Heat exchanger

Abstract

A heat exchanger 1 A has: two header pipes 2 and 3 arranged parallel at an interval; a plurality of flat tubes 4 arranged between the header pipes 2 and 3 with refrigerant passages 5 inside them communicating with the inside of the header pipes 2 and 3; and corrugated fins 6 arranged between adjacent flat tubes 4. To outward facing flat surfaces of, of the plurality of flat tubes 4 , those located outermost, outermost corrugated fins 6 a having pleats in the shape of a louver are fitted.

1 . A heat exchanger comprising:
 a plurality of header pipes arranged parallel at an interval;   a plurality of flat tubes arranged between the plurality of the header pipes with refrigerant passages inside them communicating with the inside of the header pipes;   corrugated fins arranged between adjacent flat tubes; and   outermost corrugated fins fitted to outward facing flat surfaces of, of the plurality of flat tubes, those located outermost,   wherein   the outermost corrugated fins have pleats overlapped in a shape of a louver.   
     
     
         2 . The heat exchanger according to  claim 1 ,
 wherein   the plurality of flat tubes are arranged with a length direction thereof vertically aligned, and the outermost corrugated fins have pleats extending obliquely downward.   
     
     
         3 . The heat exchanger according to  claim 1 ,
 wherein   the plurality of flat tubes are arranged with a length direction thereof horizontally aligned, and of the outermost corrugated fins, at least a bottommost corrugated fin has adjacent pleats overlapped in a shape of a louver.