CN101363346B - Low frequency self-cleaning noise deadener and method for making same - Google Patents
Low frequency self-cleaning noise deadener and method for making same Download PDFInfo
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- CN101363346B CN101363346B CN2008101570581A CN200810157058A CN101363346B CN 101363346 B CN101363346 B CN 101363346B CN 2008101570581 A CN2008101570581 A CN 2008101570581A CN 200810157058 A CN200810157058 A CN 200810157058A CN 101363346 B CN101363346 B CN 101363346B
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- ultramicropore
- absorbing membrane
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- 238000004140 cleaning Methods 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims description 20
- 239000012528 membrane Substances 0.000 claims abstract description 50
- 229910052751 metal Inorganic materials 0.000 claims abstract description 11
- 239000002184 metal Substances 0.000 claims abstract description 11
- 239000011358 absorbing material Substances 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 238000009434 installation Methods 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 51
- 230000030279 gene silencing Effects 0.000 claims description 18
- 238000004080 punching Methods 0.000 claims description 14
- 238000005516 engineering process Methods 0.000 claims description 8
- 238000005520 cutting process Methods 0.000 claims description 7
- 230000002265 prevention Effects 0.000 claims description 5
- 238000010008 shearing Methods 0.000 claims description 4
- 238000004026 adhesive bonding Methods 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 3
- 239000012943 hotmelt Substances 0.000 claims description 3
- 229920002521 macromolecule Polymers 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- 239000012780 transparent material Substances 0.000 claims description 2
- 230000004888 barrier function Effects 0.000 abstract 4
- 238000000746 purification Methods 0.000 description 6
- 229910052755 nonmetal Inorganic materials 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000008030 elimination Effects 0.000 description 4
- 238000003379 elimination reaction Methods 0.000 description 4
- 229920000515 polycarbonate Polymers 0.000 description 4
- 239000004417 polycarbonate Substances 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000011491 glass wool Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910052752 metalloid Inorganic materials 0.000 description 1
- 150000002738 metalloids Chemical class 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000036314 physical performance Effects 0.000 description 1
- 229920006289 polycarbonate film Polymers 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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Abstract
The invention discloses a low-frequency self-cleaning muffler and a manufacturing method thereof; the low-frequency self-cleaning muffler consists of a shell sound barrier, a ultramicropore sound absorbing membrane, an air current channel and a connecting flange; the air current channel is positioned in the shell sound barrier, and the outer surface of the periphery of the air current channel is covered with the ultramicropore sound absorbing membrane; the connecting flanges are arranged at both ends of the shell sound barrier and communicates the air current channel with a pipeline. By adopting the ultramicropore sound absorbing membrane as sound absorbing material and metal or high molecular plates as the shell sound barrier, the low-frequency self-cleaning muffler has the advantages of light weight, low production cost, convenient installation, and the like; the low-frequency self-cleaning muffler is more suitable for the situations with high environment humidity and high requirements for cleaning and low-frequency sound absorbing; the low-frequency self-cleaning muffler also can be made into a fireproof and full transparent muffler.
Description
Technical field
The invention belongs to noise elimination environmental protection field, specifically with low frequency self-cleaning noise deadener of a kind of ultra micro perforation resonance sound-absorbing film production with environmental protection and preparation method thereof.
Background technique
Present silencing apparatus both domestic and external is of a great variety, as: dissipative muffler, reactive muffler, impedance complex formula silencing apparatus, micropunch plate muffler etc., their good acoustic attenuation performances have been obtained very gratifying achievement aspect noise elimination noise reduction.But because dissipative muffler generally uses sound-absorbing porous material to make, as: materials such as glass wool, mineral cotton plate in use, exist secondary pollution problem.Thereby the solution secondary pollution problem becomes a developing direction of all kinds of silencing apparatuss.
