Folded fin heat sink and a heat exchanger employing the heat sink

摘要

A heat sink is disclosed for use with a heat exchanger employing a circular fan which forces air in a volute path about a central axis. The heat sink includes a plurality of heat exchanging sections disposed in the path about the axis. Each heat exchanging section includes a thermally conductive sheet folded into alternating ridges and troughs defining generally parallel spaced fins. The heat exchanging sections are oriented such that the fins of each section are at an angle to the fins of an adjacent section.