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Design and additive manufacturing method of gradient porous structure heat dissipation device based on temperature distribution

A temperature distribution, additive manufacturing technology, applied in the direction of additive processing, process efficiency improvement, energy efficiency improvement, etc., can solve problems such as no gradient design, reduce manufacturing cycle, improve heat transfer efficiency, eliminate welding requirements and The effect of assembly defects

Active Publication Date: 2021-01-08
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

Limited by the manufacturing constraints of traditional molding technology, the existing radiator cores usually adopt a uniform sheet structure, and there is no gradient design according to the temperature distribution

Method used

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  • Design and additive manufacturing method of gradient porous structure heat dissipation device based on temperature distribution
  • Design and additive manufacturing method of gradient porous structure heat dissipation device based on temperature distribution
  • Design and additive manufacturing method of gradient porous structure heat dissipation device based on temperature distribution

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Embodiment Construction

[0039] The technical solutions in the embodiments of the present invention will be described clearly and in detail below with reference to the drawings in the embodiments of the present invention. The described embodiments are only some of the embodiments of the invention.

[0040] The technical scheme that the present invention solves the problems of the technologies described above is:

[0041] Working principle and process:

[0042] Facing the heat exchanger's demand for high efficiency, compactness and light weight, the present invention proposes a gradient porous structure design method based on temperature distribution and a 3D printing manufacturing method. The way to achieve it is as figure 1 Shown:

[0043] 1. First collect the temperature distribution of the heating element, and establish the spatial matrix of the temperature distribution.

[0044] 2. Select a TPMS porous structure, and use the gradient algorithm to control the relative density of the porous stru...

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Abstract

The invention discloses a design and additive manufacturing method of a gradient porous structure heat dissipation device based on temperature distribution, and belongs to the technical field of heatexchange. The design and additive manufacturing method aims to overcome the defects of concentrated thermal stress and high temperature gradient of a heat exchanger designed by adopting the method, and have the advantages of compact structure, light weight, high heat exchange efficiency and the like. Firstly, a space matrix is established according to temperature distribution and mapped into the relative density of a porous structure, and the porous heat dissipation structure with continuous gradient change is obtained; then a design process of a typical radiator is given, and the design process comprises a Boltzmann fitting function algorithm and a structure design method; and finally, an additive manufacturing forming process of a high-strength and high-thermal-conductivity copper alloyis provided, and the device is integrally formed by adopting a selective laser melting process. The design method is suitable for occasions with special requirements for temperature uniformity, and high heat concentration can be effectively avoided; the gradient change porous structure also has the advantages of high specific surface area, light weight and high heat dissipation efficiency.

Description

technical field [0001] The invention belongs to the field of computer-aided design (CAD) and heat exchange technology, and in particular relates to gradient porous structure design and additive manufacturing molding technology based on temperature distribution. Background technique [0002] Triply Periodic Minimal Surface (TPMS) is a design method based on implicit functions, which has the characteristics of simple expression and efficient design. The porous structure it produces has the advantages of continuous structure, smooth surface, and less stress concentration. , the change of pore size and relative density can be realized conveniently by changing the parameters in the function. Many patents including patents (CN201811308405.6) and patents (CN201911407257.8) have given the expression of three-period minimal surfaces, realizing the design of porous structures, but these structural designs are all completed in the Cartesian coordinate system Yes, there is no structura...

Claims

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Application Information

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IPC IPC(8): B22F3/105B22F3/11B33Y10/00B33Y50/02
CPCB22F3/1109B33Y10/00B33Y50/02Y02P10/25
Inventor 刘飞王鑫李海青谢海琼
Owner CHONGQING UNIV OF POSTS & TELECOMM
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