The exploitation of micropunch plate muffler has obtained desirable effect with being applied in to solve on the secondary pollution problem, but because the acoustic absorptivity of its sound-absorbing material is low, and the frequency band that mainly absorbs sound is in medium-high frequency.Use at present micropunch plate muffler generally to use punching rate at 1%～3% microperforated panel material.Adopt the principle of microperforated panel resonance sound-absorbing structure, be need not any sound-absorbing porous material, but on thin sheet metal, bore many micropores, the aperture of these micropores is generally below the 1mm, for widening sound sucting band, the aperture should be as far as possible little, but because of the manufacturing process restriction, so aperture commonly used is 0.3～1.0mm, material is generally thickness at the aluminium sheet of 0.5～1.0mm, steel plate, corrosion resistant plate, galvanized sheet, PC plate, wood veneer, cardboard etc.Kong Yuexiao, acoustic resistance is just much bigger, and the acoustic absorptivity of structure is just high, and the past, the aperture of processing also can't reach ultramicropore, and can't guarantee to have higher acoustic absorptivity at wideband owing to the restriction of technology.
Summary of the invention
In order to overcome the problem that silencing apparatus in the prior art exists, the purpose of this invention is to provide low frequency self-cleaning noise deadener that the fire-retardant nonmetal sound absorbing membrane that can effectively absorb sound again of a kind of usefulness is made into and preparation method thereof.This low frequency self-cleaning noise deadener utilizes the ultramicropore sound absorbing membrane as sound-absorbing material, not only has metal and the superior purification function of nonmetal microperforated panel, but also possesses advantages such as transparent or opaque, in light weight, low price; The ultramicropore that makes full use of sound absorbing membrane processing has good sound absorbing capabilities to low frequency, and is applicable to that ambient humidity is big, purification, the demanding place of low frequency absorption; While can be satisfied on-the-spot needs fire protection flame retarding, antistatic, be reached the requirement of antiultraviolet.Adopt nanometer technology at nonmetal sound absorbing membrane material surface, the surface oneself of material own possessed corresponding purification function, the spot of effectively removing material surface with and dust.
The objective of the invention is to be achieved through the following technical solutions:
A kind of low frequency self-cleaning noise deadener is characterized in that: it comprises shell sound insulationg board, ultramicropore sound absorbing membrane, air-flow path and adpting flange; Air-flow path is positioned at the shell sound insulationg board, and bag is carried out on outer surface around the air-flow path the ultramicropore sound absorbing membrane; Adpting flange is arranged on shell sound insulationg board two ends and air-flow path is communicated with pipeline.
Among the present invention, described ultramicropore sound absorbing membrane is made by polycarbonate (PC) or macromolecule nonmetallic material.
Described shell sound insulationg board and ultramicropore sound absorbing membrane are made by high temperature resistant, fire prevention, anti-corrosion material.
Described shell sound insulationg board and ultramicropore sound absorbing membrane are made by transparent or non-transparent material.
Described ultramicropore sound absorbing membrane thickness range is between 0.05～0.3mm, and the aperture is between 0.05～0.3mm.
The nanometer purified treatment can be passed through in the surface of ultramicropore sound absorbing membrane.
A kind of making method of above-mentioned low frequency self-cleaning noise deadener is characterized in that it may further comprise the steps:
1), designs the parameters of ultramicropore sound-absorbing material to be processed according to the aerodynamic noise sound field situation that will control;
2) to different situations such as sound field frequency and installation conditionss, carry out theoretical modeling, determine the technical parameters such as material thickness, aperture, punching rate and the use number of plies of ultramicropore sound absorbing membrane to be processed;
3) determine transparency, antiultraviolet, protection against the tide, self-cleaning and the requirement of frpf correlation technique of the selection of material according to different use occasions and usage requirement;
4) according to parameters such as the resulting material thickness of calculating, aperture, punching rates, and the requirement of the selection of material, obtain ultramicropore sound absorbing membrane to be processed and produce drawing, the establishment processing process;
5) opaque low frequency self-cleaning noise deadener is selected for use and is produced the material of stipulating in the drawing, adopts the CNC shearing machine blanking according to the size on the drawing, and numerical control bender shapes, and integral production method carries out with reference to the making method of metal dissipative muffler;
6) the bright low frequency self-cleaning noise deadener of full impregnated also according to producing the material stipulated in the drawing and the size on the drawing, with the blanking of numerical control board-cutting machine, adopts hot melt and gluing method machine shaping; It is similar substantially to the processing technology of other metal silencing apparatus, and different is when using thicker sheet material, to need certain surplus, earlier uses mechanical cutting, polish with machinery then or method correction such as hand finish to standard measure;
7) the ultramicropore sound absorbing membrane is made into the sound absorbing membrane framework or directly is fixed on the outer sound insulationg board of silencing apparatus according to the design needs.
