| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem in supercooling a refrigerant flowed out of a gas cooler by a refrigerant flowed out of an evaporator in a refrigeration device in which a high pressure side becomes supercritical pressure.SOLUTION: A refrigeration device includes: a heat exchanger 29 provided on a downstream side of a gas cooler 28 and an upstream side of an electric expansion valve 33; a bypass circuit 60 connected in parallel with respect to a series circuit of an electric expansion valve 39 and an evaporator 41; an electric expansion valve 65 provided in the bypass circuit; and a control device 57. The refrigeration device flows a refrigerant flowing out of the evaporator and sucked into a compressor 11 into a first flow passage 29A of the heat exchanger 29, and flows a refrigerant flowing out of the gas cooler and flowing into the electric expansion valve 33 into a second flow passage 29B of the heat exchanger 29. Thereby, the refrigerant flowing in the second flow passage 29B of the heat exchanger 29 is supercooled by the refrigerant flowing in th first flow passage 29A of the heat exchanger 29. |
