| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a heat exchanger superior in adhesion of fin plates and heat transfer tubes, and heat transferring property to heat exchange fluid, and reduced in ventilation resistance, by reducing deflection of a fin base face. <P>SOLUTION: This heat exchanger includes the flat heat transfer tubes arranged in parallel with each other at intervals over multiple stages, joints fitted to ends of the flat heat transfer tubes for connecting the flat heat transfer tubes, and the plurality of fin plates inserted and fixed at intervals in the direction intersecting with the flat heat transfer tubes arranged in parallel. The fin plates are provided with heat transfer tube retaining sections opened at one end side and cut into the shape to be engaged with the flat heat transfer tubes, at several places in the longitudinal direction, a first cut and raised slit and a second cut and raised slit arranged in the lateral direction, are formed between the heat transfer tube retaining sections adjacent to each other, and the first cut and raised slit near an opening side of the fin plate is lower than the second cut and raised slit near a closed side of the fin plate. <P>COPYRIGHT: (C)2012,JPO&INPIT |
