CN100437000C

CN100437000C - Heat pipe and device for sealing heat pipe

Info

Publication number: CN100437000C
Application number: CNB2005100345050A
Authority: CN
Inventors: 林振辉; 韩飞; 李震
Original assignee: Fuzhun Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Fuzhun Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2005-04-29
Filing date: 2005-04-29
Publication date: 2008-11-26
Anticipated expiration: 2025-04-29
Also published as: CN1858538A; US20060243424A1

Abstract

The present invention provides a heat pipe and a device for sealing heat pipes. The heat pipe comprises a pipe body, wherein one end of the pipe body is a closed end, and the other end of the pipe body is a sealing end. The tail end of the sealing end is a flattened area, and the cross section of the flattened area is in a wavy shape. The device for sealing heat pipes comprises a pair of male and female forming blocks and a pair of clamping blocks, wherein the forming blocks are provided with a pair of wavy forming end surfaces which can be mutually engaged, and the clamping blocks and the forming blocks are vertically arranged to prevent the flattened area of the heat pipe from extending along a vertical flattening direction during flattening process, and thus, the flattened area has the advantages of favorable strength and less radial dimension.

Description

The heat pipe sealing device

[technical field]

The present invention relates to a kind of heat pipe sealing device.

[background technology]

Fast development along with the electronic industry technology, the speed of service of electronic building brick constantly promotes, the heat of its generation also increases thereupon, if untimely heat with its generation is discharged, to cause its temperature constantly to raise, and then have a strong impact on its runnability, for guaranteeing that electronic building brick can normally move, usually one radiator is installed so that heat is distributed apace on its surface, be to strengthen the heat dispersion of radiator, have the heat pipe that heat conduction efficiency Gao Bingneng inhales heat release repeatedly and be widely used in the radiator.

For guaranteeing the performance of heat pipe, its processing procedure is extremely important.Usually, a kind of heat pipe processing procedure roughly comprises: lay capillary structure in the body of Yu Yiduan sealing, vacuumize, and the filling operation medium, to steps such as the other end of body seal, the quality of seal quality directly has influence on the performance of heat pipe.

The heat pipe sealing technology of industry existence at present has: with modes such as block tin/EPOXY filling, mechanical type pressings.Yet, all there is certain defective in these modes, as adopt block tin/EPOXY filling, the processing procedure complexity, corresponding manufacturing cost height, and easily produce distortion with the thermotube wall binding site and cause seal failure at the curved block tin/EPOXY that is pressed in the shape process, thereby so can't bend secondary operations such as pressure its application is restricted.And traditional mechanical type pressing is to adopt anchor clamps from the tube body of heat pipe dual-side while application of force, cause the heat pipe end along the flat realization sealing of axial line, again thereby the flat zone end is welded in its terminal spherical weld part that forms, shown in the 6th figure and the 7th figure afterwards.Yet, a because anchor clamps clamping heat pipe both sides when flattening, thereby make tube body of heat pipe when flattening, can extend towards the other both sides of vertical above-mentioned flattening direction, cause the relatively thin and size long (please join the 6th figure) that directly make progress at heat pipe in pressing position, mechanical strength a little less than, when heat pipe in the soldering of vertical direction high temperature in the production process of radiator, terminal spherical weld part can cause terminal distortion (please join the 7th figure) because of gravity factor, and the long meeting of size that the pressing position directly makes progress at heat pipe has influence on the use of heat pipe.

[summary of the invention]

Above-mentioned heat pipe enclosuring structure intensity is weak in order to solve, the long problem of radial dimension, is necessary to provide a kind of heat pipe sealing device that is used to make the heat pipe of the enclosuring structure with higher-strength and less radial dimension.

This is used for the device of heat pipe sealing, comprise a pair of forming blocks and a pair of grip block, this grip block directly upwards is subjected to displacement at heat pipe when flattening in order to prevent heat pipe, this sealing end that grip block is used for the clamping heat pipe is subjected to displacement along the vertical direction of flattening when flattening with the sealing end for the treatment of that prevents heat pipe, and this is provided with a pair of wavy moulding end face that is meshing with each other to forming blocks.

Compared to prior art, when utilizing the device that is used for heat pipe sealing of present embodiment to seal, two grip blocks can prevent that the sealing end of heat pipe from extending along the vertical direction of flattening.Like this, the flattening district of sealing end has intensity and less radial dimension preferably, is difficult for producing distortion when the high temperature soldering; And, flattening the district, heat pipe two tube wall contact-making surfaces are with arc transition, and stress is little, thus difficult generation is broken and is made heat pipe have reliable sealing.

[description of drawings]

Fig. 1 is the schematic diagram of first embodiment of the invention heat pipe;

The process schematic diagram that Fig. 2 seals to the device opposite heat tube that is used for this heat pipe sealing that Figure 5 shows that according to first embodiment of the invention; And

Figure 6 and Figure 7 is a kind of existing heat pipe enclosuring structure.

[specific embodiment]

With reference to the accompanying drawings, the invention will be further described in conjunction with the embodiments.

