Abstract: Problem: To provide a spout apparatus in which sagging of the mesh structure portion in the flow-conditioning member due to water pressure can be suppressed even if the flow-conditioning member is formed by a fine diameter mesh structure, and the flow-conditioning member can be compactly constituted and flow velocity distribution made uniform. Solution Means: The embodiment of the invention is a spout apparatus 2, including a spout apparatus main unit 6, a flow-conditioning member 12, and a spray member 16; wherein the flow-conditioning member 12 is formed by a mesh structure in which numerous fine holes are formed, and the mesh structure is layered and formed three dimensionally, such that the mesh structure portion of at least a portion of the mesh structure extends in a direction parallel to the direction of water flowing into the flow-conditioning member.

Abstract: Described herein is dosage of foam including from about 5 cm3 to about 70 cm3 of the foam. The foam includes from about 0.5 g to about 4 g of a detersive surfactant; from about 0.001 g to about 4 g propellant; a foam density of from about 0.02 g/cm3 to about 0.25 g/cm3; and a bubble size distribution having an R32 of from about 5 ?m to about 150 ?m.

Abstract: Described herein is a dosage of foam including from about 5 cm3 to about 70 cm3 of the foam. The foam includes from about 0.5 g to about 4 g of a detersive surfactant; from about 0.001 g to about 4 g propellant, a foam density of from about 0.05 g/cm3 to about 0.35 g/cm3; a bubble size distribution including an R32 of from about 5 ?m to about 100 ?m; and a gloss unit measurement of from about 4 to about 40 GU. The propellant is selected from 1,3,3,3-tetrafluoroprop-1-ene, 1,1 difluoroethane, and mixtures thereof.

Abstract: Described herein is a dosage of foam including from about 5 cm3 to about 70 cm3 of the foam. The foam includes from about 0.5 g to about 4 g of a detersive surfactant; from about 0.001 g to about 4 g propellant; a foam density of from about 0.05 g/cm3 to about 0.35 g/cm3; a bubble size distribution including an R32 of from about 5 ?m to about 100 ?m; and a gloss unit measurement of from about 0.1 GU to about 3 GU. The propellant is selected from propane, isobutane, n-butane, butane, isopentane, pentane, and mixtures thereof.

Abstract: Described herein is a dosage of foam including from about 5 cm3 to about 70 cm3 of the foam. The foam includes from about 0.5 g to about 4 g of a detersive surfactant; from about 0.001 g to about 4 g propellant; a foam density of from about 0.10 g/cm3 to about 0.35 g/cm3; a bubble size distribution having an R32 of from about 5 ?m to about 100 ?m; and a yield point of from about 5 Pa to about 100 Pa.

Abstract: A foamer dispenser including a mesh filter that is disposed in a mixture flow path of a jet ring to allow a mixture to pass is provided. A connecting flow path area between a liquid flow path and the mixture flow path and a connecting flow path area between an ambient air flow path and the mixture flow path have the relation 2.8?S1/S2?3.8, and/or, a smallest flow path area of the mixture flow path is located on an immediately upstream side of the mesh filter, and the smallest flow path area and a flow path area of the mesh filter have the relation 4?S4/S3?10.3.

Abstract: An in-situ foam generation apparatus includes a dissolution chamber that houses a polymer stick cavity or canister, a mixing chamber that houses a static mixer, and a foaming chamber that houses a mechanical agitator in fluid communication with a compressed air inlet. The chambers are in fluid communication with one another by way of a respective chamber inlet and outlet, with the mixing chamber being located between the dissolution and foaming chambers. A pressure regulator can be used to control the incoming aqueous solution pressure to the dissolution chamber. A nozzle exhaust is in fluid communication with the outlet of the foaming chamber. One or more polymer sticks that include one or more cleaning agent can be loaded into the cavity or canister of the dissolution chamber. An end consistency of the polymer stick can be in a range of partially solidified to fully solidified.

Abstract: An exemplary foam dispenser system includes a housing, a container, a motor, an air pump, a foam pump, a first mixing chamber, a second mixing chamber, a foam cartridge, and an outlet for dispensing foam. The container holds a foamable liquid. The foam pump has a liquid pump portion that pumps liquid, and an air pump portion that pumps air. The first mixing chamber is located downstream of the liquid pump portion and the air pump portion, and the liquid and the air mix in the first mixing chamber to create a first foam mixture. The second mixing chamber is located downstream of the first mixing chamber and the air pump, and the first mixture and air from the air pump mix in the second mixing chamber to create a second foam mixture. The second foam mixture travels through the foam cartridge and exits the outlet as rich foam.

