CN106604621A - Micro-channel aluminum vapor chamber - Google Patents
Micro-channel aluminum vapor chamber Download PDFInfo
- Publication number
- CN106604621A CN106604621A CN201710058273.5A CN201710058273A CN106604621A CN 106604621 A CN106604621 A CN 106604621A CN 201710058273 A CN201710058273 A CN 201710058273A CN 106604621 A CN106604621 A CN 106604621A
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- CN
- China
- Prior art keywords
- tube sheet
- aluminium
- soaking plate
- microchannel
- hook groove
- Prior art date
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
- H05K7/20336—Heat pipes, e.g. wicks or capillary pumps
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
The invention provides a micro-channel aluminum vapor chamber. The vapor chamber comprises a collecting pipe. Several tube plates which are arranged with intervals are arranged in the collecting pipe along a length extension direction. The tube plates are provided with microchannels. A phase transition working medium is arranged in the collecting pipe. The vapor chamber is characterized in that an inner wall of the collecting pipe is provided with a grooved capillary structure; the grooved capillary structure and the collecting pipe form one piece; the grooved capillary structure surrounds the tube plates; the tube plates are aluminum plates; and a capillary suction liquid core is arranged on each tube plate. By using the micro-channel aluminum vapor chamber, a horizontal direction heat transfer effect is not influenced and simultaneously a temperature difference at an inverse gravity direction can be controlled within 5 degree; and meanwhile, a low temperature icing problem is solved, and the vapor chamber can be normally used in a low temperature environment of minus 40 DEG C-minus 80 DEG C.
Description
Technical field
The invention belongs to the heat conduction technical field that radiates, and in particular to a kind of microchannel aluminium soaking plate.
Background technology
With the development of technology, the collection of electronic devices and components is increasing on a large scale, the heat produced in its unit volume
It is increasing, at the same time it is available for that the effective area of dissipation for utilizing is less and less, heat dissipation problem becomes restriction electronic devices and components
A collection key factor on a large scale.Copper heat pipe is a kind of passive heat-transfer device of two-phase of high efficient and reliable, using Working fluid phase changing reality
The transmission of existing heat, its high stability and efficient heat-sinking capability make it be widely used in field of radiating.But, with coloured
Metal price be incremented by, and heat management require raising, traditional copper heat pipe-type radiating mode is from cost and the utilization of resources
There is certain limitation, in this case microchannel hot plate arises at the historic moment, microchannel hot plate is to process to interlock on tube sheet
, in 50um or so, passage depth-width ratio is about 10, by phase-change working substance for the microchannel net structure of stacking, channel width and channel wall thickness
In microchannel, interior circulation is conducting heat.At present most microchannel hot plates on the market do not have antigravity, only in level
There are heat transfer advantages on direction, on inverse gravity direction, substantially without heat-transfer effect, the temperature difference is generally more than 15 °；On the other hand,
Using water as phase-change working substance more than current microchannel hot plate, water will freeze in subzero, therefore can not be in subzero low temperature
Used in environment, as above many technical problems all await solving.
The content of the invention
To solve above-mentioned technical problem, the invention provides a kind of microchannel aluminium soaking plate, after use level is not being affected
While the heat-transfer effect of direction, the temperature difference can be controlled within 5 ° on inverse gravity direction, at the same time solve low temperature ice formation issues,
Can normally use in -40 DEG C～more than -80 DEG C of low temperature environment.
To reach above-mentioned purpose, technical scheme is as follows：A kind of microchannel aluminium soaking plate, including header, institute
State and direction is extended along a length thereof in header be provided with several tube sheets being spaced, the tube sheet is provided with microchannel, described
Phase-change working substance is additionally provided with header, it is characterised in that：The inwall of the header is provided with hook groove capillary structure, the hook groove hair
Fine texture is integrally formed with header, and in the hook groove capillary structure is enclosed in each tube sheet, the tube sheet is aluminium sheet, respectively
Capillary wick is equipped with the tube sheet.
