CN102238848A - Heat dissipation device and airflow generator thereof - Google Patents
Heat dissipation device and airflow generator thereof Download PDFInfo
- Publication number
- CN102238848A CN102238848A CN2010101578307A CN201010157830A CN102238848A CN 102238848 A CN102238848 A CN 102238848A CN 2010101578307 A CN2010101578307 A CN 2010101578307A CN 201010157830 A CN201010157830 A CN 201010157830A CN 102238848 A CN102238848 A CN 102238848A
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- air
- radiator
- gas flow
- vibrating diaphragm
- flow generator
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 38
- 229910052742 iron Inorganic materials 0.000 claims description 19
- 239000011148 porous material Substances 0.000 claims description 17
- 230000000694 effects Effects 0.000 claims description 9
- 238000010521 absorption reaction Methods 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 230000017525 heat dissipation Effects 0.000 abstract 1
- 238000005507 spraying Methods 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 11
- 230000033001 locomotion Effects 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 201000009310 astigmatism Diseases 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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Abstract
The invention relates to a heat dissipation device, which comprises a radiator and an airflow generator arranged on the radiator. The airflow generator comprises a shell and a plurality of airflow generation units arranged in the shell, wherein each airflow generation unit comprises a box body, a vibrating film and a driving piece; the vibrating film is arranged in the box body and divides the inner space of the box body into a first cavity and a second cavity; the second cavity is communicated with the outside by an air hole; the vibrating film compresses air in the second cavity under the action of the driving piece and generates air flow spraying to the radiator through the air hole.
Description
Technical field
The present invention relates to a kind of heat abstractor, relate in particular to a kind of heat abstractor that electronic installation dispels the heat to heat-generating electronic elements and gas flow generator that is adopted thereof of being used for.
Background technology
For example in the computer, often adopt a heat abstractor that the electronic component such as the CPU of its inside are dispelled the heat at electronic installation.This heat abstractor comprises to be located at the radiator on the electronic component and to be located at a radiator fan on the radiator, and this radiator has some fin, and the radiator fan running produces air-flow and also blows to fin, takes away with the heat that will reach fin.
Yet, when radiator fan turns round with higher speed, be easy to generate noise and might cause running unstable.In addition, in the radiator fan, for reaching certain air quantity, motor must possess corresponding size, thereby can't satisfy the requirement that electronic installation develops towards lightening direction.
Summary of the invention
In view of this, be necessary to provide a kind of gas flow generator that is fit to carry out miniaturized design and has better quiet effect, and a kind of heat abstractor that uses this gas flow generator is provided.
A kind of gas flow generator, comprise a housing and be located at the interior some air-flow generation units of this housing, wherein each air-flow generation unit comprises a casing, a vibrating diaphragm and an actuator, this vibrating diaphragm is located in this casing and the inner space of this casing is separated into one first chamber and one second chamber, this second chamber is in communication with the outside by a pore, and the gas of this vibrating diaphragm in effect lower compression second chamber of this actuator also produces an air-flow that is outwards sprayed by this pore.
A kind of heat abstractor comprises a radiator and is located at a gas flow generator on this radiator.This gas flow generator comprises a housing and is located at the interior some air-flow generation units of this housing, wherein each air-flow generation unit comprises a casing, a vibrating diaphragm and an actuator, this vibrating diaphragm is located in this casing and the inner space of this casing is separated into one first chamber and one second chamber, this second chamber is in communication with the outside by a pore, and the gas of this vibrating diaphragm in effect lower compression second chamber of this actuator also produces an air-flow that is sprayed to radiator by this pore.
In the gas flow generator of above-mentioned heat abstractor, drive the vibrating diaphragm motion by actuator and produce air-flow, need not the astigmatism Hot-air fan parts such as motor, rotor equally are set, therefore have quiet preferably effect.This air-flow generation unit is simple in structure, is fit to carry out the slimming design.
Description of drawings
With reference to the accompanying drawings, in conjunction with the embodiments the present invention is further described.
Fig. 1 is a preferred embodiment assembly drawing of heat abstractor of the present invention.
Fig. 2 is the three-dimensional exploded view of heat abstractor shown in Figure 1.
Fig. 3 is the three-dimensional exploded view of the gas flow generator in the heat abstractor shown in Figure 2.
Fig. 4 is the inverted view of Fig. 3.
Fig. 5 is the cutaway view of heat abstractor shown in Figure 1 along the V-V line.
