Dissipation module,flat heat column thereof and manufacturing method for flat heat column

Abstract

A manufacturing method for a flat heat column includes the steps of: providing a flat hollow tube, of which a first wick structure is disposed on the inner surface; providing at least one guiding device disposed within the flat heat tube for supporting the flat heat tube, wherein a second wick structure is disposed on the surface of the guiding device; connecting the first wick structure and the second wick structure for forming a continuous wick structure; and filling a working fluid and sealing both two ends of the flat hollow tube so as to form the flat heat column. A heat dissipation module and its flat heat column are also disclosed for applying to a heat element. The flat heat column can provide flowing path with optimum thermal conductive efficiency for the fluid therein.

1 . A method for manufacturing a flat heat column, the method comprising steps of:
 providing a flat hollow tube having a first wick structure disposed on an inner surface of the flat hollow tube;   providing at least one guiding device disposed within the flat heat column and having a second wick structure disposed on a surface of the guiding device;   connecting the first wick structure and the second wick structure to form a continuous wick structure; and   filling a working fluid and sealing two ends of the flat hollow tube.   
   
   
       2 . The method according to  claim 1 , wherein the flat hollow tube is integrally formed as a single piece and formed by stamping, or the flat hollow tube is a circular tube. 
   
   
       3 . The method according to  claim 2 , wherein at least one convex plate is further formed on a surface of the flat hollow tube. 
   
   
       4 . The method according to  claim 1 , wherein the flat hollow tube is formed directly by stamping, and at least one convex plate is further formed on a surface of the flat hollow tube. 
   
   
       5 . The method according to  claim 1 , wherein the first wick structure and the second wick structure are connected by sintering to form the continuous wick structure, or the first wick structure is a porous structure in a metal spring shape, in a meshed shape, or formed with a metal powder. 
   
   
       6 . The method according to  claim 1 , wherein the guiding device is a solid pillar and the second wick structure is disposed on a surface of the solid pillar, or the guiding device and the second wick structure are integrally formed with the same material. 
   
   
       7 . A flat heat column, comprising:
 a flat hollow tube having a continuous first wick structure disposed on an inner surface of the flat hollow tube;   at least one guiding device disposed in the flat hollow tube and having a second wick structure disposed on a surface of the guiding device; and   a working fluid disposed in the sealed flat hollow tube, wherein the first wick structure and the second wick structure form a continuous wick structure.   
   
   
       8 . The flat heat column according to  claim 7 , wherein the flat hollow tube is integrally formed as a single piece and formed by stamping, or the flat hollow tube is a circular tube. 
   
   
       9 . The flat heat column according to  claim 8 , wherein at least one convex plate is further formed on a surface of the flat hollow tube. 
   
   
       10 . The heat flat column according to  claim 7 , wherein the flat hollow tube is directly formed by stamping. 
   
   
       11 . The flat heat column according to  claim 10 , wherein at least one convex plate is further formed on a surface of the flat hollow tube. 
   
   
       12 . The flat heat column according to  claim 7 , wherein the first wick structure and the second wick structure are connected by sintering to form the continuous wick structure, or the first wick structure is a porous structure in a metal spring shape, in a meshed shape, or formed with a metal powder. 
   
   
       13 . The flat heat column according to  claim 7 , wherein the guiding device is a solid pillar and the second wick structure is disposed on a surface of the solid pillar. 
   
   
       14 . The flat heat column according to  claim 7 , wherein the guiding device and the second wick structure are integrally formed with the same material, and the guiding device and the second wick structure are porous structures in a metal spring shape, in a meshed shape, or formed with a metal powder. 
   
   
       15 . The flat heat column according to  claim 7 , wherein the material of the flat hollow tube is aluminum, copper, titanium, molybdenum, or other metal with high thermal conductivity, or the cross-sectional shape of the flat hollow tube is polygon, oblong, or long arc. 
   
   
       16 . The flat heat column according to  claim 7 , wherein a filling tube is further inserted into a side surface of the flat tube so that the working fluid is filled into the flat heat column through the filling tube, the working fluid is inorganic compound, water, alkane, alcohol, liquid metal, ketone, freon, or organic compound, or both two ends of the flat hollow tube are sealed by welding, melting, or mechanical-manufacturing-like way. 
   
   
       17 . The flat heat column according to  claim 7 , wherein at least one supporting part is further disposed in the flat hollow tube such that the flat hollow tube keeps flat while sealing its two ends, and the supporting part is a high thermal conductive stick or formed with a sintered copper powder. 
   
   
       18 . A heat dissipation module, comprising:
 a flat heat column, comprising:
 a flat hollow tube having a continuous first wick structure disposed on an inner surface of the flat hollow tube, 
 at least one guiding device disposed in the flat hollow tube and having a second wick structure disposed on a surface of the guiding device, and 
 a working fluid disposed in the sealed flat hollow tube; and 
   a fin connected to the flat heat column;   wherein the first wick structure and the second wick structure form a continuous wick structure.   
   
   
       19 . The heat dissipation module according to  claim 18 , further comprising:
 a fixing plate having a bottom portion, at least two side portions, and at least two connecting portions, wherein the bottom portion and the side portions form a accommodating space for accommodating the flat heat column, the bottom portion has an opening for accommodating a convex plate formed on a surface of the flat hollow tube, the fin is connected to a side of the flat heat column opposite to the convex plate and is fixedly connected to the connecting portions.   
   
   
       20 . The heat dissipation module according to  claim 18 , further comprising:
 at least two fixing plates, and each of the fixing plates having a bottom portion and a side portion, disposed oppositely on two sides of the flat heat column, and the side portion leaning against and pressing the flat heat column, wherein the fin is connected to a side of the heat flat column opposite to a convex plate formed on a surface of the flat hollow tube and is fixedly connected to the bottom portion of each of the fixing plates.