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A processing method of an inflatable vapor chamber with a capillary structure

A technology of capillary structure and processing method, which is applied in the field of heat dissipation, can solve problems affecting the formation of capillary structure, deformation and crushing of fillers, etc., and achieve the effect of improving heat dissipation and avoiding deformation

Active Publication Date: 2021-03-26
常州恒创热管理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the processing of the vapor chamber usually sinters the filler in the cavity to form a capillary structure before hot rolling and inflation, but in the subsequent hot rolling process, the filler is easily deformed or even broken due to extrusion The situation, which affects the formation of capillary structure, which leads to poor heat dissipation effect of the vapor chamber

Method used

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  • A processing method of an inflatable vapor chamber with a capillary structure
  • A processing method of an inflatable vapor chamber with a capillary structure
  • A processing method of an inflatable vapor chamber with a capillary structure

Examples

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Embodiment 1

[0035] see Figure 1 to Figure 4 , Embodiment 1 of the present invention provides a method for processing an inflatable vapor chamber with a capillary structure, which specifically includes the following steps:

[0036] Step S1: prepare materials, prepare two substrates 1, in this embodiment, the two substrates 1 are aluminum plates, and the model of the aluminum plates is 3003.

[0037] Step S2: Printing and covering, cleaning and roughening one of the substrates 1, and printing anti-rolling agent 2 on the roughened surface of the substrate 1 according to the figure of the inflated cavity or flow path required by the process. The anti-rolling agent 2 is cured on the substrate 1 after being dried, and then another substrate 1 is covered on the substrate 1 on which the anti-rolling agent 2 is printed, so that the anti-rolling agent 2 is located between the two substrates 1 .

[0038] In this embodiment, the anti-rolling agent 2 is graphite emulsion or boron nitride emulsion. ...

Embodiment 2

[0057] see Figure 5 The difference between the processing method of an inflatable vapor chamber with a capillary structure provided in Embodiment 2 of the present invention and the processing method of an inflatable vapor chamber with a capillary structure in Embodiment 1 is that in this embodiment, A heat conduction plate 31 is provided on the outer surface of at least one of the two substrates 1 , and the heat conduction plate 31 and the substrate 1 connected thereto together constitute the copper-aluminum composite plate 3 . The thermal conductivity of the heat conducting plate 31 is higher than that of the substrate 1 . Understandably, the material of the heat conducting plate 31 may be copper or copper alloy. In this embodiment, the covering rate of the heat conduction plate 31 is 3 to 30%. It should be noted that the cladding ratio refers to the ratio of the thickness of the heat conducting plate 31 to the total thickness of the composite plate. When processing, it i...

Embodiment 3

[0063] The difference between the processing method of the inflatable vapor chamber with the capillary structure provided in the third embodiment of the present invention and the processing method of the inflatable vapor chamber with the capillary structure in the second embodiment is that in this embodiment, the The two substrates 1 and the heat conduction plate 31 are hot-rolled at the same time. After one of the substrates 1 is cleaned and roughened, the anti-rolling agent 2 is printed on the roughened surface of the substrate 1 and riveted with the other substrate 1 and the heat conduction plate 31 to conduct heat. Plate 31 is on the outside. During processing, it is only necessary to provide the heat conduction plate 31 to be rolled simultaneously with the two base plates 1 and to be inflated between the two base plates 1 .

[0064] In this embodiment, before hot rolling, the thickness of one substrate 1 is 1.5-3.0 mm, the thickness of the other substrate 1 is 1.0-2.0 mm,...

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Abstract

The invention discloses a processing method for a blowing type soaking plate with a capillary structure. The processing method specifically comprises the following steps of 1, preparing materials, specifically, two substrates are prepared; 2, printing and capping, specifically, a blocking agent is printed on the substrates, and the two substrates are capped, wherein the blocking agent is positioned between the two substrates; 3, hot rolling, specifically, the double-layer substrate is rolled and synthesized into a composite plate; 4, blowing, specifically, high-pressure gas is introduced intothe composite plate, so that a part printed with the blocking agent is expanded to form a cavity; 5, filling filler, specifically, filler is filled into the cavity of the composite plate, wherein thefiller comprises particles, and the melting point of the particles is higher than that of the substrates; and 6, sintering, specifically, the composite plate is heated, and the filler is sintered on the composite plate to form the capillary structure. The filler is filled after a blowing process and sintered in the cavity to form the capillary structure, so that the situation that the filler is deformed or even broken due to extrusion is avoided, the formation of the capillary structure is guaranteed, and the heat dissipation effect of the soaking plate is improved.

Description

technical field [0001] The invention relates to the technical field of heat dissipation, in particular to a processing method for an inflatable vapor chamber with a capillary structure. Background technique [0002] The soaking plate includes a plate structure composed of two metal substrates with a hollow airtight cavity. The airtight cavity is in a negative pressure state, and the cavity is filled with a phase-change working medium, and a part of the cavity is also left. The vapor chamber is usually a flat plate structure with a hollow cavity, and it can also be connected to the radiator through pipelines to enhance heat dissipation performance. [0003] One side of the vapor chamber is flat, and the other side may be provided with cooling fins. The bottom surface of the vapor chamber is attached to the heat source, and the liquid working medium in the vacuum chamber is quickly evaporated into steam after being heated in a negative pressure environment, and quickly diffu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28D15/04
CPCF28D15/046
Inventor 黄晓峰张尧徐栋刘飞
Owner 常州恒创热管理有限公司
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