Heat pipe assembly and heat dissipation device having the same

Abstract

A heat pipe assembly includes a number of heat pipes and a fixing seat. Each of the heat pipes includes an evaporating section and at least a condensing section. A bottom of the evaporating section of each of the heat pipes is flat and has a flat heat absorbing surface. The evaporating sections of each of the heat pipes are parallel to and adjoin with each other, whereby the flat heat absorbing surfaces of the evaporating sections of the heat pipes being coplanar and adjoining with each other. A top surface of the evaporating section of each of the heat pipes has a top edge. The fixing seat has an integral structure and combines with the top edge of the evaporating section of each of the heat pipes, whereby the heat absorbing surfaces of the evaporating sections of the heat pipes are coplanar and adjoin with each other.

1 . A heat pipe assembly, comprising:
 a plurality of heat pipes, each having an evaporating section and a condensing section, a bottom of the evaporating section of each of the heat pipes being flat and having a flat heat absorbing surface, evaporating sections of the heat pipes being parallel to and adjoining with each other, whereby the flat heat absorbing surfaces of the evaporating sections of the heat pipes being coplanar and adjoining with each other, a top surface of the evaporating section of each of the heat pipes having a top edge; and   a fixing seat having an integral structure and combing with the top edge of the evaporating section of each of the heat pipes, whereby the heat absorbing surfaces of the evaporating sections of the heat pipes are coplanar and adjoin with each other.   
     
     
         2 . The heat pipe assembly as claimed in  claim 1 , wherein each of the heat pipes has a U-shaped configuration, a bottom portion of the U-shaped configuration is the evaporating section, and two lateral portions of the U-shaped configuration are condensing sections. 
     
     
         3 . The heat pipe assembly as claimed in  claim 1 , wherein each of the heat pipes further comprises a curved section connected between the evaporating section and the condensing section thereof. 
     
     
         4 . The heat pipe assembly as claimed in  claim 3 , wherein the curved sections of the heat pipes are radially arranged and angled with each other, whereby the condensing sections of the heat pipes are spaced from each other. 
     
     
         5 . The heat pipe assembly as claimed in  claim 3 , wherein the fixing seat further comprises a reinforcement portion enclosing the curved section of each of the heat pipes. 
     
     
         6 . The heat pipe assembly as claimed in  claim 1 , wherein the evaporating section of each of the heat pipes has two vertical lateral walls to enable the vertical lateral walls of the heat pipes tightly joint each other. 
     
     
         7 . The heat pipe assembly as claimed in  claim 6 , wherein the fixing seat further comprises an enclosing portion enclosing the lateral walls of the two outermost heat pipes. 
     
     
         8 . The heat pipe assembly as claimed in  claim 7 , wherein the enclosing portion of the fixing seat has a bottom edge coplanar with the heat absorbing surfaces of the evaporating sections of the heat pipes. 
     
     
         9 . A heat dissipation device, comprising:
 a plurality of heat pipes, each having an evaporating section and a condensing section, a bottom of the evaporating section of each of the heat pipes being flat and having a flat heat absorbing surface, evaporating sections of the heat pipes being parallel to and adjoining with each other, whereby the flat heat absorbing surfaces of the evaporating sections of the heat pipes being coplanar and adjoining with each other, a top surface of the evaporating section of each of the heat pipes having a top edge;   a plurality of heat conducting fins disposed on the condensing sections of the heat pipes; and   a fixing seat having an integral structure and combing with the top edge of the evaporating section of each of the heat pipes, whereby the heat absorbing surfaces of the evaporating sections of the heat pipes are coplanar and adjoin with each other.   
     
     
         10 . The heat dissipation device as claimed in  claim 9 , wherein each of the heat pipes has a U-shaped configuration, a bottom portion of the U-shaped configuration is the evaporating section, and two lateral portions of the U-shaped configuration are condensing sections. 
     
     
         11 . The heat dissipation device as claimed in  claim 9 , wherein each of the heat pipes further comprises a curved section connected between the evaporating section and the condensing section thereof. 
     
     
         12 . The heat dissipation device as claimed in  claim 11 , wherein the curved sections of the heat pipes are radially arranged and angled with each other, whereby the condensing sections of the heat pipes are spaced from each other. 
     
     
         13 . The heat dissipation device as claimed in  claim 11 , wherein the fixing seat further comprises a reinforcement portion enclosing the curved section of each of the heat pipes. 
     
     
         14 . The heat dissipation device as claimed in  claim 9 , wherein the evaporating section of each of the heat pipes has two vertical lateral walls to enable the vertical lateral walls of the heat pipes tightly joint with each other. 
     
     
         15 . The heat dissipation device as claimed in  claim 14 , wherein the fixing seat further comprises an enclosing portion enclosing the lateral walls of the two outermost heat pipes. 
     
     
         16 . The heat dissipation device as claimed in  claim 15 , wherein the enclosing portion of the fixing seat has a bottom edge coplanar with the heat absorbing surfaces of the evaporating sections of the heat pipes. 
     
     
         17 . The heat dissipation device as claimed in  claim 9 , wherein each of the heat conducting fins defines a through hole to allow the condensing section of each of the heat pipes pass therethrough. 
     
     
         18 . The heat dissipation device as claimed in  claim 17 , wherein an annular flange extends upwardly from a circumference edge defining the through hole of each of the heat conducting fins. 
     
     
         19 . A heat pipe assembly, comprising:
 a plurality of U-shaped heat pipes, each having an evaporating section, two condensing sections extending upwardly from two ends of the evaporating section and two curved connection sections connected between each of the condensing sections and one end of the evaporating section, the evaporating sections being parallel to and adjoining with each other, bottom surfaces of the evaporating sections of the heat pipes being coplanar and adjoining with each other, a top surface of the evaporating section of each of the heat pipes having a top edge; and   a fixing seat comprising a base and two enclosing portions extending outwardly from two opposite ends of the base, the base having a bottom surface combing with the top edge of the evaporating section of each of the heat pipes, each of the two enclosing portions enclosing the curved connections of the heat pipes located at a corresponding side of the base of the fixing seat.   
     
     
         20 . The heat pipe assembly as claimed in  claim 19 , wherein the fixing seat further comprises an enclosing portion enclosing the lateral walls of the outermost two of the heat pipes.