Abstract:
Liquid nebulizer apparatus, systems, and formulation compositions, as well as systems for the nebulized, aerosol delivery of such compositions, for the administration and insufflation of medicinal aerosols into the pulmonary system of a mammal are described. The nebulizing apparatus and system can effectively aerosolize a variety of viscosities of medicinal liquid drug carriers, including those made up of oil, water, or emulsions of oil and water. Drugs dissolved or suspended in the compositions and formulations described and adapted for use herein are not damages or denatured by the nebulization process when the nebulizer described is used. Further, the nebulization system itself can be adapted for use with both mechanically assisted pulmonary ventilation systems as well as hand-held inhalers and nose/mouth face masks for use in pulmonary drug delivery.
Abstract:
A spray nozzle assembly is provided. The spray nozzle assembly includes a nozzle body having a liquid passage that terminates in a nozzle body orifice. The spray nozzle assembly includes an impingement element having an impingement surface spaced from the nozzle body orifice. One or more air outlet orifices are disposed upstream of the impingement surface and oriented to discharge a substantially tubular curtain of air around the nozzle body orifice. An air cap defines a chamber extending around and downstream of the impingement surface. The air cap has a plurality of discharge orifices. At least one of the discharge orifices in the air cap has an associated nipple that is integrally connected to the air cap and extends the discharge orifice outwardly away from an outer face of the air cap.
Abstract:
An internal mix spray nozzle assembly adapted for operation with lesser pressurized air requirements. The spray nozzle assembly includes a liquid passage for directing a liquid flow stream against an impingement pin, and an air guide is provided for forming an annular pressurized air passage about the liquid flow stream for striking and atomizing a laterally spreading dispersion of liquid from the impingement surface. For enhancing liquid atomization, the air guide defines a relatively narrow width air flow opening for substantially accelerating and increasing the pressure of the atomizing air stream, and the impingement pin is formed with a relatively large primary impinging surface and a parallel downstream secondary impingement surface that facilitates further liquid particle breakdown and prevents the accumulation of liquids about the bottom of the impingement pin.
Abstract:
Die Erfindung bezieht sich auf ein modular aufgebautes Düsensystem mit dessen Hilfe Tropfen aus Flüssigkeiten unterschiedlicher Viskosität erzeugt werden können. Kernstück: der Erfindung sind Mehrfachanordnungen von Einzeldüsen ohne bewegte Teile, die untereinander in Verbindung stehen und Einzelmodule bilden. Dieser Aufbau ermöglicht ein einfaches Erweitern und Anpassen des Systems wodurch eine maximale Flexibilität gewährleistet wird.
Abstract:
A nozzle for atomizing and spraying liquid is provided. The nozzle includes a longitudinal liquid flow passageway (12) that terminates in a liquid orifice for directing a stream of liquid along a predetermined axis. A plurality of intersecting, transverse passageways (15) extend perpendicular to and intersect the predetermined axis. Each of the transverse passageways terminates at either end in an outlet. The transverse passageways (15) define a first impingement surface downstream of the liquid orifice for breaking up a stream of liquid impinging thereon into a laterally spreading dispersion which disperses through the transverse passageways. An air annulus (24) is arranged in surrounding relation to the outlets of the transverse passageways and oriented to discharge air in a downstream direction so as to strike the fluid dispersed through the outlets of the transverse passageways (15). An expansion chamber (29) is arranged downstream of the transverse passageways and air annulus. The expansion chamber communicates with a nozzle discharge orifice (30).
Abstract:
A fire-suppression apparatus that includes a pneumoacoustic atomizer for delivering a mist of liquid (e.g., water) in the form of droplets having a size in the range of about 50 to 90 microns. The mist is suspended in a fire-suppressing gas such as nitrogen. Gas is supplied to the pneumoacoustic atomizer from a system that, in some embodiments, includes both bottles and a gas generator. To minimize consumption of fire-suppressing materials, the fire-suppression apparatus can be operated in a pulsed mode wherein delivery of fire-suppressing materials is interrupted unless a sensor detects a fire re-flash. In some variations, the pneumoacoustic atomizer operates at very low pressures, as is desirable for use in aircraft.
Abstract:
The invention relates to a device for producing a rapidly solidifying mixture from several liquid components and subsequently atomizing the solidifying mixture. The device comprises a mixing chamber (4), a liquid distributor (1', 7) and N equal drop-forming nozzles (9a, 9b) which are connected to the liquid distributor. The liquids to be mixed can be fed to the mixing chamber separately and the mixing chamber presents neither significant back-mixing in those areas in which reactions can occur nor significant dead spaces in the flow in these areas. The liquid distributor (1', 7) is connected to the mixing chamber and immediately distributes the mixture flow coming from the mixing chamber to the nozzles (9a, 9b) without significant back-mixing or dead spaces in said flow, so that the flow properties of the partial flows and their dwell times in the liquid distributor are the same for each such partial flow.
Abstract:
The invention relates to a perforated disk characterized in that a complete passage for fluid is constructed. Said passage comprises an inlet opening (40), outlet openings (42) and at least one channel (cavity) (41) situated between the inlet and outlet openings. At least three functional surfaces (45, 46, 47) of the perforated disk (23) with one respective characteristic opening structure (40, 41, 42, 43) are constructed on top of one another by means of galvanic metal precipitation (multi-layer galvanization) so that the perforated disk (23) is available in one piece. In the lower functional surface (45), gas delivery openings (43) are configured through which gas can be delivered in the direction of the fluid which is to be injected, so that the fluid can be finely sprayed. Said outlet openings (42) are part of the gas delivery openings (43). The perforated disk (23) is especially suitable for the use in injection valves for mixture compressed, externally supplied ignition internal combustion engines.
Abstract:
A spraying arrangement has a nozzle (1), a spraying gas supply means (11) and a liquid supply means (13) to the nozzle (1) in which the spraying gas and the liquid may be mixed before leaving the nozzle. In addition, a body (3) is centrally arranged in the axis of the nozzle (1), narrowing the cross section of the nozzle (1) in the area of the nozzle neck (15) to a ring-shaped space. The points (4) of the teeth of an element shaped as a hollow cone and having a saw-toothed end lie on the outer wall of the spreading body (3). The outer wall of the crown (2) lies on the inner wall of the nozzle neck (15), creating an inner ring-shaped space through which liquid is supplied between the spreading body (3) and the crown (2), as well as an outer ring-shaped space through which the spraying gas is supplied between the spreading body (3) and the inner wall of the nozzle (1). This low-priced, technically simple modification allows the liquid and spraying gas to be intensively mixed even at a low spraying gas pressure. A quasi-stoichiometric combustion with a reduced nitrogen oxide emission is achieved without causing the flames to touch the walls of the furnace.