CN103851299B - A kind of engagement cavity is without cotton silencing apparatus - Google Patents
A kind of engagement cavity is without cotton silencing apparatus Download PDFInfo
- Publication number
- CN103851299B CN103851299B CN201410105904.0A CN201410105904A CN103851299B CN 103851299 B CN103851299 B CN 103851299B CN 201410105904 A CN201410105904 A CN 201410105904A CN 103851299 B CN103851299 B CN 103851299B
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- China
- Prior art keywords
- dividing plate
- cavity
- noise elimination
- silencing apparatus
- lacing film
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/02—Energy absorbers; Noise absorbers
- F16L55/033—Noise absorbers
- F16L55/0336—Noise absorbers by means of sound-absorbing materials
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
- Duct Arrangements (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The invention discloses a kind of engagement cavity without cotton silencing apparatus, the some groups of noise elimination lacing films that this engagement cavity comprises housing without cotton silencing apparatus and is located at housing inside and the silencing channel be arranged between two adjacent groups noise elimination lacing film, noise elimination lacing film comprises the first dividing plate be arranged in parallel, second partition, 3rd dividing plate and the 4th dividing plate, first dividing plate and second partition, 3rd dividing plate and the 4th dividing plate form the first cavity with housing respectively, second partition, 3rd dividing plate and housing form the second cavity, collapsible dividing plate setting up and down is provided with in second cavity, first cavity is that hollow is arranged.The present invention has substantive distinguishing features and remarkable progress, do not adopt the lamination coating of the non-metal kinds such as natural cotton, artificial cotton, glass wool, sponge, rock wool and mineral wool at any position of noise elimination lacing film, so the noise elimination lacing film of silencing apparatus of the present invention has the advantage of anti-rain, life-span long, renewable, environmental protection.
Description
Technical field
The invention belongs to the field of noise control in Environmental Engineering, what relate to is a kind of silencing apparatus, and particularly a kind of engagement cavity is without cotton anti-rain silencing apparatus.
Background technique
The control problem of noise is more and more subject to people's attention, and ambient noise is directly connected to the quality of life of people, even has material impact to the physiology of people and mental health.Silencing apparatus is a kind of device both having allowed air-flow to pass through and can decay or hinder sound transmission.On the air-flow path that silencing apparatus is arranged on air powered equipment (equipment as larger in relief opening noises such as blower, air compressor, boiler exhaust mouth, generator, water pumps) usually or in inlet and exhaust system.Silencing apparatus is also the critical facility of employing when carrying out Noise measarement to subway ventilating system.Ventilation and air conditioning system in subway engineering selects metal shell strip-type silencer and structural sheet type silencing apparatus usually.The former is installed on ventilator more and imports and exports two ends, is directly connected with increaser/reducing pipe before and after blower fan; The latter is installed on more, in air draft civil engineering structure air channel and piston air channel, in ventilating shaft.
Energy anti-rain is required for the silencing apparatus be installed in uncovered wind booth ventilating shaft, the sound-absorbing material of the chip dissipative muffler installed in uncovered wind booth ventilating shaft is at present glass wool, multiplex glass cloth parcel, although additional perforated plate, but this silencing apparatus water-resistant performance still poor, working life is shorter, need often to change.For extending silencing apparatus working life, increasing economic efficiency, need a kind of can meet in ventilating shaft eliminate the noise require and environmental protection, anti-rain silencing apparatus.
In addition because of air-conditioning requirement, there are certain requirements the thickness of silencing apparatus noise elimination lacing film, the thickness usually choosing noise elimination lacing film is 200mm ~ 250mm.Based on this technical background, now design a kind of silencing apparatus not only having met noise elimination lacing film thickness requirement but also anti-rain, this silencing apparatus has and adopts engagement cavity to save space thus to meet noise elimination lacing film thickness requirement and do not adopt feature that is natural or artificial cotton fiber.
Summary of the invention
For prior art above shortcomings, the problem that the present invention solves is: provide a kind of engagement cavity without cotton silencing apparatus, make that it is arranged in subway ventilation air channel, inlet and outlet mouth place in uncovered wind booth ventilating shaft or under open-air atmosphere, to meet the requirement of wind booth Noise measarement or inlet and exhaust system Noise measarement.
