PURPOSE: To improve productivity through the standardization of a compressor unit and the simplification of the structure of a common bed for the unit, to shorten a time necessary for assembling and obtain an inexpensive product by obtaining the compressor unit in which a compressor and the standard accessories of the compressor are unified on a single frame.

CONSTITUTION: A refrigerating machine unit is constituted of a common bed 1, to which a water-cooled condenser 2 is attached, and a compressor unit 7, consisting of a single frame 6, into which 3 sets of compressors 3 and the standard accessories such as oil separators 4 and overcoolers 5 are incorporated, and piping parts connecting between respective equipments and being mounted thereon. Common equipments such as an oil cooler 8, an oil tank 9 and an electric parts box 10 are attached to the common bed 1. Accordingly productivity may be improved by the standardized production of the compressor unit and the simplification of the structure of the common bed whereby an inexpensive product may be obtained.