Abstract: An electrostatic nozzle assembly for coating row crops and other plants with electrostatically charged particles of pesticide including a nozzle body formed with passageways to receive air and a grounded stream of waterborne pesticide for delivery through a nozzle tip to an inductor ring mounted between the nozzle body and an air nozzle having a discharge orifice. As the stream of waterborne pesticide is projected from the nozzle tip, it is impacted with a swirling, spirally moving stream of air produced by a swirl plate having a plurality of tapered air channels oriented tangentially relative to the pesticide stream and communicating with the air passageway in the nozzle body. The inductor ring inductively charges the pesticide in the terminal end of the nozzle tip.

Abstract: A liquid fuel burner head features an axially movable primary air assembly carrying a centrally disposed nozzle spraying fuel radially of the burner head. Primary air ports surround the nozzle and include means for progressively increasing swirl of the primary air as radial distance from the nozzle increases and for adjusting the location of flame origin. Metering of secondary air and adjustment of its direction of swirl are both accomplished rearward of the secondary air outlet, the primary air assembly moving rearwardly to increase the secondary air as firing rate rises. A simple metal, frusto-conical flame holder is secured to and spaced forwardly of the burner head.

Abstract: A combination apparatus having a swirl chamber for mixing primary air and atomized fuel in a primary helical flame vortex and a splitting chamber downstream of the swirl chamber for shearing off secondary helical flame vertexes from the primary vortex rotatably meshed with the prime vortex. Cutting blades positioned in the splitting chamber slice outer portions of the helical primary vortex into channels formed between the blades. The blades are longitudinally disposed perpendicular to the movement of the primary flame vortex and are tilted toward the primary flame vortex at an increasing angle relative to the longitudinal axis between the upstream and downstream portions of the splitting chamber. An intermediate stabilizing chamber can be positioned between the upstream swirl chamber and the downstream splitting chamber.

Abstract: Disclosed is a burner register assembly having an air register assembly for imparting a controlled vortex swirl to secondary combustion air of a furnace in order to entrain the fuel and primary air of the furnace and carry them into the furnace interior. The assembly may comprise a series of arcuate vanes circumferentially spaced about the fuel and primary air nozzle, the vanes being designed to induce both turbulence and a well defined vortex to the secondary air flow. A separate air valve, such as a butterfly valve, is provided upstream of the air register assembly to regulate the volume of secondary air flow. Shadow vanes may also be provided in the vicinity of the air register assembly outlet, and positioned adjacent the furnace walls in order to protect the air register assembly from furnace heat, particularly when the burner associated with the air register assembly is idle and the secondary air flow is lowered.

Abstract: A pressure atomizing fuel nozzle assembly for a gas turbine engine includes a support housing in which a pressure-responsive fuel check valve and metering valve are disposed in line to provide a flow of primary fuel for engine start-up and low power operation and secondary fuel for higher power operation. The check valve is located upstream between the fuel inlet and a sleeve inside of which the metering valve is disposed. The check valve prevents the fuel manifold from draining after engine shut-down and controls fuel entry to both the secondary fuel chamber within the sleeve and to an annular primary fuel chamber between the sleeve and support housing connected in fuel flow relation to the secondary chamber by a fuel filter. The primary fuel flows through the primary chamber around the exterior of the secondary chamber and through an annular primary fuel conduit disposed around the secondary fuel conduit in the housing strut to the nozzle attached to the strut.

Abstract: A versatile mixing nozzle for dispensing polyphase fuels into a combustion zone of a boiler. The nozzle is characterized by a plurality of mixing chambers, a relatively low pressure-drop spray nozzle design and a stationary dispersing disk and radiation-protective shield partially projecting in front of the nozzle outlet ports.

Abstract: In a combustion apparatus having an ignition means, a plurality of first swirl vanes positioned at the upstream end of a flame retention head creates a helical primary air/fuel mixture in the combustion chamber of the retention head that ignites into a primary flame vortex. A second plurality of vanes mounted on the inner walls of the retention head shears the outer portions of the primary flame vortex into a plurality of secondary helical flame vortexes disposed about the perimeter of the primary flame vortex. The secondary flame vortexes are opposite in rotational orientation to the direction of rotation of the primary flame vortex. Secondary air is injected into the combustion chamber at the area of shearing.

Abstract: A gas turbine engine fuel burner comprises a convergent/divergent flow passage which receives a flow of swirling fuel and air upstream of the passage throat. The fuel and air mixture passes through the throat and is entrained into a further mass of swirling air which enters the passage through air swirlers in the wall of the divergent portion of the passage.The invention is intended to promote good fuel and air mixing, fine atomization and a reduction in carbon deposition on the burner.

