CN2494914Y - Foam aluminium sheet type noise absorber - Google Patents
Foam aluminium sheet type noise absorber Download PDFInfo
- Publication number
- CN2494914Y CN2494914Y CN 00249249 CN00249249U CN2494914Y CN 2494914 Y CN2494914 Y CN 2494914Y CN 00249249 CN00249249 CN 00249249 CN 00249249 U CN00249249 U CN 00249249U CN 2494914 Y CN2494914 Y CN 2494914Y
- Authority
- CN
- China
- Prior art keywords
- sound
- sound absorption
- absorption
- absorption plate
- foamed aluminium
- 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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- Duct Arrangements (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The utility model discloses a foam aluminum sheet type nose absorber which has a framework in correspondence with the ventilation ducts. Two face-to-face foam aluminum plates of complex aluminum foils are connected with a metal plate which is arranged between the two foam aluminum plates through a hollow keel so as to form a sound-absorption piece. The sound-absorption piece and the shell of a muffler form a circular hollow channel, in which 1 to 10 sound-absorption pieces are arranged in the airflow direction, resulting in 2 to 11 small wind tunnels. Sound energy is transformed into thermal energy by the sound-absorption piece, so the sound absorption is realized. Big wind tunnel is divided into several small tunnels to enhance the sound-absorption efficiency and to solve the high-frequency failure. The utility model is very effective in the absorption of low, medium and high frequency sounds, and can greatly reduce the gas-dynamic noise generated by fans.
Description
The utility model relates to a kind of duct attenuation device, particularly a kind of foamed aluminium strip-type silencer that is applied to duct attenuation.
Existing blower fan silencing apparatus has two kinds, is respectively chip and pipe silencer and the microperforated panel structure silencing apparatus of making sound-absorbing material with glass wool, rock wool.Because glass wool, rock wool property are broken easy to break, spread in the air and be detrimental to health.And scrap the back and can not wear out and can not handle, environment is polluted at nature.Therefore with the silencing apparatus of this material, though the function of eliminating noise, characteristics easy to make are arranged, but in making and using process, easily cause atmospheric pollution, human body skin, respiratory tract are damaged, and the shortcoming that easy suction is arranged, be blown away, thereby its unstable properties, can not use in places outdoor and that steam is many.Microperforated panel structure silencing apparatus is the silencing apparatus that utilizes the resonance sound-absorbing principle of microperforated panel to make, though do not pollute the environment, because its sound absorption efficiency is low, frequency is narrow, volume is big, complex structure, involve great expense, thereby seldom use in engineering.Chinese patent CN98225264, CN98225265 have introduced " Sound-absorbing fire door " " sound barrier " respectively, these two patents have been introduced the sound absorption that utilizes foamed aluminium to make door and the acoustic barrier of overhead road, and function and the utility model of its structure and use are inequality.
The purpose of this utility model is to provide a kind of simple in structure, free from environmental pollution, foamed aluminium strip-type silencer stable, that volume is applied to duct attenuation for a short time of eliminating the noise.
The purpose of this utility model is achieved in that a kind of foamed aluminium strip-type silencer, by muffler shell, hollow keel, aluminium foil, foamed aluminium board, sheet metal, flange, reducing constitutes, it is characterized in that: this silencing apparatus profile is the shaped as frame structure that is complementary with ventilation duct, by the foamed aluminium board of the multiple aluminium foil of two relative subsides by the hollow keel that are attached thereto and be arranged between foamed aluminium board the sheet metal sound absorption plate that is formed by connecting, sound absorption plate and muffler shell are connected to form the toroidal cavity passage, in passage, 1-10 sound absorption plate is housed, forms 2-11 little air channel along airflow direction.Distance is 20-200mm between the sound absorption plate.The sound absorption plate two ends are sealed by arc sheetmetal.The distance range that sound absorption plate and muffler shell form toroidal cavity is 20-200mm.
The beneficial effects of the utility model are: owing to adopted compound foamed aluminum as the pipeline sound absorption plate, acoustic energy is converted into heat energy reaches noise elimination, wind trunk is separated into some little air channels, can improve sound absorption efficiency and solve the high frequency Problem of Failure.Solved and used glass wool, chip and pipe silencer that rock wool makes sound-absorbing material easily cause atmospheric pollution, to human body skin, respiratory tract damages, and easy suction arranged, the shortcoming that is blown away, and microperforated panel structure silencing apparatus sound absorption efficiency is low, frequency is narrow, volume is big, complex structure, the shortcoming that involves great expense, the utility model sound-absorbing material good mechanical property, the intensity height, has fire prevention, waterproof, performance such as anti-aging, acoustic characteristics is than good, to low, in, high frequency sound all has good sound absorption, and it is simple in structure, volume is little, easy for installation, the aerodynamic noise that blower fan is produced reduces greatly.
Description of drawings
Fig. 1 the utility model is installed in the structural representation on the ventilation duct
Fig. 2 the utility model a position sectional view
Fig. 3 the utility model b position sectional view
Fig. 4 the utility model perspective view
The 1-muffler shell, the hollow keel of 2-, 3-aluminium foil, 4-foamed aluminium board, 5-sound absorption plate, 6-sheet metal, 7-arc sheetmetal, 8-reducing, 9-air channel, 10-flange, 11-air conditioner pipeline.
