Patent ID: 9370815
Filing Date: 2016-06-21
CPC Classification: B21D,F25B,F28D,F28F,Y10T

Claim Text:
1. A method of manufacturing a heat exchanger, comprising: providing a header frame having end plates; providing a plurality of hairpins; providing cooling fins having openings located therethrough; placing a portion of said plurality of hairpins through each of said openings; expanding each of said portion such that each expands against a circumference of said openings to form a plurality of rows of finned hairpins; placing opposing ends of said finned hairpins through a portion of openings in opposing end plates of said end plates; placing opposing ends of at least one finless hairpin through a remaining portion of said openings in opposing end plates; and coupling a support sheet to said header frame, said at least one finless hairpin extending through said support sheet and being supported thereby.