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High-power flat evaporator resistant to positive pressure, processing method of flat evaporator and flat-plate loop heat pipe based on evaporator

A flat-plate loop, high-power technology, used in lighting and heating equipment, indirect heat exchangers, etc., to achieve the effect of improving heat transfer capacity, good permeability, and reducing flow resistance

Active Publication Date: 2018-03-09
BEIJING INST OF SPACECRAFT SYST ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In view of this, the present invention provides a positive pressure-resistant, high-power flat-plate loop heat pipe evaporator, which adopts a composite capillary core structure to improve heat transfer capacity, and solves the problem of compressive strength when the flat-plate loop heat pipe uses positive pressure working fluid. problems and technical issues for increasing heat transfer capability without increasing the thickness

Method used

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  • High-power flat evaporator resistant to positive pressure, processing method of flat evaporator and flat-plate loop heat pipe based on evaporator
  • High-power flat evaporator resistant to positive pressure, processing method of flat evaporator and flat-plate loop heat pipe based on evaporator
  • High-power flat evaporator resistant to positive pressure, processing method of flat evaporator and flat-plate loop heat pipe based on evaporator

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Embodiment 1

[0052] This embodiment provides a high-power flat-plate loop heat pipe evaporator with a positive-pressure-resistant structure, which uses a composite capillary structure to improve heat transfer capacity, solves the problem of compressive strength when the evaporator uses positive-pressure working fluid, and can be used in Improve heat transfer capability without increasing thickness.

[0053] The structure of the evaporator is as image 3 As shown, it includes: a housing 1 and a capillary core disposed inside the housing 1 .

[0054] The structure of the housing 1 takes into account both the strength required for positive pressure resistance and the uniform liquid supply function. The housing 1 is a rectangular structure with openings at both ends and reinforcing ribs 2 inside. Specifically, two reinforcing ribs 2 are arranged in parallel along the height direction inside the housing 1 , and the width of the reinforcing ribs 2 is consistent with the width of the housing 1 ....

Embodiment 2

[0060] This embodiment provides a processing method for a high-power flat-plate loop heat pipe evaporator with a positive-pressure-resistant structure. The transmission core 6 in the evaporator is made of metal sintered felt or wire mesh.

[0061] Raw materials include shell, wire mesh or sintered felt, powder required for heat insulation core, powder required for evaporation core, powder required for sealing core, limit tooling, steam channel tooling.

[0062] (1) Vertically place the steam channel tooling (wire) on the boss on the upper surface of the limiting tooling, and then install the shell (the rib and the shell as an integrated structure) on the boss on the upper surface of the limiting tooling (After the evaporator is processed, the space inside the shell occupied by the boss is the air accumulation chamber), so that the steam channel tooling is located inside the shell, and the steam channel tooling is attached to the end surface of one side of the shell, Such as ...

Embodiment 3

[0071] This embodiment provides a processing method for a high-power flat-plate loop heat pipe evaporator with a positive pressure-resistant structure. The transmission core 6 in the evaporator is formed by powder sintering or pressing.

[0072] Raw materials include the shell, the powder required for the transmission core, the powder required for the heat insulation core, the powder required for the evaporation core, the limit tooling, the placeholder tooling, and the steam channel tooling.

[0073] (1) Combine the limiting tooling with the steam channel tooling (that is, place the steam channel tooling vertically on the boss on the upper surface of the limiting tooling), and then install the shell on the boss on the upper surface of the limiting tooling, The steam channel tooling is located inside the shell, and the steam channel tooling is attached to the end face of one side of the shell, such as Figure 9 As shown in A;

[0074] (2) Fill the powder required for the evapo...

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Abstract

The invention provides a high-power flat evaporator resistant to positive pressure, a processing method of the flat evaporator and a flat-plate loop heat pipe based on the evaporator and belongs to the technical field of spacecraft structures. The evaporator comprises a casing, reinforcing ribs and a capillary core, wherein the reinforcing ribs and the capillary core are located in the casing, andthe strength of the whole evaporator can meet the requirement of positive pressure resistance by means of arrangement of the reinforcing ribs; the capillary core is formed by combining an evaporationcore, a thermal insulation core, a sealing core and a transmission core, liquid supply with low flow resistance can be realized on the basis of high permeability of the transmission core, heat-transfer capability of the loop heat pipe is improved substantially, and the problems of long liquid supply path and high flow resistance of a large-area evaporator are solved; with adoption of the transmission core and the thermal insulation core with low thermal conductivity, the phenomenon of heat leakage from the evaporator to a liquid accumulator can be reduced, meanwhile, good permeability is achieved, flow resistance in the capillary core is reduced, and operating stability of a product is improved.

Description

technical field [0001] The invention relates to a high-efficiency heat transfer element and a processing method thereof, in particular to a flat-plate loop heat pipe evaporator and a processing method thereof, belonging to the technical field of heat dissipation of spacecraft and other electronic equipment on the ground. 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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D15/04
CPCF28D15/043F28D15/046F28D15/04
Inventor 李国广张红星满广龙王帅刘东晓
Owner BEIJING INST OF SPACECRAFT SYST ENG
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