Heat sink with vapor chamber

Abstract

A heat sink includes a tank and a plate covering on the tank and hermetically engaging with the tank. The tank includes a base for absorbing heat from heat-generating members and a sintered wick layer formed at an inner face of base. The plate has a meshed wick layer formed at an inner face thereof. A chamber is defined between the tank and the plate and contains working fluid therein.

1 . A heat sink comprising:
 a tank comprising a base for absorbing heat from a heat-generating member, and a sintered wick layer formed at an inner face of base;   a plate covering on the tank and hermetically engaging with the tank, the plate having a meshed wick layer formed at an inner face thereof; and   a chamber being defined between the tank and the plate, the chamber containing working fluid therein.   
   
   
       2 . The heat sink of  claim 1 , wherein the sintered wick layer and the meshed wick layer are in porosity communication. 
   
   
       3 . The heat sink of  claim 1 , wherein the tank comprises sidewalls extending from the base, the sintered wick layer covering inner faces of the sidewalls. 
   
   
       4 . The heat sink of  claim 3 , wherein the sintered wick layer covers allover the base and the sidewalls. 
   
   
       5 . The heat sink of  claim 3 , wherein the tank comprises a flange extending from the sidewalls, the flange engaging with the plate. 
   
   
       6 . The heat sink of  claim 5 , wherein the flange parallels to the plate. 
   
   
       7 . The heat sink of  claim 1  further comprising a plurality of fins, wherein the fins thermally contacts the plate. 
   
   
       8 . The heat sink of  claim 7 , wherein each of the fins is L-shaped. 
   
   
       9 . The heat sink of  claim 8 , wherein each of the fins comprises a contacting portion thermally contacting the plate and a heat dissipating portion extending remote from the plate. 
   
   
       10 . A heat sink comprising:
 a tank containing phase-changeable working fluid therein;   a plate hermetically covering the tank;   a first wick layer lining to tank; and   a second wick layer lining to the plate, the second wick layer being different from the first wick layer and in porosity communication with the first wick layer.   
   
   
       11 . The heat sink of  claim 10 , wherein the tank comprises a heat absorbing base and a sidewall extending from the base. 
   
   
       12 . The heat sink of  claim 11 , wherein the first wick layer covers the sidewall and the base. 
   
   
       13 . The heat sink of  claim 10 , wherein the tank extends a flange engaging with the plate. 
   
   
       14 . The heat sink of  claim 13 , wherein the flange parallels to the plate. 
   
   
       15 . The heat sink of  claim 10  further comprising a plurality of fins positioned on the plate.