CN1811328A - Heat pipe and its making process - Google Patents
Heat pipe and its making process Download PDFInfo
- Publication number
- CN1811328A CN1811328A CNA2005100331043A CN200510033104A CN1811328A CN 1811328 A CN1811328 A CN 1811328A CN A2005100331043 A CNA2005100331043 A CN A2005100331043A CN 200510033104 A CN200510033104 A CN 200510033104A CN 1811328 A CN1811328 A CN 1811328A
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- Prior art keywords
- silk screen
- heat pipe
- folding shape
- plane
- layer
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/04—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure
- F28D15/046—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with tubes having a capillary structure characterised by the material or the construction of the capillary structure
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Laminated Bodies (AREA)
Abstract
The heat pipe includes a pipe and a capillary structure contacting closely to the inner wall of the pipe. The capillary structure includes several layers of radially superposed silk screen with at least one layer capable of being developed into flat sheet and at least one layer capable of being developed into creped sheet to form the axial flow channel of the heat pipe. The making process of the capillary structure layer includes the following steps: providing flat silk screen and creped silk screen; winding the silk screens into tubes; and fixing the tubes inside the pipe of heat pipe. The heat pipe with compounded flat silk screen and creped silk screen structure has great capillary tension, low reflow resistance and raised heat pipe performance.
Description
[technical field]
The invention relates to a kind of heat pipe and manufacture method thereof.
[background technology]
Along with large scale integrated circuit continuous advancement in technology and extensive use, the development of information industry is advanced by leaps and bounds, and the high-frequency high-speed processor is constantly released.Because the high-frequency high-speed operation makes the processor unit interval produce a large amount of heats, to cause the rising of processor self temperature as these heats of untimely eliminating, safety and performance to system make a big impact, the essential problem that solves when at present heat dissipation problem has become high speed processor of new generation and releases.
At present, because heat pipe has heat transfer rate faster, and be widely used in the electronic element radiating field.Heat pipe commonly used comprises that one has the sealing tubular shell of certain vacuum degree, and is provided with the capillary structure layer that sintering forms and is filled with an amount of hydraulic fluid in housing in housing, and this heat pipe one end is an evaporation ends and the other end is a condensation end.When the heat pipe evaporation ends absorbs heat, the hydraulic fluid carburation by evaporation, steam condenses into liquid after condensation end is emitted heat flowing under the small pressure reduction, and liquid is back to the heat pipe evaporation ends by the capillary pressure difference that capillary structure layer produces, thereby makes heat reach condensation end rapidly by the heat pipe evaporation ends.So, the service behaviour of heat pipe is subjected to the influence of capillary pressure difference and backflow resistance two factors, this two factor changes along with the size of the capillary porosity of capillary structure, when the capillary porosity hour, it is poor that it has big capillary pressure, can drive coagulating liq enters in the capillary structure and refluxes to evaporation ends, but then, the frictional force and the viscous force that reduce hydraulic fluid is refluxed of capillary porosity increase, be that hydraulic fluid backflow resistance increases, cause the hydraulic fluid back-flow velocity slow, easily make heat pipe evaporation ends generation dry combustion method phenomenon, and when the capillary porosity is big, hydraulic fluid is subjected to less backflow resistance, yet the capillary pressure difference that makes condensed fluid suck capillary structure reduces thereupon, reduces the hydraulic fluid capacity of returns, also can make heat pipe evaporation ends generation dry combustion method phenomenon.
[summary of the invention]
Technical problem to be solved by this invention provides the screen type heat pipe that a kind of capillary pressure difference is big, the backflow resistance is little.
Another technical problem to be solved by this invention provides a kind of manufacture method of this heat pipe.
For solving the technology of the present invention problem, heat pipe of the present invention comprises a body and the capillary structure layer that closely contacts with the inboard wall of tube body face, this capillary structure layer comprises along the radially folded several layers silk screen of establishing of heat pipe, this several layers silk screen comprises that being plane silk screen and along one of heat pipe circumference expansion at least is the silk screen of rolling over shape, and this folding shape silk screen forms in heat pipe along the axial runner of heat pipe.
For solving another technical problem of the present invention, heat control making method of the present invention may further comprise the steps: a sheet of at least plane silk screen and a sheet of folding shape silk screen at first are provided; Secondly silk screen successively is rolled into cylindrical body; At last above-mentioned cylindrical body is inserted in the body.
The present invention reaches the purpose that reduces the backflow resistance when promoting capillary force by plane silk screen of combined type and folding shape screen net structure, promotes properties of hot pipe.
