EP3511641A1 - Acoustic damping element for a ventilation and/or air conditioning system - Google Patents

Acoustic damping element for a ventilation and/or air conditioning system Download PDF

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Publication number
EP3511641A1
EP3511641A1 EP19151310.0A EP19151310A EP3511641A1 EP 3511641 A1 EP3511641 A1 EP 3511641A1 EP 19151310 A EP19151310 A EP 19151310A EP 3511641 A1 EP3511641 A1 EP 3511641A1
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EP
European Patent Office
Prior art keywords
absorption material
housing wall
silencer
fabric
cover
Prior art date
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Granted
Application number
EP19151310.0A
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German (de)
French (fr)
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EP3511641B1 (en
Inventor
Hans-Willi Döring
Stefan Roes
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Gebrueder Trox GmbH
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Gebrueder Trox GmbH
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Publication of EP3511641A1 publication Critical patent/EP3511641A1/en
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    • 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 silencing element for a room air conditioning and / or ventilation system, wherein the silencer comprises a housing wall, a spaced apart from the inside of the housing wall and at least one opening exhibiting cover member and an absorbent material, wherein the absorption material between the inside of the housing wall and the Covering element is arranged and serves for the absorption of sound from a along the absorbent material side facing away from the Abdeckungseses flowing gaseous medium.
  • the cover is a sheet with openings, which is designed as a perforated plate.
  • the gaseous medium flows along the cover.
  • the sound energy penetrates through the openings of the cover into the absorption material.
  • a significant proportion of the incident sound energy is absorbed in the pores of the absorbent material and converted into heat.
  • an additional layer of a glass fleece must be provided between the absorption material and the covering element. Due to the additional layer, such silencing elements have a complex construction. Also, the manufacturing process is more complex.
  • the object of the invention is to avoid the aforementioned disadvantages and to provide a silencer, which has a simpler construction and as far as possible prevents a discharge of fibers from the absorbent material in the flowing medium.
  • the cover is formed as a mesh-like fine-mesh fabric with a plurality of corresponding openings.
  • a fabric is understood to mean a fabric consisting of at least two thread systems crossed at right angles or at right angles.
  • the one thread system consists of longitudinally running warp threads, while the weft threads extending transversely thereto form the second thread system.
  • the warp threads go in a certain rhythm over and under the warp threads.
  • the housing wall may be formed circumferentially without the formation of aligned parallel to the flow direction housing edges and extent, for example, form a round or oval flow cross-section. If the sound-damping element has an angular, for example quadrangular, cross-section, the sound-damping element has a corresponding number of housing wall sections.
  • the openings are dimensioned sufficiently small that they prevent passage of fibers from the absorbent material in the flowing medium.
  • the fine mesh allows a sufficient acoustic transparency, but at the same time prevents a discharge of fibers from the absorbent material through the cover in the flowing medium.
  • the embodiment of the invention is characterized by a simpler structural design, so that thus the manufacturing process is simplified. It does not require an additional layer. Rather, the cover adjacent directly to the absorbent material. The absorption material can also rest directly on the cover. Because no unwanted Fiber transition occurs from the absorption material into the gaseous medium, the sound-damping element according to the invention can also be used for ventilation or ventilation of rooms that need to meet higher hygienic requirements.
  • the cover element can be designed and arranged such that it counteracts a displacement of the absorption material away from the housing wall. This prevents a displacement of the absorption material from the respectively immediately adjacent region of the housing wall.
  • Such a configuration lends itself, for example, when an absorption material is used which does not have sufficient dimensional stability and which, for example, is not glued to the inside of the housing wall.
  • the fabric is designed as a wire mesh, preferably as a stainless steel wire mesh, as a preferred, galvanized steel mesh or aluminum mesh.
  • the fabric may also be made of another suitable metal.
  • Each wire may be formed as a single core.
  • a wire can also consist of a twisted bundle of individual wires. Due to its design, in contrast to a known perforated plate, a tissue has a very large number of openings with respect to a surface, so that a very large sound-damping effect is achieved thereby. At the same time allows a wire mesh in case of contamination due to its smooth surfaces easy cleaning.
  • the thickness d of at least one wire, preferably all wires, may 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 may be formed of filaments.
  • an endless fiber such as an endless synthetic fiber made of polyester or polyamide, understood. Filaments thus have an almost unlimited length. Filaments can be formed as a single fiber or as a bundle of several individual filaments.
  • the thickness d of at least one filament, preferably all filaments, may 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 width is understood to mean the clear distance between two adjacent "warp wires" or “weft wires” and, in the case of a woven fabric, for example filaments, the clear distance between two adjacent warp threads or weft threads.
  • the absorbent material may comprise glass wool or rock wool.
  • the absorption material may also consist entirely of glass wool or rock wool.
  • the silencer may be formed as a pipe silencer.
  • the housing wall is encircling and forms an air line with two ends for connection to other components of a ventilation and air conditioning and / or ventilation system.
  • the likewise tubular-shaped cover is provided, wherein between the outside of the cover and the inside of the housing wall, the likewise tubular absorption material is arranged.
  • silencer 1 is designed as a pipe silencer.
  • the silencer element 1 has two ends 2, 3, by means of which the silencer element 1 is connected to other components of an air conditioning and / or ventilation system, not shown.
  • the sound-damping element 1 has an outer-side housing wall 4. At a distance from the inside of the housing wall 4, a cover 5 is arranged. Between the inside of the housing wall 4 and the cover 5, a mat-shaped absorbent material 6 is arranged. The absorption material 6 serves to absorb sound from a gaseous medium flowing along the side of the cover element 5 facing away from the absorption material 6 in the direction of the arrow 7. The sound-damping element 1 forms so far a between the ends 2, 3 extending channel portion with a round flow cross-section.
  • silencing element 1 has a round configuration, so that in this respect the housing wall 4, the cover 5 and the absorbent material 6 each form a round tubular structure.
  • the absorption material 6 may comprise, for example, rockwool or consist entirely of rockwool.
  • the cover 5 is formed as a mesh-like fine-mesh fabric having a plurality of corresponding openings 8.
  • the square holes 8 formed in this case are arranged evenly distributed.
  • the fabric is formed as a wire mesh, for example as a stainless steel wire mesh. Every wire is as a single core is formed.
  • the cover 5 is designed and arranged such that it counteracts a displacement of the absorbent material 6 away from the housing wall 4.
  • the fabric consists of a wire system of longitudinal "warp wires" and transversely extending "weft wires".
  • the thickness d of each wire is between 0.1 mm and 0.5 mm, preferably between 0.15 mm and 0.4 mm, more 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.

