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Double-sided-heating evaporator and flat plate loop heat pipe based on evaporator

A double-sided heating and evaporator technology, which is applied in indirect heat exchangers, lighting and heating equipment, cooling/ventilation/heating transformation, etc. Road heat pipe can not operate normally and other problems

Inactive Publication Date: 2019-07-09
BEIJING INST OF SPACECRAFT SYST ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In view of this, the present invention provides an evaporator that can be heated on both sides, which can solve the problems caused by the increase of the superheat of the evaporator caused by the heating of the non-channel side of the traditional flat-plate loop heat pipe evaporator, and the nucleate boiling of the transmission core. The problem of the road heat pipe not working properly

Method used

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  • Double-sided-heating evaporator and flat plate loop heat pipe based on evaporator
  • Double-sided-heating evaporator and flat plate loop heat pipe based on evaporator
  • Double-sided-heating evaporator and flat plate loop heat pipe based on evaporator

Examples

Experimental program
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Effect test

Embodiment 1

[0041] This embodiment provides a double-sided heating plate loop heat pipe evaporator, see attached image 3 , including: an evaporator shell 1 and a capillary core arranged inside the evaporator shell 1;

[0042] The capillary core includes: an evaporating core 21 and a transmission core 22 sandwiched in the middle of the evaporating core 21; the upper and lower end surfaces of the evaporating core 21 are respectively provided with a plurality of steam channels 6; The upper and lower inner walls are bonded together, and one end of the transmission core 22 protrudes from the evaporation core 21 to communicate with the liquid reservoir 3 .

[0043] Since the upper and lower end surfaces of the evaporator core 21 are provided with steam channels 6, the upper and lower outer walls of the evaporator can be attached to the heating equipment to absorb the heat of the equipment. Channel 6 flows to steam line 4 .

[0044] In the above scheme, further, the capillary wick also includ...

Embodiment 2

[0046]This embodiment provides a double-sided heating flat plate loop heat pipe, including: an evaporator, a liquid reservoir 3, a vapor pipeline 4 and a liquid pipeline 5; the evaporator in the flat plate loop heat pipe adopts the above-mentioned embodiment 1 The evaporator in the evaporator, that is, the capillary core of the evaporator includes: an evaporation core 21 and a transmission core 22 sandwiched in the middle of the evaporation core 21; the upper and lower end surfaces of the evaporation core 21 are respectively provided with a plurality of steam channels 6. The liquid reservoir 3 is arranged on one side of the evaporator.

[0047] The capillary core is arranged inside the evaporator shell 1; wherein, the two vapor channels 6 are attached to the upper and lower inner walls of the evaporator shell 1 respectively, and one end of the transmission core 22 protrudes from the evaporator core 21 and then extends into the liquid storage Inside device 3;

[0048] The stea...

Embodiment 3

[0052] On the basis of the above-mentioned embodiment 2, specific limitations are made on the evaporator shell 1, the evaporator core 21, the transmission core 22, the heat insulation core 23, and the liquid reservoir 3;

[0053] See attached Figure 4 , the evaporator shell 1 is made of metal materials, such as stainless steel, copper, titanium alloy, etc., and the structure of the evaporator shell 1 is a cuboid or an approximate cuboid cavity; further, the inside of the evaporator shell 1 is provided with reinforcing ribs A7 to improve The pressure bearing capacity of the evaporator shell 1 for the working fluid under positive pressure.

[0054] The evaporating core 21 is made of sintered or pressed powder with high thermal conductivity and small particle size, such as copper and nickel.

[0055] The transmission core 22 is made of sintered metal felt or wire mesh with a high permeability and a special-shaped structure, or sintered or pressed powder with a large particle si...

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Abstract

The invention relates to the technical field of radiating of spacecrafts and other electronic equipment on the ground, in particular to an efficient heat transfer element, and discloses a double-sided-heating evaporator and a flat plate loop heat pipe based on the evaporator. The evaporator comprises an evaporator shell, and a porous wick, the porous wick comprises an evaporation core and a transmission core clamped in the middle position of the evaporation core, steam groove channels are arranged on the upper and lower end faces of the evaporation core, the porous wick is arranged in the evaporator shell, the steam groove channels are attached to the upper and lower inner wall surfaces of the evaporator shell, and one end of the transmission core is protruded from the evaporation core andis located in a liquid storing device. The invention solves the problem that a conventional flat plate loop heat pipe can only conduct single-side heating, the porous wick adopts a sandwich structureof the upper and lower sides of the evaporation core and the middle of the transmission core, and the functions of providing the large capillary force evaporation interface on both sides and achieving the low-flow-resistance liquid transmission at the interior are achieved.

Description

technical field [0001] The invention relates to the technical field of heat dissipation for spacecraft and other electronic equipment on the ground, in particular to a high-efficiency heat transfer element. Background technique [0002] The loop heat pipe is a high-efficiency two-phase heat transfer device, which has the characteristics of high heat transfer performance, long-distance heat transfer, excellent temperature control characteristics, arbitrary bending of the pipeline, and convenient installation. With comparable advantages, the loop heat pipe has very broad application prospects in many fields such as aviation, aerospace, and ground electronic equipment heat dissipation. [0003] Such as figure 1 As shown, the loop heat pipe mainly includes an evaporator, a condenser, a liquid receiver, a vapor line and a liquid line. The whole cycle process is as follows: the liquid evaporates on the outer surface of the capillary core in the evaporator, absorbs the heat outsi...

Claims

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Application Information

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IPC IPC(8): F28D15/04H05K7/20
CPCF28D15/043F28D15/046H05K7/20336
Inventor 张红星李国广陈阳满广龙彭方汉付伟纯
Owner BEIJING INST OF SPACECRAFT SYST ENG