[description of drawings]
Fig. 1 is that heat pipe is along cross sectional representation.
Fig. 2 is that plane silk screen launches schematic diagram along the heat pipe circumferencial direction.
Fig. 3 is that folding shape silk screen launches schematic diagram along the heat pipe circumferencial direction.
Fig. 4 is the folding shape silk screen schematic diagram of indentation.
Fig. 5 is the schematic diagram that folding shape silk screen shown in Figure 4 is applied to heat pipe.
Fig. 6 is the folding shape silk screen schematic diagram that horizontal segment and tilting section alternately extend.
Fig. 7 is the schematic diagram that folding shape silk screen shown in Figure 6 is applied to heat pipe.
Fig. 8 is the heat pipe cross sectional representation that comprises two-layer plane silk screen.
Fig. 9 is the heat pipe cross sectional representation that comprises two-layer folding shape silk screen.
Figure 10 is the different heat pipe cross sectional representation of each layer silk screen pore size.
Figure 11 is a heat control making method flow chart of the present invention.
Figure 12 is that heat tube capillary structure layer volume is located at the pull bar schematic diagram.
Figure 13 inserts schematic diagram in the tube body of heat pipe with capillary structure layer.
[specific embodiment]
With reference to the accompanying drawings, the invention will be further described in conjunction with the embodiments.
As shown in Figure 1, heat pipe 10 of the present invention comprises a body 20, the capillary structure layer 30 that closely contacts with these body 20 internal faces and be filled in hydraulic fluid in the body 20.
As shown in Figure 2, plane silk screen 50 launches to be a planar structure along the circumferencial direction of heat pipe.
Be illustrated in figure 3 as the expanded view of this folding shape silk screen 40 along heat pipe 10 circumferencial directions, this folding shape silk screen 40 is 90 ° of bending extensions continuously, form horizontal segment 42 and vertical section 46 alternately, wherein horizontal segment 42 comprises that the last horizontal segment 43 that lays respectively at vertical section 46 two ends reaches horizontal segment 44 down, with reference to Fig. 1, should go up horizontal segment 43 closely contacts with plane silk screen 50, following horizontal segment 44 closely contacts with body 20 internal faces, thereby should form runner 48 between the two adjacent vertical sections 46 of folding shape silk screen 40, this runner 48 extends axially along heat pipe 10, be out of shape owing to folding shape silk screen 40 is rolled into ring-type, make the cross section of this runner 48 in heat pipe roughly be trapezoidal.
During heat pipe 10 work, the hydraulic fluid heat absorption rapid evaporation of heat pipe 10 evaporation ends is condensed into liquid to the condensation end of heat pipe 10 and in this condensation end to extraneous release heat, mainly provide the liquid of the capillary force driving condensation of liquid backflow to reflux to evaporation ends by the loose structure of plane silk screen 50 this moment, and folding shape silk screen 40 formed runner 48 cross sections are bigger, effectively promote the back-flow velocity of liquid, thereby reach high capillary force and high back-flow velocity simultaneously, promote the heat transfer property of heat pipe 10.
In the foregoing description, be trapezoidal runner 48 thereby folding shape silk screen 40 is 90 ° of continuous bending formation cross sections, be appreciated that ground, this folding shape silk screen 40 is not limited to above-mentioned bending mode, as long as it forms flow passage structure in heat pipe 10.
As Fig. 4 and Figure 5 shows that another embodiment of folding shape silk screen, 440 bendings continuously of folding shape silk screen, its cross section is indentation roughly, and folding shape silk screen 440 forms cross section runner 448 roughly triangular in shape in heat pipe 410.
As the again embodiment of Figure 6 and Figure 7 for folding shape silk screen, folding shape silk screen 640 comprises a horizontal segment 642 and two tilting sections 646 that are arranged alternately, the cross section indentation of this two tilting section 646, the junction of the two closely contacts with the internal face of body 20, horizontal segment 642 closely contacts with plane silk screen 50, thereby form cross section first flow 648 triangular in shape between this two tilting section 646, form between this horizontal segment 642 tilting section 646 adjacent with its both sides and roughly be the second trapezoidal runner 648 ', this first flow 648 and second runner 648 ' are spaced apart along the circumferencial direction of heat pipe 610.Be appreciated that ground, also can the horizontal segment 642 of folding shape silk screen 640 be contacted these folding shape silk screen 640 reverse settings with body 20, and bending segment 646 contact with horizontal silk screen 50.
