EP4519867A1 - Schalldämpfungs-vorrichtung - Google Patents
Schalldämpfungs-vorrichtungInfo
- Publication number
- EP4519867A1 EP4519867A1 EP23720227.0A EP23720227A EP4519867A1 EP 4519867 A1 EP4519867 A1 EP 4519867A1 EP 23720227 A EP23720227 A EP 23720227A EP 4519867 A1 EP4519867 A1 EP 4519867A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sound
- central axis
- absorption body
- attenuation device
- baffle
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
- F01N1/083—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using transversal baffles defining a tortuous path for the exhaust gases or successively throttling exhaust gas flow
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/161—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general in systems with fluid flow
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/162—Selection of materials
- G10K11/165—Particles in a matrix
Definitions
- the invention relates to a sound-damping device with an absorption body with an inlet opening for the
- the object of the invention is therefore to create a sound attenuation device in which effective sound absorption can be achieved cost-effectively using comparatively simple means over a wide frequency spectrum.
- the absorption body has a first end close to the inlet opening and a second end opposite the first end and close to the outlet opening, which are connected to one another via a central axis, with the side central axis between the first end and the other end, one or more sound baffles are formed, which begin at the entrance opening near the central axis and increase in width outwards towards the second end and end in the area of the second end at an end edge, the starting point of which adjoins the central axis and whose end point is arranged at a predetermined distance from the central axis.
- Preferred embodiments of the invention are the subject of the subclaims, the elements of which act to further improve the approach to solving the problem on which the invention is based.
- the combination of features means that the absorption body has a first end close to the inlet opening and a second end opposite the first end and close to the outlet opening, which are connected to one another via a central axis, with the side of the central one Axis between the first end and the other end one or more sound baffles are formed, which begin at the entrance opening near the central axis and increase in width outwards towards the second end and end in the area of the second end at an end edge, the starting point of which adjoins the central axis and whose end point is arranged at a predetermined distance from the central axis, achieves that with the help of the sound baffles with varying widths, resonance bodies for different frequencies are created, with the desired sound extinction taking place within a sound baffle, particularly when the exit opening is placed in front of a sound reflection wall.
- the width of a relevant sound baffle increases linearly starting at the entrance opening near the central axis towards the other end, with the first end of the absorption body facing the end point of the end edge remote from the central axis via a straight connecting line, and wherein a respective outer edge of a sound baffle comes to rest on the connecting line.
- the width of the sound baffles increases non-linearly starting at the entrance opening near the central axis towards the other end, with the first end of the absorption body at the end point remote from the central axis End edge is opposite via a concave curved connecting line, and a respective outer edge of a sound baffle comes to rest on the connecting line.
- a sound baffle is preferably designed as a hollow rail that is open towards the first end of the absorption body.
- a sound baffle may also be necessary for a sound baffle to be designed as a rail that is at least partially concave in the direction of the second end of the absorption body.
- a sound baffle is designed as a rail which is at least partially convex in the direction of the second end of the absorption body.
- An outer edge of a sound baffle can be designed to be more curved towards the first end of the absorption body than the inner wall opposite the outer edge.
- the end edge of a sound baffle is preferably aligned perpendicular to the central axis.
- the end edge can be aligned at a predetermined angle to the central axis, with the end point of the end edge protruding beyond the starting point by way of an extended outer edge.
- one or more sound diffusion elements are arranged, the starting point of which adjoins the central axis and the end point of which comes to lie on the outer edge of the sound baffle in question.
- a sound reflection element is arranged in the area of the end edge of a sound baffle and is aligned at right angles to the surface of the sound baffle, the starting point of which adjoins the central axis and the end point of which lies on the outer edge of the sound baffle in question.
- the absorption body is preferably made in particular from a dimensionally stable hard material such as ABS (acrylonitrile-butadiene-styrene copolymer) or from BLA (a polylactide). Furthermore, the absorption body can be made of a metal such as stainless steel or aluminum or even concrete.
- melt layering EDM Fusion Modeling
- the absorption body according to the invention from the first end to the other end preferably has a height in the range of 5 cm to 50 cm and in particular of about 30 cm, the end edge of a sound conducting device preferably having a width in the range of 2 cm to 40 cm and in particular of about 20 cm.
- One or more absorption bodies can preferably be placed in front of a sound reflection wall, the central axis of each absorption body being arranged at right angles to the surface of the sound reflection wall and a relevant exit opening of the absorption body being arranged opposite the sound reflection wall.
- FIG. 1 shows a preferred embodiment of the sound attenuation device according to the invention in a side view
- 2 shown in FIG. 1 preferred embodiment of the sound attenuation device according to the invention in a side view from above;
- FIG. 3 shown in Fig. 1 preferred embodiment of the sound attenuation device according to the invention in a side view from below.
