CN104981135A - Electronic device heat radiator with arc-shaped cross section - Google Patents
Electronic device heat radiator with arc-shaped cross section Download PDFInfo
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- CN104981135A CN104981135A CN201510425638.4A CN201510425638A CN104981135A CN 104981135 A CN104981135 A CN 104981135A CN 201510425638 A CN201510425638 A CN 201510425638A CN 104981135 A CN104981135 A CN 104981135A
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- Prior art keywords
- fin
- circular arc
- radiator
- arc
- section
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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
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
Abstract
The present invention provides an electronic device heat radiator with an arc-shaped cross section. The heat radiator comprises a base body and pins at the t the periphery of the base body. The cross section of the base body is an arc shape. The fins comprise a first fin and second fins. The first fin extends outward from the center point of the arc shape and is perpendicular to the arc. The second fins comprise a plurality of fins which extend outward from the surface where the arc line of the arc shape is and a plurality of fins which extend outward from the first fin. The second fins which extend to the same direction are parallel to each other. An isosceles arc is formed by the extending end parts of the first fin and the second fins. The surface of the bottom side of the arc and the heat radiator of an electronic device are subjected to thermal contact. According to the electronic device heat radiator, the structure of the heat radiator is optimized, and the heat radiator structure is set according to the heat distribution rule to maximize heat radiation efficiency.
Description
Technical field
The invention belongs to radiator field, particularly relate to the radiator that a kind of dissipation from electronic devices uses, belong to F28F field.
Background technology
Along with the develop rapidly of electronic technology, the heating such as the central processing unit electronic device speed of service is more and more faster, the heat also corresponding increase produced when it runs, in order to these heats are distributed the normal operation ensureing electronic device, need to dispel the heat to electronic device, the quality of its heat radiation is directly connected to the life-span of computer and the quality of computing.Along with the dominant frequency of electronic device is more and more higher, caloric value is also increasing.If the amount of heat produced when electronic device can not be worked exhales in time, just have a strong impact on its service behaviour.Therefore, prevent an overheated great difficult problem with having dispelled the heat into Computer Design, radiator have also been obtained significant concern as the main devices of electronic device cooling.
Electronic-device radiator the most frequently used at present mainly contains two classes from principle, and one is adopt liquid radiating, and comprise water-cooled, oil cooling etc., this mode cost is high, and liquid is easily revealed, and there is potential safety hazard; In addition, also more complicated is installed and used.What another kind was the most frequently used is exactly wind-cooling heat dissipating mode, and air-cooled radiator is generally divided into fin and fan two part, and fin directly contacts with CPU, and it is responsible for the heat of CPU to draw, and fan then makes air flow, and is taken away by heat on CPU.At present, for improving the radiating efficiency of radiator, common way improves rotation speed of the fan, and another kind is exactly the area of dissipation strengthening radiator.But the radiator adopted at present, on whole dissipation from electronic devices face, the thickness of radiator is all identical, and therefore heat-sinking capability is also all identical.But in fact electronic device is in radiation processes, it is maximum that central point generally dispels the heat, and periphery heat radiation is relatively few.And adopt the mode that heat sink thickness is all identical at present, integrated radiator is dispelled the heat on the whole uneven, such as, central area needs heat radiation many, and periphery needs heat radiation few, can cause non-uniform temperature on radiator integral, namely affect heat radiation, also affect the useful life of radiator.。
Summary of the invention
The present invention, in order to overcome deficiency of the prior art, provides a kind of electronic-device radiator, and structure of the present invention is simple, and good heat dissipation effect, is widely used in the cooling of electronic device, has practical feature reliably.
The present invention is achieved through the following technical solutions:
A kind of electronic-device radiator of circular section, described radiator comprises matrix and is positioned at the fin of matrix periphery, it is characterized in that, the cross section of described matrix is circular arc, described fin comprises the first fin and the second fin, described first fin stretches out from circular arc line middle point vertical in circular arc, described second fin comprises multiple fin of stretching from the facing epitaxy at the camber line place of circular arc and from the outward extending multiple fin of the first fin, the second fin extended to same direction is parallel to each other, described first fin, the end that second fin extends forms isosceles circular arc, the face at the place, base of described circular arc and the radiator of electronic device carry out thermo-contact.
