CN103851299A - Engaged cavity cotton-free silencer - Google Patents
Engaged cavity cotton-free silencer Download PDFInfo
- Publication number
- CN103851299A CN103851299A CN201410105904.0A CN201410105904A CN103851299A CN 103851299 A CN103851299 A CN 103851299A CN 201410105904 A CN201410105904 A CN 201410105904A CN 103851299 A CN103851299 A CN 103851299A
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- China
- Prior art keywords
- cavity
- dividing plate
- cotton
- separation plate
- silencing apparatus
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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 an engaged cavity cotton-free silencer, which comprises an outer frame, a plurality of groups of silencing hanging sheets and a silencing passage, wherein the silencing hanging sheets are arranged inside the outer frame, the silencing passage is arranged between the two adjacent groups of silencing hanging sheets, each silencing hanging sheet comprises a first separation plate, a second separation plate, a third separation plate and a fourth separation plate in parallel arrangement, the first separation plate and the second separation plate as well as the third separation plate and the fourth separation plate respectively form a first cavity with the outer frame, the second separation plate and the third separation plate form a second cavity with the outer frame, a folding separation plate in vertical arrangement is arranged in the second cavity, and the first cavity is in hollow arrangement. The engaged cavity cotton-free silencer has the substantive characteristics and the significant progress, and nonmetal fiber materials such as natural cotton, artificial cotton, glass cotton, sponge, rock cotton and mineral cotton are not adopted in any positions of the silencing hanging sheets, so the hanging sheets of the silencer have the advantages that the rain showering is prevented, the service life is long, the reproducibility is realized, and the environment is protected.
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 people's quality of life, and even the physiology to people and mental health have material impact.Silencing apparatus is a kind of device that had both allowed air-flow to pass through and can decay or hinder sound transmission.Silencing apparatus is arranged on the air-flow path of aerodynamic force equipment (as larger equipment of relief opening noise such as blower, air compressor, boiler exhaust mouth, generator, water pumps) or in inlet and exhaust system conventionally.Silencing apparatus is also the critical facility adopting when subway ventilating system is carried out to noise control.Ventilation and air conditioning system in subway engineering is selected metal shell strip-type silencer and structural sheet type silencing apparatus conventionally.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, ventilating shaft.
Require energy anti-rain for the silencing apparatus being installed in uncovered wind booth ventilating shaft, the sound-absorbing material of the chip dissipative muffler of installing 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 to often change.For extending silencing apparatus working life, increasing economic efficiency, need a kind of can meet to eliminate the noise in ventilating shaft require and the silencing apparatus of environmental protection, anti-rain.
Because of air-conditioning requirement, the thickness of silencing apparatus noise elimination lacing film be there are certain requirements in addition, the thickness of conventionally choosing noise elimination lacing film is 200mm～250mm.Based on this technical background, now design a kind of silencing apparatus that had not only met noise elimination lacing film thickness requirement but also anti-rain, thereby this silencing apparatus has the advantages that to adopt engagement cavity to meet noise elimination lacing film thickness requirement and do not adopt natural or artificial cotton fiber to save space.
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 the noise control of wind booth or the control of inlet and exhaust system noise.
A kind of engagement cavity is without cotton silencing apparatus, this engagement cavity comprises housing without cotton silencing apparatus and is located at some groups of noise elimination lacing films of housing inside and is arranged on the silencing channel between two adjacent groups noise elimination lacing film, it is characterized in that: described noise elimination lacing film comprises the first dividing plate be arrangeding in parallel, second partition, the 3rd dividing plate and the 4th dividing plate, described the first dividing plate and second partition, the 3rd dividing plate and the 4th dividing plate form the first cavity with housing respectively, described second partition, the 3rd dividing plate and housing form the second cavity, in described the second cavity, be provided with collapsible dividing plate setting up and down, the first cavity is hollow setting.
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 the first cavity body is two groups, and described the first cavity and described the first dividing plate form the first sound absorption structure.
Preferably, described the second cavity and described second partition form the second sound absorption structure.
Preferably, the quantity of described the second cavity is two groups, and two group of second cavity is staggered, forms the dentation of engagement.
Preferably, the acoustic absorptivity of each side draught sound face of described the first dividing plate is identical.
Preferably, the described silencing channel width between two adjacent groups noise elimination lacing film equates.
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 advantages of that anti-rain, life-span are long, renewable, environmental protection.Cavity in noise elimination lacing film between microperforated panel adopts intermeshing tooth type structures, has not only met the thickness requirement of noise elimination lacing film but also without adding the fibrous materials such as glass wool, and the total thickness of the lacing film that makes to eliminate the noise is below 200mm.The present invention is arranged in uncovered wind booth ventilating shaft and can reaches wind booth criteria of noise control again without the fibrous material that adopts the moisture-sensitive such as glass wool, Keep away from rain to drench.
Brief description of the drawings
For the technological scheme in the embodiment of the present invention is more clearly described, to the accompanying drawing of required use in embodiment be introduced simply below, apparently, the accompanying drawing the following describes is only some embodiments that record in the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
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 who obtains under creative work prerequisite, belong to the scope of protection of the invention.
The sound-absorbing material of the chip dissipative muffler of installing 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 to often change.For extending silencing apparatus working life, increasing economic efficiency, need a kind of can meet to eliminate the noise in ventilating shaft require and the silencing apparatus of environmental protection, anti-rain.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 that had not only met noise elimination lacing film thickness requirement but also anti-rain, thereby this silencing apparatus has the advantages that to adopt engagement cavity to meet noise elimination lacing film thickness requirement and do not adopt natural or artificial cotton fiber to save space.
The engagement cavity of the preferred embodiment of the present invention is without cotton silencing apparatus, this engagement cavity comprises housing without cotton silencing apparatus and is located at some groups of noise elimination lacing films of housing inside and is arranged on the silencing channel 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 be arranged on the silencing channel 20 between two adjacent groups noise elimination lacing film.Every group of noise elimination lacing film 10 comprises from inside to outside successively: collapsible dividing plate 5, be set in parallel in described collapsible dividing plate 5 both sides microperforated panel 3, be set in parallel in the aluminum fiber thin plate 1 of described microperforated panel 3 outer both sides.Above-mentioned noise elimination lacing film also comprises that one is set in the outside of described aluminum fiber thin plate 1, microperforated panel 3 and collapsible dividing plate 5, housing 6 for fixing three's relative position.
Above-mentioned the 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, in above-mentioned the second cavity, be provided with collapsible dividing plate setting up and down, the first cavity is hollow setting.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 forms and form the first cavitys 2 with housing 6.And the height of each peak that above-mentioned collapsible dividing plate 5 is got by bending and paddy is consistent, therefore can fit in the time arranging all peak dots and the valley point of collapsible dividing plate 5 of above-mentioned microperforated panel 3 keeps again two microperforated panels 3 parallel simultaneously.
Between above-mentioned aluminum fiber thin plate 1 and microperforated panel 3, form the first cavity 2, due to the quantity of aluminum fiber thin plate 1 and microperforated panel 3 everybody two, therefore the quantity of above-mentioned the 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 forming between two 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.
Between above-mentioned microperforated panel 3 and described accordion partition 5, form the second cavity 4, because the quantity of microperforated panel 3 is also that two, the quantity of above-mentioned the second cavity 4 are 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 of 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 of aluminum fiber thin plate 1 each side draught sound face.
As the preferred embodiment of the present invention, the width of the described silencing channel 20 that two adjacent groups noise elimination lacing film is 10 equates, to ensure the acoustical absorptivity equilibrium of every group of noise elimination lacing film 10, makes whole silencing apparatus reach best soundproof effect.
