| 摘要 |
PROBLEM TO BE SOLVED: To improve heat exchange performance, ensure water draining property of condensed water, and suppress abrupt reduction of performance due to frosting. SOLUTION: This heat exchanger has a plurality of flat tubes arranged in parallel to each other at a predetermined pitch, an upper side header communicating and connecting one ends of the plurality of flat tubes, a lower side header communicating and connecting the other ends of the plurality of flat tubes, and a colgate fin which is arranged between adjacent flat tubes, joins a part close to the flat tube with the flat tube or brings it into close adhesion with the flat tube, and lets air pass through a clearance. The colgate fin is provided with a plurality of crest parts and valley parts in which ridge lines extend in the direction of substantially right angle to the direction of circulation of air alternately in the direction of circulation of air, and a cut-in part is provided on the ridge line in the valley part. COPYRIGHT: (C)2004,JPO&NCIPI
|
