CN104881099B - Piezoelectric ceramics radiator and electronic equipment including the piezoelectric ceramics radiator - Google Patents
Piezoelectric ceramics radiator and electronic equipment including the piezoelectric ceramics radiator Download PDFInfo
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- CN104881099B CN104881099B CN201410072594.7A CN201410072594A CN104881099B CN 104881099 B CN104881099 B CN 104881099B CN 201410072594 A CN201410072594 A CN 201410072594A CN 104881099 B CN104881099 B CN 104881099B
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Abstract
The embodiment of the invention discloses a kind of piezoelectric ceramics radiator and the electronic equipment including the piezoelectric ceramics radiator, it include: current converter circuit, the current control circuit being connected with the current converter circuit output end, and at least one piezoelectric ceramic vibrator for being connected with the current control circuit output end, to which the converting direct-current power into alternating-current power of input be exported to current control circuit using the current converter circuit, and the piezoelectric ceramic vibrator is supplied to by the current control circuit, so that the piezoelectric ceramic vibrator is under the driving of alternating current, mechanically deform is generated with the variation of size of current and power frequency, so that surrounding air generates pressure difference, and flow air, play heat dissipation effect, to improve the heat dissipation effect of the electronic equipments such as laptop.
Description
Technical field
The present invention relates to radiator manufacturing technology field more particularly to a kind of piezoelectric ceramics radiator and including the pressure
The electronic equipment of electroceramics radiator.
Background technique
With the development of computer technology, the speed of service of laptop is getting faster, and leads to central processing unit (CPU)
Integrated level it is higher and higher, power consumption also increases therewith, and the volume of laptop is more and more frivolous so that heat dissipation at one
Crucial technical problem.Since the discharge of heat is related to the stability of whole system and the service life of product, if heat dissipation effect
Fruit is bad, will lead to computer components and is under the condition of high temperature work, not only will affect the speed of service of computer components, can also contract
The service life of short computer components, or even cause irreversible loss.Thus, effective heat dissipation has very important meaning.
But the heat dissipation effect of laptop is poor in the prior art.
Summary of the invention
In order to solve the above technical problems, the embodiment of the invention provides a kind of piezoelectric ceramics radiator and including the piezoelectricity
The electronic equipment of ceramic heat radiator, to improve the heat dissipation effect of the electronic equipments such as laptop.
To solve the above problems, the embodiment of the invention provides following technical solutions:
A kind of piezoelectric ceramics radiator, the radiator include:
Current converter circuit, the current converter circuit export the converting direct-current power into alternating-current power of input；
The current control circuit being connected with the current converter circuit output end；
At least one piezoelectric ceramic vibrator being connected with the current control circuit output end, the current control circuit are
The piezoelectric ceramic vibrator provides exchange driving current.
Preferably, the piezoelectric ceramics radiator includes multiple piezoelectric ceramic vibrators.
Preferably, the height of the multiple piezoelectric ceramic vibrator is not completely equivalent.
Preferably, the height of the multiple piezoelectric ceramic vibrator is completely unequal.
Preferably, in the multiple piezoelectric ceramic vibrator, the distance between adj acent piezoelectric ceramic vibrator is not completely equivalent.
Preferably, in the multiple piezoelectric ceramic vibrator, the distance between adj acent piezoelectric ceramic vibrator is completely unequal.
Preferably, in the multiple piezoelectric ceramic vibrator, the phase of adj acent piezoelectric ceramic vibrator is not exactly the same.
Preferably, in the multiple piezoelectric ceramic vibrator, the phase of adj acent piezoelectric ceramic vibrator is not completely identical.
Preferably, in the piezoelectric ceramic vibrator short transverse, the distance between adj acent piezoelectric ceramic vibrator is endless
It is exactly the same.
Preferably, in the piezoelectric ceramic vibrator short transverse, the distance between adj acent piezoelectric ceramic vibrator is gradually
It increases or reduces.
Preferably, the piezoelectric ceramics radiator further include:
The heat pipe being connected with the piezoelectric ceramic vibrator；
It is connected with the heat pipe, and is located at the radiating fin that the heat pipe deviates from the piezoelectric ceramic vibrator side.
Preferably, the heat pipe is metal heat pipe, and the radiating fin is heat dissipation metal fin.