A kind of engagement cavity is without cotton silencing apparatus, the some groups of noise elimination lacing films that this engagement cavity comprises housing without cotton silencing apparatus and is located at housing inside and the silencing channel be arranged between two adjacent groups noise elimination lacing film, it is characterized in that: described noise elimination lacing film comprises the first dividing plate be arranged in parallel, second partition, 3rd dividing plate and the 4th dividing plate, described first dividing plate and second partition, 3rd dividing plate and the 4th dividing plate form the first cavity with housing respectively, described second partition, 3rd dividing plate and housing form the second cavity, collapsible dividing plate setting up and down is provided with in described second cavity, first cavity is that hollow is arranged.
Preferably, described second partition and/or the 3rd dividing plate are microperforated panel, and the first dividing plate and/or the 4th dividing plate are aluminum fiber thin plate.
Preferably, the quantity of described first cavity body is two groups, and described first cavity and described first dividing plate form the first sound absorption structure.
Preferably, described second cavity and described second partition form the second sound absorption structure.
Preferably, the quantity of described second cavity is two groups, and two group of second cavity interlocks, and forms the dentation of engagement.
Preferably, the acoustic absorptivity in each side draught sound face of described first dividing plate is identical.
Preferably, the described silencing channel width between two adjacent groups noise elimination lacing film is equal.
Compared with prior art, the present invention does not adopt the lamination coating of the non-metal kinds such as natural cotton, artificial cotton, glass wool, sponge, rock wool and mineral wool at any position of noise elimination lacing film, so the noise elimination lacing film of silencing apparatus of the present invention has the advantage of anti-rain, life-span long, renewable, environmental protection.Cavity in noise elimination lacing film between microperforated panel adopts intermeshing tooth type structures, not only met noise elimination lacing film thickness requirement but also without the need to adding the fibrous materials such as glass wool, make the total thickness of noise elimination lacing film at below 200mm.The present invention is arranged in uncovered wind booth ventilating shaft and can reaches the fibrous material of wind booth criteria of noise control again without the need to adopting the moisture-sensitive such as glass wool, Keep away from rain to drench.
Accompanying drawing explanation
In order to the technological scheme in the embodiment of the present invention is more clearly described, introduce to the accompanying drawing used required in embodiment simply below, apparently, the accompanying drawing that the following describes is only some embodiments recorded in the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is that the present invention engages the external overall structural representation of cavity without cotton silencing apparatus;
Fig. 2 is that the present invention engages cavity and overlooks cross section structure schematic diagram without cotton silencing apparatus;
Fig. 3 is that the present invention engages the left view of cavity without cotton silencing apparatus.
Wherein:
10, noise elimination lacing film; 20, silencing channel;
1, aluminum fiber thin plate; 2, the first cavity; 3, microperforated panel;
4, the second cavity; 5, collapsible dividing plate; 6, housing.
Embodiment
To be clearly and completely described technological scheme of the present invention by embodiment below.Obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The sound-absorbing material of the chip dissipative muffler installed in uncovered wind booth ventilating shaft is at present glass wool, multiplex glass cloth parcel, although additional perforated plate, this silencing apparatus water-resistant performance still poor, working life is shorter, need often to change.For extending silencing apparatus working life, increasing economic efficiency, need a kind of can meet in ventilating shaft eliminate the noise require and environmental protection, anti-rain silencing apparatus.In addition, because of air-conditioning requirement, the thickness of silencing apparatus noise elimination lacing film be there are certain requirements.
The present invention is directed to deficiency of the prior art, provide a kind of silencing apparatus not only having met noise elimination lacing film thickness requirement but also anti-rain, this silencing apparatus has and adopts engagement cavity to save space thus to meet noise elimination lacing film thickness requirement and do not adopt feature that is natural or artificial cotton fiber.
