CN1031595A - A kind of airflow noise-elimination method and device - Google Patents
A kind of airflow noise-elimination method and device Download PDFInfo
- Publication number
- CN1031595A CN1031595A CN 88106682 CN88106682A CN1031595A CN 1031595 A CN1031595 A CN 1031595A CN 88106682 CN88106682 CN 88106682 CN 88106682 A CN88106682 A CN 88106682A CN 1031595 A CN1031595 A CN 1031595A
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- plate washer
- rotary blade
- damping
- inlet
- hole
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Abstract
A kind of new inlet and outlet noise reduction method and device are characterized in adopting the noise reduction method by the adaptive damping rotary blade of inlet and outlet stream driving.Cause different surface friction drag owing to the rotary blade bearing play varies with temperature, cause by the rotary blade convection current of the gas-powered body of taking offence and form different dampings, thereby reach erasure effect.Because rotary blade can store the energy of air-flow, so rotary blade can play instantaneous pressurization or suction to pulse pneumatic, and pulse pneumatic is tended to be steady.
Description
The present invention relates to the intake and exhaust noise reduction method and the device of motor and all gases pressurized container, be connected in the independent separately simultaneously silencer of installing of motor or other various pressurized container admission lines or exhaust duct or inlet and outlet pipeline more precisely, this silencer can be united use with existing baffler, also can use separately, also can be used in combination with air intake filter or Exhaust gas purifying device.
Existing baffler all adopts the method in static damping object and bend flow channel cross section to eliminate the inlet and outlet noise, the gas flow damping can not change with the flow parameter of fluid, simultaneously can not utilize exhaust energy to aspirate exhausting air, or carry out pneumatic compression to entering fluid with air inlet kinetic energy.The noise reduction method of the employing rotary damping device that the present invention proposes, can not only eliminate pneumatic noise, and can store the air-flow contained energy in whirligig, make it when needed as exhaust air suction or air inlet pressurization, therefore for the intake and exhaust pipeline (for example reciprocating type internal combustion engine) of pulsation, its inlet and outlet are flowed tend to be steady.
The noise reduction method that the present invention proposes is that the rotary damping device that is driven by inlet and outlet stream is set in the inlet and outlet runner, this rotary damping device can change damping with the gas flow parameter, thereby form the rotary damping device of on-fixed damping, gas is by behind this rotary damping device, the air-flow contained energy is converted into the rotation function of this device and is converted into heat energy and the consumption of loosing with the form of its pivot friction, has eliminated the noise of air-flow thereby the pressure and temp of air-flow and flow velocity are all descended to some extent.
The noise reduction method that the present invention proposes can be the noise reduction method that adopts above-mentioned rotary damping device separately, also can be the noise reduction method that above-mentioned rotary damping device and the static damping object of this device in the inlet and outlet road are united use.
Rotary damping device is that one or several rotary blades and one or several guide vane wheels are formed, this rotary blade and upper saw pulley coaxially or non-being contained in coaxially in air inlet and exhaust piper leads, rotary blade is driven by inlet and outlet stream.Static damping object is placed in the upstream end of the rotary blade of inlet and outlet in leading.
The axle sleeve of rotary blade is contained on the wearing piece, adjustable gaps between axle sleeve and the wearing piece is to the size that requires, because the above-mentioned gap of temperature variation can change, so the surface friction drag that produces between rotary sleeve and the wearing piece also can change, thereby forms the rotary blade of adaptive damping.
Fig. 1 is the rotary blade of adaptive damping and the sectional drawing that static damping object is united the baffler of use;
Fig. 2 is the axle and the assembling schematic representation of bearing of the rotary blade of adaptive damping;
Fig. 3 is the rotary blade of another kind of adaptive damping and embodiment's sectional drawing that static damping object is united the baffler of use;
Fig. 4 is the A-A sectional drawing of Fig. 3;
Fig. 5 is pivoting leaf wheel shaft and a bearing schematic representation embodiment illustrated in fig. 3;
Fig. 6 is the embodiment who uses the adaptive damping rotary blade separately.
The noise reduction method that the present invention proposes is at pressure vessel, thereby particularly arrange with the gas flow parameter in the inlet and outlet pipeline of various reciprocating engines and change the noise reduction method that damping forms the on-fixed damping, the variation of this damping mainly is to produce different frictional resistance owing to the gap between the wearing piece of the axle sleeve of rotary blade and this axle sleeve of supporting varies with temperature, and produces different dampings when making the air stream drives rotary blade and reaches erasure effect.
