Patent ID: 6035931
Filing Date: 2000-03-14
Classification: F28F

Abstract:
A header of a heat exchanger comprising:a seat member comprising a planar plate portion, a first and second curved portion provided on the respective end portions of said planar plate portion in a radial direction of said planar plate for forming a groove and a first and a second bent portion connected to the respective ends of said curved portions, wherein said seat member has a plurality of tube insertion holes for receiving end portions of a plurality of flat heat transfer tubes;a tank member having a first and a second tank end portion and a side wall on each end portion of said tank member in a radial direction of said tank member, each of said side walls having a free end portion extending toward a tip of said side wall and bent inwardly by an amount substantially equal to a thickness of said bent portions, said seat member and said tank member forming a barrel of said header, having a first and a second end opening in an axial direction of said barrel, by engagement of an inner surface of each said bent portion with an outer surface of each said free end portion, such that said barrel does not have outwardly protruding portions on both exterior side surfaces of said barrel positioned at each of said first and second openings, said first and second bent portions of said seat member flush said side walls of said tank member, wherein said grooves of said curved portions receive therein said free end portions of said side walls;a plurality of fins adjacent to said seat member, said curved portions sealing a space formed between said plurality of fins and said seat member; anda cap member fitted to each end opening of said barrel from the exterior of said each end opening of said barrel.