| 摘要 |
The objective of the present invention is to prevent uneven flow of refrigerant in the lowest-level refrigerant path in an outdoor heat exchanger. Three or more levels of refrigerant paths (P1, P2, P3, P4) are formed so as to be connected in parallel and arranged vertically in an outdoor heat exchanger (23) in a refrigerant circuit (20) in which an R32 refrigerant circulates. The wind speed of the air supplied to the outdoor heat exchanger (23) is essentially uniform in the vertical direction of heat transfer fins (51). The path length of the lowest-level path, that is, the fourth refrigerant path (P4), is longer than the path length of the second and third refrigerant paths (P2, P3), which does not include the first and fourth refrigerant paths (P1, P4). |
