| 摘要 |
PROBLEM TO BE SOLVED: To prevent an expander from being rotated and driven at a high speed when an operation is suspended.SOLUTION: This refrigerating device includes a refrigerant circuit (11), wherein a compressor (20) and the expander (30) generating motive power by expanding a refrigerant are connected to execute a refrigerating cycle. This refrigerating device further includes a compressor control section (111) and an expander control section (112) for increasing a ratio of rotational frequency of the expander (30) to that of the compressor (20) by decreasing the rotational frequency of the compressor (20) and increasing the rotational frequency of the expander (30), when an operation suspension signal is output while in operation. |
