Flat loop Heat pipe

Abstract

A flat loop heat pipe is formed of a first capillary core, a second capillary core, a first support member, and a second support member. The first capillary core and the first support member constitute an evaporation room. The second capillary core and the second support member constitute a compensation room. In light of this structure, it is not difficult to activate circulation of thermal dissipation under low-watt heat source and the first capillary core can avoid dry-out phenomenon.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates generally to heat-dissipating technology, and more particularly, to a flat loop heat pipe.[0003]2. Description of the Related Art[0004]A conventional loop heat pipe (LHP) is an effective heat-dissipating device and generally composed of an evaporator, a vapor line, a condenser, and a liquid line, all of which are connected and communicated with one another to become a loop containing a working fluid. The evaporator includes a capillary structure connected with a heat source. A compensation chamber is provided between the liquid line and the capillary structure. When the evaporator absorbs the heat from the heat source, the working fluid inside the LHP also absorbs the heat from the heat source to produce vapors. The vapors flow through a pipeline from the evaporator toward condenser chamber and then give out the heat at the condenser to be condensed and converted into liquid, and then the l...

AI Technical Summary

Benefits of technology

[0006]The primary objective of the present invention is to provide a flat LHP, which can prevent circulation of thermal dissipation from difficult activation.

[0007]The secondary objective of the present invention is to provide a flat LHP, which can enhance the heat-dissipating performance.

[0009]In light of the above structure, vapors generated from the working fluid under a heat source of relatively low wattage can still travel to the evaporation room, such that the flow resistance of the vapors is too little to cause overgreat pressure partially inside the evaporation room and to make it difficult for activating the circulation of thermal dissipation. Besides, the second capillary core is stopped against the first capillary core without contact with the heat source, such that no evaporation happens and then the second capillary core keeps absorbing the working fluid located in the compensation room to reinforce supplement of the working fluid required by the first capillary core. In this way, it can prevent the evaporation room from dry-out to further enhance the heat-dissipating performance of the flat LHP.

Problems solved by technology

In light of the above structure, vapors generated from the working fluid under a heat source of relatively low wattage can still travel to the evaporation room, such that the flow resistance of the vapors is too little to cause overgreat pressure partially inside the evaporation room and to make it difficult for activating the circulation of thermal dissipation.

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