CN104881099A - Piezoelectric ceramic heat radiation device and electronic equipment comprising same - Google Patents
Piezoelectric ceramic heat radiation device and electronic equipment comprising same Download PDFInfo
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- CN104881099A CN104881099A CN201410072594.7A CN201410072594A CN104881099A CN 104881099 A CN104881099 A CN 104881099A CN 201410072594 A CN201410072594 A CN 201410072594A CN 104881099 A CN104881099 A CN 104881099A
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Abstract
The embodiment of the invention discloses a piezoelectric ceramic heat radiation device and electronic equipment comprising same. The heat radiation device comprises a current switching circuit, a current control circuit connected to the output end of the current switching circuit, and at least a piezoelectric ceramic oscillator connected to the output end of the current control circuit. Input direct currents are converted into alternating currents by the use of the current switching circuit, then the alternating currents are output to the current control circuit and are provided for the piezoelectric ceramic oscillator through the current control circuit, and the piezoelectric ceramic oscillator generates mechanical deformation along with the change of the current and current frequency under the driving of the alternating currents, so that ambient air forms pressure differentials, the air flows, heat radiation effects are achieved, and the heat radiation effects of the electronic equipment such as notebook computers are enhanced.
Description
Technical field
The present invention relates to heat abstractor manufacturing technology field, particularly relate to a kind of piezoelectric ceramics heat abstractor and comprise the electronic equipment of this piezoelectric ceramics heat abstractor.
Background technology
Along with the development of computer technology, the travelling speed of notebook computer is more and more faster, and cause the integrated level of central processing unit (CPU) more and more higher, power consumption also strengthens thereupon, and the volume of notebook computer is more and more frivolous, make to have dispelled the heat into a crucial technical matters.Discharge due to heat is related to the stability of whole system and the serviceable life of product, if radiating effect is bad, works under computer components will be caused to be in the condition of high temperature, not only can affect the travelling speed of computer components, also can shorten the life-span of computer components, even cause irreversible loss.Thus, effective heat radiation has very important meaning.
But the radiating effect of notebook computer is poor in prior art.
Summary of the invention
For solving the problems of the technologies described above, embodiments providing a kind of piezoelectric ceramics heat abstractor and comprising the electronic equipment of this piezoelectric ceramics heat abstractor, to improve the radiating effect of the electronic equipments such as notebook computer.
For solving the problem, embodiments provide following technical scheme:
A kind of piezoelectric ceramics heat abstractor, this heat abstractor comprises:
Current converter circuit, the converting direct-current power into alternating-current power of input exports by described current converter circuit;
The current control circuit be connected with described current converter circuit output terminal;
At least one piezoelectric ceramic vibrator be connected with described current control circuit output terminal, described current control circuit provides interchange drive current for described piezoelectric ceramic vibrator.
Preferably, described piezoelectric ceramics heat abstractor comprises multiple piezoelectric ceramic vibrator.
Preferably, the height of described multiple piezoelectric ceramic vibrator is not exclusively equal.
Preferably, the height of described multiple piezoelectric ceramic vibrator is completely unequal.
Preferably, in described multiple piezoelectric ceramic vibrator, the distance between adj acent piezoelectric ceramic vibrator is not exclusively equal.
Preferably, in described multiple piezoelectric ceramic vibrator, the distance between adj acent piezoelectric ceramic vibrator is completely unequal.
Preferably, in described multiple piezoelectric ceramic vibrator, the phase place of adj acent piezoelectric ceramic vibrator is incomplete same.
Preferably, in described multiple piezoelectric ceramic vibrator, the phase place of adj acent piezoelectric ceramic vibrator is completely not identical.
Preferably, along in described piezoelectric ceramic vibrator short transverse, the distance between adj acent piezoelectric ceramic vibrator is incomplete same.
Preferably, along in described piezoelectric ceramic vibrator short transverse, the distance between adj acent piezoelectric ceramic vibrator increases gradually or reduces.