Abstract: An in-situ foam generation apparatus includes a dissolution chamber that houses a polymer stick cavity or canister, a mixing chamber that houses a static mixer, and a foaming chamber that houses a mechanical agitator in fluid communication with a compressed air inlet. The chambers are in fluid communication with one another by way of a respective chamber inlet and outlet, with the mixing chamber being located between the dissolution and foaming chambers. A pressure regulator can be used to control the incoming aqueous solution pressure to the dissolution chamber. A nozzle exhaust is in fluid communication with the outlet of the foaming chamber. One or more polymer sticks that include one or more cleaning agent can be loaded into the cavity or canister of the dissolution chamber. An end consistency of the polymer stick can be in a range of partially solidified to fully solidified.

Abstract: The embodiment relates to beverage dispensing, and more particularly to the dispensing of a carbonated beverage, from any container into a vessel, providing a portion of the beverage as foam atop the dispensed beverage. To avoid the reduction of absorbed carbon dioxide in a carbonated beverage, increased atmospheric pressure is employed to move the beverage from the container through the apparatus and into the vessel. An oscillating means provides a sonic wave through the conduit and the liquid therein; the sonic wave initiates the reaction between the carbon dioxide and the ingredients in the beverage to cause the liquid to foam prior to dispensing into the vessel. Iterations include an adaptable apparatus for a beer tap and a means for passing the liquid to be dispensed through a permeable container filled with soluble material or a permeable container filled with a filtration means.

Abstract: A foam forming aerosol product including a double structure container having a propellant filling space, two liquid concentrate filling spaces, and a discharging mechanism for simultaneously discharging contents filled in the two liquid concentrate filling spaces. The propellant filling space is filled with a propellant containing a compressed gas. A first liquid concentrate filling space is filled with a first liquid concentrate composition containing 0.5 to 15.0% by mass of an organic acid, and a second liquid concentrate filling space is filled with a second liquid concentrate composition containing 0.5 to 15.0% by mass of a hydrogen carbonate. The first liquid concentrate composition discharged from the first liquid concentrate filling space and the second liquid concentrate composition discharged from the second liquid concentrate filling space are mixed to form a foam. The foam forming aerosol product can be safely used, has an excellent storage stability and is capable of readily forming a foam.

Abstract: The present invention relates to an adaptation device arranged to transform a pump not specific to the production of foam into a foam pump. The device comprises a supply conduit extending from the inlet of the pump as far as an elbow below the level of foaming liquid and rising above the level of the liquid to terminate in air added to the structure of a pump for fluids. The supply conduit comprises a suction hole enabling suction of liquid when air circulates before the hole. A filtering grate is added to a discharge conduit and connected to the pumping outlet. The foaming liquid comprises, in part, water to produce foam without additional water.

Abstract: It is an object of the present invention to provide a foam dispensing container that can homogenize foam quality and can discharge foam of stable quality. By providing a plurality of liquid intake paths for delivering the foaming liquid into the air-liquid mixing chamber and a plurality of air intake paths for delivering air, the air-liquid mixing efficiency can be improved significantly, stable volumes of air and foaming liquid can be delivered into the air-liquid mixing chamber, without the possibility of delivering a great volume of liquid with a single press, and consequently the foam quality can be homogenized and foam of stable quality can be discharged.

Abstract: Foam dispensers, refill units for foam dispensers, and liquid pumps for use in foam dispensers are disclosed herein. In one embodiment, an inverted foam pump includes a compression chamber having an inlet valve and an outlet valve. The compression chamber is in fluid communication with a flow restrictor, an atomizer, a mixing chamber, a foaming chip and an outlet. The inlet valve, outlet valve, flow restrictor, atomizer, mixing chamber, foaming chip and outlet extend along a common axis. An air inlet is included that extends into the mixing chamber; the air inlet is an opening to atmospheric pressure. During operation, the liquid pump is located below the liquid container and liquid flowing from the compression chamber is accelerated and atomized. The atomized liquid enters the mixing chamber at a velocity sufficient to draw in air from the air inlet to mix with the liquid to form a foam.

