| 摘要 |
PROBLEM TO BE SOLVED: To provide a refrigeration device capable of keeping each of internal temperatures with high accuracy in cooling or warming a plurality of compartments.SOLUTION: A refrigeration device includes a refrigerant circuit (52) having a first flow channel (R1) including a first route (LH1) for guiding a gas refrigerant from a compressor (1) to a first internal heat exchanger (5A), a second route (LH2) for guiding a liquid refrigerant from the first internal heat exchanger to an external heat exchanger (3), and a third route (LH3) for guiding a supercooled refrigerant from the external heat exchanger to a second internal heat exchanger (5B), a second flow channel (R2) including a fourth route (LH4) for branching and introducing the gas refrigerant from the compressor to the first and second internal heat exchangers, and a fifth route (LH5) for guiding the liquid refrigerant from the first and second internal heat exchangers to the external heat exchanger, and a third flow channel (R3) including a sixth pipe (LH6) for guiding the gas refrigerant from the compressor to the external heat exchanger and a seventh pipe (LH7) for branching and introducing the liquid refrigerant from the external heat exchanger to the first and second internal heat exchangers; and a flow channel switching portion (RK1) for selectively switching the first to third flow channels.SELECTED DRAWING: Figure 1 |
