CN2924086Y - Silencer of blower - Google Patents
Silencer of blower Download PDFInfo
- Publication number
- CN2924086Y CN2924086Y CN 200620074272 CN200620074272U CN2924086Y CN 2924086 Y CN2924086 Y CN 2924086Y CN 200620074272 CN200620074272 CN 200620074272 CN 200620074272 U CN200620074272 U CN 200620074272U CN 2924086 Y CN2924086 Y CN 2924086Y
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- CN
- China
- Prior art keywords
- pipe
- blower
- baffler
- utility
- internal
- 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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Abstract
The utility model relates to a fan muffle which is used for the amortization of the fan and includes a windpipe, internal pipes and a flexible filling material. The internal pipe is sleeved with the windpipe. The utility model is characterized in that the internal pipes have a plurality of pipes; the flexible filling material is filled between each pipe and between the internal pipe and the windpipe; each internal pipe is supported in the windpipe by the flexible filling material. The utility model changes the original single internal pipe for amortization into multi-internal pipes for amortization, increases the contact area beaten the internal pipe and the soft sound absorption material, and reinforces the sound absorption efficiency. The multi-internal pipes are adopted, meanwhile, the utility model designs the pipe wall of the internal pipes into the net-type structure, which increases the absorption area.
Description
Technical field
The utility model relates to a kind of blower baffler, relates in particular to a kind of Roots blower baffler.
Background technique
Usually the noise of blower 70% is by intake grill and goes out to seal outer overflowing, in order to reduce the noise blower generally at intake grill and exhaust outlet claimed apparatus baffler all, baffler inside all adopts soft filler to reach sound-absorbing effect, separation layer adopts porous slab to support, gas a large amount of noises by baffler the time are absorbed by the soft filler in the separation layer, thereby reach the purpose of noise reduction.The used baffler of Roots blower is that the soft packing material by interior webmaster absorbs a large amount of noises and reaches noise reduction, so the sound absorbing material surface area is the important parameter of noise reduction.The big more flat effect of sound-absorbing surface area is good more, the sound-absorbing bore is little when the sound-absorbing area is identical, and to be better than the sound-absorbing bore big, this is because the noise at caliber center is good not as the sound-absorbing effect around the tube wall, also handled by sound-absorbing greater than the noise at caliber center after to a certain degree when caliber and just not flow out outside the baffler residually, noise is big.
The baffler of domestic and international various Roots blowers generally all is to adopt single internal tube formula structure at present, as shown in Figure 1, pipe 4 ', flexible packing material 3 ' in this structure comprises, the fan outlet footpath is identical with caliber in the baffler, the air-out hush pipe length of different bores is 8 times of bore, so the silencer length of big more bore is long more.If single tube type baffler in the Φ 250mm bore, then the length of baffler should be not less than 2 meters, but long more then occupation area of baffler and space are big more, to installing and the setting of wind machine room brings very big inconvenience, the big baffler of bore simultaneously, sound-absorbing effect also obviously descend.
Summary of the invention
The utility model is developed a kind of blower baffler at above-mentioned technology status, and this blower noise reduction floor space is little, good muffling effect.
The purpose of this utility model realizes by following measure:
A kind of blower baffler, comprise airduct, interior pipe and flexible packing, interior pipe box is loaded in the airduct, it is characterized in that described interior pipe has many, be filled with flexible packing between the pipe and between interior pipe and the airduct in each root, pipe is supported in the airduct by flexible packing in each root.
Pipe is the 2-6 root in of the present utility model, and flexible packing is soft sound absorbing material, as asbestos material.
The tube wall of interior pipe is a reticular structure, and interior pipe can be made by the net-shaped steel web plate.
The utility model compared to existing technology, it with original single internal tube noise reduction change into many in the pipe noise reductions, increased the area of contact between interior pipe and soft sound absorbing material, strengthened sound-absorbing efficient.In the pipe noise reduction, the utility model also is designed to reticular structure with the tube wall of interior pipe in how adopting, and the stephanoporate steel plate structure in increases the area in hole compared to existing technology, has increased the sound-absorbing area.
The utility model reduces the diameter of pipe in the sound-absorbing under the situation of effective noise reduction, also reduced silencer length.Therefore, reduce the floor space of baffler, improved sound-absorbing effect, reduced the noise decibel.
Description of drawings
Fig. 1 is the structural drawing of existing single internal tube formula baffler.
Fig. 2 is a structural representation of the present utility model.
Fig. 3 is that A-A of the present utility model is to view.
Fig. 4 is blower fan and baffler mounting point schematic representation.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described.
Among the figure, 1 suction silencer, 2 air-out bafflers, 3 soft fillers, 4 interior pipes, 5 airducts, 6 blower fans.
