Abstract: The repellency increasing structure includes a substrate, if a surface of the substrate is flat, a flat surface of which shows lyophilic property with respect to a liquid having a surface tension lower than that of water and multiple recesses multiple and/or projections that are formed in the surface of the substrate. Inner walls of the recesses and outer walls of the projections are substantially parallel to a thickness direction of the substrate. The structure further includes a repellent layer that covers the recesses and the projections. In the liquid ejection head, a solution ejection surface around multiple through-holes of a ejection substrate corresponds to the surface of the substrate of the repellency increasing structure in which the recesses and/or the projections are formed. In the stain-resistant film, the substrate of the repellency increasing structure is a support film.

Abstract: The mist ejection head has: a nozzle plate in which a nozzle hole for ejecting liquid is formed; a liquid chamber connected to the nozzle hole; an ultrasonic wave generating device which applies an ultrasonic wave to the liquid in the liquid chamber; and a reflective wall which reflects the ultrasonic wave applied to the liquid, wherein: the reflective wall is disposed so as to oppose the nozzle plate and has an axially symmetrical shape comprising a portion of a parabolic surface, the portion including an apex of the parabolic surface and being on an apex side with respect to a focal point of the parabolic surface; an axis of the parabolic surface passes through the nozzle hole; and the focal point of the parabolic surface is positioned in a vicinity of the nozzle hole.

Abstract: Disclosed is a coating system for the selective application of coatings to substrates to apply a uniform coating to selected areas of the substrate without the need for masking. The system comprises a first coating applicator for coating large areas of the substrate, a second coating applicator for coating small areas of the substrate, a motion and positioning system for both coating applicators and a system controller. Also disclosed is an ultrasonic spray coating system comprising an ultrasonic transducer with spray forming head, integrated fluid delivery device with air and liquid supply passage ways, support brackets and an ultrasonic power generator.

Abstract: A multi-element ultrasonic atomizer and method for atomizing liquids is described, having a power generator, a converter, an ultrasonic horn coupled to the converter, and at least two atomizing probes coupled to the ultrasound horn, each atomizing probe including at least one liquid passage extending longitudinally along the atomizing probe and terminating at an atomizing tip at a distal end of the atomizing probe. The atomizing probes are made to vibrate at same frequency. A liquid is delivered to an atomizing surface through the liquid passage and through an opening at the atomizing tip.

Abstract: A liquid discharge apparatus for aligning needle-like structures. The apparatus includes a tapered nozzle having an entrance and a discharge opening. The nozzle is tapered in such a manner that its diameter decreases towards the discharge opening. The diameter of the nozzle at the entrance is larger than the length of the needle-like structures, and the diameter of the discharge opening is larger than the diameter of the needle-like structures and smaller than the length of the needle-like structures. By passing through the nozzle, the needle-like structures are aligned.

Abstract: The present invention related to an ultrasonic nebulizer apparatus and a method for adjusting an operation frequency and checking an operating state of the ultrasonic nebulizer apparatus. The apparatus according to the present invention comprises a current detecting element for actively detecting an electrical current passed through it early. By detecting the current to determine a resonance frequency and whether deviated from a predetermined normal range, the nebulizer apparatus according to the present invention can check the operating state and operate at the resonance frequency for increasing efficiency and saving power.

Abstract: The present invention provides a liquid atomizer for atomizing liquid and applied in an atomizing device having an accommodating space and a through hole. The liquid atomizer includes a vibrating element having a first hole corresponding to the through hole; a spray plate having a plurality of spraying holes corresponding to the first hole and being connected with the vibrating element; and a structure element having a second hole corresponding to the plurality of spraying holes of the spray plate and being connected with the spray plate so that the spray plate is disposed between the vibrating element and the structure element. The vibrating element, the spray plate and the structure element are assembled in the accommodating space of the atomizing device. Liquids are atomized via the spraying holes of the spray plate.

Abstract: In a system and process for ultrasonically treating a liquid and delivering the liquid as a spray of liquid droplets, liquid is directed to flow along a flow path over a first ultrasonic waveguide, with the first ultrasonic waveguide having at least one agitating member extending outward therefrom and into the flow path. The first ultrasonic waveguide and agitating member(s) are excited to agitate the liquid as the liquid flows along the flow path. The liquid is further directed to flow along the flow path over a second waveguide, with the second waveguide having a terminal end adjacent an exit of the flow path. The second ultrasonic waveguide is ultrasonically excited at least at its terminal end to ultrasonically energize the liquid just prior to the liquid exiting the flow path such that the liquid exits the flow path as a spray of liquid droplets.

Abstract: A method of prepping a surface using a high-frequency forced pulsed waterjet entails generating a high-frequency signal having a frequency f using a high-frequency signal generator, applying the high-frequency signal to a transducer having a microtip to cause the microtip of the transducer to vibrate to thereby generate a forced pulsed waterjet through an exit orifice of a nozzle having an exit orifice diameter d and a length L. The forced pulsed waterjet prepares the surface to within a predetermined range of surface roughness. The surface roughness is determined by selecting operating parameters comprising a standoff distance (SD), a traverse velocity VTR of the nozzle, a water pressure P, a water flow rate Q, a length-to-diameter (L/d) ratio, a microtip-to-orifice distance (a), the frequency f, and an amplitude A of the high-frequency signal.

Abstract: A process and a device for producing a finely distributed fuel mist, especially for preparing an easily burnable fuel-air mixture for the heater (25) of a motor vehicle. In a chamber (1) which is partially filled with a fuel (3), an ultrasonic oscillator (2) is immersed in the liquid fuel (3) and a fuel column with an exposed fuel surface (4) is formed above the ultrasonic oscillator (2). The ultrasonic oscillator (2) is operated with a frequency such that extremely small fuel particles (5) are detached at the surface (4) of the and a fuel mist is formed in the chamber (1). In a heater, the device in located in an air flow stream which creates a negative pressure that draws the fuel mist out of the chamber opening (6).

Abstract: The invention is an apparatus and methods for optimizing the performance and protecting one or more aerosol generating transducers from deterioration while operating in a chemically reactive aqueous solution by utilizing one or more protective barrier techniques to eliminate chemical interaction between the aqueous solution and the transducers. The method of the present invention produces an aerosol producing transducer with the transducer housing and assembly to be constructed in such a way as to assure its efficient and effective long-term and problem free operation in an aqueous solution that is chemically reactive.

Abstract: Volatile liquid droplet dispenser device, comprising: a first substrate having a space for containing liquid, and liquid outlet means for ejecting liquid from the device, the space arranged proximate to the liquid outlet means so liquid may exit the space by traversing the liquid outlet means, a second substrate comprising a support for receiving and holding the first substrate, and a vibrating element arranged to actuate liquid in the space so liquid undergoes vibration and contacts the liquid outlet means thereby exiting the device as a liquid droplet spray, wherein the liquid outlet means comprises a perforated nozzle membrane having a plurality of outlet nozzles, and an actuating element arranged between the vibrating element and the first substrate, and a sealing element arranged between the actuating element and the first substrate, wherein the actuating element and the sealing element are arranged to transmit ultrasound energy to liquid in the space.

Abstract: A micro-spray system resonance frequency modulation method and device designed to minimize resonance frequency drift during atomization involves using a resonance frequency modulation unit for modulating resonance frequency and nodes, controlling and calibrating resonance frequency, and performing real-time measurement and correction to prevent operating frequency from drifting beyond a preferred operating frequency range, with a view to increasing spray flow and spray area, minimizing effects of ambient factors, and overcoming drawbacks of prior art.

Abstract: An ultrasonic waterjet apparatus (10) has a mobile generator module (20) and a high-pressure water hose (40) for delivering high-pressure water from the mobile generator module (20) to a hand-held gun (50) with a trigger and an ultrasonic nozzle (60). An ultrasonic generator in the mobile generator module (20) transmits high-frequency electrical pulses to a piezoelectric or magnetostrictive transducer (62) which vibrates to modulate a high-pressure waterjet flowing through the nozzle (60). The waterjet exiting the ultrasonic nozzle (60) is pulsed into mini slugs of water, each of which imparts a waterhammer pressure on a target surface. The ultrasonic waterjet apparatus (10) may be used to cut and de-burr materials, to clean and de-coat surfaces, and to break rocks.

