| 摘要 |
A refrigeration cycle for air conditioning a vehicle has improved cooling and heating performance. A heat exchanger (100) for exchanging heat between a refrigerant and air outside a vehicle interior is provided with: a first header (140) to which one end of each tube (110) is connected; a second header (150) to which the other ends of the tubes are connected; and a first pipe joint (160) and a second pipe joint (170). The insides of both the first header and the second header are partitioned by partition means (141, 151), respectively. The tubes are divided into tube groups according to the intervals of the partition means within both the first header and the second header. Further, the one end of each tube in the vertical direction of the vehicle is disposed so as to face upward, and the other end of the tube is disposed so as to face downward. The first pipe joint or the second pipe joint, out of which the refrigerant flows during cooling operation, is provided to the second header. The number of the tube groups is three or more. |
