Cylindrical heat pipe structure

Abstract

A cylindrical heat pipe structure includes a hollow pipe body. A working fluid is contained in the pipe body. Several trenches are formed on the inner surface of the pipe body. The cylindrical heat pipe structure further includes several rib pillars, which are powder sintered on the inner surface of the pipe body. The rib pillars are extended from the inner surface of the pipe body toward the center of the pipe body. A porous wick structure is formed on the surface of said rib pillars. The rib pillars are firmly sintered on the pipe body due to the presence of the trenches. The presence of trenches may also increase the condensation area, thereby increasing the condensation performance. The hot air generated by heat exchanging with the heat source may thus more rapidly be condensed into liquid. The condensed liquid may also rapidly move to the porous rib pillar and transfer to the bottom portion of the pipe body. The overall heat dissipation rate is thus enhanced.

Description

BACKGROUND OF THE INVENTION [0001] The present invention relates generally to a cylindrical heat pipe structure, and more particularly to a cylindrical heat pipe for exchanging heat with a heat generating electronic device (such as a CPU), having a structure to enhance the overall heat dissipation performance thereof. [0002] The rapid development of technological industries has succeeded in developing faster and faster computers. When a central processing unit is running in a faster speed, the heat generated during operation becomes higher. In order to dissipate the generated heat to the exterior of the computer mainframe and to maintain the central processing unit running under an operation temperature, a heat dissipation device is normally installed on the central process unit for assisting heat dissipation, so as to enhance the heat dissipation capacity. However, the faster a central processing unit runs, the greater amount of heat is generated. Conventional heat dissipation appa...

AI Technical Summary

Benefits of technology

"The present invention provides a cylindrical heat pipe structure with a wick structure that is firmly attached to the inner surface of the heat pipe to enhance liquid transfer speed. The heat pipe has a hollow pipe body with a plurality of trenches on its inner surface and a plurality of rib pillars that extend from the inner surface of the pipe body towards the center of the pipe body. The rib pillars have a porous wick structure that increases the condensation area, allowing hot air generated from heat exchange to quickly become liquid. The condensed liquid then moves to the bottom of the pipe body for subsequent heat exchange. The trenches effectively guide the condensed liquid to the rib pillars and also allow hot air to diffuse between the rib pillars. Overall, the invention improves heat transfer efficiency and enhances the performance of the heat pipe."

Problems solved by technology

However, the faster a central processing unit runs, the greater amount of heat is generated.

Conventional heat dissipation apparatus, which is composed of an aluminum extruded heat dissipater and a heat dissipation fan, may no longer support sufficient heat dissipation capacity for the central processing unit.

Thus, the heat dissipation rate is not satisfied.

Therefore, the heat dissipation rate is again not satisfied.

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