| 摘要 |
PROBLEM TO BE SOLVED: To provide a refrigeration cycle of high reliability capable of preventing the seizure of a compressor even in poor lubricating sate and high load state of the compressor in the refrigeration cycle. SOLUTION: In this refrigeration cycle comprising the compressor 1 for compressing and discharging a refrigerant, and having a refrigerant oil sealed in a refrigerant circulation passage for lubricating the compressor 1, fine particles 17 of approximately circular cross-section are mixed in the refrigerant circulating passage. Sliding faces of the compressor can be prevented from being directly kept into contact with each other by the fine particles 17 placed between the sliding faces. Further as the fine particles have the approximately circular cross-section, the fine particles 17 are rolled in relative movement of the sliding faces opposite to each other, thus the rolling friction is achieved. Accordingly, a coefficient of friction of a sliding part of the compressor 1 can be reduced. COPYRIGHT: (C)2006,JPO&NCIPI
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