The present invention is with transparency polycarbonate film or other macromolecule nonmetallic material, by regularity of distribution punching out a certain size, the ultramicropore of some, make transparent or opaque nonmetallic material ultra micro perforation sound absorbing membrane.Sound absorbing membrane can be selected material, aperture, punching rate, the use number of plies of different-thickness, reaches to regulate its acoustically effective of control.
Nonmetallic material ultramicropore sound absorbing membrane must pass through theoretical calculation when determining the thickness of material, aperture, punching rate and the use number of plies.Can adopt " micropunch resonance sound-absorbing coefficient calculations software " (Nanjing ChangRong noise control Environment Protection Engineering Co., Ltd provides) simulation,, determine the processing parameter that rational sound absorbing membrane is required at the different situation of sound field frequency.
The processing technology of each metalloid silencing apparatus of processing technology and other of shell sound insulationg board plate shearing blanking of the present invention and flap moulding is similar substantially, different is when using thicker sheet material as the bright silencing apparatus of full impregnated, need certain surplus, earlier use mechanical cutting, polish with machinery then or method correction such as hand finish to standard measure.
Compared with prior art, the present invention has following advantage:
1. utilize polycarbonate (PC) and other macromolecular material favorable mechanical processibility, adjust material thickness or parameters such as punching aperture and punching rate, the ultramicropore of processing can significantly improve the sound absorbing membrane sound absorbing capabilities.
2. except that the advantage that has kept the microperforated panel resonance sound-absorbing structure, the acoustical behavior of ultramicropore rubbish sound film increases again.
3. utilize the good mechanical and physical performance of its ultramicropore sound absorbing membrane material and the advantage of anti-creep, the silencing apparatus of making is not yielding, structural strength is high.
4. according to the difference of use occasion, silencing apparatus of the present invention can satisfy on-the-spot protection against the tide, fire prevention, antistatic, self-cleaning requirement; Special occasions can be made the bright silencing apparatus of full impregnated, and can possess antiultraviolet, frpf function.
5. cleaning does not produce secondary pollution to human body, the degree of purification height.
6. in light weight, transportation and installation are all very convenient.
7. the ultramicropore sound absorbing membrane that uses in the low frequency self-cleaning noise deadener is compared with the metal acoustic board, because using the weight of material to have significantly, it descends, its Costco Wholesale has obtained effective control, and sound absorbing capabilities is enhanced, and has demonstrated fully the superior cost performance of material.
8. the ultramicropore sound absorbing membrane that uses in the low frequency self-cleaning noise deadener is because its good sound absorbing capabilities, meet or exceed silencing apparatus with the silencing apparatus acoustic attenuation performance effect of its making with resistive material, and can be according to the different situations of noise frequency, design at the particular frequencies section, especially to the tangible place of low-frequency noise, reach the best purpose of control noise.
Low frequency self-cleaning noise deadener can be used for improving in the control of aerodynamic noise, also has following excellent characteristics:
1. as improving the silencing apparatus of aerodynamic noise, can be effectively in each frequency band effect of well being eliminated the noise.
2. the low frequency self-cleaning noise deadener cleaning does not produce secondary pollution to human body, the degree of purification height.
3. the ultramicropore sound absorbing membrane that uses in the low frequency self-cleaning noise deadener not only has the micropore sound absorption, has also taken into account the advantages such as resonance sound-absorbing of film.
4. low frequency self-cleaning noise deadener can be that full impregnated is bright, also can be opaque.
5. low frequency self-cleaning noise deadener can be replaced traditional sound-absorbing material in a large number, reaches the purpose of economical with materials energy saving;
6. low frequency self-cleaning noise deadener has protection against the tide, fire prevention, antistatic, antiultraviolet;
7. the nonmetal sound absorbing membrane material surface that uses of low frequency self-cleaning noise deadener has adopted nanometer technology, and the surface oneself of material own is possessed corresponding purification function, the spot of effectively removing material surface with and dust, ultramicropore can not occur and stop up.
The present invention is the superior low frequency self-cleaning noise deadener of a kind of acoustical behavior, and it is big to ambient humidity to satisfy market, purifies, low frequency absorption is demanding presses for, and is economical and practical; Can be according to the difference of use occasion, select the bright or opaque material of full impregnated to make, its sound absorption structure and can have the advantage of metal and nonmetal micropunch plate muffler concurrently.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a schematic cross-section of the present invention.
