Patent ID: 6457515
Filing Date: 2002-10-01
Classification: F28F,H01L

Abstract:
A two-layer micro-channel heat sink for use with a heat generating surface comprising:a first layer comprising an input, an output, and at least one micro-channel disposed between said input of said first layer and said output of said first layer, each said at least one microchannel of said first layer for transporting a first flow of coolant from said input of said first layer to said output of said first layer, said first layer in thermal contact with said heat-generating surface; a second layer comprising an input, an output, and at least one micro-channel disposed between said input of said second layer and said output of said second layer, each said at least one micro-channel of said second layer for transporting a second flow of coolant from said input of said second layer to said output of said second layer, said second layer adjacent to and in thermal contact with said first layer, wherein said second flow of coolant flows in a direction opposite said first flow of coolant; a flow splitting junction, said flow splitting junction adapted to receive a common flow of coolant and to split said common flow of coolant into a first flow and a second flow, said flow splitting junction in fluid communication with said input of said first layer and said input of said second layer; a flow combining junction, said flow combining junction in fluid communication with said output of said first layer and said output of said second layer, said flow combining junction adapted to receive said first flow of coolant and said second flow of coolant and to combine said first and second flow of coolant into a common flow of coolant; and a device for supplying said flow splitting junction with said common flow of coolant and for receiving said common flow of coolant from said flow combining junction so as to circulate coolant across said first layer and said second layer.