Heat dissipation device

Abstract

A heat dissipation device for removing heat from heat-generating components includes a fin unit. The fin unit includes a plurality of fins stacked together. Each fin is wave-shaped in profile and comprises a plurality of wave crests and wave troughs alternately arranged with each other. The wave crests of one of the fins respectively engage the wave troughs of a neighboring upper one of the fins. The wave troughs of the one of the fins are separated from and located below the corresponding wave crests of the upper one of the fins.

1 . A heat dissipation device adapted for removing heat from a heat-generating component, comprising:
 a fin unit comprising a plurality of fins stacked together, each fin being wave-shaped in profile and comprising a plurality of wave crests and wave troughs alternately arranged with each other;   wherein the wave crests of one of the fins respectively engage the wave troughs of a neighboring upper one of the fins, and the wave troughs of the one of the fins are separated from and located below the wave crests of the neighboring upper one of the fins.   
     
     
         2 . The heat dissipation device as claimed in  claim 1 , wherein a plurality of air passages are defined between the wave troughs of the one of the fins and the wave crests of the neighboring upper one of the fins. 
     
     
         3 . The heat dissipation device as claimed in  claim 2 , wherein the fins are rectangular wave-shaped in profile, the air passages each being rectangular in cross section. 
     
     
         4 . The heat dissipation device as claimed in  claim 3 , wherein top surfaces of the wave crests of the one of the fins and bottom surfaces of the wave troughs of the neighboring upper one of the fins have the same rectangular configuration and the same size and are fitly coupled with each other. 
     
     
         5 . The heat dissipation device as claimed in  claim 1 , wherein the fin unit comprises a plurality of first fins and a plurality of second fins, the first fins and the second fins being alternately arranged with each other, each first fin comprising a plural first crest parts, a plural first trough parts and a plural first connecting parts interconnecting the first crest and trough parts, each second fin comprising a plural second crest parts, a plural second trough parts and a plural second connecting parts interconnecting the second crest and trough parts. 
     
     
         6 . The heat dissipation device as claimed in  claim 5 , wherein the first trough parts of one of the first fins respectively engage the crest parts of a lower neighboring second fin, while the first crest parts of the one of the first fins are respectively separated from and located over the second trough parts of the lower neighboring second fin. 
     
     
         7 . The heat dissipation device as claimed in  claim 6 , wherein a plurality of air paths are respectively defined between the separated first crest parts and the second trough parts. 
     
     
         8 . The heat dissipation device as claimed in  claim 6 , wherein a plurality of air paths are respectively defined between the second crest parts of the lower neighboring second fin and the first trough parts of one of the first fins immediately below the lower neighboring second fin. 
     
     
         9 . The heat dissipation device as claimed in  claim 6 , wherein each first fin has the same configuration with each second fin, the first fins and the second fins are arranged oppositely in a vertical direction. 
     
     
         10 . The heat dissipation device as claimed in  claim 1 , wherein each fin comprises a main body and two engaging parts at two opposite ends of the main body, the alternating crests and troughs being formed on the main body. 
     
     
         11 . The heat dissipation device as claimed in  claim 10 , further comprising a conducting plate above which the fin unit is located and a plurality of heat pipes, the fins of the fin unit being parallel to the conducting plate, the heat pipes comprising a plural evaporating sections embedded in a top surface of the conducting plate and a plural condensing sections extending upwardly and perpendicularly through the engaging parts of the fins from opposite ends of the evaporating sections. 
     
     
         12 . The heat dissipation device as claimed in  claim 11 , wherein the fins are divided into a plurality of pairs, the engaging parts of each pair of the fins at the same end of the main bodies protruding away from each other and defining a plurality of receiving holes therein receiving the condensing sections of the heat pipes. 
     
     
         13 . The heat dissipation device as claimed in  claim 13 , wherein the engaging parts at the same end of the main bodies are parallel to each other and spaced from each other with a constant distance in the fin unit, an annular collar extending perpendicularly from an inner edge of each receiving hole of the engaging part and being intimately attached around a corresponding condensing sections of a corresponding heat pipe. 
     
     
         14 . The heat dissipation device as claimed in  claim 11 , further comprising a heat dissipating member sandwiched between a bottom of the fin unit and the top surface of the conducting plate, the heat dissipating member comprising a plurality of vertical sheets perpendicularly arranged on the conducting plate and a plurality of connecting flanges interconnecting top edges and bottom edges of every two neighboring vertical sheets. 
     
     
         15 . The heat dissipation device as claimed in  claim 14 , wherein the connecting flanges at the top edges of the vertically sheets are attached the bottom of the fin unit, while the connecting flanges at the bottom edges of the vertical sheets are coupled to the top surface of conducting plate and simultaneously contact tops of the evaporating sections of the heat pipes. 
     
     
         16 . The heat dissipation device as claimed in  claim 14 , further comprising a fan fixed to rear sides of the fin unit and the heat dissipating members by two fan holders.