CN106368986B - A kind of fans silencer - Google Patents
A kind of fans silencer Download PDFInfo
- Publication number
- CN106368986B CN106368986B CN201611107883.1A CN201611107883A CN106368986B CN 106368986 B CN106368986 B CN 106368986B CN 201611107883 A CN201611107883 A CN 201611107883A CN 106368986 B CN106368986 B CN 106368986B
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- China
- Prior art keywords
- outer cylinder
- level
- porous plate
- cone
- sound
- Prior art date
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
- F04D29/664—Sound attenuation by means of sound absorbing material
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The present invention provides a kind of fans silencer, porous tube in diffusion barrel is equipped with inside diffusion barrel, diffusion barrel lower part connects lower diffusing cone outer cylinder, is equipped with porous plate in lower diffusing cone on the inside of lower diffusing cone outer cylinder, lower diffusing cone outer cylinder lower end connects air inlet；Level-one sound-absorbing outer cylinder is equipped in diffusion barrel and lower diffusing cone outer cylinder at center, level-one sound-absorbing outer barrel is equipped with level-one noise reduction porous plate inner cylinder, and level-one sound-absorbing outer cylinder connects air inlet with level-one noise reduction porous plate inner cylinder lower end；Diffusion barrel top connects upper cone outer cylinder, and upper cone outer barrel is equipped with porous plate in upper cone, and upper cone outer cylinder connects air outlet with porous plate top in upper cone.The present invention uses the multiple noise reduction of impedance complex, does not increase the resistance of wind；Upper lower cone equipped with special angle；By very together, design has several overflow holes to shunt at porous plate in upper cone outer cylinder, upper cone, and erasure effect is obvious, is hardly damaged, and should not be blocked, easy for assemble or unload for optimum organization inside and outside two mufflers.
Description
Technical field
The present invention relates to muffling device technical field more particularly to a kind of muffler for fan.
Background technique
Currently, fan noise seriously affects the normal work study of people, existing muffler for fan is all monomer, resistance
, it is anti-, also there is impedance complex, but erasure effect is unobvious or perishable, maintenance cost is high, and dust mostly easily blocking makes
It is poor with effect.
Summary of the invention
In order to solve the above problem existing for existing muffler for fan, the utility model provides a kind of using impedance complex
The fans silencer of multiple noise reduction.
Present invention technical solution used for the above purpose is: a kind of fans silencer, sets inside diffusion barrel 12
There are porous tube 13 in diffusion barrel, is equipped with acoustical cotton 5 in diffusion barrel 12 and diffusion barrel between porous tube 13；The connection of 12 lower part of diffusion barrel
Lower diffusing cone outer cylinder 8 is equipped with porous plate 7, lower diffusing cone outer cylinder 8 and lower diffusing cone in lower diffusing cone on the inside of lower diffusing cone outer cylinder 8
Acoustical cotton 5 is equipped between interior porous plate 7, lower 8 lower end of diffusing cone outer cylinder connects air inlet 1；Diffusion barrel 12 and lower diffusing cone outer cylinder 8
It is equipped with level-one sound-absorbing outer cylinder 6 at interior center, is equipped with level-one noise reduction porous plate inner cylinder 4 inside level-one sound-absorbing outer cylinder 6, outside level-one sound-absorbing
Acoustical cotton 5 is equipped between cylinder 6 and level-one noise reduction porous plate inner cylinder 4, under level-one sound-absorbing outer cylinder 6 and level-one noise reduction porous plate inner cylinder 4
End connection air inlet 1, level-one sound-absorbing outer cylinder 6 and level-one noise reduction porous plate inner cylinder 4 are equipped with tap hole 10；12 top of diffusion barrel connects
It connects cone outer cylinder 14, is equipped with porous plate 15 in upper cone inside upper cone outer cylinder 14, it is more in upper cone outer cylinder 14 and upper cone
Acoustical cotton 5 is equipped in orifice plate 15, upper cone outer cylinder 14 connects air outlet 17 with 15 top of porous plate in upper cone.
Porous plate 15 is equipped with overflow hole 16 in the upper cone outer cylinder 14 and upper cone.
Water conservancy diversion gusset 9 is equipped between the diffusion barrel 12 and lower 8 junction of diffusing cone outer cylinder and level-one sound-absorbing outer cylinder 6.
The air inlet 1 connects lower diffusing cone outer cylinder 8,6 and of level-one sound-absorbing outer cylinder by inlet flange 2 and stiffener plate 3
Level-one noise reduction porous plate inner cylinder 4.
It is connect by diffusing cone with diffusion drum flange 11 between the lower diffusing cone outer cylinder 8 and diffusion barrel 12.
17 diameter of air outlet is twice or more of 1 diameter of import.
Fans silencer of the invention does not increase the resistance of wind using the multiple noise reduction of impedance complex；Equipped with special angle
Upper lower cone；By very together, in upper cone outer cylinder, upper cone there is design at porous plate for optimum organization inside and outside two mufflers
Several overflow holes shunt, and erasure effect is obvious, are hardly damaged, and should not be blocked, easy for assemble or unload.
Detailed description of the invention
Fig. 1 is fans silencer main structure figure of the present invention.
Fig. 2 is the B-B sectional structure chart of Fig. 1 fans silencer.
In figure: 1, air inlet, 2, inlet flange, 3, stiffener plate, 4, level-one noise reduction porous plate inner cylinder, 5, acoustical cotton, 6,
Level-one sound-absorbing outer cylinder, 7, porous plate in lower diffusing cone, 8, lower diffusing cone outer cylinder, 9, water conservancy diversion gusset, 10, tap hole, 11, diffusing cone
With diffusion drum flange, 12, diffusion barrel, 13, porous tube in diffusion barrel, 14, upper cone outer cylinder, 15, porous plate in upper cone, 16,
Overflow hole, 17, air outlet.
Specific embodiment
Fans silencer structure of the invention is as depicted in figs. 1 and 2, and porous tube in diffusion barrel is equipped with inside diffusion barrel 12
13, acoustical cotton 5 is equipped in diffusion barrel 12 and diffusion barrel between porous tube 13；12 lower part of diffusion barrel connects lower diffusing cone outer cylinder 8, under
It is equipped with porous plate 7 in lower diffusing cone on the inside of diffusing cone outer cylinder 8, is equipped between porous plate 7 in lower diffusing cone outer cylinder 8 and lower diffusing cone
Acoustical cotton 5, lower 8 lower end of diffusing cone outer cylinder connect air inlet 1, and air inlet 1 expands by the way that inlet flange 2 and the connection of stiffener plate 3 are lower
Dissipate cone outer cylinder 8, level-one sound-absorbing outer cylinder 6 and level-one noise reduction porous plate inner cylinder 4；In diffusion barrel 12 and lower diffusing cone outer cylinder 8 at center
Equipped with level-one sound-absorbing outer cylinder 6, level-one noise reduction porous plate inner cylinder 4, level-one sound-absorbing outer cylinder 6 and one are equipped with inside level-one sound-absorbing outer cylinder 6
Be equipped with acoustical cotton 5 between grade noise reduction porous plate inner cylinder 4, level-one sound-absorbing outer cylinder 6 connected with 4 lower end of level-one noise reduction porous plate inner cylinder into
Air port 1, level-one sound-absorbing outer cylinder 6 and level-one noise reduction porous plate inner cylinder 4 are equipped with tap hole 10, diffusion barrel 12 and lower diffusing cone outer cylinder
Water conservancy diversion gusset 9 is equipped between 8 junctions and level-one sound-absorbing outer cylinder 6；12 top of diffusion barrel connects upper cone outer cylinder 14, outside upper cone
14 inside of cylinder is equipped with porous plate 15 in upper cone, is equipped with acoustical cotton 5, epicone in upper cone outer cylinder 14 and upper cone in porous plate 15
External cylinder 14 connects air outlet 17 with 15 top of porous plate in upper cone, sets on porous plate 15 in upper cone outer cylinder 14 and upper cone
There is overflow hole 16,17 diameter of air outlet is twice or more of 1 diameter of import.
The present invention combines more than two mufflers together, i.e., the erasure effect for not increasing resistance, and having played, high speed
Air-flow flows into from air inlet 1 and carries out preliminary noise reduction by level-one noise reduction porous plate inner cylinder 4, and principle is to be clipped in level-one sound-absorbing outer cylinder 6
Acoustical cotton 5 between level-one noise reduction porous plate inner cylinder 4, which sucks buffer gas flow, reduces flow velocity, can reduce by 15 decibels by this section
Noise；Air-flow some air-flow in uphill process is diverted by tap hole 10, and air-flow further decreases flow velocity drop
It makes an uproar, the air-flow being diverted enters 8 sections of diffusion reductions of speed of porous plate 7 and lower diffusing cone outer cylinder, noise abatement, due under in lower diffusing cone
Porous plate 7 and lower diffusing cone outer cylinder 8 have certain angle in diffusing cone, ramp up air-flow, and in the effect of water conservancy diversion gusset 9
The lower rotation of diffusion outward rises through the hole in diffusion barrel on porous tube 13, attracts further deceleration by acoustical cotton 5, noise reduction；It inhales
Sound cotton 5 generates viscosity resistance, and air-flow is inhaled into, reduces flow velocity, reduce noise；When ascending air enters upper cone outer cylinder
14, porous plate 15 bores section in upper cone, has and is further attracted by acoustical cotton 5, and by several overflow holes 16, with air outlet
17 together flow out the stable low speed of wind, into atmosphere, can reduce noise, reach normal range (NR) or less.Lower 8 He of diffusing cone outer cylinder
It is connect by diffusing cone with diffusion drum flange 11 between diffusion barrel 12, is for ease of maintenaince dismantled.
Claims (5)
1. a kind of fans silencer, it is characterised in that: be equipped with porous tube (13) in diffusion barrel, diffusion barrel inside diffusion barrel (12)
(12) and in diffusion barrel acoustical cotton (5) are equipped between porous tube (13)；Diffusion barrel (12) lower part connects lower diffusing cone outer cylinder (8),
Porous plate (7) in lower diffusing cone, porous plate in lower diffusing cone outer cylinder (8) and lower diffusing cone are equipped on the inside of lower diffusing cone outer cylinder (8)
(7) acoustical cotton (5) are equipped between, lower diffusing cone outer cylinder (8) lower end connects air inlet (1)；Outside diffusion barrel (12) and lower diffusing cone
It is equipped with level-one sound-absorbing outer cylinder (6) at cylinder (8) interior center, is equipped with level-one noise reduction porous plate inner cylinder inside level-one sound-absorbing outer cylinder (6)
(4), between level-one sound-absorbing outer cylinder (6) and level-one noise reduction porous plate inner cylinder (4) be equipped with acoustical cotton (5), level-one sound-absorbing outer cylinder (6) and
Level-one noise reduction porous plate inner cylinder (4) lower end connects air inlet (1), level-one sound-absorbing outer cylinder (6) and level-one noise reduction porous plate inner cylinder (4)
It is equipped with tap hole (10)；Diffusion barrel (12) top connects upper cone outer cylinder (14), and epicone is equipped with inside upper cone outer cylinder (14)
Internal porous plate (15), equipped with acoustical cotton (5), upper cone outer cylinder in porous plate (15) in upper cone outer cylinder (14) and upper cone
(14) it is connected air outlet (17) with porous plate in upper cone (15) top, porous plate (15) in upper cone outer cylinder (14) and upper cone
It is equipped with overflow hole (16).
2. a kind of fans silencer according to claim 1, it is characterised in that: outside the diffusion barrel (12) and lower diffusing cone
Water conservancy diversion gusset (9) are equipped between cylinder (8) junction and level-one sound-absorbing outer cylinder (6).
3. a kind of fans silencer according to claim 1, it is characterised in that: the air inlet (1) passes through inlet flange
(2) and stiffener plate (3) connects lower diffusing cone outer cylinder (8), level-one sound-absorbing outer cylinder (6) and level-one noise reduction porous plate inner cylinder (4).
4. a kind of fans silencer according to claim 1, it is characterised in that: the lower diffusing cone outer cylinder (8) and diffusion
It is connect by diffusing cone with diffusion drum flange (11) between cylinder (12).
5. a kind of fans silencer according to claim 1, it is characterised in that: air outlet (17) diameter is air inlet
(1) twice or more of diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611107883.1A CN106368986B (en) | 2016-12-06 | 2016-12-06 | A kind of fans silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611107883.1A CN106368986B (en) | 2016-12-06 | 2016-12-06 | A kind of fans silencer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106368986A CN106368986A (en) | 2017-02-01 |
| CN106368986B true CN106368986B (en) | 2019-02-01 |
Family
ID=57891436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611107883.1A Active CN106368986B (en) | 2016-12-06 | 2016-12-06 | A kind of fans silencer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106368986B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3437894B2 (en) * | 1996-07-01 | 2003-08-18 | 株式会社共立 | How to attach a silencer to a blower pipe |
| KR100439864B1 (en) * | 2001-05-15 | 2004-07-14 | 서명준 | A ventilator's eliminating device of noise |
| CN201786771U (en) * | 2010-09-17 | 2011-04-06 | 浠水县四方饲料有限公司 | Fan silencer |
| CN202690540U (en) * | 2012-05-07 | 2013-01-23 | 山东省临风鼓风机有限公司 | Broadband silencer for fan |
| CN104455900B (en) * | 2014-11-28 | 2016-07-06 | 连云港正航电力节能技术有限公司 | A kind of multifunctional composite pipe muffler |
| KR20160103878A (en) * | 2015-02-25 | 2016-09-02 | 원광대학교산학협력단 | Resonance type silencer for noise reduction |
-
2016
- 2016-12-06 CN CN201611107883.1A patent/CN106368986B/en active Active
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| Publication number | Publication date |
|---|---|
| CN106368986A (en) | 2017-02-01 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20181218 Address after: No. 23 Fenhe Street, Yaodu District, Linfen City, Shanxi Province, 041000 Applicant after: Shanxi Datang International Linfen Thermoelectricity Co., Ltd. Address before: 116110 Huanfeng village, Dawei Town, Jinzhou District, Dalian, Liaoning Applicant before: Yao Junfu |
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| GR01 | Patent grant |