CN2361891Y - Fan silencer - Google Patents
Fan silencer Download PDFInfo
- Publication number
- CN2361891Y CN2361891Y CN 98225233 CN98225233U CN2361891Y CN 2361891 Y CN2361891 Y CN 2361891Y CN 98225233 CN98225233 CN 98225233 CN 98225233 U CN98225233 U CN 98225233U CN 2361891 Y CN2361891 Y CN 2361891Y
- Authority
- CN
- China
- Prior art keywords
- sound absorption
- fan
- noise
- blower fan
- plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000003584 silencer Effects 0.000 title abstract 2
- 238000010521 absorption reaction Methods 0.000 claims abstract description 15
- 229920000742 Cotton Polymers 0.000 claims abstract description 10
- 239000004744 fabric Substances 0.000 claims abstract description 6
- 230000030279 gene silencing Effects 0.000 claims description 12
- 239000011521 glass Substances 0.000 claims description 5
- 238000009423 ventilation Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 3
- 230000008030 elimination Effects 0.000 abstract description 2
- 238000003379 elimination reaction Methods 0.000 abstract description 2
- 239000003365 glass fiber Substances 0.000 abstract 1
- 230000009102 absorption Effects 0.000 description 10
- 238000004378 air conditioning Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
- Duct Arrangements (AREA)
Abstract
A silencer of a fan belongs to accessories of the fan and mainly comprises a circular outer shell plate 5, an inner wall porous plate 2, sound absorption cotton 4 arranged between the outer shell plate and the inner wall porous plate, glass fiber cloth 3 and the like. During the use, the fan noise is absorbed by the sound absorption cotton through the inner wall perforated plate, realizes the sound absorption noise reduction effect. The utility model relates to a rationally, have good noise elimination performance in the audio frequency within range of broad, can link an organic whole with fan ventilation passageway and form a complete set and use, loss of pressure is less, can reduce 8 ~ 10dB of noise.
Description
The utility model relates to the special-purpose silencing apparatus of a kind of blower fan, belongs to the accessory kit of blower fan.
Blower fan in the existing ventilation equipment generally suppresses the blower fan rotational noise by the optimal design to blower fan pattern and blade shape, realize reducing anti noise, but to the use occasion that ambient noise is had relatively high expectations, the optimal design that relies on blower fan self merely still is difficult to the usage requirement that reaches desirable.
The purpose of this utility model provides a kind of blower fan silencing apparatus that can effectively reduce ambient noise.
The utility model is the blower fan silencing apparatus, mainly comprises the circular housing plate, is fixed in the circular inner wall porous slab in the Shell Plate, places the sound absorption cotton between Shell Plate and the inwall porous slab.During use, the utility model is placed the air duct one or both ends of blower fan and fixing, make it to fuse with the ventilation flue of ventilation system, when blower fan running air-supply, fan noise is realized the sqouynd absorption lowering noise effect by inwall porous slab cotton absorption that absorbed sound.
Also glass cloth can be set between described inwall porous slab and the sound absorption cotton; Also can bury nut in advance underground on the described silencing apparatus both ends of the surface, the flange with blower fan air duct end face when being convenient to install closely is connected.
The utility model is reasonable in design, and good acoustic attenuation performance is arranged in the audio range of broad, and beautiful shape, and is easy for installation, can with the supporting use that fuses of blower ventilation road, the pressure loss is less, is applicable to the noise reduction of mesolow blower fan in ventilation, the air-conditioning system.
Accompanying drawing has provided overall structure of the present utility model and half section schematic representation.
Below in conjunction with embodiment the utility model is further described.
The utility model mainly is made of circular housing plate 5, inwall porous slab 2, sound absorption cotton 4, glass cloth 3 etc., forms an annular sound absorption chamber between Shell Plate and inwall porous slab, spreads ultra-fine sound absorption cotton 4 and glass cloth 3 in the sound absorption chamber successively.And at sound absorption two ends, chamber embedded nut 1, during use, silencing apparatus is installed on air duct air intake one end or air-out one end of blower fan, also can be installed on the air duct two ends simultaneously, the flange of pre-buried nut 1 corresponding air duct, being screwed into nut with screw makes silencing apparatus closely be connected with air duct, make it to fuse with the ventilation flue of ventilation plant, open blower fan, silencing apparatus is when cooperating air-supply with air duct, the noise that takes place when blower fan is turned round is by inwall porous slab 2 and glass cloth 3, and cotton 4 absorptions that absorbed sound realize the noise elimination noise reduction effect.The utility model uses through reality, can reduce noise 8 ~ 10dB.
Claims (3)
1, a kind of blower fan silencing apparatus is characterized in that comprising circular housing plate (5), is fixed in the circular inner wall porous slab (2) in the Shell Plate, places the sound absorption cotton (4) between Shell Plate (5) and the inwall porous slab (2).
2,, it is characterized in that between described inwall porous slab (2) and the sound absorption cotton (4) glass cloth (3) being set also by the described blower fan silencing apparatus of claim 1.
3, by claim 1 or 2 described blower fan silencing apparatuss, it is characterized in that also can burying nut (1) in advance underground on the described silencing apparatus both ends of the surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98225233 CN2361891Y (en) | 1998-09-30 | 1998-09-30 | Fan silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98225233 CN2361891Y (en) | 1998-09-30 | 1998-09-30 | Fan silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2361891Y true CN2361891Y (en) | 2000-02-02 |
Family
ID=33975961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98225233 Expired - Fee Related CN2361891Y (en) | 1998-09-30 | 1998-09-30 | Fan silencer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2361891Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101581322A (en) * | 2008-05-16 | 2009-11-18 | 现代自动车株式会社 | Vibration-absorbing device for blower motors |
| CN102410260A (en) * | 2011-12-14 | 2012-04-11 | 枣庄矿业（集团）有限责任公司滨湖煤矿 | Muffling and noise-reducing device for drawing fan |
| CN102606542A (en) * | 2012-04-23 | 2012-07-25 | 上海理工大学 | Inlet muffling device for small centrifugal fan |
| CN102927062A (en) * | 2012-11-15 | 2013-02-13 | 江苏中联风能机械有限公司 | Layout muffling device for large-sized air cooling fan |
-
1998
- 1998-09-30 CN CN 98225233 patent/CN2361891Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101581322A (en) * | 2008-05-16 | 2009-11-18 | 现代自动车株式会社 | Vibration-absorbing device for blower motors |
| CN102410260A (en) * | 2011-12-14 | 2012-04-11 | 枣庄矿业（集团）有限责任公司滨湖煤矿 | Muffling and noise-reducing device for drawing fan |
| CN102606542A (en) * | 2012-04-23 | 2012-07-25 | 上海理工大学 | Inlet muffling device for small centrifugal fan |
| CN102927062A (en) * | 2012-11-15 | 2013-02-13 | 江苏中联风能机械有限公司 | Layout muffling device for large-sized air cooling fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |