CN207035916U - A kind of composite heat pipe - Google Patents
A kind of composite heat pipe Download PDFInfo
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- CN207035916U CN207035916U CN201720826854.4U CN201720826854U CN207035916U CN 207035916 U CN207035916 U CN 207035916U CN 201720826854 U CN201720826854 U CN 201720826854U CN 207035916 U CN207035916 U CN 207035916U
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- heat pipe
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- capillary structure
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- liquid
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Abstract
The utility model discloses a kind of composite heat pipe, it is desirable to provide one kind can significantly reduce thermal resistance, solve the problems, such as invalid end, be the composite heat pipe of hard state under normal temperature；Its technical scheme includes shell, one end of the shell is evaporator section, the other end is condensation segment, working fluid is filled with the shell, the inner wall of tube shell sets fluted liquid-sucking core vertically, and described liquid-sucking core wall has also sintered interior capillary structure layer, and also sintering has interior tube body in described capillary structure layer, described interior capillary structure layer is close to evaporator section one end, the described length of interior capillary structure layer and the equal length of evaporator section；Belong to radiating device technical field.
Description
Technical field
A kind of heat pipe is the utility model is related to, is to be related to a kind of composite heat pipe specifically, belongs to Heat sink technology neck
Domain.
Background technology
Heat pipe is the quick thermal transport property that make use of heat-conduction principle and phase change medium, through heat pipe by thermal objects
Heat is delivered to outside thermal source rapidly, and its capacity of heat transmission exceedes the capacity of heat transmission of any known metal.
Common heat pipe is made up of shell, liquid-sucking core and end cap, and appropriate working solution is filled with after the negative pressure that will be pumped into pipe
Body, make to be close to it is hydraulically full in the liquid-sucking core capillary-porous material of inside pipe wall after sealed.One end of pipe is evaporator section, another
Hold as condensation segment, needed that two sections of centres adiabatic section can be arranged according to application.Liquid when one end of heat pipe is heated in Mao Renxin
Evacuator body vaporizes, and steam flows to other end releasing heat under small pressure difference and condenses into liquid, and liquid leans on along porous material again
Evaporator section is flowed back in the effect of capillary force.So circulation not oneself, heat reaches another-end by one end of heat pipe, realizes that heat shifts.
Conventional liquid-sucking core mainly has silk screen core, groove core, the class of sintered metallic core three.
Metal undrawn yarn net liquid-sucking core is most common liquid-sucking core, is formed by multiple layer metal silk screen winding, between layers
Interlaced, its is simple in construction, easily manufactured, cost is cheap, but shortcoming is liquid flowing resistance and wire in this structure
Net volume around tightness it is relevant, have gap between stratum reticulare and between silk screen and tube wall, cause thermal resistance larger.
Groove-type liquid-sucking core, the backflow of liquid phase working media is set to realize liquid-sucking core using the effect of conduit interfacial tension
Function.Groove-type liquid-sucking core typically has two kinds of forms of axial groove and ring groove, and axial groove liquid-sucking core is in heat pipe inner wall
Some fluid passages of processing, are integral with wall.This feature brings both sides advantage：First, wall and liquid-sucking core
Thermal resistance between structure is smaller；Secondly, suitability for secondary processing is good, is not in liquid-sucking core in the process such as bending, flattening
Structure peels off even obscission with wall, maintains good heat transfer property.Groove-type liquid-sucking core is in heat tube capillary structure
One kind relatively simple to manufacture, is manufactured using integral forming technique, and cost is the 2/3 of general sintering metal wick type heat pipe.
But channel heat pipe have one it is fairly obvious the shortcomings that, the problem of low in heat transfer efficiency, thermal resistance is larger be present.
Sintering metal liquid-sucking core is to sinter layer of metal powder or metallic fiber in heat pipe inner wall, i.e. sintering metal powder is inhaled
Wick-containing and sintering metal felt liquid-sucking core.This liquid-sucking core has good contact with heat pipe inner wall, therefore has less thermal resistance, together
When sintering metal hole it is smaller, larger capillary pressure can be produced, but also increase liquid backflow resistance, but due to
Sintering metal liquid-sucking core is needed to make annealing treatment, so whole heat pipe is finally soft state, use range is restricted.
Utility model content
In view of the above-mentioned problems, the purpose of this utility model, which is to provide one kind, can significantly reduce thermal resistance, solve the problems, such as invalid end,
It is the composite heat pipe of hard state under normal temperature.
