| 摘要 |
PROBLEM TO BE SOLVED: To improve a performance of a heat exchanger.SOLUTION: The heat exchanger comprises: a passage pipe 3 which is formed flat and in which a heat medium that exchanges heat with a heat exchange object is circulated; and a tabular inner fin 34 that is disposed inside of the passage pipe 3 and increases a heat transfer area of the heat exchange object and the heat medium. The inner fin 34 is wave-shaped in a view in a thickness direction of the inner fin 34 and includes a plurality of wave fins 340c dividing a main passage in which the heat medium is circulated into a plurality of thin passages. Between two neighboring wave fins 340c among the plurality of wave fins 340c, a projection 36 is formed that contracts a flow of the thin passage held between the two wave fins 340c in the thickness direction of the inner fin 34.SELECTED DRAWING: Figure 7 |
