EP3511641B1 - Schalldämpfelement für eine raumlufttechnische klima- und/oder lüftungsanlage - Google Patents

Schalldämpfelement für eine raumlufttechnische klima- und/oder lüftungsanlage Download PDF

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Publication number
EP3511641B1
EP3511641B1 EP19151310.0A EP19151310A EP3511641B1 EP 3511641 B1 EP3511641 B1 EP 3511641B1 EP 19151310 A EP19151310 A EP 19151310A EP 3511641 B1 EP3511641 B1 EP 3511641B1
Authority
EP
European Patent Office
Prior art keywords
fabric
damping element
absorption material
acoustic damping
housing wall
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.)
Active
Application number
EP19151310.0A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3511641A1 (de
Inventor
Hans-Willi Döring
Stefan Roes
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Trox SE
Original Assignee
Gebrueder Trox GmbH
Trox SE
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Gebrueder Trox GmbH, Trox SE filed Critical Gebrueder Trox GmbH
Publication of EP3511641A1 publication Critical patent/EP3511641A1/de
Application granted granted Critical
Publication of EP3511641B1 publication Critical patent/EP3511641B1/de
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Anticipated expiration legal-status Critical

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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
    • G10K11/161—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general in systems with fluid flow
    • 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
    • F24F13/0263—Insulation for air ducts
    • 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
    • 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
    • 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 a sound-damping element for an air conditioning and/or ventilation system, the sound-damping element comprising a housing wall, a cover element arranged at a distance from the inside of the housing wall and having at least one opening, and an absorption material, the absorption material between the inside of the housing wall and the Covering element is arranged and serves to absorb sound from a gaseous medium flowing along the side of the covering element facing away from the absorption material.
  • the cover element is a sheet metal with openings, which is designed as a perforated sheet metal.
  • the gaseous medium flows along the cover element.
  • the sound energy penetrates into the absorption material via the openings in the cover element.
  • a significant proportion of the incident sound energy is absorbed in the pores of the absorption material and converted into heat.
  • an additional layer made of a glass fleece must be provided between the absorption material and the covering element. Because of the additional layer, such sound-damping elements have a complex construction. The manufacturing process is also more complex.
  • the object of the invention is to avoid the aforementioned disadvantages and to specify a sound-damping element which has a simpler construction and which prevents fibers from being discharged from the absorption material into the flowing medium as far as possible.
  • the cover element is designed as a net-like, fine-meshed fabric with a large number of corresponding openings.
  • a fabric is understood to mean a fabric that consists of at least two thread systems that are crossed at right angles or almost at right angles.
  • One thread system consists of warp threads running in the longitudinal direction, while the weft threads running transversely to this form the second thread system.
  • the warp threads go over and under the warp threads in a certain rhythm.
  • the housing wall can be designed circumferentially without the formation of housing edges aligned parallel to the direction of flow and in this respect can form a round or oval flow cross section, for example. If the sound-damping element has an angular, for example square, cross-section, the sound-damping element has a corresponding number of housing wall sections.
  • the openings are dimensioned sufficiently small to prevent fibers from passing through from the absorption material into the flowing medium.
  • the fine mesh allows sufficient acoustic transparency, but at the same time prevents fibers from being discharged from the absorption material through the cover element into the flowing medium.
  • the configuration according to the invention is characterized by a simpler structural configuration, so that the manufacturing process is also simplified. An additional layer is no longer required. Rather, the cover element is directly adjacent to the absorption material. The absorption material can also be in direct contact with the cover element. Since no undesirable Fiber transition from the absorption material into the gaseous medium takes place, the sound-damping element according to the invention can also be used for ventilation or for venting rooms that have to meet higher hygienic requirements.
  • the cover element is designed and arranged in such a way that it counteracts a displacement of the absorption material away from the housing wall. This prevents the absorption material from being displaced from the immediately adjacent area of the housing wall.
  • Such a configuration makes it possible to use an absorption material which does not have sufficient dimensional stability and which, for example, is not glued to the inside of the housing wall.
  • the fabric is formed either as a wire fabric or from filaments.
  • a wire mesh When embodied as a wire mesh, this is preferably in the form of a stainless steel wire mesh, a galvanized steel mesh or an aluminum mesh.
  • the fabric can also consist of another suitable metal.
  • Each wire can be formed as a single core.
  • a wire can also consist of a twisted bundle of individual wires.
  • a fabric In contrast to a known perforated plate, a fabric has, due to its design, a very large number of openings in relation to a surface, so that a very large sound-damping effect is achieved. At the same time, a wire mesh allows for easy cleaning in the event of contamination due to its smooth surfaces.
  • the thickness d of at least one wire, preferably all wires, can be between 0.1 mm and 0.5 mm, preferably between 0.15 mm and 0.4 mm, particularly preferably between 0.2 mm and 0.32 mm.
  • the fabric is formed from filaments. Under a filament becomes a continuous fiber, such as a continuous chemical fiber of polyester or polyamide, understood. Filaments are therefore practically unlimited in length. Filaments can be designed as individual fibers or as bundles of several individual filaments.
  • the thickness d of at least one filament, preferably all filaments, can be between 0.1 mm and 0.5 mm, preferably between 0.15 mm and 0.4 mm, particularly preferably between 0.2 mm and 0.32 mm.
  • the mesh size w of the fabric is between 0.15 mm and 0.7 mm, preferably between 0.2 mm and 0.6 mm, particularly preferably between 0.3 mm and 0.5 mm.
  • the mesh size is understood to be the clear distance between two adjacent "warp threads" or “weft wires” in a wire mesh and the clear distance between two adjacent warp threads or weft threads in a mesh made of filaments, for example.
  • the absorption material may comprise glass wool or rock wool. However, the absorption material can also consist entirely of glass wool or rock wool.
  • the sound-damping element can be designed as a tubular sound absorber.
  • the housing wall runs all the way around and forms an air line with two ends for connection to other components of a ventilation and air conditioning system.
  • the cover element which is also of tubular design, is provided in the sound-damping element, with the absorption material, which is also of tubular design, being arranged between the outside of the covering element and the inside of the housing wall.
  • This in 1 illustrated sound absorbing element 1 is designed as a tubular silencer.
  • the sound-absorbing element 1 has two ends 2, 3, by means of which the sound-absorbing element 1 is connected to other components of an air conditioning and/or ventilation system, not shown.
  • the sound-damping element 1 has a housing wall 4 on the outside.
  • a cover element 5 is arranged at a distance from the inside of the housing wall 4 .
  • an absorption material 6 in the form of a mat.
  • the absorption material 6 serves to absorb sound from a gaseous medium flowing in the direction of the arrow 7 along the side of the cover element 5 facing away from the absorption material 6 .
  • the sound-damping element 1 forms a channel section which extends between the ends 2, 3 and has a round flow cross-section.
  • the sound-damping element 1 shown has a round configuration, so that the housing wall 4, the cover element 5 and the absorption material 6 each form a round tubular structure.
  • the absorption material 6 can include rock wool, for example, or can consist entirely of rock wool.
  • the cover element 5 is designed as a net-like fine-mesh fabric with a large number of corresponding openings 8 .
  • the openings 8, which are square in this case, are evenly distributed.
  • the mesh is in the form of wire mesh, for example stainless steel wire mesh.
  • Each wire is as formed a single vein.
  • the cover element 5 is designed and arranged in such a way that it counteracts a displacement of the absorption material 6 away from the housing wall 4 .
  • the fabric consists of a wire system of "warp wires” running in the longitudinal direction and “weft wires” running transversely to this.
  • the thickness d of each wire is between 0.1 mm and 0.5 mm, preferably between 0.15 mm and 0.4 mm, particularly preferably between 0.2 mm and 0.32 mm.
  • the mesh width w of the fabric is between 0.15 mm and 0.7 mm, preferably between 0.2 mm and 0.6 mm, particularly preferably between 0.3 mm and 0.5 mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Mechanical Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Exhaust Silencers (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Pipe Accessories (AREA)
  • Building Environments (AREA)
EP19151310.0A 2018-01-11 2019-01-11 Schalldämpfelement für eine raumlufttechnische klima- und/oder lüftungsanlage Active EP3511641B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202018100139.6U DE202018100139U1 (de) 2018-01-11 2018-01-11 Schalldämpfelement für eine raumlufttechnische Klima- und/oder Lüftungsanlage