A kind of composite heat pipe, including shell, one end of the shell is evaporator section, and the other end is condensation segment, the shell
Interior to be filled with working fluid, the inner wall of tube shell sets fluted liquid-sucking core vertically, and described liquid-sucking core wall has also sintered interior
Capillary structure layer, also sintering has an interior tube body in described capillary structure layer, described interior capillary structure layer close to evaporator section one end,
The described length of interior capillary structure layer and the equal length of evaporator section.
As it is of the present utility model further preferably, a kind of above-mentioned composite heat pipe, described groove be rectangle groove or
Person's trapezoidal groove or triangular groove.
As it is of the present utility model further preferably, a kind of above-mentioned composite heat pipe, described interior capillary structure layer be by
The powder Rotating fields that red copper powder particle sintering forms.
As it is of the present utility model further preferably, above-mentioned a kind of composite heat pipe, in described liquid-sucking core and interior tube body
Super hydrophilic nano paint layer is coated with wall.
Compared with prior art, technical scheme provided by the utility model has following technological merit：
1st, technical scheme provided by the utility model sinters in plough groove type liquid-sucking core heat pipe has interior sintering to have capillary layer knot
Structure, sintering has interior tube body in interior capillary Rotating fields, that is, ensure that the generally hard state structure of heat pipe, efficiently solve plough groove type again
The invalid end of liquid-sucking core ask with heat pipe thermal resistance it is big the problem of；Technical approach thermal resistance provided by the utility model significantly reduces, in water
Square to heat power be more than 30W, be more than 80W in the heat power of vertical direction.
2nd, technical scheme provided by the utility model is coated with super hydrophilic nano paint layer in the cavity of capillary structure layer,
The absorption affinity of capillary is effectively increased, the mobility of worker quality liquid is improved, adds heat dissipation, reduces backflow resistance
Power.
Brief description of the drawings
The composite heat pipe structural representation that Fig. 1 embodiments 1 provide；
Fig. 2 is A-A faces sectional view in Fig. 1；
Fig. 3 is the partial enlarged drawing in P faces in Fig. 2；
The composite heat pipe structural representation that Fig. 4 embodiments 2 provide；
Fig. 5 is A-A faces sectional view in Fig. 4；
Fig. 6 is the partial enlarged drawing in P faces in Fig. 5；
Symbology element and its similar component are as follows in figure：
Shell 1, evaporator section 2, condensation segment 3, liquid-sucking core 4, interior capillary structure layer 5, interior tube body 6, super hydrophilic nano paint layer
7。
Embodiment
Claim of the present utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
Implement 1
A kind of composite heat pipe disclosed in the utility model, refer to Fig. 1 and Fig. 2, including shell 1, one end of the shell 1
For evaporator section 2, the other end is condensation segment 3, is filled with working fluid in the shell 1, the inwall of shell 1 is provided with ditch vertically
The liquid-sucking core 4 of groove.
For the ease of heat transfer, the material of described shell 1 may be selected from copper, stainless steel, aluminium or alloy, the radial direction of shell 1
Section is circle, or ellipse, rectangle or triangle etc..The caliber of shell 1 is 2-100 millimeters, and the length of shell 1 can
, can be from several millimeters to tens meters depending on being actually needed, the thickness of shell 1 is 0.1-1 millimeters, preferably 0. millimeter.
It is furthermore preferred that described very low power is rectangle very low power either trapezoidal very low power or triangle very low power, micro- ditch
Groove plays the same effect of capillary so that the liquid of backflow is flowed rapidly by very low power in heat pipe.
Due to the evaporator section 2 in heat pipe, the working fluid of liquid-sucking core 4 is taken away heat by thermal evaporation, and the heat is work
The evaporation latent heat of fluid, steam flows to the condensation segment 3 of heat pipe from central passage, condenses into liquid, while releases latent heat, in groove
In the presence of capillary force, liquid is back to evaporator section 2.So, just complete a closed circulation, so as to by substantial amounts of heat from
Bringing-up section passes to radiating segment.
But in the heat pipe, in the flow process of condensation segment 3 that usual steam flows to heat pipe from central passage, due to existing
Larger thermal resistance, therefore, commonly known as invalid end very low in the tube body heat dissipation close to the one end of evaporator section 2, therefore
The described wall of liquid-sucking core 4 also sintered interior capillary structure layer 5, also sintering has interior tube body 6 in described interior capillary structure layer 5,
Described interior capillary structure layer 5 is close to the one end of evaporator section 2, the length of described interior capillary structure layer 5 and the length phase of evaporator section 2
Deng.
