Flat Heat Pipe Radiator and Portable Computer

Abstract

A flat heat pipe radiator and a new kind of portable computer are provided. The air convective extended heat exchange surface of the radiator surrounds the fan impeller and is facing the air outlet of the impeller, the heat transport distance in heat pipe is shortened, the fan shell and the diffusion channel in the shell can be left out, so the size, weight and cost of the radiator are decreased effectively. The restrictions to a radiator when installing are reduced, which helps to implement the standardization of the radiator series. The new kind of portable computer helps to decrease weight and thickness and improve the heat dissipation further.

What is claimed is: 
     
         1 . A flat radiator with heat pipe for cooling electronic chips, comprising at least one heat pipe, at least one air convective extended heat exchange surface and one or more fans which are a kind of the centrifugal type fan,
 wherein said air convective extended heat exchange surface surrounds the impeller of said fan, and is facing the air outlet of said impeller; and   more than half of outer circle of said impeller is surrounded by said air convective extended heat exchange surface.   
     
     
         2 . The radiator, as recited in  claim 1 , wherein said air convective extended heat exchange surface adopts a pin structure 
     
     
         3 . The radiator, as recited in  claim 1 , wherein said air convective extended heat exchange surface adopts a fin structure, said fins surrounding said impeller in an arc shape have a structure that the fin blades of said fins are curved or bended and the channel between the two adjacent curved or bended fin blades is not straight, and the air inlet front edge of said fin blade curves or bends against the rotating direction of said impeller. 
     
     
         4 . The radiator, as recited in  claim 1 , wherein said air convective extended heat exchange surface adopts a fin structure, said fins surrounding said impeller in an arc shape have a structure that the fin blades of said fins incline toward the rotating direction of said impeller 
     
     
         5 . The radiator, as recited in  claim 1 , wherein said air convective extended heat exchange surface adopts a fin structure, said fins have an intensifying air convection heat transfer structure that the surface of the fin blade of said fin is cut into several discontinuous segments to form a staggered short fin structure. 
     
     
         6 . The radiator, as recited in  claim 1 , wherein said air convective extended heat exchange surface adopts a fin structure, said fins have an intensifying air convection heat transfer structure that the surface of the fin blade of said fin is cut into several discontinuous segments to form a louvered short fin structure. 
     
     
         7 . The radiator, as recited in  claim 6 , wherein the bend direction of said louvered fin is against the rotating direction of said impeller to form the edge of air inlet being bended against the rotating direction of said impeller. 
     
     
         8 . The radiator, as recited in  claim 1 , wherein said heat pipe is made of two metallic plates, the two metallic plates are connected together with buckle and welding, and there are welding points at the middle of said heat pipe inside. 
     
     
         9 . The radiator, as recited in  claim 1 , wherein said heat pipe is a kind of plate type, a part of said heat pipe at said fan is concave and a part of said fan is within the concave. 
     
     
         10 . A portable computer, comprising:
 a mainframe which is a flat-panel computer;   a keyboard, and a screen cover having a backside edge which is adjacent to the downside of said mainframe when said mainframe and said screen cover are folded together,   wherein said keyboard is set on the inside of said screen cover; and said mainframe and said screen cover are connected by a linking device;   wherein when said mainframe and said screen cover are folded together, said screen cover covers the display screen of said mainframe and said keyboard is covered by said mainframe;   wherein when said mainframe is opened to stand up to be a keyboard tying position, the downside of said mainframe moves toward said keyboard from the position that is adjacent to said backside edge of said screen cover, and stands up askew on the interior of said screen cover at the position between said keyboard and said backside edge of said screen cover, said screen cover is the base of said mainframe.   
     
     
         11 . The portable computer, as recited in  claim 10 , wherein the wall of the back shell of said mainframe is used as a convection and radiation heat dissipating surface of the CPU or GPU chip of said mainframe. 
     
     
         12 . The portable computer, as recited in  claim 11 , wherein a flat radiator with heat pipe as recited in  claim 1  is used for cooling the CPU or GPU chip of said mainframe, said heat pipe is set on said back shell. 
     
     
         13 . The portable computer, as recited in  claim 10 , wherein said linking device between said mainframe and said screen cover adopts a strut connection, said strut is also used to sustain the mainframe to stand up askew. 
     
     
         14 . The portable computer, as recited in  claim 10 , wherein said linking device between said mainframe and said screen cover adopts a sliding axle with runner connection, said sliding axle with runner connection has a structure for the downside of said mainframe moving along said screen cover when said mainframe being opened to be a keyboard tying position. 
     
     
         15 . The portable computer, as recited in  claim 10 , wherein said linking device between said mainframe and said screen cover adopts a structure that users separate said mainframe from said screen cover without any tool. 
     
     
         16 . The portable computer, as recited in  claim 14 , wherein said linking device between said mainframe and said screen cover adopts a structure that users separate said mainframe from said screen cover without any tool, said structure for said mainframe being separated from said screen cover is a structure that at the outside on said runner there is an opening for said sliding axle sliding out. 
     
     
         17 . The portable computer, as recited in  claim 10 , wherein there is a backup battery set on the inside of said screen cover and at the position between said keyboard and said backside edge of said screen cover, said backup battery is a plate structure. 
     
     
         18 . The portable computer, as recited in  claim 10 , wherein there is a backup battery covering the outside of said screen cover. 
     
     
         19 . The portable computer, as recited in  claim 10 , wherein at least an air inlet is opened at the back shell of said mainframe. 
     
     
         20 . The portable computer, as recited in  claim 10 , wherein there are electric touch points between the downside of said mainframe and said screen cover for the electrical connection between said mainframe and said screen cover.