Preferably, described piezoelectric ceramics heat abstractor also comprises:
The heat pipe be connected with described piezoelectric ceramic vibrator;
Be connected with described heat pipe, and be positioned at the radiating fin that described heat pipe deviates from described piezoelectric ceramic vibrator side.
Preferably, described heat pipe is metal heat pipe, and described radiating fin is heat dissipation metal fin.
A kind of electronic equipment, comprising:
Central processing unit;
Piezoelectric ceramics heat abstractor described in above-mentioned any one, wherein, the current converter circuit in described piezoelectric ceramics heat abstractor is connected with described central processing unit.
Preferably, when described piezoelectric ceramics heat abstractor comprises heat pipe and radiating fin, described electronic equipment also comprises:
The metal heat-conducting block contacted with described central processor radiating face, and described metal heat-conducting block is connected with described heat pipe.
Preferably, described metal heat-conducting block is connected by electric silica gel with the radiating surface of described central processing unit.
Compared with prior art, technique scheme has the following advantages:
The piezoelectric ceramics heat abstractor that the embodiment of the present invention provides and comprise the electronic equipment of this piezoelectric ceramics heat abstractor, comprise: current converter circuit, the current control circuit be connected with described current converter circuit output terminal, and at least one piezoelectric ceramic vibrator be connected with described current control circuit output terminal, thus utilize described current converter circuit that the converting direct-current power into alternating-current power of input is exported to current control circuit, and be supplied to described piezoelectric ceramic vibrator by described current control circuit, thus make described piezoelectric ceramic vibrator under the driving of alternating current, change with size of current and power frequency produces mechanically deform, and then make its ambient air produce pressure reduction, and air is flowed, play radiating effect, to improve the radiating effect of the electronic equipments such as notebook computer.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of piezoelectric ceramics heat abstractor of Fig. 1 for providing in one embodiment of the invention;
The structural representation of piezoelectric ceramics heat abstractor of Fig. 2 for providing in another embodiment of the present invention;
The structural representation of piezoelectric ceramics heat abstractor of Fig. 3 for providing in another embodiment of the present invention;
The structural representation of piezoelectric ceramics heat abstractor of Fig. 4 for providing in another embodiment of the present invention;
The structural representation of piezoelectric ceramics heat abstractor of Fig. 5 for providing in another embodiment of the present invention;
The structural representation of piezoelectric ceramics heat abstractor of Fig. 6 for providing in another embodiment of the present invention;
The structural representation of piezoelectric ceramics heat abstractor of Fig. 7 for providing in another embodiment of the present invention;
The structural representation of electronic equipment of Fig. 8 for providing in one embodiment of the invention.
Embodiment
Just as described in the background section, in prior art, the radiating effect of notebook computer is poor.
Inventor studies discovery, and notebook computer of the prior art mainly adopts following two kinds of radiating modes:
One is active heat radiation, namely in notebook computer, provided with fan dispels the heat, along with notebook computer is more and more frivolous, make the volume of fan also more and more frivolous, accordingly, the height of Fan axial center and rotating shaft is also more and more less, and the oleaginousness between Fan axial center and rotating shaft is limited, along with the rotation of fan, oil between its axle center with rotating shaft constantly evaporates and becomes greasy filth with carbonization, thus cause the oleaginousness between Fan axial center and rotating shaft to reduce gradually, when oleaginousness between Fan axial center and rotating shaft is down to zero, Fan axial center and rotating shaft rely on the frictional rotation of greasy filth, friction force is larger, the rotating speed of fan is sharply reduced, and produce a large amount of heat, now fan no longer meets the radiating requirements of notebook computer, the reliability of notebook computer can be had a strong impact on.Inventor studies discovery further, and when the thickness of fan is less than 4 ㎜, the reliability of fan can not meet the radiating requirements of notebook computer, thus is not suitable for the lightening development of notebook computer.
