Heat sink

Abstract

A heat sink provided. In the heat sink in accordance with an embodiment of the present invention, a heat dissipation plate forms a channel between each of stages by isolating a plurality of heat dissipating fins in equal intervals and arranging the heat dissipating fins in a multi-stage circle shape. Then, the heat sink forms a path between the sequentially isolated heat dissipating fins at each of the stages. Also, a centrifugal fan alternatively blocks the channel and path at each of the stages through a rotation by a plurality of blades arranged in a multi-stage circle shape to be positioned between the channels. Then, the centrifugal fan is capable of inflowing outer air to discharge the air by generating a pressure difference of inter/outer air through a combination of the blade and the heat dissipation plate.

1 . A heat sink comprising:
 a heat dissipation plate forming a channel between each of stages by isolating a plurality of heat dissipating fins in equal intervals and arranging the heat dissipating fins in a multi-stage circle shape, forming a path between the sequentially isolated heat dissipating fins at each of the stages; and   a centrifugal fan alternatively blocking the channel and path at each of the stages through a rotation by a plurality of blades arranged in a multi-stage circle shape to be positioned between the channels, inflowing outer air to discharge the air by generating a pressure difference of inter/outer air through a combination of the blade and the heat dissipation plate.   
     
     
         2 . The heat sink of  claim 1 , wherein the heat dissipation plate includes a second flange in which the heat dissipation fins are mounted vertically upward with respect to the second flange, and a motor is set vertically upward on an upper surface of the second flange. 
     
     
         3 . The heat sink of  claim 2 , wherein the centrifugal fan prepares a first flange in which the blades are mounted vertically downward with respect to the blade to form an inflow hole and is rendered to be rotated by fixing a rotary shaft of the motor by a connection hole of a combination block after positioning the combination block supported by a rib at a center of the inflow hole. 
     
     
         4 . The heat sink of  claim 1 , wherein the path is a space between the sequentially isolated heat dissipation fins at equal intervals and has a virtual arc shape which is radiated outwardly from a center of the second flange under the condition that the heat dissipation fins are arranged in a multi-stage concentric circle shape. 
     
     
         5 . The heat sink of  claim 1 , wherein the blades are arranged to be crossed between the channels and paths of each of stages in the heat dissipation plate. 
     
     
         6 . The heat sink of  claim 1 , wherein the heat dissipation fins and blades have an incline line on one side thereof, and the incline lines has an angle inside from outside thereof toward a rotational direction of the heat dissipation plate.