Shown in Fig. 2,3, blower baffler of the present utility model, comprise airduct 5, interior pipe 4 and flexible packing 3, interior pipe 4 is set in the airduct 5, pipe 4 has many in described, in each root between the pipe 4 and in be filled with flexible packing 3 between pipe 4 and the airduct 5, manage 4 in each root and be supported in the airduct 5 by flexible packing 3.
Pipe 4 can adopt the 2-6 root in of the present utility model, is 4 among the embodiment, and flexible packing 3 is soft sound absorbing material, as asbestos material.
The tube wall of pipe 4 is a reticular structure in the utility model, and interior pipe 4 can be made by the net-shaped steel web plate.
Blower baffler of the present utility model is when its intake grill end that is arranged at blower fan 6 is suction silencer 1; The outlet air end that is arranged at blower fan 6 is air-out baffler 2.
Blower baffler sound-absorbing effect of the present utility model is better than same product, is that example compares with Φ 250mm air-out baffler below:
Change single tube into multitube sound-absorbing simultaneously, just taking its area of interior pipe of 1 meter long Φ 250mm is 250*3.14=0.785, if make pipe in four of Φ 125mm into, its area is 4*125*3.14=1.57, and both have increased double to specific surface.
In addition, the area in its hole of stephanoporate steel plate accounts for 1/3 of steel plate area, and the area that makes its hole of net-shaped steel web plate into then arrives 4/5 of steel plate area, and the sound-absorbing area of ratio between two web plate is greater than 2.5 times of porous slab, and sound-absorbing effect is able to further improvement.
We are by actual test comparison, data such as following table.
| The design effective length | Bore | The sound-absorbing area | Survey noise after the noise reduction | |
| Single tube | 2m | Φ250mm | 1.57m 2 | 86dB |
| Four pipes | 1.18m | Φ125mm | 1.85m 2 | 79dB |
Analyze above data, the length ratio of two kinds of bafflers is 1: 1.7, and sound-absorbing area 1: 0.85, thus as can be seen shorten length 40% and the sound-absorbing area has increased by 15% on the contrary, sound-absorbing effect has also had bigger improvement, has reduced by 7 decibels.Therefore, the utility model has reduced floor space, has improved sound-absorbing effect, has reduced the noise decibel.
Claims (5)
1, a kind of blower baffler, comprise airduct, interior pipe and flexible packing, interior pipe box is loaded in the airduct, it is characterized in that described interior pipe has many, be filled with flexible packing between the pipe and between interior pipe and the airduct in each root, pipe is supported in the airduct by flexible packing in each root.
2, blower baffler according to claim 1 is characterized in that described interior pipe is the 2-6 root.
3, blower baffler according to claim 1 and 2 is characterized in that described flexible packing is soft sound absorbing material.
4, blower baffler according to claim 3 is characterized in that the tube wall of described interior pipe is a reticular structure.
5, blower baffler according to claim 4, it is characterized in that described in pipe make by the net-shaped steel web plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620074272 CN2924086Y (en) | 2006-06-27 | 2006-06-27 | Silencer of blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620074272 CN2924086Y (en) | 2006-06-27 | 2006-06-27 | Silencer of blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2924086Y true CN2924086Y (en) | 2007-07-18 |
Family
ID=38260517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620074272 Expired - Fee Related CN2924086Y (en) | 2006-06-27 | 2006-06-27 | Silencer of blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2924086Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275793A (en) * | 2015-09-10 | 2016-01-27 | 珠海格力电器股份有限公司 | Noise lowering device |
| CN106762717A (en) * | 2015-11-19 | 2017-05-31 | 张家港市宏盛贸易有限公司 | It is applied to the fan assembly of textile waste processing system |
| CN109475907A (en) * | 2016-07-21 | 2019-03-15 | 西门子医疗保健诊断公司 | Basin and high-speed air scheme |
-
2006
- 2006-06-27 CN CN 200620074272 patent/CN2924086Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275793A (en) * | 2015-09-10 | 2016-01-27 | 珠海格力电器股份有限公司 | Noise lowering device |
| CN106762717A (en) * | 2015-11-19 | 2017-05-31 | 张家港市宏盛贸易有限公司 | It is applied to the fan assembly of textile waste processing system |
| CN109475907A (en) * | 2016-07-21 | 2019-03-15 | 西门子医疗保健诊断公司 | Basin and high-speed air scheme |
| US11517948B2 (en) | 2016-07-21 | 2022-12-06 | Siemens Healthcare Diagnostics Inc. | Basin and high speed air solution |
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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: 20070718 Termination date: 20120627 |