Coaxial capillary structure and ultra-thin heat pipe structure having the same

Abstract

A coaxial capillary structure and an ultra-thin heat pipe structure having the same are provided. The coaxial capillary structure is installed in an ultra-thin heat pipe and extended towards the length direction of a pipe body of the ultra-thin heat pipe, and includes: a primary transferring capillary part and a coaxially-arranged capillary part, wherein the primary transferring capillary part is composed of a plurality of fiber bundles for forming as an integral bundle, and the coaxially-arranged capillary part is formed through a plurality of weaving wires interwoven and reeled at the exterior of the primary transferring capillary part, thereby limiting each of the fiber bundles at the central portion of the coaxially-arranged capillary part for forming a compact structure. Accordingly, a better capillary transferring effect is provided.

Description

technical field [0001] The invention relates to a coaxial braided capillary structure, in particular to a coaxial braided capillary structure of an ultra-thin heat pipe with fiber bundles and the ultra-thin heat pipe structure. Background technique [0002] At present, since many 3C electronic products are designed to be light, thin, short, and small, the heat pipes used as internal heat dissipation or heat conduction also need to be thinned, so that they are like ultra-thin heat pipes (thickness is about 1.5mm or less). born. [0003] However, since the thickness of the ultra-thin heat pipe needs to be thinned, the capillary structure inside the heat pipe is also thinner and narrower in thickness, otherwise it is impossible to form a sufficient space for the vapor flow channel in the heat pipe. In the past, the capillary structure in the heat pipe was mainly composed of grooves, metal powder sintering, fiber bundles or metal meshes, or even mixed. Although these types of ...

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Problems solved by technology

Therefore, the previous coaxial braided capillary structure is only formed by interweaving a plurality of metal wires. Although the gaps between the metal wires can provide capillary transmission, but because the central part is a hollow long tubular structure, it can only be obtained after pressing. Flat and wide, or become a relatively loose capillary structure, it is still impossible to obtain a relatively dense capillary structure; if we change to weaving with fibers with a smaller diameter, although we can obtain greater capillary force, its small diameter bears more tension during weaving. Small, it is difficult to manufacture due to thread breakage during the weaving process, and the quality is also unstable

Therefore, it is still necessary to improve the problem of insufficient capillary transport effect when it is suitable for ultra-thin heat pipes.

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