An ultrasonic atomiser nozzle is an air driven acoustic oscillator for atomising liquids by passing them through a field of high frequency sound waves. The resulting droplets are very fine.
Download Ultrasonic Atomisers Data Sheet
Liquid atomisation occurs through a two step process:
A. Liquid is ejected through a number of small orifices into the spray nozzle outlet orifice, where a central high velocity air stream produces the first liquid breakup through a shearing action,
B. The air stream carrying the droplets then impacts onto a resonator placed in front of the spray nozzle outlet orifice, generating a field of high frequency sound waves. Flying through the sound wave field, the droplets are vigorously shattered into very fine droplets. Air bypassing the resonator carries the atomised droplets downstream as a soft, low velocity spray or “fog”.
Advantages:-
- infinite turndown ratio;
- can’t dribble as even the finest drop is atomised;
- self cleaning as sound waves keep the tip clean;
- extremely large orifice, so won’t clog;
- are able to produce a consistent level of droplet size over a wide flow range.
Watch Video of Ultrasonic Air Atomizer
Applications:
Excellent for burning of fuel oil, tar, etc.; for evaporative cooling or conditioning of hot gases; for dust suppression; for humidification; etc.