Abstract: A snow gun for making artificial snow by atomizing a mixture of air and water is disclosed. The snow gun comprises a hollow body, a compressed air supply conduit terminated by an injection nozzle accommodated inside the hollow body and opening at an end into the hollow body. A pressurized water supply conduit opens into a space between the hollow body and the air supply conduit. A mixing chamber for mixing air and water communicates through an inlet port with the interior of the hollow body, the inlet port facing the discharge nozzle of the injection nozzle. The injection nozzle is displaceable longitudinally relative to the inlet port of the mixing chamber for adjusting the water flow passage to the mixing chamber. A needle valve adjusts the cross-sectional area of discharge orifice of the air injection nozzle. The mixing chamber comprises the bore of a main nozzle extending in the continuation of the injection nozzle.

Abstract: A partial combustion process for a particulate solid fuel and a burner for carrying out such a process is disclosed wherein the particulate fuel is injected into a premix chamber along with primary gas streams to support combustion and secondary gas streams to form a shroud of gas around the fuel as the mixture of fuel and gas leaves the pre-mix zone through a converging-diverging nozzle to enter the combustion zone.

Abstract: Liquid is sprayed from a nozzle by subjecting it to a vortex air flow which breaks it into particles of about five to twenty microns, and, while the liquid particles are entrained in the liquid flow they pass by a needle shaped charging electrode extending into the flow transversely of the vortex flow axis. This imposes a high electrostatic charge on the particles to improve their spray characteristics.

Abstract: A process and apparatus for use in atomizing a combustible material into a form for improved combustion comprising (i) an atomization zone, (ii) an ante-chamber connecting with the atomization zone, (iii) at least two feed inlets to the ante-chamber at least one being for said combustible material and at least one other for an auxiliry atomizing gas, and (iv) means (e.g. a mixing vane) at or in the immediate vicinity of the exit of the atomization zone for modifying the profile of atomized material exiting from the zone; and in which apparatus the atomization zone is of generally cylindrical cross-section and is provided internally with means which are adapted to impart to the streams of the combustible material and atomizing gas passing therethrough multiple shearing action and changes of rotational direction. Substantially no atomization of the fuel by the auxiliary gas occurs prior to entry into the atomization zone.

Abstract: A substance in a particulate form, e.g. a polyacrylamide flocculant powder, is rapidly dissolved in a liquid, e.g. water by feeding the powder down a circular bore in a casing while the water is fed tangentially and swirled in two chambers in the casing and around the circular bore to emerge in the bore, as oppositely swirling, inwardly converging streams in the path of the powder. The diverging portion of the first stream intersects the converging portion of the second stream, which goes out of the bore with the powder dissolved therein.

Abstract: A forced draft burner unit comprises: a flame chamber, a conduit for conducting fuel to the flame chamber, a blast tube for conducting air from an air opening adjacent a first end of the blast tube to a second end of the blast tube adjacent the flame chamber; and a fan for supplying pressurized air to the air opening so the pressurized air enters the air opening generally tangential to the blast tube and passes along the blast tube to the second end in vortical flow; and vanes for mixing the fuel and air in the flame chamber.

Abstract: An apparatus and process for the atomization of a combustible material comprises feeding at least one stream of the combustible material and at least one stream of an auxiliary gas, under pressure, through an elongated zone in which atomization of the combustible material is achieved by expansion of the auxiliary gas while causing the said streams frequently to split into partial streams, recombine, and changing their rotational flow pattern throughout substantially the whole length of the zone; and adjusting the feed of the said auxiliary gas and combustible material into the atomization zone such that the atomized product from the zone is one in which the auxiliary gas occupies an appreciably greater volume than that occupied by the combustible material. At the zone outlet is provided a nozzle for constraining the atomized combustible material in a desired predetermined profile. There is substantially no atomization of the fuel by the auxiliary gas prior to entry into the atomization zone.

Abstract: A blue flame oil burner is provided wherein an oil atomizing nozzle produces sprayed oil droplets as a symetrical hollow cone having an included angle for the outside edge of the oil spray, when the oil is sprayed in still air, in the range 60.degree. to 80.degree., an air swirler with an air pre-swirler both have blades with a helix angle in the range 50.degree. to 65.degree., with the blades of the air swirler adjacent the spraying end of the atomizing nozzle inclined in the direction of the hollow cone at an angle in the range 20.degree. to 55.degree., and a supply tube for delivering air through the air pre-swirler to the air swirler. The air flows along the supply tube and is preswirled in the pre-swirler and then finally swirled in the air swirler so that sprayed oil droplets in the hollow cone are carried by the swirling air, which diffuses with them in such a manner that the oil droplets are evaporated prior to combustion and:I.

Abstract: A fuel injection nozzle for gas turbines in which atomization of the liquid fuel is accomplished by high-velocity air entering the combustion chamber, characterized by minimizing the surface area of metal in contact with the fuel during the atomization process and further characterized by designing the air passages such that a swirling motion is imparted to the air followed by an acceleration of the air stream to eliminate variations in air velocity and to maximize air velocity at the point of impact with the fuel.