| 摘要 |
PROBLEM TO BE SOLVED: To perform sufficient oil management to each of compressors in a refrigerating device comprising the plurality of compressors connected in parallel with each other. SOLUTION: This refrigerating device 1 comprises the first to third three compressors 11a, 11b, 11c connected in parallel with each other, and an oil separator for separating refrigerating machine oil from discharged refrigerants of the compressors 11a, 11b, 11c. A suction main pipe 55 in which sucked refrigerants of the compressors 11a, 11b, 11c flow, is provided with a main curved portion 101 and a main branch portion 102 at a downstream side of a connecting portion of an oil returning pipe 71 for returning the refrigerating machine oil of the oil separator. The suction main pipe 55 is branched to a first suction branch pipe 61a of the first compressor 11a and a suction connecting pipe 56 at the main branch portion 102. At the main branch portion 102, the first suction branch pipe 61a is positioned at a lowermost portion and an outermost peripheral portion with respect to the direction of radius of curvature of the main curved portion 101. COPYRIGHT: (C)2008,JPO&INPIT
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