振幅影響霧化之研究

楊允睿

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College of Engineering > Graduate Institute of Mechanical Engineering
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振幅影響霧化之研究

Study on Vibration Amplitude Influential to Atomization

楊允睿 , Masters　　Advisor：丁鏞　　

繁體中文

振幅；壓電振動子；超音波霧化器； Amplitude ； piezoelectric vibrator ； ultrasonic atomization

Abstract │ Reference (45) │ Altmetrics

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The motivation of this thesis is to design a hollow cylindrical atomizer, with low frequency and large amplitude to generate the mechanism to achieve ultrasonic atomization and meet the target of industrial printing applications. The piezoelectric material is attached to a steel tube, the entire structure is fixed at both two end points, by choosing the appropriate model can produce maximum deformation near the middle of the steel tube where a small hole is designed as a liquid outlet and atomization will occur at the surface around the hole.
Finite element method by using ANSYS is carried out to accomplish modal analysis and harmonic analysis of the atomizer. A set of atomization measurement system is built including high-speed camera and imaging processing by use of ImageJ software that can provide the information of particle size and distribution. From experiment, it is found nearly 89% of atomized particles sizes fits 20~60μm for the requirement of industrial printing application. Another focus of this study is to evaluate the influence of vibration amplitude to form atomization. Water is selected in experiment. It is found that the diameter of atomization particle is approximately proportional to the vibration amplitude.

Reference ( 45 ) 〈TOP〉

[1] L. Parrini,’’ New Methodology for the Design of Advanced Ultrasonic Transducers for Welding Devices,’’ IEEE Ultrasonic Symposium, Vol 1, pp. 699-704, 2000.
連結：
[2] S. C. Tsai, Y. L. Song, T. K. Tseng, Y. F. Chou, W. J. Chen, “High Frequency Silicon Based Ultrasonic Nozzle Using Multiple Fourier Horns”, IEEE Transactions on Ultrasonic, Ferroelectrics, and Frequency Control, Vol. 51, pp. 277-285, 2004.
連結：
[3] A. Iula, et all, ‘‘A Power Ultrasonic Actuator Based on a Displacement Amplifier Vibrating in Flexural Mode’’, IEEE Ultrasonic Symposium, Vol 3, pp. 1534-1537, 2005.
連結：
[4] Ning Wang, Jia Fang, Xiaodan Zhang, Guangcai Wang, Liguo Wang, Caichi Liu, Huixu Zhao, Ze Chen, Xin Liang Chen, Jian Sun, Ying Zhao, ‘‘Combined SiO Antireflective Coatings with MOCVD-ZnO:B to Improve Light Absorption in Thin-film Solar Cells’’ Solar Energy Materials and Solar Cells, Vol 130, pp. 420-425, 2014.
連結：
[5] A. B. D. Nandiyanto, K. Okuyama, “Progress in Developing Spray-drying Methods for the Production of Controlled Morphology Particles: From the Nanometer to Submicrometer Size Ranges,” Advanced Powder Technology, Vol. 22, Issue 1, pp. 1-19, 2011.
連結：

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