| 摘要 |
<p>PROBLEM TO BE SOLVED: To bring air currents, flowing between a plurality of plate fins, into a turbulent flow and mix together the air currents, to effectively decrease the occurrence of a dead flow area to the rear of a heat transfer pipe, and to improve heat transfer at a central part between a plurality of heat transfer pipes so that a flow of heat is smoothly transmitted without shutoff. SOLUTION: A heat-exchanger for an air-conditioner comprises a fifth slit part formed in a flat fin 1 such that a given height is provided in a position passing the second vertical central line of a heat transfer pipe 2 between a plurality of the heat transfer pipes 2 vertically aligned; first and second slit parts vertically symmetrically formed in a plurality of flat fins 1 such that height is gradually more decreased than that of the fifth slit part with the progress in the opposite direction to the progress of a flow of an air flow on a basis of the fifth slit part; and third and fourth slit parts vertically symmetrically in a plurality of plate fins 1 such that height is gradually increased from a position lower than the height of the fifth slit part with the progress in the progress direction of a flow of an air flow on a basis of the fifth slit part.</p> |
