| 摘要 |
A refrigerant system 1 D comprises a heat insulating housing 3 provided with an accommodating space inside and a refrigeration unit 9 attached to a lower portion of the heat insulating housing 3, in which a compressor 5, a gas cooler 6, an internal heat exchanger 10, a restriction means 16 and an evaporator 8 accommodated in a heat insulating case 7 A are disposed on a unit base 4. The gas cooler 6 and the heat insulating case 7 A are disposed so that air heat-exchanged by the gas cooler 6 moves toward the heat insulating case 7 A, an air passage T is provided between the unit base 4 and the heat insulating case 7 A, the air heat-exchanged by the gas cooler 6 is passed through the air passage T to be discharged outside, and the internal heat exchanger 10 is disposed in such a manner that it is embedded in a heat insulating material layer 7 C provided around the heat insulating case 7 A to be provided with a heat insulation property. Accordingly, exhaust heat-exchanged by the gas cooler is discharged outside without stagnation, and increases in an overload and operation power of the compressor are suppressed and the durability of the compressor can be improved. Further, the heat-exchanging efficiency of the internal heat exchanger can be improved and the generation of condensation on a surface of an outer side tube of the internal heat exchanger can be prevented.
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