Abstract: An injector for injecting a flat fan of liquid includes an injector body defining a pair of air channels, with each air channel fluidly connected to a respective air inlet. The air channels join one another at a common throat defined in the injector body and are separated by a land defined in the injector body extending from the air inlets to a point proximate the throat. The air channels and a liquid inlet are in proximity to draw liquid out of the liquid inlet into the throat with air flowing through the air channels. A diverging diffuser is provided in fluid communication with the throat. The diffuser includes an impingement surface defined in the injector body opposed to the liquid inlet. The liquid inlet is configured to inject liquid against the impingement surface to form a fan of liquid diverging outward through the diffuser.

Abstract: A nozzle assembly for encapsulating a gaseous solution in bubbles comprises a discharge tube having a diffuser and a foam solution spray nozzle mounted therein. The discharge tube has upstream and downstream ends. The discharge tube has a front face at the upstream end with a first opening configured to be joined to a gas supply line that provides a gaseous solution and a second opening configured to receive a non-expanded foam solution. The downstream end of the discharge tube is open. A chamber is formed within the discharge tube to receive the gaseous solution at the upstream end and release the gaseous solution through the diffuser into the discharge tube towards the downstream end.

Abstract: A device enables fluid pumps not specific to producing foam to be modified to be foam pumps by adding several elements to the pumps. The added elements include a supply conduit extending from an inlet of the pump to an elbow below the level of foaming liquid and hence rising above the level of the liquid to terminate in air. The supply conduit has a suction hole through which the liquid is sucked when air circulates in front of the hole. A foam discharge conduit connected to the pump outlet has a filtering grate. The foaming liquid includes water to produce foam without additional water. Additional grates and a removable extension grate are added optionally. Dimensions of the elements and dilution level of the foaming liquid are a function of the nature of the foam.

Abstract: A foam spray head assembly includes a head, a first piston unit, a valve unit, a link, a second piston unit, a cylinder, a resilient member and a resilient valve. The valve unit is directly connected to the head to allow the valve unit to receive the pressing force of the head to quickly respond in the form of reciprocating motion. The parts made of metal such as the spring is isolated from the liquid to ensure that the liquid is not affected by the metal.

Abstract: An aerosol actuator and manifold for dispersing an aerosol product wherein the manifold includes one or more air vents to promote the foaming of an aerosol product dispersed from the aerosol actuator. In some embodiments, the one or more air vents may be positioned downstream of an orifice cup mounted on the orifice of the manifold.

Abstract: A nozzle assembly for encapsulating a gaseous solution in bubbles comprises a discharge tube having a diffuser and a foam solution spray nozzle mounted therein. The discharge tube has upstream and downstream ends. The discharge tube has a front face at the upstream end with a first opening configured to be joined to a gas supply line that provides a gaseous solution and a second opening configured to receive a non-expanded foam solution. The downstream end of the discharge tube is open. A chamber is formed within the discharge tube to receive the gaseous solution at the upstream end and release the gaseous solution through the diffuser into the discharge tube towards the downstream end.

Abstract: An antomizing foam pump creates atomized droplets of a foamable liquid in air in a compression chamber. The compression chamber is then collapsed to force the droplets and air through a mesh screen to create a foam product.

Abstract: A nanoparticle aerosol generator, comprised of a vibrating fluidized bed with a baffle, a vibrating Venturi disperser and a cyclone separator. To generate nanoparticle aerosols, the nanoparticle aerosol generator uses the multiple impaction, vibrating air flow and vibrating high speed air flow to break up larger agglomerates, and multiple dilution to minimize the re-agglomeration of the particles.

Abstract: One aspect of the invention is a foaming component for use in association with a foam dispenser. The foaming component includes an air sparging element, a mixing chamber, and an air chamber. The mixing chamber is on one side of the air sparging element and it defines a portion of the mixing chamber. The air chamber is on the other side of the air sparging element and it defines a portion of the air chamber. The air chamber has an air inlet. The mixing chamber has a liquid inlet and an outlet, and the outlet is down stream of the inlet. The foaming component also forms part of a new foam dispenser. The foaming component and the foam dispenser are for use in the production of foam with a plurality of particles suspended therein. Another aspect of the invention is a dispenser with a foaming component therein.

Abstract: A foam pump including a pump housing with a liquid chamber in fluid communication with a foamable liquid filled container and an air chamber in fluid communication with a high pressure air source through an air inlet. The foam pump also includes a dispensing tube having a wiper seal post with a closed distal end positioned within the pump housing, and an outlet tube with an open distal end positioned outside the pump housing. The wiper seal post includes at least one inlet hole in fluid communication with the liquid chamber, and a check valve near the second open end. The foam pump further includes at least one foam screen in the open end of the outlet tube, a wiper seal slidably positioned around the wiper seal post and in sealing contact with the pump housing and the wiper seal post, and a spring bias to bias the wiper seal in an unactuated position.

Abstract: An ozone generator for providing ozone enriched air that comprises a body for defining a chamber for air flow therethrough and an ultraviolet lamp disposed in said chamber for irradiating the air passing through said chamber to convert oxygen molecules to ozone molecules. The device further comprises an air inlet for introducing air and a diffuser for diffusing the introduced air about said lamp. The diffuser has an annular flange with a plurality of apertures therein, said annular flange extending inwardly from a cylindrical portion encircling the annular flange, the cylindrical portion abutting and extending from the annular wall. The device further comprises an air outlet for discharging ozone enriched air.

Abstract: The present invention provides a foam nozzle for assembly onto a trigger-type sprayer. The foam nozzle includes a base plate, containing front and rear faces, a plurality of pins, arranged at intervals, a straight tube, protruding vertically from the front face of the base plate, an orifice defined within the straight tube, and a mesh body, arranged on the nozzle orifice of the straight tube. The mesh body includes a circular rib and a plurality of radial ribs. A convex rib protruding from the interior of the circular rib is contained within the radial ribs. A central orifice is formed between the convex ribs, while a plurality of annular orifices is formed between the circular rib and the radial ribs. The foam nozzle can be assembled into a plurality of grooves for the nozzle of existing trigger-type sprayer to generate foaming spray.

Abstract: A dispenser (1) for dispensing a mixture of two or more fluids, e.g. liquid (9) and gas (4) (e.g. air) as a foam and/or mist, the dispenser comprising a flexible container (6) for a liquid including a conduit (8) having first and second end portions (11,12) the first end portion (11) terminating in an opening in the container (6) through which the mixture is expelled from the container (6) and the second open end portion (12) being close to the base of said container, wherein the conduit (8) includes a third open end portion (13) which is located close to the top (16) of the container and laterally inclined or opposed to the second open end portion (12) and the dispenser further being provided with one or more three-dimensional turbulence elements (26) mounted in the flow path of the liquid before it leaves the dispensing opening.

Abstract: An antomizing foam pump creates atomized droplets of a foamable liquid in air in a compression chamber. The compression chamber is then collapsed to force the droplets and air through a mesh screen to create a foam product.

Abstract: A nozzle comprising a thin, flexible substantially planar polymeric film having a plurality of pores with structures allowing for generation of an aerosol at reduced extrusion pressure is disclosed. The pores can comprise at least two sections, or steps, in which the thickness of the membrane is reduced in stepwise fashion, or the pores can be tapered. Nozzles formed comprising pores having such structures permit aerosol generation at lower extrusion pressures, thereby allowing for decreased weight of aerosolization devices, increased efficiency, increased portability and increased battery life. The pore structures also allow for the use of thicker, more easily processed polymeric films in manufacturing while having a thinner, more efficient aerosolization area. The use of decreased extrusion pressures also results in increased uniformity in aerosol generation and improved reliability of other components.

Abstract: The invention relates to a mixing chamber for producing compressed air foam in fire extinguishing devices. The mixing chamber has a compressed air inlet, an extinguishing agent inlet and a compressed air foam outlet. The contour of the mixing chamber tapers towards the compressed air foam outlet. The invention also includes a fire extinguishing device. The fire extinguishing device includes an extinguishing agent container, a connecting device for connecting a source of compressed air to a mixing chamber of the kind described above.

Abstract: A dispenser for a flowable product such as liquid soap is arranged to receive a can containing the liquid soap as well as two different propellants. Gaseous nitrogen under pressure acts as a primary propellant, while propane and/or butane in a liquid phase acts to foam the soap when it is released from the can. An electronically controlled valve is actuated when a sensor detects the presence of a user's hand adjacent an outlet, and a predetermined quantity of foamed soap is then dispensed.

Abstract: A nozzle has a front, a back, and at least one flat surface extending therebetween. A door is coupled to the intersection of the front and flat surface by a live hinge. Optionally, the door has a portal within which a screen is mounted. The exterior surface of the door is provided with one or more curved hooks and the flat surface is provided with corresponding number of mating slots with which the hook(s) engage(s). Preferably, the interior of the door is provided with one or more curved hooks and a corresponding number of mating slots are provided on the front of the nozzle on an edge opposite the live hinge. Preferably, the door is provided with a tab which extends outward beyond the periphery of the nozzle on the edge of the door opposite the live hinge.

Abstract: A dual sprayer has an externally mounted mixing manifold for intimately commingling disparate liquids sprayed during pumping and issuing through a nozzle as a complete admixture of dual liquids.

Abstract: Systems and methods for high volume, low pressure foam generation are provided that have a wide range of applications, particularly in fire fighting and fire prevention fields. The foam may be effectively delivered to targets that have heretofore been difficult, if not impossible, to reach in a timely, cost effective and/or efficacious manner. Nozzles and nozzle-containing systems are provided for combining water, injected foam and air to generate and/or deliver high volume, low pressure foam. The foam generation systems may be part of portable units that may be worn or otherwise supported by a user (e.g., a back pack), manually transported (e.g., a push cart), or transported with power-assistance (e.g., a power-assist cart). The systems may also be vehicle-mounted. Exemplary nozzle systems include a diffuser unit that facilitates aeration of the water and foam mixture that is fed to the nozzle system.

Abstract: A foam producing nozzle for attachment to a spray nozzle which is readily attached and removed therefrom. The foam producing nozzle has air channels which do not lend themselves toward leaking. The dilution rate of the chemical concentrate is not affected by the foam producing nozzle.

Abstract: A mist sprayer includes a base, a pump, a pressure storage member, a circuit board, a mounting tube, an injection unit, a decorative shade, a mounting seat, a guide unit, a bottle, and a plug. Thus, the liquid is mixed with and atomized by the pressurized gas and the misted gas hits the striking face of the guide unit to multiple misted molecules, thereby enhancing and optimizing the atomized effect of the liquid.

Abstract: It is an object of the invention to provide an injection nozzle that efficiently foams foamed aerosol content, thereby improving adhering ability onto applying part. Furthermore, facilitating the oxidization of the foamed aerosol content and improving the effectiveness of the foamed aerosol content. It is also an object of the invention to provide an aerosol injection nozzle for injecting the foamed aerosol content that the clogging is prevented even when the foamed aerosol content have a high viscosity with a simple constitution and in low cost. An aerosol injection nozzle according to the invention includes a collision wall for foamed aerosol content to be collided and interfusing with air, disposed at an injection outlets. The collision wall is disposed within a retention chamber for temporary retaining the foamed aerosol content.

Abstract: An aerosol dispenser assembly (1) has a container (2) holding a liquid product and a liquefied gas propellant for propelling the liquid product from the container, the propellant being present in a quantity of at most about 25% by weight of the contents of the container (2). A valve (4) is attached to the container (2) for selectively dispensing the liquid product from the container (2) as a mist. The assembly (1) is configured such that the mist has a small particle size, is dispensed at an expeditious rate, and very little product is retained in the container (2) when the propellant is depleted.

Abstract: A liquid dispensing, manually operated trigger sprayer has a trigger with an ergonomic finger engagement surface. The trigger finger engagement surface extends longitudinally across the front of the trigger and has a protrusion at the top of the surface. The protrusion has a finger engagement surface portion that rests on the top of a finger of a user's hand while the user's hand manipulates the trigger of the trigger sprayer.

Abstract: An aerosol dispenser assembly (1) having a container (2) that contains a liquid product, and a propellant for propelling the liquid product from the container (2). The propellant is a dual phase hydrocarbon propellant, is free of normal butane, and is at most 25% by weight of the contents of the container. A valve (4) is attached to the container (2) for selectively dispensing the liquid product from the container (2) as a mist, the mist having an average particle size of less than 35 &mgr;m (0.0014″), over at least 75% of the life of the dispenser assembly (1). The dispenser assembly (1) is capable of dispensing over 98% by weight of the liquid product from the container (2). A vapor tap (24) is formed in the valve (4) to facilitate thorough mixing of the propellant and the liquid product prior to dispensing, and a valve stem (12) is disposed in the valve (4). The valve stem (12) defines at least one stem orifice (26) for flow of the product during dispensing.

