Flat-plate heat pipe

Abstract

The invention provides a flat-plate heat pipe. The flat-plate heat pipe comprises an upper sheet and a lower sheet, wherein the upper sheet and the lower sheet are buckled together to form a complete heat pipe; the structures of the upper sheet and the lower sheet are symmetrical to each other and both comprise an evaporation area, an insulation area and a condensation area which are distributed in turn; the evaporation area and the insulation area are connected integrally; the condensation area and the insulation area are obviously separated and communicated with each other; a liquid charging port for charging a working medium is formed in the evaporation area; parallel grooves are formed in the evaporation area and the insulation area and pass through the evaporation area and the insulation area; the ends of the grooves in the evaporation area are communicated with each other, and the other ends of the grooves in the insulation area are communicated with the condensation area; fin columns are distributed in the condensation area; and an air outlet is formed on the edge of one side of the condensation area for vacuumizing during encapsulation or releasing non-condensable gas as necessary. The flat-plate heat pipe has the advantages of large heat transfer amount, high temperature evenness performance, high reliability and simple manufacturing process, and can effectively disperse the non-condensable gas and reduce generation of the non-condensable gas on the basis of ensuring the heat transfer performance.

Description

technical field [0001] The invention relates to a flat heat pipe, which belongs to the technical field of flat heat dissipation. Background technique [0002] The heat pipe was developed in the 1960s. It uses the latent heat of the phase change of the working medium for heat transfer and has a high unidirectional thermal conductivity. With the development of higher heat transfer performance and miniaturization of heat pipes, the improvement of flat heat pipes as heat transfer pipes has become a hot technology in the research and development of heat pipes. [0003] Flat heat pipes are light in weight, flexible in structure, have extremely high thermal conductivity and good isothermal performance, and are widely used in the cooling of electronic devices and thermal control systems of space technology. An important factor in the heat transfer capability of a heat pipe. [0004] According to the structure, heat pipes can be divided into: ordinary heat pipes, separated heat pip...

AI Technical Summary

Problems solved by technology

When the heat pipe is working, the generated gas flows to the condensation section and gathers to form an air lock, so that the effective condensation area is reduced, the thermal resistance is increased, the heat transfer performance is deteriorated, and the heat transfer capacity is reduced or even fails.

[0006] (2) Deterioration of the physical properties of the working medium

However, the above-mentioned "Platform Loop Heat Pipe (1)" has the problems of complex structure, poor reliability, and inability to effectively disperse non-condensable gases.

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