In the above embodiment, be that folding shape silk screen is folded between body 20 and the plane silk screen 50, be appreciated that ground, also folding shape silk screen can be placed innermost layer, and plane silk screen 50 is folded between body 20 and the folding shape silk screen.
In addition, above-described capillary structure layer 30 only comprises the folded mutually plane silk screen of establishing 50 of one deck and one deck folding shape silk screen, be appreciated that ground, this capillary structure layer 30 also can be by three layers or more multi-layered by plane silk screen 50 and the mutually stacked screen net structure that forms of folding shape silk screen, as shown in Figure 8, capillary structure layer 30 ' comprises two-layer plane silk screen 50 and is folded in folding shape silk screen 40 between this two plane silk screen 50 that capillary structure layer 30 as shown in Figure 9 " comprise two-layer folding shape silk screen 40 and be folded in plane silk screen 50 between this two foldings shape silk screen 40.
The above each silk screen layer all adopts the silk screen of identical mesh, the hole that is each silk screen is identical, be appreciated that ground, the hole of each silk screen also can be different, adopt the silk screen of different meshes as plane silk screen and folding shape silk screen, in like manner, various silk screens also can adopt the silk screen of different meshes respectively, as shown in figure 10, capillary structure layer 130 comprises two-layer folding shape silk screen 140,140 ' and one is folded in this two foldings shape silk screen 140, plane silk screen 150 between 140 ', wherein roll over the hole minimum of shape silk screen 140, plane silk screen 150 holes are placed in the middle, folding shape silk screen 140 ' hole maximum.
Figure 11 is the manufacture method flow chart of heat pipe 10 of the present invention, and it may further comprise the steps: at least one plane silk screen 50 and in the form of sheets folding shape silk screen 40 in the form of sheets at first is provided; Silk screen 40,50 with sheet is rolled into cylindrical body then; At last cylindrical body is inserted in the body 20.Introduce the manufacture method of heat tube capillary structure layer of the present invention in detail below in conjunction with Figure 12 to Figure 13.
At first, one plane silk screen 50 (as shown in Figure 2) and 40 (as shown in Figure 3) of a folding shape silk screen are provided, this folding shape silk screen 40 is to be formed by plane silk screen 50 bendings, simultaneously plane silk screen 50 is carried out punching press by two moulds up and down, thereby form folding shape silk screen 40, be appreciated that ground, this folding shape silk screen 40 also can be made by alternate manner.
Then, as shown in figure 11, one pull bar 100 is provided, this pull bar 100 is the rounded solid hard barred body of a cross section, as the stainless steel barred body, be appreciated that ground, the shape of cross section of pull bar 100 also can be other shapes such as ellipse, square, triangle, and its concrete shape can be decided according to the shape of cross section of body 20.At first the plane silk screen 50 with this sheet is set as tubular along pull bar 100 volumes, and the folding shape silk screen 40 with sheet is rolled into tubular along plane silk screen 50 outer surfaces that are rolled into tubular then, forms the cylindrical body silk screen.
Be appreciated that ground, above-mentioned volume is established in the process, also the plane silk screen 50 and the folding shape silk screen 40 of sheet at first can be built up one, rolls up along the outer surface of pull bar 100 in the lump then and is set as the cylindrical body silk screen.
At last, as shown in figure 11, pull bar 100 and cylindrical body are inserted in the body 20 in the lump, then pull bar 100 is taken out, this cylindrical body promptly forms the capillary structure layer 30 of heat pipe 10.
In this process, thereby can capillary structure layer 30 more closely be contacted with body 20 in back body 20 is flattened that pull bar 100 takes out.Be appreciated that ground, thereby also can be fixed in silk screen in the heat pipe 10 or mode such as logical sintering is fixed silk screen and formed capillary structure layer 30 by in heat pipe 10, inserting an elastomer.
In the above-mentioned processing procedure, select the silk screen of different structure for use or silk screen is done difference arrange, the structure of formed capillary structure layer is also inequality, as selects the porous structure layer 530 that can obtain as shown in Figure 5 as Fig. 2 and plane silk screen 50 shown in Figure 4 and folding shape silk screen 440 for use.Select for use two-layer plane silk screen 50 and folding shape silk screen 40 alternately to roll up and establish the porous structure layer 30 ' that can form as shown in Figure 8.
After the making of finishing above-mentioned capillary structure layer 30, vacuumize and seal to body 20 filling hydraulic fluids and to body 20, can obtain heat pipe 10.
