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Theoretical calculations and experimental verification for the pumping effect caused by the dynamic micro-tapered angle

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Abstract

The atomizer with micro cone apertures has advantages of ultra-fine atomized droplets, low power consumption and low temperature rise. The current research of this kind of atomizer mainly focuses on the performance and its application while there is less research of the principle of the atomization. Under the analysis of the dispenser and its micro-tapered aperture’s deformation, the volume changes during the deformation and vibration of the micro-tapered aperture on the dispenser are calculated by coordinate transformation. Based on the characters of the flow resistance in a cone aperture, it is found that the dynamic cone angle results from periodical changes of the volume of the micro-tapered aperture of the atomizer and this change drives one-way flows. Besides, an experimental atomization platform is established to measure the atomization rates with different resonance frequencies of the cone aperture atomizer. The atomization performances of cone aperture and straight aperture atomizers are also measured. The experimental results show the existence of the pumping effect of the dynamic tapered angle. This effect is usually observed in industries that require low dispersion and micro- and nanoscale grain sizes, such as during production of high-pressure nozzles and inhalation therapy. Strategies to minimize the pumping effect of the dynamic cone angle or improve future designs are important concerns. This research proposes that dynamic micro-tapered angle is an important cause of atomization of the atomizer with micro cone apertures.

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References

  1. CHETAN M, NEGOIAS A. New approaches to nebulizer drug delivery[C]//Advanced Topics in Electrical Engineering (ATEE); 7th International Symposium on, Bucharest, Romania, 2011: 1–4.

    Google Scholar 

  2. FDA U. Reviewer guidance for nebulizers, metered dose inhalers, spacers and actuators[EB/OL]. (2014). http://www.fda.gov/medicaldevices/deviceregulationandguidance/guidancedocuments/u cm081282.htm.

    Google Scholar 

  3. FORREST S R. The path to ubiquitous and low-cost organic electronic appliances on plastic[J]. Nature, 2004, 428(6986): 911–918.

    Article  Google Scholar 

  4. AHMAD Z, HUANG J, THIAN E S, et al. Freeform fabrication of nano-biomaterials using 3D electrohydrodynamic print-patterning [J]. Journal of Biomedical Nanotechnology, 2008, 4(2): 185–195.

    Google Scholar 

  5. CHOI K H, ALI J, NA K-H. Fabrication of graphenenanoflake/ poly(4-vinylphenol) polymer nanocomposite thin film by electrohydrodynamic atomization and its application as flexible resistive switching device[J]. Physica B: Condensed Matter, 2015, 475: 148–155.

    Article  Google Scholar 

  6. MEMARZADEH K, SHARILI A S, HUANG J, et al. Nanoparticulate zinc oxide as a coating material for orthopedic and dental implants[J]. Journal of Biomedical Materials Research Part A, 2015, 103(3): 981–989.

    Article  Google Scholar 

  7. LEE S H, HENG D, NG W K, et al. Nano spray drying: a novel method for preparing protein nanoparticles for protein therapy[J]. International Journal of Pharmaceutics, 2011, 403(1–2): 192–200.

    Article  Google Scholar 

  8. QUISPE-CONDORI S, SALDAÑA M D A, TEMELLI F. Microencapsulation of flax oil with zein using spray and freeze drying[J]. LWT-Food Science and Technology, 2011, 44(9): 1880–1887.

    Article  Google Scholar 

  9. NANDIYANTO A B D, OKUYAMA K. Progress in developing spray-drying methods for the production of controlled morphology particles: From the nanometer to submicrometer size ranges[J]. Advanced Powder Technology, 2011, 22(1): 1–19.

    Article  Google Scholar 

  10. CARNÉ-SÁNCHEZ A, IMAZ I, CANO-SARABIA M, et al. A spray-drying strategy for synthesis of nanoscale metal–organic frameworks and their assembly into hollow superstructures[J]. Nature Chemistry, 2013, 5(3): 203–211.

    Article  Google Scholar 

  11. SANTANGELO P E, JACOBS B C, REN N, et al. Suppression effectiveness of water-mist sprays on accelerated wood-crib fires[J]. Fire Safety Journal, 2014, 70: 98–111.

    Article  Google Scholar 

  12. JENFT A, COLLIN A, BOULET P, et al. Experimental and numerical study of pool fire suppression using water mist[J]. Fire Safety Journal, 2014, 67: 1–12.

    Article  Google Scholar 

  13. ZHUO J, YINSHUI L, XUFENG Z, et al. A portable piston-type water mist fire extinguisher for spacecraft[J]. Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering, 2015, 229(1): 52–63.

    Article  Google Scholar 

  14. DENG Dong, ZHOU Hua, YANG Huayong. Emulational and experimental study of new water mist spray nozzle for fire suppression[J]. Chinese Journal of Mechanical Engineering, 2006, 42(12): 122–127. (in Chinese)

    Article  Google Scholar 

  15. LU C F, FU C C, YANG J C, et al. 4A-3 traveling wave driven micro-dispenser for CPU cooling application[C]//2006 IEEE Ultrasonics Symposium, Vancouver, BC: IEEE, 2006: 54–57.

    Chapter  Google Scholar 

  16. HOU Y, TAO Y, HUAI X. The effects of micro-structured surfaces on multi-nozzle spray cooling[J]. Applied Thermal Engineering, 2014, 62(2): 613–621.

