EP3921191A1 - Air channel for a motor vehicle and method for the production thereof - Google Patents
Air channel for a motor vehicle and method for the production thereofInfo
- Publication number
- EP3921191A1 EP3921191A1 EP20701691.6A EP20701691A EP3921191A1 EP 3921191 A1 EP3921191 A1 EP 3921191A1 EP 20701691 A EP20701691 A EP 20701691A EP 3921191 A1 EP3921191 A1 EP 3921191A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- air
- air inlet
- endless profile
- wall
- air duct
- 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- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims description 5
- 238000004519 manufacturing process Methods 0.000 title description 5
- 230000003584 silencer Effects 0.000 claims description 13
- 238000004378 air conditioning Methods 0.000 claims description 7
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 238000005192 partition Methods 0.000 claims description 5
- 238000009423 ventilation Methods 0.000 claims description 5
- 239000011358 absorbing material Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000000446 fuel Substances 0.000 claims description 3
- 239000006096 absorbing agent Substances 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 4
- 230000002238 attenuated effect Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 241000446313 Lamella Species 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00507—Details, e.g. mounting arrangements, desaeration devices
- B60H1/00557—Details of ducts or cables
- B60H1/00564—Details of ducts or cables of air ducts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
- F02M35/1205—Flow throttling or guiding
- F02M35/1216—Flow throttling or guiding by using a plurality of holes, slits, protrusions, perforations, ribs or the like; Surface structures; Turbulence generators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
- F02M35/1255—Intake silencers ; Sound modulation, transmission or amplification using resonance
- F02M35/1266—Intake silencers ; Sound modulation, transmission or amplification using resonance comprising multiple chambers or compartments
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
- F02M35/1272—Intake silencers ; Sound modulation, transmission or amplification using absorbing, damping, insulating or reflecting materials, e.g. porous foams, fibres, rubbers, fabrics, coatings or membranes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/02—Energy absorbers; Noise absorbers
- F16L55/027—Throttle passages
- F16L55/02781—The regulating element being provided with radial outputs
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00507—Details, e.g. mounting arrangements, desaeration devices
- B60H2001/006—Noise reduction
-
- 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
Definitions
- the invention relates to an air duct for a motor vehicle, in particular as part of its heating, ventilation and / or air conditioning system, as part of the air or exhaust gas path of its internal combustion engine or, alternatively, the air path of its fuel cell drive.
- JP 2006 123659 A discloses an air duct for a motor vehicle with an air outlet, a housing for sound absorption being arranged downstream of the air outlet.
- the housing has an acoustic chamber with an air-permeable element that absorbs sound.
- DE 104 41 319 A1 EP 1 510 667 A2, DE 10 201 1 008 518 A1, DE 10 2010 027 374 A1, DE 10 2006 057 823 A1 and the generic die DE 103 31 139 A1.
- an air duct for a motor vehicle, for example a dimensionally stable metal or plastic duct.
- the air duct has a cylindrical air inlet and a cylindrical endless profile.
- an air inlet is also an air outlet, since the direction of flow is not important for the technical solution explained below.
- the air inlet has a cylindrical cross section and, in particular, has a closed one (apart from certain through openings, which are shown below are explained) cylindrical outer wall.
- the air inlet has openings or holes through it.
- the endless profile has at least one from its inner wall inwardly protruding web, the base of which rests on the outer wall of the air inlet.
- the endless profile forms, together with at least part of the outer wall of the air inlet, a silencer with at least one resonator chamber.
- air flows e.g. Fresh air or exhaust gases
- the air duct reaches the area of the endless profile.
- Part of the air and thus the sound waves pass through the through openings into the resonator chambers and attenuate the sound in the corresponding frequency range, which is largely determined by the geometry of the resonator chambers and the through openings (e.g. round, rectangular or diamond-shaped) , wherein the openings can be produced by punching.
- the air inlet outer wall or at least part of it forms a first part of the muffler and the endless profile forms a corresponding second part of the muffler, which saves material for the provision of the muffler.
- the endless profile is positioned outside the air inlet.
- the protruding end of the web rests on the outer wall of the air inlet and the air inlet has the through openings through which air can flow into the resonator chamber thus formed.
- the web significantly defines the geometry of the resonator chambers and thus the resonator shaft.
- the amount by which the web protrudes from the endless profile (hereinafter referred to as “height”) can either be selected to be fixed for the modular sound absorber or be selected as an integral multiple of a base height.
- a cylindrical endless profile is provided and there are at least two annular partition walls protruding radially from the air inlet and / or from the endless profile.
