| 摘要 |
PROBLEM TO BE SOLVED: To store a refrigerant in an outdoor unit while an operation efficiency and a comfort are maintained in a refrigerating device having the outdoor unit and an indoor unit connected together through a connecting piping. SOLUTION: A bridge circuit 11 having four check valves 31 to 34 is provided in the upstream side of a receiver 10 disposed upstream a motor operated expansion valve 7. A degassing pipe 12 for connecting the receiver 10 to a piping 24 downstream the motor-operated expansion valve 7 is provided. A degassing valve 13 is provided in the degassing pipe 12. Upon stop of an operation, the degassing valve 13 is opened to gradually close the motor operated expansion valve 7. With the lapse of a prescribed time after the motor operated expansion valve 7 is completely closed, the operation of a compressor 4 is stopped to close the degassing valve 13. |