Fig. 6 is for showing a schematic diagram of the heat abstractor course of work shown in Figure 1.
Fig. 7 is for showing the another schematic diagram of the heat abstractor course of work shown in Figure 1.
Fig. 8 is for showing a schematic diagram again of the heat abstractor course of work shown in Figure 1.
Fig. 9 is the cutaway view of another embodiment of the gas flow generator of heat abstractor of the present invention.
The main element symbol description
Heat abstractor 100,100a
Heat absorption base plate 11
Installing hole 15
Air-flow generation unit 40,40a
Through hole 324
Closure 101
Vibrating diaphragm 42
Dotted line A, B
First air-flow 102
Second air-flow 103
Arrow 104
Embodiment
As a Fig. 1 and a preferred embodiment that Figure 2 shows that heat abstractor 100 of the present invention.This heat abstractor 100 comprises a radiator 10 and is located at a gas flow generator 20 on this radiator 10.
This radiator 10 comprises a heat absorption base plate 11 and is arranged at some fin 12 on this heat absorption base plate 11.This heat absorption base plate 11 is used for contacting to absorb heat as an electronic component with a thermal source.These fin 12 are arranged in parallel, and the gas channel 13 that forms between adjacent two fin 12.The position at four angles of radiator 10 has an installation portion 14 respectively, and each installation portion 14 is provided with an installing hole 15.
See also Fig. 3 and Fig. 4, this gas flow generator 20 comprises a housing 30 and is located at some air-flow generation units 40 in this housing 30.This housing 30 comprises a base 31 and is covered on a loam cake 32 on this base 31.This loam cake 32 has a top board 321 and reaches by the downward sidewall 322 that extends of the periphery of this top board 321.The position at four angles of this loam cake 32 has an installation portion 323 respectively, and each installation portion 323 is provided with a through hole 324.In addition, the position of the corresponding through hole 324 of the downside of each installation portion 323 of loam cake 32 is provided with a support component 325 as a boss.When gas flow generator 20 is installed on the radiator 10, these support component 325 correspondences are located on the installation portion 14 of radiator 10, and make through hole 324 on the housing 30 aim at the installing hole 15 of radiator 10 respectively, pass the through hole 324 on the housing 30 respectively as screw rod and engage by four closures 101, thereby gas flow generator 20 and radiator 10 are fixed together with the installing hole 15 of radiator 10.Owing to be provided with support component 325 between radiator 10 and the gas flow generator 20, thereby between radiator 10 and gas flow generator 20, form one at interval.
See also Fig. 5, these air-flow generation units 40 all are contained in by this base 31 and loam cake 32 and surround in the receiving space that forms, and are array distribution.Each air-flow generation unit 40 comprise a rectangle casing 41, be located at vibrating diaphragms 42 in this casing 41 and be located at a actuator 43 on this vibrating diaphragm 42.This casing 41 has down an opening 44 (shown in Figure 4).The base 31 of housing 30 is attached at the bottom of these air-flow generation units 40, and is provided with the pore 311 of a circle on this base 31 in the position of the actuator 43 of corresponding each air-flow generation unit 40.
This vibrating diaphragm 42 is and is horizontally placed in the casing 41, and the spatial separation in the casing 41 are become one first chamber 411 and one second chamber 412.This first chamber 411 and second chamber 412 lay respectively at the upper and lower both sides of vibrating diaphragm 42, and this second chamber 412 is in communication with the outside by this pore 311.This actuator 43 is located on this vibrating diaphragm 42 and is positioned at the centre position of vibrating diaphragm 42.This actuator 43 can produce periodic motion, thereby drives this vibrating diaphragm 42 upper and lower vibrations.In the present embodiment, this actuator 43 is a piezoelectric patches (following equally with 43 signs), and this piezoelectric patches 43 can combine with vibrating diaphragm 42 by bonding mode.Described piezoelectric patches 43 is to be made by the material with piezoelectric effect, as pottery, polymer or composite material etc.This piezoelectric patches 43 can produce flexural deformation alternately at its thickness direction under the driving of alternating voltage, produce upper and lower vibration thereby drive vibrating diaphragm 421.
