Heat transfer device

Abstract

A heat transfer device configured to be independently fixed and densely mounted. The heat transfer device includes: a main body formed of a metallic material and forming a tube sealed to maintain a vacuum therein; and a thermally conductive layer having elasticity and adhered around the main body.

What is claimed is: 
     
         1 . A heat transfer device comprising:
 a main body formed of a metallic material and forming a tube sealed to maintain a vacuum therein; and   a thermally conductive layer having elasticity and flexibility and adhered around the main body.   
     
     
         2 . The heat transfer device of  claim 1 , wherein the thermally conductive layer is a thermal sheet extending in a length direction of the main body with both widthwise ends of the thermal sheet being in contact with each other or separate from each other. 
     
     
         3 . The heat transfer device of  claim 1 , wherein the thermally conductive layer is adhered or bonded to the main body by dipping an outer surface of the main body in a thermally conductive liquid-phase rubber or resin in which thermally conductive particles are mixed and dispersed and then curing the thermally conductive liquid-phase rubber or resin, or by spraying the thermally conductive liquid-phase rubber or resin onto the outer surface of the main body and then curing the thermally conductive liquid-phase rubber or resin. 
     
     
         4 . The heat transfer device of  claim 1 , wherein the heat transfer device is a heat pipe, a heat spreader, or a vapor chamber. 
     
     
         5 . The heat transfer device of  claim 1 , wherein the thermally conductive layer is electrically insulative. 
     
     
         6 . The heat transfer device of  claim 1 , wherein the main body is inserted in an accommodation groove of a metal case such that a portion of the thermally conductive layer corresponding to a lower surface of the main body is brought into contact with a bottom of the accommodation groove and an upper surface of the main body is exposed for direct or indirect thermal contact with a heat source,
 wherein an outer surface of the thermally conductive layer has self-adhesion such that the thermally conductive layer is adhered to the bottom of the accommodation groove.   
     
     
         7 . The heat transfer device of  claim 6 , wherein portions of the thermally conductive layer corresponding to lateral sides of the main body are elastically brought into contact with both sidewalls of the accommodation groove. 
     
     
         8 . The heat transfer device of  claim 1 , wherein the thermally conductive layer is a thermally conductive silicone rubber or a thermally conductive acrylic resin. 
     
     
         9 . A heat transfer device comprising:
 a main body formed of a metallic material and forming a tube sealed to maintain a vacuum therein;   a first thermally conductive layer having elasticity and a self-adhesive outer surface and adhered to a surface of the main body; and   a second thermally conductive layer having elasticity and a self-adhesive outer surface and adhered to an opposite surface of the main body.   
     
     
         10 . The heat transfer device of  claim 9 , wherein the first thermally conductive layer has greater self-adhesion and less thermal conductivity than the second thermally conductive layer, and
 the first thermally conductive layer is brought into contact with a cooling case, and the second thermally conductive layer is brought into contact with a heat source.   
     
     
         11 . A heat transfer device comprising:
 a main body formed of a metallic material and forming a tube sealed to maintain a vacuum therein;   a thermally conductive layer having elasticity and flexibility and adhered around the main body; and   a thermally conductive particle layer formed of thermally conductive particles attached to an outer surface of the thermally conductive layer.   
     
     
         12 . The heat transfer device of  claim 11 , wherein the thermally conductive particles are metal powder, carbon powder, ceramic powder, graphite power, or carbon fiber having high thermal conductivity.