| 摘要 |
PURPOSE:To enable to suppress the increase in the pressure loss of a heat exchanger even if the pitch of fins is reduced by improving the combination structure of a tube with a corrugated fin. CONSTITUTION:A corrugated fin 6 is formed in a wavy shape along the air flowing direction A, bonded (by soldering or brazing) to a tube 4, and a louver 6a is cut in a direction perpendicular to the air flowing direction. When the fin 6 with the louver is employed, the air flows in parallel with the depth direction of a core along the louver 6a. Accordingly, the increase in the pressure loss is not almost produced even if the pitch f.p of the fins is decreased. The louver 6a can be utilized effectively for the heat exchange operation. |
