CN206847038U - A kind of silencing apparatus for air purifier - Google Patents
A kind of silencing apparatus for air purifier Download PDFInfo
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- CN206847038U CN206847038U CN201720736946.3U CN201720736946U CN206847038U CN 206847038 U CN206847038 U CN 206847038U CN 201720736946 U CN201720736946 U CN 201720736946U CN 206847038 U CN206847038 U CN 206847038U
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- silencing apparatus
- air purifier
- perforated plate
- sound
- sponge
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Abstract
The utility model proposes a kind of silencing apparatus for air purifier, made an uproar problem to solve the wind of the air outlet of air purifier, the silencing apparatus includes reactive muffling device and resistance noise reduction device.The reactive muffling device is perforated plate and connection housing, and the resistance noise reduction device is sound absorption sponge, and sound absorption sponge is positioned over perforated plate and is connected in the resonator of housing composition, forms complex muffler.The silencer causes noise sound wave that resonance occurs in perforated plate pore-throat and friction occurs with the pore for the sponge that absorbs sound and is consumed.The utility model proposes silencing apparatus air purifier wind make an uproar with good noise reduction and do not influence the air circulation of air outlet.
Description
Technical field
It the utility model is related to noise elimination technique field, more particularly to a kind of silencing apparatus for air purifier.
Background technology
Haze is the air pollutants that the public is concerned about the most in recent years, and it has seriously endangered the health of its people.One side
Face, government administer haze by various policies and measure；On the other hand, the common people also take effective means to reduce haze harm,
Such as the anti-haze mouth mask in outdoor wearing specialty, interior use air purifier.Air purifier turns into many families and list
The indispensable electrical equipment in position.Air purifier is that contaminated air is pumped into clarifier by blower fan, by purifier heel row
Go out clean air, although this process has purified air, the problem of but bringing noise, and power is bigger, noise problem
It is more serious.Huge injury can all be caused to people's physical and mental health by being in for a long time under strong noise environment.
To eliminate noise, patent CN104848432A is directed to a kind of active noise reducing device of air-purifier designs, the dress
Putting will to hardware including microphone, loudspeaker and the adaptive feedforward wave filter with FIR structures, this active denoising method
Ask high, realize difficult and production cost somewhat expensive, it is poor for the eradicating efficacy of high-frequency noise.
Utility model content
To solve the noise problem of air purifier, a kind of silencing apparatus is designed, the silencing apparatus is low to hardware requirement, easily
In realization, and production cost is relatively inexpensive, has good noise reduction to high-frequency noise caused by blower fan.
The utility model proposes a kind of silencing apparatus of air purifier, the silencing apparatus is plank frame, including resistance
Silencing apparatus and resistance noise reduction device, the reactive muffling device are perforated plate and connection housing, and the resistance noise reduction device is
Absorb sound sponge, and sound absorption sponge is positioned over perforated plate and is connected in the resonator of housing composition, forms complex muffler, the noise elimination
Device causes noise sound wave that resonance occurs in perforated plate pore-throat and friction occurs with the pore for the sponge that absorbs sound and is consumed.
Further, perforated plate is to be formed on steel plate by beating circular port successively at equal intervals.
Further, a diameter of millimeter of rank of circular port on perforated plate.
Further, sound absorbent foam mass is made up of two kinds of unlike materials sound absorption sponges.
Further, two kinds of sound absorption sponges are close to perforated plate and are sequentially placed in cavity.
Further, it will be close to the sound absorption sponge of cavity wall using viscose glue and cavity wall cling fixation.
Further, the sponge gross thickness that absorbs sound is 20-30mm.
Advantage is the present invention compared with prior art：
The utility model proposes silencing apparatus noise is eliminated with the resistive compounded methods that are combined using resistance, increase
The frequency range of de-noising, while the noise of different frequency range is further eliminated using the sound-absorbing material of two kinds of unlike materials, enhance and make an uproar
The effect that sound eliminates；And this silencing apparatus is simple in construction, it is easy to accomplish, cost is cheap, easily batch production manufacture.
