CN2122957U - Low-noise fan - Google Patents
Low-noise fan Download PDFInfo
- Publication number
- CN2122957U CN2122957U CN 92207709 CN92207709U CN2122957U CN 2122957 U CN2122957 U CN 2122957U CN 92207709 CN92207709 CN 92207709 CN 92207709 U CN92207709 U CN 92207709U CN 2122957 U CN2122957 U CN 2122957U
- Authority
- CN
- China
- Prior art keywords
- fan
- noise
- blower fan
- sound
- absorbing material
- 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.)
- Granted
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Abstract
The utility model relates to a low-noise fan. A layer of sound-absorbing board is coated on the casing of the fan; a frequency accelerator fabricated by elastic materials is arranged between the fan and a fixed foundation; a sound absorbing material layer is laid on the inner walls of the inlet and the outlet of the fan. The structure is adopted to effectively decrease the noise caused by the vibration of the casing, the conduction of the solid and the flow of the air, having the effect of comprehensive treatment. The noise of the fan can be decreased can be lower than that of the state specified standards.
Description
The utility model relates to and a kind ofly is used to compress or the fluid pump of the elastic fluid of finding time, and specifically related is the blower fan that can prevent noise and vibration.
The patent No. is February 3 1988 CN87208108(day for announcing) patent document in the low noise blower unit put down in writing, by on the shell of blower fan, increasing muffler plate, technological schemes such as rubber absorbers are set between blower fan and immobilizing foundation, vibrations have been solved effectively, the caused noise of the conduction between blower fan and the immobilizing foundation owing to Blower Housing.But concerning one group of blower unit, mainly by the vibrations of housing, three kinds of factors combine of the flow at high speed of solid conduction and gas form in the source of its noise.The effective ways that solve pneumatic noise are not provided in the former patent document.In addition, the muffler plate complex structure of being put down in writing in the former patent document, the cost height, erasure effect is undesirable.
The purpose of this utility model is to provide a kind of blower fan that can comprehensive regulation noise.
The purpose of this utility model is achieved in that on the shell of blower fan and is surrounded by acoustical panel, the frequency accelerator that flexible material is made between blower fan and the immobilizing foundation, one deck sound-absorbing material layer of mating formation on the inwall of the inlet of blower fan and outlet, sound-absorbing material layer has the noise reduction guard outward.
Advantage of the present utility model is that erasure effect is obvious, fan noise is dropped to below the state specified standards, can alleviate or eliminate the noise that the vibrations owing to shell cause at the acoustical panel of blower fan outsourcing, the frequency accelerator is set between blower fan and immobilizing foundation, reduced the noise that solid conduction causes effectively, the sound absorbing material of mating formation on outlet, inlet inwall can absorb the caused noise of gas flow at high speed effectively.In addition, the utility model adopts the passing hole type acoustical panel, can reduce the thickness of acoustical panel, strengthens erasure effect.
The technological points that the utility model adopted also can to other machinery as: water pump, internal-combustion engine etc. is administered, and can receive good effect to eliminating machinery solid conduction noise, makes it to become low noise water pump or low noise internal-combustion engine.All can reach the acoustic shock standard of national regulation.
Fig. 1 is a structural representation of the present utility model;
Fig. 2 be into, the outlet structural representation;
Fig. 3 is the structural representation of acoustical panel.
For example the utility model is described in detail below in conjunction with accompanying drawing.
Bag one deck acoustical panel 1 on the shell of blower fan, acoustical panel 1 are to be suppressed by the mixture of pulverized fuel ash and sodium silicate etc. to form, and the through hole of even cloth is arranged on it, earlier it are posted on the shell with Bond is sticking, use pressing plate and screw again.Frequency accelerator 3 is arranged between blower fan and immobilizing foundation, and it buries metal coupling unit by rubber material inside and forms.At the inlet of blower fan and the individual silk flosssilk wadding sound-absorbing material layer 4 of all mating formation of inwall of outlet, be covered with noise reduction net 5 at sound-absorbing material layer 4, ring-type or helical raised are arranged on the noise reduction net 5, the sound absorbing material filling is in projection.
Claims (3)
1, a kind of silent ventilator, on the shell of blower fan, be surrounded by acoustical panel, blower fan and the frequency accelerator that fixedly flexible material is made between the ground is characterized in that: at the inwall of the population of blower fan and outlet one deck sound-absorbing material layer of mating formation, sound-absorbing material layer outer cover noise reduction net.
2, silent ventilator according to claim 1 is characterized in that: noise reduction has ring-type or helical raised on the net.
3, silent ventilator according to claim 1 and 2 is characterized in that: the through hole that even cloth is arranged on the acoustical panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92207709 CN2122957U (en) | 1992-04-18 | 1992-04-18 | Low-noise fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92207709 CN2122957U (en) | 1992-04-18 | 1992-04-18 | Low-noise fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2122957U true CN2122957U (en) | 1992-11-25 |
Family
ID=4953370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92207709 Granted CN2122957U (en) | 1992-04-18 | 1992-04-18 | Low-noise fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2122957U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836007A (en) * | 2014-03-07 | 2014-06-04 | 巴克约根森风机（宁波）有限公司 | Fan with silencer |
| CN108131291A (en) * | 2017-12-20 | 2018-06-08 | 南京蒙福液压机械有限公司 | A kind of vane pump denoising device |
| CN108194393A (en) * | 2018-02-06 | 2018-06-22 | 姜堰区卫姐管件厂 | A kind of high power centrifugal blower |
-
1992
- 1992-04-18 CN CN 92207709 patent/CN2122957U/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108131291A (en) * | 2017-12-20 | 2018-06-08 | 南京蒙福液压机械有限公司 | A kind of vane pump denoising device |
| CN108194393A (en) * | 2018-02-06 | 2018-06-22 | 姜堰区卫姐管件厂 | A kind of high power centrifugal blower |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |