CN112146256A - Air pipeline silencing method - Google Patents
Air pipeline silencing method Download PDFInfo
- Publication number
- CN112146256A CN112146256A CN202010810246.0A CN202010810246A CN112146256A CN 112146256 A CN112146256 A CN 112146256A CN 202010810246 A CN202010810246 A CN 202010810246A CN 112146256 A CN112146256 A CN 112146256A
- Authority
- CN
- China
- Prior art keywords
- air
- outlet
- silencing
- pipeline
- air 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.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
- F24F13/0245—Manufacturing or assembly of air ducts; Methods therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/242—Sound-absorbing material
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Duct Arrangements (AREA)
Abstract
A noise reduction method for an air pipeline comprises the following steps that (1) a plurality of air outlets are arranged at an outlet of the air pipeline, an air outlet cover for adjusting air output is arranged on each air outlet, and the air output of each air outlet is convenient to adjust through the air outlet cover; (2) the air output of the air outlets is adjusted, the air output of one air outlet is reduced, so that the flowing air generates turbulence when passing through the air outlet with smaller air output, and the air noise of the air flow discharged from other air outlets is reduced; (3) install the hush pipe on air conduit, the hush pipe is installed at the front end of air outlet, has more position of buckling among the air conduit, and the air current shakes easily after the position of buckling, produces wind and makes an uproar, and after the air current that has wind and make an uproar passed through the hush pipe, the hush pipe absorbs most wind and makes an uproar in the air current to prevent that wind makes an uproar from passing through the air outlet and discharging, reach the amortization purpose.
Description
Technical Field
The invention belongs to the field of silencing methods, and particularly relates to a silencing method for an air pipeline.
Background
The fresh air system is a set of independent air processing system consisting of an air supply system and an air exhaust system, and is divided into a pipeline type fresh air system and a pipeline-free fresh air system, wherein the pipeline type fresh air system consists of a fresh air fan and pipeline accessories, outdoor air is purified by the fresh air fan and is led into a room, and the indoor air is exhausted by a pipeline; the ductless fresh air system consists of a fresh air fan, and the fresh air fan is used for purifying outdoor air and guiding the outdoor air into a room; pipeline formula new trend system is more suitable for industry, large tracts of land office area or classroom because the engineering volume uses greatly, and new trend system when office area or classroom use, need reduce the noise as far as possible, prevents that the noise that new trend system during operation produced from causing the influence to indoor personnel's work, study.
At present, new trend system on the market adopts single air outlet mostly, forms wind easily in the position of air outlet and makes an uproar to at the outside cladding soundproof cotton of new trend pipeline, reduce the noise that new trend pipeline produced, but soundproof cotton need often change in order to guarantee the syllable-dividing effect, cause the great problem of induced draft system input cost, and the soundproof cotton cladding is outside the pipeline, makes the area of pipeline bigger easily, reduces the interior space.
Disclosure of Invention
In view of the above disadvantages, the technical problem to be solved by the present invention is to provide an air duct noise reduction method, which reduces the wind noise in the air outlet of the air duct and the air duct by changing the structure of the air duct, thereby reducing the influence on indoor workers and students when the fresh air system supplies air, and making the structure of the air duct more reasonable and effectively reducing the wind noise in the air duct.
In order to solve the technical problems, the invention adopts the technical scheme that,
a method for silencing an air duct includes the steps of,
(1) a plurality of air outlets are arranged at the outlet of the air pipeline;
(2) adjusting the air output of the air outlets, and reducing the air output of one air outlet;
(3) the air pipeline is provided with a silencing pipe which is arranged at the front end of the air outlet;
(4) and a pipeline end cover is covered at the tail end of the air pipeline.
Further, the air outlet with the air output reduced in the step (2) is the air outlet closest to the air inlet of the air pipe.
Further, in the step (2), the air outlet closest to the air inlet is closed.
Furthermore, the air outlet is of a three-way structure so as to form turbulent flow at the air outlet with smaller air output amount and prevent air flow from generating wind noise at other air outlets.
