Plastic panel vapor chamber and making method thereof

Abstract

The invention belongs to the technical field of heat exchange, and particularly discloses a plastic panel vapor chamber. The plastic panel vapor chamber comprises a chamber body and a packaging part.The chamber body and the packaging part are used in cooperation to seal the chamber body. The chamber body is vacuumed and is filled with working media. Capillary structures are arranged on an inner surface of the chamber body. The working media can carry out heat absorption and heat transmission through phase changes. The chamber body is made of heat-conductive plastic with the heat conductivitycoefficient of 3W / (m.K) to 50 W / (m.K). Compared with the prior art, according to the plastic panel vapor chamber, because the chamber body is made of the heat-conductive plastic with the heat conductivity coefficient of 3W / (m.K) to 50 W / (m.K), the plastic panel vapor chamber has the advantages of being light in weight, simple in manufacturing technology, low in manufacturing cost and controllablein manufacturing accuracy; because the chamber body can be formed by adopting extrusion, and the packaging part is formed in an injection molding manner, the production efficiency can be greatly improved; because when production of various sizes of vapor chambers needs to be carried out, it is only needed that simple cutting treatment is carried out later, compared with a production technology with a metal material, the number of molds is greatly lowered, the cost is greatly reduced, and overall, obvious effects are achieved on energy saving and production cost reduction.

Description

technical field [0001] The invention belongs to the technical field of heat exchange, and in particular relates to a soaking plate and a manufacturing method thereof. Background technique [0002] With the development of information technology, the size of semiconductor components is getting smaller and smaller, while the power is getting bigger and bigger. At the same time, the calorific value is getting higher and higher, and the heat flux density per unit area is getting higher and higher. In order to make the components work well under the allowable temperature, various types of heat sinks are combined on the electronic components for heat dissipation. In the field of lighting, high-power light-emitting diodes (LEDs) have the advantages of higher efficiency, energy saving and longevity than traditional incandescent lamps and fluorescent lamps, so they are more and more widely used. However, the luminous efficiency of the light-emitting components of LED lamps is only 15...

AI Technical Summary

Problems solved by technology

At present, the existing vapor chamber structure is mostly manufactured by splicing and welding up and down, and the production process is complicated. In addition, this manufacturing method requires special molds to process parts of fixed size, resulting in high manufacturing costs.

[0007] 2) It is difficult and costly to control the high-precision structure in the production process of the vapor chamber made of metal

[0008] 3) The high density of the metal material makes the vapor chamber heavy, which limits its application in special scenarios such as electronics, automobiles, LEDs, and aerospace cooling products

[0009] 4) The heat dissipation capacity is limited. At present, the heat source and the condensation area of ​​the vapor chamber are not actually in the same plane, which leads to the fact that the condensed and reflowed working fluid actually flows back to the opposite area of ​​the heat source, which will cause the overall temperature of the vapor chamber to decrease. Reduced heat transfer efficiency

[0010] 5) When vapor chambers made of metal materials are sealed and connected to the metal working fluid filling interface by cold pressing and other processes, the material of the metal working fluid filling interface has a great influence on the connection effect and efficiency. If the material is hard, The sealing effect of the cold-pressed connection will be affected. If the material is soft, it will be easily crushed, which will affect vacuuming and filling.

However, on the one hand, this patented technical solution is suitable for occasions where there is a height difference between the first channel and the second channel. channel or the second channel, the cooling effect is limited due to the heat dissipation method. On the other hand, the structural design of each channel in the embodiment is relatively complicated. In actual use, only the metal injection molding process can be used, the mold complexity is high, the precision requirement is high, and the metal Material control is more difficult

In addition, the material of the uniform temperature plate in this patent is made of metal, which also has the aforementioned defects

[0013] This shows that above-mentioned existing vapor chamber obviously has inconvenience and defect, needs to be improved badly

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