| 摘要 |
PROBLEM TO BE SOLVED: To provide a refrigeration cycle device having an improved defrosting performance.SOLUTION: A refrigeration cycle device includes: a heat pump circuit 10 in which a compressor 1, a radiator 2, a first pressure reducing means 3 and an evaporator 4 are connected by piping in an annular shape, and in which a refrigerant circulates; a heating medium circuit 40 in which a circulation pump 13, the radiator 2 and heat load terminals (17a,17b) are connected by piping in an annular shape, and in which a heating medium circulates; and a control device 50. As a second pressure reducing means (8,9) are provided in piping between an inlet of the evaporator 4 and an inlet of the compressor 1 in the heat pump circuit 10, defrosting performance can be improved by making differential pressure before and after the second pressure reducing means (8,9) large, and by increasing a refrigerant temperature between the first pressure reducing means 3 and the second pressure reducing means (8,9). |