Abstract: One embodiment of the invention is directed to an apparatus for atomizing a fluid. This apparatus includes an atomizing nozzle assembly. The atomizing nozzle assembly includes: a spray applicator enclosure having a fluid entry zone, a flow shape profiler region, a transducer, and a cavitation enhancer module, wherein the cavitation enhancer module includes a residence modulation zone and the residence modulation zone includes a backward facing step region. The apparatus is configured such that fluid can enter the fluid entry zone to the nozzle profiler, the transducer and the cavitation enhancer module. Other embodiments relate to methods for atomizing fluids.

Abstract: The present invention provides a medical liquid droplet apparatus, which comprises a driving base and a polymeric film. The driving base is capable of providing a vibrating energy. The polymeric film, having a plurality of tiny openings formed thereon, is disposed on the driving base for receiving the vibrating energy so as to generating liquid droplet. By means of the present invention, the embrittled problem due to the high frequency vibration occurred in the conventional nebulizing film or malfunction due to the chemical eroding of the conventional vibrating film can be avoided.

Abstract: A spraying mechanism configured to form uniform and thin coatings on foodstuffs and food packaging materials. The spraying mechanism includes a nozzle and a surface positioned adjacent to the nozzle, wherein the surface is configured to support at least one of a foodstuff and a food packaging material. The nozzle includes an atomizing section including a ceramic material and an intermediate section configured to promote ultrasonic-frequency mechanical motion in the atomizing section.

Abstract: A microdosing device includes a dosing chamber which at least temporarily receives a quantity of liquid, and to which at least one dispensing opening is assigned. A vibration unit is operatively connected to at least one boundary surface of the dosing chamber in order to cause this boundary surface to oscillate for the purpose of a dispensing operation. At least two admission channels spaced apart from one another are provided on the dosing chamber.

Abstract: Apparatus and method for dispensing droplets of a liquid includes structure providing a passage along which the liquid may be delivered to form a droplet at an orifice. The structure is configured to propagate a shockwave to impact the droplet and thereby to displace it from the orifice, whereby the droplet is dispensed. The structure may provide an elongate passage to longitudinally receive a syringe needle positionable with its tip, and the orifice at the tip, at or adjacent on open end of the passage, one or more needle guides to locate the needle in the passage, which is of greater cross-section than the needle at the open end, and a seal arrangement to substantially seal the passage about the needle at a position displaced from the open end of the passage whereby to define a chamber between the position and the open end.

Abstract: Disclosed herein is a domestic injection-type ultrasonic washing apparatus comprising an oscillator module and an injector module. The oscillator module includes an oscillation circuit unit provided with various elements to generate electric vibration, ultrasonic vibrators located underneath the oscillation circuit unit and electrically connected to the oscillation circuit unit to convert the electric vibration to mechanical vibration, and a radiation plate having vibrator seating openings. The injector module includes a raw water inlet portion, a fluid passage housing having an inner fluid passage to allow inlet raw water to pass while coming into contact with the radiation plate, and injection nozzles to ultrasonically vibrate and inject the raw water. The washing apparatus achieves reduction in the size thereof, and ease of assembly, repair and exchange of damaged modules. Also, the washing apparatus shows improved radiation effect and uniform supply of wash water.

Abstract: The invention relates to an injection valve, comprising a control chamber (15) with a control piston (16) that is functionally linked with a nozzle needle (35). The control chamber (15) is linked, via an inlet throttle (13), with pressurized fuel, and with an outlet throttle (14) with a valve chamber (9). A servo valve (5) is disposed in the valve chamber (9), said servo valve opening a connection between the valve chamber (9) and a return element (40) depending on its position. The inventive injection valve further comprises a bypass throttle (12) that is interposed between the fuel feed line and the valve chamber.

Abstract: An ultrasound apparatus capable of mixing and/or atomizing fluids is disclosed. The apparatus includes a horn having an internal chamber through which fluids to be atomized and/or mixed flow. Connected to the horn's proximal end, a transducer powered by a generator induces ultrasonic vibrations within the horn. Traveling down the horn from the transducer, the ultrasonic vibrations induce the release of ultrasonic energy into the fluids to be atomized and/or mixed as they travel through the horn's internal chamber. As the ultrasonic vibrations travel through the chamber, the fluids within the chamber are agitated and/or begin to cavitate, thereby mixing the fluids. Upon reaching the front wall of the chamber, the ultrasonic vibrations are reflected back into the chamber, like an echo. The ultrasonic vibrations echoing off the front wall pass through the fluids within the chamber a second time, further mixing the fluids.

