LAMINATED TYPE HEAT EXCHANGER

摘要

PROBLEM TO BE SOLVED: To provide a laminated type heat exchanger having a header portion with a required strength and capable of being manufactured easily even though a thinsectioned formed plate is employed for constituting a band-shaped tube. SOLUTION: Corresponding header portions 16 located adjacently to each other are formed into tubular headers 14, 15 having different sizes and capable of being inserted and engaged with each other. One 14 of the tubular headers is inserted into and engaged with the other 15 of the tubular headers in a closely contacted state and the two headers are jointed and integrated so that adjacent band-shaped tubes 10 are connected to communicate with each other. A tubular fin is inserted and arranged in such a manner as to bridge both formed plates 11, 12 constituting the band-shaped tubes 10 in an internally contact state in the header portion 16 of each of the bandshaped tubes 10 to complete a jointed integration.