Plate loop heat pipe evaporator

Abstract

The present invention relates to a plate type loop heat pipe evaporator, the plate type loop heat pipe evaporator comprises: an evaporator shell, a capillary core, a liquid guide tube and a steam pipe; the evaporator shell has a plate structure, and the An inner cavity is formed in the shell of the evaporator, and the inner cavity includes a gas collection cavity, an evaporation area, a buffer zone and a liquid storage cavity; the capillary is arranged in the inner cavity, occupies the evaporation area and the The buffer zone; the capillary wick separates the gas-collecting chamber from the liquid storage chamber; the catheter is used to introduce the outflow liquid into the capillary; the steam in the gas-collecting chamber passes through The steam pipe flows out. The plate-type loop heat pipe evaporator of the present invention adopts a flat plate structure to solve the disadvantages of poor adhesion between the cylindrical evaporator and the wall surface and the additional temperature difference and thermal resistance caused by the saddle.

Description

technical field [0001] The invention belongs to the technical field of heat transfer, in particular, the invention relates to a plate-type loop heat pipe evaporator. Background technique [0002] The loop heat pipe is a high-efficiency heat transfer device based on phase change heat, which can transfer a large amount of heat under the condition of small temperature difference and long distance. It is widely used in thermal control systems in electronic devices, aerospace and other fields. [0003] The main structure of the loop heat pipe includes an evaporator, a liquid storage chamber, a gas-liquid pipeline and a condenser. The interior of the evaporator includes capillary cores, steam channels and other structures. The heat exchange is mainly carried out through two processes of evaporation and condensation of the working fluid, and at the same time, the continuous transportation of the liquid is realized by the capillary action of the porous material on the liquid worki...

AI Technical Summary

Problems solved by technology

The disadvantage is that when the cylindrical evaporator is used in conjunction with the load end surface, an additional saddle is required, which brings additional thermal resistance and temperature difference

[0005] The flat-plate evaporator can be attached to the heating wall, and the temperature is uniform. It is suitable for heat dissipation with limited space and high heat flux. However, due to its compact structure, the heat leakage from the heating surface to the liquid storage chamber through the side wall is serious.

Moreover, the internal pressure capacity of the flat plate structure is not good, and it is prone to deformation

As a result, the size of the existing flat-plate evaporators is generally small, and it is difficult to meet the heat dissipation requirements of large-sized planes

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