As preferably, described second fin is relative to the face specular at the first fin center line place, and the distance of described the second adjacent fin is L1, and the base length of described circular arc is W, the length of the waist of described isosceles circular arc is D, and the relation of above-mentioned three meets following formula:
L1/W=A*ln (2*D/W)+B, wherein ln is logarithmic function, and A, B are coefficient,
0.09<A<0.11,0.07<B<0.1，
6mm<W<8mm,
0.6mm<L1<1.35mm,
4.5mm<D<6.5mm;
0.1<L1/W<0.16,
0.6<D/W<1.0
The drift angle that the line at the mid point of circular arc and the two ends of circular arc is formed is a, 125 ° of <a<170 °.
As preferably, matrix is identical with the length of fin, is L, 0.04<L1/L<0.27,5mm<L<15mm.
As preferably, A=0.10, B=0.08.
Compared with prior art, radiating appliance of the present invention has following advantage:
1) the invention provides a kind of new radiator, the cross section of radiator is circular arc, make the area of dissipation of radiator maximum at middle part with heat radiation volume like this, minimum in both sides, make middle part heat radiation maximum, meet the regularity of distribution of electronic device heat like this, make radiator heat-dissipation on the whole even.
2) radiator cross section is circular arc, and make radiating surface gathering way of volume of dispelling the heat from two ends to middle part slack-off gradually, this also distributes corresponding with heat, makes more to be applicable to Homogeneouslly-radiating.
3) avoid the distribution of radiator amount of localized heat too much, cause radiator local temperature too high, ensure that the life-span of radiator.
4) the present invention is by test of many times, obtains an optimum radiator optimum results, and is verified by test, thus demonstrate the accuracy of result.
5) radiator outer setting radiating fin, multiple radiating fin is worked in coordination, and radiating fin forms circular arc, improves the radiating efficiency of radiator.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram of an embodiment;
Fig. 2 is the main TV structure schematic diagram of an embodiment;
Fig. 3 is the schematic diagram that the right side of Fig. 1 is observed.
Reference numeral is as follows:
1. matrix, 2. radiator, 3. the first fin, 4 second fins, 5 second fins.
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
Herein, if do not have specified otherwise, relate to formula, "/" represents division, "×", " * " represent multiplication.
As Fig. 1, shown in 2, a kind of electronic-device radiator, described radiator comprises matrix 1 and is positioned at the fin 3-5 of matrix periphery, as Fig. 1, shown in 2, the cross section of described matrix is circular arc, described fin comprises the first fin 3 and the second fin 4, 5, described first fin 3 is outward extending in circular arc from circular arc line middle point vertical, described second fin 4, 5 comprise multiple fins 4 of stretching from the facing epitaxy at the camber line place of circular arc and from the outward extending multiple fin 5 of the first fin, the second fin 4 extended to same direction, 5 is parallel to each other, such as, as shown in the figure, outward extending second fin 4 from the circular arc left side, 5 is parallel to each other, outward extending second fin 4 on the right of circular arc, 5 is parallel to each other, described first fin 3, second fin 4, 5 ends extended form isosceles circular arc, as shown in Figure 1, the length of the waist of isosceles circular arc is D, the face at the place, base of described circular arc and the radiator 2 of electronic device carry out thermo-contact.
Because found by test, electronic device in middle part heat radiation at most, from middle part to surrounding, heat radiation diminishes gradually, therefore be circular arc by arranging the cross section of radiator, make the area of dissipation of radiator maximum at middle part with heat radiation volume like this, minimum in both sides, make middle part heat-sinking capability maximum, meet the regularity of distribution of electronic device heat like this, make radiator heat-dissipation on the whole even, avoid radiator local temperature overheated, thus avoid radiator local temperature overheated, cause radiating effect excessively poor, cause the shortening in electronic device life-span.
