Patent ID: 7124813
Filing Date: 2006-10-24
Classification: F28F,Y10T

Abstract:
1. A method of manufacturing a fin plate for a heat exchanger coil assembly having a predefined fin pitch and a plurality of tubes arranged into a plurality of rows, the method comprising the steps of: defining a reference shape for the fin plate, the reference shape having a substantially sinusoidal shape and corresponding to a nominal air streamline; providing a first die to form a first predetermined pattern into the fin plate, the first predetermined pattern being formed with respect to the reference shape; forming the reference shape in the fin plate with the first die; raising a section of the fin plate above the reference shape by a first distance with the first die to form the first predetermined pattern into the fin plate; providing a second die to form a second predetermined pattern into the fin plate, the second predetermined pattern having a plurality of segments and at least one segment of the plurality of segments being offset from the first predetermined pattern by a first distance and at least one other segment of the plurality of segments being offset from the first predetermined pattern by a second distance; slitting the fin plate with the second die to define the plurality of segments; offsetting the at least one segment of the plurality of segments from the first predetermined pattern by the first distance with the second die; and offsetting the at least one other segment of the plurality of segments from the first predetermined pattern by the second distance with the second die to form the second predetermined pattern.