CN202914408U - Fan noise and vibration elimination system - Google Patents
Fan noise and vibration elimination system Download PDFInfo
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- CN202914408U CN202914408U CN 201220631594 CN201220631594U CN202914408U CN 202914408 U CN202914408 U CN 202914408U CN 201220631594 CN201220631594 CN 201220631594 CN 201220631594 U CN201220631594 U CN 201220631594U CN 202914408 U CN202914408 U CN 202914408U
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Abstract
A fan noise and vibration elimination system comprises a sound wave inductor, a vibration inductor, an operation controller, a sound wave generator and a vibration generator. The noise produced inside a fan is received by the sound wave inductor, vibration generated inside the fan is received by the vibration inductor, generated sound wave detection signals and vibration detection signals are generated and transmitted to the operation controller, sound wave offset signals and vibration offset signals are generated by the operation controller and transmitted to the sound wave generator and the vibration generator, inversion sound wave and inversion vibration frequency are generated to eliminate the noise and the vibration generated by the fan.
Description
Technical field
The utility model relates to a kind of noise and vibration elimination system, espespecially a kind of fan noise and vibration elimination system of eliminating the interior noise that produces of fan and vibration.
Background technique
Press, because the Information of Science and Technology development rapidly, electronic product (as: computer etc.) in people's life and work, occupies more and more consequence, and becomes indispensable instrument.And it is general in order to promote the operational effectiveness of computer, so that the electronic component of computer internal work (for example: central processing unit (CPU), Central Processing Unit) power that consumes is also just larger, therefore, the thermal effect that causes electronic component to produce is also larger, and the higher just easier drift of working curve of the temperature in the relative computer, cause thus the electronic component running unstable, make easily computer produce misoperation, even produce computer when the machine phenomenon, and can burn the electronic component of computer internal work when serious.This shows that the heat radiation of computer is the problem of a puzzlement industry always, thereby, utilize fan to carry out the heat radiation of electronic component, just become an obligato ring in the computer framework; Because fan is taken away the heat that produces in the computer, so that computer can be stablized in running, though but the problem of heat radiation in the fan settlement computer, yet, extend also fan when running, produce noise and bring the problem of puzzlement, and its fan noise that the mutual vibration of each part produces when producing noise or running might turn round because of it time, still have the generation of noise in running up down even if this fan has been carried out after the best balance before running.
And the noise problem that fan produces, make the dealer be subject to suitable attention, because noise can make the people produce in various degree uneasiness and Anxiety, increase tired degree, reduce task performance, can cause what is more psychology and physiological injury, so, effectively abating the noise not only has its meaning academicly, have use value industrial, and the improvement in the daily life also is very helpful; At present general fan noise suppressor mode mainly is to be done by mechanism part own to improve and reach noise content and be reduced to purpose, as: the design such as mask shape, flabellum shape, stator blade and rib changes, the running that above-mentioned condition element changes by timeliness can't effectively reach afterwards equally, if in the situation that changes design, need to take into account again the requirement of heat radiation, usually so that the level of noise of fan running Noise and vibration noise causes more and more greatly and simultaneously cost to increase.
Yet above-mentioned noise control still has following shortcoming when using:
1. only change design or fan material and improve the problem that can't effectively solve and cause simultaneously assembly cost to increase.
2. additionally increasing fan component can make ahead of time appearance of resonant frequency and the vibrating noise production of fan increase.
3. even if balance is set rear in the lower generation that has equally noise that runs up.
Therefore, how to solve above-mentioned public problem and disappearance, the inventor who is this case desires most ardently the direction place that research improves with the relevant manufacturer that is engaged in the industry.
The model utility content
For this reason, for solving the shortcoming of above-mentioned known technology, main purpose of the present utility model is to provide a kind of fan noise and vibration elimination system of eliminating the interior noise that produces of fan and vibration.
Secondary objective of the present utility model provides a kind of being set as directly according to rotation speed of the fan and understand the noise of generation and fan noise that vibration is eliminated and vibrate the elimination system.
Secondary objective of the present utility model provides a kind of fan noise and vibration elimination system of eliminating running noise and vibration and reducing simultaneously cost.
