CN202673791U - Muffling fan - Google Patents
Muffling fan Download PDFInfo
- Publication number
- CN202673791U CN202673791U CN 201220250146 CN201220250146U CN202673791U CN 202673791 U CN202673791 U CN 202673791U CN 201220250146 CN201220250146 CN 201220250146 CN 201220250146 U CN201220250146 U CN 201220250146U CN 202673791 U CN202673791 U CN 202673791U
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- sound wave
- fan
- flabellum
- sound
- electric signals
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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The utility model discloses a muffling fan which comprises fan blades and a driving motor. A plurality of sound wave sensors for converting noise into first electric signals are arranged on the periphery of the fan blades, the sound wave sensors are distributed around the fan blades symmetrically and face the fan blades and are connected with processing chips which convert the first electric signals into second electric signals equal in size and opposite in phase to the first electric signals and output the second electric signals, output ends of the processing chips are connected with sound wave generators for converting the second electric signals into sound wave, the sound wave generators and the sound wave sensors are arranged at the same position, and the sound wave generators face the fan blades. According to the principle of mutual interference canceling of opposite waves, noise is reduced, and muffling is achieved.
Description
Technical field
The utility model relates to a kind of fan, particularly a kind of fan with 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 larger, and such as the extraction fan on the range hood, noise is larger during work, affects people's life.
Summary of the invention
In order to solve the problems of the technologies described above, the purpose of this utility model is to provide a kind of fan with silencer, can effectively reduce fan noise.
The technological scheme that the utility model adopts mainly is:
A kind of sound deadening fan, comprise flabellum, drive motor, described flabellum periphery is provided with a plurality of sound wave induction installations for noise being converted into the first electrical signal, described sound wave induction installation is symmetrically distributed in around the flabellum and towards flabellum, described sound wave induction installation is connected with process chip, process chip is converted into equal and opposite in direction with the first electrical signal, the second electrical signal of single spin-echo and output, described process chip output terminal is connected with for the sound generator that the second electrical signal is converted into sound wave, described sound generator and sound wave induction installation are arranged on the same position, and described sound generator is towards flabellum.
As further improvement in the technical proposal, described sound wave induction installation is mini microphone.
As further improvement in the technical proposal, described sound generator is loudspeaker.
The beneficial effects of the utility model are: sound deadening fan of the present utility model 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 the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is that the utility model is applied in the structural representation on the range hood;
Fig. 2 is theory diagram of the present utility model.
Embodiment
With reference to Fig. 1, Fig. 2, a kind of sound deadening fan embodiment that the utility model provides, comprise the flabellum 1 that is installed on the range hood, drive motor, flabellum 1 periphery is provided with a plurality of sound wave induction installations 2 for noise being converted into the first electrical signal, described sound wave induction installation 2 is symmetrically distributed in around the flabellum 1 and towards flabellum 1, described sound wave induction installation 2 is connected with process chip 3, process chip 3 is converted into equal and opposite in direction with the first electrical signal, the second electrical signal of single spin-echo and output, described process chip 3 output terminals are connected with for the sound generator 4 that the second electrical signal is converted into sound wave, described 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 mini microphone, such as mobile phone microphone; Sound generator 4 is loudspeaker.
Sound deadening fan of the present utility model is when work, the sound wave induction installation 2 that flabellum 1 periphery is installed is collected flabellum 1 and is rotated the noise that sends and be converted into the first electrical signal, this first electrical signal is transported to process chip 3, analyze by process chip 3, and be converted to the second electrical signal of equal and opposite in direction single spin-echo, the second electrical signal outputs to sound generator 4 by the output terminal of process chip 3, by sound generator 4 this second electrical signal being converted into sound wave emits, and the noise sound wave equal and opposite in direction of this sound wave and flabellum 1 generation, waveform phase is opposite, principle of interference according to ripple, 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 only is preferential mode of execution of the present utility model, and the utility model is not limited to be applied on the range hood, as long as realize that with basic identical means the technological scheme of the utility model purpose all belongs within the protection domain of the present utility model.
Claims (3)
1. sound deadening fan, comprise flabellum (1), drive motor, it is characterized in that: described flabellum (1) periphery is provided with a plurality of sound wave induction installations (2) for noise being converted into the first electrical signal, described sound wave induction installation (2) is symmetrically distributed in flabellum (1) all around and towards flabellum (1), described sound wave induction installation (2) is connected with process chip (3), process chip (3) is converted into equal and opposite in direction with the first electrical signal, the second electrical signal of single spin-echo and output, described process chip (3) output terminal is connected with for the sound generator (4) that the second electrical signal is converted into sound wave, described sound generator (4) is arranged on the same position with sound wave induction installation (2), and described sound generator (4) is towards flabellum (1).
2. a kind of sound deadening fan according to claim 1, it is characterized in that: described sound wave induction installation (2) is mini microphone.
3. a kind of sound deadening fan according to claim 1, it is characterized in that: described sound generator (4) is loudspeaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220250146 CN202673791U (en) | 2012-05-29 | 2012-05-29 | Muffling fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220250146 CN202673791U (en) | 2012-05-29 | 2012-05-29 | Muffling fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202673791U true CN202673791U (en) | 2013-01-16 |
Family
ID=47494698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220250146 Expired - Fee Related CN202673791U (en) | 2012-05-29 | 2012-05-29 | Muffling fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202673791U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705268A (en) * | 2012-05-29 | 2012-10-03 | 张秀英 | Noise reduction fan |
| CN104712589A (en) * | 2013-12-13 | 2015-06-17 | 鸿富锦精密电子(天津)有限公司 | Fan |
| CN104976159A (en) * | 2014-04-11 | 2015-10-14 | 中强光电股份有限公司 | Air blower and eddy noise reduction method |
| EP3447761A4 (en) * | 2016-04-19 | 2019-12-18 | Sony Interactive Entertainment Inc. | Drive system and electric device provided with same |
-
2012
- 2012-05-29 CN CN 201220250146 patent/CN202673791U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705268A (en) * | 2012-05-29 | 2012-10-03 | 张秀英 | Noise reduction fan |
| CN104712589A (en) * | 2013-12-13 | 2015-06-17 | 鸿富锦精密电子(天津)有限公司 | Fan |
| CN104976159A (en) * | 2014-04-11 | 2015-10-14 | 中强光电股份有限公司 | Air blower and eddy noise reduction method |
| US9790961B2 (en) | 2014-04-11 | 2017-10-17 | Coretronic Corporation | Blower and method for decreasing eddy noise |
| EP3447761A4 (en) * | 2016-04-19 | 2019-12-18 | Sony Interactive Entertainment Inc. | Drive system and electric device provided with same |
| US10950218B2 (en) | 2016-04-19 | 2021-03-16 | Sony Interactive Entertainment Inc. | Drive system and electric apparatus provided therewith |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20140529 |