In one preferred embodiment of the present invention, further include that the hook groove capillary structure has structure identical some
Individual liquid-sucking core split, is spaced between each liquid-sucking core split, liquid-sucking core split one tube sheet of correspondence, the liquid-sucking core point
In body is enclosed in the corresponding tube sheet, the liquid-sucking core split is provided with the hook groove for phase-change working substance transmission.
In one preferred embodiment of the present invention, further include that the tube sheet is arranged on corresponding liquid-sucking core split
Center.
In one preferred embodiment of the present invention, further include that the liquid-sucking core split is located at the hook of tube sheet both sides
Groove is symmetrical arranged centered on tube sheet.
In one preferred embodiment of the present invention, further include in the hook groove to be provided with capillary wick in also.
In one preferred embodiment of the present invention, further include that the capillary wick is to weave by base material of wire
Imbibition wire netting or imbibition metal tape.
In one preferred embodiment of the present invention, the capillary wick is further included for foaming copper powder or foaming
Aluminium powder.
In one preferred embodiment of the present invention, it is that copper powder or aluminium powder are sintered into further include the capillary wick
The capillary structure of type.
In one preferred embodiment of the present invention, the phase-change working substance is further included for acetone or four oxidative ethanes.
In one preferred embodiment of the present invention, if further including that carried interest aluminium wire is mutually stranded forms the imbibition metal
Band.
The invention has the beneficial effects as follows：The microchannel aluminium soaking plate of the present invention, is not affecting horizontal direction to conduct heat after use
While effect, the temperature difference can be controlled within 5 ° on inverse gravity direction, at the same time solve low temperature ice formation issues, can-
Normally use in 40 DEG C～more than -80 DEG C of low temperature environment.
Description of the drawings
Technical scheme in order to be illustrated more clearly that embodiment of the present invention technology, below will be in the description of embodiment technology
The required accompanying drawing for using is briefly described, it should be apparent that, drawings in the following description are only some realities of the present invention
Example is applied, for those of ordinary skill in the art, on the premise of not paying creative work, can be with according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is the structural representation of microchannel soaking plate in prior art；
Fig. 2 is the structural representation of the preferred embodiment of the present invention.
Wherein：2- headers, 4- tube sheets, 6- hooks groove capillary structure, and 61- liquid-sucking core splits, 8- capillary wicks, 10- is hooked
Groove.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Embodiment
As shown in Fig. 2 a kind of microchannel aluminium soaking plate is disclosed in the present embodiment, including header 2, inside header 2
The vacuum collection liquid space of closing is formed, in collection liquid space phase-change working substance is perfused with, extended along a length thereof direction in header 2 and be provided with
The tube sheet 4 that several are spaced, above-mentioned tube sheet 4 is aluminium sheet, and microchannel is equipped with each tube sheet 4, and microchannel is on tube sheet
, in 50um or so, passage depth-width ratio is about for the microchannel net structure of the intersecting that processing is formed, channel width and channel wall thickness
10；Phase-change working substance evaporates and heats the liquid refrigerant of microchannel outer surface, Working fluid phase changing shape in microchannel interior circulation in evaporation ends
Demarcate so as to produce suction force into vapour-liquid, suction force provides power with this to realize heat for the working medium circulation of whole soaking plate
Transfer, heat is conducted.
The soaking plate of above structure has in the horizontal direction fabulous heat-conducting effect, and the heat on inverse gravity direction is passed
Leading effect does not have advantage, and in order to improve heat-transfer effect of the soaking plate on inverse gravity direction, the inwall of above-mentioned header 2 is provided with hook
Groove capillary structure 6, above-mentioned hook groove capillary structure 6 is integrally formed with header 2, and above-mentioned hook groove capillary structure 6 is by each above-mentioned tube sheet 4
In being enclosed in, on each above-mentioned tube sheet 4 capillary wick 8 is also equipped with；Hook groove capillary structure 6 and the capillary wick 8 on tube sheet 4
Coordinate to improve soaking plate against the thermal conduction effect on gravity direction, after use the same of horizontal direction heat-transfer effect is not being affected
When, the temperature difference can be controlled within 5 ° on inverse gravity direction.
