Heat dissipation apparatus, two-phase heat exchange device and manufacturing method thereof

Abstract

A heat dissipation apparatus includes a plurality of fins and a two-phase heat exchange device connected to the fins. The two-phase heat exchange device includes a main body and a continuous wick structure. The main body forms a closed space therein, and the continuous wick structure is disposed on the entire inner surface of the main body. Methods for manufacturing a two-phase heat exchange device and a heat dissipation apparatus are also introduced.

1 . A two-phase heat exchange device, comprising:
 a main body having a closed space therein; and   a continuous wick structure disposed on an entire inner surface of the main body.   
   
   
       2 . The two-phase heat exchange device of  claim 1 , wherein the continuous wick structure comprises metal, alloy, or combinations thereof. 
   
   
       3 . The two-phase heat exchange device of  claim 1 , wherein the main body comprises a container and a cover sealing an opening of the container. 
   
   
       4 . The two-phase heat exchange device of  claim 3 , wherein the container comprises a bottom portion and a lateral wall surrounding the bottom portion. 
   
   
       5 . The two-phase heat exchange device of  claim 4 , wherein the bottom portion and the lateral wall are two individual components connected together or integrally formed as a single piece. 
   
   
       6 . The two-phase heat exchange device of  claim 4 , wherein the cover, the bottom portion and the lateral wall comprise materials of high thermal conductivity, and the materials of high thermal conductivity comprise aluminum, copper, titanium, molybdenum, silver, stainless steel, carbon steel, or alloy thereof. 
   
   
       7 . The two-phase heat exchange device of  claim 3 , further comprising a fill tube connected to the cover, wherein a working fluid is filled into the main body through the fill tube, and the working fluid comprises inorganic compound, pure water, alcohol, ketone, liquid metal, coolant, organic compound, or combinations thereof. 
   
   
       8 . The two-phase heat exchange device of  claim 1 , wherein the main body directly contacts a heat source or connects the heat source via a base, the base is a solid metal block, and the heat source is an electronic device, including a CPU, transistor, server, graphic card, hard disk, power supply, traffic control system, multimedia electronic device, wireless base station, or video game player. 
   
   
       9 . The two-phase heat exchange device of  claim 1 , wherein the main body has a circular, triangular, square, trapezoid, or polygonal cross-section, and the two-phase heat exchange device is a flattened heat pipe, flat plate heat pipe, or horizontal heat column. 
   
   
       10 . The two-phase heat exchange device of  claim 1 , wherein the two-phase heat exchange device is connected to a plurality of fins. 
   
   
       11 . A method for manufacturing a two-phase heat exchange device, comprising steps of:
 providing a container, wherein the container has an opening and a first wick structure disposed on an inner surface thereof;   adding a predetermined material into the container;   providing an cover, wherein a main body of the two-phase heat exchange device is constructed by joining the cover with the container, and the cover seals the opening to form a closed space within the main body;   inverting and shaking the main body, such that the predetermined material averagely fall on the inner surface of the cover; and   forming a second wick structure on the inner surface of the cover, wherein the first and second wick structures form a continuous structure covering the entire inner surface of the main body.   
   
   
       12 . The method of  claim 11 , wherein the first wick structure is formed on the inner surface of the container by sintering, and the predetermined material comprises a plurality of sintering particles. 
   
   
       13 . The method of  claim 12 , wherein the second wick structure is formed on the inner surface of the cover by sintering the sintering particles, and the first and second wick structures form the continuous wick structure. 
   
   
       14 . The method of  claim 11 , wherein a fill tube is connected to the cover, further comprising the step of:
 filling in a working fluid, wherein the working fluid is filled into the main body through the fill tube.   
   
   
       15 . The method of  claim 11 , further comprising the step of connecting the two-phase heat exchange device to a plurality of fins. 
   
   
       16 . The method of  claim 15 , wherein the connecting is press-fitting or welding. 
   
   
       17 . A heat dissipation apparatus, comprising:
 a plurality of fins; and   a two-phase heat exchange device connected to the fins, comprising a main body and a continuous wick structure, wherein the main body forms a closed space therein, and the continuous wick structure is disposed on an entire inner surface of the main body.   
   
   
       18 . The heat dissipation apparatus of  claim 17 , wherein the fins are stacked and arranged horizontally with respect to the two-phase heat exchange device. 
   
   
       19 . The heat dissipation apparatus of  claim 17 , wherein the fins are arranged radially around the two-phase heat exchange device.