CN203805818U - Noise reduction device - Google Patents
Noise reduction device Download PDFInfo
- Publication number
- CN203805818U CN203805818U CN201420203489.8U CN201420203489U CN203805818U CN 203805818 U CN203805818 U CN 203805818U CN 201420203489 U CN201420203489 U CN 201420203489U CN 203805818 U CN203805818 U CN 203805818U
- Authority
- CN
- China
- Prior art keywords
- flap
- folded plate
- noise reduction
- outer flap
- interior
- 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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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The utility model discloses a noise reduction device. The noise reduction device comprises a rectangular frame and a plurality of noise reduction plates fixed into the rectangular frame side by side. Each noise reduction plate comprises an outer folded plate, an inner folded plate, an outer folded plate supporting rod, sound absorption cotton and two end face plates, wherein both the outer folded plate and the inner folded plate are bent to be in a Y shape, the outer folded plate and the inner folded plate are fixedly connected to form a structure which is internally provided with a cavity and has a Y-shaped cross section, the sound absorption cotton with which the cavity is filled adheres to the inner side face of the outer folded plate and the inner side face of the inner folded plate, the two end face plates are fixedly connected with the two ends of the noise reduction plate respectively, and the first side of the outer folded plate and the second side of the inner folded plate are respectively provided with a plurality of through holes. The first side of each outer folded plate and the second side of the corresponding inner folded plate form an included angle, noise sound waves are transmitted to the sound absorption cotton in the noise reduction plates through the through holes in the first sides of the outer folded plates and are then transmitted out of the through holes in the second sides of the inner folded plates, and therefore the standing time of the noise sound waves in the sound absorption cotton is prolonged, and the secondary noise reduction effect is obvious.
Description
Technical field
The utility model relates to a kind of noise reduction apparatus, and particularly a kind of noise reduction apparatus for vehicle mounted square cabin or van, belongs to environmental technology field.
Background technology
Vehicle mounted square cabin or van need operation in the wild, operation for geoexploration, hydraulic engineering, building engineering, army's field operations etc., the multiple consumer being equipped with in it needs vehicle-based generator set power supply, and vehicle-based generator set generally drives electrical generator generating by spark ignition engine (abbreviation oil machine).At present, along with development in science and technology, more and more stricter to oil machine noise objective in the body of cabin, in order to guarantee not refueled aircraft influence of noise of personnel inside and outside cabin, at air outlet place and the ventilation inlet place of cabin body, denoising device has all been installed.Due to limited space in cabin, do not affecting under the prerequisite of noise reduction, denoising device must have the features such as little, for convenience detach and easy care of volume.Existing denoising device adopts the polylith be arrangeding in parallel to have the rectangular panel blocks structure of cavity, and filling acoustical cotton in cavity, is respectively equipped with a plurality of through holes at rectangular panel blocks two parallel side plates.In actual use, because distance between two parallel side plates is shorter, noise enters acoustical cotton by a plurality of through holes from rectangular panel blocks side plate, stops in very short time and just from another side plate of rectangular panel blocks, passes, and noise reduction is not obvious.In addition, this denoising device volume is larger, and mounting or dismounting are inconvenient.
Utility model content
For overcome the not obvious and volume of existing denoising device noise reduction greatly, the shortcoming such as not quick detachable, the utility model proposes obvious, the easy-to-dismount denoising device of a kind of noise reduction,
The utility model is achieved by the following technical programs.
A kind of denoising device, comprise rectangle housing and the polylith noise reducing plate that is arranged side by side in rectangle housing and two ends are fixedly connected with rectangle housing respectively, described noise reducing plate comprises outer flap, interior flap, outer flap strut bar, acoustical cotton and two end plates, described outer flap and interior flap are all bent into chevron pointing, outer flap and interior flap have the chevron-shaped cross-section structure of cavity in being fixedly connected into by the horizontal edge overlapping, the acoustical cotton being filled in cavity is bonding with outer flap medial surface and interior flap medial surface respectively, two end plates are fixedly connected with noise reducing plate two ends respectively, outer flap the first side and interior flap the second side are respectively equipped with a plurality of through holes.
The purpose of this utility model can also further realize by following technical measures.
Aforesaid denoising device, the support bar that wherein said and outer flap bending shape conforms to is supported on inner side, chevron pointing bending place.
Aforesaid denoising device, forms angle between wherein said outer flap the first side and interior flap the second side.Outer flap and interior flap form by aluminium sheet bending,
Outer flap the first side and interior flap the second side that the utility model is provided with a plurality of through holes form angle, noise sound wave imports in the acoustical cotton in noise reducing plate from a plurality of through holes of outer flap the first side, from a plurality of through holes of interior flap the second side, spread out of again, extended the length of the halt of noise sound wave in acoustical cotton, secondary noise reduction is obvious.The utility model structure is less, is convenient to rapid-assembling/disassembling, and good looking appearance takies in cabin space less.
Advantage and disadvantage of the present utility model, the non-limitative illustration by preferred embodiment below is for illustration and explanation, and these embodiment, only provide as an example with reference to accompanying drawing.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the A-A cutaway view Amplified image of Fig. 1;
Fig. 3 is the cutaway view Amplified image of noise reducing plate.
The specific embodiment
?below in conjunction with drawings and Examples, the utility model is described in further detail.
As shown in FIG. 1 to 3, the present embodiment comprises the rectangle housing 1 of steel and is arranged side by side 9 noise reducing plates 2 in rectangle housing 1, and rectangle housing 1 is provided with flange 11, can the utility model be fixed on by tightening screw to air outlet or the ventilation inlet of cabin body.
Noise reducing plate 2 comprises outer flap 21, interior flap 22, outer flap strut bar 23, acoustical cotton 24 and two end plates 25, outer flap 21 and the interior flap 22 of aluminum are all bent into rectangular chevron pointing, 22 liang of lateral bucklings of interior flap go out horizontal edge 222, outer flap 21 and interior flap 22 have the chevron-shaped cross-section structure of cavity in being fixedly connected into by the horizontal edge 222 overlapping, acoustical cotton 24 is filled in cavity, acoustical cotton 24 both sides are bonded between outer flap 21 medial surfaces and interior flap 22 medial surfaces, two end plates 25 are separately fixed on noise reducing plate 2 two ends, rectangle housing 1 is fixedly connected with the end plates 25 at noise reducing plate 2 two ends by riveted joint, thereby noise reducing plate 2 is fixed in rectangle housing 1.Be respectively equipped with a plurality of through holes 213 with outer flap the first side 211 of rectangle housing 1 and interior flap the second side 222.
In order to improve the intensity of noise reducing plate 2, the support bar 23 of the bending conforming to outer flap 21 bending shapes is supported on outer flap 21 inner sides, bending place, right angle.
Structure of the present utility model makes noise sound wave import at the acoustical cotton 24 between outer flap the first side 211 and interior flap the first side 221 through after noise reduction for the first time from more than 211 through hole 213 of outer flap the first side, through the acoustical cotton 24 between outer flap the second side 212 and interior flap the second side 222, after noise reduction, from more than 222 through hole 213 of interior flap the second side, spread out of for the second time again, extended the length of the halt of noise sound wave in acoustical cotton 24, noise reduction is obvious.
In addition to the implementation, the utility model can also have other embodiments, and all employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of the utility model requirement.
Claims (4)
1. a denoising device, it is characterized in that, comprise rectangle housing and the polylith noise reducing plate that is arranged side by side in rectangle housing and two ends are fixedly connected with rectangle housing respectively, described noise reducing plate comprises outer flap, interior flap, outer flap strut bar, acoustical cotton and two end plates, described outer flap and interior flap are all bent into chevron pointing, outer flap and interior flap have the chevron-shaped cross-section structure of cavity in being fixedly connected into by the horizontal edge overlapping, the acoustical cotton being filled in cavity is bonding with outer flap medial surface and interior flap medial surface respectively, two end plates are fixedly connected with noise reducing plate two ends respectively, outer flap the first side and interior flap the second side are respectively equipped with a plurality of through holes.
2. denoising device as claimed in claim 1, is characterized in that, the support bar conforming to outer flap bending shape is supported in outer flap chevron pointing bending place.
3. denoising device as claimed in claim 1, is characterized in that, between described outer flap the first side and interior flap the second side, forms angle.
4. denoising device as claimed in claim 1, is characterized in that, described outer flap and interior flap form by aluminium sheet bending.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420203489.8U CN203805818U (en) | 2014-04-25 | 2014-04-25 | Noise reduction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420203489.8U CN203805818U (en) | 2014-04-25 | 2014-04-25 | Noise reduction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203805818U true CN203805818U (en) | 2014-09-03 |
Family
ID=51444614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420203489.8U Expired - Fee Related CN203805818U (en) | 2014-04-25 | 2014-04-25 | Noise reduction device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203805818U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439786A (en) * | 2019-08-30 | 2019-11-12 | 无锡锡压压缩机有限公司 | A kind of ventilation panel structure used for air compressor |
-
2014
- 2014-04-25 CN CN201420203489.8U patent/CN203805818U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439786A (en) * | 2019-08-30 | 2019-11-12 | 无锡锡压压缩机有限公司 | A kind of ventilation panel structure used for air compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140903 Termination date: 20160425 |