Heat exchanger unit and method of manufacture

Details Heat exchanger unit and method of manufacture Heat exchanger unit and method of manufacture

F - Mech Eng,Light,Heat,Weapons

28

B

26/145, 257/21

F28B 1/00 (2006.01)

Patent

CA 1213880

ABSTRACT OF THE DISCLOSURE A heat exchanger unit having opposed pan shaped sections with perimeter flanges which are folded one over the other to secure the sections together. The section having the inner flange is formed with a displaced flange portion or bead all along the perimeter flange portions, which bead is elastically displaced by the folded over flange to form a substantially leakproof joint. The edges of the sections formed by the flanges are crimped at spaced apart locations to extend in respective planes coincident with a central longitudinal plane through the heat exchanger and extending at an acute angle with respect to said longitudinal plane to form small triangular shaped areas interconnecting the crimped locations.

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