Patent ID: 7055576

Claim:
A heat exchange assembly comprising: a header having top, end, side and bottom walls, and an angled wall connected to said top, side and bottom walls extending along a predetermined plane, a cooling side tube extending from said header, and at least one wall separating said header and said cooling side tube, wherein an aperture is provided on said at least one wall, said aperture being formed by edges comprising: an upper section and a lower section extending substantially parallel to each other, a first end section extending between said upper and lower sections on a first end, and a second end section extending between said upper and lower sections, and extending in a direction toward a second end that is opposite said first end, wherein said second end section comprises angled and/or curved upper and lower edge sections that meet to form said second end section, wherein said upper and lower sections are substantially parallel to said top and bottom walls, respectively, and said first end section is substantially normal to said upper and lower sections, and said upper and lower edge sections form a point or substantially blunted or rounded point extending in said direction, wherein said lower edge section extends substantially parallel to said predetermined plane.