CN203868001U - Silencing structure for fan air outlet - Google Patents
Silencing structure for fan air outlet Download PDFInfo
- Publication number
- CN203868001U CN203868001U CN201420309167.1U CN201420309167U CN203868001U CN 203868001 U CN203868001 U CN 203868001U CN 201420309167 U CN201420309167 U CN 201420309167U CN 203868001 U CN203868001 U CN 203868001U
- Authority
- CN
- China
- Prior art keywords
- silencing
- suction disc
- compound
- noise elimination
- fan outlet
- 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.)
- Withdrawn - After Issue
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- 230000001743 silencing Effects 0.000 title abstract description 15
- 150000001875 compounds Chemical class 0.000 claims abstract description 29
- 238000010276 construction Methods 0.000 claims abstract description 26
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 22
- 239000010959 steel Substances 0.000 claims abstract description 22
- 238000003379 elimination reaction Methods 0.000 claims description 30
- 239000003292 glue Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 abstract 4
- 238000000926 separation method Methods 0.000 abstract 2
- 230000000694 effects Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 4
- 230000029058 respiratory gaseous exchange Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 230000000644 propagated Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000001429 stepping Effects 0.000 description 1
Abstract
The utility model discloses a silencing structure for a fan air outlet. The silencing structure for the fan air outlet is composed of a steel structure frame, a building envelope structure, a flat rubber plate flange, a sound absorption board, a compound separation absorption board, a conical flow guide silencing board, silencing inserting pieces and an air outlet rainproof shutter. The steel structure frame is mounted on the building envelope structure between the fan air outlet and the air outlet rainproof shutter. The compound separation absorption board is mounted outside the steel structure frame, the sound absorption board is mounted on the building envelope structure in the steel structure frame, and a part of the building envelope structure is used as one part of the silencing structure. The conical flow guide silencing board is mounted in front of the fan air outlet, and silencing pieces are mounted on the two sides of the conical flow guide silencing board in parallel. Existing equipment is not dismounted, the building envelope structure is used as one part of the silencing structure, and therefore the silencing structure for the fan air outlet is small in air pressure loss, high in silencing capacity, low in construction cost, small in project amount, and simple in structure.
Description
Technical field
The utility model relates to a kind of noise control technique field, especially can effectively eliminate the fan outlet noise elimination structure that fan noise is propagated.
Background technique
In production enterprise, in order to guarantee the circulation of air in workshop, often the exhaust outlet of ventilating fan is arranged on architectural exterior-protecting construction, and fan noise is discharged towards periphery.Along with acoustic environment problem is more and more subject to people's concern and attention.Reformation of blower exhaust outlet makes it to reach the task of top priority that noise emission standard has become numerous enterprises.
Up to the present, the noise of fan outlet is controlled technique, mainly blower fan to be torn open move, step back, between fan outlet and the exhaust outlet of architectural exterior-protecting construction, air-out silencing apparatus is set, caused thus silencing apparatus air loss, particularly in blower fan, pipe-line system mounting point, limited to, be just difficult to blower fan to be torn open in the situation of moving, stepping back and produce and reset the series of problems such as blower fan, pipe-line system.Increase greatly thus that noise is controlled cost and engineering work load.
Summary of the invention
In order to overcome the noise of existing fan outlet, to control technique complicated, the deficiency that noise is controlled cost and engineering work load is larger, the utility model provides a kind of fan outlet noise elimination structure, existing equipment is not torn open and moved, the part using architectural exterior-protecting construction as noise elimination structure, not only air loss is little for this fan outlet noise elimination structure structure, there is higher sound deadening capacity, and construction cost is low, engineering work load is little, simple in structure.
The utility model solves the technological scheme that its technical problem adopts: a kind of fan outlet noise elimination structure, and by steel structure frame, architectural exterior-protecting construction, flat rubber plate flange, acoustic board, compoundly form every suction disc, conical flow guiding muffler plate, noise elimination inserted sheet, air port rain-proof blinds.Described steel structure frame is arranged on the architectural exterior-protecting construction between fan outlet and air port rain-proof blinds, outside steel structure frame, install compound every suction disc, on architectural exterior-protecting construction in steel structure frame, acoustic board is installed, this part architectural exterior-protecting construction is as a part for noise elimination structure.
