Flat heat pipe

Abstract

An exemplary flat heat pipe includes a cover, a wick structure and a restricting plate. The cover defines a receiving chamber therein. The wick structure is received in the receiving chamber. The restricting plate is received in the receiving chamber and opposite ends thereof abut against opposite inner surfaces of the cover to divide the receiving chamber into two passages. The restricting plate divides the wick structure into two wick portions, the wick portions are adhered on lateral surfaces of the restricting plate and located at lateral sides of two passages, respectively.

What is claimed is: 
     
         1 . A flat heat pipe comprising:
 a cover defining a receiving chamber therein;   a wick structure received in the receiving chamber; and   a restricting plate received in the receiving chamber and opposite ends thereof abutting against opposite inner surfaces of the cover to divide the receiving chamber into two passages;   wherein the restricting plate divides the wick structure into two wick portions, the wick portions are adhered on opposite lateral surfaces of the restricting plate and located at lateral sides of two passages, respectively.   
     
     
         2 . The flat heat pipe as described in  claim 1 , wherein the wick portions are symmetrical relative to the restricting plate. 
     
     
         3 . The flat heat pipe as described in  claim 1 , wherein each of the two passages is a hermetical chamber, and the two passages are not in communication with each other. 
     
     
         4 . The flat heat pipe as described in  claim 3 , wherein the cover comprises an elongated top plate, an elongated bottom plate spaced from the top plate and two connecting plate connecting lateral edges of the top plate and the bottom plate, the top plate, the bottom plate and the connecting plate cooperatively define the receiving chamber therebetween, and the restricting plate abuts against the top plate and the bottom plate to divide the receiving chamber to the two passages along a longitudinal direction of the cover. 
     
     
         5 . The flat heat pipe as described in  claim 4 , wherein the restricting plate is elongated and made of a material having good heat transferring performance and compressive capacity. 
     
     
         6 . The flat heat pipe as described in  claim 4 , wherein the wick structure is located at a central portion of the receiving chamber along the longitudinal direction of the cover and opposite ends thereof abut against central portions of the top plate and the bottom plate. 
     
     
         7 . The flat heat pipe as described in  claim 6 , wherein the wick structure comprises a neck portion and two adhering portions located at top and bottom ends of the neck portion, the adhering portion is larger than the necking portion, and the two adhering portions respectively adhere to the central portions of the top plate and the bottom plate. 
     
     
         8 . The flat heat pipe as described in  claim 4 , wherein a distance between outer surfaces of the top plate and the bottom plate is varies between 0.8 mm to 2.0 mm. 
     
     
         9 . The flat heat pipe as described in  claim 1 , wherein edges of the wick structure are rounded. 
     
     
         10 . A flat heat pipe comprising:
 a cover comprising a top plate, a bottom plate spaced the top plate and two connecting plates connecting lateral edges of the top plate and the bottom plate, the top plate, the bottom plate and the connecting plates cooperatively defining a receiving chamber therein;   two wick portions received in the receiving chamber and opposite ends thereof abutting central portions of the top plate and the bottom plate; and   a restricting plate received in the receiving chamber and opposite ends thereof abutting against the top plate and the bottom plate to divide the receiving chamber into two passages, lateral surfaces of the restricting plate respectively facing the passages;   wherein the two wick portions are adhered on the lateral surfaces of the restricting plate and located at the two passages, respectively.   
     
     
         11 . The flat heat pipe as described in  claim 10 , wherein each of the two passages is a hermetical chamber, and the two passages are in not communication with each other. 
     
     
         12 . The flat heat pipe as described in  claim 10 , wherein the restricting plate is elongated and made of a material having good heat transferring performance and compressive capacity. 
     
     
         13 . The flat heat pipe as described in  claim 10 , wherein the wick portions are symmetrical relative to the restricting plate. 
     
     
         14 . The flat heat pipe as described in  claim 10 , wherein each wick portion is a screen made of wires mesh or a sintered body sintered by metal powder. 
     
     
         15 . The flat heat pipe as described in  claim 10 , wherein the cover is integrally formed by one piece.