Embodiment 2
A kind of composite heat pipe provided by the utility model is identical with the composite heat pipe structure that embodiment 1 provides, and refers to Fig. 3
And figure, its difference are, in order to increase the absorption affinity of liquid-adsorption layer, accelerate the flowing of working fluid, increase heat dispersion,
The wall of liquid-sucking core 4, and the outer wall of interior tube body 6 are coated with super hydrophilic nano paint layer 7.
The super hydrophilic nano paint that the utility model uses, include the component of following weight number：Epoxy resin 4kg；Positive silicon
Isopropyl propionate 7kg；N- β-(aminoethyl)-γ-aminopropyltriethoxy dimethoxysilane 18kg；Resting form dicy-curing agent 1kg；
Nanoscale white graphite alkene 1kg；Nanoscale graphite alkene powder 0.3kg；Hexamethylene 20kg, ethanol 20kg.
Its preparation method comprises the steps successively：
1) each component is weighed；
2) N- β-(aminoethyl)-γ-aminopropyltriethoxy dimethoxysilane is added dropwise to ethanol, stirring at normal temperature 0.5h, subtracted
Pressure distillation boils off ethanol；
3) epoxy resin is heated and melted, add positive isopropyl silicate, continued after being heated to 150 DEG C to 155 DEG C insulation 2h,
Obtained material in step 1 is added, 3-4 hours is incubated in 150 to 155 DEG C, is cooled to normal temperature；
4) resting form dicy-curing agent, nanoscale white graphite alkene, nanoscale stone are added in the material prepared to step 3)
Black alkene powder 0.1-0.5 and hexamethylene, stir。
Above content is to combine specific preferred embodiment, further detailed description of the utility model, no
It can assert that specific implementation of the present utility model is confined to these explanations.Without departing from the concept of the premise utility, also
Some simple deduction or replace can be made, should all be considered as belonging to what the utility model was determined by the claims submitted
Scope of patent protection.
Claims (4)
1. a kind of composite heat pipe, including shell (1), one end of the shell (1) is evaporator section (2), and the other end is condensation segment
(3), it is filled with working fluid in the shell (1), it is characterised in that shell (1) inwall sets fluted suction vertically
Wick-containing (4), described liquid-sucking core (4) wall have also sintered interior capillary structure layer (5), also burnt in described interior capillary structure layer (5)
Have an interior tube body (6), described interior capillary structure layer (5) close to evaporator section (2) one end, described interior capillary structure layer (5)
Length and the equal length of evaporator section (2).
2. a kind of composite heat pipe according to claim 1, it is characterised in that described groove is rectangle groove or trapezoidal
Groove or triangular groove.
3. a kind of composite heat pipe according to claim 1, it is characterised in that described interior capillary structure layer (5) is by purple
The powder Rotating fields that copper powder particles sintering forms.
4. a kind of composite heat pipe according to claim 1, it is characterised in that in described liquid-sucking core (4) and interior tube body (6)
Super hydrophilic nano paint layer (7) is coated with wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720826854.4U CN207035916U (en) | 2017-07-10 | 2017-07-10 | A kind of composite heat pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720826854.4U CN207035916U (en) | 2017-07-10 | 2017-07-10 | A kind of composite heat pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207035916U true CN207035916U (en) | 2018-02-23 |
Family
ID=61467510
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720826854.4U Active CN207035916U (en) | 2017-07-10 | 2017-07-10 | A kind of composite heat pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207035916U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109631633A (en) * | 2018-12-29 | 2019-04-16 | 中国科学院合肥物质科学研究院 | A kind of hyperthermia heat pipe structure promoting anti-gravity ability |
| CN116625148A (en) * | 2023-05-18 | 2023-08-22 | 广州麦伦电子科技有限公司 | Antigravity heat pipe and manufacturing method thereof |
-
2017
- 2017-07-10 CN CN201720826854.4U patent/CN207035916U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109631633A (en) * | 2018-12-29 | 2019-04-16 | 中国科学院合肥物质科学研究院 | A kind of hyperthermia heat pipe structure promoting anti-gravity ability |
| CN116625148A (en) * | 2023-05-18 | 2023-08-22 | 广州麦伦电子科技有限公司 | Antigravity heat pipe and manufacturing method thereof |
| CN116625148B (en) * | 2023-05-18 | 2023-11-28 | 广州麦伦电子科技有限公司 | Antigravity heat pipe and manufacturing method thereof |
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