During these gas flow generator 20 work, apply alternating voltage by piezoelectric patches 43 (being actuator) to each air-flow generation unit 40, make piezoelectric patches 43 produce flexural deformation alternately at its thickness direction, and drive in these vibrating diaphragm 42 generations periodically, following vibration, thereby repeatedly the gas in second chamber 412 of casing 41 is compressed, produce the high velocity air that sprays to radiator 10 with pore 311 places at base 31, this high velocity air enters fast in the gas channel 13 of radiator 10 and with fin 12 and carries out heat exchange, thereby the heat that will reach fin 12 is taken away.
See also Fig. 6-8, specify the production process of air-flow below with period of motion of single air-flow generation unit 40.
The production process of air-flow can be divided into three phases.In the phase I, the piezoelectric patches 43 of this air-flow generation unit 40 is applied a positive voltage (or negative voltage), this piezoelectric patches 43 is produced be bent downwardly distortion, and drive vibrating diaphragms 42 by this piezoelectric patches 43 and be bent downwardly to compress second chamber 412.As shown in Figure 6, this vibrating diaphragm 42 is moved among the figure shown in the dotted line A in the process of position by original horizontal position, gas in second chamber 412 is compressed and moves to pore 311, thereby form one first air-flow 102 that is flowed to radiator 10 by pore 311, this first air-flow 102 travels forward and carries out heat exchange with fin 12 and take away with the heat that will reach fin 12 along the gas channel 13 between the fin 12.
In second stage, piezoelectric patches 43 to this air-flow generation unit 40 applies an opposite voltage, this piezoelectric patches 43 is produced be bent upwards distortion, under the driving action of this piezoelectric patches 43, this vibrating diaphragm 42 is back to horizontal level shown in Figure 7 by the motion of position shown in Fig. 6 dotted line A.In this process, the gas channel 13 first interior air-flows 102 that enter radiator 10 move forward, simultaneously, air between the gap of gas flow generator 20 and radiator 10 is in the gas channel 13 that is sucked into radiator 10 near the position of pore 311 and form one second air-flow 103, and the flow of this second air-flow 103 can be up to ten times of first air-flow 102.
In the phase III, this vibrating diaphragm 42 continues to be bent upwards distortion, and moves to the position shown in the dotted line B among Fig. 8 by horizontal level shown in Figure 7.In this process, the volume of first chamber 411 is compressed, the volume of second chamber 412 is then expanded, air between the gap of gas flow generator 20 and radiator 10 is (shown in arrow among Fig. 8 104) in pore 311 is sucked into second chamber 412, for using in next period of motion, gas channel 13 103 interior in second air-flows that enter radiator 10 move forward, and promote first air-flow 102 and travel forward, this first air-flow 102 near heat absorption base plate 11 places of radiator 10 to two side flow.
In this air-flow generation unit 40, drive vibrating diaphragm 42 by piezoelectric patches 43 and carry out above-mentioned cycle movement repeatedly, thereby produce the air-flow that blows to radiator 10 continuously, so that the heat on the radiator 10 is taken away.In addition, by to applying the alternating voltage of different cycles on the piezoelectric patches 43, the flow size of the air-flow that may command produced is so that air-flow is utilized fully.
In this heat abstractor 100, provide air-flow to brush radiator 10 to take away the heat of radiator 10 by gas flow generator 20.The quantity of the air-flow generation unit 40 in this gas flow generator 20 can be selected as requested.Need not the astigmatism Hot-air fan in this air-flow generation unit 40 parts such as motor, rotor equally are set, therefore have quiet preferably effect.This air-flow generation unit 40 is simple in structure, is fit to carry out the slimming design.
In this heat abstractor 100, gas flow generator 20 the actuator 43 of air-flow generation unit 40 be piezoelectric patches, this actuator 43 can also be other elements.
Be illustrated in figure 9 as another embodiment of heat abstractor 100a of the present invention, this heat abstractor 100a also comprises radiator 10 and gas flow generator 20a, and the difference of the gas flow generator 20 among this gas flow generator 20a and the last embodiment only is that the employed actuator 43a of air-flow generation unit 40a is different.In the present embodiment, set actuator 43a comprises a soft iron 431, is surrounded on this soft iron 431 coil 432 and magnet 433 on every side on the vibrating diaphragm 42 of each air-flow generation unit 40a, and this coil 432 can directly be wound on this soft iron 431 or be located on this vibrating diaphragm 42.The coil 432 of these air-flow generation units 40 is connected in series mutually and links to each other with the control circuit of outside.This magnet 433 is positioned at first chamber 411, and this magnet 433 is located on the casing 41 and is with this soft iron 431 and is oppositely arranged.The position relation of the element of this actuator 43a also can be exchanged, and is about to magnet 433 and is located on the vibrating diaphragm 42, and soft iron 431 and coil 432 are located on this casing 41.
