CN207610585U - A kind of gradient porosity fiber sintering formula heat pipe - Google Patents
A kind of gradient porosity fiber sintering formula heat pipe Download PDFInfo
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- CN207610585U CN207610585U CN201721630812.XU CN201721630812U CN207610585U CN 207610585 U CN207610585 U CN 207610585U CN 201721630812 U CN201721630812 U CN 201721630812U CN 207610585 U CN207610585 U CN 207610585U
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- liquid
- porosity
- sucking core
- heat pipe
- shell
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Abstract
The utility model provides a kind of gradient porosity fiber sintering formula heat pipe, the liquid-sucking core of shell and sintering including both ends sealing in shell inner surface, the porosity of the liquid-sucking core axially gradually rises or reduces from one end to the other side along shell, cavity is formed on the inside of the liquid-sucking core, and working media is equipped in the cavity.Liquid-sucking core high porosity part increases the flow that liquid working substance flows back into bringing-up section from condensation segment in the utility model, and low porosity part increases the capillary force of working medium reflux, accelerates working medium back-flow velocity, improve the antigravity performance of heat pipe.
Description
Technical field
The utility model is related to heat pipe manufacturing fields, specifically, being related to a kind of gradient porosity fiber sintering formula heat pipe.
Background technology
Heat pipe is a kind of high-efficiency heat conduction element of internal working medium phase-change heat transfer.According to the opposite position of fire end and condensation end
It sets, the working condition of heat pipe can be divided into gravity auxiliary（Fire end is less than condensation end）, axial zero-g（At fire end and condensation end
In sustained height）And antigravity（Fire end is higher than condensation end）Three kinds of situations.In antigravity, adopting heat pipes for heat transfer limited performance
In capillary limitation.In order to improve the antigravity performance of heat pipe, it is very necessary to develop the liquid-sucking core that comprehensive capillary is had excellent performance.
For current present Research, single structure liquid-sucking core includes groove, woven wire, foam metal, agglomerated powder
End etc.；Composite construction liquid-sucking core includes compound, sintering compound, Based on Dual-Aperture porous material of powder-groove of woven wire-groove etc..
Comprehensive capillary performance includes two aspects of capillary force and permeability.Single structure liquid-sucking core capillary force and permeability two
A aspect mutually restricts, and is extremely difficult to integrate capillary performance well.Compared with the liquid-sucking core of single structure, composite construction liquid-sucking core
Comprehensive capillary performance boost is many, but manufacturing process is complicated, of high cost, limits it and further develops.
Utility model content
The purpose of this utility model is that there are antigravity poor performance or manufacturing process are complicated for existing heat pipe described above
Deficiency, a kind of gradient porosity fiber sintering formula heat pipe that simple in structure, antigravity is had excellent performance is provided.
Technical solution adopted by the utility model to solve its technical problems is：
A kind of gradient porosity fiber sintering formula heat pipe, including both ends sealing shell and sintering shell inner surface suction
The porosity of wick-containing, the liquid-sucking core axially gradually rises or reduces from one end to the other side along shell, in the liquid-sucking core
Side forms cavity, and working media is equipped in the cavity.
Preferably, the liquid-sucking core is divided axially into several sections along shell, and each section of porosity is axial from one end along shell
It gradually rises or reduces to the other end.
Preferably, the high one end of liquid-sucking core porosity is condensation segment in the shell, and the low one end of liquid-sucking core porosity is
Bringing-up section.
Preferably, the porosity change of the liquid-sucking core ranging from 70% ~ 95%.
Preferably, the shell is pipe, and material is any one of copper, aluminium or stainless steel.
Preferably, the material of the liquid-sucking core is any one of copper fiber, aluminum fiber or stainless steel fibre.
The utility model compared with the existing technology, has the following advantages and effect：
In the heat pipe of the utility model, the liquid-sucking core porosity gradually rises in an axial direction（Or it continuously decreases）, condensation segment
Porosity it is high, the porosity of bringing-up section is low.Liquid-sucking core high porosity part, which increases liquid working substance and flowed back into from condensation segment, to be added
The flow of hot arc, low porosity part increase the capillary force of working medium reflux, accelerate working medium back-flow velocity, improve heat pipe
Antigravity performance.Meanwhile manufacturing process is simple, is suitble to mass production.
Description of the drawings
Fig. 1 is the gradient porosity fiber sintering formula heat pipe vertical section structure schematic diagram of the utility model embodiment.
In figure：1- shells；2- liquid-sucking cores.
Specific implementation mode
The purpose of utility model of the utility model is described in further detail in the following with reference to the drawings and specific embodiments,
Embodiment cannot repeat one by one herein, but therefore the embodiment of the utility model is not defined in following embodiment.
As shown in Figure 1, a kind of gradient porosity fiber sintering formula heat pipe, including the shell 1 of both ends sealing and sintering are in pipe
The liquid-sucking core 2 of 1 inner surface of shell, the shell 1 are pipe, and material is any one of copper, aluminium or stainless steel, the liquid-sucking core
2 insides form cavity, are equipped with working media in the cavity, working media includes water, alcohol, acetone etc.；The liquid-sucking core 2
Five sections are axially uniformly divided into along shell 1, each section of porosity axially gradually rises or reduces from one end to the other side along shell 1,
Wherein, the high one end of 2 porosity of liquid-sucking core is condensation segment in the shell 1, and the low one end of 2 porosity of liquid-sucking core is bringing-up section,
Centre is adiabatic section.
