CN201326584Y - Silencing component for silencer - Google Patents
Silencing component for silencer Download PDFInfo
- Publication number
- CN201326584Y CN201326584Y CNU200820124415XU CN200820124415U CN201326584Y CN 201326584 Y CN201326584 Y CN 201326584Y CN U200820124415X U CNU200820124415X U CN U200820124415XU CN 200820124415 U CN200820124415 U CN 200820124415U CN 201326584 Y CN201326584 Y CN 201326584Y
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- CN
- China
- Prior art keywords
- noise
- silencer
- utility
- microperforated panel
- conical surface
- 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
The utility model belongs to the field of silencers and particularly relates to a silencing component for a silencer. In the silencer of the prior art, the front end and the rear end of a silencing component are both planes so that pressure loss is increased and noise reduction effect is poor. The utility model adopts microperforated panel reel sound absorption structure and a conical surface with a conic node as a windward side; the included angle between the conical surface and the axial line is from 45 to 60 degrees; porous rock wool materials are filled inside so as to enlarge the sound absorption frequency band; and therefore, the pressure loss is small, and air current regenerative noise is low so as to achieve the effect of reducing the noise of the silencer by 6 to 10 dB(A). The utility model is installed in the silencer and used for silencing devices of cooling blowers for transformer coolers so as to reduce the environmental pollution caused by the noise of transformers.
Description
Technical field
The utility model belongs to the baffler field, and particularly a kind of baffler is with splitting between noise reduction.
Background technique
The noise that produces during the used cooling blower of transformer cooler turns round usually becomes influences the misfortune of workers ' health and interference environment source.Particularly be close to the blower fan in living area, the air power noise of its intake grill and the radiation of exhaust outlet institute, the principal element of befouling environment forms public hazards especially, is that Industry Branch is administered one of main object of noise pollution in recent years.The silencer erasure effect that improves the transformer cooling blower is to reduce the key measure of pollution of the NOISE ON ENVIRONMENT of transformer.In the baffler of prior art, split the front end and back end between all noise reductions and all adopt the plane, the pressure loss is increased, it is bad to fall anti noise.The normal anti-formula structure that the resistance formula structure high, that mid-frequency noise plays the noise elimination effect or centering, low-frequency noise is played the noise elimination effect that adopts reaches the noise elimination effect in the baffler.As simultaneously in resistance formula passage, having adopted high frequency and two kinds of acoustic attenuation zones of low frequency,, can realize good noise elimination effect with broadening noise elimination frequency band to greatest extent.Adopt the windward side and the angled vertex of a cone of axis, the pressure loss is reduced about 10Pa, make many noise reductions of baffler sound 6～7dB (A).
The model utility content
The purpose of this utility model is used the front end and back end all to adopt between the noise reduction on plane to split in order to solve baffler in the background technique, the pressure loss increases, it is poor to reduce noise effects, provide a kind of baffler with splitting between noise reduction, it is characterized in that the vertex of a cone 1 is a conical surface, an end of its end circle and microperforated panel reel 2 is affixed, filling porous property rock wool material 3 in the vertex of a cone 1 and the microperforated panel reel 2, plug 4 is affixed with the other end of microperforated panel reel 2.
The conical surface and the axis of the described vertex of a cone 1 be at 45～60 ° of angles, and its thickness is not less than 1.5mm.
Wear on the cylndrical surface of described microperforated panel reel 2 with aperture 2～3mm, the micropore of spacing 3～5mm, the punching rate scope is 1～5%, its thickness is not more than 0.9mm.
The beneficial effects of the utility model are, because of characteristics of the present utility model are to adopt microperforated panel reel sound absorption structure, the windward side is the conical surface of the vertex of a cone, conical surface and axis be at 45～and 60 ° of angles, inner filling porous property rock wool material makes the baffler noise reduce by 6～10dB (A).
Description of drawings
Fig. 1 splits structural representation between noise reduction.
1 is the vertex of a cone among the figure, and 2 is the microperforated panel reel, and 3 is porosity rock wool material, and 4 is plug.
Embodiment
As shown in Figure 1, the vertex of a cone 1 is a conical surface, and an end of its end circle and microperforated panel reel 2 is affixed, filling porous property rock wool material 3 in the vertex of a cone 1 and the microperforated panel reel 2, and plug 4 is affixed with the other end of microperforated panel reel 2.The conical surface of the vertex of a cone 1 and axis angle at 45 is that the steel plate of 1.5mm is made with thickness.Wear on the cylndrical surface of described microperforated panel reel 2 with aperture 3mm, the micropore of spacing 5mm, the punching rate scope is 1～5%, is that the sheet metal of 0.9mm is made with thickness.Plug 4 is affixed with the other end of microperforated panel reel 2, and its material is the 1mm steel plate.