The engagement cavity of the preferred embodiment of the present invention is without cotton silencing apparatus, the some groups of noise elimination lacing films that this engagement cavity comprises housing without cotton silencing apparatus and is located at housing inside and the silencing channel be arranged between two adjacent groups noise elimination lacing film, wherein, noise elimination lacing film comprises the first dividing plate, second partition, the 3rd dividing plate and the 4th dividing plate that be arranged in parallel, is provided with collapsible dividing plate setting up and down in the second cavity.Above-mentioned second partition and/or the 3rd dividing plate are microperforated panel, and the first dividing plate and/or the 4th dividing plate are aluminum fiber thin plate.As shown in Figures 1 to 3, some groups of above-mentioned noise elimination lacing films 10 and the silencing channel 20 that is arranged between two adjacent groups noise elimination lacing film.Often organize noise elimination lacing film 10 to comprise successively from inside to outside: collapsible dividing plate 5, be set in parallel in the microperforated panel 3 of described collapsible dividing plate 5 both sides, be set in parallel in the aluminum fiber thin plate 1 of the described outer both sides of microperforated panel 3.Above-mentioned noise elimination lacing film also comprises one and is set in the outside of described aluminum fiber thin plate 1, microperforated panel 3 and collapsible dividing plate 5, the housing 6 for fixing three's relative position.
Above-mentioned first dividing plate and second partition, the 3rd dividing plate and the 4th dividing plate form the first cavity with housing respectively, above-mentioned second partition, the 3rd dividing plate and housing form the second cavity, be provided with collapsible dividing plate setting up and down in above-mentioned second cavity, the first cavity is that hollow is arranged.As shown in Figures 2 and 3, aluminum fiber thin plate 1 is parallel with microperforated panel 3 and establish, and both all have intersection point with above-mentioned housing 6, and form formation first cavity 2 with housing 6.And above-mentioned collapsible dividing plate 5 is consistent with the height of paddy by bending each peak of getting, therefore can fit when arranging all peak dots of collapsible dividing plate 5 of above-mentioned microperforated panel 3 keep again two microperforated panels 3 parallel with the while of valley point.
Form the first cavity 2 between above-mentioned aluminum fiber thin plate 1 and microperforated panel 3, due to aluminum fiber thin plate 1 and microperforated panel 3 quantity everybody two pieces, therefore the quantity of above-mentioned first cavity 2 is two.This first cavity 2 forms the first sound absorption structure with above-mentioned aluminum fiber thin plate 1, and the quantity of this first sound absorption structure is two groups.The space formed between two pieces of parallel microperforated panels 3 and housing 6 is divided into two group of second cavity 4 by above-mentioned collapsible dividing plate 5, and this two group of second cavity 4 is interlaced, forms the dentation of engagement.
Form the second cavity 4 between above-mentioned microperforated panel 3 and described accordion partition 5, the quantity due to microperforated panel 3 is also two pieces, the quantity of above-mentioned second cavity 4 is two groups.This second cavity 4 forms the second sound absorption structure with above-mentioned microperforated panel 3, and the quantity of this second sound absorption structure is two groups.
Preferably, the acoustic absorptivity in each side draught sound face of aluminum fiber thin plate 1 is identical.Average sound absorption coefficient determines the sound absorbing capabilities of whole silencing apparatus, ensures the identical sound absorbing capabilities that can improve silencing apparatus entirety of acoustic absorptivity in each side draught sound face of aluminum fiber thin plate 1.
As the preferred embodiment of the present invention, the width of the described silencing channel 20 between two adjacent groups noise elimination lacing film 10 is equal, balanced to ensure the acoustical absorptivity often organizing noise elimination lacing film 10, makes the soundproof effect that whole silencing apparatus reaches best.
Adopt engagement type cavity both to meet the thickness requirement of noise elimination lacing film, do not adopt again the sound-absorbing material that the Keep away from rains such as glass wool drench, and reach noise elimination requirement simultaneously, this is technological points of the present invention.Engagement type cavity is made up of the sound insulationg board of steel plate or the good folding of material of other sound insulation properties or combination.Each one group of first sound absorption structure and the second sound absorption structure frequency that corresponding wind booth noise is different respectively of the every side of noise elimination lacing film 10.First group of sound absorption structure that the first cavity 2 after aluminum fiber thin plate 1 and aluminum fiber thin plate is formed is for the high-frequency components of wind booth noise, and second group of sound absorption structure that the second cavity 4 of microperforated panel 3 and flute profile is formed is to the medium and low frequency composition of wind booth noise.
