| 摘要 |
PROBLEM TO BE SOLVED: To solve some problems found in the prior art in that a heat exchanger has a plurality of flat pipes arranged vertically while keeping a first clearance among them, a plurality of plate-like fins crossing with the plurality of flat pipes while keeping a second clearance among them for defining between the adjoining flat pipes of the plurality of flat pipes for forming aeration passages, a plurality of louvers formed by cutting and raising up fins are arranged side by side in an air aeration direction, since the louvers are cut and raised at the same angle from the upper end to the lower end, condensed water may easily be accumulated between the louvers to make a clogging state, when the condensed water shows a clogged state, an area where the heat exchanger and air contact to each other is reduced and a heat exchanging efficiency is reduced.SOLUTION: Louvers have an upper louver part and a lower louver part and the cut and raised angle of the lower louver is made to be smaller than a cut and raised angle of the upper louver.SELECTED DRAWING: Figure 3 |