The porosity change of the liquid-sucking core 2 ranging from 70% ~ 95%, in the present embodiment, each section of porosity is from low to high
It is followed successively by 75%, 79%, 83%, 87%, 91%.
The material of the liquid-sucking core 2 is any one of copper fiber, aluminum fiber or stainless steel fibre.
A kind of manufacturing method of such as gradient porosity fiber sintering formula heat pipe, includes the following steps：
1）Fixed shell 1, cylindrical mandrel is inserted, and its axis is made to be overlapped with 1 axis of shell；
2）The porosity of liquid-sucking core 2 distribution situation in an axial direction and each section of length are set；
3）Fiber is cut short with shearing equipment, control fiber length is 5 ~ 10mm；
4）It calculates and weighs the fiber quality corresponded in each section needed for porosity；
5）The fiber of quality needed for load weighted corresponding porosity is successively filled into shell 1 with the gap of plug, is often filled out
It fills after the fiber of primary corresponding porosity by being compacted to fiber between hollow pipe insertion shell 1 and plug；
6）It fills and carries out solid-phase sintering after being compacted each section of fiber, take out plug later；
7）First by 1 one end closure of shell, working media, 1 other end of sealed after being vacuumized shell is then perfused.
Specifically, step 4）In, each section of the filling length of each section fibre and 2 different porosities of liquid-sucking core after compacting
It is consistent to set length, ensures that each section of sintered porosity meets the requirements.
Specifically, step 4）In, the filling and compacting of the fiber are the porositys according to each section in liquid-sucking core 2 by low
Supreme sequence carries out successively, mainly prevents from being sequentially filled in compacting process, and subsequent operation padding and compacting operation can be to
The density and length for being filled through the segment of fiber of compacting interfere, to influence each section of sintered porosity, if first filling and
It is compacted the low segment of fiber of porosity, then gradually fills and is compacted the higher segment of fiber of porosity, then the interference can be reduced to
Minimum further increases the precision of each section of porosity in liquid-sucking core 2.
In the heat pipe that above-described embodiment provides, the liquid-sucking core porosity gradually rises in an axial direction（Or it continuously decreases）, cold
The porosity of solidifying section is high, and the porosity of bringing-up section is low.Liquid-sucking core high porosity part increases liquid working substance and flows back from condensation segment
To the flow of bringing-up section, low porosity part increases the capillary force of working medium reflux, accelerates working medium back-flow velocity, improve heat
The antigravity performance of pipe.Meanwhile manufacturing process is simple, is suitble to mass production.
As described above, the utility model can be realized preferably.
Above-described embodiment of the utility model is only intended to clearly illustrate the utility model example, and is not
Restriction to the embodiment of the utility model.For those of ordinary skill in the art, on the basis of above description
On can also make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.
All any modification, equivalent and improvement made within the spirit and principle of the present invention etc., should be included in this reality
Within novel scope of the claims.
Claims (6)
1. a kind of gradient porosity fiber sintering formula heat pipe, including the shell (1) of both ends sealing and sintering are in shell (1) inner surface
Liquid-sucking core (2), which is characterized in that the porosity of the liquid-sucking core (2) is axial gradual from one end to the other side along shell (1)
It is raised and lowered, forms cavity on the inside of the liquid-sucking core (2), working media is equipped in the cavity.
2. a kind of gradient porosity fiber sintering formula heat pipe according to claim 1, which is characterized in that the liquid-sucking core
(2) several sections are divided axially into along shell (1), each section of porosity axially gradually risen from one end to the other side along shell (1) or
It reduces.
3. a kind of gradient porosity fiber sintering formula heat pipe according to claim 1, which is characterized in that the shell (1)
The high one end of middle liquid-sucking core (2) porosity is condensation segment, and the low one end of liquid-sucking core (2) porosity is bringing-up section.
4. a kind of gradient porosity fiber sintering formula heat pipe according to claim 1, which is characterized in that the liquid-sucking core
(2) porosity change ranging from 70% ~ 95%.
5. a kind of gradient porosity fiber sintering formula heat pipe according to claim 1, which is characterized in that the shell (1)
For pipe, material is any one of copper, aluminium or stainless steel.
6. a kind of gradient porosity fiber sintering formula heat pipe according to claim 1, which is characterized in that the liquid-sucking core
(2) material is any one of copper fiber, aluminum fiber or stainless steel fibre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721630812.XU CN207610585U (en) | 2017-11-29 | 2017-11-29 | A kind of gradient porosity fiber sintering formula heat pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721630812.XU CN207610585U (en) | 2017-11-29 | 2017-11-29 | A kind of gradient porosity fiber sintering formula heat pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207610585U true CN207610585U (en) | 2018-07-13 |
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ID=62796854
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721630812.XU Expired - Fee Related CN207610585U (en) | 2017-11-29 | 2017-11-29 | A kind of gradient porosity fiber sintering formula heat pipe |
Country Status (1)
| Country | Link |
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| CN (1) | CN207610585U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110736376A (en) * | 2018-07-18 | 2020-01-31 | 实迈公司 | Heat pipe having a wick structure with variable permeability |
-
2017
- 2017-11-29 CN CN201721630812.XU patent/CN207610585U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110736376A (en) * | 2018-07-18 | 2020-01-31 | 实迈公司 | Heat pipe having a wick structure with variable permeability |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180713 Termination date: 20191129 |