Heat dissipation device with heat pipe

Abstract

An exemplary heat dissipation device includes a base and fasteners. The base includes a bottom plate, a top plate, a heat pipe, and a frame. The heat pipe is sandwiched between peripheries of the bottom plate and the top plate. The frame is sandwiched between the bottom plate and the top plate. The frame surrounds the heat pipe. The fasteners extend through the top plate, the frame and the bottom plate for fixing the heat dissipation device to a heat-generating component.

1 . A heat dissipation device comprising:
 a base comprising a bottom plate, a top plate, a heat pipe sandwiched between the bottom plate and the top plate, and a frame sandwiched between peripheries of the bottom plate and the top plate and surrounding the heat pipe; and   a plurality of fasteners extending through the top plate, the frame and the bottom plate for fixing the heat dissipation device to a heat-generating component.   
     
     
         2 . The heat dissipation device of  claim 1 , wherein the frame comprises a plurality of supporting portions, and each of the supporting portions is sandwiched between corresponding edge portions of the bottom plate and top plate. 
     
     
         3 . The heat dissipation device of  claim 2 , wherein a plurality of connecting portions is formed at corners of the frame, the fasteners extending through the connecting portions of the frame. 
     
     
         4 . The heat dissipation device of  claim 2 , wherein each of the supporting portions has a transversewidth less than that of the heat pipe. 
     
     
         5 . The heat dissipation device of  claim 1 , wherein the heat pipe has a flat bottom wall in contact with the bottom plate and a flat top wall in contact with the top plate. 
     
     
         6 . The heat dissipation device of  claim 1 , wherein the top plate and the bottom plate each are rectangular, and the frame has a rectangular profile corresponding to that of the bottom plate and the top plate. 
     
     
         7 . The heat dissipation device of  claim 6 , wherein the frame has outer edges matching with edges of the bottom plate and top plate. 
     
     
         8 . The heat dissipation device of  claim 1 , wherein each of the bottom plate and the top plate is a monolithic, one-piece body of copper, and the frame is a monolithic, one-piece body of aluminum. 
     
     
         9 . The heat dissipation device of  claim 1 , further comprising a fin assembly mounted on the top plate of the base, the fasteners extending through corners of the base. 
     
     
         10 . A base for absorbing heat from a heat-generating component, the base comprising:
 a bottom plate;   a top plate;   a heat pipe sandwiched between the bottom plate and the top plate; and   a frame sandwiched between peripheries of the bottom plate and the top plate and surrounding the heat pipe, the frame comprising a plurality of connecting portions at corners thereof, and a plurality of through holes being defined through the top plate, the connecting portions of the frame and the bottom plate for fasteners to extend through and fix the base to the heat-generating component.   
     
     
         11 . The base of  claim 10 , wherein each of the supporting portions has a width less than that of the heat pipe. 
     
     
         12 . The base of  claim 10 , wherein the heat pipe has a flat bottom wall in contact with the bottom plate and a flat top wall in contact with the top plate. 
     
     
         13 . The base of  claim 10 , wherein the frame has a rectangular profile corresponding to that of the bottom plate and the top plate. 
     
     
         14 . The base of  claim 13 , wherein the top plate and the bottom plate each are rectangular, and the frame has outer edges matching for edges of the bottom plate and top plate. 
     
     
         15 . The base of  claim 10 , wherein the bottom plate and the top plate each are integrally made of copper as one piece, and the frame is integrally made of aluminum. 
     
     
         16 . The base of  claim 10 , wherein the bottom plate, the top plate and the frame together form a hermetical chamber to contain working fluid between outer wall of the heat pipe and inner wall of the frame. 
     
     
         17 . A heat dissipation device comprising:
 a base comprising a bottom plate, a top plate, and a frame sandwiched between peripheries of the bottom plate and the top plate, the bottom plate, the top plate and the frame cooperatively defining a chamber therebetween;   a generally serpentine heat pipe received in the chamber and sandwiched between the bottom and top plates, wherein a size of a rectangular area within the frame occupied by the entire heat pipe is at least one half of a corresponding area of the chamber within the frame;   working fluid contained in the heat pipe; and   a plurality of fasteners configured to be seated on the top plate with portions of the fasteners extendable through the top plate, the frame and the bottom plate for fixing the heat dissipation device to a heat-generating component.   
     
     
         18 . The heat dissipation device of  claim 17 , wherein the chamber is hermetical and contains working fluid between an outer wall of the heat pipe and an inner wall of the frame. 
     
     
         19 . The heat dissipation device of  claim 17 , wherein the frame comprises a plurality of beams, and each of the beams is sandwiched between corresponding edge portions of the bottom plate and top plate. 
     
     
         20 . The heat dissipation device of  claim 17 , wherein a plurality of connecting portions is formed at corners of the frame, with the portions of the fasteners extendable through the connecting portions of the frame.