CN100582636C

CN100582636C - Preparation method of hot pipes

Info

Publication number: CN100582636C
Application number: CN200510100036A
Authority: CN
Inventors: 董才士
Original assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2005-09-28
Filing date: 2005-09-28
Publication date: 2010-01-20
Anticipated expiration: 2025-09-28
Also published as: CN1940451A

Abstract

The inventive working-fluid processing method includes the following steps of charging an amount of liquid working fluid into a container and feeding a specific gas into the working fluid to remove oxygen from the working fluid. The invention also provides a heat-pipe manufacturing method. In the process of manufacturing heat-pipe, the working fluid processed by the above method is filled in the copper heat pipe as the working fluid for heat pipes. The working fluid has a very low oxygen content, so it can prevent the heat pipe inner wall from producing the oxidizing reaction.

Description

The method for preparing heat pipe

[technical field]

The present invention relates to a kind of method for preparing this heat pipe.

[background technology]

Electronic technology develops rapidly in recent years, and the high frequency of electronic device, high speed and integrated circuit intensive and microminiaturized makes unit volume electronic building brick caloric value increase severely.The radiating mode of prior art comprises modes such as radiating fin, heat pipe and thermally-conductive interface.How to improve radiating efficiency and solve the heat energy that electronic building brick sends, preventing becomes current important topic because of the integrated circuit closeness increases the damage that the high hot high temperature that produces causes electronic building brick.

Heat pipe is the heat-transfer device that dependence self internal work fluid phase transformation realizes heat conduction, and it has characteristics such as high-termal conductivity, good isothermal, and good heat conduction effect is widely used.And characteristics such as hot pipe technique is efficient with it, compactness and flexibility and reliability, be fit to solve the heat dissipation problem that present electronic building brick is derived because of performance boost.

Typical heat pipe is made up of shell, imbibition core and the working fluid that is sealed in the described shell.The making of heat pipe is normally filled with an amount of working fluid after being evacuated in the shell earlier, is sealed again.One end of heat pipe is a fire end, and the other end is a colling end, can between fire end and colling end the adiabatic section be set according to application need.The working fluid carburation by evaporation forms steam in the imbibition core when the heat pipe fire end is heated, and steam condenses into working fluid and emits heat at the dirty colling end to heat pipe of slight pressure difference effect, and working fluid flows back to fire end by the capillarity of imbibition core again.So the result of circulation is: heat constantly reaches colling end by the fire end of heat pipe, and is positioned at the low-temperature receiver absorption of the colling end other end.

The material of heat pipe is generally high heat conductive metal or its alloy, and the most frequently used is copper material.Based on the thermodynamic analysis of redox reaction, if the working fluid that is filled in the copper material heat pipe contains oxygen, oxidation reaction can take place in the tube wall of working fluid and copper material heat pipe under the situation that has oxygen to exist, promptly can produce 2Cu+4H automatically ⁺+ O ₂→ 2H ₂O+2Cu ²⁺Reaction, the inwall of copper material heat pipe has oxidative phenomena, and heat pipe is because of being subjected to the conduction that this oxide etch hinders heat, the service life of reducing heat pipe simultaneously.

[summary of the invention]

In view of this, be necessary to provide a kind of method for preparing heat pipe.

A kind of method for preparing heat pipe, may further comprise the steps: a liquid working fluid is packed in the container, the mist of any one gas or nitrogen and inert gas is got rid of the oxygen in this working fluid to this working fluid in feeding nitrogen or the inert gas; The hollow tube that one internal face is formed with the imbibition core vacuumizes; The working fluid of having got rid of oxygen is in right amount injected this vacuum hollow tube; With this vacuum hollow tube sealing.

Compared with prior art, the described method for preparing heat pipe, in preparation process, can remove the oxygen in the working fluid, oxygen content is reduced, working fluid is packed in the heat pipe of copper material working fluid as heat pipe, because oxygen content is extremely low in the working fluid, can prevent the inwall generation oxidation reaction of copper material heat pipe, prevent that heat pipe is because of being subjected to the conduction that oxide etch hinders heat, the service life that can improve heat pipe simultaneously.