For reaching above-mentioned purpose, the utility model proposes a kind of fan noise and vibration elimination system, be applied to a fan, this system comprises at least: an acoustic wave, one vibration sensor, one computing unit, one sound generator and a vibration generator, wherein this acoustic wave is arranged at described fan inside and receives the noise that produces in this fan and then produce a sound wave detection signal, and this vibration sensor is arranged at described fan inside equally and detect the vibration that produces in this fan and then produce a vibration detection signal, and this computing unit is electrically connected described acoustic wave and vibration sensor and receive described sound wave detection signal and vibration detection signal, and then produce a sound wave and offset signal and a vibration counteracting signal, offset signal to produce the reverse sound wave that to eliminate noise in the fan and this sound generator is electrically connected described computing unit and receive described sound wave, and then reach and eliminate the noise that produces in the fan, this vibration generator is electrically connected described computing unit and receives described vibration counteracting signal and can eliminate the reversal of vibrations frequency of fan internal vibration to produce again, and then reaches the vibration that produces in the elimination fan; The fan Noise and vibration that produces and the effect of eliminating the noise that produces because of vibration can be eliminated whereby and assembly cost can be reduced simultaneously.
Particularly, the utility model provides a kind of fan noise and vibration elimination system, and it is applied to a fan, and this system comprises at least:
One acoustic wave is arranged in the described fan, receives the noise of this fan and produces a sound wave detection signal;
One vibration sensor is arranged in the described fan, detects the vibration of this fan and produces a vibration detection signal;
One computing unit is electrically connected described acoustic wave and vibration sensor and receives described sound wave detection signal and vibration detection signal, and produces sound wave counteracting signal and a vibration counteracting signal;
One sound generator is electrically connected described computing unit and receives described sound wave and offsets signal to produce the reverse sound wave of eliminating noise in the fan; And
One vibration generator is electrically connected described computing unit and receives described vibration and offsets signal to produce the reversal of vibrations frequency of eliminating the fan internal vibration.
Preferably, described fan noise and vibration elimination system also include a Speed sensing device, and the rotating speed of this Speed sensing device detecting fan also produces a rotating speed detection signal.
Preferably, described fan noise and vibration elimination system have a setup unit in the described computing unit.
Preferably, described fan noise and vibration elimination system, described setup unit is set with a plurality of rotating speed data according to the fan different rotating speeds, the Noise and vibration that the corresponding different rotating speeds of described rotating speed data produces, and this setup unit is sent the rotating speed data of its rotating speed according to described rotating speed detection signal, and sends corresponding sound wave by this computing unit and offset signal and described vibration counteracting signal.
Preferably, described fan noise and vibration elimination system, described acoustic wave is MIC microphone.
Preferably, described fan noise and vibration elimination system, described vibration sensor is for accelerating rule.
Preferably, described fan noise and vibration elimination system, described sound generator is loudspeaker.
Preferably, described fan noise and vibration elimination system, be provided with a control circuit in the described fan, and this acoustic wave, vibration sensor, computing unit, sound generator and vibration generator are electrically connected described control circuit and are arranged on this control circuit.
So the utlity model has following advantages:
1. can effectively abate the noise;
2. can effectively eliminate the noise that vibrates with because of generation of vibration;
3. reduction cost.
Description of drawings
Fig. 1 is the utility model the first embodiment's block schematic diagram;
Fig. 2 is the utility model the second embodiment's block schematic diagram.
The primary component symbol description
Fan noise and vibration elimination system 1
Embodiment
Characteristic on above-mentioned purpose of the present utility model and structure thereof and the function will be explained according to appended graphic preferred embodiment.
See also shown in Figure 1, it is the first embodiment's of the utility model fan noise and vibration elimination system block schematic diagram, this system applies is in the control circuit (not shown) of a fan, and this system includes an acoustic wave 11, a vibration sensor 12, a computing unit 13, a sound generator 14 and a vibration generator 15 at least;
Wherein this acoustic wave 11 can be MIC microphone, and this acoustic wave 11 is relatively arranged on noise source position in the fan, to receive sound wave that its noise forms when its fan running and the noise source generation noise and to produce a sound wave detection signal via its sound wave; And this vibration sensor 12 can be and accelerates rule, and this vibration sensor 12 is relatively arranged on and produces the vibration source position place in the fan, to receive its vibration frequency and to produce a vibration detection signal via its vibration frequency when its fan running and vibration source produce vibration.