Embodiment
A kind of low frequency self-cleaning noise deadener of the present invention, it comprises shell sound insulationg board 1, ultramicropore sound absorbing membrane 2, air-flow path 3, adpting flange 4 and airduct 5.Air-flow path 3 is positioned at shell sound insulationg board 1, and bag is carried out on outer surface around the air-flow path 3 ultramicropore sound absorbing membrane 2; Two adpting flanges 4 are separately positioned on shell sound insulationg board 1 two ends and air-flow path 3 are communicated with airduct 5, are used for reducing the noise in the airduct 5.
Ultramicropore sound absorbing membrane 2 is made by polycarbonate (PC) or macromolecular material.Shell sound insulationg board and ultramicropore sound absorbing membrane can be high temperature resistant, fire prevention, anticorrosion, uvioresistant.
The preparation process of low frequency self-cleaning noise deadener of the present invention is as follows:
The first step:
1. according to the aerodynamic noise sound field situation that will control, design the parameters of ultramicropore sound-absorbing material to be processed.
2. to different situations such as sound field frequency and installation conditionss, use " micropunch resonance sound-absorbing coefficient calculations software " theoretical modeling of Nanjing ChangRong noise control Environment Protection Engineering Co., Ltd's exploitation, determine the technical parameters such as material thickness, aperture, punching rate and the use number of plies of ultramicropore sound absorbing membrane to be processed.
3. determine transparency, antiultraviolet, protection against the tide, self-cleaning and the requirement of frpf correlation technique of the selection of material according to different use occasions and usage requirement.
4. according to calculating parameters such as resulting material thickness, aperture, punching rate, and the requirement of the selection of material, obtain ultramicropore sound absorbing membrane to be processed and produce drawing, the establishment processing process.
Second step:
1. opaque low frequency self-cleaning noise deadener is selected for use and is produced the material of stipulating in the drawing, adopts the CNC shearing machine blanking according to the size on the drawing, and numerical control bender shapes, and integral production method carries out with reference to the making method of metal dissipative muffler.
2. the bright low frequency self-cleaning noise deadener of full impregnated also according to producing the material stipulated in the drawing and the size on the drawing, with the blanking of numerical control board-cutting machine, adopts hot melt and gluing method machine shaping; It is similar substantially to the processing technology of other metal silencing apparatus, and different is when using thicker sheet material, to need certain surplus, earlier uses mechanical cutting, polish with machinery then or method correction such as hand finish to standard measure.
3. the ultramicropore sound absorbing membrane is made into the sound absorbing membrane framework or directly is fixed on the outer sound insulationg board of silencing apparatus according to the design needs.
The present invention utilizes manufactured ultramicropore sound absorbing membrane material, designs and produces into low frequency self-cleaning noise deadener, its ultramicropore sound absorbing membrane by regularity of distribution requirement punching out a certain size, the ultramicropore of some.The ultramicropore sound absorbing membrane is selected material, aperture, punching rate, the use number of plies of different-thickness, reaches the width of adjusting noise elimination frequency band or the noise elimination noise reduction that adapts to the aerodynamic noise under the various varying environments.
Claims (4)
1. low frequency self-cleaning noise deadener, it is characterized in that: it comprises shell sound insulationg board (1), ultramicropore sound absorbing membrane (2), air-flow path (3) and adpting flange (4); Air-flow path (3) is positioned at shell sound insulationg board (1), and bag is carried out on outer surface around the air-flow path (3) ultramicropore sound absorbing membrane (2); Adpting flange (4) is arranged on shell sound insulationg board (1) two ends and air-flow path (3) is communicated with pipeline; Described ultramicropore sound absorbing membrane (2) is made by the macromolecule nonmetallic material; Described ultramicropore sound absorbing membrane (2) thickness range is between 0.05～0.3mm, and the aperture is between 0.05～0.3mm; The surface of described ultramicropore sound absorbing membrane (2) is through the nanometer purified treatment.
2. low frequency self-cleaning noise deadener according to claim 1 is characterized in that: described shell sound insulationg board (1) and ultramicropore sound absorbing membrane (2) are made by high temperature resistant, fire prevention, anti-corrosion material.