Abstract: A manually actuated sprayer has an orifice cup with a reverse taper mounted within a cylindrical bore of the discharge passage for positively retaining the orifice cup in place without dislodgement during spray actuation.

Abstract: A nozzle comprising a thin, flexible substantially planar polymeric film having a plurality of pores with structures allowing for generation of an aerosol at reduced extrusion pressure is disclosed. The pores can comprise at least two sections, or steps, in which the thickness of the membrane is reduced in stepwise fashion, or the pores can be tapered. Nozzles formed comprising pores having such structures permit aerosol generation at lower extrusion pressures, thereby allowing for decreased weight of aerosolization devices, increased efficiency, increased portability and increased battery life. The pore structures also allow for the use of thicker, more easily processed polymeric films in manufacturing while having a thinner, more efficient aerosolization area. The use of decreased extrusion pressures also results in increased uniformity in aerosol generation and improved reliability of other components.

Abstract: A trigger sprayer valve assembly that has a conical flange that controls the flow of liquid in a downstream direction through a liquid passage of the trigger sprayer. The valve is constructed with an elongate stem or shaft that facilities the assembly of the valve into the trigger sprayer and a positioning plug that solely holds the valve in a centered position in the liquid passage of the trigger sprayer.

Abstract: The present invention relates to an aerosol spraying apparatus which is compact in size, is easy to use, and is suitable for use in a state where it is installed on a floor. The aerosol container (11), including a stem (12) has a tip-preventing shape and, in the aerosol container (11), there are provided an operation portion (208) for operating the stem (12), and a spray orifice (207) for spraying aerosol contents jetted out from the stem (12) to the outside. The spray orifice (207) is structured such that it sprays the aerosol contents in the opposite direction from the operation position of the operation portion (208).

Abstract: The foam marking device of the present invention includes a solution tank with a tube extending upwardly therein. An air line extends from an air pump and into the tank so as to provide air into the tube. The air passes through a porous element so as to create air bubbles. The tube includes an elongated slot that allows foam solution within the tank to enter the tube. The air bubbles generate foam within the upper end of the tube. The foam passes through a homogenizer at the upper end of the tube and then into a foam line for discharge onto the ground. The slot serves dual functions, by allowing solution in the tank to enter the tube and by allowing foam within the tube to enter the tank when the pressure in the foam discharge line exceeds the pressure within the tube.

Abstract: A spraying device for dispensing liquids which foam by deformation of a container. A first body is coupled is the neck of a container. The body forms a chamber where an air liquid mixture is produced. A filter is located over a spraying duct for producing foam as the liquid passes therethrough. A second body surrounds the first body and contains a measured volume of liquid which enters the chamber from the suction tube when the container is inverted.

Abstract: A foaming apparatus and method according to which a mixture of gas and a liquid is introduced into a vessel at a predetermined velocity and passes through a passage in the vessel. The flow of the mixture through the passage is increased to increase the velocity of the mixture and cause corresponding shearing forces on the mixture to create a turbulance and form foam from the mixture. The restrictor can be moved in the passage to vary the amount of restriction and therefore the amount of the foam.

Abstract: A nozzle assembly including a nozzle member, a cap member, a spinner and a foam tube. The cap member is rotationally mounted on the nozzle member and may be rotated from an “off-position” to a “foam-position” with continued rotation bringing the cap member to a “spray-position” and then to a second “foam-position” and then to the “off-position.” Rotation of the cap member drives foam tube from a retracted position to an extended position extending forward of the nozzle member when the cap member is in the “foam-position.” The spinner rotates to atomize liquid flowing through the assembly.

Abstract: An atomizer including a gas exit, an outlet adjacent the gas exit, and a deflector for deflecting gas issuing from the gas exit over the outlet for drawing a substance to be atomized out from one outlet and atomizing the substance in the gas issuing from the gas exit characterised in that the deflector is movable between a first position in the path of the gas issuing from the gas exit for atomization and a second and non-atomizing position.

Abstract: An atomizer including a gas exit, an outlet adjacent the gas exit, and a deflector for deflecting gas issuing from the gas exit over the outlet for drawing a substance to be atomized out from one outlet and atomizing the substance in the gas issuing from the gas exit characterised in that the deflector is movable between a first position in the path of the gas issuing from the gas exit for atomization and a second and non-atomizing position.