As shown in Fig. 2 above-mentioned hook groove capillary structure 6 is with several liquid-sucking core splits 61 of structure identical, each liquid-sucking core
It is spaced between split 61, one tube sheet 4 of correspondence of liquid-sucking core split 61, above-mentioned liquid-sucking core split 61 will be corresponding
In above-mentioned tube sheet 4 is enclosed in, above-mentioned liquid-sucking core split 61 is provided with the hook groove 10 for the transmission of above-mentioned phase-change working substance, hooks groove 10 and is formed
The capillary force structure that phase-change working substance is moved in collector tube 2, according to it is actually used need to hook groove capillary structure 6 can all with
Hook in the form of groove 10, but not as limitation, it is also possible to increase other capillary force structures, such as set in hook groove 10
There is capillary wick, the capillary force effect of capillary structure unit area is further improved with this, reduce on inverse gravity direction
The temperature difference.
Above-mentioned capillary wick 8 be the imbibition wire netting that woven as base material with wire (preferred copper wire the latter aluminium wire) or
Imbibition metal tape, specifically, by 4～150 strands of wires are mutually stranded above-mentioned imbibition metal tape is formed；But not as office
Limit, according to actually used needs, above-mentioned capillary wick can also be foaming copper powder, foaming aluminium powder, or copper powder, aluminium powder burn
Form the capillary structure of type.The existence form of capillary wick 8 can be changed according to different applicable situations.
Traditional soaking plate adopts water as phase-change working substance, but water will freeze in subzero so that soaking plate is not
Used in environment that can be below -20 DEG C, in order to solve this technical problem, the phase-change working substance of the present invention preferably using acetone or
The oxidative ethane of person four.It is preferred that on the one hand the phase-change working substance for adopting considers the compatibility with aluminium, for reduces cost and optimization resource profit
With rate, the tube sheet 4 of the present invention is preferably using the tube sheet of aluminium material, i.e. aluminium sheet, and acetone and four oxidative ethanes are incompatible with aluminium；It is another
Aspect, using acetone as the soaking plate of phase-change working substance can be more than -40 DEG C environment in normally use, using four oxidative ethanes
As the soaking plate of phase-change working substance can be more than -80 DEG C environment in normally use.
In order to the capillary force for further improving capillary structure is acted on, the uniformity of capillary force effect is at the same time improved, most
Eventually beneficial to the raising of soaking plate entirety heat-conducting effect, above-mentioned tube sheet 4 is arranged on corresponding liquid-sucking core split 61 in this enforcement
Center, above-mentioned liquid-sucking core split 61 be located at the both sides of tube sheet 4 above-mentioned hook groove 10 be symmetrical arranged centered on tube sheet 4.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
Various modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, the present invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope for causing.
Claims (10)
1. a kind of microchannel aluminium soaking plate, including header, extends along a length thereof direction and is provided with several that in the header
The tube sheet at this interval, the tube sheet is provided with microchannel, in the header phase-change working substance is additionally provided with, it is characterised in that：It is described
The inwall of header is provided with hook groove capillary structure, and the hook groove capillary structure is integrally formed with header, the hook groove capillary knot
In structure is enclosed in each tube sheet, the tube sheet is aluminium sheet, and on each tube sheet capillary wick is equipped with.
2. aluminium soaking plate in microchannel according to claim 1, it is characterised in that：The hook groove capillary structure has structure phase
Several same liquid-sucking core splits, are spaced between each liquid-sucking core split, liquid-sucking core split one tube sheet of correspondence, described
In liquid-sucking core split is enclosed in the corresponding tube sheet, the liquid-sucking core split is provided with for phase-change working substance transmission
Hook groove.
3. aluminium soaking plate in microchannel according to claim 2, it is characterised in that：The tube sheet is arranged on corresponding suction
The center of wick-containing split.
4. aluminium soaking plate in microchannel according to claim 3, it is characterised in that：The liquid-sucking core split is located at tube sheet both sides
The hook groove be symmetrical arranged centered on tube sheet.
5. aluminium soaking plate in microchannel according to claim 4, it is characterised in that：It is also interior in the hook groove to be provided with capillary wick
Core.
