CN102705268A - Noise reduction fan - Google Patents
Noise reduction fan Download PDFInfo
- Publication number
- CN102705268A CN102705268A CN2012101729804A CN201210172980A CN102705268A CN 102705268 A CN102705268 A CN 102705268A CN 2012101729804 A CN2012101729804 A CN 2012101729804A CN 201210172980 A CN201210172980 A CN 201210172980A CN 102705268 A CN102705268 A CN 102705268A
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- sound wave
- electric signal
- noise reduction
- fan
- flabellum
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Abstract
The invention discloses a noise reduction fan, comprising fan blades and a driving motor, wherein a plurality of sound wave sending devices for converting noises into a first electric signal are arranged on the periphery of the fan blade; the sound wave sending devices are symmetrically distributed on the periphery of the fan blade and are arranged towards the fan blade; the sound wave sending devices are connected with a processing chip; the processing chip is used for converting the first electric signal into a second electric signal which is the same as the first electric signal in size and is different from the first electric signal in a phase position and outputting the second electric signal; an output end of the processing chip is connected with a sound wave generator for converting the second electric signal into sound waves; the sound wave generator and the sound wave sending devices are arranged on the same position; and the sound wave generator is arranged towards the fan blade. According to the noise reduction fan disclosed by the invention, a principle of mutually interfering and cancelling opposite waves is utilized, the noises are reduced and the effect of reducing the noises is achieved.
Description
Technical field
The present invention relates to a kind of fan, particularly a kind of fan that has silencer.
Background technique
At present, fan is the household electric appliance that frequently touch in people's daily life, and fan can directly apply to and be that people blowing, fan can also be applied on the sink of computer or on the extraction fan of range hood.But more existing fans are because power is bigger, and like the extraction fan on the range hood, noise is bigger during work, influences people's life.
Summary of the invention
In order to solve the problems of the technologies described above, the object of the present invention is to provide a kind of fan that has silencer, can effectively reduce fan noise.
The technological scheme that the present invention adopted mainly is:
A kind of noise reduction fan; Comprise flabellum, drive motor; Said flabellum periphery is provided with a plurality of sound wave induction installations that are used for noise is converted into first electrical signal, and said sound wave induction installation is symmetrically distributed in around the flabellum and towards flabellum, and said sound wave induction installation is connected with process chip; Process chip is converted into second opposite electrical signal of equal and opposite in direction, phase place and output with first electrical signal; Said process chip output terminal is connected with the sound generator that is used for second electrical signal is converted into sound wave, and said sound generator and sound wave induction installation are arranged on the same position, and said sound generator is towards flabellum.
As the further improvement of technique scheme, said sound wave induction installation is a mini microphone.
As the further improvement of technique scheme, said sound generator is a loudspeaker.
The invention has the beneficial effects as follows: noise reduction fan of the present invention is equipped with sound wave induction installation and sound generator at the flabellum periphery; Collect the noise that flabellum sends and be converted into the opposite sound wave of equal and opposite in direction waveform and send; Utilize opposite ripple to interfere with each other the principle that disappears mutually; Reduce noise, reach the effect of noise reduction.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is done further detailed explanation.
Fig. 1 is that the present invention is applied in the structural representation on the range hood;
Fig. 2 is a theory diagram of the present invention.
Embodiment
With reference to Fig. 1, Fig. 2; A kind of noise reduction fan embodiment provided by the invention; Comprise the flabellum 1, the drive motor that are installed on the range hood; Flabellum 1 periphery is provided with a plurality of sound wave induction installations 2 that are used for noise is converted into first electrical signal, and said sound wave induction installation 2 is symmetrically distributed in around the flabellum 1 and towards flabellum 1, and said sound wave induction installation 2 is connected with process chip 3; Process chip 3 is converted into second opposite electrical signal of equal and opposite in direction, phase place and output with first electrical signal; Said process chip 3 output terminals are connected with the sound generator 4 that is used for second electrical signal is converted into sound wave, and said sound generator 4 is arranged on the same position with sound wave induction installation 2, and sound generator 4 is towards flabellum.Preferably, sound wave induction installation 2 is a mini microphone, like mobile phone microphone; Sound generator 4 is a loudspeaker.
Noise reduction fan of the present invention is when work, and the sound wave induction installation 2 that flabellum 1 periphery is installed is collected flabellum 1 and rotated the noise that sends and be converted into first electrical signal, and this first electrical signal is transported to process chip 3; Analyze through process chip 3; And converting the second opposite electrical signal of equal and opposite in direction phase place into, second electrical signal outputs to sound generator 4 through the output terminal of process chip 3, by sound generator 4 this second electrical signal is converted into sound wave and emits; And the noise sound wave equal and opposite in direction of this sound wave and flabellum 1 generation; Waveform phase is opposite, and according to the wave interference principle, the interference between the ripple of phase anti-waveform can be cancelled each other; Thereby the reduction noise reaches the effect of noise reduction.
The above is merely preferential mode of execution of the present invention, and the present invention is not limited to be applied on the range hood, as long as realize that with basic identical means the technological scheme of the object of the invention all belongs within protection scope of the present invention.
Claims (3)
1. noise reduction fan; Comprise flabellum (1), drive motor; It is characterized in that: said flabellum (1) periphery is provided with a plurality of sound wave induction installations (2) that are used for noise is converted into first electrical signal; Said sound wave induction installation (2) is symmetrically distributed in flabellum (1) all around and towards flabellum (1); Said sound wave induction installation (2) is connected with process chip (3), and process chip (3) is converted into second opposite electrical signal of equal and opposite in direction, phase place and output with first electrical signal, and said process chip (3) output terminal is connected with the sound generator (4) that is used for second electrical signal is converted into sound wave; Said sound generator (4) is arranged on the same position with sound wave induction installation (2), and said sound generator (4) is towards flabellum (1).
2. a kind of noise reduction fan according to claim 1 is characterized in that: said sound wave induction installation (2) is a mini microphone.
3. a kind of noise reduction fan according to claim 1 is characterized in that: said sound generator (4) is a loudspeaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101729804A CN102705268A (en) | 2012-05-29 | 2012-05-29 | Noise reduction fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101729804A CN102705268A (en) | 2012-05-29 | 2012-05-29 | Noise reduction fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102705268A true CN102705268A (en) | 2012-10-03 |
Family
ID=46898260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101729804A Pending CN102705268A (en) | 2012-05-29 | 2012-05-29 | Noise reduction fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102705268A (en) |
Cited By (3)
| 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 |
| CN105351225A (en) * | 2015-11-19 | 2016-02-24 | 华蓥市双河第二初级中学 | Low-noise fan for classroom |
| CN106194793A (en) * | 2016-08-05 | 2016-12-07 | 安庆市沁之源电器有限公司 | A kind of quiet fan |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101398696A (en) * | 2007-09-28 | 2009-04-01 | 佛山市顺德区顺达电脑厂有限公司 | Sound deadening system |
| CN201292994Y (en) * | 2008-11-12 | 2009-08-19 | 元山科技工业股份有限公司 | Low noise radiator fan |
| CN102374202A (en) * | 2010-08-27 | 2012-03-14 | 海尔集团公司 | Noiseless blade-free fan |
| CN202673791U (en) * | 2012-05-29 | 2013-01-16 | 张秀英 | Muffling fan |
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2012
- 2012-05-29 CN CN2012101729804A patent/CN102705268A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101398696A (en) * | 2007-09-28 | 2009-04-01 | 佛山市顺德区顺达电脑厂有限公司 | Sound deadening system |
| CN201292994Y (en) * | 2008-11-12 | 2009-08-19 | 元山科技工业股份有限公司 | Low noise radiator fan |
| CN102374202A (en) * | 2010-08-27 | 2012-03-14 | 海尔集团公司 | Noiseless blade-free fan |
| CN202673791U (en) * | 2012-05-29 | 2013-01-16 | 张秀英 | Muffling fan |
Cited By (4)
| 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 |
| CN103244465B (en) * | 2013-05-03 | 2015-07-29 | 湖北文理学院 | For the active fans noise control system of portable computer |
| CN105351225A (en) * | 2015-11-19 | 2016-02-24 | 华蓥市双河第二初级中学 | Low-noise fan for classroom |
| CN106194793A (en) * | 2016-08-05 | 2016-12-07 | 安庆市沁之源电器有限公司 | A kind of quiet fan |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20121003 |