. On the tertiary air duct a passage (16) is formed for supply of secondary and tertiary air.

Abstract: An air premixed natural gas burner having reduced thermal and prompt NO.sub.x emissions employs a central, cylindrical core chamber and an outer annular chamber separated by a hollow barrel having a plurality of gas spuds at a front end of the burner adjacent to a burner throat. The plurality of gas spuds introduces natural gas into a core chamber air flow passing through a fixed swirler and controlled by a sliding air flow damper associated with the central, cylindrical core chamber. A reduced air/fuel stoichiometric ratio (of approximately 0.6) is preferably maintained at an outlet of the central, cylindrical core chamber. The balance of the combustion air is provided through the outer annular chamber to maintain an overall or cumulative burner stoichiometric ratio of approximately 1.05.

Abstract: A tangential air entry fuel nozzle has a combustor inlet port to permit air and fuel to exit into a combustor. The port includes a convergent surface, a divergent surface, and a cylindrical surface extending therebetween. The convergent surface extends a first distance along the longitudinal axis of the nozzle, the cylindrical surface extends a second distance along the axis, and the second distance is at least 5% of the first distance.

Abstract: Current state-of-the art injection methodologies for bipropellant engines ly on either impingement or turbulence to mix the fuel and oxidizer streams. The multiple impinging stream vortex injector combines both mixing schemes into a single injector. Both first stage mixing at point of impingement and second stage mixing or turbulent vortex mixing is accomplished by impinging momentum balanced, tangentially injected propellant streams onto one another. The impingement angles are calculated to yield a resultant stream vector that consists of only a tangential velocity component. The two stages of mixing results in increased engine performance and combustion efficiency.