The rotary blade device that changes damping with fluid flow parameters can use separately, also can unite use with the object of stationary fixing damping.Static damping object is placed in the upstream end of the air current flow of rotary blade, what the inlet and outlet runner can be for variable cross section, above-mentioned rotary blade is contained in the segment pipe in inlet and outlet road.
The parallel axes of the axis of above-mentioned rotary blade and this impeller place inlet and outlet pipeline section or vertical, rotary blade have the sliding bearing that the gap between itself and its bearing changes with gas temperature.
Wearing piece 11(Fig. 2 is equipped with at the two ends of the axle sleeve 13 of rotary blade 12), wearing piece 11 can axially movablely be contained on the impeller shaft 15, compresses adjustment piece 10 interior gardens and has screw thread and spinning respective threads place on the pivoting leaf wheel shaft, again with locking nut 16 lockings.
Rotatably compress adjustment piece 10 and compress gap between the adjustment piece to adjusting wearing piece 11 and this, will change with the temperature above-mentioned gap of rising, so surface friction drag increases, rotary blade also increases the damping that gas flow forms.
Among the embodiment as shown in Figure 1, pipeline section 1 connects pressurized container, pipeline section 14 communicates with atmosphere, be fixed with the baffle plate 3 and 9 and middle plate washer 6 and 7 of vertical place pipeline section main axis at the upstream end of rotary blade 12, there is a through hole at middle plate washer 6 and 7 centers, it is suitable that this through hole and wall have the inner cylindrical pipe 5 of some through holes, and its two ends of through hole in the middle of inner cylindrical pipe 5 passes on the plate washer 6 and 7 are fixed on plate washer 3 and 9.The outer cylindrical tube 4 and 8 that wall has some through holes is packed between plate washer 3 and the middle plate washer 6 respectively and between middle plate washer 7 and the plate washer 9.Radius has some through holes greater than outer cylindrical tube 4 radius on plate washer 3, and radius has an arc-shaped through-hole greater than outer cylindrical tube 8 radius on plate washer 9, the string of a musical instrument of this arc-shaped through-hole and the parallel axes of rotary blade.
Another embodiment that the present invention proposes is shown in figure (3,4,5), the upstream end of rotary blade 20 is fixed with two plate washers 17 and 27 of the main axis of vertical place pipeline section, have several (for example 4) on the plate washer 17 and 27 and manage 18 suitable through holes, this through hole be positioned at the corresponding circumference of rotary blade mean radius on, pipe 18 with some small through hole is packed in the through hole of above-mentioned plate washer 17 and 27, one end of pipe 18 is a flat end, the other end 19 is the curving end, and the direction of twist of the blade of its curving direction and rotary blade adapts.
Upper saw pulley 21 and pipeline section and pivoting leaf wheel shaft 22 are fixed to be one, be packed in pipeline section inside, wearing piece 23 and 24 and pivoting leaf wheel shaft 22 be the drive fit assembling, and with the fixing wearing piece 24 of pin, impeller sleeve 28 is that integral body or riveted joint are connected with blade, and impeller sleeve 28 is contained on wearing piece 23 and 24.
The 3rd embodiment that the present invention proposes respectively is fixed with a pivoting leaf wheel shaft for to be fixed with three guide vane wheels and four rotatable impellers in the inlet and outlet conduit on two upper saw pulleys, two rotary blades respectively are housed on each pivoting leaf wheel shaft.
The silencer that adopts the present invention to propose is used for obtaining on the 475 type petrol engine good erasure effect.Under the state of throttle wide, in engine speed is 1800 rev/mins to 4000 rev/mins scope, oppose than test with the BJ212 baffler, the silencer that adopts the present invention to propose, than adopting BJ212 baffler noise average energy to descend 15.4 decibels, and also all declines of oil consumption, power also slightly improves.
Claims (7)
1, a kind of intake and exhaust noise reduction method of pressurized container is the object of static fixedly damping to be set in air inlet or exhaust duct and to adopt variable section runner, thereby it is characterized in that this noise reduction method can change the rotary damping device that damping forms the on-fixed damping with the gas flow parameter for being provided with in air inlet or grate flow channel.
Thereby 2, according to the described noise reduction method of claim 1 be in air inlet or exhaust duct separately employing can change the noise reduction method that object that damping forms the rotary damping device of on-fixed damping or above-mentioned rotary damping device and static fixedly damping is united use with fluid flow parameters.
