| 摘要 |
<p>A refrigerating device, wherein an oil return mechanism (Z) returning a refrigerating machine oil separated from suction gas refrigerant preferentially to a compressor (1A) of a minimum capacity among compressors (1A, 1B) having the capacities different from each other is provided in a suction line (X) of the compressors (1A, 1B), and an oil return passage (117) returning the refrigerating machine oil separated in an oil separator (116) installed in a delivery pipe (115) of the compressors (1A, 1B) to the compressor (1A) of the minimum capacity among the compressors (1A, 1B, ---) is provided, whereby the refrigerating machine oil separated in the oil separator (116) and the refrigerating machine oil in the suction gas refrigerant are returned sequentially to the compressor (1B) having a low dome internal pressure after they return preferentially to the compressor (1A) of the minimum capacity.</p> |
