CN203868001U - Silencing structure for fan air outlet - Google Patents

Silencing structure for fan air outlet Download PDF

Info

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Withdrawn - After Issue
Application number
CN201420309167.1U
Other languages
Chinese (zh)
Inventor
宋继萍
何鹭凤
林超
陈明钊
林嘉祥
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
XIAMEN JIADA OF ACOUSTIC TECHNOLOGY ENGINEERING Co Ltd
Original Assignee
XIAMEN JIADA OF ACOUSTIC TECHNOLOGY ENGINEERING Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by XIAMEN JIADA OF ACOUSTIC TECHNOLOGY ENGINEERING Co Ltd filed Critical XIAMEN JIADA OF ACOUSTIC TECHNOLOGY ENGINEERING Co Ltd
Priority to CN201420309167.1U priority Critical patent/CN203868001U/en
Application granted granted Critical
Publication of CN203868001U publication Critical patent/CN203868001U/en
Withdrawn - After Issue legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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

Fan outlet noise elimination structure
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.
CN201420309167.1U 2014-06-12 2014-06-12 Silencing structure for fan air outlet Withdrawn - After Issue CN203868001U (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
CN102797405B (en) Ventilating and sound insulating secondary frame sectional material
CN203160760U (en) Noise abatement machine room
CN202249622U (en) Ventilating noise-elimination window for transformer station
CN108118811B (en) The modular ventilating curtain wall system of low noise
CN205383734U (en) Low noise new trend and exhaust system and acoustics room that has this system
CN203868001U (en) Silencing structure for fan air outlet
CN103590729B (en) Ventilation sound proof window
CN205713879U (en) A kind of noise elimination shutter system and louvre blade therein
CN209229985U (en) A kind of air-conditioning noise elimination air channel structure of anechoic room
CN204006567U (en) A kind of electric layer ventilating opening shock-absorbing and noise-eliminating device
CN103711338B (en) A kind of super-silent diesel generating set machine room noise control method
CN203701886U (en) Micro-through-hole double-cavity silencing louvers
CN105351090A (en) Stereoscopic stacking ultra-silence power source for standard containers
CN105298930B (en) Fan outlet noise elimination structure
CN203716542U (en) Diesel generating set machine room
CN203462967U (en) Rainproof noise eliminating louver blades and rain-proof and noise eliminating louver for power generation unit
CN209819849U (en) Folded plate externally-hung ventilation shutter silencer for gas medium-pressure regulating box
CN102570332A (en) Noise control method for unground transformer substation
CN202659590U (en) Noise-reducing soundproof box for fan
CN205207280U (en) Spinning workshop noise killer
CN104110813A (en) Shock-absorption and noise-eliminating device at electricity generating layer ventilation opening
CN203797235U (en) Meshing cavity cotton-free muffler
CN203928193U (en) A kind of domestic air conditioning noise-proofing off-premises station
CN210563559U (en) Sound insulation device
CN202467259U (en) Low-noise and mobile combination type generating house

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