A kind of electronic equipment, comprising:
Central processing unit；
Piezoelectric ceramics radiator described in any of the above embodiments, wherein the electric current in the piezoelectric ceramics radiator turns
Circuit is changed to be connected with the central processing unit.
Preferably, when the piezoelectric ceramics radiator includes heat pipe and radiating fin, the electronic equipment further include:
The metal heat-conducting block being in contact with the central processor radiating face, and the metal heat-conducting block and the heat pipe phase
Even.
Preferably, the metal heat-conducting block is connected with the radiating surface of the central processing unit by electric silica gel.
Compared with prior art, above-mentioned technical proposal has the advantage that
Piezoelectric ceramics radiator and the electronics including the piezoelectric ceramics radiator provided by the embodiment of the present invention are set
It is standby, comprising: current converter circuit, the current control circuit being connected with the current converter circuit output end and at least one
The piezoelectric ceramic vibrator being connected with the current control circuit output end, thus using the current converter circuit by the straight of input
Galvanic electricity is converted into exchange electricity output and is supplied to the piezoelectric ceramic vibrator to current control circuit, and by the current control circuit
Son, so that the piezoelectric ceramic vibrator under the driving of alternating current, is generated with the variation of size of current and power frequency
Mechanically deform so that surrounding air generates pressure difference, and flows air, heat dissipation effect is played, to improve notebook
The heat dissipation effect of the electronic equipments such as computer.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is the present invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the structural schematic diagram of piezoelectric ceramics radiator provided in one embodiment of the invention；
Fig. 2 is the structural schematic diagram of piezoelectric ceramics radiator provided in another embodiment of the present invention；
Fig. 3 is the structural schematic diagram of piezoelectric ceramics radiator provided in another embodiment of the invention；
Fig. 4 is the structural schematic diagram of piezoelectric ceramics radiator provided in further embodiment of the present invention；
Fig. 5 is the structural schematic diagram of piezoelectric ceramics radiator provided in another embodiment of the invention；
Fig. 6 is the structural schematic diagram of piezoelectric ceramics radiator provided in further embodiment of the present invention；
Fig. 7 is the structural schematic diagram of piezoelectric ceramics radiator provided in another embodiment of the invention；
Fig. 8 is the structural schematic diagram of electronic equipment provided in one embodiment of the invention.
Specific embodiment
Just as described in the background section, the heat dissipation effect of laptop is poor in the prior art.
Inventor is the study found that laptop in the prior art mainly uses following two radiating mode:
One is active heat dissipations, i.e., install fan in laptop and radiate, as laptop is more next
It is more frivolous, so that the volume of fan is also more and more frivolous, correspondingly, the height of Fan axial center and shaft is also smaller and smaller, and wind
Oil content between fan axle center and shaft is limited, and along with the rotation of fan, the oil between axle center and shaft constantly steams
Hair and be carbonized into greasy filth, gradually decreased so as to cause the oil content between Fan axial center and shaft, when Fan axial center and shaft it
Between oil content when being down to zero, Fan axial center and shaft rely on the frictional rotation of greasy filth, and frictional force is larger, so that the revolving speed of fan
It drastically reduces, and generates a large amount of heat, fan no longer meets the radiating requirements of laptop at this time, can seriously affect notebook
The reliability of computer.Inventor further study show that, when the thickness of fan is less than 4 ㎜, the reliability of fan cannot
Meet the radiating requirements of laptop, to be not suitable for the lightening development of laptop.
One is passive heat radiations, i.e., radiate in laptop by high radiation temperature uniforming heat radiation material, still,
Current this mode can only meet the electronic equipment of low power consumption, i.e. the power consumption of its CPU electronic equipment that is not more than 3w, and existing skill
The CPU power consumption of laptop in art is much larger than 3w, so that its radiating requirements for being difficult to meet laptop.
In view of this, the embodiment of the invention provides a kind of piezoelectric ceramics radiator, which includes:
Current converter circuit, the current converter circuit export the converting direct-current power into alternating-current power of input；
The current control circuit being connected with the current converter circuit output end；
At least one piezoelectric ceramic vibrator being connected with the current control circuit output end, the current control circuit are
The piezoelectric ceramic vibrator provides exchange driving current.
