PURPOSE: To provide a refrigerating device in which the compressor can be cooled smoothly by a liquid injection method and can be prevented from supercooling even when the outside-air temperature changes.
CONSTITUTION: A compressor A, condenser B, liquid receiver C, expansion valve D, and evaporator E are connected in a loop in sequence. In addition there is provided a liquid injection circuit for supplying liquid refrigerant from the liquid receiver C to the compressor A. In this liquid injection circuit there are provided a capillary tube J and next to the capillary tube J and on the side of the liquid receiver C a thermovalve TV. The thermovalve TV controls the amount of the injection on the basis of the discharge temperature of the compressor A.
ISHIGAMI SHINICHI
YAMAGATA KAZUO
ARAI TAKASHI
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