Heat pipe

Abstract

A heat pipe includes a casing and a supporting member. The casing is made of titanium and has a first end and a second end at two opposite sides thereof. The first end defines a receiving space therein. The supporting member is made of a material selected from one of copper, aluminum, stainless steel, low-carbon steel, iron, nickel, tungsten, tantalum, molybdenum, rhenium and columbium. The supporting member is received in the receiving space of the first end of the casing. The first end of the casing and the supporting member are integrally cramped and sealed.

1 . A heat pipe comprising:
 a casing made of titanium and having a first end and a second end at two opposite sides thereof, the first end defining a receiving space therein; and   a supporting member being made of a material selected from one of copper, aluminum, stainless steel, low-carbon steel, iron, nickel, tungsten, tantalum, molybdenum, rhenium and columbium, the supporting member being received in the receiving space of the first end of the casing, the first end of the casing and the supporting member being integrally cramped and sealed.   
     
     
         2 . The heat pipe as claimed in  claim 1 , wherein an inner peripheral surface of the first end is tightly attached to an outer peripheral surface of the supporting member. 
     
     
         3 . The heat pipe as claimed in  claim 1 , wherein the first end comprises a shrinkage portion and a sealing portion at two opposite ends thereof, the shrinkage portion has a tapered configuration and an outer diameter of the shrinkage portion gradually decreases along an axial direction from the second end of the casing toward the first end of the casing. 
     
     
         4 . The heat pipe as claimed in  claim 3 , wherein the supporting member comprises a positioning member corresponding to the shrinkage portion of the casing and a sealing portion corresponding to the sealing portion of the first end of the casing, the sealing portion of the supporting member is flat and has a top wall and a bottom wall intimately connected to the top wall. 
     
     
         5 . The heat pipe as claimed in  claim 4 , wherein a free end of the sealing portion of the first end of the casing and a free end of the sealing portion of the supporting member are connected and sealed together by welding. 
     
     
         6 . The heat pipe as claimed in  claim 1  further comprising a wick structure disposed in the heat pipe and working fluid contained in the heat pipe. 
     
     
         7 . A heat pipe, comprising:
 a casing made of titanium and having a first end and a second end at two opposite sides thereof, the first end defining a receiving space therein; and   a supporting member made of a material different from titanium, the supporting member being received in the receiving space of the first end of the casing, the first end of the casing and the supporting member being integrally cramped and sealed.   
     
     
         8 . The heat pipe as claimed in  claim 7 , wherein the supporting member is made of a material selected from the group consisting of copper, aluminum, stainless steel, low-carbon steel, iron, nickel, tungsten, tantalum, molybdenum, rhenium and columbium. 
     
     
         9 . The heat pipe as claimed in  claim 8 , wherein an outer peripheral surface of the supporting member is tightly attached to an inner peripheral surface of the first end of the casing. 
     
     
         10 . The heat pipe as claimed in  claim 9 , wherein the first end of the casing comprises a shrinkage portion and a sealing portion at two opposite ends thereof, the shrinkage portion has a tapered configuration and an outer diameter of the shrinkage portion gradually decreases along an axial direction from the second end of the casing toward the first end of the casing. 
     
     
         11 . The heat pipe as claimed in  claim 10 , wherein a free end of the sealing portion of the casing and a free end of the sealing portion of the supporting member are connected and sealed together by welding. 
     
     
         12 . The heat pipe as claimed in  claim 7  further comprising a wick structure disposed in the heat pipe and working fluid contained in the heat pipe. 
     
     
         13 . The heat pipe as claimed in  claim 12 , wherein the supporting member is made of copper.