As preferably, described second fin 4,5 relative to the face specular at the first fin 3 center line place, namely relative to the face specular at the line place of the mid point of circular arc and the mid point at place, base.
As preferably, the second fin extends perpendicular to two waists of isosceles circular arc.
When the length of the angle a that the line of the mid point of circular arc and the end points of arc is formed and arc is certain, first fin 3 and the second fin 4, 5 is longer, then heat transfer effect is better in theory, find in process of the test, when the first fin and the second fin reach certain length time, then heat transfer effect just increases very not obvious, main because along with the first fin and the increase of the second finned length, also more and more lower in the temperature of flight tip, along with temperature is reduced to a certain degree, heat transfer effect then can be caused not obvious, also add the cost of material on the contrary and considerably increase the space occupied of radiator, simultaneously, in heat transfer process, if the spacing between the second fin is too little, also the deterioration of heat transfer effect is easily caused, because along with the increase of radiator length, boundary layer is thickening, boundary layer between adjacent fins is caused to overlap mutually, worsen heat transfer, spacing between too low or the second fin of radiator normal manner causes too greatly heat exchange area to reduce, have impact on the transmission of heat, therefore in the distance of the second adjacent fin, the length of side of isosceles circular arc, an optimized size relationship is met between the length of the first fin and the second fin and heat sink length.
Therefore, the present invention is the dimensionally-optimised relation of the radiator of the best summed up by thousands of test datas of the radiator of multiple different size.
The distance of described the second adjacent fin is L1, and the base length of described circular arc is W, and the length of the waist of described isosceles circular arc is D, and the relation of above-mentioned three meets following formula:
L1/W=A*ln (2*D/W)+B, wherein ln is logarithmic function, and A, B are coefficient,
0.09<A<0.11,0.07<B<0.1，
6mm<W<8mm,
0.6mm<L1<1.35mm,
4.5mm<D<6.5mm;
0.1<L1/W<0.16,
0.6<D/W<1.0
The drift angle that the line at the mid point of circular arc and the two ends of circular arc is formed is a, 125 ° of <a<170 °.
As preferably, matrix is identical with the length of fin, is L, 0.04<L1/L<0.27,5mm<L<15mm.
As preferably, A=0.10, B=0.08
It should be noted that, the distance L1 of adjacent pair fin is the distance counted from the center of secondary fin, as shown in Figure 1.
By testing after result of calculation, by the numerical value of computation bound and median, the result of gained matches with formula substantially, and error is substantially within 3.1%, and maximum relative error is no more than 4.4%, and mean error is 1.71% again.
Preferably, the distance of described the second adjacent fin is identical.
As preferably, the width of the first fin is greater than the width of the second fin.
Preferably, the width of the first fin is b1, and the width of the second fin is b2, wherein 1.5*b2<b4<2.4*b2;
Width b1, b2 herein refer to the mean breadth of fin.
Preferably, change according to certain rule for the distance between the second fin, concrete rule is from the end points of circular arc to mid point, distance between the second fin 4 that circular arc extends is more and more less, end from the mid point of circular arc to the first fin 3, the distance between the second fin 5 that the first fin 3 extends is increasing.Main cause is the second fin arranged in arc portion, and heat dissipation capacity increases from the end of arc gradually to centre, and therefore need the quantity increasing fin, the spacing therefore by reducing fin increases the quantity of fin.In like manner, along the first fin 3, from mid point to end, the quantity of heat radiation is fewer and feweri, therefore reduces the quantity of fin accordingly.By setting like this, radiating efficiency can be improved greatly, save material greatly simultaneously.
As preferably, from the end points of arc to mid point, the amplitude reduced from the distance between the second fin 4 that the arc of arc shape extends is more and more less, the end from the mid point of arc to the first fin 3, and the amplitude that the distance between the second fin 5 that the first fin 3 extends increases is increasing.Found through experiments, by above-mentioned setting, with increase or minimizing amplitude identical compared with, the radiating effect of about 15% can be improved.Therefore there is good radiating effect.