    Article  Google Scholar 

  17. NEGEED E-S R, HIDAKA S, KOHNO M, et al. Effect of the surface roughness and oxidation layer on the dynamic behavior of micrometric single water droplets impacting onto heated surfaces[J]. International Journal of Thermal Sciences, 2013, 70: 65–82.

    Article  Google Scholar 

  18. PANÃO M R O, MOREIRA A L N, DURÃO D F G. Thermal-fluid assessment of multijet atomization for spray cooling applications[J]. Energy, 2011, 36(4): 2302–2311.

    Article  Google Scholar 

  19. HEIJ B de, SCHOOT B van der, ROOIJ N F de, et al. Modelling and optimisation of A vaporiser for inhalation drug therapy[C]//Technical Proceedings of the 1999 International Conference on Modeling and Simulation of Microsystems, Puerto Rico, USA: NSTI, 1999: 542–545.

    Google Scholar 

  20. DE HEIJ B, VAN DER SCHOOT B, BO H, et al. Characterisation of a fL droplet generator for inhalation drug therapy[J]. Sensors and Actuators A: Physical, 2000, 85(1–3): 430–434.

    Article  Google Scholar 

  21. PAN C T, SHIEA J, SHEN S C. Fabrication of an integrated piezo-electric micro-nebulizer for biochemical sample analysis[J]. Journal of Micromechanics and Microengineering, 2007, 17(3): 659–669.

    Article  Google Scholar 

  22. MAEHARA N, UEHA S, MORI E. Influence of the vibrating system of a multipinhole-plate ultrasonic nebulizer on its performance[J]. Review of Scientific Instruments, 1986, 57(11): 2870.

    Article  Google Scholar 

  23. MAEHARA N, UEHA S, MORI E. Optimum design procedure for multi-pinhole-plate ultrasonic atomizer[J]. Japanese Journal of Applied Physics, 1987, 26(S1): 215–217.

    Article  Google Scholar 

  24. SHEN S-C, WANG Y-J, CHEN Y-Y. Design and fabrication of medical micro-nebulizer[J]. Sensors and Actuators A: Physical, 2008, 144(1): 135–143.

    Article  MathSciNet  Google Scholar 

  25. SHEN S C. A new cymbal-shaped high power microactuator for nebulizer application[J]. Microelectronic Engineering, 2010, 87(2): 89–97.

    Article  Google Scholar 

  26. LU C, YANG J, FU C. No back-pressure effect micro-dispenser suction pump[C]//2006 International Microsystems, Package, Assembly Conference Taiwan. Taipei: IEEE, 2006: 1–4.

    Google Scholar 

  27. WHITE F M. Fluid mechanics[M]. New York: McGraw-Hill, 2003.

    Google Scholar 

  28. OLSSON A, STEMME G, STEMME E. Numerical and experimental studies of flat-walled diffuser elements for valve-less micropumps[J]. Sensors and Actuators A: Physical, 2000, 84(1–2): 165–175.

    Article  Google Scholar 

  29. ZHANG Jianhui, XIA Qixiao, ZHEN Hong, et al. Flow direction of piezoelectric pump with nozzle/diffuser-elements[J]. Chinese Journal of Mechanical Engineering, 2004, 17(1): 107–109.

    Article  Google Scholar 

Download references

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Authors and Affiliations

  1. College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China

    Yufei Cai & Chunling Zhu

  2. School of Electro-Mechanical Engineering, Guangzhou University, Guangzhou, 510006, China

    Jianhui Zhang

  3. State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China

    Jianhui Zhang & Jun Huang

  4. Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang, 212013, China

    Jun Huang & Feng Jiang

Authors
  1. Yufei Cai
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  2. Jianhui Zhang
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  3. Chunling Zhu
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  4. Jun Huang
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  5. Feng Jiang
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Corresponding author

Correspondence to Jianhui Zhang.

Additional information

Supported by National Natural Science Foundation of China (Grant Nos. 51375227, 91223201)

CAI Yufei, born in 1984, is currently a PhD candidate at College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, China. His research interests include air vehicle environment control and atomization.

ZHANG Jianhui, born in 1963, is currently a professor and a PhD candidate supervisor at School of Electro-Mechanical Engineering, Guangzhou University, China. His research area is mechanical design and its theory, piezoelectric driving.

ZHU Chunling, born in 1968, is currently a professor and a PhD candidate supervisor at College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, China. Her research area is air vehicle environment control and aircraft de-icing/anti-icing calculation and design.

HUANG Jun, born in 1981, is currently a PhD at Research Center of Fluid Machinery Engineering and Technology, China. His research area is piezoelectric driving, fluid solid coupling analysis and multi-field simulations.

JIANG Feng is a master graduate from State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, China. His research area is mechanical design and its theory, piezoelectric driving.

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Cai, Y., Zhang, J., Zhu, C. et al. Theoretical calculations and experimental verification for the pumping effect caused by the dynamic micro-tapered angle. Chin. J. Mech. Eng. 29, 615–623 (2016). https://doi.org/10.3901/CJME.2016.0324.037

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  • DOI: https://doi.org/10.3901/CJME.2016.0324.037

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