Integrated blower diffuser-fin heat sink

摘要

An air-cooled heat exchange device for cooling an object such as an electronic device generating heat during use. The device includes a toroidal electric motor with a centrifugal blower for directing air flow in a downward and outward direction, a heat sink positioned to receive the air flow from the blower; and a spiral diffuser as part of the heat sink, the diffuser having vanes for directing the air flow spirally over the heat sink. The vanes may include microfabricated vibrating reeds and a plurality of microfabricated dimples on at least some of the vanes.