3. low frequency self-cleaning noise deadener according to claim 1 is characterized in that: described shell sound insulationg board (1) and ultramicropore sound absorbing membrane (2) are made by transparent or non-transparent material.
4. the making method of the described low frequency self-cleaning noise deadener of claim 1 is characterized in that it may further comprise the steps:
1), designs the parameters of ultramicropore sound-absorbing material to be processed according to the aerodynamic noise sound field situation that will control;
2) to sound field frequency and installation conditions different situations, carry out theoretical modeling, determine material thickness, aperture, the punching rate of ultramicropore sound absorbing membrane to be processed and the technical parameter that uses the number of plies;
3) determine transparency, antiultraviolet, protection against the tide, self-cleaning and the requirement of frpf correlation technique of the selection of material according to different use occasions and usage requirement;
4) according to the resulting material thickness of calculating, aperture, punching rate parameter, and the requirement of the selection of material, obtain ultramicropore sound absorbing membrane to be processed and produce drawing, the establishment processing process;
5) opaque low frequency self-cleaning noise deadener is selected for use and is produced the material of stipulating in the drawing, adopts the CNC shearing machine blanking according to the size on the drawing, and numerical control bender shapes, and integral production method carries out with reference to the making method of metal dissipative muffler;
6) the bright low frequency self-cleaning noise deadener of full impregnated also according to producing the material stipulated in the drawing and the size on the drawing, with the blanking of numerical control board-cutting machine, adopts hot melt and gluing method machine shaping; It is similar substantially to the processing technology of other metal silencing apparatus, and different is when using thicker sheet material, to need certain surplus, earlier uses mechanical cutting, polish with machinery then or the correction of hand finish method to standard measure;
7) the ultramicropore sound absorbing membrane is made into the sound absorbing membrane framework or directly is fixed on the outer sound insulationg board of silencing apparatus according to the design needs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101570581A CN101363346B (en) | 2008-09-23 | 2008-09-23 | Low frequency self-cleaning noise deadener and method for making same |
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| CN2008101570581A CN101363346B (en) | 2008-09-23 | 2008-09-23 | Low frequency self-cleaning noise deadener and method for making same |
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| CN101363346A CN101363346A (en) | 2009-02-11 |
| CN101363346B true CN101363346B (en) | 2010-06-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103754112A (en) * | 2014-01-29 | 2014-04-30 | 重庆长安汽车股份有限公司 | Car transmission shaft assembly |
| CN108363872B (en) * | 2018-02-12 | 2020-05-08 | 重庆大学 | Method for treating low-frequency noise environment by using ultrasonic absorber |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2646392Y (en) * | 2003-08-27 | 2004-10-06 | 洛阳西苑车辆与动力检验所有限公司 | Tri-chamber impedance composite type exhaust muffler of engine |
| CN101149006A (en) * | 2006-09-21 | 2008-03-26 | 雅马哈株式会社 | Silencer |
| CN101171406A (en) * | 2005-06-24 | 2008-04-30 | 丰田自动车株式会社 | Silencer for fuel cell |
| CN201111890Y (en) * | 2007-11-01 | 2008-09-10 | 薛小民 | Micro-perforated sound absorption material |
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2008
- 2008-09-23 CN CN2008101570581A patent/CN101363346B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2646392Y (en) * | 2003-08-27 | 2004-10-06 | 洛阳西苑车辆与动力检验所有限公司 | Tri-chamber impedance composite type exhaust muffler of engine |
| CN101171406A (en) * | 2005-06-24 | 2008-04-30 | 丰田自动车株式会社 | Silencer for fuel cell |
| CN101149006A (en) * | 2006-09-21 | 2008-03-26 | 雅马哈株式会社 | Silencer |
| CN201111890Y (en) * | 2007-11-01 | 2008-09-10 | 薛小民 | Micro-perforated sound absorption material |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2003-161135A 2003.06.06 |
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Assignee: NANJING CHANGRONG ENVIRONMENTAL & ACOUSTIC ENGINEER CO.,LTD. Assignor: Zhang Rongchu Contract record no.: 2011320000138 Denomination of invention: Low frequency self-cleaning noise deadener and method for making same Granted publication date: 20100609 License type: Exclusive License Open date: 20090211 Record date: 20110303 |
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