REFRIGERANT CIRCUIT DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a refrigerant circuit device which can perform a cooling/heating operation corresponding to the size of a cooling request and a heating request and reducing power consumption.

SOLUTION: The refrigerant circuit device includes: a main route 20 provided with an intra-container heat exchanger 24, a compressor 21 and an extra-container heat exchanger 22; a high pressure refrigerant introduction route 30 for introducing a refrigerant compressed in the compressor 21 and supplying it to the intra-container heat exchanger 24; a heat radiation route 40 for supplying the refrigerant condensed in the intra-container heat exchanger 24 to a gas cooler 42; and a return route 50 for returning the refrigerant from the gas cooler 42 to the main route 20. The heat radiation route 40 includes: a heat radiation valve 441 disposed in the middle of heat radiation piping 41 from the intra-container heat exchanger 24 to the gas cooler 42; a branch route 45 connected to branch from a branching point more on the upstream side than the heat radiation valve 441 and merge at a merging point on the downstream side; and a branch expansion unit 47 disposed in the branch route 45, for heat-insulating and expanding the refrigerant passing through the branch route 45.

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