Correspondingly, the embodiment of the invention also provides a kind of electronic equipment, comprising: central processing unit and above-mentioned piezoelectric ceramics
Radiator, wherein the current converter circuit in the piezoelectric ceramics radiator is connected with the central processing unit.
Piezoelectric ceramics radiator and the electronics including the piezoelectric ceramics radiator provided by the embodiment of the present invention are set
It is standby, comprising: current converter circuit, the current control circuit being connected with the current converter circuit output end and at least one
The piezoelectric ceramic vibrator being connected with the current control circuit output end, thus using the current converter circuit by the straight of input
Galvanic electricity is converted into exchange electricity output and is supplied to the piezoelectric ceramic vibrator to current control circuit, and by the current control circuit
Son, so that the piezoelectric ceramic vibrator under the driving of alternating current, is generated with the variation of size of current and power frequency
Mechanically deform so that surrounding air generates pressure difference, and flows air, heat dissipation effect is played, to improve notebook
The heat dissipation effect of the electronic equipments such as computer.
It can be seen that piezoelectric ceramic vibrator is to exchange in piezoelectric ceramics radiator provided by the embodiment of the present invention
Electric current driving is lower to generate mechanically deform, to drive surrounding air flowing to radiate, without regard to active heat dissipation apoplexy
The rotational problems of shaft and axle center are fanned, so as to avoid when the thickness of fan is less than 4 ㎜, the reliability of fan is not able to satisfy pen
The radiating requirements for remembering this computer, the problem of causing it to be not suitable for laptop lightening development.Moreover, the present invention is implemented
Provided by example in piezoelectric ceramics radiator, the quantity of piezoelectric ceramic vibrator be it is adjustable, the quantity of piezoelectric ceramic vibrator is got over
More, heat dissipation effect is better, so as to install an appropriate number of piezoelectricity pottery according to the power consumption of the electronic equipments such as laptop
Porcelain oscillator, the scope of application are wider.
Therefore, piezoelectric ceramics radiator provided by the embodiment of the present invention, compared to the prior art in radiator,
Not only stability is good, applied widely, applies also for the lightening development of the electronic equipments such as laptop.
To make the above purposes, features and advantages of the invention more obvious and understandable, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.
Detail is elaborated in the following description to fully understand the present invention.But the present invention can with it is a variety of not
Other way described herein is same as to implement, those skilled in the art can do class without violating the connotation of the present invention
Like popularization.Therefore the present invention is not limited to the specific embodiments disclosed below.
The embodiment of the invention provides a kind of piezoelectric ceramics radiators, as shown in Figure 1, the radiator includes:
Current converter circuit 1, the current converter circuit 1 export the converting direct-current power into alternating-current power of input；
The current control circuit 2 being connected with 1 output end of current converter circuit；
At least one piezoelectric ceramic vibrator 3 being connected with 2 output end of current control circuit, the current control circuit
2 provide exchange driving current for the piezoelectric ceramic vibrator 3.
It should be noted that piezoelectric ceramics radiator provided by the embodiment of the present invention, may include a piezoelectricity pottery
Porcelain oscillator 3 also may include multiple piezoelectric ceramic vibrators 3.In one embodiment of the invention, it makes pottery to improve the piezoelectricity
The heat dissipation effect of porcelain radiator, the piezoelectric ceramics radiator preferably include multiple piezoelectric ceramic vibrators 3, but the present invention couple
This and without limitation, it is depending on the circumstances.
Below by taking the piezoelectric ceramics radiator includes multiple piezoelectric ceramic vibrators 3 as an example, to institute of the embodiment of the present invention
The piezoelectric ceramics radiator of offer describes in detail.
In piezoelectric ceramics radiator provided by the embodiment of the present invention, the piezoelectric ceramic vibrator 3 is in alternating current
Under driving, mechanically deform can be generated with the variation of size of current and power frequency, i.e., with the change of size of current and power frequency
It is turned into reciprocating motion, so that surrounding air generates pressure difference, and air is driven to flow, play heat dissipation effect.
But when size and frequency reciprocating of the piezoelectric ceramic vibrator 3 with electric current, certain noise can be generated,
And noise generated frequency and amplitude is by the height of the piezoelectric ceramic vibrator 3, reciprocating frequence, adj acent piezoelectric ceramic vibrator 3
The distance between and adj acent piezoelectric ceramic vibrator 3 phase influence.
