Loop heat pipe heat-conducting component

Abstract

The invention discloses a loop heat pipe heat-conducting component. The loop heat pipe heat-conducting component mainly comprises an evaporator housing and an outer pipe, wherein the outer pipe is connected to the evaporator housing, so that the outer pipe and the evaporator housing form a loop; a copper powder-sintered capillary structure is arranged in the evaporator housing; and an exhaust hole is formed in one end of the copper powder-sintered capillary structure. The loop heat pipe heat-conducting component further comprises a capillary structure composed of heat-insulation fibers, wherein one side of the copper powder-sintered capillary structure is fixed, and other space in the evaporator housing is filled with the capillary structure composed of the heat-insulation fibers. According to the loop heat pipe heat-conducting component disclosed by the invention, due to the existence of the capillary structure composed of the heat-insulation fibers, a liquid flowing in the evaporator housing is absorbed by the capillary structure composed of the heat-insulation fibers and prevented from contacting with the evaporator housing, so that the heated-vaporized amount of the liquid is reduced, and then a pressure of an evaporation section is reduced, backflow resistance of a condensate is reduced, and heat-conducting efficiency is increased.

Description

technical field [0001] The invention relates to a heat conduction element, in particular to a loop heat pipe heat conduction element. Background technique [0002] The heat pipe heat conduction element is a kind of element that makes full use of the heat conduction principle and the rapid heat transfer property of the phase change medium, and quickly transfers the heat of the heating object to the heat source through the heat pipe. The current loop heat pipe heat conduction element includes the evaporator shell And the outer tube, the outer tube is connected to the shell of the evaporator, so that the outer tube and the shell of the evaporator form a loop, the shell of the evaporator is provided with a copper powder sintered capillary structure, and one end of the copper powder sintered capillary structure is provided with a vent hole , the operating principle is that the heat source is attached to the shell of the evaporator, the heat source heats the shell of the evaporato...

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Problems solved by technology

[0002] The heat pipe heat conduction element is a kind of element that makes full use of the heat conduction principle and the rapid heat transfer property of the phase change medium, and quickly transfers the heat of the heating object to the heat source through the heat pipe. The current loop heat pipe heat conduction element includes the evaporator shell And the outer tube, the outer tube is connected to the shell of the evaporator, so that the outer tube and the shell of the evaporator form a loop, the shell of the evaporator is provided with a copper powder sintered capillary structure, and one end of the copper powder sintered capillary structure is provided with a vent hole , the operating principle is that the heat source is attached to the shell of the evaporator, the heat source heats the shell of the evaporator, the shell is heated, the copper powder sintered capillary structure is heated, the liquid absorbed by the capillary structure absorbs heat, evaporates and vaporizes, and the gas is discharged from the vent hole of the capillary structure , the gas flows along the outer pipeline, is cooled into a liquid in the outer pipeline, and flows back to the evaporation section to form a cycle, but the loop heat pipe has the following problems: part of the liquid flowing into the evaporator shell is capillary by copper powder sintering The other part is in direct contact with the shell of the evaporator, and this part of the liquid is heated and vaporized at the same time, which increases the pressure in the shell of the evaporator, and the condensed liquid in the external pipeline is slow or unable to return, making the loop heat pipe The thermal efficiency is greatly reduced

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