Patent ID: 6575231
Filing Date: 2003-06-10
Classification: F28F,H01L

Abstract:
A spiral step-shaped heat dissipating module, suitable for being mounted to a heat-emitting element to dissipate heat, the heat dissipating module comprising:a heat dissipating fan; a heat sink, mounted to the heat dissipating fan, the heat sink including a plurality of heat dissipating plates formed by stamping and stacked over one another while being angularly rotated relative to one another to form a spiral and stepped shape, each of the heat dissipating plates providing a plurality of convection holes; and a guiding plate, mounted between the heat sink and the heat-emitting element and providing a plurality of guiding grooves extended radially and outwardly from a center thereof; wherein an airflow produced by a rotation of the heat dissipating fan generates a thermal convection to the outside via the guiding grooves and the convection holes, the guiding grooves further guiding the heat through the heat sink to be externally dissipated via the spiral periphery of the heat sink.