Boiling cavity type radiator

Abstract

A fluidizing cavity radiation device includes a sealed cavity containing working fluid and a radiation piece set on the top of the cavity, in which, the sealed cavity includes an absorption base plate and a top cover, said base plate is set with an intensifying device for heat conduction inside of the cavity including several absorption units, the top cover is for transmitting heat from the radiation surface of the top of the inside wall of the cavity to outside, a side frame is set downward around the edge of the cover to connect to the heat absorption base plate and the cover in sealing and a curved buffer space is formed between the surrounding of the cover and the side frame.

Description

【Technical field】 [0001] The invention relates to a heat dissipation device, in particular to a boiling chamber type high-efficiency heat dissipation device. 【Background technique】 [0002] With the continuous development of the electronic information industry, high-tech electronic products are conducive to the trend of thinner, thinner, multi-functional, and faster operation. However, the heat released by electronic components (especially the central processing unit) per unit area (heat flux) There are also more and more, leading to further development must face the bottleneck of how to reduce the operating temperature of electronic components. In order to make high-tech electronic products play their due functions, designing high-efficiency and light-weight heat sinks has become the next generation in the industry. Important challenges for advanced electronics. [0003] At present, in the field of heat dissipation of computer microprocessors, many heat dissipation devices...

AI Technical Summary

Problems solved by technology

[0010] Since the heating area of ​​the high-heat flux heating element 20 is usually smaller than the bottom area of ​​the cavity 10', the fluid will be violently stirred in the boiling area in contact with the heating area, resulting in a gap between the cooling surface of the top cover of the cavity and the boiling fluid. The periodic density wave (density wave) is caused in between, which causes the boiling fluid to vibrate and contact on the heat dissipation surface, thus forming a discontinuous and intermittent condensation heat transfer mode that is not conducive to stable heat transfer, seriously affecting the efficiency of heat transfer

[0011] (3) The normal heat removal function cannot be ensured in the tilted state

[0012] In order to reserve the expansion space for endothermic boiling, the working fluid 15' in the cavity 10' cannot be filled. When the product is used in a tilted state deviated from the normal state, the working fluid level in the cavity 10' may be low. In the position of the heating element, the heat transfer function fails, causing the temperature of the heating element 20 to rise. If it is not handled properly, it may challenge the temperature limit of the safe operation of the heating element 20

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