The aluminum fiber thin plate 1 of noise elimination lacing film two side external surface also can use iron nickel foam plate, foamed aluminum sheet and other steel fiber classes or foaming metal class material to replace.
Microperforated panel 3 is generally make of the pure metal thin plate that thickness is less than 1mm, and thin plate is less than with aperture the bit bore of 3mm, and punching rate is 1% one 3%.Select the chamber that different punching rates is different with thickness of slab dark, just can control the spectral performance of silencing apparatus, make it in the frequency range needed, obtain good soundproof effect.Microperforated panel 3 also can use aluminum fiber thin plate, iron nickel foam plate, foamed aluminum sheet and other steel fiber classes or foaming metal class material to replace.
As a kind of preferred implementation of the present invention: to the noise elimination lacing film near ventilating shaft sidewall, only need remove the aluminum fiber thin plate 1 by ventilating shaft sidewall side, and the microperforated panel 3 of this side is replaced with general dividing plate.
The invention discloses a kind of engagement cavity without cotton silencing apparatus, compared with prior art, the present invention has the following advantages:
(1) lamination coating of the non-metal kinds such as natural cotton, artificial cotton, glass wool, sponge, rock wool and mineral wool is not adopted at any position of noise elimination lacing film, so the noise elimination lacing film of silencing apparatus of the present invention has the advantage of anti-rain, life-span long, renewable, environmental protection;
(2) cavity in noise elimination lacing film between microperforated panel adopts intermeshing tooth type structures, not only met noise elimination lacing film thickness requirement but also without the need to adding the fibrous materials such as glass wool, make the total thickness of noise elimination lacing film at below 200mm.
(3) the present invention is arranged in uncovered wind booth ventilating shaft and can reaches the fibrous material of wind booth criteria of noise control again without the need to adopting the moisture-sensitive such as glass wool, Keep away from rain to drench.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present invention or essential characteristic, the present invention can be realized in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the present invention.Any reference character in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this specification is described according to mode of execution, but not each mode of execution only comprises an independently technological scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should by specification integrally, and the technological scheme in each embodiment also through appropriately combined, can form other mode of executions that it will be appreciated by those skilled in the art that.
Claims (5)
1. an engagement cavity is without cotton silencing apparatus, the silencing channel (20) that this engagement cavity comprises housing (6) without cotton silencing apparatus and is located at some groups of inner noise elimination lacing films (10) of housing (6) and is arranged between two adjacent groups noise elimination lacing film (10), it is characterized in that: described noise elimination lacing film (10) comprises from inside to outside successively: collapsible dividing plate (5), be set in parallel in the microperforated panel (3) of described collapsible dividing plate (5) both sides, be set in parallel in the aluminum fiber thin plate (1) of described microperforated panel (3) outer both sides, described microperforated panel (3) and aluminum fiber thin plate (1) form the first dividing plate be arranged in parallel, second partition, 3rd dividing plate and the 4th dividing plate, wherein the first dividing plate and the 4th dividing plate are aluminum fiber thin plate (1), second partition and the 3rd dividing plate are microperforated panel (3), described housing is used for fixing noise elimination lacing film (10) and vertically with described noise elimination lacing film (10) arranges, the space formed between described first dividing plate, second partition, housing is the first cavity (2), and the first cavity (2) is hollow setting, the space formed between described second partition, the 3rd dividing plate, housing is the second cavity (4), in described second cavity (4), between the housing of both sides, be folded with collapsible dividing plate (5), second cavity (4) is divided into two groups by this collapsible dividing plate (5), and two group of second cavity (4) is interlaced, form two group of second cavity (4) of engagement dentation.
2. engagement cavity according to claim 1 is without cotton silencing apparatus, it is characterized in that: the quantity of described first cavity is two groups, and described first cavity and described first dividing plate form the first sound absorption structure.
3. engagement cavity according to claim 2 is without cotton silencing apparatus, it is characterized in that: described second cavity and described second partition form the second sound absorption structure.
4. engagement cavity according to claim 1 is without cotton silencing apparatus, it is characterized in that: the acoustic absorptivity in each side draught sound face of described first dividing plate is identical.
5. engagement cavity according to claim 1 is without cotton silencing apparatus, it is characterized in that: the described silencing channel width between two adjacent groups noise elimination lacing film is equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410105904.0A CN103851299B (en) | 2014-03-20 | 2014-03-20 | A kind of engagement cavity is without cotton silencing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410105904.0A CN103851299B (en) | 2014-03-20 | 2014-03-20 | A kind of engagement cavity is without cotton silencing apparatus |
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| Publication Number | Publication Date |
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| CN103851299A CN103851299A (en) | 2014-06-11 |
| CN103851299B true CN103851299B (en) | 2016-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410105904.0A Active CN103851299B (en) | 2014-03-20 | 2014-03-20 | A kind of engagement cavity is without cotton silencing apparatus |
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| CN (1) | CN103851299B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106251853A (en) * | 2016-10-09 | 2016-12-21 | 四川中车复合材料结构有限公司 | A kind of novel foam aluminum sound-absorbing composite board |
| CN115451468A (en) * | 2022-09-20 | 2022-12-09 | 青岛海尔空调器有限总公司 | Air conditioner silencer |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2093242U (en) * | 1991-01-16 | 1992-01-15 | 徐火炬 | Sanitary shape complex impedance type silencer |
| CN2458451Y (en) * | 2000-12-29 | 2001-11-07 | 上海申华声学装备有限公司 | Strong wind slice type silencer |
| CN2869833Y (en) * | 2005-12-23 | 2007-02-14 | 吉林大学 | Automobile air-tunnel balancing-seam silencer |
| CN201599917U (en) * | 2009-09-23 | 2010-10-06 | 北京绿创声学工程股份有限公司 | Sound eliminator of large-sized subway ventilating system |
| JP2011012597A (en) * | 2009-07-02 | 2011-01-20 | Corona Corp | Muffler |
| KR20110057293A (en) * | 2009-11-24 | 2011-06-01 | 홍익대학교 산학협력단 | Noise insulation plate |
| CN201865683U (en) * | 2010-08-16 | 2011-06-15 | 彭世雄 | Sheet-type fence cutting and diverting muffler |
| CN102108890A (en) * | 2009-12-29 | 2011-06-29 | 张波 | Silencer |
| CN203797235U (en) * | 2014-03-20 | 2014-08-27 | 苏州大学 | Meshing cavity cotton-free muffler |
-
2014
- 2014-03-20 CN CN201410105904.0A patent/CN103851299B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2093242U (en) * | 1991-01-16 | 1992-01-15 | 徐火炬 | Sanitary shape complex impedance type silencer |
| CN2458451Y (en) * | 2000-12-29 | 2001-11-07 | 上海申华声学装备有限公司 | Strong wind slice type silencer |
| CN2869833Y (en) * | 2005-12-23 | 2007-02-14 | 吉林大学 | Automobile air-tunnel balancing-seam silencer |
| JP2011012597A (en) * | 2009-07-02 | 2011-01-20 | Corona Corp | Muffler |
| CN201599917U (en) * | 2009-09-23 | 2010-10-06 | 北京绿创声学工程股份有限公司 | Sound eliminator of large-sized subway ventilating system |
| KR20110057293A (en) * | 2009-11-24 | 2011-06-01 | 홍익대학교 산학협력단 | Noise insulation plate |
| CN102108890A (en) * | 2009-12-29 | 2011-06-29 | 张波 | Silencer |
| CN201865683U (en) * | 2010-08-16 | 2011-06-15 | 彭世雄 | Sheet-type fence cutting and diverting muffler |
| CN203797235U (en) * | 2014-03-20 | 2014-08-27 | 苏州大学 | Meshing cavity cotton-free muffler |
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| CN103851299A (en) | 2014-06-11 |
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