6. aluminium soaking plate in microchannel according to claim 5, it is characterised in that：The capillary wick is to be with wire
The imbibition wire netting or imbibition metal tape of base material braiding.
7. aluminium soaking plate in microchannel according to claim 5, it is characterised in that：The capillary wick for foaming copper powder,
Or foaming aluminium powder.
8. aluminium soaking plate in microchannel according to claim 5, it is characterised in that：The capillary wick is copper powder or aluminium
The capillary structure of powder sintering shaping.
9. the microchannel aluminium soaking plate according to claim 6 or 7 or 8, it is characterised in that：The phase-change working substance be acetone or
The oxidative ethane of person four.
10. aluminium soaking plate in microchannel according to claim 6, it is characterised in that：If carried interest aluminium wire mutually stranded formation institute
State imbibition metal tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710058273.5A CN106604621B (en) | 2017-01-23 | 2017-01-23 | Microchannel aluminium soaking plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710058273.5A CN106604621B (en) | 2017-01-23 | 2017-01-23 | Microchannel aluminium soaking plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106604621A true CN106604621A (en) | 2017-04-26 |
| CN106604621B CN106604621B (en) | 2019-04-09 |
Family
ID=58585538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710058273.5A Active CN106604621B (en) | 2017-01-23 | 2017-01-23 | Microchannel aluminium soaking plate |
Country Status (1)
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| CN (1) | CN106604621B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107062964A (en) * | 2017-05-09 | 2017-08-18 | 华南理工大学 | The preparation method of multichannel aluminium flat-plate heat pipe with fibre bundle liquid sucting core structure |
| CN109341393A (en) * | 2018-10-22 | 2019-02-15 | 华南理工大学 | The separate type microchannel aluminothermy pipe pipe and its manufacturing method of a variety of capillary wicks |
| CN109387107A (en) * | 2017-08-04 | 2019-02-26 | 深圳市迈安热控科技有限公司 | Porous heat pipe |
| CN112484544A (en) * | 2019-10-30 | 2021-03-12 | 株式会社Cgi | Non-directional soaking plate |
| CN113453494A (en) * | 2021-05-18 | 2021-09-28 | 江西展耀微电子有限公司 | Preparation method of vapor chamber, vapor chamber and electronic equipment |
| TWI814214B (en) * | 2022-01-18 | 2023-09-01 | 奕昌有限公司 | Heat sink |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107062964A (en) * | 2017-05-09 | 2017-08-18 | 华南理工大学 | The preparation method of multichannel aluminium flat-plate heat pipe with fibre bundle liquid sucting core structure |
| CN107062964B (en) * | 2017-05-09 | 2023-02-14 | 华南理工大学 | Preparation method of multi-channel aluminum flat plate heat pipe with fiber bundle liquid absorption core structure |
| CN109387107A (en) * | 2017-08-04 | 2019-02-26 | 深圳市迈安热控科技有限公司 | Porous heat pipe |
| CN109387107B (en) * | 2017-08-04 | 2024-05-17 | 深圳市迈安热控科技有限公司 | Porous heat pipe |
| CN109341393A (en) * | 2018-10-22 | 2019-02-15 | 华南理工大学 | The separate type microchannel aluminothermy pipe pipe and its manufacturing method of a variety of capillary wicks |
| CN109341393B (en) * | 2018-10-22 | 2023-11-21 | 华南理工大学 | Separated micro-channel aluminum heat pipe blank with multiple capillary liquid absorbing cores and manufacturing method thereof |
| CN112484544A (en) * | 2019-10-30 | 2021-03-12 | 株式会社Cgi | Non-directional soaking plate |
| CN113453494A (en) * | 2021-05-18 | 2021-09-28 | 江西展耀微电子有限公司 | Preparation method of vapor chamber, vapor chamber and electronic equipment |
| CN113453494B (en) * | 2021-05-18 | 2023-08-15 | 江西新菲新材料有限公司 | Vapor chamber preparation method, vapor chamber and electronic equipment |
| TWI814214B (en) * | 2022-01-18 | 2023-09-01 | 奕昌有限公司 | Heat sink |
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| CN106604621B (en) | 2019-04-09 |
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