Highly effective flat-type loop heat-pipe apparatus

Abstract

This invention relates to one plate effective circuit heating tube device in conduction and electronic cooling field, which is characterized by the following: providing one plate circuit integration vapor and compensation structure; the first liquid absorptive chip acting as industry substances vapor, the second chips acts to enlarge the system capillary abstracting function with its holes structure easy to arrive the first absorptive chip and acts to reduce the system heat leakage; the first liquid absorptive chip comprises level groove and vertical groove.

Description

technical field [0001] The invention belongs to the field of heat transfer and cooling of electronic components, and in particular relates to a high-efficiency flat-plate loop heat pipe device. Background technique [0002] The loop heat pipe (LHP) is a new type of two-phase high-efficiency heat transfer device. It uses the capillary force generated by the capillary wick in the evaporator to drive the loop, and uses the evaporation and condensation of the working fluid to transfer heat. It can transfer a large amount of heat under the condition of small temperature difference and long distance. [0003] The evaporator of the loop heat pipe is in contact with the heat source, and a high-performance capillary wick (called the first liquid-absorbing wick) is installed inside the evaporator. The compensation chamber is connected to the evaporator, and the two are internally connected through another capillary wick (called the second liquid-absorbing wick). The condensation sec...

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Problems solved by technology

[0004] Generally, when the evaporation rate of the working fluid in the evaporator is greater than the return rate of its liquid return pipe, and the second liquid-absorbing core is difficult to suck the working fluid from the compensation chamber to the evaporator, it will cause dryness.

In addition, due to the excessive heat conduction of the wick, the compensation room temperature is too high, and the operating temperature of the entire loop heat pipe is often too high, which is often called a heat leakage problem.

In addition, the loop heat pipe is difficult to start at low wattage, and the maximum heat transfer rate is not high due to the excessive pressure drop of the channel, and the local pressure and temperature in the evaporator are too high due to the excessive local steam flow resistance after start-up

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