Abstract:
Disclosed herein is a nebulizer capable of performing spraying over a wide flow-rate range from a low flow rate to a high flow rate stably and with high efficiency. Further, the present invention provides a supersonic nebulizer capable of improving the efficiency of spraying by a supersonic region spray gas, and a supersonic array nebulizer wherein a plurality of spray units are placed in array form.
Abstract:
A snowmaker is comprised of a head which has an outer ring of nozzles which form a flow of primary water into droplets which move downstream preferably along paths running at a slight radially outward angle, together with a central nucleator which discharges frozen nuclei particles outwardly from a plurality of atomizers at the downstream end cap end of the nucleator. The nucleator is readily disconnectable from the ring. Secondary water flow is fed to the nucleator so it swirls at high velocity within, to greatly enhance the warming effect of the water on the nucleator parts, and to thereby inhibit accumulation of exterior ice. The secondary water is mixed with compressed air as they both enter the atomizers of the end cap. A resultant flow of nuclei from the atomizers is discharged so the flow merges with the plume of primary water droplets from the nozzle. Preferably, flat spray nozzles are used. The lengths of the oblong cross sections of spray pattern are oriented so they lie along the radii of the head; and, the atomizers are oriented so they intersperse nuclei between the spaced apart spray patterns. Desirable air/water ratios of up to 170:1 are obtained by the nucleator. The head mounts on a portable tower and effectively projects snow without fan augmentation.
Abstract:
A method and apparatus for droplet generation in agricultural or other spraying comprises supplying air and liquid to a supply chamber having an outlet opening, and entraining the liquid in the air flow for droplet formation. Air and liquid are injected into the supply chamber which has a closed end target wall toward which the liquid is directed in the form of a jet and from which the liquid moves outwards towards the outlet opening for droplet formation. The supply of air and liquid at suitable pressures to the chamber and so that the liquid proceeds with direction change to the outlet causes the droplets formed to have a size particularly suitable for effective coating of plant material, and the momentum provided to the droplets by the air enables controlled direction of the resulting spray mist even at very low liquid volumes per hectare.
Abstract:
Methods and apparatus particularly useful for atomizing a heavy highly viscous liquid into fine droplets (such as petroleum distillate resid to droplets on the order of 100 thousandths of a millimeter), with the aid of at least one auxiliary gas. This employs in a nozzle head an array of a plurality of primary channels and at least two secondary channels associated with each said primary channel. The primary channels each have an inlet end connected to a high pressure source of liquid, and have an outlet end defining an atomization orifice. The secondary channels each have an inlet end being connected to at least one source of auxiliary gas and an outlet end. The outlets of the secondary channels each intersect with a commonly associated primary channel at the same or different locations upstream of the respective atomization orifice at angles of less than 90.degree., typically 45.degree. or less. Liquid is passed through a plurality of primary channels thereby forming a liquid core stream. At least one auxiliary gas is injected under pressure into each respective primary channel from at least two secondary channels associated with each primary channel, thereby atomizing the liquid.
Abstract:
A dual fluid spray nozzle adapted to produce a finely atomized spray of a liquid includes a body which encloses a first atomization chamber, a nozzle tip, and a plate disposed between the first atomization chamber and the nozzle tip so as define a second atomization chamber. The plate defines a plurality of passages through which liquid passes from the first atomization chamber into the second atomization chamber and is further atomized. The nozzle may include a plurality of plates and more than two atomization chambers. In such embodiments, each plate has a reduced total cross-sectional area of passages relative to the preceding plate.
Abstract:
In an exhaust gas cleaning apparatus comprising a tower of substantial volume, means for introducing exhaust gas including acid material to be removed into said tower, means for introducing liquid including alkali material into said tower so that the alkali material reacts with said acid material to produce solid particles, and means for removing the solid particles from the exhaust gas, spray means is provided for spraying liquid in such a manner that the atomized particles of said liquid are moved in said tower without interfering with each other.
Abstract:
A fluid dispenser head including a spray wall (1) that defines a central axis (X) and that is perforated with holes (O1, O2) through which the fluid under pressure passes so as to form jets of fluid, the holes (O1, O2) extend along axes (Y1, Y2) that correspond to the path of the jets of fluid;
the dispenser head being characterized in that at least some of the axes (Y1, Y2) intersect, such that the jets of fluid that extend along the intersecting axes (Y1, Y2) meet at at least one collision point (P).
Abstract:
A spray head assembly that includes a body configured to receive water; and a plurality of nozzles on or in the body, wherein the plurality of nozzles is configured to receive and discharge the water in a plurality of nonintersecting streams that together form a spray pattern having either a dotted “S” shape or a dotted “8” shape at a focal distance from the body.