Heat exchanger, air conditioner using the heat exchanger, and manufacturing method of the heat exchanger

摘要

A heat exchanger 1 includes plural heat transfer tubes 4 and plural fins 2 each having two opposing sides and plural opening ports 6 on one side 3a, of the two sides, for inserting and fastening the heat transfer tubes 4, and the heat exchanger 1 is formed such that the plural heat transfer tubes 4 and the plural fins 2 cross each other, wherein at least two of the plural heat transfer tubes 4 are fastened to the opening ports 6 in a state of protruding from the one sides of the plural fins 2 toward the outside of the plural fins 2.