| 摘要 |
PROBLEM TO BE SOLVED: To provide a refrigerating cycle capable of reducing labor and cost required for overall building up, installation of each equipment and piping or the like and of reducing the entire occupation space as much as possible and to provide an expansion valve used for the refrigerating cycle. SOLUTION: The refrigerating cycle includes a compressor, a condenser, an evaporator, an internal heat exchanger and the expansion valve 112, and in the internal heat exchanger, heat exchange is performed between a high-temperature refrigerant led from the condenser to the expansion valve 112 and a low-temperature refrigerant led from the evaporator to the suction side of the compressor. A high-temperature refrigerant conduit 11 for introducing the high-temperature refrigerant from the internal heat exchanger to the inside of the expansion valve 112 and a low-temperature refrigerant conduit 12 for introducing the low-temperature refrigerant from the evaporator to the internal heat exchanger are connected to a piping connection flange 50B mounted to the expansion valve 112. Heat exchange passages 70A, 70B for making the high-temperature refrigerant and/or the low-temperature refrigerant flow are provided in the flange 50B, so as to make the flange 50B function as the internal heat exchanger. COPYRIGHT: (C)2010,JPO&INPIT |