Adopt engagement type cavity both to meet the thickness requirement of noise elimination lacing film, do not adopt again the sound-absorbing material of the Keep away from rain pouring such as glass wool, and reach noise elimination requirement simultaneously, this is technological points of the present invention.Engagement type cavity is made up of steel plate or the good folding of material of other sound insulation properties or the sound insulationg board of combination.Each one group of first sound absorption structure of noise elimination lacing film 10 every sides and the second sound absorption structure different frequency of corresponding wind booth noise respectively.First group of sound absorption structure that the first cavity 2 after aluminum fiber thin plate 1 and aluminum fiber thin plate forms be for the high frequency composition of wind booth noise, the medium and low frequency composition of second group of sound absorption structure that the second cavity 4 of microperforated panel 3 and flute profile forms to wind booth noise.
The aluminum fiber thin plate 1 of noise elimination lacing film two side external surfaces 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 to make of the pure metal thin plate that thickness is less than 1mm, is less than the bit bore of 3mm on thin plate with aperture, 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 of needs, 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 one side, and by dividing plate the replacement general microperforated panel of this side 3 use.
The invention discloses a kind of engagement cavity without cotton silencing apparatus, compared with prior art, the present invention has the following advantages:
(1) not 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 advantages of that anti-rain, life-span are long, renewable, environmental protection;
(2) cavity between microperforated panel adopts intermeshing tooth type structures in noise elimination lacing film, has not only met the thickness requirement of noise elimination lacing film but also without adding the fibrous materials such as glass wool, and the total thickness of the lacing film that makes to eliminate the noise is below 200mm.
(3) the present invention is arranged in uncovered wind booth ventilating shaft and can reaches wind booth criteria of noise control again without the fibrous material that adopts 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 example embodiment, and in the situation that not deviating from spirit of the present invention or essential characteristic, can realize the present invention with other concrete form.Therefore, no matter from which point, all should regard embodiment as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, is therefore intended to all changes that drop in the implication and the scope that are equal to important document of claim to include in the present invention.Any reference character in claim should be considered as limiting related claim.
In addition, be to be understood that, although this specification is described according to mode of execution, but be not that 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 make specification as a whole, and the technological scheme in each embodiment also can, through appropriately combined, form other mode of executions that it will be appreciated by those skilled in the art that.
Claims (7)
1. an engagement cavity is without cotton silencing apparatus, this engagement cavity comprises housing without cotton silencing apparatus and is located at some groups of noise elimination lacing films of housing inside and is arranged on the silencing channel between two adjacent groups noise elimination lacing film, it is characterized in that: described noise elimination lacing film comprises the first dividing plate be arrangeding in parallel, second partition, the 3rd dividing plate and the 4th dividing plate, described the first dividing plate and second partition, the 3rd dividing plate and the 4th dividing plate form the first cavity with housing respectively, described second partition, the 3rd dividing plate and housing form the second cavity, in described the second cavity, be provided with collapsible dividing plate setting up and down, the first cavity is hollow setting.
2. engagement cavity according to claim 1, without cotton silencing apparatus, is characterized in that: 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.
3. engagement cavity according to claim 2, without cotton silencing apparatus, is characterized in that: the quantity of described the first cavity body is two groups, and described the first cavity and described the first dividing plate form the first sound absorption structure.
4. engagement cavity according to claim 2, without cotton silencing apparatus, is characterized in that: described the second cavity and described second partition form the second sound absorption structure.
5. engagement cavity according to claim 4, without cotton silencing apparatus, is characterized in that: the quantity of described the second cavity is two groups, and two group of second cavity is staggered, forms the dentation of engagement.
6. housing engagement cavity according to claim 1, without cotton silencing apparatus, is characterized in that: the acoustic absorptivity of each side draught sound face of described the first dividing plate is identical.
7. engagement cavity according to claim 1, without cotton silencing apparatus, is characterized in that: the described silencing channel width between two adjacent groups noise elimination lacing film equates.
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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103851299A true CN103851299A (en) | 2014-06-11 |
| CN103851299B CN103851299B (en) | 2016-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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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| Country | Link |
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| CN (1) | CN103851299B (en) |
Cited By (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 |
Cited By (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 |
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| Publication number | Publication date |
|---|---|
| CN103851299B (en) | 2016-03-23 |
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