二氧化碳渦卷式壓縮機渦片尺寸的分析與設計

Abstract

在環保因素的考量之下，自然冷媒應用在壓縮機上將會是未來發展的趨勢。在本論文中，採用不可燃且無毒性之二氧化碳自然冷媒，結合高效率、低噪音、低振動之渦卷式壓縮機，來作一分析與設計。由於二氧化碳之低臨界溫度與高臨界壓力之特性，使得壓縮機之工作壓力會較目前使用之冷媒的壓縮機高許多，因此利用工研院能資所自行開發之『渦卷式壓縮機之性能模擬軟體』來模擬分析壓縮機之性能效率，再加上有限元素分析針對渦卷葉片尺寸強度作分析設計，來作為新設計上之指標。依據分析的結果，由於使用二氧化碳時，壓縮機之壓縮壓力差太大，而易造成渦卷之損壞，因此在論文之最後並針對兩段式渦卷式壓縮機作一專利回顧，並提出一概念設計。

The nature refrigerants will be a trend in the future under the considerations of environmental protection. In this thesis, an non-flammable and non-toxic nature refrigerant, CO2, and a scroll compressor which has some advantages such like high efficiency, low noise, and low vibration, are taken into analysis and design. The working pressure of scroll compressor using CO2 is much higher than using present refrigerants for the low critical temperature and high critical pressure properties of CO2, so the performance of scroll compressor where the “Performance Simulation Program of Scroll Compressor” offered from the Industrial Technology Research Institute, and it also considers the finite element analysis is used to analyze the strength of scroll wrap to design the dimensions of scroll wrap. The pressure difference of compressor using CO2 is so great to make scrolls damage easily, therefore, there are descriptions about patents of the two-stage compression type of scroll compressor, and proposes a concept design in the end of this thesis.