Formation is by steel structure frame, the compound noise elimination structure shell forming every suction disc, architectural exterior-protecting construction.Acoustic board is installed on architectural exterior-protecting construction, and flat rubber plate flange, guide flow noise elimination plate, air-out blinds form complete acoustic wave filter structure.Owing to making full use of space, can form the silencing apparatus internal cavities that volume is larger, to improving the pressure loss of disappearance effect, reduction air-flow, provide primary condition.
Described flat rubber plate flange is arranged on fan outlet plane with parallel compound between suction disc; Remove the soft section of connecing of former fan outlet, use flat rubber plate flange, can expand compound distance between suction disc and building enclosure exhaust outlet as far as possible, increase volume and the disappearance effect of noise elimination structure.In the situation of condition license, make full use of the other architectural exterior-protecting construction of fan outlet at the scene, guarantee that this compound useful area every suction disc is the more than 5 times of fan outlet useful area.To form noise elimination breathing space effect, the noise of fan outlet is expanded via the exhaust outlet abrupt change of cross-section, the acoustic energy diffusion of noise, multiple/mono-that the acoustic pressure of unit area is divergence ratio in breathing space, thereby fully expanded step-down, deceleration, the low frequency of noise and part intermediate frequency being played to effective noise elimination effect, medium-high frequency is had to good noise elimination effect, is a kind of wide frequency spectrum noise elimination structure.The soundproof effect of noise elimination breathing space is relevant to the several times of the cross-sectional expansion of exhaust outlet ratio, and the divergence ratio several times of the abrupt change of cross-section are larger, and soundproof effect better.
Described conical flow guiding muffler plate is arranged on before fan outlet, and anechoic sheet is installed in parallel in conical flow guiding muffler plate two sides.The low frequency of noise and part intermediate frequency are played to effective noise elimination effect, prevent high frequency and lost efficacy.The conical flow guiding shape of muffler plate can reduce the air loss of blower fan effectively simultaneously.
Described compound every suction disc, be the composite structure of interior acoustic board, outer sound insulationg board, compound seam between suction disc is crammed with sealing sound insulation glue, the compound seam every suction disc and building structure, first fills damping material, with sealing the glue that insulates against sound, crams afterwards.Improve compound every between suction disc, compound noise insulation factor between suction disc and building structure, can reduce the impact of fan noise on production environment.
Current stormproof louvre available ventilation area is about 35% of the stormproof louvre gross area, the 60%(that the available ventilation area of use exhaust outlet stormproof louvre is about the exhaust outlet stormproof louvre gross area refers to a kind of air port rain-proof louver CN 202216371 U), air-out area is larger, and the air-out pressure loss is less.
The beneficial effects of the utility model are: 1, needn't existing equipment be torn open and be moved, and quick construction, cost is low, simple in structure.2, can not cause extra air loss.3, can there is higher sound deadening capacity, meet noise abatement standard.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is fan outlet noise elimination structure structure embodiment's normal cross section tectonic maps.
Fig. 2 is the plan view of Fig. 1.
Fig. 3 is the side-looking tectonic maps of Fig. 1.
1. steel structure frames in figure, 2. architectural exterior-protecting construction, 3. flat rubber plate flange, 4. acoustic board, 5. compound every suction disc, 6. conical flow guiding muffler plate, 7. noise elimination inserted sheet, 8. air port rain-proof blinds, 9. blower fan, 10. exhaust outlet.
Embodiment
In Fig. 1,2,3 illustrated embodiments, by steel structure frame (1), architectural exterior-protecting construction (2), flat rubber plate flange (3), acoustic board (4), compoundly form every suction disc (5), conical flow guiding muffler plate (6), noise elimination inserted sheet (7), air port rain-proof blinds (8).Described steel structure frame (1) is arranged on the architectural exterior-protecting construction (2) between blower fan (9) exhaust outlet (10) and air port rain-proof blinds (8), outside steel structure frame (1), install compound every suction disc (5), the upper acoustic board (4) of installing of architectural exterior-protecting construction (2) in steel structure frame (1), this part architectural exterior-protecting construction (2) is as a part for noise elimination structure.
Described flat rubber plate flange (3) is arranged on blower fan (9) exhaust outlet (10) plane with parallel compound between suction disc (5); This compound area every suction disc (5) is the more than 5 times of blower fan (9) exhaust outlet (10) area.It is front that described conical flow guiding muffler plate (6) is arranged on blower fan (9) exhaust outlet (10), and noise elimination inserted sheet (7) is installed in parallel in conical flow guiding muffler plate (6) two sides.
Described compound every suction disc (5), be the composite structure of interior acoustic board, outer sound insulationg board, compound seam between suction disc (5) is crammed with sealing sound insulation glue, the compound seam every suction disc (5) and architectural exterior-protecting construction (2), first fills damping material, with the sealing glue that insulates against sound, crams afterwards.
The setting of fan outlet noise elimination structure can be in accordance with the following steps: 1, remove former blower fan (9) exhaust outlet (10) and soft the connecing of exhaust outlet (10).
2, between blower fan (9) exhaust outlet (10) and former air-out blinds two side planes, lower flat and with the installation steel structure frame (1) of blower fan (8) mouthful plane, steel structure frame (1) is reliably connected with architectural exterior-protecting construction (2) by EXPANSION ANCHOR BOLTS.In the situation of condition license, expand the space in steel structure frame (1) at the scene as far as possible.
3, installation and blower fan (9) mouthful plane is compound every suction disc (5), and flat rubber plate flange (3) is arranged on blower fan (9) flange and compound on suction disc (5) with blower fan (9) mouthful plane.
4, changing air-out blinds is air port rain-proof blinds (8).
5, architectural exterior-protecting construction (2) plane in steel structure frame (1) and facade are all installed acoustic board (4).
6, conical flow guiding muffler plate (6), noise elimination inserted sheet (7) are installed.
7, install compoundly every suction disc (5), compound seam between suction disc (5) is crammed with sealing sound insulation glue, compound every suction disc (5) seam with architectural exterior-protecting construction (2), first fill damping material, with the sealing glue that insulates against sound, cram afterwards.
Should be appreciated that within not departing from scope of the present utility model, can make multiple change to above-described embodiment, and be applied to other occasions.All any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (4)
1. a fan outlet noise elimination structure, by steel structure frame, architectural exterior-protecting construction, flat rubber plate flange, acoustic board, compoundly every suction disc, conical flow guiding muffler plate, noise elimination inserted sheet, air port rain-proof blinds, form, it is characterized in that: described steel structure frame is arranged on the architectural exterior-protecting construction between fan outlet and air port rain-proof blinds, outside steel structure frame, install compound every suction disc, on architectural exterior-protecting construction in steel structure frame, acoustic board is installed, this part architectural exterior-protecting construction is as a part for noise elimination structure.
2. fan outlet noise elimination structure structure according to claim 1, is characterized in that: described flat rubber plate flange is arranged on fan outlet plane with parallel compound between suction disc; This compound area every suction disc is the more than 5 times of fan outlet area.
3. fan outlet noise elimination structure structure according to claim 2, is characterized in that: described conical flow guiding muffler plate is arranged on before fan outlet, and anechoic sheet is installed in parallel in conical flow guiding muffler plate two sides.
4. fan outlet noise elimination structure structure according to claim 3, it is characterized in that: described compound every suction disc, be the composite structure of interior acoustic board, outer sound insulationg board, compound seam between suction disc is crammed with sealing sound insulation glue, the compound seam every suction disc and building structure, first fill damping material, with sealing sound insulation glue, cram afterwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420309167.1U CN203868001U (en) | 2014-06-12 | 2014-06-12 | Silencing structure for fan air outlet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420309167.1U CN203868001U (en) | 2014-06-12 | 2014-06-12 | Silencing structure for fan air outlet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203868001U true CN203868001U (en) | 2014-10-08 |
Family
ID=51648960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420309167.1U Withdrawn - After Issue CN203868001U (en) | 2014-06-12 | 2014-06-12 | Silencing structure for fan air outlet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203868001U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298930A (en) * | 2014-06-12 | 2016-02-03 | 厦门嘉达声学技术有限公司 | Silencing structure for draught fan air outlet |
-
2014
- 2014-06-12 CN CN201420309167.1U patent/CN203868001U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298930A (en) * | 2014-06-12 | 2016-02-03 | 厦门嘉达声学技术有限公司 | Silencing structure for draught fan air outlet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141008 Effective date of abandoning: 20170714 |