Patent ID: 6446711
Filing Date: 2002-09-10
Classification: F28F

Abstract:
In a heat exchanger having opposed, spaced, parallel tubular headers having opposite ends, aligned facing tube slots in said headers, elongated, flattened tubes spaced from one another and extending between said headers and having opposite ends sealingly received in aligned facing ones of said slots, side pieces extending between said headers at the ends thereof and spaced from said tubes, and serpentine fins between said tubes, and said tubes and said side pieces, and bonded thereto, the improvement wherein at least one said side piece includes an elongated, generally flat base having opposed ends with a concave recess in the base just inside each end thereof and having an opening to a respective end, each recess having a shape conforming to and being no greater in size than a cross sectional shape of the end of the corresponding header and being narrower at said opening than at a point between said opening and a remote part of said recess.