This gas flow generator 20a when work, feed alternating currents by coil 432, so that soft iron 431 is magnetized to the actuator 43a of each air-flow generation unit 40a.When in coil 432, feeding a forward current, soft iron 431 be magnetized and its polarity opposite with the polarity of magnet 433, this moment soft iron 431 with repel mutually with magnet 433, because magnet 433 is fixed on the casing 41, soft iron 431 away from magnet 433 motions, moves downward thereby drive vibrating diaphragm 42 under the effect of repulsive force.On the contrary, when in coil 432, feeding a reverse current, soft iron 431 be magnetized and its polarity identical with the polarity of magnet 433, this moment soft iron 431 and attracting each other with magnet 433, soft iron 431 towards magnet 433 motions, moves upward thereby drive vibrating diaphragm 42 under the effect of suction.The air-flow production process of each air-flow generation unit 40a in a period of motion in the present embodiment is identical with the production process shown in Fig. 6-8.In addition, by the alternating current to feeding different cycles in the coil 432, the Oscillation Amplitude of may command vibrating diaphragm 42, thereby the flow size of the air-flow that control is produced are so that air-flow is utilized fully.
In addition, those skilled in the art also can do other variation in spirit of the present invention, and certainly, the variation that these are done according to spirit of the present invention all should be included within the present invention's scope required for protection.
Claims (10)
1. gas flow generator, comprise a housing and be located at the interior some air-flow generation units of this housing, it is characterized in that: each air-flow generation unit comprises a casing, a vibrating diaphragm and an actuator, this vibrating diaphragm is located in this casing and the inner space of this casing is separated into one first chamber and one second chamber, this second chamber is in communication with the outside by a pore, and the gas of this vibrating diaphragm in effect lower compression second chamber of this actuator also produces an air-flow that is outwards sprayed by this pore.
2. gas flow generator as claimed in claim 1 is characterized in that: this actuator is a piezoelectric patches of being located on the vibrating diaphragm.
3. gas flow generator as claimed in claim 1, it is characterized in that: this actuator comprises a soft iron, be surrounded on a coil around this soft iron, an and magnet, this soft iron is located at vibrating diaphragm or casing on one of them, and this magnet is located at vibrating diaphragm that this soft iron is not set or casing on one of them relatively.
4. gas flow generator as claimed in claim 3 is characterized in that: this soft iron is located at this vibrating diaphragm, and this magnet is located on this casing.
5. gas flow generator as claimed in claim 4 is characterized in that: this coil is wound on this soft iron or is located on this vibrating diaphragm.
6. gas flow generator as claimed in claim 1, it is characterized in that: this housing comprises a base and is covered on a loam cake on this base, these air-flow generation units are located between this base and the loam cake, and each air-flow generation unit is provided with an opening towards base, and described pore is located on this base.
7. gas flow generator as claimed in claim 1 is characterized in that: these air-flow generation units are array distribution.
8. a heat abstractor comprises a radiator, and base is characterised in that: this heat abstractor comprises that also this gas flow generator is located on this radiator as any described gas flow generator among the claim 1-7, and described pore is relative with radiator.
9. heat abstractor as claimed in claim 8 is characterized in that: this radiator comprises a heat absorption base plate and is located at some fin on this heat absorption base plate, formation one gas channel between adjacent two fin, and described pore is relative with gas channel.