- the resonator chamber can be closed in the axial direction so that it forms a closed chamber.
- the endless profile which has the protruding webs, also has the corresponding protruding partition walls, but this is not mandatory.
- an embodiment can be implemented in which the endless profile is pushed over the air inlet to form a non-positive connection. Installation is therefore particularly simple and also allows existing vehicles to be provided with a silencer at a later date that eliminates disturbing noises.
- This solution is suitable for combinations of dimensionally stable air ducts and dimensionally stable endless profiles, especially in the case of such parts made of metal or hard plastic.
- the air duct can be designed in such a way that the endless profile is glued to the outer wall of the air inlet, possibly by friction welding, or is sprayed onto it.
- This is particularly useful if both the air inlet and the endless profile are made of plastic, because in this case the components can be fixed against each other, which prevents rattling noises caused by relative movements.
- a (subsequent) spraying of the endless profile onto the air inlet is more advisable if the spraying is to take place on the outer wall of the air duct, since cavities have to be created.
- This embodiment also makes it possible to subsequently provide corresponding air ducts with a silencer.
- the resonator chambers are formed from a sound-absorbing material, for example from a fleece.
- the walls of the resonator chambers can be designed in such a way that the air duct and / or the dimensionally stable endless profile consist of the sound-absorbing material.
- the interior of the resonator can contain such a sound-absorbing material which can also be regarded as part of the resonator. This allows sound attenuation to be achieved in a broader frequency range.
- the endless profile of one or more of the above embodiments to have openings of different geometries and / or sizes. This means that any number of frequency ranges can be damped.
- the drilling diameter correlates well with the resonance frequency. Attenuation of several reso- nanzfrequenzen results from the use of several webs, because then several resonator chambers arise, each of which can be designed for damping a different resonance frequency.
- the resonator chambers are provided at the air inlet or outlet, and possibly inside it.
- the air inlet can have an expansion area, in particular an elongate expansion area.
- the widening area can also project beyond the silencer in the longitudinal direction, in particular by approx. 1 cm to approx. 10 cm, in order to make it easier to connect the sound-insulated air duct to other components.
- a particularly practical use of the air duct described above results when it is used in a motor vehicle for connecting a person air inlet to introduce air into the vehicle interior, since the silencer can be arranged in the connection area richly. This enables efficient sound insulation very close to where the sound is generated.
- Other sources of sound that can be attenuated with the silencer described above are fans in which noises arise due to air acceleration, heat exchangers where air detachment noises can occur and flow channels in the fresh or recirculated air area of a vehicle air conditioning system.
- connection dimensions there is a modular principle for the user with standardized connection dimensions.
- one or more endless profiles are provided in production, which define the dimensions of the respective resonator chambers.
- the through openings that are appropriate in terms of geometry and cross-section are selected, which can be easily determined experimentally or by simulations.
- the air duct can also be used universally because it can be part of an air guiding element or a component of a component of a motor vehicle heating, ventilation and / or air conditioning system, in particular an air vent or air intake or the air conditioning unit itself, or a component of an air or air conditioning system
- the exhaust path of an internal combustion engine, in particular a turbocharger inlet or outlet Use for the air path of a fuel cell drive is also possible.
- the integration of the silencer at the air inlet or outlet results in a compact silencer with minimal Increased installation space, in which the air duct described can also be a fitting or connection piece.
- a second aspect of the invention relates to a method for providing a sound-damped air duct or a manufacturing method. It has the steps according to claim 9.
- This method makes it possible, particularly when the endless profile is pushed over the air inlet to form a non-positive connection, to provide an air duct with sound absorption in a particularly simple manner.
- Another aspect relates to the use of an endless profile equipped with at least one web and openings to form a silencer on an air inlet of a component of a motor vehicle heating, ventilation and / or air conditioning system or on an air inlet of a component of an air or exhaust gas path Internal combustion engine.
- Fig. 1 shows a cylindrical air duct 5 in axial section and Fig. 2 this korrespondie rend the same air duct 5 looking in the direction of the cylinder axis Z.
- the air duct 5 has a cylindrical endless profile 1, the four of its inner wall 11 protrude radially inward de , Webs 2 owns.
- the base points 4 of the webs 2 lie on the outer wall of the Lucaseinlas 14 ses.
- four resonator chambers 8, 8 ', 8 ", 8'” are formed between the endless profile 1 and the air inlet 14, each of which has an opening 3 through which air can flow.
- the endless profile 1 can be cut to length and inserted into the interior of a cylindrical air inlet 14 to form a force-fit connection.
