| 摘要 |
An inner fin ( 1 ) of a heat exchanger has, on front and rear faces thereof, protruding ridges ( 2, 3 ) protruding in opposite directions to each other. Grooves ( 4, 5 ) to serve as passages of a heat exchange medium are formed between the adjacent protruding ridges ( 2, 3 ). In wall portions ( 6 ) forming these protruding ridges ( 2, 3 ), cutout windows ( 10, 11 ) are formed to allow the adjacent passages to communicate with each other. Further, protruding weir portions ( 12, 13 ) are provided at bottoms of entrances of the cutout windows ( 10 and 11 ), so that the heat exchange medium hits against the weir portions to promote diffluence and stirring of the heat exchange medium, thereby enhancing heat exchange efficiency.
|