Figure 1 shows that the schematic diagram of first embodiment of the invention heat pipe 10.

This heat pipe 10 comprises a body 12, and one of this body end is sealed end 14, and its other end is a sealing end 16.This sealing end 16 comprise one flatten district 16a and in the district 16b that contracts, this flattenings district 16a is positioned at the end away from sealed end 14 of sealing end 16, in the district 16b that contracts distinguish between 16a and the body 12 in flattening.The cross section that flattens district 16a is wavy, in the present embodiment, this is wavy to be S shape, and the center line of this flattening district 16a and the center line of body 12 are located along the same line, flatten district 16a along distributions that be centrosymmetric of the center line of body 12, thereby making to flatten distinguishes 16a and has better intensity.

The process schematic diagram that Fig. 2 seals to the device opposite heat tube 10 that is used for heat pipe sealing that Figure 5 shows that according to first embodiment of the invention.This device comprises a pair of male and female forming

blocks

22,24 and a pair of grip block 26, this is provided with a pair of wavy moulding end face 22a, the 22b that is meshing with each other to forming

blocks

22,24, in the present embodiment, this is wavy to be S shape, this forms the S tee section that type end side 22a, 22b are used for the sealing end 16 of moulding heat pipe 10 to S, this is arranged vertical to grip block 26 and forming

blocks

22,24, and the sealing end that is used for the clamping heat pipe is subjected to displacement along the vertical direction of flattening when flattening with the sealing end that prevents heat pipe 10.

The process of sealing of following opposite heat tube 10 is described in detail.

At first, with heat pipe 10 treat sealing end wait that flattening district 16a ' is positioned in the cavity that male and female forming

blocks

22,24 and two grip blocks 26 are formed, as shown in Figure 2;

Then, mobile male and female forming

blocks

22,24 make it to push heat pipe 10 wait flatten district 16a ' two walls fit tightly together up to waiting to flatten on the district 16a ' down, also promptly form the flattening district 16a of the sealing end 16 of heat pipe 10, as shown in Figure 3;

Afterwards, the redundance that utilizes 32 pairs of cutting knifes to flatten district 16a excises; As shown in Figure 4;

Again, separate male and female forming

blocks

22,24, as shown in Figure 5;

At last, take out heat pipe 10, and opposite heat tube 10 end that flattens district 16a welds the sealing with further assurance heat pipe 10, so far, the processing procedure that seals of heat pipe 10 is finished.

In the present embodiment, because two grip blocks 26 and forming

blocks

22,24 are arranged vertical, two grip blocks 26 and forming

blocks

22,24 radially surround heat pipe 10 along heat pipe 10, thereby, utilizing forming blocks 22, when the sealing end 16 of 24 opposite heat tubes 10 flattens, two grip blocks 26 can prevent that the sealing end 16 of heat pipe 10 from extending along the vertical direction of flattening, as working as forming

blocks

22,24 when the sealing end 16 of opposite heat tube 10 flattens along the vertical direction, two grip blocks 26 can prevent that the sealing end 16 of heat pipe 10 from extending upward at right and left, when forming blocks 22, when 24 sealing ends 16 along left and right directions opposite heat tube 10 flattened, two grip blocks 26 can prevent that the sealing end 16 of heat pipe 10 from extending upward at upper and lower.Like this, flatten district 16a and have intensity and less radial dimension preferably, when the high temperature soldering, be difficult for producing distortion; And, flattening 10 liang of tube wall contact-making surfaces of district's 16a heat pipe with arc transition, stress is little, thereby difficult generation is broken and is made heat pipe 10 have reliable sealing in moulding and use, and, sealing end 16 is wavy, makes that sealing end 16 is difficult for producing fold thereby having better surface smoothness in forming process.

According to above-mentioned explanation clear elaboration key character of the present invention, method of operating and practical application thereof, and therefrom fully understood its advantage, but also lift all possibilities unintentionally to the greatest extent at this, or limit the invention in disclosed details and the framework, shape as the sealing end 16 of above-mentioned heat pipe 10 is not limited to wavy, can also be V-type, W type, because according to the above description, being familiar with this skill person might carry out the modification of various kinds and structural change and unlikelyly depart from spirit of the present invention and be covered by in the equity declaration of claim.

Claims

1. device that is used for heat pipe sealing, comprise a pair of forming blocks, its improvement is: this device also comprises a pair of grip block, this is arranged vertical to grip block and forming blocks, this sealing end that grip block is used for the clamping heat pipe is subjected to displacement along the vertical direction of flattening when flattening with the sealing end for the treatment of that prevents heat pipe, and this is provided with a pair of wavy moulding end face that is meshing with each other to forming blocks.

2. the device that is used for heat pipe sealing as claimed in claim 1 is characterized in that: wherein this directly upwards surrounds this heat pipe to grip block and forming blocks at heat pipe.

3. the device that is used for heat pipe sealing as claimed in claim 1 or 2 is characterized in that: wherein this is wavy for S shape.