具齒厚及齒高變化微型渦卷式壓縮機之轉子幾何與動平衡設計;Design of Rotor Geometry and Dynamic Balancing for Micro Scroll Compressors with Variable Tooth Thickness and Height

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题名:	具齒厚及齒高變化微型渦卷式壓縮機之轉子幾何與動平衡設計;Design of Rotor Geometry and Dynamic Balancing for Micro Scroll Compressors with Variable Tooth Thickness and Height
作者:	許嘉紘;HSU, CHIA-HUNG
贡献者:	機械工程學系
关键词:	渦卷式壓縮機;渦卷轉子;變齒厚;變齒高;動平衡;動載分析;Scroll compressor;Scroll rotors;Variable tooth thickness;Variable tooth height;Dynamic balancing;Dynamic load analysis
日期:	2024-08-14
上传时间:	2024-10-09 17:26:09 (UTC+8)
出版者:	國立中央大學
摘要:	渦卷式壓縮機是一種高效的壓縮機型，以其卓越的運行效率、低振動及噪音、高度的可靠性和長久的使用壽命而受到廣泛的應用。其核心部件是一對互相嚙合的動、靜渦卷轉子，轉子之精確幾何設計對於整體壓縮機性能至關重要。本研究介紹了一種新穎的渦卷轉子設計方法，該方法針對轉子齒高和齒厚進行變化，並應用可變基圓漸開線技術來達成齒形的精確設計和多段圓弧的齒頭修正，以優化轉子的性能。為了驗證此設計方法對於提升性能的影響，進行了一系列的線形參數比較分析。研究結果顯示，這種變齒厚的設計顯著改善了壓縮機的包覆體積、底盤直徑及壓縮比，而齒高的變化則進一步提升了壓縮比。將這些新設計的轉子與一般渦卷轉子進行性能比較，結果顯示在相同條件下，新設計的轉子在效率和體積上顯示出顯著的優勢，並且實現了壓縮機的整體小型化。此外，本文建立了一套渦卷壓縮機動平衡計算方法和設計配重塊的模型流程通過整合SOLIDWORKS和ADAMS軟體建立的動態模擬模型，進行了包括時域和頻率域的詳細動力學分析。此模擬不僅允許在設計和製造階段之前對壓縮機的動態性能和動平衡進行校正，也改進了新型渦卷壓縮機的設計和改進。此外，分析改進後的壓縮機動態特性，包括整體慣性力和慣性力矩的時域及頻域特性，確認了所開發的動平衡設計方法能有效地改善渦卷壓縮機的動載特性，此發現不僅展示了微型渦卷壓縮機設計的創新性，也突顯了通過精確模擬和動平衡校正來節省研發成本的潛力。透過這些創新方法，能夠在壓縮機設計階段前期即確認設計的可行性和效能，從而減少後期大規模生產中的風險和成本。;The scroll compressor, renowned for its exceptional operational efficiency, low vibration and noise levels, high reliability, and extended lifespan, is widely utilized across various applications. The core components of this compressor are a pair of intermeshing orbiting and fixed scroll rotors, where precise geometric design of the rotors is crucial for overall compressor performance. This study introduces an innovative scroll rotor design method that varies the rotor tooth height and thickness, applying variable base circle involute technology to achieve precise tooth profile design and multi-arc tooth head correction, optimizing rotor performance. To validate the impact of this design method on performance enhancement, a series of geometric parameter comparative analyses were conducted. Results indicate that the variable tooth thickness design significantly improves the compressor′s swept volume, base diameter, and compression ratio, while changes in tooth height further enhance the compression ratio. Performance comparisons between these newly designed rotors and conventional scroll rotors reveal that, under identical conditions, the new rotors exhibit substantial advantages in efficiency and volume, achieving overall miniaturization of the compressor. Furthermore, this paper establishes a set of dynamic balance calculation methods for scroll compressors and a model process for designing counterweights. By integrating SOLIDWORKS and ADAMS software to create a dynamic simulation model, detailed dynamic analysis in both time and frequency domains was conducted. This simulation not only allows for dynamic performance and balance correction of the compressor before the design and manufacturing stages but also improves the design and refinement of new scroll compressors. The analysis of the improved compressor′s dynamic characteristics, including the time and frequency domain characteristics of overall inertial forces and moments, confirms that the developed dynamic balance design method effectively enhances the dynamic load characteristics of the scroll compressor. This finding not only demonstrates the innovation in micro-scroll compressor design but also highlights the potential for cost savings in R&D through precise simulation and dynamic balance correction. Through these innovative methods, the feasibility and performance of the design can be confirmed early in the compressor design stage, thereby reducing risks and costs in subsequent mass production.
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