One is passive heat radiation, namely in notebook computer, rely on high radiation temperature uniforming heat radiation material to dispel the heat, but, current this mode can only meet the electronic equipment of low power consumption, namely the power consumption of its CPU is not more than the electronic equipment of 3w, and the CPU power consumption of notebook computer of the prior art is much larger than 3w, thus it is made to be difficult to meet the radiating requirements of notebook computer.
In view of this, embodiments provide a kind of piezoelectric ceramics heat abstractor, this heat abstractor comprises:
Current converter circuit, the converting direct-current power into alternating-current power of input exports by described current converter circuit;
The current control circuit be connected with described current converter circuit output terminal;
At least one piezoelectric ceramic vibrator be connected with described current control circuit output terminal, described current control circuit provides interchange drive current for described piezoelectric ceramic vibrator.
Accordingly, the embodiment of the present invention additionally provides a kind of electronic equipment, comprising: central processing unit and above-mentioned piezoelectric ceramics heat abstractor, and wherein, the current converter circuit in described piezoelectric ceramics heat abstractor is connected with described central processing unit.
The piezoelectric ceramics heat abstractor that the embodiment of the present invention provides and comprise the electronic equipment of this piezoelectric ceramics heat abstractor, comprise: current converter circuit, the current control circuit be connected with described current converter circuit output terminal, and at least one piezoelectric ceramic vibrator be connected with described current control circuit output terminal, thus utilize described current converter circuit that the converting direct-current power into alternating-current power of input is exported to current control circuit, and be supplied to described piezoelectric ceramic vibrator by described current control circuit, thus make described piezoelectric ceramic vibrator under the driving of alternating current, change with size of current and power frequency produces mechanically deform, and then make its ambient air produce pressure reduction, and air is flowed, play radiating effect, to improve the radiating effect of the electronic equipments such as notebook computer.
As can be seen here, in the piezoelectric ceramics heat abstractor that the embodiment of the present invention provides, piezoelectric ceramic vibrator produces mechanically deform under alternating current drives, drive its ambient air to flow to dispel the heat, and do not relate to the rotational problems in the rotating shaft of active heat radiation fan and axle center, thus avoiding when the thickness of fan is less than 4 ㎜, the reliability of fan can not meet the radiating requirements of notebook computer, causes it to be not suitable for the problem of the lightening development of notebook computer.And, in the piezoelectric ceramics heat abstractor that the embodiment of the present invention provides, the quantity of piezoelectric ceramic vibrator is adjustable, the quantity of piezoelectric ceramic vibrator is more, its radiating effect is better, thus can according to the power consumption of the electronic equipments such as notebook computer, install the piezoelectric ceramic vibrator of right quantity, the scope of application is wider.
Therefore, the piezoelectric ceramics heat abstractor that the embodiment of the present invention provides, compared to heat abstractor of the prior art, not only good stability, applied widely, be also applicable to the lightening development of the electronic equipments such as notebook computer.
For enabling above-mentioned purpose of the present invention, feature and advantage more become apparent, and are described in detail the specific embodiment of the present invention below in conjunction with accompanying drawing.
Set forth detail in the following description so that fully understand the present invention.But the present invention can be different from alternate manner described here to implement with multiple, those skilled in the art can when without prejudice to doing similar popularization when intension of the present invention.Therefore the present invention is not by the restriction of following public concrete enforcement.
Embodiments provide a kind of piezoelectric ceramics heat abstractor, as shown in Figure 1, this heat abstractor comprises:
Current converter circuit 1, the converting direct-current power into alternating-current power of input exports by described current converter circuit 1;
The current control circuit 2 be connected with described current converter circuit 1 output terminal;
At least one piezoelectric ceramic vibrator 3 be connected with described current control circuit 2 output terminal, described current control circuit 2 provides interchange drive current for described piezoelectric ceramic vibrator 3.
It should be noted that the piezoelectric ceramics heat abstractor that the embodiment of the present invention provides can comprise a piezoelectric ceramic vibrator 3, also can comprise multiple piezoelectric ceramic vibrator 3.In one embodiment of the invention, in order to improve the radiating effect of described piezoelectric ceramics heat abstractor, described piezoelectric ceramics heat abstractor preferably includes multiple piezoelectric ceramic vibrator 3, but the present invention does not limit this, is determined on a case-by-case basis.