Therefore, in one embodiment of the present embodiment, as shown in Fig. 2, the height of the multiple piezoelectric ceramic vibrator 3 is not
It is essentially equal, so that the multiple piezoelectric ceramic vibrator 3 in reciprocatory movement, is produced at different piezoelectric ceramic vibrators 3
The amplitude size of raw noise is not exactly the same, to reduce the size of noise.
Preferably, the height of the multiple piezoelectric ceramic vibrator 3 is completely unequal, so that the multiple piezoelectric ceramic vibrator
Son 3 is in reciprocatory movement, and noise generated amplitude size is entirely different at different piezoelectric ceramic vibrators 3, thus changing
In terms of becoming the multiple 3 height of piezoelectric ceramic vibrator, the size of noise is reduced to greatest extent, but the present invention does not limit this
It is fixed, specifically depend on the circumstances.
In the above-described embodiments on the basis of any embodiment, in one embodiment of the invention, as shown in figure 3, institute
It states in multiple piezoelectric ceramic vibrators 3, the distance between adj acent piezoelectric ceramic vibrator 3 is not completely equivalent, so that the multiple pressure
Electroceramics oscillator 3 is in reciprocatory movement, the noise generated incomplete phase of amplitude size between adj acent piezoelectric ceramic vibrator 3
Together, to reduce the size of noise.
Preferably, in the multiple piezoelectric ceramic vibrator 3, the distance between adj acent piezoelectric ceramic vibrator 3 is completely unequal,
So that the multiple piezoelectric ceramic vibrator 3 is in reciprocatory movement, it is noise generated between adj acent piezoelectric ceramic vibrator 3
Amplitude size is entirely different, to reduce noise to greatest extent in terms of changing the multiple 3 height of piezoelectric ceramic vibrator
Size, but the present invention is to this and without limitation, specifically depends on the circumstances.
Specifically, in one embodiment of the invention, can be directly changed between adj acent piezoelectric ceramic vibrator 3 away from
From, it can also be by the shape of the change piezoelectric ceramic vibrator 3, to change the distance between adj acent piezoelectric ceramic vibrator 3, this
Invention is to this and without limitation, depending on the circumstances.
In the above-described embodiments on the basis of any embodiment, in one embodiment of the invention, as shown in figure 4, institute
It states in multiple piezoelectric ceramic vibrators 3, the phase of adj acent piezoelectric ceramic vibrator 3 is not exactly the same, so that the multiple piezoelectricity
Ceramic vibrator 3 is in reciprocatory movement, and noise generated amplitude is positive and negative at synchronization, adj acent piezoelectric ceramic vibrator 3
Not exactly the same, so that synchronization, noise generated positive and negative amplitude is cancelled out each other at different piezoelectric ceramic vibrators 3,
To reduce the size of noise.
Preferably, in the multiple piezoelectric ceramic vibrator 3, the phase of adj acent piezoelectric ceramic vibrator 3 is entirely different, such as Fig. 5
It is shown, so that the multiple piezoelectric ceramic vibrator 3 is in reciprocatory movement, in synchronization, adj acent piezoelectric ceramic vibrator 3
It is positive and negative entirely different to locate noise generated amplitude, thus in terms of changing 3 phase of adj acent piezoelectric ceramic vibrator, to greatest extent
The size of noise is reduced, but the present invention is to this and without limitation, specifically depends on the circumstances.
In the above-described embodiments on the basis of any embodiment, in one embodiment of the invention, as shown in fig. 6,
In the piezoelectric ceramic vibrator short transverse, the distance between adj acent piezoelectric ceramic vibrator 3 is not exactly the same, it is preferred that
In the piezoelectric ceramic vibrator short transverse, the distance between adj acent piezoelectric ceramic vibrator 3 is gradually increased or reduces, thus logical
It crosses between change adj acent piezoelectric ceramic vibrator 3, the fight amount of air at different height, to change the multiple piezoelectric ceramic vibrator
3 in reciprocatory movement, noise generated amplitude size at different piezoelectric ceramic vibrators 3, so that different piezoelectric ceramic vibrators
Noise generated amplitude size is not exactly the same at son 3, to reduce the size of noise.