Furthermore, a silencing column is arranged in the silencing pipe in the step (3), and can absorb air vibration at the corner of the air pipeline so as to reduce the wind speed and absorb wind noise of airflow passing through the silencing pipe.
Furthermore, the diameter of the silencing pipe is larger than that of the air pipeline, so that the end part of the silencing column and the inner wall of the silencing column are positioned on the same plane.
Furthermore, the distance between the silencing pipe and the nearest air outlet is 0-50cm, the distance between adjacent air outlets is 0-10cm, and the distance between the air outlet nearest to the pipeline end cover and the pipeline end cover is 8-9 cm.
The invention has the beneficial effects that the air pipeline has more bent parts, the air flow is easy to vibrate after passing through the bent parts to generate wind noise, and after the air flow with the wind noise passes through the silencing pipe, the silencing pipe absorbs most of the wind noise in the air flow, so that the wind noise is prevented from being discharged through the air outlet, and the silencing purpose is achieved.
Drawings
Fig. 1 is a schematic structural diagram of the invention.
Fig. 2 is a schematic structural view of the silencer duct.
Figure 3 is a cross-sectional view of the outlet.
Reference numerals: the air pipe comprises an air pipe 1, an air outlet 2, a silencing pipe 3, an air outlet cover 4, an air outlet plug 8, an air volume adjusting block 9, a silencing joint 1a, a silencing pipe shell 2a, a silencing piece 3a, a first silencing column ring 4a, a second silencing column ring 5a, a first silencing column 6a and a second silencing column 7 a.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
A method for silencing an air duct includes the steps of,
(1) a plurality of air outlets 2 are arranged at the outlet of the air pipeline 1, an air outlet cover 4 for adjusting the air output is arranged on the air outlets 2, and the air output of the air outlets 2 can be adjusted conveniently through the air outlet cover 4;
(2) the air output of the air outlets 2 is adjusted, the air output of one air outlet 2 is reduced, so that the flowing air generates turbulence when passing through the air outlet 2 with smaller air output, and the air noise of the air flow discharged from other air outlets 2 is reduced;
(3) the air pipe 1 is provided with the silencing pipe 3, the silencing pipe 3 is arranged at the front end of the air outlet 2, a plurality of bent parts exist in the air pipe 1, airflow is easy to vibrate after passing through the bent parts to generate wind noise, and after the airflow with the wind noise passes through the silencing pipe 3, the silencing pipe 3 absorbs most of the wind noise in the airflow so as to reduce the wind noise;
(4) the tail end of the air pipeline is covered with the pipeline end cover, the wind noise rebounds after being reflected by the pipeline end cover, and the wind noise is attenuated in the reflection process, so that the wind noise at the air outlet part is reduced.
The air outlet 2 with the air output reduced in the step (2) is the air outlet 2 closest to the air inlet of the air pipe 1, and turbulence is formed in the air outlet 2 at the forefront end, so that the turbulence is convenient for disturbing the air speed of the air outlet 2 at the back, the air speed of the air outlet 2 is reduced, and the wind noise generated on the air outlet 2 is reduced.
In the step (2), the air outlet 2 closest to the air inlet is closed, no air is discharged from the air outlet 2 at the foremost end, and turbulence formed at the air outlet 2 is large, so that the wind noise at the rear air outlet 2 is reduced.
The air outlet 2 is of a three-way structure so as to form turbulent flow at the air outlet with smaller air output amount and prevent air flow from generating wind noise at other air outlets.
And (4) a silencing column is arranged in the silencing pipe 3 in the step (3), and can absorb air vibration at the corner of the air pipeline 1 so as to reduce the wind speed and absorb wind noise of airflow passing through the silencing pipe.
The diameter of the silencing pipe 3 is larger than that of the air pipeline 1, so that the end part of the silencing pipe 3 and the inner wall of the silencing column are on the same plane.