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  • 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)

Abstract

Die Erfindung betrifft ein Schalldämpfelement (1) für eine raumlufttechnische Klima- und/oder Lüftungsanlage, wobei das Schalldämpfelement (1) eine Gehäusewand (4), ein im Abstand zur Innenseite der Gehäusewand (4) angeordnetes und zumindest eine Öffnung (8) aufweisendes Abdeckelement (5) sowie ein Absorptionsmaterial (6) umfasst, wobei das Absorptionsmaterial (6) zwischen der Innenseite der Gehäusewand (4) und dem Abdeckelement (5) angeordnet ist und zur Absorption von Schall aus einem entlang der dem Absorptionsmaterial (6) abgewandten Seite des Abdeckelementes (5) strömenden gasförmigen Mediums dient. Um die vorgenannten Nachteile zu vermeiden und ein Schalldämpfelement anzugeben, das eine einfachere Konstruktion aufweist und das einen Austrag an Fasern aus dem Absorptionsmaterial in das strömende Medium größtmöglich verhindert, soll das Abdeckelement (5) als ein netzartiges feinmaschiges Gewebe mit einer Vielzahl entsprechender Öffnungen (8) ausgebildet sein.The invention relates to a sound damping element (1) for a ventilation and air conditioning system, the sound damping element (1) comprising a housing wall (4), a cover element arranged at a distance from the inside of the housing wall (4) and having at least one opening (8) (5) as well as an absorption material (6), the absorption material (6) being arranged between the inside of the housing wall (4) and the cover element (5) and for absorbing sound from a side of the side facing away from the absorption material (6) Cover element (5) flowing gaseous medium is used. In order to avoid the aforementioned disadvantages and to provide a soundproofing element which has a simpler construction and which prevents the fibers from the absorption material from being discharged into the flowing medium as much as possible, the cover element (5) should be a net-like, fine-meshed fabric with a large number of corresponding openings (8 ) be trained.

