Composite copper mesh with three-dimensional porous wick structure and manufacturing method thereof

Abstract

A composite copper mesh with a three-dimensional porous capillary structure comprises a copper mesh structure and a three-dimensional porous capillary structure. The copper mesh structure is woven from a plurality of copper wires. The three-dimensional porous capillary structures are formed within the mesh. Each three-dimensional porous capillary structure comprises a plurality of chain-like copper structures and a plurality of block-like copper structures. The block-like copper structures are distributed among the chain-like copper structures to connect the block-like copper structures, chain-like copper structures, and copper wires. The thickness of the three-dimensional porous capillary structure is no greater than the thickness of the copper mesh structure. Compared to the prior art, the composite copper mesh with a three-dimensional porous capillary structure provided by this invention provides more significant capillary action. Further application in the fabrication of capillary structures for heat exchangers can increase the phase change efficiency of the heating zone and provide better two-phase flow circulation performance.

Claims

1. A method for manufacturing a composite copper mesh with a three-dimensional porous capillary structure, comprising: preparing a copper mesh structure woven from a plurality of copper wires, wherein the copper mesh structure has a plurality of grids; and forming a plurality of three-dimensional porous capillary structures and distributing them in corresponding grids, wherein each three-dimensional porous capillary structure comprises a plurality of chain-like copper structures and a plurality of block-like copper structures, the block-like copper structures being disposed and distributed between the chain-like copper structures to connect the block-like copper structures, the chain-like copper structures and the copper wires to each other, and the thickness of the three-dimensional porous capillary structure not exceeding the thickness of the copper mesh structure.

2. The method for manufacturing a composite copper mesh with a three-dimensional porous capillary structure as described in claim 1, wherein each piece of copper structure is a spherical copper structure or an irregular copper structure.

3. The method for manufacturing a composite copper mesh with a three-dimensional porous capillary structure as described in claim 1, wherein the step of forming a plurality of three-dimensional porous capillary structures and respectively filling the corresponding meshes further includes the following sub-steps: applying a slurry to each mesh; and drying, pyrolyzing and sintering the copper mesh structure coated with the slurry to form the three-dimensional porous capillary structure and fill the corresponding meshes.

4. The method for manufacturing a composite copper mesh with a three-dimensional porous capillary structure as described in claim 3, wherein the slurry comprises a first copper powder and cuprous oxide powder.

5. The method for manufacturing a composite copper mesh with a three-dimensional porous capillary structure as described in claim 4, wherein the copper powder of the slurry is sintered to form the blocky copper structure, and the cuprous oxide powder of the slurry is sintered to form the chain-like copper structure.

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