3, a kind of inlet and outlet silencer of pressurized container, form at this ducted static damping object by variable cross section intake and exhaust pipeline and device, it is characterized in that in the intake and exhaust pipeline of this variable cross section, only being equipped with the rotary blade of the on-fixed damping that drives by flowing gas.
The parallel axes of the axis of this rotary blade and this impeller place inlet and outlet pipeline section or vertical, this rotary blade have the sliding bearing that the gap between itself and its bearing changes with gas temperature.
4, according to the described inlet and outlet silencer of claim 3, it is characterized in that in two ends of axle sleeve (13) of rotary blade (12) wearing piece (11) being housed, wearing piece (11) can axially movablely be contained on the impeller shaft (15), compress the interior garden of adjustment piece (10) and have screw thread, spinning is locked with locking nut (16) on pivoting leaf wheel shaft respective threads again.Impeller shaft (15) is packed in the inboard of housing (2).
5, according to the described inlet and outlet silencer of claim 3, it is characterized in that:
Advance, in the exhaust duct, the upstream end of rotary blade is fixed with plate washer (3) and (9) and middle plate washer (6) and (7) of vertical place pipeline section main axis, there is a through hole at middle plate washer (6) and (7) center, it is suitable that this through hole and wall have the inner cylindrical pipe (5) of some through holes, its two ends of through hole in the middle of inner cylindrical pipe (5) passes on the plate washer (6) and (7) are fixed on plate washer (3) and (9), wall has the outer cylindrical tube (4) of some through holes and (8) and is packed between plate washer (3) and the middle plate washer (6) respectively and between middle plate washer (7) and the plate washer (9)
Go up radius at plate washer (3) and have some through holes greater than outer cylindrical tube (4) radius,
Go up radius at plate washer (9) and have an arc-shaped through-hole greater than outer cylindrical tube (8) radius, the parallel axes of the string of a musical instrument of this arc-shaped through-hole and pivoting leaf wheel shaft.
Rotary blade is a sliding bearing.
6, according to the described silencer of claim 3, it is characterized in that:
In the inlet and outlet pipeline, be fixed with two plate washers (17) and (27) of the main axis of this pipeline section of vertical place in the upstream end of rotary blade, has some and pipe (18) through hole of suitable coupling mutually on plate washer (17) and (27), this through hole is positioned at and the corresponding garden of the average diameter of rotation blade (20) on week, pipe (18) with some small through hole is loaded in the through hole of above-mentioned plate washer (17) and (27), one end of pipe (18) is a flat end, the other end is the curving end, and blade (20) direction of twist of its curving direction and impeller adapts.
Upper saw pulley (21) and pivoting leaf wheel shaft (22) are fixed to be one, is packed in the pipeline section.
Wearing piece (23), (24) and the assembling of axle (22) drive fit, and again with dowel fixes wearing piece (24), impeller sleeve (28) and blade (20) are one whole or rivet and be connected, and impeller sleeve (28) is contained on wearing piece (23) and (24).
7,, it is characterized in that in the inlet and outlet pipeline, being fixed with several guide vane wheels and several rotatable impellers according to the described silencer of claim 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88106682 CN1015192B (en) | 1988-09-21 | 1988-09-21 | Method and apparatus for airflow noise-elimination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88106682 CN1015192B (en) | 1988-09-21 | 1988-09-21 | Method and apparatus for airflow noise-elimination |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1031595A true CN1031595A (en) | 1989-03-08 |
| CN1015192B CN1015192B (en) | 1991-12-25 |
Family
