Flat panel liquid absorption core with complex structure and manufacturing method of flat panel liquid absorption core

A composite structure and liquid absorbing core technology, applied in the field of heat transfer, can solve the problems of poor control of pore structure, complex double pore structure, complex process, etc. simple effect

Pending Publication Date: 2019-09-17
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is suitable for the manufacture of traditional heat pipe liquid-absorbing wicks, which are designed and manufactured with complex double-pore structures, and the pore structure cannot be well controlled
Chinese Patent No. CN106871675A discloses a multi-layer composite liquid-ab

Method used

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  • Flat panel liquid absorption core with complex structure and manufacturing method of flat panel liquid absorption core
  • Flat panel liquid absorption core with complex structure and manufacturing method of flat panel liquid absorption core
  • Flat panel liquid absorption core with complex structure and manufacturing method of flat panel liquid absorption core

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Embodiment 1

[0032] see figure 1 , an embodiment of the flat liquid-absorbent core with a composite structure provided by the example of the present invention, comprising: a thermally conductive substrate 1 , and a flat liquid-absorbent core 2 with a composite structure manufactured by 3D additive manufacturing.

[0033] (1) The pore structure of the flat liquid-absorbing core of the composite structure is drawn by 3D software, and imported into the 3D printing system for additive manufacturing after slicing.

[0034] (2) The flat liquid-absorbing core of the composite structure is directly clad on the heat-conducting substrate of the same material by 3D printing technology, and the composite pore structure manufactured effectively reduces the thermal resistance with the heat-conducting substrate.

[0035] (3) The flat liquid-absorbing core of the composite structure is manufactured by 3D printing technology, and the powder layer by layer is formed by laser line scanning and sintering. Eac...

Embodiment 2

[0044] In this embodiment, the manufacturing process of the flat liquid-absorbing core with composite structure is the same as that in Embodiment 1. The structure of the absorbent core is as Figure 4 As shown, the metal powder material for 3D printing is selected from aluminum alloy, stainless steel, titanium alloy or nickel alloy according to specific heat dissipation applications. The printed structure in this embodiment is a rectangular groove structure nested in a small square base hole structure. The manufacturing method is the same as in Example 1, and the small base holes are connected to each other. Micro-scale or nano-scale or micro-nano-composite pores on the wall of the small base pore structure can improve the capillary liquid absorption capacity, and cooperate with the channel structure to help reduce heat transfer resistance and improve heat transfer effect.

[0045] Those skilled in the art can clearly see that for the convenience of describing the manufacturi...

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Abstract

The invention relates to a flat panel liquid absorption core with a complex structure and a manufacturing method of the flat panel liquid absorption core. Based on the additive manufacturing technology, the liquid absorption core with the trans-scale three-dimensional step hole complex structure is designed, the complex hole structure and the capillary structure of the liquid absorption core are integrated, the heat dissipation capacity of parts is effectively promoted, the heat resistance can be reduced obviously, and the heat transfer efficiency is improved. Through three-dimensional software modeling, the metal 3D printing technology is adopted to manufacture the liquid absorption core with the complex structure, the liquid absorption core has the characteristics that structural design is flexible, the manufacturing method is simple and quick, the input cost is low, consumables are less, the liquid absorption core can be applied to heat dissipation components such as various forms of heat pipes and soaking plates, and heat dissipation and cooling of equipment with high heat flow density in the fields of electronics, machines and aerospace are satisfied.

Description

technical field [0001] The invention relates to the technical field of heat transfer, in particular to a flat liquid-absorbing core with a composite structure and a manufacturing method thereof. Background technique [0002] With the rapid development of electronic equipment, the power of electronic chips continues to increase, and its structure is increasingly miniaturized, which leads to a sharp increase in the heat flux of electronic chips, and the problem of chip failure due to excessive temperature is becoming more and more serious. How to improve electronic chips The ability to dissipate heat has become one of the key factors considered in the design of electronic devices. [0003] Compared with traditional air-cooled radiators, flat heat pipes and vapor chambers use the principle of phase change heat transfer, which has higher heat dissipation capacity and efficiency, and can meet the heat dissipation requirements of high-power electronic components. The working prin...

Claims

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Application Information

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IPC IPC(8): F28D15/02H05K7/20
CPCF28D15/02H05K7/20336H05K7/20509
Inventor 张莉张池刘厚励徐宏
Owner EAST CHINA UNIV OF SCI & TECH
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