Heat dissipating tube sintered with copper powders

Abstract

A heat dissipating tube with copper powders comprises a metal tube; an inner wall of the metal tube having at least one non-flat portion; and a plurality of copper powders adhered on the inner wall of the metal tube. There are a plurality of non-flat portions which are distributed along a periphery of a cross section of the metal tube. A cross section of the non-flat portion has a shape selected from one of trapezoids, rectangular shapes, semi-round shapes, sector shapes, sawtooth shapes, triangular shapes, or other irregular shape. The non-flat portion may be selected from one of at least one trench, at least one protrusion and at least one groove.

1 . A heat dissipating tube sintered with copper powders; the tube comprising: 
 a metal tube; an inner wall of the metal tube having at least one non-flat portion; and    a plurality of copper powders adhered on the inner wall of the metal tube.    
   
   
       2 . The heat dissipating tube as claimed in  claim 1 , wherein there are a plurality of non-flat portions which are distributed along a periphery of a cross section of the metal tube.  
   
   
       3 . The heat dissipating tube as claimed in  claim 1 , wherein a cross section of the non-flat portion has a shape selected from one of trapezoid shapes, rectangular shapes, semi-round shapes, sector shapes, sawtooth shapes, triangular shapes, or other irregular shapes.  
   
   
       4 . The heat dissipating tube as claimed in  claim 1 , wherein the non-flat portion is at least one trench formed on the inner wall of the metal tube and the inner wall of the trench is adhered with the copper powders.  
   
   
       5 . The heat dissipating tube as claimed in  claim 4 , wherein the at least one trench is extended along an axis of the metal tube.  
   
   
       6 . The heat dissipating tube as claimed in  claim 1 , wherein the non-flat portion is at least one protrusion formed on the inner wall of the metal tube and an outer wall of the protrusion is adhered with the copper powders.  
   
   
       7 . The heat dissipating tube as claimed in  claim 6 , wherein the at least one protrusion is adhered to the inner wall of the metal tube.  
   
   
       8 . The heat dissipating tube as claimed in  claim 6 , wherein the protrusion is integrally formed with the metal tube.  
   
   
       9 . The heat dissipating tube as claimed in  claim 1 , wherein non-flat portion is at least one groove formed on the inner wall of the metal tube and an inner wall of the groove is adhered with the copper powders.  
   
   
       10 . The heat dissipating tube as claimed in  claim 4 , wherein the at least one groove is extended along an axis of the metal tube.