Vapor chamber with wick structure of different thickness and die for forming the same

Abstract

A vapor chamber with a wick structure of different thickness includes a casing, a wick structure, a supporting body and a working fluid. The casing has a chamber. The wick structure is adhered to the inner wall of the chamber. The wick structure has a first wick section and a second wick section extending from the first wick structure. The thickness of the first wick section is larger than that of the second wick section. The supporting body is received within the wick structure. The working fluid is filled within the chamber. Via the above arrangement, the heat-conducting efficiency can be increased while the cost can be reduced.

1 . A vapor chamber with a wick structure of different thickness, comprising:
 a casing having a chamber;   a wick structure adhered to an inner wall of the chamber, the wick structure having a first wick section and a second wick section extending from the first wick structure, a thickness of the first wick section being larger than that of the second wick section;   a supporting body received within the wick structure; and   a working fluid filled within the chamber.   
   
   
       2 . The vapor chamber with a wick structure of different thickness according to  claim 1 , wherein the first wick section is formed with a plurality of first ribs, the second wick section is formed with a plurality of second ribs, and a height of the first rib is larger than that of the second rib. 
   
   
       3 . The vapor chamber with a wick structure of different thickness according to  claim 2 , wherein a first groove is formed between any two adjacent first ribs, a second groove is formed between any two adjacent second ribs, and a depth of the first groove is larger than that of the second groove. 
   
   
       4 . The vapor chamber with a wick structure of different thickness according to  claim 1 , wherein the first wick section is formed with a plurality of first ribs, the second wick section is formed with a plurality of second ribs, and a height of the first rib is the same as that of the second rib. 
   
   
       5 . The vapor chamber with a wick structure of different thickness according to  claim 4 , wherein a first groove is formed between any two adjacent first ribs, a second groove is formed between any two adjacent second ribs, and a depth of the first groove is smaller than that of the second groove. 
   
   
       6 . The vapor chamber with a wick structure of different thickness according to  claim 1 , wherein the wick structure is made of porous metallic sintered powder. 
   
   
       7 . The vapor chamber with a wick structure of different thickness according to  claim 1 , wherein the supporting body comprises two side plates and a plurality of waved pieces connected between the two side plates. 
   
   
       8 . The vapor chamber with a wick structure of different thickness according to  claim 7 , wherein the waved piece is constituted of a plurality of crests and troughs, and the troughs of any two adjacent waved pieces are staggered. 
   
   
       9 . A die for forming a wick structure of a vapor chamber, the wick structure having a first wick section and a second wick section extending from the first wick section, the die comprising:
 a plate having a first section and a second section extending from the first section, the first section being formed with a plurality of first elongate blocks matching the first wick section, the second section being formed with a plurality of second elongate blocks matching the second wick section, a height of the first elongate block being the same as that of the second elongate block.   
   
   
       10 . The die for forming a wick structure of a vapor chamber according to  claim 9 , wherein a first slot is formed between any two adjacent first elongate blocks, a second slot is formed between any two adjacent second elongate blocks, and a depth of the first slot is larger than that of the second slot. 
   
   
       11 . A die for forming a wick structure of a vapor chamber, the wick structure having a first wick section and a second wick section extending from the first wick section, the die comprising:
 a plate having a first section and a second section extending from the first section, the first section being formed with a plurality of first elongate blocks matching the first wick section, the second section being formed with a plurality of second elongate blocks matching the second wick section, and a height of the first elongate block being smaller than that of the second elongate block.