CN207300016U - A kind of MULTILAYER COMPOSITE liquid-sucking core flat-plate type micro heat pipe - Google Patents
A kind of MULTILAYER COMPOSITE liquid-sucking core flat-plate type micro heat pipe Download PDFInfo
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- CN207300016U CN207300016U CN201720066815.9U CN201720066815U CN207300016U CN 207300016 U CN207300016 U CN 207300016U CN 201720066815 U CN201720066815 U CN 201720066815U CN 207300016 U CN207300016 U CN 207300016U
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- heat pipe
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- micro heat
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Abstract
The utility model discloses a kind of MULTILAYER COMPOSITE liquid-sucking core flat-plate type micro heat pipe, including upper cover plate, fine mesh structure, thick diamond structure, dowel, minute groove substrate, liquid injection pipe.The utility model lies in that the compound obtained flat-plate type micro heat pipe of double-deck netted liquid-sucking core that the capillary groove of Laser Processing and 3D printing are shaped, the capillary force that the internal lifting worker quality liquid by minute groove flows back, coordinates the double-deck net structure of 3D printing shaping to promote flat-plate type micro heat pipe in the permeability and capillary suction force of radial direction.Its advantage is to strengthen working medium evaporative condenser so as to lift the heat transfer property of flat-plate type micro heat pipe, while net structure is placed on to play a supportive role on capillary groove prevents the conquassation of groove, also lifts the intensity of flat-plate type micro heat pipe.
Description
Technical field
The utility model is used for microelectronic component field of heat transfer, more particularly to a kind of composite liquid sucking of enhanced heat transfer performance
Core flat-plate type micro heat pipe.
Background technology
Micro heat pipe is a kind of effective radiating element using phase-change heat transfer as basic functional principle.With electronics and information industry
Development, the life and reliability of electronic product radiating issue concerns to electronic equipment, its performance drops with the rise of temperature
Low, crash rate is also with its temperature exponent function relation.Micro heat pipe can successfully solve the small electronic device such as microelectronic chip
Heat dissipation problem, and provide the working environment of stabilization for it.Micro heat pipe can also meet wanting for the high uniform temperature of many sensitive devices
Ask, so micro heat pipe is widely used in fields such as space flight and aviation, biology, medical treatment.And in microelectronics and LED illumination and
The electronic chip field of high heat flux density, flat-plate type micro heat pipe have heat dissipation area it is big, good heat dissipation effect, good startability and
Uniform temperature；It is easily fabricated go out smooth, outer surface that geometric compliance is good, can be fitted closely with electronic product.
The performance of micro heat pipe depends primarily upon the performance of liquid-sucking core, when capillary force draw back liquid cannot meet to evaporate it is required
During amount, the liquid-sucking core of evaporation ends dries up, and evaporation ends tube wall temperature steeply rises, and causes tube wall to burn out.Due in flat-plate type micro heat pipe
The minimum space in portion and low liquid filled ratio reduce thermal resistance and increase so with greater need for the capillary reflux capability for strengthening internal liquid-sucking core
Add heat output.Thus the size of the capillary force driving liquid reflux of flat-plate type micro heat pipe liquid-sucking core is to restrict micro heat pipe ability to work
Key factor.
Therefore, it is necessary to providing a kind of can increase capillary pumped reflux capability and have the new flat of enough permeabilities again
Plate micro heat pipe, and strengthen its conduct heat heat conductivility and internal stability performance.
Utility model content
The purpose of this utility model is that the deficiency for existing flat-plate type micro heat pipe preparation method, there is provided one kind has high pass
The composite liquid sucking core type flat-plate type micro heat pipe based on 3D printing and laser processing technology of heat, composite liquid sucking core tablet heat
The capillary groove that pipe has the double-deck lamina reticularis of 3D printing different structure and laser machines out, lifting capillary force promote working medium
Reflux, obtains the flat-plate type micro heat pipe of higher heat output.
