Patent ID: 6889759
Filing Date: 2005-05-10
Classification: F28F,Y10S

Abstract:
1. A fin for use in a heat exchanger having coils including tube segments extending through the fin, the fin comprising a corrugated sheet of material having a plurality of major corrugations, each major corrugation comprising a peak or a valley adjacent a peak, each major corrugation having an amplitude of a distance “h” between the centerline of material forming the fin at a tip of a peak or a bottom of a valley and perpendicular to a reference major plane equally bisecting the major corrugations where the peaks join the valleys, each major corrugation having a width of a distance “w” corresponding to the width of a peak or a valley between the intersecting points of the reference major plane with adjacent major corrugations; a plurality of orifices adapted for insertion of the tube segments; a collar perpendicular to the reference major plane and extending from the sheet around each of the orifices; and a generally flat area that is generally parallel to or generally coextensive with the reference major plane and that surrounds each collar; the major corrugations in a region adjacent to the generally flat areas having at least one of first angled walls extending from the peaks to the generally flat areas and second angled walls extending from the valleys to the generally flat areas, the angled walls adapted to create a vortex when air travels over the fin; the number of major corrugations being about 8 to about 24 per inch (2.54 cm), the amplitude and width of the major corrugations having a relationship such that a ratio of the distance “h” to the distance “w” is about 0.32 to about 0.7.