Keywords
Ultrasonic Liquid Sprayer, Fine-Dispersed Aerosol, Disperser, Mechatronic Systems
Description
Purpose: ultrasonic liquid atomization for obtaining fine-dispersed aerosol.
Results: obtaining of an aerosol with the dispersion ability within the range of 5…30 μm at the rate of atomization of liquids, the viscosity of which approximates that of water, within the range of 5 ml/min to 3 l/min. The dispersers operate at 22…66 kHz. The core operation principle is the technique of ultrasonic atomization in a thin layer.
The advantages of ultrasonic dispersers:
- the dispersers are direct-flow and operate at the liquid head of 200…900 mm of the water column, due to which they supersede costly inducers relying on conventional atomization techniques;
- the dispersers do not need to be heated and therefore do not affect the thermal behavior of the area within which they operate, in contrast to evaporating dispersers;
- the dispersers do not cause pressure shifts when used in the closed volume chambers in contrast to the dispersers that use compressed air for atomization;
- as their parts are not subject to friction or mechanical wear, no wear can enter the environment;
- as the exit nozzle is located at the high-amplitude sound vibration area, the sprayer is clog proof;
- the electronic circuit of initiation allows to create, using them as the basis, mechatronic systems for maintaining desired humidity using microprocessor control.
Different dispersers’ designs were developed for different outputs; the interrelation was studied between the aerosol dispersion ability and the parameters of the spraying surface resonant vibration; the automated projection system was developed.