Heat-dissipating apparatus

Abstract

A heat-dissipating apparatus has a cooling tube, a tubular conductor and a heat sink. The cooling tube has a body and an inlet and an outlet formed on the periphery of the body and communicating with an inner space of the body. The tubular conductor is mounted in the cooling tube with an outer surface of the tubular conductor engaging the inner rim of each open end to seal the open ends and defining a cooling chamber between the inner wall of the body and the tubular conductor. The heat sink is mounted inside the tubular conductor, and has multiple fins formed by continuously folding a metal sheet in a corrugated and annular form and abutting against an inner wall of the tubular conductor. The heat-dissipating apparatus increases the contact area between the heat sink and the tubular conductor and cooling channels, thereby providing a more satisfactory cooling effect.

What is claimed is: 
     
         1 . A heat-dissipating apparatus comprising:
 a cooling tube having:
 a body having two ends, a periphery, an inner wall and an inner space; 
 two open ends respectively formed at the two ends of the body, each open end having an inner rim; and 
 an inlet and an outlet formed on the periphery of the body and communicating with the inner space defined by the body; 
 a tubular conductor mounted in the cooling tube with an outer surface of the tubular conductor engaging the inner rim of each open end to seal the open ends, defining a cooling chamber between the inner wall of the body of the cooling tube and the tubular conductor, and having an inner wall; and 
 a heat sink made of a heat-conducting metal material, mounted inside the tubular conductor, having multiple fins formed by continuously folding a metal sheet in a corrugated and annular form and abutting against the inner wall of the tubular conductor, and defining multiple cooling channels between the inner wall of the tubular conductor and the fins. 
   
     
     
         2 . The heat-dissipating apparatus as claimed in  claim 1 , wherein the inlet and the outlet are respectively formed on two different positions on the periphery of the body and are respectively adjacent to the two ends of the body.