Liquid absorbing core for embedded channels of heat pipe

Abstract

The invention discloses a liquid absorbing core for embedded channels of a heat pipe, which comprises a heat pipe wall, a steam chamber, common channels and ribs, wherein the common channels are arranged on the heat pipe wall; the common channels are separated by the ribs; embedded channels are formed on the ribs; the depth of each embedded channel is smaller than the depth of each common channel; and each embedded channel is in a triangular shape or an inverted trapezoidal shape. The novel capillary core heat pipe which has optimal combination of omega-shaped common channels and inverted trapezoidal or triangular embedded channels can eliminate the short circuit phenomenon so that the heat flow can smoothly reach an evaporative thin liquid film region to greatly increase the evaporative heat transfer area, thereby improving the heat transfer capacity of the heat pipe; and the space above the ribs among the common channels can be more effectively utilized to relieve the weight of the heat pipe. In addition, because gas-liquid interfaces can move inside and outside the channels freely, the liquid can be filled more conveniently and flexibly.

Description

technical field [0001] The invention relates to a heat dissipation device used in aviation thermal control systems, cooling of electronic components and heating, ventilating and air-conditioning systems, and can be widely used in non-pump, long-distance heat transport and transfer in civil systems. Background technique [0002] The principle of heat pipe technology is to use the evaporation and condensation of the working fluid to transfer heat. Since the latent heat generated by evaporation and condensation is quite large, the thermal conductivity of the heat pipe is hundreds of times that of the copper block. Axial channel heat pipes are among various types of heat pipes (sintered metal powder wick heat pipes, wire mesh wick heat pipes, dry channel type wick heat pipes, radial heat pipes, modulated wick heat pipes) with relatively simple processing and excellent heat transfer characteristics. Better heat pipes. At present, the power of electronic equipment is getting high...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the heating power of the heat source is too large, and under the same limited heat source area, the maximum heat transfer capacity provided by the channel heat pipe cannot meet the heat dissipation requirements due to the limitation of its own structural conditions, thus destroying the stability of the system

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