3D vapor chamber structure applied to phase change cold storage device and manufacturing method of 3D vapor chamber structure

Abstract

The invention relates to a 3D vapor chamber structure applied to a phase change cold storage device and a manufacturing method of the 3D vapor chamber structure. The vapor chamber structure comprises an enhanced heat transfer shell and a cover plate mounted at the top of the enhanced heat transfer shell. The enhanced heat transfer shell is of a special-shaped structure which is integrally machined and formed, and the surface area of the special-shaped structure is large. A special-shaped closed space is formed by the enhanced heat transfer shell and the cover plate, and a 3D capillary core formed by sintering aluminum powder is arranged in the special-shaped closed space. A vapor chamber working medium filling pipe is arranged on the side face of the enhanced heat transfer shell. According to the technical scheme, the novel integrated 3D vapor chamber enhanced heat transfer structure based on the aluminum powder structure sintered core is constructed, enhanced heat transfer is achieved through gas-liquid phase change of a working medium in the special-shaped closed space, and the rapid heat transfer requirement of a phase change cold storage device and the temperature control requirement of a heat source device are met.

Description

technical field [0001] The invention relates to the technical field of phase-change heat transfer enhancement and vapor chambers, in particular to a 3D vapor chamber structure and a manufacturing method thereof applied to a phase-change cold storage device. Background technique [0002] With the development and wide application of short-term and intermittent working devices such as laser and infrared detection, the corresponding phase-change cold storage devices have also been rapidly developed. A typical phase change cold storage device mainly includes a shell, a phase change working medium (usually paraffin), a phase change enhanced heat transfer structure, etc. It uses the phase change latent heat of the phase change working medium to absorb the heat generated by the device, ensuring laser, infrared Reliable operation of other heat source devices. [0003] At present, the phase change enhanced heat transfer structure mostly adopts conventional aluminum fins, foamed coppe...

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Problems solved by technology

[0003] At present, the phase change enhanced heat transfer structure mostly adopts conventional aluminum fins, foamed copper, foamed graphite, etc. for heat transfer enhancement, but limited by the heat transfer limitation of the enhanced heat transfer structure material itself, the overall strengthening effect is limited, and for the needs of fast response For cold storage devices, the limitation of heat transfer bottleneck is more prominent, which directly affects the performance of the entire cold storage device.

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