Abstract: A device for spraying a cosmetic composition may include a sonotrode, the sonotrode having an end collar defining an ejection surface for ejecting particles of composition, the collar being suitable for bending under the effect of vibration of the sonotrode.

Abstract: In a control system and method for operating an ultrasonic liquid delivery device a first drive signal is delivered according to a first drive signal control schedule to an ultrasonic waveguide assembly to excite the ultrasonic waveguide for a predefined time. At each of a plurality of instances of the first drive signal control schedule a phase angle associated with the current and voltage in the waveguide assembly during ultrasonic vibration thereof is determined. A second drive signal control schedule is determined, including a second ultrasonic drive signal frequency for each of the instances at which the phase angle of the first drive signal was determined. The second drive signal frequency at each of the instances is based at least in part on the phase angle determined at each instance during ultrasonic vibration of the waveguide assembly in accordance with the first drive signal control schedule.

Abstract: A fuel injection system is disclosed. The fuel injection system has a nozzle member configured to receive fuel and having at least one injection orifice and a valve disposed with the nozzle member and movable between an open position at which fuel flows through the at least one orifice and a closed position at which fuel flow through the at least one orifice is blocked. The fuel injection system also has an actuator coupled to the valve and configured to move the valve between the open position and the closed position in response to a signal applied thereto and a controller in communication with the actuator, the controller being configured to apply to the actuator an ultrasonic frequency signal such that the valve remains at or between the open position or the closed position and vibrates at the ultrasonic frequency.

Abstract: A scent dispenser is integratable into a portable device, such as a mobile handset. The scent dispenser has a vibrating element configured to vibrate in an ultrasound frequency range for dispensing a scent material. Scent dispensing can be in response to an incoming signal received by a mobile handset, but scent dispensing can also be controlled by a user. The scent material is stored in a compartment having a channel with a valve and the vibrating element can be used to open the valve for replenishing the scent material when the vibration is in a low frequency range such as 1-10 Hz. The vibrating element can also be used to produce audio signals. Thus, the scent dispenser can also be integrated with a sound producing unit in a mobile electronic device.

Abstract: A fluid injection device includes a fluid supply unit that accommodates and supplies fluid, a fluid injection unit that injects fluid supplied from the fluid supply unit, and a driving waveform generating device which is equipped with at least one adjusting device, a one-input multiple-control parameter changing unit that simultaneously changes plural control parameters for determining a fluid injection condition of the fluid injection unit on the basis of a signal from the at least one adjusting device, and a driving waveform generator that generates and outputs a driving waveform of the fluid injection unit on the basis of the control parameters set by the one-input multiple-control parameter changing unit.

Abstract: An ultrasound apparatus capable of mixing and/or atomizing fluids is disclosed. The apparatus includes a horn having an internal chamber through which fluids to be atomized and/or mixed flow. Connected to the horn's proximal end, a transducer powered by a generator induces ultrasonic vibrations within the horn. Traveling down the horn from the transducer, the ultrasonic vibrations induce the release of ultrasonic energy into the fluids to be atomized and/or mixed as they travel through the horn's internal chamber. As the ultrasonic vibrations travel through the chamber, the fluids within the chamber are agitated and/or begin to cavitate, thereby mixing the fluids. Upon reaching the front wall of the chamber, the ultrasonic vibrations are reflected back into the chamber, like an echo. The ultrasonic vibrations echoing off the front wall pass through the fluids within the chamber a second time, further mixing the fluids.

Abstract: Devices and methods for depositing fluids on substrates in patterns of spots, lines, or other features use a nozzle, which is preferably configured similarly to a micropipette, having a piezoelectric crystal or other ultrasonic actuator coupled to one of its sides. The nozzle may be charged via capillary action by dipping it into a well containing the fluid to be deposited, and may then be positioned over a desired area of a substrate, at which point activation of the ultrasonic actuator at ultrasonic frequencies will eject the fluid onto the substrate. The needle may subsequently be dipped into a well of rinsing fluid for cleaning. Spots or lines on the order of 5 micrometers width may be generated, making the invention particularly suitable for use in biological applications such as microarray production and in microelectronics applications such as the printing of organic circuitry.

Abstract: A mist-generating device that can be connected to a vehicle's Low Direct Current Voltage (LDCV) power supply is disclosed. The device can be used to treat mold, bacteria and clean or remove odors on exposed and hard-to-reach surfaces of the interior of a car. The device can include a unique filling system that can be used to prevent foreign materials from entering into the unit, including fluids or substances that would deteriorate the performance of the unit or the components of the device itself. The inside of the device can include an internal anti-foam and anti-splash structure designed to keep electronic components dry and reduce the foaming and turbulence of the fluid being misted. Further, the inside of the device in one embodiment is split into three adjacent areas, which govern efficient flow of air and atomized chemicals through the device.

Abstract: An ultrasonic nozzle for applying a coating to an exterior surface of a substrate. The ultrasonic nozzle has an ultrasonic nozzle having an amplitude. The amplitude is greater than 120 microns.

Abstract: The present invention relates to a nebuliser and method of nebulising a liquid. The nebuliser includes a nebulisation chamber (1) having a well (2) adapted to contain a liquid (3) to be nebulised. An energy source in the form of an ultrasonic transducer (6) has as a curved energy transmission surface (7). This curved energy transmission surface defines a focal point (8) and a focal length (9). The energy source is spaced from the well such that the distance between the focal point and the energy source intrudes into the well not greater than 50% of the focal length. Preferably the well is shaped such that during nebulisation the level of the liquid in the well remains within a predetermined focal length range to thereby provide a substantially constant flowrateut of nebulised liquid. The nebuliser may also include a deflector baffle or fountain diverter (16) which acts to deflect the nebulised liquid fountain rising from the well.

Abstract: A fuel injector having a piezoelectric actuator in an injector body and held in contact with the injector body on one side and with a sleevelike booster piston on the other via first spring means. A nozzle body joined to the injector body and a stepped nozzle needle is guided in the body. A second spring disposed inside the booster piston which together with the injection pressure acting on the back side of the nozzle needle keeps the nozzle needle in the closing position. A control chamber on the end toward the nozzle needle of the booster piston communicates, via at least one leakage gap with a fuel supply at injection pressure, and the nozzle needle is urged in the opening direction by the fuel located in the control chamber.

Abstract: An improved fragrance vibrating and nebulizing module comprises a holding unit which is installed on an opening of a container, so that a plurality of retainers can retain a wick in place. Two engaging portions formed on an outer periphery of the holding unit can cooperate with guide grooves formed on a central annular portion of a vibrating and nebulizing base and be rotationally connected to be in place. After a receiving space of a top retaining unit is mounted with a resilient element and a vibrating plate, the resilient element and the vibrating plate are retained in place by a resilient retainer. Through holes of the top retaining unit are connected with resilient tenons on the vibrating and nebulizing base. While in use, the vibrating and nebulizing module can draw up a fragrance via the wick, so that the fragrance is nebulized and dispersed in contact with outside air.

Abstract: A volatile liquid droplet dispenser device includes: a first substrate (1) having a space (2c) for containing a liquid substance, and having liquid outlet means (2a) for ejecting the liquid substance; a second substrate (3) having a liquid inlet means (3i) for allowing the liquid substance to enter said device; an actuating element (2b, 8, 10) arranged to actuate the liquid substance so as to exit the device as a liquid droplet spray, wherein the liquid outlet means (2a) of the first substrate comprises a perforated nozzle membrane (2a) having a plurality of outlet nozzles, and wherein the first substrate (1) contains at least one fluidic capillary priming channel (1a, 1b, 1c) arranged to receive liquid substance from the space (2c) so as to fill the channel such that the liquid substance is in close proximity to the outlet nozzles for priming the liquid substance for ejection through the nozzle membrane.

Abstract: The present disclosure relates to a spraying device for a cosmetic composition comprising a container having inner space comprising a liquid cosmetic composition and provided with a spraying mechanism comprising: a perforated membrane, wherein the membrane perforations allow the container inner space to communicate with the external environment, an actuator for vibrating the membrane, and a mechanism for making the liquid cosmetic composition contained in the container contact an inner surface of the membrane, wherein the liquid cosmetic composition, under the effect of the membrane vibrations, flows through the perforations until reaching an outer surface of the membrane where it emerges as droplets, and wherein the liquid cosmetic composition comprises, in a cosmetically acceptable medium, at least one fixing polymer.

Abstract: An ultrasonic shower cleaning apparatus is disclosed which is capable of efficiently cleaning both surfaces of an article and configured to have a reduced size enabling an installation space thereof to be decreased. A pair of ultrasonic shower cleaning mechanisms each include a nozzle, a disc-shaped ultrasonic transducer arranged so as to face a backward end of the nozzle and an inlet port for a cleaning liquid formed opposite to a side surface of the nozzle. The ultrasonic shower cleaning mechanisms are integrally incorporated in one casing in such a manner that axes of the nozzles cross each other at a predetermined angle. The casing is provided with one inlet branch port connected to the inlet ports of the ultrasonic shower cleaning mechanisms. The casing may have a groove formed therein in which an edge of the article arranged between the two nozzles can be inserted.

Abstract: A membrane actuator includes a magnetically actuatable membrane and a magnetic trigger. The membrane includes a shape memory alloy (SMA), and the magnetic trigger is configured to induce a martensitic transformation in the SMA, to produce a larger force than would be achievable with non-SMA-based materials. Such a membrane actuator can be beneficially incorporated into a wide variety of devices, including fluid pumps, shock absorbing systems, and synthetic jet producing devices for use in an aircraft. The membrane/diaphragm can be formed from a ferromagnetic SMA, or a ferromagnetic material can be coupled with an SMA such that the SMA and the ferromagnetic material move together. A hybrid magnetic trigger, including a permanent magnet and an electromagnet, is preferably used for the magnetic trigger, as hybrid magnetic triggers are easy to control, and produce larger magnetic gradients than permanent magnets or electromagnets alone.

Abstract: The invention discloses a device (1) for atomising a product including: a reservoir (10) containing the product, means of atomising the product which include: a wall (20) permeable to the product through which the product is sprayed, an actuator (40) designed to cause the permeable wall (20) to vibrate thereby atomising the product, the device being characterised in that the reservoir contains a porous member (30), in contact with the permeable wall so as to feed product thereto, the porous member occupying substantially the entire volume of the reservoir.

Abstract: The present invention relates to a method of utilizing ultrasound to atomize a liquid comprising the steps of inducing ultrasonic vibrations within a solid member, delivering a liquid to be atomized to a surface of said member from which ultrasonic waves radiate from said member (hereafter referred to as a “radiation surface”), and allowing the liquid delivered to said radiation to be atomized and propelled away from said member. Delivering the liquid to be atomized to the radiation surface of the vibrating member may comprise the steps placing the liquid on a side of the vibrating member and allowing the liquid to be carried by the ultrasonic waves traveling through the vibrating member to a radiation surface. Alternatively, delivering the liquid to be atomized to a radiation surface of the vibrating member may comprise the step of passing the liquid through a channel opening within a radiation surface.

Abstract: An apparatus for freshening air, comprising: a base unit having a recess for engaging at least one cartridge; a power supply operably connected to the base unit; an active portion of a nebulizer that includes a piezoelectric element connected to be driven by a driving and switching circuit connected to the power supply, wherein the active portion is incorporated with the base unit; a detachable autonomous liquid droplet dispensing cartridge detachably engagable with the recess of the base unit, wherein the cartridge comprises a first airless bag for storing a first nebulizable liquid, a second airless bag for storing a second nebulizable liquid, a passive portion of the nebulizer, wherein the passive portion includes an interface; a casing enclosing the first and second bags, and housing the passive portion; wherein when the dispensing cartridge engages the recess of the base unit, the passive portion is connected to the active portion.

Abstract: A dispenser includes (i) a reservoir containing a personal care composition, wherein the personal care composition is a moisturizer, sun-protective material, after-sun care material, skin conditioning agent, astringent material, skin cleanser, acne treatment, cosmetic remover, massage oil, or skin nutrient agent; (ii) at least one nozzle in fluid communication with the reservoir; and (iii) an on-off frequency generator in fluid communication between the reservoir and the nozzle, the frequency generator adapted to deliver a pulse rate frequency of 0.1 to 500 Hz.

Abstract: The method of generation of pulsations of liquid jet consisting in that acoustic pulsations generated by acoustic actuator act directly or indirectly on the pressure liquid in acoustic chamber; generated pressure pulsations are amplified by mechanical amplifier of pulsations and transferred by liquid waveguide fitted with pressure liquid feed to the nozzle and/or nozzle system. Resonant natural frequency of the acoustic system can be matched to the frequency of acoustic pulsations by means of a tuneable resonant chamber.

