Flat plate heat transfer device

Abstract

Disclosed is a flat plate heat transfer device, which includes a thermally conductive flat case installed between a heat source and a heat emitting unit and containing a working fluid evaporated with absorbing heat from the heat source and condensed with emitting heat to the heat emitting unit; and a mesh layer aggregate installed in the flat case and having a structure that a fine mesh layer for providing a flowing path of liquid and a coarse mesh layer for providing a flowing path of liquid and a dispersion path of vapor simultaneously are laminated. On occasions, the coarse and the fine mesh layers are alternately laminated repeatedly, and the fine mesh layer is replaced with a wick structure. The coarse mesh layer is preferably a screen mesh layer with wire diameter of 0.2 mm ~ 0.4 mm and mesh number of 10 ~ 20. This device improves heat transfer performance.

Description

technical field [0001] The present invention relates to a flat plate heat transfer device capable of dissipating heat from a heat source by circulating a working fluid through evaporation and condensation, and more particularly relates to a flat plate heat transfer device having a thinner structure and good heat transfer and A flat plate heat transfer device with a heat dissipation structure. Background technique [0002] Recently, electronic devices such as notebook computers or PDAs have become smaller and thinner with the development of integration technology. Furthermore, while demands for high response and functional improvement of electronic devices increase, energy consumption tends to increase. Therefore, when the electronic equipment is in operation, the electronic components therein generate a large amount of heat, so various flat heat transfer devices are used to dissipate the heat to the outside. [0003] A traditional example of a conventional flat-plate heat ...

AI Technical Summary

Problems solved by technology

If there is a significant difference between the time it takes for the condensed working fluid to return and the time it takes for the evaporated working fluid to diffuse, the flow rate of the working fluid that can be circulated per unit time decreases, and thus the heat transfer performance of the flat plate heat transfer device also decreases. reduce

[0012] In addition, since the inside of the flat plate heat transfer device 10 is almost decompressed to a vacuum, its ability to resist external impact is slightly weaker.

Therefore, if the flat-plate heat transfer device 10 is hit during manufacture or transportation, the metal casing 50 is easily crushed.

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