CN2470595Y - Fan silencer - Google Patents
Fan silencer Download PDFInfo
- Publication number
- CN2470595Y CN2470595Y CN 01210845 CN01210845U CN2470595Y CN 2470595 Y CN2470595 Y CN 2470595Y CN 01210845 CN01210845 CN 01210845 CN 01210845 U CN01210845 U CN 01210845U CN 2470595 Y CN2470595 Y CN 2470595Y
- Authority
- CN
- China
- Prior art keywords
- air duct
- wind
- sock
- sleeve
- sound
- 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
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Abstract
A fan sound damper comprises a wind-sock. The pipe orifice section area of the wind-sock is S; a sleeve with axial length L is sleeved on the wind-sock; a sound-absorption layer is arranged between the sleeve and the wind-sock; the wind-sock wall is provided with a plurality of holes. The pipe orifice section area S of the wind-sock, the axial length L of the sleeve, the diameter Phi of the hole on the wind-sock wall and the hole edge distance D has the quantitative relations as that: L 2 is equal to 16 divided by 3 * S, S is equal to 1275 * s`, d is equal to 3 divided by 2 * Phi; the error of each number is plus minus 10 per cent. The utility model is arranged at the inlet or outlet of the fan, the vibration wave of airflow is absorbed by soft materials through the holes, therefore the utility model has good sound damping effect.
Description
The utility model is a kind of being installed on the blower fan, can eliminate the device of fan noise.
All kinds of blower fans always send noise in when work because of the vibration of air-flow, have up to 90 decibels, the severe contamination surrounding environment.The large fan that uses in the industrial and mining enterprise can dispose silencing apparatus, uses urib founding, and its structure is comparatively complicated, cost an arm and a leg, and general middle-size and small-size blower fan does not still have desirable silencer.
The purpose of this utility model provides a kind of easy blower fan silencing apparatus, goes for eliminating the noise of all kinds of blower fans.
The technical solution of the utility model is: a kind of blower fan silencing apparatus, has an air duct, the pore cross sectional area that the air duct wall surrounds is S, it is characterized in that: a sheathed sleeve that axial length is L on the air duct, between sleeve and air duct the sound-absorption layer of filling flexible material, the aperture that it is s ' that the air duct wall that is covered by sound-absorption layer is provided with many areas.
The pore cross sectional area S of air duct, the axial length L of sleeve, aperture area s ', hole diameter Φ on the air duct wall and limit, hole square d have following quantitative relation: L
2=16/3S, S=1275s ', d=3/2 Φ, each error in value scope is ± 10%.
Elaborate below in conjunction with embodiment of the present utility model and accompanying drawing thereof.
Accompanying drawing is the structure sectional view of present embodiment.
A kind of blower fan silencing apparatus shown in the drawings, has an air duct 1, the pore cross sectional area that air duct 1 wall surrounds is S, it is characterized in that: the sleeve 3 that a sheathed axial length is L on the air duct 1, between sleeve 3 and air duct 1 sound-absorption layer 2 of filling flexible material, the aperture 4 that it is s ' that air duct 1 wall that is covered by sound-absorption layer 2 is provided with many areas.The aperture 4 general circular holes that adopt also can adopt other irregularly-shaped hole, as the hole of square, triangle, parallelogram, as long as the area in hole and circular hole are equivalent; Aperture 4 area s ' on the pore cross sectional area S of air duct 1, the axial length L of sleeve 3, air duct 1 wall, aperture 4 diameter of phi (comprising equivalent with irregularly-shaped hole area s ' and hole diameter that be converted to) and limit, hole square d thereof have following quantitative relation: L
2=16/3S, S=1275s ', d=3/2 Φ, each error in value scope is ± 10%, exceeds margin of error, perhaps influences erasure effect, perhaps increases materials consumption; Be packed in the material such as the desirable mineral wool of flexible material, cotton, glass wool, sponge of sound-absorption layer 2.
Above-mentioned silencing apparatus is connected to the outlet or the import of blower fan, also can be installed in the import and the outlet of blower fan simultaneously, the vibration wave of air-flow sees through aperture and is absorbed by soft material, thereby good erasure effect arranged, through experiment, noise can be reduced to 45 decibels by 90 decibels, and simple in structure, fabricating cost is low, is applicable to the noise of eliminating all kinds of blower fans.
Claims (2)
1, a kind of blower fan silencing apparatus, has an air duct, the pore cross sectional area that the air duct wall surrounds is S, it is characterized in that: a sheathed sleeve that axial length is L on the air duct, between sleeve and air duct the sound-absorption layer of filling flexible material, the aperture that it is s ' that the air duct wall that is covered by sound-absorption layer is provided with many areas.
2, blower fan silencing apparatus according to claim 1 is characterized in that, the pore cross sectional area S of air duct, the axial length L of sleeve, aperture area s ', hole diameter Φ on the air duct wall and limit, hole square d have following quantitative relation: L
2=16/3S, S=1275s ', d=3/2 Φ, each error in value scope is ± 10%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01210845 CN2470595Y (en) | 2001-02-28 | 2001-02-28 | Fan silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01210845 CN2470595Y (en) | 2001-02-28 | 2001-02-28 | Fan silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2470595Y true CN2470595Y (en) | 2002-01-09 |
Family
ID=33630334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01210845 Expired - Fee Related CN2470595Y (en) | 2001-02-28 | 2001-02-28 | Fan silencer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2470595Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975198A (en) * | 2010-11-19 | 2011-02-16 | 苏州顶裕节能设备有限公司 | Denoising draught fan |
| CN103836007A (en) * | 2014-03-07 | 2014-06-04 | 巴克约根森风机（宁波）有限公司 | Fan with silencer |
-
2001
- 2001-02-28 CN CN 01210845 patent/CN2470595Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975198A (en) * | 2010-11-19 | 2011-02-16 | 苏州顶裕节能设备有限公司 | Denoising draught fan |
| CN103836007A (en) * | 2014-03-07 | 2014-06-04 | 巴克约根森风机（宁波）有限公司 | Fan with silencer |
| CN103836007B (en) * | 2014-03-07 | 2017-01-25 | 宁波伯克杰特工业风机有限公司 | fan with silencer |
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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 |