Abstract: A rotary atomizer (1) has a rotary atomizing head (4) driven by an air motor (2) at a rotational speed of 4,000˜5,000 rpm, for example. A coating material is supplied to a central portion of the rotary atomizing head (4) through a paint supply pipe (5). The atomizer (1) further includes a supersonic horn (6) having a vibration plane (6a) located adjacent to the outer circumferential perimeter of the rotary atomizing head (4). The vibration plane (6a) is an inclined plane gradually increasing its diameter forward. The coating material immediately after spattered from the outer circumferential perimeter of the rotary atomizing head (4) is exposed to supersonic vibration from the vibration plane (6a), and it is atomized by the supersonic vibration to particles of a uniform grain size. At the same time, the atomized coating material is driven forward.

Abstract: In a method for cleaning a liquid delivery device such as a dispensing or pipetting device, the liquid chamber can be flushed in a cleaning step. To remove gas bubbles which might exist in the liquid chamber, for example, the liquid in the liquid chamber is vibrated during the cleaning step.

Abstract: The invention concerns a nozzle body for a liquid droplet spray device for atomising a high viscous liquid substance such as perfume. A first and second substrate enclose a space for containing the liquid substance. Outlet means are arranged in the second substrate and have at least one outlet nozzle and at least one output channel, said output channel having straight side walls. Each output channel has a stepped shape having a wider portion and a thinner portion, the wider portion being arranged adjacent the space. The thinner portion contains a protrusion section protruding beyond the top surface of the second substrate such that the exterior side wall of the protrusion section is at a substantially straight angle with respect to the top surface of the second substrate.

Abstract: In a method and apparatus for separating a solution, the solution containing a target substance is atomized into a mist in an atomizer (1) to produce a mixed fluid of mist and air. In the collection of the mist from this mixed fluid, an air transmission membrane (51) is used, and the air transmission membrane has a pore size that transmits air but does not transmit the target substance contained in the mist. The mixed fluid is brought into contact with the primary surface of the air transmission membrane (51), and the pressure on the primary surface is made higher than the pressure on the secondary surface of the opposite side. Thereby, the air in the mixed fluid is allowed to pass through the air transmission membrane (51) to separate part or all of the air contained in the mixed fluid.

Abstract: A fluid dispensing device comprises one or more micromechanical fluid dispensing mechanisms arranged to dispense fluids into the atmosphere. The fluids include any of a perfume, pheromone, fragrance, disinfectant, moisturizer, humectant, miticide, fumigant, deodorizer, sanitizing agent and insecticide. A dispenser controller communicates with the fluid micromechanical dispensing mechanisms to selectively activate the fluid micromechanical dispensing mechanisms. Optionally, the fluid dispensing device includes a sensor to detect the airborne concentration of fluids that are dispersed in the atmosphere. Optionally, one or more fluid dispensing devices may be arranged to form a system, perhaps including a system sensor and a system controller.

Abstract: A liquid jetting apparatus (50) to jet a droplet of a charged liquid solution onto a base material, having: a nozzle (51) in which an edge portion thereof is arranged to face the base material K having a receiving surface to receive the jetted droplet, and an inside diameter of the edge portion from which the droplet is jetted is not more than 30 [?m]; and a liquid solution supplying section (35) to supply the liquid solution into the nozzle (51), wherein a jetting electrode (58) of the jetting voltage applying section (35) is provided on a back end portion side of the nozzle, and an inside passage length of the nozzle is set to at least not less than ten times of the inside diameter.

Abstract: A micro sprinkle-nozzle and a sprinkling cap made therewith, wherein the sprinkle-nozzle includes a conducting vibrator and a water container. The conducting vibrator is composed of a vibrating ring in the form of a hollow ring made of a conductive material, and a metal membrane made of a conductive film, the specific portion of which has sprinkling holes distributed in a manner of dot matrix. While the vibrating ring is adhered to the metal membrane, the vibrator is installed to a pipe top of a water container to accomplish a sprinkle-nozzle. The sprinkle-nozzle is installed to the front end of the peak with one end thereof connected to a water pouch which can be electrified to spray mist, thereby obtaining a sprinkling cap.