ID=4834347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88106682 Expired CN1015192B (en) | 1988-09-21 | 1988-09-21 | Method and apparatus for airflow noise-elimination |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1015192B (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1041286C (en) * | 1993-06-24 | 1998-12-23 | 北京化工学院 | Internal circulating gas-solid fluidizing bed |
| CN102428256A (en) * | 2009-05-22 | 2012-04-25 | 田纳科汽车营运公司 | Snap Action Valve With Inertia Damper |
| CN102829282A (en) * | 2012-08-21 | 2012-12-19 | 北京雪迪龙科技股份有限公司 | Balancing device for balancing airflow in gas channel |
| CN104633373A (en) * | 2015-02-15 | 2015-05-20 | 广东雄塑科技集团股份有限公司 | Silencer for drainage pipe |
| CN105103217A (en) * | 2013-01-30 | 2015-11-25 | 西门子股份公司 | Gas turbine inlet silencer |
| CN105422979A (en) * | 2015-12-14 | 2016-03-23 | 苏州国环环境检测有限公司 | Muffler for safety valve for chemical plant |
| CN105546034A (en) * | 2016-03-04 | 2016-05-04 | 江苏大学 | Impeller type inertia and damping device |
| CN105605146A (en) * | 2016-03-04 | 2016-05-25 | 江苏大学 | Mechanic-electric-hydraulic coupling type controllable inertia and damping apparatus |
| JP2016164383A (en) * | 2015-03-06 | 2016-09-08 | 有限会社ハットリモデル | Muffler and muffler structure |
| CN107255202A (en) * | 2017-06-14 | 2017-10-17 | 太原理工大学 | A kind of compound energy dissipator of Spiralism type for pipeline |
| CN108397394A (en) * | 2018-04-26 | 2018-08-14 | 珠海格力电器股份有限公司 | Silencing apparatus and air-conditioning |
| CN110017266A (en) * | 2019-04-04 | 2019-07-16 | 瑞安市乐登汽车部件有限公司 | A kind of pneumatic silencer |
| CN114837998A (en) * | 2022-05-23 | 2022-08-02 | 山东省章丘鼓风机股份有限公司 | Air inlet box of double-support ventilator |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100389246C (en) * | 2006-06-08 | 2008-05-21 | 重庆隆鑫工业（集团）有限公司 | Rotary air-flow noise-reducing silencer |
-
1988
- 1988-09-21 CN CN 88106682 patent/CN1015192B/en not_active Expired
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1041286C (en) * | 1993-06-24 | 1998-12-23 | 北京化工学院 | Internal circulating gas-solid fluidizing bed |
| CN102428256A (en) * | 2009-05-22 | 2012-04-25 | 田纳科汽车营运公司 | Snap Action Valve With Inertia Damper |
| CN102428256B (en) * | 2009-05-22 | 2014-05-21 | 田纳科汽车营运公司 | Snap Action Valve With Inertia Damper |
| CN102829282A (en) * | 2012-08-21 | 2012-12-19 | 北京雪迪龙科技股份有限公司 | Balancing device for balancing airflow in gas channel |
| CN102829282B (en) * | 2012-08-21 | 2015-05-27 | 北京雪迪龙科技股份有限公司 | Balancing device for balancing airflow in gas channel |
| CN105103217A (en) * | 2013-01-30 | 2015-11-25 | 西门子股份公司 | Gas turbine inlet silencer |
| CN104633373A (en) * | 2015-02-15 | 2015-05-20 | 广东雄塑科技集团股份有限公司 | Silencer for drainage pipe |
| JP2016164383A (en) * | 2015-03-06 | 2016-09-08 | 有限会社ハットリモデル | Muffler and muffler structure |
| CN105422979A (en) * | 2015-12-14 | 2016-03-23 | 苏州国环环境检测有限公司 | Muffler for safety valve for chemical plant |
| CN105546034A (en) * | 2016-03-04 | 2016-05-04 | 江苏大学 | Impeller type inertia and damping device |
| CN105605146A (en) * | 2016-03-04 | 2016-05-25 | 江苏大学 | Mechanic-electric-hydraulic coupling type controllable inertia and damping apparatus |
| CN105605146B (en) * | 2016-03-04 | 2017-10-20 | 江苏大学 | A kind of controllable inertia of electromechanical hydraulic coupling type and damping device |
| CN107255202A (en) * | 2017-06-14 | 2017-10-17 | 太原理工大学 | A kind of compound energy dissipator of Spiralism type for pipeline |
| CN108397394A (en) * | 2018-04-26 | 2018-08-14 | 珠海格力电器股份有限公司 | Silencing apparatus and air-conditioning |
| CN108397394B (en) * | 2018-04-26 | 2023-09-08 | 珠海格力电器股份有限公司 | Muffler device and air conditioner |
| CN110017266A (en) * | 2019-04-04 | 2019-07-16 | 瑞安市乐登汽车部件有限公司 | A kind of pneumatic silencer |
| CN110017266B (en) * | 2019-04-04 | 2024-03-22 | 瑞安市乐登汽车部件有限公司 | Pneumatic muffler |
| CN114837998A (en) * | 2022-05-23 | 2022-08-02 | 山东省章丘鼓风机股份有限公司 | Air inlet box of double-support ventilator |
| CN114837998B (en) * | 2022-05-23 | 2023-12-08 | 山东省章丘鼓风机股份有限公司 | Double-support ventilator air inlet box |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1015192B (en) | 1991-12-25 |
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