Based on any of the above embodiments, in one embodiment of the invention, as shown in fig. 7, the piezoelectricity is made pottery
Porcelain radiator further include: the heat pipe 4 being connected with the piezoelectric ceramic vibrator 3, and be connected with the heat pipe 4, and be located at institute
The radiating fin 5 that heat pipe 4 deviates from 3 side of piezoelectric ceramic vibrator is stated, to further increase the piezoelectric ceramics radiator
Heat dissipation effect.
Preferably, the heat pipe 4 is metal heat pipe 4, and the radiating fin 5 is heat dissipation metal fin, thus described in guaranteeing
Heat pipe 4 and radiating fin 5 have good heat-conductive characteristic.
It can be seen that piezoelectric ceramics radiator provided by the embodiment of the present invention, not only has good heat dissipation effect,
Also noise is smaller, has good sound quality.
In addition, the embodiment of the invention also provides a kind of electronic equipment, as shown in Figure 8, comprising: central processing unit is (in figure
It is not shown), and the piezoelectric ceramics radiator being connected with the central processing unit, wherein the piezoelectric ceramics radiator
For piezoelectric ceramics radiator provided in any embodiment of the present invention, and the electric current in the piezoelectric ceramics radiator turns
It changes circuit 1 to be connected with the central processing unit, so as to be the central processing unit using the piezoelectric ceramics radiator
Good heat dissipation effect is provided, the heat dissipation performance of the electronic equipment is improved.
It should be noted that the electronics is set when the piezoelectric ceramics radiator includes heat pipe 4 and radiating fin 5
It is standby further include: the metal heat-conducting block 6 being in contact with the central processor radiating face, and the metal heat-conducting block 6 and the heat
Pipe 4 is connected, so as to further be radiated using the heat pipe 4 and radiating fin 5 to the central processing unit, with into one
Step improves the heat dissipation performance of the electronic equipment.
In a preferred embodiment of the invention, the radiating surface of the metal heat-conducting block 6 and the central processing unit is logical
Electric silica gel 7 is crossed to be connected, so that the heat-conductive characteristic between the central processing unit and the metal heat-conducting block 6 is improved, so as to
The heat caused by the central processing unit emits as early as possible, and then further improves the thermal diffusivity of the electronic equipment
Energy.
In conclusion piezoelectric ceramics radiator provided by the embodiment of the present invention and including the piezoelectric ceramics radiator
Electronic equipment, comprising: current converter circuit 1, the current control circuit 2 being connected with 1 output end of current converter circuit, with
And at least one piezoelectric ceramic vibrator 3 for being connected with 2 output end of current control circuit, to utilize electric current conversion electricity
Road 1 exports the converting direct-current power into alternating-current power of input to current control circuit 2, and is provided by the current control circuit 2
To the piezoelectric ceramic vibrator 3 so that the piezoelectric ceramic vibrator 3 is under the driving of alternating current, with size of current and
The variation of power frequency generates mechanically deform, so that surrounding air generates pressure difference, and drives surrounding air stream
It is dynamic, heat dissipation effect is played, to improve the heat dissipation effect of the electronic equipments such as laptop.
Various pieces are described in a progressive manner in this specification, and what each some importance illustrated is and other parts
Difference, same and similar part may refer to each other between various pieces.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to 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, of the invention
It is not intended to be limited to embodiment illustrated herein, and is to fit to consistent with the principles and novel features disclosed in this article
Widest scope.
Claims (13)
1. a kind of piezoelectric ceramics radiator, which is characterized in that the radiator includes:
Current converter circuit, the current converter circuit export the converting direct-current power into alternating-current power of input；
The current control circuit being connected with the current converter circuit output end；
At least one piezoelectric ceramic vibrator being connected with the current control circuit output end, the current control circuit is described
Piezoelectric ceramic vibrator provides exchange driving current；
The piezoelectric ceramics radiator includes multiple piezoelectric ceramic vibrators, in the multiple piezoelectric ceramic vibrator, adj acent piezoelectric
The distance between ceramic vibrator is not completely equivalent.
2. piezoelectric ceramics radiator according to claim 1, which is characterized in that the height of the multiple piezoelectric ceramic vibrator
Degree is not completely equivalent.
3. piezoelectric ceramics radiator according to claim 2, which is characterized in that the height of the multiple piezoelectric ceramic vibrator
Degree is completely unequal.
4. piezoelectric ceramics radiator according to claim 1, which is characterized in that in the multiple piezoelectric ceramic vibrator,
The distance between adj acent piezoelectric ceramic vibrator is completely unequal.
5. piezoelectric ceramics radiator according to claim 1, which is characterized in that in the multiple piezoelectric ceramic vibrator,
The phase of adj acent piezoelectric ceramic vibrator is not exactly the same.
6. piezoelectric ceramics radiator according to claim 5, which is characterized in that in the multiple piezoelectric ceramic vibrator,
The phase of adj acent piezoelectric ceramic vibrator is not completely identical.
7. piezoelectric ceramics radiator according to claim 1-6, which is characterized in that along the piezoelectric ceramics
In oscillator short transverse, the distance between adj acent piezoelectric ceramic vibrator is not exactly the same.
8. piezoelectric ceramics radiator according to claim 7, which is characterized in that along the piezoelectric ceramic vibrator height
On direction, the distance between adj acent piezoelectric ceramic vibrator is gradually increased or reduces.
9. piezoelectric ceramics radiator according to claim 1, which is characterized in that the piezoelectric ceramics radiator also wraps
It includes:
The heat pipe being connected with the piezoelectric ceramic vibrator；
It is connected with the heat pipe, and is located at the radiating fin that the heat pipe deviates from the piezoelectric ceramic vibrator side.
10. piezoelectric ceramics radiator according to claim 9, which is characterized in that the heat pipe is metal heat pipe, described
Radiating fin is heat dissipation metal fin.
11. a kind of electronic equipment characterized by comprising
Central processing unit；
The described in any item piezoelectric ceramics radiators of claim 1-10, wherein the electricity in the piezoelectric ceramics radiator
Stream conversion circuit is connected with the central processing unit.
12. electronic equipment according to claim 11, which is characterized in that when the piezoelectric ceramics radiator includes heat pipe
When with radiating fin, the electronic equipment further include:
The metal heat-conducting block being in contact with the central processor radiating face, and the metal heat-conducting block is connected with the heat pipe.
13. electronic equipment according to claim 12, which is characterized in that the metal heat-conducting block and the central processing unit
Radiating surface by electric silica gel be connected.
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| CN201410072594.7A CN104881099B (en) | 2014-02-28 | 2014-02-28 | Piezoelectric ceramics radiator and electronic equipment including the piezoelectric ceramics radiator |
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| CN201410072594.7A CN104881099B (en) | 2014-02-28 | 2014-02-28 | Piezoelectric ceramics radiator and electronic equipment including the piezoelectric ceramics radiator |
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| CN105283041A (en) * | 2015-10-26 | 2016-01-27 | 南京航空航天大学 | Piezoelectric driven rapid cooling device |
| CN111356325B (en) * | 2018-12-20 | 2022-04-15 | 中车唐山机车车辆有限公司 | Power box |
| CN113692182A (en) * | 2021-08-05 | 2021-11-23 | Oppo广东移动通信有限公司 | Heat dissipation device and electronic equipment |
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| CN101222832A (en) * | 2007-01-11 | 2008-07-16 | 乐金电子（昆山）电脑有限公司 | Cooling device for electronic equipments |
| CN102313265A (en) * | 2010-07-08 | 2012-01-11 | 绿种子能源科技股份有限公司 | Electronic device with heat-radiating function |
| CN102338361A (en) * | 2010-07-27 | 2012-02-01 | 夏志清 | Radiating fin of light emitting diode (LED) lighting lamp |
| CN103176575A (en) * | 2011-12-24 | 2013-06-26 | 西安大昱光电科技有限公司 | Synthetic jet flow heat dissipation device used for central processing unit (CPU) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7061161B2 (en) * | 2002-02-15 | 2006-06-13 | Siemens Technology-To-Business Center Llc | Small piezoelectric air pumps with unobstructed airflow |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101222832A (en) * | 2007-01-11 | 2008-07-16 | 乐金电子（昆山）电脑有限公司 | Cooling device for electronic equipments |
| CN102313265A (en) * | 2010-07-08 | 2012-01-11 | 绿种子能源科技股份有限公司 | Electronic device with heat-radiating function |
| CN102338361A (en) * | 2010-07-27 | 2012-02-01 | 夏志清 | Radiating fin of light emitting diode (LED) lighting lamp |
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