Claims (12)
1. heat pipe, comprise a body and the capillary structure layer that closely contacts with the inboard wall of tube body face, this capillary structure layer comprises along the radially folded several layers silk screen of establishing of heat pipe, it is characterized in that: this several layers silk screen comprises that being plane silk screen and along one of heat pipe circumference expansion at least is the silk screen of rolling over shape, and this folding shape silk screen forms in heat pipe along the axial runner of heat pipe.
2. heat pipe as claimed in claim 1 is characterized in that: this folding shape silk screen bends continuously along the heat pipe circumferencial direction, forms cross section and be trapezoidal runner in heat pipe.
3. heat pipe as claimed in claim 1 is characterized in that: this folding shape silk screen indentation bends continuously, forms cross section runner triangular in shape in heat pipe.
4. heat pipe as claimed in claim 1, it is characterized in that: this folding shape silk screen comprises horizontal segment and the zigzag bending segment that is arranged alternately, and forms cross section first flow and the cross section triangular in shape that distributes along the heat pipe circle alternate and be the second trapezoidal runner in heat pipe.
5. heat pipe as claimed in claim 1 is characterized in that: these some silk screen layers comprise two-layer at least plane silk screen and are folded in folding shape silk screen between this two-layer plane silk screen.
6. heat pipe as claimed in claim 5 is characterized in that: the pore size difference of two plane silk screens.
7. heat pipe as claimed in claim 1 is characterized in that: these some silk screen layers comprise two-layer at least folding shape silk screen and are folded in plane silk screen between this two-layer folding shape silk screen.
8. heat pipe as claimed in claim 7 is characterized in that: the pore size difference of two folding shape silk screens.
9. as any described heat pipe in the claim 1 to 8, it is characterized in that: this folding shape silk screen is different with the pore size of plane silk screen.
10. heat control making method may further comprise the steps:
1) provides a sheet of at least folding shape silk screen and a sheet of plane silk screen;
2) the sheet silk screen successively is rolled into the tubular silk screen;
3) the tubular silk screen is inserted in the tube body of heat pipe.
11. heat control making method as claimed in claim 10 is characterized in that: comprise also in the step 3) that the body to inserting behind the silk screen flattens, thereby silk screen contacts closely with body.
12. as claim 10 or 11 described heat control making methods, it is characterized in that: the folding shape silk screen of this sheet is that the plane silk screen bending with sheet forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100331043A CN1811328A (en) | 2005-01-29 | 2005-01-29 | Heat pipe and its making process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100331043A CN1811328A (en) | 2005-01-29 | 2005-01-29 | Heat pipe and its making process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1811328A true CN1811328A (en) | 2006-08-02 |
Family
ID=36844382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005100331043A Pending CN1811328A (en) | 2005-01-29 | 2005-01-29 | Heat pipe and its making process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1811328A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008089599A1 (en) * | 2007-01-19 | 2008-07-31 | Jen-Shyan Chen | Heat pipe having flat end face and method thereof |
| CN102192667A (en) * | 2010-03-05 | 2011-09-21 | 泰硕电子股份有限公司 | Heat pipe |
| CN102735086A (en) * | 2011-04-13 | 2012-10-17 | 奇鋐科技股份有限公司 | Heat pipe manufacturing method |
| CN103363829A (en) * | 2012-04-03 | 2013-10-23 | 富瑞精密组件（昆山）有限公司 | Heat pipe |
| CN111595188A (en) * | 2020-06-03 | 2020-08-28 | 常州大学 | Micro heat pipe with multi-stage capillary structure and preparation method thereof |
-
2005
- 2005-01-29 CN CNA2005100331043A patent/CN1811328A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008089599A1 (en) * | 2007-01-19 | 2008-07-31 | Jen-Shyan Chen | Heat pipe having flat end face and method thereof |
| CN102192667A (en) * | 2010-03-05 | 2011-09-21 | 泰硕电子股份有限公司 | Heat pipe |
| CN102735086A (en) * | 2011-04-13 | 2012-10-17 | 奇鋐科技股份有限公司 | Heat pipe manufacturing method |
| CN103363829A (en) * | 2012-04-03 | 2013-10-23 | 富瑞精密组件（昆山）有限公司 | Heat pipe |
| CN111595188A (en) * | 2020-06-03 | 2020-08-28 | 常州大学 | Micro heat pipe with multi-stage capillary structure and preparation method thereof |
| CN111595188B (en) * | 2020-06-03 | 2021-07-27 | 常州大学 | Micro heat pipe with multi-stage capillary structure and preparation method thereof |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |