Heat dissipating apparatus used in non-forced convection

Abstract

A heat dissipating apparatus used in non-forced convection includes a cooling plate assembly, an upper shielding plate, a lower shielding plate, a metal base, and heat pipes. The cooling plate assembly has a cutting opening. The upper and the lower shielding plates cover the cutting opening above and below the cooling plate assembly, respectively. The metal base is disposed below the lower shielding plate and has plural cooling fins. Each heat pipe has an evaporator section, a first condenser section, and a second condenser section. Each evaporator section is fixed to the metal base. Each condenser passes through the cooling plate assembly and is closed to two sides of the cutting opening. Therefore, the wind resistance is reduced and the friction between air flow and the cooling plates is decreased, which further enhances the whole performance of heat conduction and dissipation.

What is claimed is: 
     
         1 . A heat dissipating apparatus used in non-forced convection, comprising:
 a cooling plate assembly having a cutting opening disposed at the center thereof;   an upper shielding plate covering the cutting opening correspondingly above the cooling plate assembly;   a lower shielding plate covering the cutting opening correspondingly below the cooling plate assembly;   a metal base disposed below the lower shielding plate and having a plurality of cooling fins; and   a plurality of heat pipes, each having an evaporator section, a first condenser section, and a second condenser section, wherein the first and the second condenser sections individually extend from two ends of the evaporator section, wherein each of the evaporator sections is fixed to the metal base, wherein the first condenser sections pass through the cooling plate assembly and are disposed close to one side of the cutting opening, wherein the second condenser sections pass through the cooling plate assembly and are disposed close to the other side of the cutting opening.   
     
     
         2 . The heat dissipating apparatus used in non-forced convection according to  claim 1 , wherein the cooling plate assembly has a plurality of cooling plates stacked mutually, wherein a plurality of connecting holes are formed on the respective cooling plates close to two sides of the cutting opening, wherein the first and the second condenser sections individually pass through the respective connecting holes. 
     
     
         3 . The heat dissipating apparatus used in non-forced convection according to  claim 2 , wherein a surrounding wall is formed around the perimeter of each of the connecting holes of the cooling plates, wherein a fluid channel is formed between any two adjacent cooling plates through the corresponding surrounding wall. 
     
     
         4 . The heat dissipating apparatus used in non-forced convection according to  claim 2 , wherein a front end and a rear end of each of the cooling plates are individually provided with an arced side. 
     
     
         5 . The heat dissipating apparatus used in non-forced convection according to  claim 4 , wherein the arc radii of the arced sides of any two adjacent cooling plates are different such that an uneven arced surface is formed on a side of the cooling plate assembly. 
     
     
         6 . The heat dissipating apparatus used in non-forced convection according to  claim 2 , wherein a front end and a rear end of each of some cooling plates are individually provided with an arced side, wherein a front end and a rear end of each of the other cooling plates are individually provided with a straight side, wherein the cooling plates having arced sides and having straight sides are stacked alternately. 
     
     
         7 . The heat dissipating apparatus used in non-forced convection according to  claim 2 , wherein a plurality of first throughholes are formed on the upper shielding plate corresponding to the connecting holes, wherein a plurality of second throughholes are formed on the lower shielding plate corresponding to the connecting holes, wherein the first and the second condenser sections pass through the first and the second throughholes. 
     
     
         8 . The heat dissipating apparatus used in non-forced convection according to  claim 1 , wherein the first and the second condenser sections of any two adjacent heat pipes are disposed inversely and dislocated from each other in the cooling plate assembly. 
     
     
         9 . The heat dissipating apparatus used in non-forced convection according to  claim 1 , wherein the metal base comprises a lower conductive seat and an upper conductive seat assembled with the lower conductive seat correspondingly, wherein the cooling fins are disposed on the upper conductive seat. 
     
     
         10 . The heat dissipating apparatus used in non-forced convection according to  claim 9 , wherein a plurality of first grooves are formed on the lower conductive seat and a plurality of second grooves are formed on the upper conductive seat, wherein the second grooves are individually disposed corresponding to the first grooves to accommodate the evaporator sections of the heat pipes. 
     
     
         11 . The heat dissipating apparatus used in non-forced convection according to  claim 1 , further comprising a handle assembly which is fixed to the metal base and covers the top of the upper shielding plate. 
     
     
         12 . The heat dissipating apparatus used in non-forced convection according to  claim 11 , wherein the handle assembly comprises a frame, a bent plate, and a handle, wherein the bent plate is fixed to the metal base and bent and extended to cover the top of the upper shielding plate, wherein the frame is disposed above the bent plate, wherein the handle is fixed above the bent plate and disposed in the middle of the frame.