The utility model is described in further detail below in conjunction with accompanying drawing
Embodiment 1: consult Fig. 2,3,4, a kind of foamed aluminium strip-type silencer, by muffler shell 1, hollow keel 2, aluminium foil 3, foamed aluminium board 4, sheet metal 6, flange 10, reducing 8 constitutes, be installed in the straight way of air conditioner pipeline 11, this silencing apparatus profile is the shaped as frame structure that is complementary with the air conditioner pipeline, by the foamed aluminium board 4 of the multiple aluminium foil 3 of two relative subsides by the hollow keel 2 that are attached thereto and be arranged between foamed aluminium board sheet metal 6 sound absorption plate 5 that is formed by connecting, sound absorption plate 5 is connected to form the toroidal cavity passage with muffler shell 1, sound absorption plate 5 two ends are sealed by arc sheetmetal 7, distance is 140mm between the sound absorption plate, in passage, 3 sound absorption plates are housed along airflow direction, sound absorption plate is a straight line type, forms 4 a little air channel 9.Consult Fig. 1, shell 1 is through reducing 8 connection orchids 10, and the pipeline that is connected with need is fixed in air conditioner pipeline 11 systems.The distance range that sound absorption plate and muffler shell form toroidal cavity is 140mm.
Embodiment 2: a kind of foamed aluminium strip-type silencer, be installed in the bend of air conditioner pipeline, and in passage, 7 sound absorption plates 5 are housed along airflow direction, sound absorption plate 5 is a curved head type, forms 8 little air channels 9.Distance is 60mm between the sound absorption plate, and sound absorption plate 5 is 60mm with the distance range that muffler shell 1 forms toroidal cavity.All the other are identical with embodiment 1.
Claims (4)
1, a kind of foamed aluminium strip-type silencer, by muffler shell [1], hollow keel [2], aluminium foil [3], foamed aluminium board [4], sheet metal [6], flange [10], reducing [8] constitutes, it is characterized in that: this silencing apparatus profile is the shaped as frame structure that is complementary with ventilation duct, by the foamed aluminium board [4] of the multiple aluminium foil [3] of two relative subsides by the hollow keel [2] that are attached thereto and be arranged on sheet metal between foamed aluminium board [6] sound absorption plate [5] that is formed by connecting, sound absorption plate [5] is connected to form the toroidal cavity passage with muffler shell, in passage, 1-10 sound absorption plate is housed, forms 2-11 little air channel [9] along airflow direction.
2, foamed aluminium strip-type silencer according to claim 1 is characterized in that distance is 20-200mm between the described sound absorption plate [5].
3, foamed aluminium strip-type silencer according to claim 1 and 2 is characterized in that described sound absorption plate [5] two ends are sealed by arc sheetmetal [7].
4, foamed aluminium strip-type silencer according to claim 1 is characterized in that sound absorption plate [5] and the distance range that muffler shell [1] forms toroidal cavity are 20-200mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00249249 CN2494914Y (en) | 2000-09-15 | 2000-09-15 | Foam aluminium sheet type noise absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00249249 CN2494914Y (en) | 2000-09-15 | 2000-09-15 | Foam aluminium sheet type noise absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2494914Y true CN2494914Y (en) | 2002-06-12 |
Family
ID=33607721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00249249 Expired - Fee Related CN2494914Y (en) | 2000-09-15 | 2000-09-15 | Foam aluminium sheet type noise absorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2494914Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1311186C (en) * | 2003-05-23 | 2007-04-18 | 株式会社神户制钢所 | Noise reduction structure of porous plate |
| 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 |
| CN102927061A (en) * | 2012-11-15 | 2013-02-13 | 江苏中联风能机械有限公司 | Annular muffler device for large-sized air cooling fan |
| CN103397932A (en) * | 2013-08-23 | 2013-11-20 | 宁波舜江汽车部件制造有限公司 | Automotive intercooler connecting tube |
| CN104875764A (en) * | 2015-06-05 | 2015-09-02 | 南车青岛四方机车车辆股份有限公司 | Noise reduction air channel and railway vehicle |
-
2000
- 2000-09-15 CN CN 00249249 patent/CN2494914Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1311186C (en) * | 2003-05-23 | 2007-04-18 | 株式会社神户制钢所 | Noise reduction structure of porous plate |
| 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 |
| CN102927061A (en) * | 2012-11-15 | 2013-02-13 | 江苏中联风能机械有限公司 | Annular muffler device for large-sized air cooling fan |
| CN103397932A (en) * | 2013-08-23 | 2013-11-20 | 宁波舜江汽车部件制造有限公司 | Automotive intercooler connecting tube |
| CN103397932B (en) * | 2013-08-23 | 2015-09-16 | 宁波舜江汽车部件制造有限公司 | Vehicle intercooler connecting tube |
| CN104875764A (en) * | 2015-06-05 | 2015-09-02 | 南车青岛四方机车车辆股份有限公司 | Noise reduction air channel and railway vehicle |
| CN104875764B (en) * | 2015-06-05 | 2017-10-31 | 中车青岛四方机车车辆股份有限公司 | A kind of noise elimination wind conduit and rail vehicle |
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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 |