In some preferred modes, the air outlet orientations of the air outlets 2 are consistent, that is, the ports of the adjacent air outlets 2 are located in the same plane, so that the air flow is prevented from forming a vortex in the mute pipeline 1, the turbulent flow effect of the air outlet 2 at the farthest end is reduced, and the noise reduction performance of other air outlets 2 is further influenced.
In some preferred modes, a pipeline end cover 3 is installed on the air outlet 2 at the rearmost end, and the end of the air pipeline 1 is blocked by the pipeline end cover 3, so that the air flow forms a backflow at the end of the air pipeline 1, and the air flow speed of the air outlet 2 is also reduced.
In some preferred modes, muffler pipe 3 includes amortization joint 1a, amortization tube shell 2a and amortization piece 3a, amortization piece 3a fixed mounting is in amortization tube shell 2a, amortization joint 1a fixed mounting is at the both ends of amortization tube shell 2a, so that be connected to the main pipeline with the amortization pipe, setting through amortization piece 3a, be convenient for adsorb the noise that forms in the amortization pipe A, reduce the wind noise at this amortization nest of tubes air intake position, and the setting of amortization piece 3, make the area of pipeline inner wall increase, the fluid velocity of flow is lower on the position that is close to the pipe wall, thereby reduce the velocity of flow of air current in the pipeline, thereby reduce.
Furthermore, the inner wall of the silencing piece 3a is uniformly connected with a first silencing column ring 4a and a second silencing column ring 5a, the first silencing column ring 4a and the second silencing column ring 5a are arranged in a staggered manner, namely, a second silencing column ring 5a is arranged between the adjacent first silencing column rings 4a, a first silencing column ring 4a is arranged between the adjacent second silencing column rings 5a, the first silencing column ring 4a comprises uniformly distributed first silencing columns 6a, the second silencing column ring 5a comprises uniformly distributed second silencing columns 7a, the first silencing columns 6a and the second silencing columns 7a are also arranged in a staggered manner, namely, the second silencing columns 7a are positioned on a median plane between the two first silencing columns 6a, preferably, the silencing piece 3a is made of silencing cotton, the area of the silencing inner wall of the silencing piece 3a is increased through the first silencing column rings 4a and the second silencing column rings 5a which are arranged in a staggered manner, thereby reduce the air current velocity of flow, reduce wind and make an uproar to owing to crisscross setting, can produce the vortex, thereby further reduce the air current velocity of flow, reduce wind and make an uproar.
In some preferred modes, the wind gap cover 4 comprises a wind gap plug 8 and an air volume adjusting block 9, the air volume adjusting block 9 is rotatably installed in the wind gap plug 8, the air volume of the wind gap cover 7 is adjusted by rotating the air volume adjusting block 9, the wind gap plug 8 is detachably installed at the wind outlet 2, and the air volume of the wind outlet 2 is adjusted by the sealing plug 8.
The distance between the silencing pipe and the nearest air outlet is 0-50cm, the distance between adjacent air outlets is 0-10cm, and the distance between the air outlet nearest to the pipeline end cover and the pipeline end cover is 8-9 cm.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention; thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Although the terms corresponding to the reference numerals in the figures are used more herein, the possibility of using other terms is not excluded; these terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Claims (8)
1. A method for silencing an air duct, comprising the steps of,
(1) a plurality of air outlets are arranged at the outlet of the air pipeline;
(2) adjusting the air output of the air outlets, and reducing the air output of one air outlet;
(3) the air pipeline is provided with a silencing pipe which is arranged at the front end of the air outlet;
(4) and a pipeline end cover is covered at the tail end of the air pipeline.
2. The method of claim 1, wherein the air outlet for reducing the air output in step (2) is the air outlet nearest to the air inlet of the air tube.
3. The method of claim 2, wherein in step (2), the outlet nearest to the inlet is closed.
4. The method of claim 1, wherein the outlet is a three-way structure, and a cross-sectional area of the air flow passing through the outlet changes.
5. The method as claimed in claim 1, wherein the silencing pipe in step (3) is provided with a silencing column, and the silencing column can absorb air vibration at the corner of the air pipe to reduce wind speed and absorb wind noise of the airflow passing through the silencing pipe.
