HEAT EXCHANGER FOR EFFECTIVELY GUIDING AIR FLOWING BETWEEN TUBE AND TUBE TO REAR OF TUBES

摘要

PURPOSE: A heat exchanger is provided to reduce a pressure loss occurring contrary to the quick flux of air flowing between a tube and a tube, to increase heat transfer, and to improve the efficiency of the heat exchanger. CONSTITUTION: A heat exchanger comprises plural fins(110) having top parts(112) and bottom parts(114) successively formed; tubes(130) installed to the fins; fin collars(116) supporting the tubes inserted into the fins; seats(118) formed to the lower end of the outer peripheral surface of the fin collars in a concentric circular shape with respect to the fin collars; and top part-slant faces(120) formed to each top part of the fins in the seat. The height(H2a) of the bottom part is smaller than the height(H1a) of the top part. The top part-slant face prevents the flowing air surrounding the tubes from being escaping from the vicinity of the tube.