HEAT EXCHANGER HEADER, HEAT EXCHANGER, METHOD FOR MANUFACTURING HEAT EXCHANGER HEADER, AND METHOD FOR MANUFACTURING HEAT EXCHANGER

摘要

This heat exchanger header comprises: a first header member that has a first pipe in which a bypass flow passage for circulating a heat medium is formed, and a pipe forming part which is a portion of a second pipe in which a main flow passage for circulating a heat medium is formed; and a second header member (120) that is joined to the pipe forming part and forms the second pipe together with the pipe forming part. The second header member (120) has a curved section, an insertion hole (50) into which a heat transfer pipe (20) is inserted is formed in the curved section, and the hole wall of the insertion hole (50) extends along the inserted heat transfer pipe (20) over the entire circumference.