112 CO2密閉型ロータリ圧縮機の性能と信頼性について(熱移動I)

概要

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Carbon dioxide is nontoxic, inflammable, and cheap refrigerant, and worldwide research is done in various refrigerating and air-conditioning applications. But working pressure of carbon dioxide is very high. Therefore development of the compressor which can operate with high efficiency under such condition, has been expected. We developed a prototype CO2 hermetic compressor, which is able to use in carbon dioxide refrigerating systems for practical use. The compressor has two rolling pistons, and it leads to low-vibration, low-noise. In addition, two-stage compression with two cylinders is adopted, because pressure deference is too large to compress in one stage. In first stage, the suction gas is raised up to about 5-6MPa (what we call intermediate pressure). And inner pressure of the shell case is intermediate pressure to minimize gas leakage between compressing rooms and inner space of shell case. As a result, the compressor achieved high-efficiency and high-reliability by these technology.
社団法人日本機械学会の論文
2000-06-23