The purpose of this utility model is achieved through the following technical solutions：
A kind of MULTILAYER COMPOSITE liquid-sucking core flat-plate type micro heat pipe includes upper cover plate, minute groove substrate, liquid injection pipe, pair of 3D printing
The netted liquid-sucking core of layer；
The minute groove substrate, it opens the groove of 1~5mm depths, preferable 2mm grooves by milling cutter, and then side opens one
The fine groove of a 1~2mm, preferable 1mm grooves pre-preparation places liquid injection pipe, then by optical-fiber laser system of processing in groove
50~200 μm of wide microflutes are etched, preferable 150mm wide completes the processing of tube shell；
The double-deck netted liquid-sucking core of the 3D printing is designed in CAD (CAD) software, and double-deck is upper
Layer is that fine mesh structure bottom is to be connected and rise support between coarse net diamond structure structure by supporting rib, and by designed three
Dimension structure graph is directed into metal 3D printing system, and 3-D graphic is carried out slicing treatment by system, then passes through copper metal powder
Successively powdering while, laser is sintered shaping to structured constituency, repaves one layer of copper metal powder afterwards and burns again
Knot, and so on obtains the double-deck liquid sucting core structure of three-dimensional, and the square fine mesh structure in upper strata provides big on vapour-liquid interface
Capillary pressure, the bottom contacted with liquid reduce the reflux resistance of working medium using thicker diamond-mesh lifting permeability；Laser
Processing can prepare high-aspect-ratio, and size is suitable, and tube wall is not carried out to destroy while produce super hydrophilic surface, improves groove
Reflux capability；
The liquid injection pipe is placed in the side groove of 1~2mm, and be communicated with the outside fluid injection vacuum action after encapsulation；
The upper cover plate is placed in minute groove substrate and 3D composite liquid suckings wicking surface and encapsulates whole tablet low-grade fever by welding
Pipe.
Compared with prior art, the utility model has the following advantages：
(1) individual layer, bilayer or the sandwich construction of the composite liquid sucking core prepared by can be oriented by way of 3D printing
To various structures can with every layer it is identical, also can obtain the different liquid sucting core structure of each layer of multilayer；
(2) net structure of 3D printing can play a supportive role inside flat-plate type micro heat pipe again prevents internal groove liquid-sucking core
Conquassation damages；
(3) 3D printing structure has the characteristics that customizable, for different sizes, the heat pipe of different-thickness volume size
Customize corresponding liquid-sucking core composite supporting structure；
(4) Laser Processing can be in two dimensional surface arbitrary scan, and 3D printing can prepare the liquid-sucking core of arbitrary shape, for curved
Bent heat pipe is also applicable.
Brief description of the drawings
Fig. 1 is the composite liquid sucking core flat-plate type micro heat pipe schematic diagram based on 3D printing and laser processing technology.
Fig. 2 is coarse net diamond structure schematic diagram.
Fig. 3 is fine mesh structure diagram.
In Fig. 1：1. upper cover plate；2. fine mesh structure；3. thick diamond structure；4. dowel；5. minute groove substrate；6.
Liquid injection pipe.
Embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples.
Embodiment：
A kind of MULTILAYER COMPOSITE liquid-sucking core flat-plate type micro heat pipe, includes 1. upper cover plates as shown in Figure 1；2. fine mesh structure；It is 3. thick
Diamond structure；4. dowel；5. minute groove substrate；6. liquid injection pipe.
A kind of MULTILAYER COMPOSITE liquid-sucking core flat-plate type micro heat pipe comprises the following steps：
(1) groove of 1~5mm depths, preferable 2mm grooves are opened in substrate with milling cutter first, and then a 1~2mm is opened in side
Fine groove, preferable 1mm grooves pre-preparation places liquid injection pipe, 50 then etched in groove by optical-fiber laser system of processing
~200 μm of wide microflutes, preferable 150mm wide complete the processing of minute groove substrate；
(2) designed in CAD (CAD) software, double-deck upper strata is that fine mesh structure bottom is coarse net
It is connected and plays a supportive role by supporting rib between diamond structure structure；
(3) designed three-dimensional structural graph is directed into metal 3D printing system, system cuts into slices 3-D graphic
Processing, then while by the successively powdering of copper metal powder, laser is sintered shaping, Zhi Houzai to structured constituency
One layer of copper metal powder of paving sinters again, so alternately back and forth obtains the double-deck liquid sucting core structure of three-dimensional；
(4) print double-deck liquid sucting core structure to be adjacent on the microflute face for being placed on Laser Processing, form composite liquid sucking core
Structure；
(5) upper cover plate is covered in minute groove real estate welded seal is carried out to edge again after, and to passing through liquid injection port
Carry out the encapsulation that fluid injection channel closure is completed whole heat pipe by vacuum pumping liquid injection again.
Claims (4)
- A kind of 1. MULTILAYER COMPOSITE liquid-sucking core flat-plate type micro heat pipe, it is characterised in that including：Minute groove substrate, liquid injection pipe, 3D printing Double-deck netted liquid-sucking core, supporting rib, upper cover plate；The minute groove substrate (5) have the vat processed on substrate of milling cutter with And side microflute and Laser Processing minute groove；The liquid injection pipe (6) is placed in the fine groove of substrate side；The 3D printing It is that fine mesh structure (2) lower floor is coarse net diamond structure (3) that double-deck netted liquid-sucking core, which has double-decker upper strata, and passes through branch Support muscle (4), which is connected, to be placed on minute groove substrate (5)；The upper cover plate (1) is placed in minute groove substrate and the compound suctions of 3D Wick-containing surface soldered is packaged into whole flat-plate type micro heat pipe.