Split between noise reduction and be contained in the baffler, baffler is aimed at the cooling blower exhaust outlet of transformer cooler with the vertex of a cone of splitting between noise reduction, split between noise reduction with the baffler orifice plate and fix, increased and split between noise reduction and the baffler soundness, reduce the vibration of baffler with the direct welding of band steel.
Working principle of the present utility model is, splits top steel plate thickness between noise reduction and is not less than 1.5mm, and windward side and axis angle at 45 is to reduce noise; Employing is not more than the microperforated panel soundabsorbing construction of the thin plate microperforated panel formation of 0.9mm, has strengthened sound sucting band; Inner filling porous property rock wool material utilizes the resistive sound absorption principle of sound-absorbing material, and its absorption band is wide, and the pressure loss is little, and the air-flow regenerated noise is low, and is easy to control, further reaches noise reduction noise elimination purpose.
The utility model is used for the silencer of the used cooling blower of transformer cooler, and the effect of the noise reduction that it is good has reduced the pollution of transformer noise to environment.
Claims (3)
1. a baffler is with splitting between noise reduction, it is characterized in that: the vertex of a cone (1) is a conical surface, one end of its end circle and microperforated panel reel (2) is affixed, filling porous property rock wool material (3) in the vertex of a cone (1) and the microperforated panel reel (2), and plug (4) is affixed with the other end of microperforated panel reel (2).
2. baffler according to claim 1 is characterized in that with splitting between noise reduction, the conical surface and the axis of the described vertex of a cone (1) be at 45～and 60 ° of angles, its thickness is not less than 1.5mm.
3. baffler according to claim 1 is characterized in that with splitting between noise reduction, wears with aperture 2～3mm on the cylndrical surface of described microperforated panel reel (2), and the micropore of spacing 3～5mm, the punching rate scope is 1～5%, its thickness is not more than 0.9mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820124415XU CN201326584Y (en) | 2008-12-05 | 2008-12-05 | Silencing component for silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820124415XU CN201326584Y (en) | 2008-12-05 | 2008-12-05 | Silencing component for silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201326584Y true CN201326584Y (en) | 2009-10-14 |
Family
ID=41178556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820124415XU Expired - Fee Related CN201326584Y (en) | 2008-12-05 | 2008-12-05 | Silencing component for silencer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201326584Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952687A (en) * | 2016-03-17 | 2016-09-21 | 潘泉方 | Fan silencer |
| CN106286414A (en) * | 2015-06-02 | 2017-01-04 | 北京富特盘式电机有限公司 | A kind of blower fan silencing device and the application on transformer cooler blower fan thereof |
| CN111677697A (en) * | 2020-05-06 | 2020-09-18 | 徐州徐工环境技术有限公司 | Motor sweeper fan silencing device |
| CN112484113A (en) * | 2020-11-16 | 2021-03-12 | 宁波方太厨具有限公司 | Noise reduction device, range hood applying noise reduction device and control method of range hood |
-
2008
- 2008-12-05 CN CNU200820124415XU patent/CN201326584Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106286414A (en) * | 2015-06-02 | 2017-01-04 | 北京富特盘式电机有限公司 | A kind of blower fan silencing device and the application on transformer cooler blower fan thereof |
| CN106286414B (en) * | 2015-06-02 | 2018-10-30 | 北京富特盘式电机有限公司 | A kind of blower fan silencing device and its application on transformer cooler wind turbine |
| CN105952687A (en) * | 2016-03-17 | 2016-09-21 | 潘泉方 | Fan silencer |
| CN111677697A (en) * | 2020-05-06 | 2020-09-18 | 徐州徐工环境技术有限公司 | Motor sweeper fan silencing device |
| CN112484113A (en) * | 2020-11-16 | 2021-03-12 | 宁波方太厨具有限公司 | Noise reduction device, range hood applying noise reduction device and control method of range hood |
| CN112484113B (en) * | 2020-11-16 | 2022-02-18 | 宁波方太厨具有限公司 | Noise reduction device, range hood applying noise reduction device and control method of range hood |
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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: 20091014 Termination date: 20131205 |