Surface acoustic wave-based atomization device and method

Abstract

The invention discloses a surface acoustic wave-based atomization device, comprising: an atomization chip, polyester fiber paper and a liquid storage tank; the atomization chip comprises a piezoelectric single crystal substrate, and an interdigital energy transducer which is disposed on the piezoelectric single crystal substrate; one end of the polyester fiber paper is attached to the upper surface of the piezoelectric single crystal substrate, and the other end is inserted into the liquid storage tank to suck the liquid in the liquid storage tank onto the upper surface of the piezoelectric single crystal substrate; the interdigital energy transducer generates a surface acoustic wave on the upper surface of the piezoelectric single crystal substrate under the driving of a radio frequency signal to atomize the liquid on the upper surface of the piezoelectric single crystal substrate. The invention also discloses an atomization method. The invention solves the problems of poor liquid atomization effect and large and uneven spray droplet particles in the prior art.

Description

technical field [0001] The invention relates to an atomization device and method based on acoustic surface waves. Background technique [0002] Atomization has a wide range of applications and can be applied to different technical fields such as internal combustion engine fuel injection, inkjet printing, agricultural irrigation, mass spectrometry, chemical biological reactions, and pulmonary drug delivery. The realization of technical solutions in these different technical fields depends on Highly concentrated, monodisperse and sized spray droplets produced by nebulization methods. Traditional atomization methods include airflow atomization, pressure atomization and ultrasonic atomization, etc. The liquid atomization effect of airflow atomization and pressure atomization is poor, and the spray droplets are large and uneven, which is difficult to apply to The technical field of precise control of particle size. Ultrasonic atomization plays an important role in diluting sput...

AI Technical Summary

Problems solved by technology

However, the existing ultrasonic atomization equipment has a large volume, which is not easy to carry or transport; and the power required for ultrasonic atomization is large, and the aerosol particles produced during atomization have a large diameter range and uneven distribution, resulting in The heat is more, it is easy to cause the liquid to be atomized to evaporate

When the liquid to be atomized is a drug solvent, there will be a problem of drug precipitation

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