Preferably, change according to certain rule for the width b2 between the second fin, concrete rule is from the end of arc to mid point, increasing from the width of the second fin 4 of arc extension, end from the mid point of arc to the first fin 3, the second fin 5 width extended from the first fin 3 is more and more less.Main cause is the second fin arranged in arc portion, and heat dissipation capacity increases gradually from base angle to drift angle, and therefore need the area increasing heat radiation, the width therefore by increasing fin increases the area of dissipation of fin.In like manner, along the first fin 3, from bottom to end, the quantity of heat radiation is fewer and feweri, therefore reduces the area of fin accordingly.By setting like this, radiating efficiency can be improved greatly, save material greatly simultaneously.
As preferably, from the end of arc to mid point, the amplitude increased from the second fin 4 width of the both sides arc extension of arc is increasing, the end from the mid point of arc to the first fin 3, and the amplitude reduced from the second fin 5 width of the first fin 3 extension is more and more less.Found through experiments, by above-mentioned setting, with increase or minimizing amplitude identical compared with, the radiating effect of about 16% can be improved.Therefore there is good radiating effect.
As preferably, although the width of the second fin or distance change, preferably, still meet the regulation of above-mentioned optimum formula.
Although the present invention discloses as above with preferred embodiment, the present invention is not defined in this.Any those skilled in the art, without departing from the spirit and scope of the present invention, all can make various changes or modifications, and therefore protection scope of the present invention should be as the criterion with claim limited range.
Claims (4)
1. the electronic-device radiator of a circular section, described radiator comprises matrix and is positioned at the fin of matrix periphery, it is characterized in that, the cross section of described matrix is circular arc, described fin comprises the first fin and the second fin, described first fin stretches out from circular arc middle point vertical in circular arc, described second fin comprises multiple fin of stretching from the facing epitaxy at the camber line place of circular arc and from the outward extending multiple fin of the first fin, the second fin extended to same direction is parallel to each other, described first fin, the end that second fin extends forms isosceles circular arc, the face at the place, base of described circular arc and the radiator of electronic device carry out thermo-contact.
2. the electronic-device radiator of circular section as claimed in claim 1, it is characterized in that, described second fin is relative to the face specular at the first fin center line place, the distance of adjacent the second described fin is L1, the base length of described circular arc is W, the length of the waist of described isosceles circular arc is D, meets following formula:
L1/W=A*ln (2*D/W)+B, wherein ln is logarithmic function, and A, B are coefficient,
0.09<A<0.11,0.07<B<0.1，
6mm<W<8mm,
0.6mm<L1<1.35mm,
4.5mm<D<6.5mm;
0.1<L1/W<0.16,
0.6<D/W<1.0,
The drift angle that the line of the mid point of circular arc and the two-end-point of circular arc is formed is a, 125 ° of <a<170 °.
3. the electronic-device radiator of circular section as claimed in claim 2, it is characterized in that, matrix is identical with the length of fin, is L, 0.04<L1/L<0.27,5mm<L<15mm.
