CN102003902A

CN102003902A - Heat pipe manufacturing method

Info

Publication number: CN102003902A
Application number: CN200910306294XA
Authority: CN
Inventors: 梁政仁; 洪锐文
Original assignee: Furui Precise Component Kunshan Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Furui Precise Component Kunshan Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2009-08-28
Filing date: 2009-08-28
Publication date: 2011-04-06
Also published as: US20110047796A1

Abstract

The invention relates to a heat pipe manufacturing method, comprising the following steps of: providing a pipe body, a filling rod and at least one pulse pipe, wherein the inner surface of the pipe body is provided with a capillary structure, the pipe body comprises an opening end, the outer surface of the filling rod is provided with at least one groove; inserting the filling rod and the pulse pipe into the pipe body, wherein the pulse pipe is contained in the groove; roasting the pipe body provided with the filling rod and the pulse pipe at high temperature so that the pulse pipe and the capillary structure are mutually combined; drawing the filling rod out; and vacuumizing, flooding and sealing the pipe body.

Description

The heat control making method

Technical field

The present invention relates to a kind of heat control making method.

Background technology

Present stage, heat pipe has been widely used in the heat radiation of the electronic component of the big caloric value of tool.During this heat pipe work, utilize the inner low boiling working fluid of filling of body carburation by evaporation behind the heat that its evaporator section absorption heat-generating electronic elements produces, be with heat to move to condensation segment, and condense in condensation segment liquefaction heat is discharged, working fluid after this liquefaction is back to evaporator section again under the effect of heat pipe wall portion capillary structure, by the shuttling movement of this working fluid, the heat that electronic component is produced is passed to the radiator that contacts with the condensation segment of heat pipe rapidly and distributes.When the capillary structure of heat pipe can not provide enough powerful capillary force, can not in time make the working fluid of condensation segment be back to evaporator section, may make working fluid very few and dryout, and then make heat pipe forfeiture heat transfer property and make heater element burn because of can not in time dispelling the heat.

The demand that raises gradually in response to electronic component maximum heat biography amount now, gradually develop and multiple combined capillary structure, as adding second capillary structure in the capillary structure on the inner surface of the body of heat pipe, this capillary structure can be plough groove type capillary structure, screen type capillary structure or sintered type capillary structure, this second capillary structure can be a vascular, capillary structure combines with second capillary structure, makes it to produce more capillary force, also can not cause too many flow resistance simultaneously.

Yet, the heat pipe of the capillary structure of this combined type of manufacturing is when placing this vascular in the prior art, usually just arbitrarily vascular is inserted in the body of heat pipe, this vascular generally can't be along the axial capillary structure of attached as the crow flies work in body of body, cause through hole and body in the vascular not parallel, increase the resistance that working fluid flows in through hole, the conveying capacity of having carried fluid to evaporator section from the condensation segment of heat pipe when having influenced this vascular work greatly.In addition, when in same heat pipe, many vasculars being set, vascular can overlap because of uncontrollable its position, cause the many vasculars all can't be along the axial capillary structure of attached definitely work in body of body, not only influence the fluid delivery capability of vascular, and can cause having some setbacks of the interior steam flow channel of heat pipe.Secondly; during use; contact with heat-generating electronic elements again after usually also needing heat pipe flattened; because the direction that vascular extends in body; be that binding site between vascular and the capillary structure is uncontrollable; when heat pipe is flattened, whole vascular can't be controlled at definitely body in the future with wall that heat-generating electronic elements contacts on, cause between the performance of heat pipe and produce deviation with this combined capillary structure.

Summary of the invention

In view of this, be necessary to provide a kind of easy making technology that has in fact, and can accurately control the heat pipe of the position of vascular.

A kind of heat control making method may further comprise the steps: a body, a filler rod and at least one vascular are provided, and the inner surface of this body is provided with capillary structure, and body comprises an openend, and the outer surface of this filler rod is provided with at least one groove; Filler rod and described vascular are inserted in the body, and described vascular is contained in the described groove; With the body that is provided with this filler rod and described vascular high-temperature baking together, make described vascular and capillary structure mutually combine; Extract filler rod out; Body is vacuumized, fluid injection, seals.

Compared with prior art, offer groove on the filler rod in this heat pipe manufacture process, make and have definite fixed position between the capillary structure of vascular in the combined capillary structure of heat pipe and inner surface of tube body, make the back deviation that causes because of vessel location is uncertain on the performance thereby can get rid of heat pipe, improve the stability of properties of hot pipe with this combined capillary structure.

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

Description of drawings

Fig. 1 is the flow chart of heat control making method in the embodiment of the invention.

Fig. 2 is the exploded view of heat control making method middle tube body, filler rod and vascular.

Fig. 3 inserts schematic diagram behind the body with filler rod.

Fig. 4 inserts schematic diagram behind the body with vascular.

Fig. 5 is the cut-away view of Fig. 4 along the V-V line.

Fig. 6 is the schematic diagram after extracting out in the body in body peripheral hardware tagging and with filler rod.

Fig. 7 is the schematic diagram after heat pipe is flattened.

Fig. 8 is the cut-away view of Fig. 7 along the VIII-VIII line.

Fig. 9 is the exploded view of the second embodiment middle tube body, filler rod and the vascular of heat control making method.

The specific embodiment

Figure 1 shows that the flow chart of heat control making method, introduce the manufacture method of heat pipe below in conjunction with Fig. 2 to Fig. 9 in detail.

At first, please consult Fig. 2 simultaneously, a body 10, a filler rod 20 and a vascular 30 are provided.This body 10 is made the hollow cylindrical metal shell by heat conductivility good metal material as copper etc.The cross section of this body 10 is rounded, and the two ends of body 10 are openend 11.Be equipped with capillary structure 12 on the inner surface of this body 10.This capillary structure 12 can adopt directly in the inner surface of body 10 and plough groove type capillary structure that some tiny axial grooves form is set, adopt the screen type capillary structure that metal copper mesh or fibre bundle braiding form or can select ceramic powders for use or metal dust such as copper powder etc. form the sintered type capillary structure via sintering process.This filler rod 20 is by high rigidity, high melting-point, SA metal material, the solid cylinder of making as steel etc.Filler rod 20 forms a groove 21 from a side direction sunken inside of outer surface.This groove 21 runs through the front and rear end of this filler rod 20 along extending axially of filler rod 20.The diameter of this filler rod 20 and body 10 be provided with behind the capillary structure 12 internal diameter about equally, and the length of filler rod 20 is greater than the length of body 10.The reelability that this vascular 30 forms for the fine copper silk thread braiding back of adopting line directly to be about 0.05mm the hollow circular pipe structure, the width of this groove 21 is slightly larger than the diameter of vascular 31, and the degree of depth is slightly less than the diameter of vascular 31.Be formed with some tiny holes on the tube wall 32 of vascular 30, the inner central passage 31 that forms, hole on the tube wall 32 and central passage 31 are interconnected.The length of this vascular 30 is substantially equal to the length of body 10.

See also Fig. 3, the openend 11 of filler rod 20 from body 10 inserted in the body 10.One end of filler rod 20 protrudes out outside the body 10 from the openend 11 of body 10.The outer surface that filler rod 20 is not provided with groove 21 closely contacts with capillary structure 12 in the body 10, if this capillary structure 12 is screen type capillary structure or sintered type capillary structure, this filler rod 20 can provide suitable pressure, force the capillary structure 12 and the inner surface of body 10 to fit tightly, thereby increase capillary structure 12 and the tightness degree that body 10 contacts, allow heat more successfully pass to capillary structure 12 from body 10.

See also Fig. 4, vascular 30 is inwardly inserted in the groove 21 of filler rod 20 from openend 11 levels of body 10.Because the degree of depth of groove 21 is slightly less than the diameter of vascular 30, after vascular 30 was inserted groove 21, vascular 30 was subjected to filler rod 20 and produces slight distortion with the extruding of capillary structure 12.Therefore, this filler rod 20 also can provide suitable pressure, increases the tightness degree that contacts between vascular 30 and the capillary structure 12, guarantees that working fluid can more successfully be passed to vascular 30 by capillary structure 12.As shown in Figure 5, the cross section ovalize of the vascular 30 after the distortion, the relative up and down both sides of vascular 30 contact first faying face 33 and second faying face 34 that forms arc respectively between the surface in groove 21 with capillary structure 12 and filler rod 20.Therefore, the vascular 30 of the relative undeformed circle of contact area between the oval-shaped vascular 30 after the distortion and the capillary structure 12 is bigger with the contact area of capillary structure 12.Because vascular 30 fits with capillary structure 12 vertically and forms the first bigger faying face 33, therefore more porous crack in the tube wall 32 of vascular 30 and the hole in the capillary structure 12 are interconnected, and can increase the capillary force of the integral body of this combined capillary structure.

Place a high temperature furnace to carry out high-temperature baking jointly the body 10 that is provided with described filler rod 20 and vascular 30, make and do combining of chemical bonded refractory between tube wall 32 and the capillary structure 12 of vascular 30, and vascular 30 and capillary structure 12 are interfixed.This filler rod 20 can guarantee in the process of high-temperature baking, can remain between vascular 30 and the capillary structure 12 along axially closely contact of body 10, thus the fixed position of the definite linearity of formation.

See also Fig. 6, extract filler rod 20 out, the position corresponding to vascular 20 places on the outer surface of the two end portions of body 10 is provided with mark 40.This mark 40 can be to utilize special-purpose icking tool, makes the cognizable small indentation of human eye what the outer surface of the two end portions of body 10 formed.This mark 40 also can only be formed at an end of body 10 outer surfaces.Owing to axially form the fixed position of linearity between the capillary structure 12 in vascular 30 and the body 10 along body 10,, promptly can judge the whole position of vascular 30 in body 10 definitely by the two ends of this body 10 or the mark 40 of an end.

