Heat pipe with heat reservoirs at both evaporating and condensing sections thereof

Abstract

A heat pipe includes a hollow metal casing ( 10 ). The casing has an evaporating section (C) and a condensing section (A) at opposite ends thereof, and an adiabatic section (B) located between the evaporating section and the condensing section. A capillary wick structure ( 12 ) is arranged at an inner surface of the hollow metal casing. Two sealed heat reservoirs ( 20, 21 ) are respectively mounted on the evaporating and condensing sections of the heat pipe for increasing heat absorbing and dissipation areas of the heat pipe.

1 . A heat pipe comprising:
 a hollow metal casing having an evaporating section for receiving heat and a condensing section for releasing the heat, and an adiabatic section located between the evaporating section and the condensing section;   a first working fluid contained in the metal casing;   a first capillary wick structure arranged at an inner surface of the hollow metal casing; and   two sealed heat reservoirs respectively mounted on the evaporating and condensing sections of the heat pipe for increasing heat absorbing and dissipation areas.   
   
   
       2 . The heat pipe of  claim 1 , wherein the evaporating and condensing sections of the heat pipe are inserted into the heat reservoirs and engaged with the corresponding heat reservoirs. 
   
   
       3 . The heat pipe of  claim 1 , wherein second capillary wick structures are arranged at inner surfaces of the heat reservoirs and corresponding outer surfaces of the evaporating and condensing sections of the heat pipe. 
   
   
       4 . The heat pipe of  claim 2 , wherein a second working fluid is contained in the heat reservoir. 
   
   
       5 . The heat pipe of  claim 1 , wherein each of the heat reservoirs comprises an outer wall spacing a distance from an outer surface of each of the evaporating and condensing sections and a pair of opposite lateral sides connected with two opposite ends of the outer wall. 
   
   
       6 . The heat pipe of  claim 5 , wherein an inner wall is formed in each of the heat reservoirs, and the evaporating and condensing sections of the heat pipe are inserted into the heat reservoirs and engage with corresponding inner walls of the heat reservoirs. 
   
   
       7 . The heat pipe of  claim 1 , wherein the heat pipe and at least one of the heat reservoirs have circular cross sections. 
   
   
       8 . The heat pipe of  claim 1 , wherein the heat pipe has one of a circular and a square cross section, and at least one of the heat reservoirs has the other one of the circular and square cross section. 
   
   
       9 . The heat pipe of  claim 1 , wherein the heat pipe has a circular cross section and at least one of the heat reservoirs has a triangular cross section. 
   
   
       10 . The heat pipe of  claim 1 , wherein the heat pipe and at least one of the heat reservoirs have square cross sections. 
   
   
       11 . The heat pipe of  claim 1 , wherein a plurality of fins are mounted on an outer surface of one of the heat reservoirs mounted on the condensing section. 
   
   
       12 . The heat pipe of  claim 1 , wherein a vacuum casing is disposed on the adiabatic section of the heat pipe. 
   
   
       13 . The heat pipe of  claim 12 , wherein a plurality of fins are mounted on an outer surface of one of the heat reservoirs mounted on the condensing section.