| 摘要 |
Provided is a heat-exchanger offset fin (5) which is disposed among a plurality of coolant tubes arranged in parallel. A plurality of segments (10), that are individual fins cut and lifted into strips from the rising surfaces (8) and falling surfaces (9) of the fin which is folded and formed into wave shapes, are disposed in an offset manner with intervals therebetween of at least two rows in the direction of airflow. The length (L) of each segment (10) in the direction of airflow satisfies 0.5 mm ≤ L ≤ 1.2 mm. The number of divisions of each individual segment (10) within a single pitch of the wave fins is three or greater. |
