A self-excited phase change thermal control cooling system

Abstract

The invention provides a self-excitation type phase change thermal control cooling system. The system comprises a heat taking evaporation module and a condensation cooling module, wherein a closed cavity for filling a working medium is formed therebetween; the heat taking evaporation module is positioned at one end part of the closed cavity, and consists of a heat taking baseplate and an evaporation end surface microstructure; and the evaporation end surface microstructure is arranged on an inner end surface of the heat taking baseplate. The system further comprises a capillary micro straight groove and a liquid accumulation and liquid supply groove ring; the condensation cooling module comprises a condensation side part and a condensation top plate; the condensation side part is positioned at the side edge of the closed cavity; the condensation top plate is positioned at the other end part of the closed cavity; and the inner end surfaces of the condensation side part and the condensation top plate are combined surfaces having a film liquid area and a dropping liquid area. As the capillary micro straight groove having high-strength phase change heat taking under fine scale is introduced, the critical heat flux density and the heat exchange coefficient are promoted, and the heat exchange capacity of a heat end is strengthened; and meanwhile, the drop type condensation is built at a condensation end for timely and effectively falling and updating drops, so that the condensation heat exchange effect is reinforced and promoted.

Description

technical field [0001] The invention relates to a self-exciting phase change thermal control cooling system. Background technique [0002] For thermal management under high heat flux density of tens of watts or even over a hundred watts per square centimeter, traditional air cooling technology needs to be equipped with large-area cooling fins, and the cooling module is bulky and heavy; although liquid cooling technology can meet the requirements to a certain extent, However, active technologies such as pumping pumps must be used, and there are specific requirements for pipeline construction and settings. Therefore, efficient heat transfer technology with appropriate dimensions must be sought. [0003] Phase change thermal control technology is a kind of high-efficiency heat transfer technology. It uses the principle of phase change. The working medium on the hot side is driven to evaporate through the heat absorption of the hot end, and the liquid-vapor phase change is gene...

AI Technical Summary

Problems solved by technology

However, the heat exchange capacity of the evaporation hot end, the heat exchange capacity of the condensation end and the condensate return method still need to be improved.

Images