- A kind of 2. MULTILAYER COMPOSITE liquid-sucking core flat-plate type micro heat pipe as claimed in claim 1, it is characterised in that：The 3D printing laser is determined It is red copper metal dust or bronze metal powder to the mesh material of thermal sintering.
- A kind of 3. MULTILAYER COMPOSITE liquid-sucking core flat-plate type micro heat pipe as claimed in claim 1, it is characterised in that：The minute groove substrate (5) the big groove depth on is 1~5mm, and the side width of mini longitudinal channels is 1~2mm.
- A kind of 4. MULTILAYER COMPOSITE liquid-sucking core flat-plate type micro heat pipe as claimed in claim 1, it is characterised in that：The minute groove substrate (5) the fine groove of etching is 50~200 μm wide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720066815.9U CN207300016U (en) | 2017-01-12 | 2017-01-12 | A kind of MULTILAYER COMPOSITE liquid-sucking core flat-plate type micro heat pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720066815.9U CN207300016U (en) | 2017-01-12 | 2017-01-12 | A kind of MULTILAYER COMPOSITE liquid-sucking core flat-plate type micro heat pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207300016U true CN207300016U (en) | 2018-05-01 |
Family
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720066815.9U Active CN207300016U (en) | 2017-01-12 | 2017-01-12 | A kind of MULTILAYER COMPOSITE liquid-sucking core flat-plate type micro heat pipe |
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| CN (1) | CN207300016U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106871675A (en) * | 2017-03-22 | 2017-06-20 | 广东工业大学 | A kind of MULTILAYER COMPOSITE liquid-sucking core flat-plate type micro heat pipe and preparation method thereof |
| CN109959289A (en) * | 2019-03-15 | 2019-07-02 | 华南理工大学 | A kind of ultra-thin low-grade fever tube preparation method of antigravity |
| CN110243213A (en) * | 2019-06-24 | 2019-09-17 | 华东理工大学 | A kind of the plate liquid-sucking core and its manufacturing method of composite construction |
| CN110262528A (en) * | 2019-05-30 | 2019-09-20 | 北京空间飞行器总体设计部 | Take off-landing-of a kind of month surface detector moves implementation method |
| CN110385436A (en) * | 2019-08-26 | 2019-10-29 | 厦门大学 | A kind of metal wicks and its manufacturing method with multiple aperture structure feature |
| CN111238277A (en) * | 2020-01-09 | 2020-06-05 | 广东工业大学 | Flat heat pipe with composite liquid absorption core structure |
| CN111660062A (en) * | 2020-05-06 | 2020-09-15 | 中国航天空气动力技术研究院 | High-temperature heat pipe based on 3D printing and forming method thereof |
| CN114888304A (en) * | 2022-05-11 | 2022-08-12 | 华东理工大学 | Manufacturing method of composite porous structure liquid absorption core |
| CN114935272A (en) * | 2022-05-24 | 2022-08-23 | 中国电子科技集团公司第十研究所 | Integrated forming temperature-uniforming plate based on additive manufacturing |
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2017
- 2017-01-12 CN CN201720066815.9U patent/CN207300016U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106871675A (en) * | 2017-03-22 | 2017-06-20 | 广东工业大学 | A kind of MULTILAYER COMPOSITE liquid-sucking core flat-plate type micro heat pipe and preparation method thereof |
| CN109959289A (en) * | 2019-03-15 | 2019-07-02 | 华南理工大学 | A kind of ultra-thin low-grade fever tube preparation method of antigravity |
| CN110262528A (en) * | 2019-05-30 | 2019-09-20 | 北京空间飞行器总体设计部 | Take off-landing-of a kind of month surface detector moves implementation method |
| CN110243213A (en) * | 2019-06-24 | 2019-09-17 | 华东理工大学 | A kind of the plate liquid-sucking core and its manufacturing method of composite construction |
| CN110385436A (en) * | 2019-08-26 | 2019-10-29 | 厦门大学 | A kind of metal wicks and its manufacturing method with multiple aperture structure feature |
| CN111238277A (en) * | 2020-01-09 | 2020-06-05 | 广东工业大学 | Flat heat pipe with composite liquid absorption core structure |
| CN111660062A (en) * | 2020-05-06 | 2020-09-15 | 中国航天空气动力技术研究院 | High-temperature heat pipe based on 3D printing and forming method thereof |
| CN114888304A (en) * | 2022-05-11 | 2022-08-12 | 华东理工大学 | Manufacturing method of composite porous structure liquid absorption core |
| CN114935272A (en) * | 2022-05-24 | 2022-08-23 | 中国电子科技集团公司第十研究所 | Integrated forming temperature-uniforming plate based on additive manufacturing |
| CN114935272B (en) * | 2022-05-24 | 2023-08-04 | 中国电子科技集团公司第十研究所 | Integrated molding samming board based on additive manufacturing |
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