Brief description of the drawings
Fig. 1 is that a kind of air purifier of the utility model installs silencing apparatus structure chart；
Fig. 2 is silencing apparatus pie graph；
Fig. 3 is perforated plate sectional view.
Embodiment
To further understand the technological means and effect that the utility model is taken, below in conjunction with drawings and examples to this reality
Elaborated with new.
Refering to Fig. 1, the present embodiment provides a kind of silencing apparatus for tower air cleaner, and silencing apparatus 1 passes through branch
Hack lever 2 is arranged on the air outlet position of air purifier 3, and refering to Fig. 2, silencing apparatus includes perforated plate 11, the first suction respectively
Sound cotton 12, second of sound absorption cotton 13, connection housing 14 and viscose glue 15.The air outlet of perforated plate face air purifier, connection
Housing forms a rectangular enclosure with perforated plate, in cavity, is close to perforated plate and lays the first acoustical cotton, be close to first
Kind of acoustical cotton lays second of acoustical cotton, and second of acoustical cotton is close to cavity back wall, the gross thickness of two kinds of sound absorption cottons and cavity
Consistency of thickness, second of acoustical cotton is fixed with cavity back wall using viscose glue.
First, the high-frequency absorption performance of perforated plate thickness effect sound absorption structure, thickness increase, resonant frequency is to low frequency direction
It is mobile；It is 1mm to determine the present embodiment middle punch plate thickness；Secondly, the frequency range of perforated plate pore size influences sound absorption peak value, aperture become
Small, sound absorption peak value frequency band determines to determine in the present embodiment to high-frequency mobile, the increase of high frequency sound absorbing capabilities, and frequency bandwidth increase
Aperture is 4.5mm；Again, punching rate is bigger, and high frequency sound absorbing capabilities are better, pore size and the timing of thickness of slab one when perforated plate,
Resonant frequency can be changed by changing the size of punching rate, for absorbing the sound absorbent perforated structure based on low and medium frequency noise
Punching rate should not be too big, it is 6% that determine the present embodiment middle punch plate rate；Due to the acoustic resistance very little of perforated plate itself, this knot
The wide band sound absorption of structure is narrower, only tens hertz to hundreds of hertz, to improve the sound absorbing capabilities and wide band sound absorption of perforated plate, this reality
Example is applied using two kinds of sound-absorbing porous materials are filled in the cavities to solve the above problems, above two sound-absorbing material is respectively trimerization
Cyanamide cotton and mineral wool, and the gross thickness of two kinds of acoustical cottons is 30mm.
In the present embodiment, the noise of air purifier is mainly as caused by blower fan extracts pollution air, noise sound wave
Exported and discharged by clarifier, sub-fraction noise is propagate directly to around clarifier, causes noise pollution, most of noise leads to
The aperture for crossing perforated plate enters cavity and excites air vibration in cavity, if frequency of sound wave is identical with the structure resonant frequency,
Air in cavity just resonates, and air column is of reciprocating vibration at perforated plate pore-throat, and speed, amplitude reach maximum, friction with
Damping is also maximum, and now, acoustic energy is farthest converted into heat energy；The part sound wave for not being converted into heat energy enters the first
Acoustical cotton, the aperture friction with acoustical cotton, acoustic energy are further converted into heat energy and are consumed, and are not converted into the remaining sound wave of heat energy
Into second of acoustical cotton, the aperture friction with acoustical cotton, acoustic energy is further converted into heat energy and is consumed.Two kinds of different sound absorptions
The noise frequency range of its absorption of cotton is different, broadens sound absorption frequency range.
Above example is provided just for the sake of description the purpose of this utility model, and is not intended to limit of the present utility model
Scope.The scope of the utility model is defined by the following claims.Do not depart from spirit and principle of the present utility model and make
Various equivalent alterations and modifications, it all should cover within the scope of the utility model.
