| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a cooling machine and a refrigeration cycle device for improving performance of an evaporator by lowering a target SH, ensuring reliability, and preventing an increase in cost. <P>SOLUTION: In the cooling machine 10 configuring the refrigeration cycle device by being connected with a compressor 3 and a condenser 4 by refrigerant pipes 7, 8, the cooling machine 10 includes an expansion valve 12 and the evaporator 13. The evaporator 13 has a distributor 14 for branching an inlet of the evaporator 13 into a plurality of paths 15a-15d, capillary tubes 16s-16d, a header 17 for collecting a plurality of evaporator path outlets 18a-18d of the evaporator 13, an evaporator outlet temperature sensor 12a, and an equivalent evaporation temperature detecting means 12b. The capillary tube 16a of one of the plurality of paths 15a-15d has flow channel resistance larger than those of the capillary tubes 16b-16c of the other paths, and an opening of the expansion valve 12 is controlled so that an evaporator superheating degree determined from the an evaporator outlet temperature detected by the evaporator outlet temperature sensor 12 and an evaporation temperature detected by the equivalent evaporation temperature detecting means 12b, reaches a predetermined target value. <P>COPYRIGHT: (C)2012,JPO&INPIT |