Publications (2)

Publication Number Publication Date
EP3511641A1 EP3511641A1 (de) 2019-07-17
EP3511641B1 true EP3511641B1 (de) 2023-05-03

Family

ID=62026460

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19151310.0A Active EP3511641B1 (de) 2018-01-11 2019-01-11 Schalldämpfelement für eine raumlufttechnische klima- und/oder lüftungsanlage

Country Status (5)

Country Link
EP (1) EP3511641B1 (pl)
DE (1) DE202018100139U1 (pl)
DK (1) DK3511641T3 (pl)
ES (1) ES2946335T3 (pl)
PL (1) PL3511641T3 (pl)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4375573B8 (en) * 2022-11-23 2025-12-17 Resideo LLC A silencer

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3175640A (en) * 1961-04-19 1965-03-30 Fukuo Saeki Muffling devices for air handling systems
US5705777A (en) * 1995-10-20 1998-01-06 Carrier Corporation Refrigeration compressor muffler
DE19920050A1 (de) * 1998-09-11 2000-11-09 Jacobs Heinz Josef Lüftungskanal mit Schalldämpfungselement

Also Published As

Publication number Publication date
EP3511641A1 (de) 2019-07-17
ES2946335T3 (es) 2023-07-17
DK3511641T3 (da) 2023-06-12
DE202018100139U1 (de) 2018-04-09
PL3511641T3 (pl) 2023-08-28

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