10. heat abstractor as claimed in claim 8 is characterized in that: form one between this gas flow generator and the radiator at interval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101578307A CN102238848A (en) | 2010-04-27 | 2010-04-27 | Heat dissipation device and airflow generator thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101578307A CN102238848A (en) | 2010-04-27 | 2010-04-27 | Heat dissipation device and airflow generator thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102238848A true CN102238848A (en) | 2011-11-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101578307A Pending CN102238848A (en) | 2010-04-27 | 2010-04-27 | Heat dissipation device and airflow generator thereof |
Country Status (1)
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| CN (1) | CN102238848A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103153023A (en) * | 2012-10-14 | 2013-06-12 | 中国计量学院 | Pulse jet flow finned cooling device |
| CN104717873A (en) * | 2013-12-11 | 2015-06-17 | 纬创资通股份有限公司 | Heat sink device |
| CN105101736A (en) * | 2014-05-12 | 2015-11-25 | 联想(北京)有限公司 | Air-flow acceleration apparatus and electronic device |
| CN105159424A (en) * | 2015-09-11 | 2015-12-16 | 小米科技有限责任公司 | Cooling structure, cooling method and device, and mobile device |
| CN105404368A (en) * | 2014-08-27 | 2016-03-16 | 联想(北京)有限公司 | Electronic equipment |
| CN106663665A (en) * | 2014-09-09 | 2017-05-10 | 陶瓷技术有限责任公司 | Multilayer cooler |
| US9803655B2 (en) | 2014-05-12 | 2017-10-31 | Beijing Lenovo Software Ltd. | Airflow accelerating device and electronic apparatus |
| CN107437924A (en) * | 2017-09-21 | 2017-12-05 | 朱小菊 | Photovoltaic board device |
| CN111356325A (en) * | 2018-12-20 | 2020-06-30 | 中车唐山机车车辆有限公司 | Power box |
| CN112367824A (en) * | 2020-09-09 | 2021-02-12 | 宁波晨岚电气设备有限公司 | Electric energy metering box |
| CN113597193A (en) * | 2020-04-30 | 2021-11-02 | 维沃移动通信有限公司 | Airflow generating device, heat radiating device and electronic equipment |
| CN116158201A (en) * | 2020-08-24 | 2023-05-23 | 辉达公司 | Smart Adaptive Heat Sinks for Cooling Data Center Equipment |
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| US20040190305A1 (en) * | 2003-03-31 | 2004-09-30 | General Electric Company | LED light with active cooling |
| CN1892028A (en) * | 2003-09-12 | 2007-01-10 | 清华大学 | Dual piezoelectric beam driven diaphram air pump |
| US20090262500A1 (en) * | 2005-04-28 | 2009-10-22 | Sony Corporation | Cooling device, heat sink, and electronic apparatus |
| CN1793647A (en) * | 2005-06-04 | 2006-06-28 | 胡军 | Prezoelectric ceramics sheet for mfg. mini-pump and mini air pump |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103153023A (en) * | 2012-10-14 | 2013-06-12 | 中国计量学院 | Pulse jet flow finned cooling device |
| CN104717873A (en) * | 2013-12-11 | 2015-06-17 | 纬创资通股份有限公司 | Heat sink device |
| CN105101736A (en) * | 2014-05-12 | 2015-11-25 | 联想(北京)有限公司 | Air-flow acceleration apparatus and electronic device |
| US9803655B2 (en) | 2014-05-12 | 2017-10-31 | Beijing Lenovo Software Ltd. | Airflow accelerating device and electronic apparatus |
| DE102015104357B4 (en) | 2014-05-12 | 2021-11-11 | Beijing Lenovo Software Ltd. | Airflow acceleration device and electronic device |
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| CN105404368A (en) * | 2014-08-27 | 2016-03-16 | 联想(北京)有限公司 | Electronic equipment |
| CN106663665B (en) * | 2014-09-09 | 2019-09-03 | 陶瓷技术有限责任公司 | Multilayer cooling device |
| CN106663665A (en) * | 2014-09-09 | 2017-05-10 | 陶瓷技术有限责任公司 | Multilayer cooler |
| CN105159424A (en) * | 2015-09-11 | 2015-12-16 | 小米科技有限责任公司 | Cooling structure, cooling method and device, and mobile device |
| CN107437924B (en) * | 2017-09-21 | 2019-05-17 | 河源市龙鑫光学科技有限公司 | Photovoltaic board device |
| CN107437924A (en) * | 2017-09-21 | 2017-12-05 | 朱小菊 | Photovoltaic board device |
| CN111356325A (en) * | 2018-12-20 | 2020-06-30 | 中车唐山机车车辆有限公司 | Power box |
| CN113597193A (en) * | 2020-04-30 | 2021-11-02 | 维沃移动通信有限公司 | Airflow generating device, heat radiating device and electronic equipment |
| CN116158201A (en) * | 2020-08-24 | 2023-05-23 | 辉达公司 | Smart Adaptive Heat Sinks for Cooling Data Center Equipment |
| CN112367824A (en) * | 2020-09-09 | 2021-02-12 | 宁波晨岚电气设备有限公司 | Electric energy metering box |
| CN112367824B (en) * | 2020-09-09 | 2022-05-03 | 宁波晨岚电气设备有限公司 | Electric energy metering box |
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Application publication date: 20111109 |