Heat fin

Abstract

The invention discloses a heat fin, which comprises two side panels, a frame for connecting the two side panels, a capillary structural layer and a phase changing working medium, wherein the two side panels and the frame form a hollow thin-plate shell; the capillary structural layer is closely attached onto the inner wall of the shell; the phase changing working medium is sealed in the shell; a local part of the edge of each side panel or a local part of the frame is used as an evaporation area, and the rest part of each side panel or the rest part of the shell is used as a condensation area. Due to the adoption of the heat fin, the area of a steam conveying passage, the reflux width of the liquid working medium and the direct heat radiation area of the condensation area are increased, the distance from the center of the evaporation area to the edge of the evaporation area is shortened, the heat conduction limit is greatly improved, and a higher heat flow density is obtained.

Description

technical field [0001] The invention relates to a phase change heat transfer device, in particular to a heat-wing. Background technique [0002] Compared with solid metals with high thermal conductivity, phase change heat transfer devices have higher equivalent thermal conductivity and better heat dissipation performance. It relies on the phase change of its internal liquid working medium to conduct heat, and has high thermal conductivity and excellent isothermal properties. And other advantages, are widely used in industry. At present, heat pipes and vapor chambers are more commonly used heat dissipation devices in phase change heat transfer devices. [0003] see figure 1 A typical heat pipe consists of a tube shell 11, a capillary structure 12 and a phase-change working medium 13 sealed in the tube. The manufacture of the heat pipe usually first vacuumizes the inside of the tube and then fills it with a suitable phase-change working medium 13, so that the capillary stru...

AI Technical Summary

Problems solved by technology

However, due to the longer distance from the center of the vapor chamber evaporation area to the edge of the evaporation area, the center of the evaporation area of ​​the vapor chamber will evaporate earlier, resulting in a lower heat transfer limit of the vapor chamber

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