[description of drawings]

Fig. 1 is the deal with the work flow chart of method of fluid of the present invention.

Fig. 2 is the deal with the work profile of the employed device of method of fluid of the present invention.

Fig. 3 is the flow chart that the present invention prepares the method for heat pipe.

[specific embodiment]

Below in conjunction with accompanying drawing the present invention is described in further detail.

See also Fig. 1 and Fig. 2, Fig. 1 is the deal with the work flow chart of method of fluid of the present invention, and Fig. 2 is the profile of the employed device of method of this work of treatment fluid.The method of this work of treatment fluid comprises the following steps.

Step 101 provides the device 1 of a work of treatment fluid, opens valve 14, injects an amount of liquid working fluid 11 to container 10 by ingress pipe 13.

Step 102 feeds specific gas to working fluid 11 by ingress pipe 13, opens delivery line valve 16 simultaneously.Because the solubility of gas in working fluid 11 is fixing under same temperature, utilize and feed specific gas, promptly increase the molten amount of specific gas in working fluid 11, thereby reduce the oxygen content in the working fluid 11, duration of ventilation can adjust according to the amount of working fluid 11, be generally tens of minutes to a few hours, the oxygen that is discharged from working fluid 11 is discharged by the delivery line 15 of tool valve 16.This specific gas is any one gas or this several any mist in nitrogen or the inert gas.

Step 103 continues to feed specific gas, because the solubility of specific gas in working fluid 11 reaches capacity, will be filled in working fluid 11 tops, forms specific gas protective layer 12.

Step 104 stops to feed specific gas, and valve 14 and valve 16 are closed, and in the process of work of treatment fluid 11, working fluid conveying end 17 is in closed state all the time, makes working fluid 11 by specific gas protective layer 12 and this device 1 and atmospheric isolation.

See also Fig. 3, it is the flow chart that the present invention prepares the method for heat pipe, and this method for preparing heat pipe comprises the following steps.

Step 301 provides the hollow tube of a copper material.

Step 302 forms the imbibition core at the hollow tube internal face.

Step 303 with this hollow tube one end sealing, and is evacuated.

Step 304 is used the method for the work of treatment fluid identical with a last embodiment, and an amount of liquid working fluid is packed in the container, feeds specific gas to working fluid, and the oxygen in the working fluid is got rid of.

Step 305 will be by the working fluid after the processing of as shown in Figure 2 work of treatment fluid means 1 by conveying end 17 usefulness power extraction equipment or syringe needle taking-up, and injects this vacuum hollow tube.

Step 306 with the sealing of the hollow tube other end, makes working fluid be sealed in the pipe.

Compared with prior art, the method for described work for the treatment of fluid can be removed in the working fluid Oxygen makes oxygen-content reduction in the working fluid, and forms the gas shield layer above working fluid, can Prevent that working fluid from contacting with atmosphere, can preserve well working fluid. In addition, described preparation heat The method of pipe in the heat pipe preparation process, will be packed into copper material through the working fluid that said method is processed As the working fluid of heat pipe, because oxygen content is extremely low in the working fluid, can prevent copper material in the heat pipe of matter The inwall generation oxidation reaction of matter heat pipe prevents that heat pipe, simultaneously can because being corroded the conduction that hinders heat Improve the service life of heat pipe.

In addition, those skilled in the art can also do other variations in spirit of the present invention, certainly, and these Variation according to spirit of the present invention is done all should be included in the present invention's scope required for protection.

Claims

1. method for preparing heat pipe may further comprise the steps:

One liquid working fluid is packed in the container, and the mist that feeds any one gas in nitrogen or the inert gas or nitrogen and inert gas is got rid of the oxygen in this working fluid to this working fluid;

The hollow tube that one internal face is formed with the imbibition core vacuumizes;

This working fluid of having got rid of oxygen is in right amount injected this vacuum hollow tube;

With this vacuum hollow tube sealing.