96 results about "Ultrasonic nozzle" patented technology

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. The ultrasonic waterjet apparatus (10) performs these tasks with much greater efficiency than conventional continuous-flow waterjet systems because of the repetitive waterhammer effect. A nozzle with multiple exit orifices or a rotating nozzle (76) may be provided in lieu of a nozzle with a single exit orifice to render cleaning and de-coating large surfaces more efficient. A water dump valve (27) and controlling solenoid are located in the mobile generator module (20) rather than the gun (50) to make the gun lighter and more ergonomic.

A method for coating a medical appliance includes suspending the medical appliance with a fluidizing gas flow and directing a coating onto an ultrasonic nozzle. The ultrasonic nozzle is directed towards the medical appliance. The method also includes vibrating the ultrasonic nozzle at a rate sufficient to atomize the coating. A device for coating a medical appliance includes a fluidizing gas source adapted to suspend the medical appliance in a suspension area and an ultrasonic nozzle directed at the suspension area and adapted to vibrate. The device also includes a coating source adapted to direct coating onto the ultrasonic nozzle. A medical appliance is provided which has a coating applied by the method.

The spray painter consists of ultrasonic nozzle, heater, powder feeder and other parts. The ultrasonic nozzle is mounted in the inlet of the spraying chamber, and the controller connected to the air compressor with air tank is connected via a powder feeding switch and pressure regulating switch to the heater and the powder feeder. The heater has one end connected to the ultrasonic nozzle. There is one powder recovering unit in the outlet of the spraying chamber. The ultrasonic nozzle is connected with the powder feeder and consists of three parts of contracting section, throat and expanding section. The present invention has high powder feeding efficiency, long service life and no oxidation.

The invention relates to a method and apparatus for applying and forming a coating on a substrate surface by the application of at least one atomized coating forming material onto the substrate to form the coating. The atomized coating forming material, upon leaving a suitable atomizer which can be an ultrasonic nozzle or nebulizer for example, passes through an exciting medium and, upon leaving the exciting medium, passes to the substrate. The substrate is positioned remotely from the exciting medium.

The invention relates to a method for preparing a balloon dilatation catheter medicinal coating for treatment. The method comprises the following steps: adding a diluted solvent into a glass bottle filled with a medicine for treating vascular endothelial re-proliferation, oscillating to completely dissolve the medicine to prepare a medicine solution; mixing the medicine solution and an interference solvent which is incompatible with the medicine, and feeding into a dual-channel ultrasonic nozzle to coat a balloon dilatation catheter; drying, sterilizing and packaging the coated balloon dilatation catheter. According to the method, the medicine solution is mixed with another incompatible interference solvent before ultrasonic coating, so that the shape of the medicine in the solution is changed, and the mixture is fed into the ultrasonic nozzle to perform ultrasonic coating to achieve the aims of controlling the coating granularity, increasing the coating binding force and controlling the releasing rate of the medicine. The medicine coating formed by the method has the characteristics of uniformity, strong binding force with balloon, controllable crystal granularity, durable drug effect and the like.

The objective of the present invention is to provide an ultrasonic spray nozzle integrated with a spray width control device. According to the present invention, the ultrasonic spray nozzle integrated with a spray width control device is configured to include: a main container (10) in which a space portion is disposed; an upper supporter (20) coupled to the main container (10), wherein a flame outlet is disposed on the surface facing the lower side of the main container (10) and a roast plate support unit (22) is disposed at a location around the flame outlet; and a fuel container (30) in which a fuel charging unit is disposed and a section contact portion (34) is disposed in the peripheral portion of the fuel charging unit in such a manner as to be coupled to the main container (10), disposed at a position facing the flame outlet of the upper supporter (20), and in partial contact with the main container (10) via the section contact portion (34), wherein the other part is spaced apart from the main container (10).

An ultrasonic nozzle configured to form relatively small drops of liquid at relatively high rates. The nozzle includes two horns, at least one of which includes a ceramic material. The nozzle also includes one or more transducers that cause mechanical motion in at least one of the horns. In addition, a method of forming micrometer-scaled drops of liquid at relatively high rates is provided.

A method and apparatus for producing surface stabilized nanometer-sized particles includes the steps of mixing reactants, a surface-stabilizing surfactant, and a high boiling point liquid to form a mixture, continuously passing the mixture through an ultrasonic spray nozzle to form a mist of droplets of the mixture, injecting the mist directly into a furnace to cause a reaction between species of the mixture, and collecting the nanometer-sized products. The ultrasonic nozzle is positioned directly at one end of the heating furnace, preferably the top end, for travel of the droplets through the furnace. The continuous liquid-flow process, along with certain operating parameters, eliminates the need for dilution of the high boiling point liquid with a low boiling point solvent as in the prior art, significantly increases the yield, improves the quality of the product, and makes the process scalable.

Ultrasonic nozzle devices without a central channel but employing a design of cascaded multiple Fourier horns in resonance produce micrometer-sized monodisperse or narrowly-sized droplets with greatly reduced electrical drive power requirements. The liquid to be atomized is brought externally to or adjacent to the endface of the nozzle tip. The above liquid transport method is equally applicable to the ultrasonic nozzle-array devices that are comprised of a plurality of ultrasonic single-nozzle devices configured in parallel. The longitudinal length, transverse width, shape, and area of the nozzle endface of single-nozzle and nozzle-array devices may be tailored or designed (e.g. enlarged) to obtain optimum or large quantities of product droplets to achieve high throughput. By increasing the drive frequency to 8 MHz or higher, sub-micrometer-sized monodisperse or narrowly-sized droplets can be produced using the ultrasonic single-nozzle and nozzle-array devices or any solid endface.