CN201111889Y - Novel composite silencer - Google Patents
Novel composite silencer Download PDFInfo
- Publication number
- CN201111889Y CN201111889Y CNU2007200294782U CN200720029478U CN201111889Y CN 201111889 Y CN201111889 Y CN 201111889Y CN U2007200294782 U CNU2007200294782 U CN U2007200294782U CN 200720029478 U CN200720029478 U CN 200720029478U CN 201111889 Y CN201111889 Y CN 201111889Y
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- CN
- China
- Prior art keywords
- sound absorption
- sound
- rubber
- muffler
- plastic
- 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 novel composite muffler with the function of sound absorption and noise reduction. The composite muffler mainly comprises a flange, an external panel, sound absorption material, a micropunch plate and a support frame, wherein, the inner side of the external panel of the muffler is bonded with a layer of rubber-plastic sponge and also with a layer of sound absorption material such as rubber plastic or polyethylene, etc.; the section of the sound absorption material takes a shape of a sine-cosine wave crest/trough and provided with an opening; the micropunch plate is connected on the inner support frame in a rivet joint manner and forms a expansion sound absorption and insulation chamber together with the sound absorption material. Compared with the conventional muffler, the composite muffler provided by the utility model can reduce the noise level by 4-5 dB and the rubber-plastic sponge of the composite muffler has the effects of fire retarding, thermal insulation and anti-cold bridge; in addition, the composite muffler can also save a procedure of external thermal insulation in the ventilation of an air conditioner and can be widely applied to air conditioning systems in such fields as electronics, purification, food hygiene and so on.
Description
Affiliated technical field
The utility model has related to a kind of NEW TYPE OF COMPOSITE sound suppressor of energy sound-deadening and noise-reducing.Belong to the air-conditioning system field of accessories.
Background technology
More common sound suppressor has two classes: a class is that micropunch plate muffler is to utilize individual layer (bilayer) microperforated panel that the air source noise in the air conditioner is carried out noise elimination noise reduction, and shortcoming is the sound-deadening and noise-reducing weak effect and does not have the anti-cold bridge effect of insulation; Another kind of is that the little sound suppressor of resistive tubular type is to utilize the super glass wool of microperforated panel that the air source noise in the air conditioner is carried out noise elimination noise reduction, but the ventilation and air conditioning system long-time running has the cotton dust of ultra-fine glass and produces, and this is definitely unallowable in electronics, purification, food hygiene industry.
Summary of the invention
The utility model provides a kind of sound suppressor that can overcome above shortcoming.The technical scheme that its technical solution problem is adopted is: the NEW TYPE OF COMPOSITE sound suppressor mainly is made up of flange, outer panels, acoustic absorbant, microperforated panel, bracing frame.Side bonds one deck rubber-plastic sponge in the sound suppressor outer panels, the rubber-plastic sponge inboard is pasted acoustic absorbants such as one deck rubber and plastic or tygon again, the cross sectional shape of this material is sine and cosine Wave crest and wave trough shape and is perforate, riveted joint has a microperforated panel on inner support frame, and microperforated panel and above sound-absorbing material layer surround an expansion sound-absorbing sound booth.
The beneficial effects of the utility model are: the sound suppressor of same model reduces noise 4～5dB than conventional little sound suppressor of resistive tubular type and micropunch plate muffler, and its rubber-plastic sponge also has fire-retardant, insulation, anti-cold bridge effect, saved the outer together installation procedure that is incubated in air conditioner ventilation; Reduced the influence of the bracing frame technology of double-deck micropunch plate muffler and ultra-fine glass cotton fiber to air purity and personal safety health.Can be widely used in industries such as electronics, purification, food hygiene.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the A-A cut-open view among Fig. 1.
Among the figure: 1 outer panels, 2 rubber-plastic sponges, 3 acoustic absorbants, 4 inner support frames, 5 microperforated panels, 6 expansion sound-absorbing sound booths, 7 flanges.
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
Its sound suppressor of present embodiment as depicted in figs. 1 and 2 is a rectangular box shape.The bonding rubber-plastic sponge of outer panels (1) nexine (2), to paste the cross section more thereon be sine and cosine Wave crest and wave trough shape and be acoustic absorbants (3) such as the rubber and plastic of perforate or tygon, form sound-absorbing material layer reinforcements such as () all around available angle bar, the inner support frame of sound suppressor (4) is welded by the angle steel of end face and side.Riveted joint has microperforated panel (5) on its angle of the flank brandreth, and microperforated panel (5) has been formed an expansion sound-absorbing sound booth (6) with sound-absorbing material layer, is covered with many fine and closely woven apertures (hole diameter is 1mm～2mm, percentage of perforation 1～5%) on the microperforated panel.The outer panels at sound suppressor two ends (1) is connected with flange (7), and flange (7) is connected with the air port.
When the noise of air channel or blower fan generation passes through the NEW TYPE OF COMPOSITE sound suppressor, at first tackled by microperforated panel (5), enter acoustic absorbants (3) such as the rubber and plastic of expansion sound-absorbing sound booth (6) and sine and cosine Wave crest and wave trough shape or tygon again and produce collision, collision repeatedly through multi-angle, the vibrations noise is absorbed gradually and weakens, thereby makes the noise of air port discharging reach environmental requirement.
Claims (1)
1. a NEW TYPE OF COMPOSITE sound suppressor mainly is made up of flange, outer panels, acoustic absorbant, microperforated panel, bracing frame, it is characterized in that: side bonds one deck rubber-plastic sponge in the sound suppressor outer panels, the rubber-plastic sponge inboard is pasted acoustic absorbants such as one deck rubber and plastic or tygon again, the cross sectional shape of this acoustic absorbant is sine and cosine Wave crest and wave trough shape and is perforate that microperforated panel of riveting and above sound-absorbing material layer surround an expansion sound-absorbing sound booth on the inner support frame side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200294782U CN201111889Y (en) | 2007-10-23 | 2007-10-23 | Novel composite silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200294782U CN201111889Y (en) | 2007-10-23 | 2007-10-23 | Novel composite silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201111889Y true CN201111889Y (en) | 2008-09-10 |
Family
ID=39963632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200294782U Expired - Fee Related CN201111889Y (en) | 2007-10-23 | 2007-10-23 | Novel composite silencer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201111889Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106128445A (en) * | 2016-08-26 | 2016-11-16 | 四川三元环境治理股份有限公司 | Full microperforated absorber acoustic filter |
| CN108716985A (en) * | 2018-04-03 | 2018-10-30 | 无锡威孚力达催化净化器有限责任公司 | A kind of sound source modeling test device |
-
2007
- 2007-10-23 CN CNU2007200294782U patent/CN201111889Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106128445A (en) * | 2016-08-26 | 2016-11-16 | 四川三元环境治理股份有限公司 | Full microperforated absorber acoustic filter |
| CN108716985A (en) * | 2018-04-03 | 2018-10-30 | 无锡威孚力达催化净化器有限责任公司 | A kind of sound source modeling test device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080910 Termination date: 20101023 |