本論文詳細闡述了一款新型導氣機構的開發過程。此機構旨在配合超音波霧化噴頭使用，透過內部旋轉盤的精密控制，將單一氣源分流為兩股流量呈反向變化的氣流，以導引霧化液滴形成均勻的扇形噴幅。初版採用扇形孔轉盤的設計，雖能實現氣流切換，卻因流量分布不均，導致噴塗效果呈現「中間稀薄、兩側過濃」的問題。為解決此缺陷，本研究透過計算流體力學（CFD）模擬分析，並提出將轉盤流道改為「狹長孔」的改良設計。模擬結果顯示，新設計能產生線性的流量增減變化，預期可大幅改善液滴導引的均勻性。為驗證改良設計的實際效能，本報告亦涵蓋了以隔熱材料於玻璃基板上進行噴塗的功能性測試過程與結果，並以紅外線阻隔率90%~95%及可見光穿透率大於70%作為最終的效能驗證標準。

This study presents the development and optimization of a novel "Gas-Guiding Mechanism" designed to improve the uniformity and coverage of high-precision surface coatings using ultrasonic atomization. Traditionally, single-point spray nozzles struggle with wide-area consistency due to the natural diffusion of the spray plume. Through Computational Fluid Dynamics (CFD) utilizing the standard k-ε turbulence model and empirical testing, the initial internal rotor design was modified from fan-shaped openings to elongated slotted holes. This geometric optimization successfully resolved non-uniform flow distribution issues—specifically central flow deficits and edge accumulation—by achieving a smooth, linear airflow modulation. The optimized system was validated using a liquid thermal insulation coating on glass substrates. Results demonstrated excellent large-area deposition and seamless multi-module scalability, proving the system's capability to meet stringent optical performance standards, including a 90%–95% infrared (IR) blocking rate and over 70% visible light transmission (VLT).

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