| Summary: | 碩士 === 國立高雄應用科技大學 === 機械與精密工程研究所 === 104 === This study is mainly aimed to experimentally investigate the additive-manufactured (AM) sprayers in reference to commercial ink cartridges and piezoelectric sprayers nowadays. The porous structures inside the sprayers were fabricated by fused deposition method (FDM) to analyze the effect of structures on spraying of water.While AM porous structures are mostly applied to bone modeling, it was explored for storage properties of liquid (water) in this study to replace conventional sponge. The sprayer consisted of many components including such a porous structure, which is termed as sponge-like structure.
Unlike irregular pore sizes of sponges, the AM sponge-like structures can be designed with a feasible density gradient of the pores to have desirable structure porosity and fluid storage by considering both the capillary force and contact angle. It was experimentally found that AM (i.e., 3D printing) speed needed to be adjusted to structural geometry with the line width nearby the size of printer nozzle to yield the minimum error of FDM fabrication, thereby reaching optimal design of sprayers with preferable capability of fluid storage.
In summary, we successfully fabricated AM sprayers that were mainly composed of AM porous structures and one piezoelectric atomizer The effectiveness of water spray in experiments were greater than 92%, as being higher than that of conventional ones.
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