Described computing unit 13 is electrically connected described acoustic wave 11 and vibration sensor 12 and receives described sound wave detection signal and vibration detection signal, and respectively described noise sound wave and vibration frequency computing is produced sound wave counteracting signal and a vibration counteracting signal; This computing unit 13 is electrically connected described sound generator 14 and described vibration generator 15 in addition simultaneously again, this sound generator 14 receives described sound wave and offsets signal and produce the reverse sound wave that can eliminate noise in the fan, reaches the effect that suppresses noise so that the reverse sound wave that the noise sound wave that noise source produces and sound generator 14 send is offset each other; And this vibration generator 15 receives described vibration counteracting signal and produces the reversal of vibrations frequency that can eliminate fan internal vibration frequency, so that offsetting each other, the reversal of vibrations frequency that the vibration frequency that vibration source produces and vibration generator 15 send reaches the effect that suppresses vibration, whereby, its fan noise and vibration elimination system 1 can eliminate Noise and vibration that fan produces and eliminate the effect that produces noise because of vibration, and can reach the effect that reduces assembly cost simultaneously.
See also shown in Figure 2, it is the second embodiment's of the utility model fan noise and vibration elimination system block schematic diagram, its overall structure and element connection relationship are roughly identical with last embodiment, this in addition superfluous telling mutually exist together, comparing in the present embodiment last embodiment does not exist together and can include a Speed sensing device 16 for described fan noise and vibration elimination system 1, this Speed sensing device 16 is electrically connected described computing unit 13 and can detects the rotating speed of this fan and produce a rotating speed detection signal, and can have a setup unit 131 corresponding its Speed sensing devices 16 in this computing unit 13, because described fan in when running during in different rotating speeds its noise source also different from the Noise and vibration that vibration source produces, therefore its setup unit 131 is defined as a plurality of rotating speed data according to the Noise and vibration that fan its noise source and vibration source when the different rotating speeds produce first, the simultaneously corresponding described sound wave of described rotating speed data is offset signal and is offset signal with vibration, with when its fan operates, its Speed sensing device 16 its rotation speeds of the fan of detecting also produce described rotating speed detection signal to computing unit 13, and this computing unit 13 receives described rotating speed detection signal and make setup unit 131 send corresponding rotating speed data, and this computing unit 13 then can be sent corresponding sound wave counteracting signal by its rotating speed data and offset signal with vibration; Whereby, this fan noise and vibration elimination system 1 can eliminate Noise and vibration that fan produces and eliminate the effect that produces noise because of vibration, and can reach the effect that reduces assembly cost simultaneously.
Although the utility model discloses as above with mode of execution; so it is not to limit the utility model; anyly be familiar with this skill person; within not breaking away from spirit and scope of the present utility model; when can being used for a variety of modifications and variations, therefore protection domain of the present utility model when look accompanying claim the person of deciding be as the criterion.
Claims (8)
1. a fan noise and vibration elimination system, it is applied to a fan, it is characterized in that, and this system comprises at least:
One acoustic wave is arranged in the described fan, receives the noise of this fan and produces a sound wave detection signal;
One vibration sensor is arranged in the described fan, detects the vibration of this fan and produces a vibration detection signal;
One computing unit is electrically connected described acoustic wave and vibration sensor and receives described sound wave detection signal and vibration detection signal, and produces sound wave counteracting signal and a vibration counteracting signal;
One sound generator is electrically connected described computing unit and receives described sound wave and offsets signal to produce the reverse sound wave of eliminating noise in the fan; And
One vibration generator is electrically connected described computing unit and receives described vibration and offsets signal to produce the reversal of vibrations frequency of eliminating the fan internal vibration.
2. fan noise as claimed in claim 1 and vibration elimination system is characterized in that, also include a Speed sensing device, and the rotating speed of this Speed sensing device detecting fan also produces a rotating speed detection signal.
3. fan noise as claimed in claim 2 and vibration elimination system is characterized in that having a setup unit in the described computing unit.