4. the electronic-device radiator of circular section as claimed in claim 2, is characterized in that A=0.10, B=0.08.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710735877.9A CN107396614B (en) | 2015-07-20 | 2015-07-20 | A kind of electronic component radiator of the circular section of fin width rule variation |
| CN201710735876.4A CN107396613B (en) | 2015-07-20 | 2015-07-20 | A kind of electronic component radiator of the circular section of fin distance rule variation |
| CN201510425638.4A CN104981135B (en) | 2015-07-20 | 2015-07-20 | A kind of electronic-device radiator of circular section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510425638.4A CN104981135B (en) | 2015-07-20 | 2015-07-20 | A kind of electronic-device radiator of circular section |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710735876.4A Division CN107396613B (en) | 2015-07-20 | 2015-07-20 | A kind of electronic component radiator of the circular section of fin distance rule variation |
| CN201710735877.9A Division CN107396614B (en) | 2015-07-20 | 2015-07-20 | A kind of electronic component radiator of the circular section of fin width rule variation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104981135A true CN104981135A (en) | 2015-10-14 |
| CN104981135B CN104981135B (en) | 2017-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710735876.4A Active CN107396613B (en) | 2015-07-20 | 2015-07-20 | A kind of electronic component radiator of the circular section of fin distance rule variation |
| CN201710735877.9A Active CN107396614B (en) | 2015-07-20 | 2015-07-20 | A kind of electronic component radiator of the circular section of fin width rule variation |
| CN201510425638.4A Active CN104981135B (en) | 2015-07-20 | 2015-07-20 | A kind of electronic-device radiator of circular section |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710735876.4A Active CN107396613B (en) | 2015-07-20 | 2015-07-20 | A kind of electronic component radiator of the circular section of fin distance rule variation |
| CN201710735877.9A Active CN107396614B (en) | 2015-07-20 | 2015-07-20 | A kind of electronic component radiator of the circular section of fin width rule variation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387505A (en) * | 2015-10-22 | 2016-03-09 | 中北大学 | Boiler heat supply system |
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| US6959755B2 (en) * | 2002-01-30 | 2005-11-01 | Kuo Jui Chen | Tube-style radiator structure for computer |
| CN2857219Y (en) * | 2005-11-30 | 2007-01-10 | 佛山市顺德区富信家电配件制造有限公司 | Radiator with improved structure |
| CN200997745Y (en) * | 2007-01-15 | 2007-12-26 | 曜越科技股份有限公司 | Fan-shaped radiater |
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| EP0285277A1 (en) * | 1987-03-31 | 1988-10-05 | Amp Incorporated | Chip carrier with energy storage means |
| US5748445A (en) * | 1996-08-27 | 1998-05-05 | General Resources Corporation | Heat sink and circuit enclosure for high power electronic circuits |
| TW200846596A (en) * | 2007-05-31 | 2008-12-01 | gui-fang Chen | Illumination device |
| JP2012227445A (en) * | 2011-04-21 | 2012-11-15 | Renesas Electronics Corp | Semiconductor device and method of manufacturing the same |
| CN202306430U (en) * | 2011-10-12 | 2012-07-04 | 联想(北京)有限公司 | Computer radiating device and computer |
| CN203549734U (en) * | 2013-09-13 | 2014-04-16 | 广东工业大学 | Optimized radiating structure of LED street lamp |
| CN103968680B (en) * | 2014-05-19 | 2015-02-25 | 山东大学 | Column-shaped radiator changeable in fin taper |
| CN204335265U (en) * | 2015-01-06 | 2015-05-13 | 河北冠泰电子技术有限公司 | Electronic radiation module and cartridge type electronic heat sink |
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2015
- 2015-07-20 CN CN201710735876.4A patent/CN107396613B/en active Active
- 2015-07-20 CN CN201710735877.9A patent/CN107396614B/en active Active
- 2015-07-20 CN CN201510425638.4A patent/CN104981135B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6959755B2 (en) * | 2002-01-30 | 2005-11-01 | Kuo Jui Chen | Tube-style radiator structure for computer |
| CN2857219Y (en) * | 2005-11-30 | 2007-01-10 | 佛山市顺德区富信家电配件制造有限公司 | Radiator with improved structure |
| CN200997745Y (en) * | 2007-01-15 | 2007-12-26 | 曜越科技股份有限公司 | Fan-shaped radiater |
| CN203289803U (en) * | 2013-04-24 | 2013-11-13 | 镇江华泰铝业股份有限公司 | Fan-shaped radiator aluminum profile |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387505A (en) * | 2015-10-22 | 2016-03-09 | 中北大学 | Boiler heat supply system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107396613B (en) | 2019-02-26 |
| CN107396613A (en) | 2017-11-24 |
| CN107396614B (en) | 2019-07-26 |
| CN107396614A (en) | 2017-11-24 |
| CN104981135B (en) | 2017-10-20 |
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