- webs can be selected which are arranged obliquely with respect to the radial direction or at an angle> 0 ° to this, preferably at an angle ⁇ 45 °.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019201504.2A DE102019201504A1 (en) | 2019-02-06 | 2019-02-06 | Air duct for a motor vehicle and method for its manufacture |
PCT/EP2020/050536 WO2020160870A1 (en) | 2019-02-06 | 2020-01-10 | Air channel for a motor vehicle and method for the production thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3921191A1 true EP3921191A1 (en) | 2021-12-15 |
Family
ID=69190747
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20701691.6A Withdrawn EP3921191A1 (en) | 2019-02-06 | 2020-01-10 | Air channel for a motor vehicle and method for the production thereof |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP3921191A1 (en) |
CN (1) | CN113396073A (en) |
DE (1) | DE102019201504A1 (en) |
MA (1) | MA56427A (en) |
WO (1) | WO2020160870A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102022101107A1 (en) | 2022-01-18 | 2023-07-20 | Woco Industrietechnik Gmbh | Motor vehicle and air duct for conducting room air into or out of a cabin of a motor vehicle |
CN115217694A (en) * | 2022-04-01 | 2022-10-21 | 长城汽车股份有限公司 | Resonance body, bleed air pipe and vehicle |
DE202023102698U1 (en) | 2023-05-17 | 2023-06-12 | Mahle International Gmbh | air duct |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1176355A3 (en) * | 2000-07-28 | 2003-05-28 | Trelleborg Ab | Noise attenuation arrangements for pressurised-gas conduits |
US6684842B1 (en) * | 2002-07-12 | 2004-02-03 | Visteon Global Technologies, Inc. | Multi-chamber resonator |
EP1510667B1 (en) * | 2003-08-26 | 2008-10-08 | ABB Turbo Systems AG | Silencer |
DE10341319B4 (en) * | 2003-09-08 | 2006-02-02 | Veritas Ag | silencer |
JP2006123659A (en) | 2004-10-28 | 2006-05-18 | Toyoda Gosei Co Ltd | Vent duct for vehicle |
DE102005020302A1 (en) * | 2005-04-03 | 2006-10-05 | Volkswagen Ag | Muffler for use in internal combustion engine, has flexible material or polyethylene foil for locking individual resonator chambers of housing opposite interior of air supply line which radially extends from housing |
DE102006057823A1 (en) * | 2006-12-06 | 2008-06-12 | Behr Gmbh & Co. Kg | Sound-damped, gas-conducting component |
DE102010027374A1 (en) * | 2010-07-16 | 2011-05-05 | Daimler Ag | Air circulation arrangement for air conditioning system of motor vehicle, has air duct made of foam material, where end region of another air duct is introduced to end region of former air duct under formation of sealing seat |
DE102011008518B4 (en) * | 2011-01-13 | 2022-11-03 | Mahle International Gmbh | Wall for an air duct, air duct and air conditioning |
US9157773B2 (en) | 2012-05-31 | 2015-10-13 | General Electric Company | Sensor validation method, patient monitor, physiological sensor, and computer program product for a patient monitor |
DE202013105639U1 (en) * | 2013-12-11 | 2014-01-15 | Dr. Schneider Kunststoffwerke Gmbh | Sound-absorbing element for an air vent |
DE102015202851A1 (en) * | 2015-02-17 | 2016-08-18 | Röchling Automotive SE & Co. KG | Fluid conduit means |
KR20160103878A (en) * | 2015-02-25 | 2016-09-02 | 원광대학교산학협력단 | Resonance type silencer for noise reduction |
DE102016118583A1 (en) | 2016-09-30 | 2018-04-05 | Bayerische Motoren Werke Aktiengesellschaft | Ventilation device for ventilating an interior of a motor vehicle |
DE102017002857A1 (en) * | 2017-03-24 | 2018-09-27 | GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) | Air conditioning device of a motor vehicle |
-
2019
- 2019-02-06 DE DE102019201504.2A patent/DE102019201504A1/en active Pending
-
2020
- 2020-01-10 MA MA056427A patent/MA56427A/en unknown
- 2020-01-10 WO PCT/EP2020/050536 patent/WO2020160870A1/en unknown
- 2020-01-10 EP EP20701691.6A patent/EP3921191A1/en not_active Withdrawn
- 2020-01-10 CN CN202080012975.XA patent/CN113396073A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
MA56427A (en) | 2022-05-11 |
CN113396073A (en) | 2021-09-14 |
WO2020160870A1 (en) | 2020-08-13 |
DE102019201504A1 (en) | 2020-08-06 |
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Legal Events
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