4. fan noise as claimed in claim 3 and vibration elimination system, it is characterized in that, described setup unit is set with a plurality of rotating speed data according to the fan different rotating speeds, the Noise and vibration that the corresponding different rotating speeds of described rotating speed data produces, and this setup unit is sent the rotating speed data of its rotating speed according to described rotating speed detection signal, and sends corresponding sound wave by this computing unit and offset signal and described vibration counteracting signal.
5. fan noise as claimed in claim 1 and vibration elimination system is characterized in that described acoustic wave is MIC microphone.
6. fan noise as claimed in claim 1 and vibration elimination system is characterized in that described vibration sensor is for accelerating rule.
7. fan noise as claimed in claim 1 and vibration elimination system is characterized in that described sound generator is loudspeaker.
8. fan noise as claimed in claim 1 and vibration elimination system, it is characterized in that, be provided with a control circuit in the described fan, and this acoustic wave, vibration sensor, computing unit, sound generator and vibration generator are electrically connected described control circuit and are arranged on this control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220631594 CN202914408U (en) | 2012-11-26 | 2012-11-26 | Fan noise and vibration elimination system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220631594 CN202914408U (en) | 2012-11-26 | 2012-11-26 | Fan noise and vibration elimination system |
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| Publication Number | Publication Date |
|---|---|
| CN202914408U true CN202914408U (en) | 2013-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220631594 Expired - Fee Related CN202914408U (en) | 2012-11-26 | 2012-11-26 | Fan noise and vibration elimination system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244465A (en) * | 2013-05-03 | 2013-08-14 | 湖北文理学院 | Active noise control system for fan of portable computer |
| CN103807220A (en) * | 2013-12-24 | 2014-05-21 | 国家电网公司 | Double-rotation active fan noise reduction assembly |
| CN103836006A (en) * | 2012-11-26 | 2014-06-04 | 深圳兴奇宏科技有限公司 | Noise and vibration elimination system of fan |
| CN104712589A (en) * | 2013-12-13 | 2015-06-17 | 鸿富锦精密电子(天津)有限公司 | Fan |
| CN105298933A (en) * | 2015-09-11 | 2016-02-03 | 中国船舶重工集团公司第七0九研究所 | Active noise control device for axial fan |
| CN105526196A (en) * | 2015-12-03 | 2016-04-27 | 苏州永和诚风机工业有限公司 | Noise reduction fan |
| CN108227877A (en) * | 2018-01-02 | 2018-06-29 | 联想(北京)有限公司 | A kind of radiator and electronic equipment |
| CN110710364A (en) * | 2019-11-22 | 2020-01-21 | 黑龙江八一农垦大学 | Automatic shock attenuation seeder |
-
2012
- 2012-11-26 CN CN 201220631594 patent/CN202914408U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836006A (en) * | 2012-11-26 | 2014-06-04 | 深圳兴奇宏科技有限公司 | Noise and vibration elimination system of fan |
| CN103244465A (en) * | 2013-05-03 | 2013-08-14 | 湖北文理学院 | Active noise control system for fan of portable computer |
| CN103244465B (en) * | 2013-05-03 | 2015-07-29 | 湖北文理学院 | For the active fans noise control system of portable computer |
| CN104712589A (en) * | 2013-12-13 | 2015-06-17 | 鸿富锦精密电子(天津)有限公司 | Fan |
| CN103807220A (en) * | 2013-12-24 | 2014-05-21 | 国家电网公司 | Double-rotation active fan noise reduction assembly |
| CN103807220B (en) * | 2013-12-24 | 2016-03-23 | 国家电网公司 | Bispin active blower fan noise reduction assembly |
| CN105298933A (en) * | 2015-09-11 | 2016-02-03 | 中国船舶重工集团公司第七0九研究所 | Active noise control device for axial fan |
| CN105298933B (en) * | 2015-09-11 | 2017-10-31 | 中国船舶重工集团公司第七0九研究所 | A kind of aerofoil fan active noise control device |
| CN105526196A (en) * | 2015-12-03 | 2016-04-27 | 苏州永和诚风机工业有限公司 | Noise reduction fan |
| CN108227877A (en) * | 2018-01-02 | 2018-06-29 | 联想(北京)有限公司 | A kind of radiator and electronic equipment |
| CN110710364A (en) * | 2019-11-22 | 2020-01-21 | 黑龙江八一农垦大学 | Automatic shock attenuation seeder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130501 Termination date: 20171126 |