| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a heat exchanger having high heat conductivity and fins for the heat exchanger, capable of suppressing deformation of fin collars in molding flare sections on distal end sections of the fin collars and superior in adhesion of the fins and a heat transfer tube. <P>SOLUTION: The fin collars 14 molded in a state of vertically rising from a peripheral edge of a through-hole formed on a fin base face 10, are disposed on heat transfer tube holding sections 12 of the band plate-shaped fins 1, the flare sections 15 bent to a side opposite to a side to be kept into contact with the heat transfer tube, are formed on a part of the distal end sections of the fin collars, a height between a top face of the flare section and the fin base face is equal to a pitch interval of stacked fins, cut sections 16 are respectively formed between the flare section and a part free from the flare section of the fin collar, from a collar distal end section, and a length (depth) L of the cut section is a length of a folding radius R of the flare section, or more. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