Claims (7)
- A kind of 1. silencing apparatus for air purifier, it is characterised in that：The silencing apparatus is plank frame, including resistance disappears Acoustic device and resistance noise reduction device, the reactive muffling device are perforated plate and connection housing, and the resistance noise reduction device is suction Sound sponge, sound absorption sponge are positioned over perforated plate and are connected in the resonator of housing composition, form complex muffler, the silencer So that resonance occurs in perforated plate pore-throat and friction occurs with the pore for the sponge that absorbs sound and is consumed for noise sound wave.
- A kind of 2. silencing apparatus for air purifier as claimed in claim 1, it is characterised in that：Perforated plate is in steel plate On form by beating circular port successively at equal intervals.
- A kind of 3. silencing apparatus for air purifier as claimed in claim 2, it is characterised in that：Circle on perforated plate Bore dia is bold and unconstrained meter level.
- A kind of 4. silencing apparatus for air purifier as claimed in claim 1, it is characterised in that：Sound absorbent foam mass is by two Kind unlike material sound absorption sponge composition.
- A kind of 5. silencing apparatus for air purifier as claimed in claim 4, it is characterised in that：Two kinds of sound absorption sponges are tight Patch perforated plate is sequentially placed in cavity.
- A kind of 6. silencing apparatus for air purifier as claimed in claim 4, it is characterised in that：It will be close to using viscose glue The sound absorption sponge of cavity wall clings fixation with cavity wall.
- A kind of 7. silencing apparatus for air purifier as claimed in claim 4, it is characterised in that：Absorb sound sponge gross thickness For 20-30mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720736946.3U CN206847038U (en) | 2017-06-23 | 2017-06-23 | A kind of silencing apparatus for air purifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720736946.3U CN206847038U (en) | 2017-06-23 | 2017-06-23 | A kind of silencing apparatus for air purifier |
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| Publication Number | Publication Date |
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| CN206847038U true CN206847038U (en) | 2018-01-05 |
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| CN201720736946.3U Active CN206847038U (en) | 2017-06-23 | 2017-06-23 | A kind of silencing apparatus for air purifier |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108344141A (en) * | 2018-03-26 | 2018-07-31 | 北京零微科技有限公司 | A kind of noise reduction wind-guiding column of air purifier |
| CN108426321A (en) * | 2018-03-26 | 2018-08-21 | 北京零微科技有限公司 | A kind of novel more wind-guiding column noise reduction air purifiers |
| CN109520044A (en) * | 2018-12-19 | 2019-03-26 | 馨科环保科技（上海）有限公司 | A kind of sqouynd absorption lowering noise set composite of air purifier |
| CN113958496A (en) * | 2020-07-21 | 2022-01-21 | 佛山市美的清湖净水设备有限公司 | Pump assembly structure and have its water purification unit |
-
2017
- 2017-06-23 CN CN201720736946.3U patent/CN206847038U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108344141A (en) * | 2018-03-26 | 2018-07-31 | 北京零微科技有限公司 | A kind of noise reduction wind-guiding column of air purifier |
| CN108426321A (en) * | 2018-03-26 | 2018-08-21 | 北京零微科技有限公司 | A kind of novel more wind-guiding column noise reduction air purifiers |
| CN108426321B (en) * | 2018-03-26 | 2024-03-12 | 北京零微科技有限公司 | Multi-air-guide column noise reduction air purifier |
| CN109520044A (en) * | 2018-12-19 | 2019-03-26 | 馨科环保科技（上海）有限公司 | A kind of sqouynd absorption lowering noise set composite of air purifier |
| CN109520044B (en) * | 2018-12-19 | 2020-11-13 | 馨科环保科技（上海）有限公司 | Sound absorption and noise reduction composite device for air purifier |
| CN113958496A (en) * | 2020-07-21 | 2022-01-21 | 佛山市美的清湖净水设备有限公司 | Pump assembly structure and have its water purification unit |
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