6. The method of claim 5, wherein the diameter of the silencer duct is larger than the diameter of the air duct so that the end of the silencer cylinder is flush with the inner wall of the silencer cylinder.
7. The air duct silencing method of claim 1, wherein the outlet air direction of the air outlet is consistent.
8. The method of claim 1, wherein the distance between the silencer duct and the nearest outlet is 0-50cm, the distance between adjacent outlets is 0-10cm, and the distance between the outlet nearest to the end cap of the pipeline and the end cap of the pipeline is 8-9 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010810246.0A CN112146256B (en) | 2020-08-13 | 2020-08-13 | Air pipeline silencing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010810246.0A CN112146256B (en) | 2020-08-13 | 2020-08-13 | Air pipeline silencing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112146256A true CN112146256A (en) | 2020-12-29 |
| CN112146256B CN112146256B (en) | 2022-10-11 |
Family
ID=73888010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010810246.0A Active CN112146256B (en) | 2020-08-13 | 2020-08-13 | Air pipeline silencing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112146256B (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2366760Y (en) * | 1999-03-04 | 2000-03-01 | 河南豫秦电力实业有限公司 | Silencer adapted for air conditioner |
| US6209319B1 (en) * | 1998-09-28 | 2001-04-03 | Honda Giken Kogyo Kabushiki Kaisha | Pipe assembly having inner and outer pipes |
| JP2002039064A (en) * | 2000-07-27 | 2002-02-06 | Meka E Esutei:Kk | Blower muffler |
| WO2005072122A2 (en) * | 2004-01-20 | 2005-08-11 | Carrier Corporation | Method and system for automatically optimizing zone duct damper positions |
| KR20080000158U (en) * | 2008-01-19 | 2008-02-12 | 김석수 | Environmental Air distributor and diffuser |
| CN103307717A (en) * | 2012-03-09 | 2013-09-18 | 昆山市三星机械制造有限公司 | Air duct with improved structure for air conditioner |
| CN203824643U (en) * | 2014-04-02 | 2014-09-10 | 深圳麦克维尔空调有限公司 | Noise testing device for coil pipe of blower fan |
| CN105780973A (en) * | 2016-05-06 | 2016-07-20 | 广东省第建筑工程有限公司 | Noise-reduction and passing-air-decompression pipe for high partitions of indoor offices of buildings and application thereof |
| CN206377805U (en) * | 2016-12-05 | 2017-08-04 | 杭州卡丽智能科技股份有限公司 | A kind of new Wind Engineering mute pipe road system |
| CN206624424U (en) * | 2017-04-10 | 2017-11-10 | 山东烟叶复烤有限公司沂水复烤厂 | A kind of pneumatic suction and conveying device |
| CN206803440U (en) * | 2017-02-28 | 2017-12-26 | 大金工业株式会社 | Airduct and air treatment system |
| CN107702266A (en) * | 2017-11-02 | 2018-02-16 | 苏州纽塔克环境科技有限公司 | A kind of split type VMC of internal-external machine and installation method |
| US20180306679A1 (en) * | 2017-04-19 | 2018-10-25 | Edward Sobek | Biological Air Sampling Device |
| CN208680121U (en) * | 2018-08-08 | 2019-04-02 | 天津精工华晖制版技术开发有限公司 | A kind of air intake device of energy-saving and noise-reducing |
| CN110899015A (en) * | 2019-08-29 | 2020-03-24 | 重庆嘉天环保工程有限公司 | A wind that makes an uproar send spray gun for pressing down dirt removes haze |
-
2020
- 2020-08-13 CN CN202010810246.0A patent/CN112146256B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6209319B1 (en) * | 1998-09-28 | 2001-04-03 | Honda Giken Kogyo Kabushiki Kaisha | Pipe assembly having inner and outer pipes |
| CN2366760Y (en) * | 1999-03-04 | 2000-03-01 | 河南豫秦电力实业有限公司 | Silencer adapted for air conditioner |
