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Special-shaped multi-dimensional phase change radiator

A heat sink and dimensioning technology, applied in indirect heat exchangers, heat exchange equipment, lighting and heating equipment, etc., can solve problems such as large temperature difference, low heat exchange efficiency of fins, uneven heat distribution, etc., and achieve reduction Effect of temperature difference, improvement of heat exchange efficiency, and low overall efficiency

Pending Publication Date: 2020-06-09
上海鹍通电子科技有限公司
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  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a special-shaped multi-dimensional phase change radiator to solve the existing natural convection radiator, the heat distribution is very uneven in the natural convection application, the high temperature area is mainly concentrated in the upper middle area of ​​the substrate, and the fin heat exchange The efficiency is not high, the temperature difference is large, etc.

Method used

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Embodiment 1

[0045] Embodiment one (comparative example):

[0046] In the application of natural convection heat dissipation, it is often applied to heat dissipation with multiple heat sources, and the heat sink has a relatively high vertical height such as figure 1It is a conventional natural convection radiator shape structure, radiator structure size: width 200 ~ 650mm x height 200 ~ 700mm x depth 45 ~ 120mm (fin height), tooth bottom thickness: 1.5 ~ 3.5; tooth top thickness: 1.0 ~ 2.0mm ;Teeth pitch: 12~18mm; The fins of this radiator are generally arranged vertically from bottom to top, and grooves of 15~30mm are processed according to needs.

[0047] figure 2 image 3 Using the above model, the heat sink temperature gradient diagram and the fluid vector diagram are analyzed by natural convection simulation; from the temperature gradient distribution of the substrate, the temperature gradient of the heat source area increases continuously from bottom to top, while the temperature...

Embodiment 2

[0050] The principle of this special-shaped multi-dimensional phase change radiator: the phase change area of ​​the new special-shaped multi-dimensional phase change radiator is a vacuum-sealed sealed shell composed of a phase change substrate steam cavity and a phase change fin steam cavity, and the inner surface of the phase change substrate shell Sinter the multi-component sintered powder capillary layer, and inject a certain amount of phase change working fluid into the sealed shell. When the heating element works, heat is generated, which is transferred to the inner surface of the new special-shaped multi-dimensional phase change radiator through the phase change cold plate shell (the material is generally aluminum and aluminum alloy), and the heat is transferred to the capillary structure layer and the inner surface of the shell through heat conduction, thereby Heat exchange occurs with the working fluid, the working fluid absorbs heat, changes from a liquid phase to a va...

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Abstract

The invention relates to a special-shaped multi-dimensional phase change radiator, and belongs to the technical field of radiators. The special-shaped multi-dimensional phase change radiator comprisesa base plate and fins, wherein at least two groups of fins are vertically fixed on the base plate, straight grooves are formed between the adjacent groups of fins, and the fins are not arranged at the grooves; an included angle is formed between each fin and each groove, and the included angle is an acute angle; and a first cavity is formed in the base plate, a second cavity is formed in each fin, the first cavity communicates with the second cavities, and a phase change working medium is stored in the first cavity and the second cavities. According to the special-shaped multi-dimensional phase change radiator, the problems that an existing natural convection radiator is very non-uniform in heat distribution in a natural convection application, the high-temperature area is mainly concentrated in the upper and middle part of the base plate, the heat exchange efficiency of the fins is not high, and the temperature difference is large are solved.

Description

technical field [0001] The invention relates to a special-shaped multi-dimensional phase change radiator, which belongs to the technical field of radiators. Background technique [0002] The current conventional air-cooled heat dissipation is mainly forced air-cooled heat dissipation and natural convection heat dissipation. Other external forces such as fans cause fluid movement to dissipate heat, which is called forced convection heat dissipation; forced air-cooled heat dissipation often uses fans to force the fluid to flow through the radiator. Heat exchange with the heat sink takes heat out of the system. Due to the existence of forced convection power components such as fans, it will cause problems such as noise, safety, reliability, lifespan, and IP rating reduction. [0003] Natural convection heat dissipation refers to the flow caused by the uneven temperature field of the fluid itself without relying on external forces such as fans. The fluid participating in the h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D15/02F28F3/02
CPCF28D15/02F28F3/02
Inventor 孟劲功孟观辰
Owner 上海鹍通电子科技有限公司
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