- the sound dampening device 100 contains an absorption body 110 with an input opening 111 for the input of sound waves to be dampened and an output opening 112 opposite the input opening 111, the absorption body 110 having a first end 113 close to the input opening 111 as well a second end 114 opposite the first end 113 and close to the exit opening 112, which are connected to one another via a central axis 115, and one or more sound baffles 120 are formed on the side of the central axis 115 between the first end 113 and the other end 114 .
- the sound baffles 120 begin near the central axis at the entrance opening 111 and increase in width outwards towards the second end 114 and end in the area of the second end 114 at an end edge 130, its starting point
- a relevant sound baffle 120 increases in a linear manner starting at the entrance opening 111 near the central axis to the other end 114, with the first end 113 of the absorption body 110 facing the end point 132 of the end edge 130 remote from the central axis 115 via a straight connecting line 140, and wherein a respective outer edge of a sound baffle 120 comes to rest on the connecting line 140.
- a sound baffle 120 is designed as a hollow rail that is open in the direction of the first end 113 of the absorption body 110 and is at least partially convex in the direction of the second end 114 of the absorption body 110.
- An outer edge of a sound-conducting wall 120 is designed to be more curved towards the first end of the absorption body 110 than the inner wall opposite the outer edge.
- the end edge 130 of a sound baffle 120 is aligned perpendicular to the central axis 115.
- one or more sound diffusion elements 150 are arranged in the area of the surface of a sound baffle 120, the starting point of which adjoins the central axis 115 and the end point 132 of which lies on the outer edge of the sound baffle 120 in question comes.
- a sound reflection element 160 is arranged in the area of the end edge 130 of a sound baffle 120 and is aligned at right angles to the surface of the sound baffle 120, the starting point 131 of which adjoins the central axis 115 and the end point 132 of which is at the Outer edge of the sound baffle 120 in question comes to rest.
- the absorption body 110 shown is provided with three sound baffles 120 and is designed to be rotationally symmetrical with respect to a rotation of 120° about the central axis 115.
- the absorption body 110 is made of a dimensionally stable hard material, in the present case made of ABS (acrylonitrile-butadiene-styrene copolymer).
- the absorption body 110 has a height of approximately 30 cm from the first end 113 to the other end 114, with the end edge 130 of a sound conducting device having a width of 20 cm.
- one or more of the absorption bodies 110 shown are placed in front of a sound reflection wall 200, the central axis 115 of each absorption body 110 being arranged at right angles to the surface of the sound reflection wall 200 and a relevant exit opening 112 of the absorption body 110 the sound reflection wall 200 is arranged opposite.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Fluid Mechanics (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Building Environments (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022110970.4A DE102022110970B3 (de) | 2022-05-04 | 2022-05-04 | Schalldämpfungs-Vorrichtung |
| PCT/DE2023/100222 WO2023213341A1 (de) | 2022-05-04 | 2023-03-22 | Schalldämpfungs-vorrichtung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4519867A1 true EP4519867A1 (de) | 2025-03-12 |
Family
ID=85383788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23720227.0A Pending EP4519867A1 (de) | 2022-05-04 | 2023-03-22 | Schalldämpfungs-vorrichtung |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20250372072A1 (de) |
| EP (1) | EP4519867A1 (de) |
| JP (1) | JP2025516334A (de) |
| CN (1) | CN119054012A (de) |
| DE (2) | DE102022110970B3 (de) |
| WO (1) | WO2023213341A1 (de) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1119668A (fr) | 1954-06-26 | 1956-06-22 | Appareil détendeur de gaz | |
| US3182748A (en) | 1961-08-15 | 1965-05-11 | Garrett Corp | Helical vane for sound absorbing device and method of making said vane |
| KR20140140009A (ko) * | 2014-11-18 | 2014-12-08 | 손계동 | 흐름 연동의 배기압 다단 분산 기능을 갖는 차량용 머플러 |
| KR101754042B1 (ko) * | 2016-11-03 | 2017-07-05 | 김진영 | 차량의 흡배기관내 공기 와류발생기 |
-
2022
- 2022-05-04 DE DE102022110970.4A patent/DE102022110970B3/de not_active Expired - Fee Related
-
2023
- 2023-03-22 US US18/862,805 patent/US20250372072A1/en active Pending
- 2023-03-22 CN CN202380037965.5A patent/CN119054012A/zh active Pending
- 2023-03-22 WO PCT/DE2023/100222 patent/WO2023213341A1/de not_active Ceased
- 2023-03-22 DE DE112023002098.1T patent/DE112023002098A5/de not_active Withdrawn
- 2023-03-22 EP EP23720227.0A patent/EP4519867A1/de active Pending
- 2023-03-22 JP JP2024565098A patent/JP2025516334A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023213341A1 (de) | 2023-11-09 |
| DE102022110970B3 (de) | 2023-03-23 |
| DE112023002098A5 (de) | 2025-03-27 |
| US20250372072A1 (en) | 2025-12-04 |
| CN119054012A (zh) | 2024-11-29 |
| JP2025516334A (ja) | 2025-05-27 |
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Legal Events
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| STAA | Information on the status of an ep patent application or granted ep patent |
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