Medium-frequency ultrasonic atomization spray nozzle for Gaussian complex angle and design method of medium-frequency ultrasonic atomization spray nozzle

Abstract

The invention discloses a design method of a medium-frequency ultrasonic atomization spray nozzle for a Gaussian complex angle and the medium-frequency ultrasonic atomization spray nozzle for the Gaussian complex angle designed according to the method. The design method concretely comprises the following steps that the corresponding cross section variation rule is derived according to the specified requirements of the constant strain, an amplitude-change pole part of the ultrasonic atomization spray nozzle is designed, then, an energy converter part matched with the amplitude-change pole is designed, and finally, the ultrasonic atomization spray nozzle with uniform stress distribution and high vibration amplitude can be obtained. The invention also discloses the medium-frequency ultrasonic atomization spray nozzle for the Gaussian complex angle, and the medium-frequency ultrasonic atomization spray nozzle consists of the energy converter and the amplitude-change pole of the Gaussian complex angle. The stress distribution in the axial direction of the pole is uniform, i.e. no maximum value exists, so greater vibration amplitude can be obtained from the output end along with the shape factor increase of the amplitude-change pole.

Description

technical field [0001] The invention relates to an ultrasonic atomizer used in the field of industry and agriculture, and in particular relates to a structural design method of the ultrasonic atomizer and an ultrasonic atomization nozzle adopting the design method. Background technique [0002] Ultrasonic atomization refers to the use of high-frequency electronic vibration, through the high-frequency resonance of the ceramic atomization sheet, to break up the molecular structure of liquid water to produce natural and elegant water mist, without heating or adding any chemical reagents. At present, the main shapes of the horn of the ultrasonic atomizing nozzle are conical, exponential, catenary, Bezier and stepped. The conical horn has a simple structure and is easy to design and manufacture, but its magnification factor is low; the exponential and catenary horns have smooth stress distribution, but its magnification factor is low; the stepped horn has a high magnification fac...

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Problems solved by technology

[0006] The invention provides a design method of a Gaussian composite angle intermediate frequency ultrasonic atomizing nozzle and a Gaussian composite angle intermediate frequency ultrasonic atomizing nozzle designed according to the method to solve the poor reliability of the existing high frequency ultrasonic atomizer , low power, poor working condition stability and large droplets of low-frequency ultrasonic atomizer (droplet diameter between 30μm and 100μm); the stepped horn has a high amplification factor, but also has a high stress concentration, which is easy to Broken and so on

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