| 摘要 |
<P>PROBLEM TO BE SOLVED: To speedily and securely determine insufficient lubricating oil supply to any communication path for lubricating oil supply from an oil reservoir of a compressor to a fluid machine. <P>SOLUTION: A refrigeration apparatus with communication paths (48, 48a, and 48b) for supplying lubricating oil in oil reservoir (27, 67) of compressors (20, 60) to fluid machines (30, 60) is provided with fluid temperature detection parts (56, 56a, and 56b) which detect the temperatures of fluids flowing in the communication paths (48, 48a, and 48b), refrigerant temperature detection parts (57, 57a, and 57b) which detect the temperatures of refrigerants compressed by compressing mechanisms (24, 64) of the compressors (20, 60), and a determination part (58) which determines insufficient lubricating oil supply from the oil reservoirs (27, 67) to the communication paths (48, 48a, and 48b) based upon temperature differences (ΔT) between the temperatures (Ta) of the fluids detected by the fluid temperature detection parts (56, 56a, and 56b) and temperatures (Tb) of the refrigerants detected by the refrigerant temperature detection parts (57, 57a, and 57b). <P>COPYRIGHT: (C)2013,JPO&INPIT |
