Evaluation of HFC Rotary Compressor and System (Improvement of Lubricating Ability and Capillary Tube Clogging)

摘要

In the process of developing refrigerating systems for alternative refrigerants, two problems must be solved. First, chlorine-free refrigerants cause a decrease in lubricating ability. Second, impurities and decomposition of refrigerant oils cause capillary tube clogging. Among all types of compressors, rotary compressors face the most serious problems. Therefore, the sliding parts must be reinforced to reduce lubricating capacity. Also, either the impurity content must be decreased, or refrigerant oil, which does not clog easily, must be selected. In this paper, the authors investigated using ether as the refrigerant oil, and a swing compressor instead of a rotary compressor. As a result, the problems were solved.