Flat-type heat pipe and wick structure thereof

Abstract

The present invention provides a flat-type heat pipe and a wick structure thereof. The flat-type heat pipe has a flat tube. The wick structure is arranged inside the flat tube along an axial line of the flat tube. The wick structure comprises a first wick portion and two second wick portions connected on both sides of the first wick portion. The thickness of the first wick portion is larger than that of the second wick portion. The first wick portion abuts against an upper inner wall of the flat tube. An air channel is formed between each of the second wick portions and the upper inner wall of the flat tube. The wick structure supports the inner wall of the flat-type heat pipe without providing additional supporting structure, so that the heat pipe can be made more compact.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a heat pipe, in particular to a flat-type heat pipe and a wick structure thereof.[0003]2. Description of Prior Art[0004]With the advancement of science and technology, electronic products and electronic elements are made more and more compact. Thus, heat pipes associated with these compact electronic products and electronic elements have to be made compact accordingly. According to the existing level in this art, a heat pipe whose thickness is smaller than 2 mm is referred to as a “super-thin heat pipe”, and a heat pipe whose thickness is larger than 2 mm is referred to as a “thin heat pipe”.[0005]However, according to the existing level in this art, the manufacture of thin heat pipes and super-thin heat pipes encounters problems as follows. Since the thin heat pipe or the super-thin heat pipe has a flat tube, the thickness of the flat tube is required to be small enough to manufacture a...

AI Technical Summary

Benefits of technology

[0007]The present invention is to provide a flat-type heat pipe, in which a wick structure is provided to support inner walls of the flat-type heat pipe. By this wick structure, it is unnecessary to provide an additional supporting structure, so that the flat-type heat pipe can be made more compact.

[0008]The present invention is to provide a flat-type heat pipe, in which a wick structure is provided. The wick structure can be manufactured easily and provide a path for allowing vapor-phase and liquid-phase working fluid to flow therein smoothly, thereby generating a good effect on heat conduction and liquid reflow.

Problems solved by technology

However, according to the existing level in this art, the manufacture of thin heat pipes and super-thin heat pipes encounters problems as follows.

Thus, if a supporting structure is provided in the flat tube, the thickness of the supporting structure may inevitably increase the thickness of the thin heat pipe or the super-thin heat pipe, so that the thin heat pipe or the super-thin heat pipe cannot be made compact sufficiently.

On the other hand, if the interior of the flat tube is not provided with a supporting structure, the strength of the flat tube is insufficient and may be recessed due to the external atmospheric pressure.

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