Patent ID: 7251949

Claim:
A refrigerant system comprising: a heat insulating housing provided with an accommodating space inside, and a refrigeration unit attached to a lower portion of said heat insulating housing, wherein a compressor, a restriction means, an evaporator accommodated in an insulation case, and an internal heat exchanger placed within a wall of the insulating case are disposed on a unit base, and a refrigeration circuit is formed by sequentially connecting said compressor, said gas cooler, said internal heat exchanger, said restriction means and said evaporator, wherein said gas cooler and said insulating case are disposed so that air heat-exchanged by said gas cooler moves toward said heat insulating case, and an air passage is provided between said unit base and said heat insulating case by a plurality of supporting columns on the unit base at intervals and on which the heat insulating case is set whereby air heat exchanged by said gas cooler is passed through said air passage to be discharged outside.