Comprise multiple piezoelectric ceramic vibrator 3 for described piezoelectric ceramics heat abstractor below, the piezoelectric ceramics heat abstractor that the embodiment of the present invention provides is described in detail.
In the piezoelectric ceramics heat abstractor that the embodiment of the present invention provides, described piezoelectric ceramic vibrator 3 is under the driving of alternating current, mechanically deform can be produced with the change of size of current and power frequency, namely the change with size of current and power frequency is reciprocating, thus make its ambient air produce pressure reduction, and drive air to flow, play radiating effect.
But, when piezoelectric ceramic vibrator 3 with the size of electric current and frequency reciprocating time, can produce certain noise, and noise generated frequency and amplitude are by the impact of the phase place of the distance between the height of described piezoelectric ceramic vibrator 3, reciprocating frequence, adj acent piezoelectric ceramic vibrator 3 and adj acent piezoelectric ceramic vibrator 3.
Therefore, in an embodiment of the present embodiment, as shown in Figure 2, the height of described multiple piezoelectric ceramic vibrator 3 is not exclusively equal, to make described multiple piezoelectric ceramic vibrator 3 in reciprocatory movement, the noise generated amplitude size in different piezoelectric ceramic vibrator 3 place is incomplete same, thus reduces the size of noise.
Preferably, the height of described multiple piezoelectric ceramic vibrator 3 is completely unequal, to make described multiple piezoelectric ceramic vibrator 3 in reciprocatory movement, the noise generated amplitude size in different piezoelectric ceramic vibrator 3 place is completely different, thus in described multiple piezoelectric ceramic vibrator 3 height of change, reduce the size of noise to greatest extent, but the present invention does not limit to this, specifically depend on the circumstances.
On the basis of any embodiment in the above-described embodiments, in one embodiment of the invention, as shown in Figure 3, in described multiple piezoelectric ceramic vibrator 3, distance between adj acent piezoelectric ceramic vibrator 3 is not exclusively equal, to make described multiple piezoelectric ceramic vibrator 3 in reciprocatory movement, amplitude size noise generated between adj acent piezoelectric ceramic vibrator 3 is incomplete same, thus reduces the size of noise.
Preferably, in described multiple piezoelectric ceramic vibrator 3, distance between adj acent piezoelectric ceramic vibrator 3 is completely unequal, to make described multiple piezoelectric ceramic vibrator 3 in reciprocatory movement, amplitude size noise generated between adj acent piezoelectric ceramic vibrator 3 is completely different, thus in described multiple piezoelectric ceramic vibrator 3 height of change, reduces the size of noise to greatest extent, but the present invention does not limit this, specifically depend on the circumstances.
Concrete, in one embodiment of the invention, the distance between adj acent piezoelectric ceramic vibrator 3 directly can be changed, also can by changing the shape of described piezoelectric ceramic vibrator 3, change the distance between adj acent piezoelectric ceramic vibrator 3, the present invention does not limit this, is determined on a case-by-case basis.
On the basis of any embodiment in the above-described embodiments, in one embodiment of the invention, as shown in Figure 4, in described multiple piezoelectric ceramic vibrator 3, the phase place of adj acent piezoelectric ceramic vibrator 3 is incomplete same, thus make described multiple piezoelectric ceramic vibrator 3 in reciprocatory movement, at synchronization, the noise generated amplitude in adj acent piezoelectric ceramic vibrator 3 place is positive and negative incomplete same, and then make synchronization, the noise generated positive and negative amplitude in different piezoelectric ceramic vibrator 3 place is cancelled out each other, to reduce the size of noise.
Preferably, in described multiple piezoelectric ceramic vibrator 3, the phase place of adj acent piezoelectric ceramic vibrator 3 is completely different, as shown in Figure 5, to make described multiple piezoelectric ceramic vibrator 3 in reciprocatory movement, at synchronization, the positive and negative complete difference of amplitude that adj acent piezoelectric ceramic vibrator 3 place is noise generated, thus in change adj acent piezoelectric ceramic vibrator 3 phase place, reduce the size of noise to greatest extent, but the present invention does not limit this, specifically depend on the circumstances.
On the basis of any embodiment in the above-described embodiments, in one embodiment of the invention, as shown in Figure 6, along in described piezoelectric ceramic vibrator short transverse, distance between adj acent piezoelectric ceramic vibrator 3 is incomplete same, preferably, along in described piezoelectric ceramic vibrator short transverse, distance between adj acent piezoelectric ceramic vibrator 3 increases gradually or reduces, thus by changing between adj acent piezoelectric ceramic vibrator 3, the fight amount of differing heights place air, change described multiple piezoelectric ceramic vibrator 3 in reciprocatory movement, the amplitude size that different piezoelectric ceramic vibrator 3 place is noise generated, the amplitude size making different piezoelectric ceramic vibrator 3 place noise generated is incomplete same, to reduce the size of noise.
On the basis of above-mentioned any embodiment, in one embodiment of the invention, as shown in Figure 7, described piezoelectric ceramics heat abstractor also comprises: the heat pipe 4 be connected with described piezoelectric ceramic vibrator 3, and be connected with described heat pipe 4, and be positioned at the radiating fin 5 that described heat pipe 4 deviates from described piezoelectric ceramic vibrator 3 side, to improve the radiating effect of described piezoelectric ceramics heat abstractor further.
Preferably, described heat pipe 4 is metal heat pipe 4, and described radiating fin 5 is heat dissipation metal fin, thus ensures that described heat pipe 4 and radiating fin 5 have good heat-conductive characteristic.
As can be seen here, the piezoelectric ceramics heat abstractor that the embodiment of the present invention provides, not only has good radiating effect, goes back noise less, has good sound quality.
In addition, the embodiment of the present invention additionally provides a kind of electronic equipment, as shown in Figure 8, comprise: central processing unit (not shown), and the piezoelectric ceramics heat abstractor to be connected with described central processing unit, wherein, the piezoelectric ceramics heat abstractor of described piezoelectric ceramics heat abstractor for providing in any embodiment of the present invention, and the current converter circuit 1 in described piezoelectric ceramics heat abstractor is connected with described central processing unit, thus described piezoelectric ceramics heat abstractor can be utilized to provide good radiating effect for described central processing unit, improve the heat dispersion of described electronic equipment.
It should be noted that, when described piezoelectric ceramics heat abstractor comprises heat pipe 4 and radiating fin 5, described electronic equipment also comprises: the metal heat-conducting block 6 contacted with described central processor radiating face, and described metal heat-conducting block 6 is connected with described heat pipe 4, thus described heat pipe 4 and radiating fin 5 can be utilized to dispel the heat further to described central processing unit, to improve the heat dispersion of described electronic equipment further.
In a preferred embodiment of the invention, described metal heat-conducting block 6 is connected by electric silica gel 7 with the radiating surface of described central processing unit, thus the heat-conductive characteristic improved between described central processing unit and described metal heat-conducting block 6, so that the heat that described central processing unit produces emits as early as possible, and then further improve the heat dispersion of described electronic equipment.
In sum, the piezoelectric ceramics heat abstractor that the embodiment of the present invention provides and comprise the electronic equipment of this piezoelectric ceramics heat abstractor, comprise: current converter circuit 1, the current control circuit 2 be connected with described current converter circuit 1 output terminal, and at least one piezoelectric ceramic vibrator 3 be connected with described current control circuit 2 output terminal, thus utilize described current converter circuit 1 that the converting direct-current power into alternating-current power of input is exported to current control circuit 2, and be supplied to described piezoelectric ceramic vibrator 3 by described current control circuit 2, thus make described piezoelectric ceramic vibrator 3 under the driving of alternating current, change with size of current and power frequency produces mechanically deform, and then make its ambient air produce pressure reduction, and drive its ambient air to flow, play radiating effect, to improve the radiating effect of the electronic equipments such as notebook computer.
In this instructions, various piece adopts the mode of going forward one by one to describe, and what each some importance illustrated is the difference with other parts, between various piece identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to embodiment illustrated herein, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (15)
1. a piezoelectric ceramics heat abstractor, is characterized in that, this heat abstractor comprises:
Current converter circuit, the converting direct-current power into alternating-current power of input exports by described current converter circuit;
The current control circuit be connected with described current converter circuit output terminal;
At least one piezoelectric ceramic vibrator be connected with described current control circuit output terminal, described current control circuit provides interchange drive current for described piezoelectric ceramic vibrator.
2. piezoelectric ceramics heat abstractor according to claim 1, is characterized in that, described piezoelectric ceramics heat abstractor comprises multiple piezoelectric ceramic vibrator.
3. piezoelectric ceramics heat abstractor according to claim 2, is characterized in that, the height of described multiple piezoelectric ceramic vibrator is not exclusively equal.
4. piezoelectric ceramics heat abstractor according to claim 3, is characterized in that, the height of described multiple piezoelectric ceramic vibrator is completely unequal.
5. piezoelectric ceramics heat abstractor according to claim 2, is characterized in that, in described multiple piezoelectric ceramic vibrator, the distance between adj acent piezoelectric ceramic vibrator is not exclusively equal.
6. piezoelectric ceramics heat abstractor according to claim 5, is characterized in that, in described multiple piezoelectric ceramic vibrator, the distance between adj acent piezoelectric ceramic vibrator is completely unequal.
7. piezoelectric ceramics heat abstractor according to claim 2, is characterized in that, in described multiple piezoelectric ceramic vibrator, the phase place of adj acent piezoelectric ceramic vibrator is incomplete same.
8. piezoelectric ceramics heat abstractor according to claim 7, is characterized in that, in described multiple piezoelectric ceramic vibrator, the phase place of adj acent piezoelectric ceramic vibrator is completely not identical.
9. the piezoelectric ceramics heat abstractor according to any one of claim 1-8, is characterized in that, along in described piezoelectric ceramic vibrator short transverse, the distance between adj acent piezoelectric ceramic vibrator is incomplete same.
10. piezoelectric ceramics heat abstractor according to claim 9, is characterized in that, along in described piezoelectric ceramic vibrator short transverse, the distance between adj acent piezoelectric ceramic vibrator increases gradually or reduces.
11. piezoelectric ceramics heat abstractors according to claim 1, is characterized in that, described piezoelectric ceramics heat abstractor also comprises:
The heat pipe be connected with described piezoelectric ceramic vibrator;
Be connected with described heat pipe, and be positioned at the radiating fin that described heat pipe deviates from described piezoelectric ceramic vibrator side.
12. piezoelectric ceramics heat abstractors according to claim 12, it is characterized in that, described heat pipe is metal heat pipe, described radiating fin is heat dissipation metal fin.
13. 1 kinds of electronic equipments, is characterized in that, comprising:
Central processing unit;
Piezoelectric ceramics heat abstractor described in any one of claim 1-12, wherein, the current converter circuit in described piezoelectric ceramics heat abstractor is connected with described central processing unit.
14. electronic equipments according to claim 13, is characterized in that, when described piezoelectric ceramics heat abstractor comprises heat pipe and radiating fin, described electronic equipment also comprises:
The metal heat-conducting block contacted with described central processor radiating face, and described metal heat-conducting block is connected with described heat pipe.
15. electronic equipments according to claim 14, is characterized in that, described metal heat-conducting block is connected by electric silica gel with the radiating surface of described central processing unit.
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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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| CN104881099B CN104881099B (en) | 2019-08-27 |
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| 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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| CN104881099B (en) | 2019-08-27 |
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