Large-area and high-thermal-conductivity light and thin microgroove flat heat tube

Abstract

The invention discloses a large-area and high-thermal-conductivity light and thin microgroove flat heat tube, and belongs to the field of microgroove flat thermal control engineering. The large-area and high-thermal-conductivity light and thin microgroove flat heat tube comprises a microgroove shell, a microgroove cover plate and a liquid filling pipe, wherein the microgroove cover plate is fixedly mounted at the upper part of the microgroove shell; a reinforcing rib is arranged at the lower part of the microgroove cover plate; and the liquid filling pipe is fixedly mounted at the right side of the upper end of the microgroove shell. The invention provides the large-area and high-thermal-conductivity light and thin microgroove flat heat tube; firstly, a capillary structure, the cover plate and the shell are connected to form a complete sealing structure through modes of electronic beam welding, TIG welding and dissimilar metal brazing, so that the high heating flux can be realized, and the heat transfer on the larger heat transfer contact area is efficient and reliable; and the large-area and high-thermal-conductivity light and thin microgroove flat heat tube is relatively lighter in whole weight and higher in structural strength, can serve as a structural part and a bearing part, and is convenient for use. The large-area and high-thermal-conductivity light and thin microgroove flat heat tube reduces the system complexity, and improves the system reliability.

Description

technical field [0001] The invention relates to the field of thermal control engineering of a micro-channel flat plate, in particular to a large-area light and thin high-thermal-conduction micro-channel flat heat pipe. Background technique [0002] Heat pipes are an important part of thermal control systems and environmental control systems. Heat pipes are needed between the heat sources, cold sources, and heat sinks of each system to transfer heat, reduce system complexity, and improve system reliability. [0003] Heat pipes are currently widely used in thermal control systems such as aerospace, weaponry, and ground products. They are widely used in military and civilian fields. Compared with conventional heat pipes, flat heat pipes have a large thermal contact area, small thickness, and light weight. And other characteristics, it has its unique advantages in solving the heat transfer problem of concentrated point heat source and large area heat source. [0004] The curren...

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Problems solved by technology

[0004] The current flat heat pipe is filled with capillary wire mesh, and its internal wire mesh is made of sintered metal particles. The porosity and the number of through holes are limited by the existing technology and structure. Under the condition of using the same filling fluid, Wire mesh heat pipes limit their maximum heat flux

In addition, the processing method of the existing flat heat pipe adopts extrusion molding, which limits the flatness and maximum width of the flat heat pipe, and there is no reinforcing rib inside, making it unable to support the load, and cannot be used in some occasions that require load bearing

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