Image processing analyses of the factors influencing the angle of an atomizer spray cone

ZHANG Simin; WANG Guolei; YU Qiankun; HUA Xiaotong; SONG Libin; CHEN Ken

doi:10.16511/j.cnki.qhdxxb.2018.25.047

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Journal of Tsinghua University(Science and Technology) ›› 2019, Vol. 59 ›› Issue (2) : 103-110. DOI: 10.16511/j.cnki.qhdxxb.2018.25.047

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Image processing analyses of the factors influencing the angle of an atomizer spray cone

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Abstract

The relationship between the spray process parameters and the atomizer spray cone angle must be well understood for establishing accurate spray gun models. However, traditional experimental methods cannot easily provide sufficient experimental data, such as measurements of the spray pattern size. This paper presents a method to measure the atomizer cone angle by using image processing to identify the edges on an atomizer cone image. This method was then used in an experimental study of the relationship between the shaping air pressure, the atomizing air pressure and the flow rate on the atomizer cone angle. The results show that the shaping air pressure is positively correlated with the angle of the long axis of the atomizer cone and negatively correlated with the angle of the short axis of the atomizer cone. The atomizing air pressure is positively correlated with the angles of the long and short axes of the atomizer cone and the fluid flow rate. The atomizing air pressure is also coupled with the shaping air pressure. The fluid flow rate has a relatively small effect on the atomizer cone angle.

Key words

air spray / spray gun model / angel of atomizer cone / shaping air pressure / atomizing air pressure / image processing

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ZHANG Simin, WANG Guolei, YU Qiankun, HUA Xiaotong, SONG Libin, CHEN Ken. Image processing analyses of the factors influencing the angle of an atomizer spray cone[J]. Journal of Tsinghua University(Science and Technology). 2019, 59(2): 103-110 https://doi.org/10.16511/j.cnki.qhdxxb.2018.25.047

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