Patent ID: 7578337
Filing Date: 2009-08-25
Classification: F28F,H05K

Abstract:
1. A heat dissipation device, comprising: a housing adapted to conduct heat from a heat source; wherein said housing comprises a first component and a second component; wherein a first fluid cavity is formed by coupling said first component and said second component; an inlet port fluidly coupled to said first fluid cavity; an outlet port fluidly coupled to said first fluid cavity; wherein said first fluid cavity is adapted to flow cooling fluid from said inlet port to said outlet port; an array of first star pins positioned in said first fluid cavity and coupled to said housing; said first component having a surface at a base of said array of first pins; wherein a cross section of said first star pins has at least three concave faces; wherein an intersection of said concave faces on said first star pins form first edges; an array of first dimples formed on said surface of said first component of said housing to be in said first fluid cavity and at least proximally located at said base of said array of first star pins; said array of first star pins being coupled to said first component; said array of first dimples being formed on said surface of said first component; said first dimples being positioned between said first star pins; an array of second dimples formed on a surface of said second component; said second dimples being positioned to align with said first star pins on said first component; first dimples of said array of first dimples and second dimples of said array of second dimples having concave up-facing surfaces and concave down-facing surfaces, respectively, formed in said surface of said first component of said housing and in said surface of said second component of said housing, respectively; said concave up-facing surfaces being at least substantially perpendicular with respect to a bottom surface of said first component; said concave down-facing surfaces being at least substantially perpendicular with respect to a top surface of said second component; and said first star pins not touching said second component.