Evaporator and loop type heat pipe applying same

Abstract

The invention disclose a loop type heat pipe comprising an evaporator and a pipeline, wherein the pipeline connects two opposite ends of the evaporator to form a loop, working fluid is filled in the loop, the evaporator comprises a hollow shell, a clapboard is arranged in the hollow shell and divides the interior of the evaporator into an evaporating chamber and a compensating chamber, and a capillary structure is arranged in the evaporating chamber and extends into the compensating chamber through the clapboard. Compared with the prior art, the capillary structure in the evaporating chamber extends the compensating chamber after passing through the clapboard, so that the area of the capillary structure exposed in the compensating chamber is reduced, the heat transferred into the compensating chamber is reduced and the effective pressure difference of the loop type heat pipe is efficiently guaranteed; in addition, the invention reduces the number of bubbles generated on the surface of the capillary structure in the compensating chamber, efficiently guarantees the permeability of the working liquid in the compensating chamber, prevents the working liquid of the evaporating chamber from being dried, prolongs the service life of the loop type heat pipe, and improves the working efficiency of the loop type heat pipe.

Description

technical field [0001] The invention relates to a cooling device, in particular to an evaporator and a loop heat pipe using the evaporator. Background technique [0002] With the continuous improvement of the power of electronic components such as central processing unit (CPU), the problem of heat dissipation has been paid more and more attention by people. A loop heat pipe is used as an effective heat transfer element in the field of heat dissipation due to its efficient heat conduction performance. [0003] The capillary structure of the traditional loop heat pipe is attached to the inner tube wall of the loop heat pipe, and the evaporation chamber and the compensation chamber are integrated. When the loop heat pipe is working, the capillary structure located in the evaporation chamber absorbs heat, and the capillary structure of the evaporation chamber absorbs heat. Part of the heat in the evaporation chamber is absorbed by the working fluid in the evaporation chamber, a...

AI Technical Summary

Problems solved by technology

[0003] The capillary structure of the traditional loop heat pipe is attached to the inner tube wall of the loop heat pipe, and the evaporation chamber and the compensation chamber are integrated. When the loop heat pipe is working, the capillary structure located in the evaporation chamber absorbs heat, and the capillary structure of the evaporation chamber absorbs heat. Part of the heat in the evaporation chamber is absorbed by the working fluid in the evaporation chamber, and the rest of the heat is transferred to the capillary structure in the compensation chamber, so that the working fluid in the compensation chamber evaporates, generating a pressure opposite to the predetermined working direction, reducing the heat loss of the loop heat pipe. At the same time, a large number of air bubbles are generated on the surface of the capillary structure of the compensation chamber. These bubbles affect the permeability of the working fluid in the compensation chamber, causing the working fluid in the evaporation chamber to dry out, resulting in a flow interruption phenomenon, so that the loop heat pipe fails.

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