| JP2002039064A (en) * | 2000-07-27 | 2002-02-06 | Meka E Esutei:Kk | Blower muffler |
| WO2005072122A2 (en) * | 2004-01-20 | 2005-08-11 | Carrier Corporation | Method and system for automatically optimizing zone duct damper positions |
| KR20080000158U (en) * | 2008-01-19 | 2008-02-12 | 김석수 | Environmental Air distributor and diffuser |
| CN103307717A (en) * | 2012-03-09 | 2013-09-18 | 昆山市三星机械制造有限公司 | Air duct with improved structure for air conditioner |
| CN203824643U (en) * | 2014-04-02 | 2014-09-10 | 深圳麦克维尔空调有限公司 | Noise testing device for coil pipe of blower fan |
| CN105780973A (en) * | 2016-05-06 | 2016-07-20 | 广东省第建筑工程有限公司 | Noise-reduction and passing-air-decompression pipe for high partitions of indoor offices of buildings and application thereof |
| CN206377805U (en) * | 2016-12-05 | 2017-08-04 | 杭州卡丽智能科技股份有限公司 | A kind of new Wind Engineering mute pipe road system |
| CN206803440U (en) * | 2017-02-28 | 2017-12-26 | 大金工业株式会社 | Airduct and air treatment system |
| CN206624424U (en) * | 2017-04-10 | 2017-11-10 | 山东烟叶复烤有限公司沂水复烤厂 | A kind of pneumatic suction and conveying device |
| US20180306679A1 (en) * | 2017-04-19 | 2018-10-25 | Edward Sobek | Biological Air Sampling Device |
| CN107702266A (en) * | 2017-11-02 | 2018-02-16 | 苏州纽塔克环境科技有限公司 | A kind of split type VMC of internal-external machine and installation method |
| CN208680121U (en) * | 2018-08-08 | 2019-04-02 | 天津精工华晖制版技术开发有限公司 | A kind of air intake device of energy-saving and noise-reducing |
| CN110899015A (en) * | 2019-08-29 | 2020-03-24 | 重庆嘉天环保工程有限公司 | A wind that makes an uproar send spray gun for pressing down dirt removes haze |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112146256B (en) | 2022-10-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202431336U (en) | Automotive exhaust silencer | |
| CN106402974A (en) | Noise-reducing range hood | |
| CN110206766A (en) | Rectangular array cylindricality fans silencer | |
| CN103850769B (en) | A kind of automotive muffler controlling reproduced air-flow noise | |
| CN212615643U (en) | Radial two-side multi-channel air inlet and outlet silencer | |
| CN205101199U (en) | Special muffler of refrigerating system | |
| CN205578066U (en) | Novel silencer | |
| CN112728750A (en) | Silencing pipe | |
| CN208348778U (en) | A kind of ventilation shaft is built-in without windage Absorption System | |
| CN112146256B (en) | Air pipeline silencing method | |
| CN206726756U (en) | A kind of Combined type muffler for being convenient for changing muffling unit | |
| CN112097385B (en) | Silencing pipe group | |
| CN102619591A (en) | Airflow reverse opposite-impact silencing unit in exhaust silencer of internal combustion engine | |
| CN109763885B (en) | Muffler exhaust method suitable for different working conditions | |
| CN206917701U (en) | Exhaust silencer and gas extraction system | |
| CN215595959U (en) | Silencer of axial flow fan | |
| JPS61291714A (en) | Noise converter | |
| CN2274257Y (en) | Silencer | |
| CN205638611U (en) | Multicavity backward flow dissipation combined type muffling device | |
| CN212967087U (en) | Environment-friendly silencer | |
| CN205477835U (en) | Multi -level buffer formula muffler | |
| CN113153825A (en) | A silencing device and fan for fan | |
| CN212429340U (en) | Mining energy-conserving side air inlet, double-deck low noise ventilator device | |
| CN204961415U (en) | Fan silencer | |
| CN108386253B (en) | Loader amortization mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |