CN201388105Y - Compound air-inlet sound eliminator - Google Patents
Compound air-inlet sound eliminator Download PDFInfo
- Publication number
- CN201388105Y CN201388105Y CN200920041893U CN200920041893U CN201388105Y CN 201388105 Y CN201388105 Y CN 201388105Y CN 200920041893 U CN200920041893 U CN 200920041893U CN 200920041893 U CN200920041893 U CN 200920041893U CN 201388105 Y CN201388105 Y CN 201388105Y
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- China
- Prior art keywords
- air
- plate
- noise
- wind scoop
- utility
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- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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- Exhaust Silencers (AREA)
Abstract
The utility model relates to a compound air-inlet sound eliminator, comprising an upper part and a lower part; the upper part is an S-shaped air channel which is composed of a wind scoop (1) and a baffle (2), the lower part is an air channel which is formed by arranging herringbone folding sheets at interval. The wind scoop at the upper part can effectively prevent the noise from directly escaping towards to inclined upperside, therefore, the effect of noise reduction is good; the folding sheets at the lower part are compact and rain-proofing, and have the functions of rain-proofing, ventilation and noise reduction. After tests and practical usage, the sound eliminator can reduce the noise at an air inlet of a middle-type generating set to below 75db, thereby completely being in accordance with the requirements of environment standard.
Description
Technical field
The utility model relates to the denoising device of generating set, is specifically related to a kind of air intake muffler of generating set.
Background technology
Modern society is more and more stronger to the dependence of electric power, and various electric equipments need the stable supply of electric power that continues, and is especially commercial, bank, hospital facility.But because energy scarcity and peak of power consumption undersupply often have and stop powering-off state.Generating set this moment power supply has in support guaranteed the normal operation of equipment.But it is very big to produce noise during generating set work, has directly influenced people's work and life, and market presses for the as far as possible little generating set of noise.The air inlet muffler is an important device of improving the quiet case anti-acoustic capability of generating set.
The air inlet sound-attenuating system of the quiet case of currently marketed generating set as shown in Figure 3, existing air intake muffler is spaced by herringbone tabs 6 and forms the air channel, arrow is the direction of noise leakage among the figure, and the noise on this structure air inlet top leaks bigger, and noise reduction is not good.
The content of utility model
The utility model is at the not good shortcoming of air inlet sound-attenuating system air inlet top noise reduction of the existing quiet case of generating set, carried out improving research, a kind of compound air intake muffler is provided, and the top wind scoop has effectively intercepted noise and has directly leaked obliquely upward, excellent noise reduction effect; Bottom tabs compactness, rainproof, and incoming air area is big.
The technical solution of the utility model is as follows:
A kind of compound air intake muffler comprises two parts up and down, and S shape air channel is formed by wind scoop 1 and baffle plate 2 in top, and the bottom is spaced by herringbone tabs 3 and forms the air channel.
Its further technical scheme is:
Described wind scoop 1 is made of metallic plate, its inboard acoustical cotton that pastes, and the outside is plate-air-perforated plate construction.
And its further technical scheme is:
Described baffle plate 2 is porous plate-air-perforated plate construction.
And its further technical scheme is:
Described tabs 3 is made up of outer flap 4 and infolding piece 5; Outer flap 4 is plate-air-perforated plate construction; Infolding piece 5 is porous plate-air-perforated plate construction.
Useful technique effect of the present utility model is:
It is wind scoop that the utility model adopts top, and the bottom is the compound air intake acoustic wave filter structure of tabs.The top wind scoop has effectively intercepted noise and has directly leaked obliquely upward, excellent noise reduction effect; Bottom tabs compactness, rainproof, and incoming air area is big.
The utility model is mixed flange and can be installed on the quiet case of generating set, or on the power machine room wall, has functions such as rainproof, ventilation, noise reduction.By test and actual the use, can drop to below the 75db complete environmentally acceptable requirement for the air inlet noise of medium-sized generating set.
Description of drawings
Fig. 1 is a main pseudosection of the present utility model.
Main pseudosection when Fig. 2 is the utility model installation.
Fig. 3 is the main pseudosection when having the installation of air intake muffler now.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described further.
Fig. 1 is a main pseudosection of the present utility model.
As shown in Figure 1, compound air intake muffler of the present utility model comprises two parts up and down.
A S shape air channel is formed by wind scoop 1 and baffle plate 2 in top, can intercept noise directly leaking obliquely upward effectively.Wind scoop 1 is made of iron plate, its inner acoustical cotton that pastes, and thickness is 25mm, and plate-air-porous plate sound absorption structure is adopted in the outside, and sound absorption structure thickness is 30mm, and air layer is filled rock wool, and acoustic absorptivity is 0.8; Baffle plate 2 adopts porous plate-air-porous plate sound absorption structure, and air layer is filled rock wool; The draught area that wind scoop 1 and baffle plate 2 are formed air channels is not less than the draught area in the wind scoop 1.
The bottom is spaced by herringbone tabs 3 and forms the air channel.Sound absorption length is 400mm, and tabs thickness is 30mm, and the air channel width is 70～85mm, and the tabs angle is 75 °～95 °.Tabs 3 is made up of outer flap 4 and infolding piece 5, and outer flap 4 adopts plate-air-porous plate sound absorption structure, and upside is a steel plate, and downside is a stephanoporate steel plate, and air layer is filled rock wool, and acoustic absorptivity is 0.8, has the stormproof louvre window function; Infolding piece 5 adopts porous plate-air-porous plate sound absorption structure, and air layer is filled rock wool, has more effectively played functions such as sound insulation, sound absorption, noise elimination.
Arrow is the direction of wind path among Fig. 1.
Main pseudosection when Fig. 2 is the utility model installation.
As shown in Figure 2, when actual installation, baffle plate 2 can be directly installed on the casing top of generating set.Arrow is the direction of noise leakage among Fig. 2, and the height of baffle plate 2 is decided according to noise source, to guarantee to intercept noise directly leaking obliquely upward.
Above-described only is preferred implementation of the present utility model, and the utility model is not limited to above embodiment.Be appreciated that those skilled in the art under the prerequisite that does not break away from spirit of the present utility model and design, can make other improvement and variation.
Claims (4)
1. compound air intake muffler is characterized in that: comprise two parts up and down, S shape air channel is formed by wind scoop (1) and baffle plate (2) in top, and the bottom is spaced by herringbone tabs (3) and forms the air channel.
2. compound air intake muffler according to claim 1 is characterized in that: described wind scoop (1) is made of metallic plate, its inboard acoustical cotton that pastes, and the outside is plate-air-perforated plate construction.
3. compound air intake muffler according to claim 1 is characterized in that: described baffle plate (2) is porous plate-air-perforated plate construction.
4. compound air intake muffler according to claim 1 is characterized in that: described tabs (3) is made up of outer flap (4) and infolding piece (5); Outer flap (4) is plate-air-perforated plate construction; Infolding piece (5) is porous plate-air-perforated plate construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920041893U CN201388105Y (en) | 2009-03-25 | 2009-03-25 | Compound air-inlet sound eliminator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920041893U CN201388105Y (en) | 2009-03-25 | 2009-03-25 | Compound air-inlet sound eliminator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201388105Y true CN201388105Y (en) | 2010-01-20 |
Family
ID=41580649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920041893U Expired - Fee Related CN201388105Y (en) | 2009-03-25 | 2009-03-25 | Compound air-inlet sound eliminator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201388105Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114922861A (en) * | 2022-05-24 | 2022-08-19 | 深圳市市政工程总公司 | Concrete pumping room circulating air system with noise reduction function |
-
2009
- 2009-03-25 CN CN200920041893U patent/CN201388105Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114922861A (en) * | 2022-05-24 | 2022-08-19 | 深圳市市政工程总公司 | Concrete pumping room circulating air system with noise reduction function |
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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: 20100120 Termination date: 20170325 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |