Multiple Bank Flattened Tube Heat Exchanger

摘要

A multiple bank, flattened tube, finned heat exchanger includes a first tube bank including a plurality of flattened heat exchange tube segments extending longitudinally and arrayed in spaced parallel relationship between a first manifold and a second manifold and a second tube bank including a plurality of flattened tube segments extending longitudinally and arrayed in spaced parallel relationship between a first manifold and a second manifold, the second tube bank disposed in spaced relationship with and behind the first tube bank. A folded fin is disposed between each set of adjacent heat exchange tube segments of the first and second tube banks. Each folded fin extends between a respective set of adjacent heat exchange tube segments of both the first tube bank and the second tube bank, spanning the spacing gap between the tube banks. A plurality of fin notches protrude outwardly from each folded fin into the spacing gap.

主权项

1. A multiple bank, flattened tube heat exchanger comprising:
a first tube bank including at least a first flattened heat exchange tube segment and a second flattened heat exchange tube segment extending longitudinally and arrayed in spaced parallel relationship between a first manifold and a second manifold; a second tube bank including at least a first flattened heat exchange tube segment and a second flattened heat exchange tube segment extending longitudinally and arrayed in spaced parallel relationship between a first manifold and a second manifold, the second tube bank disposed in spaced relationship at a spacing gap behind the first tube bank; a longitudinally extending folded fin disposed between said first and second heat exchange tube segments of the first tube bank and between said first and second heat exchange tube segments of the second tube bank and spanning said spacing gap, said folded fin having a plurality of spaced fin faces extending between said first and second heat exchange tube segments of the first tube bank and between said first and second heat exchange tube segments of the second tube bank and a plurality of fin caps interconnecting the fin faces and abutting said first and second heat exchange tube segments of the first tube bank and said first and second heat exchange tube segments of the second tube bank; and a plurality of fin notches protruding outwardly from said folded fin into said spacing gap, each fin notch protruding outwardly from a respective one of said plurality of fin caps into said spacing gap; wherein each fin notch has a height equal to at least a half of a thickness of said heat transfer tube segments.