Body 10 is vacuumized, fluid injection, processing such as seals to obtain finished product heat pipe 50, the position opposite heat tube 50 that last outer surface along body 10 is provided with mark 40 is flattened and is obtained required flat hot pipe 50, flat hot pipe 50 after this is flattened comprises plane upper and lower surperficial 51, and mark 40 roughly is positioned at the central authorities of upper surface 51.

During use, the upper surface 51 that this flat hot pipe 50 can be had mark 40 directly is sticked mutually with a heat-generating electronic elements.During work, as shown in Figure 8, this vascular 20 is positioned at the middle position of the upper surface 51 of flat hot pipe 50, just over against the position at heat-generating electronic elements place, vascular 20 is fitted mutually with capillary structure 12, hole in hole on the tube wall 32 and the capillary structure 12 is interconnected, and forms combined capillary structure jointly, and this vascular 20 combines the maximum fluid efficiency of transmission that can give full play to combined capillary structure with capillary structure 12.

In this heat control making method, can form rectilinear fixed position by adopting the mode of offering groove 21 on the filler rod 20 to make between the interior capillary structure 12 of vascular 30 and heat pipe 50, and by the mode of making mark 40 in the outer surface of heat pipe 50 make heat pipe 50 in use or flatten when using can be exactly with the binding site between vascular 30 and the capillary structure 12 and heat-generating electronic elements over against being sticked, thereby can effectively utilize the fluid efficiency of transmission of vascular 30 and capillary structure 12 formed combined capillary structures.Different heat-generating electronic elements has different sizes, hotspot location etc., and vascular 30 can at utmost be brought into play when using the fluid efficiency of transmission of combined capillary structure over against the hotspot location of heat-generating electronic elements.Therefore, this filler rod 20 can be done particular design in response to different heat-generating electronic elements, by on the outer surface of filler rod 20, offering the groove 21 of varying number, shape and size, can simultaneously many vasculars 30 be fixed in the ad-hoc locations in the heat pipe 50 and form the combined capillary structure that is suitable for special radiating requirements.Be illustrated in figure 9 as second embodiment of heat control making method of the present invention, this filler rod 20a comprises two groove 21a that lay respectively at first end and is positioned at a groove 21a of second opposed end, each groove 21a extends to the center of filler rod 20a from the end face of filler rod 20a, and the length of each groove 21a is less than the length of filler rod 20a.In this heat pipe manufacture process, this filler rod 20a goes up each groove 21a can be corresponding with a vascular 30a, adopts the prepared combined capillary structure of this filler rod 20a to comprise two vascular 30a that are positioned at capillary structure 12 1 ends and be positioned at a vascular 30a of the other end.So the combined capillary structure that forms can also fixedly have the various vasculars of somewhat complex design in heat pipe 50 except the capillary force and fluid delivery capability that can supply heat pipe 50.

Claims

1. heat control making method may further comprise the steps:

One body, a filler rod and at least one vascular are provided, and the inner surface of this body is provided with capillary structure, and body comprises an openend, and the outer surface of this filler rod is provided with at least one groove;

Filler rod and described vascular are inserted in the body, and described vascular is contained in the described groove; With the body that is provided with this filler rod and described vascular high-temperature baking together, make described vascular and capillary structure mutually combine;

Extract filler rod out;

Body is vacuumized, fluid injection, seals.

2. heat control making method as claimed in claim 1, it is characterized in that: the hollow circular pipe structure of described vascular for adopting the silk thread braiding to form, the width of described groove is greater than the diameter of described vascular, and the degree of depth is less than the diameter of described vascular, described vascular is subjected to the extruding of filler rod and capillary structure and produces distortion, the cross section ovalize of the vascular after the distortion.

3. heat control making method as claimed in claim 1 is characterized in that: described groove is along the front/rear end that extends axially and run through filler rod of filler rod.

4. heat control making method as claimed in claim 1 is characterized in that: the quantity of described groove is a plurality of and lays respectively at the two ends of filler rod that each groove extends to the center of filler rod from an end face of filler rod.

5. heat control making method as claimed in claim 1 is characterized in that: this filler rod is made by high rigidity, high melting-point, SA metal material.

6. heat control making method as claimed in claim 1 is characterized in that: the outer surface that also is included in body is provided with mark in the position of the described vascular of correspondence.

7. heat control making method as claimed in claim 6 is characterized in that: this mark is formed at the outer surface at the two ends of body respectively.

8. heat control making method as claimed in claim 6 is characterized in that: this is labeled as and makes the cognizable indentation of human eye.

9. heat control making method as claimed in claim 6, it is characterized in that: comprising also that the position opposite heat tube that is provided with mark along the outer surface of body is flattened obtains flat hot pipe, this flat hot pipe comprises plane surface, and mark is positioned at the central authorities on plane surface.

10. heat control making method as claimed in claim 1 is characterized in that: the diameter of this filler rod equates that with internal diameter after body is provided with capillary structure the length of this filler rod is greater than the length of body.