Description

Die Erfindung betrifft ein Schalldämpfelement für eine raumlufttechnische Klima- und/oder Lüftungsanlage, wobei das Schalldämpfelement eine Gehäusewand, ein im Abstand zur Innenseite der Gehäusewand angeordnetes und zumindest eine Öffnung aufweisendes Abdeckelement sowie ein Absorptionsmaterial umfasst, wobei das Absorptionsmaterial zwischen der Innenseite der Gehäusewand und dem Abdeckelement angeordnet ist und zur Absorption von Schall aus einem entlang der dem Absorptionsmaterial abgewandten Seite des Abdeckelementes strömenden gasförmigen Mediums dient.The invention relates to a silencing element for a room air conditioning and / or ventilation system, wherein the silencer comprises a housing wall, a spaced apart from the inside of the housing wall and at least one opening exhibiting cover member and an absorbent material, wherein the absorption material between the inside of the housing wall and the Covering element is arranged and serves for the absorption of sound from a along the absorbent material side facing away from the Abdeckungseses flowing gaseous medium.

Derartige Schalldämpfelemente arbeiten nach dem Absorptionsprinzip. Bei dem Abdeckelement handelt es sich um ein Blech mit Öffnungen, das als Lochblech ausgebildet ist. Das gasförmige Medium strömt entlang des Abdeckelementes. Die Schallenergie dringt über die Öffnungen des Abdeckelementes in das Absorptionsmaterial ein. Dabei wird ein wesentlicher Anteil der auftreffenden Schallenergie in den Poren des Absorptionsmaterials absorbiert und in Wärme umgewandelt. Um einen Austrag an Fasern aus dem Absorptionsmaterial in das strömende Medium zu vermeiden, muss zwischen dem Absorptionsmaterial und dem Abdeckelement eine zusätzliche Schicht aus einem Glasvlies vorgesehen sein. Aufgrund der zusätzlichen Schicht weisen derartige Schalldämpfelemente eine aufwändige Konstruktion auf. Auch ist der Herstellungsprozess aufwändiger.Such Schalldämpfelemente work on the absorption principle. The cover is a sheet with openings, which is designed as a perforated plate. The gaseous medium flows along the cover. The sound energy penetrates through the openings of the cover into the absorption material. In this case, a significant proportion of the incident sound energy is absorbed in the pores of the absorbent material and converted into heat. In order to avoid a discharge of fibers from the absorption material into the flowing medium, an additional layer of a glass fleece must be provided between the absorption material and the covering element. Due to the additional layer, such silencing elements have a complex construction. Also, the manufacturing process is more complex.

Aufgabe der Erfindung ist es, die vorgenannten Nachteile zu vermeiden und ein Schalldämpfelement anzugeben, das eine einfachere Konstruktion aufweist und das einen Austrag an Fasern aus dem Absorptionsmaterial in das strömende Medium größtmöglich verhindert.The object of the invention is to avoid the aforementioned disadvantages and to provide a silencer, which has a simpler construction and as far as possible prevents a discharge of fibers from the absorbent material in the flowing medium.

Diese Aufgabe wird dadurch gelöst, dass das Abdeckelement als ein netzartiges feinmaschiges Gewebe mit einer Vielzahl entsprechender Öffnungen ausgebildet ist.This object is achieved in that the cover is formed as a mesh-like fine-mesh fabric with a plurality of corresponding openings.

Unter einem Gewebe wird ein Flächengebilde verstanden, das aus mindestens zwei rechtwinklig oder nahezu rechtwinklig verkreuzten Fadensystemen besteht. Das eine Fadensystem besteht aus in Längsrichtung laufenden Kettfäden, während die quer hierzu verlaufenden Schussfäden das zweite Fadensystem bilden. Die Kettfäden gehen in einem bestimmten Rhythmus über und unter den Kettfäden durch.A fabric is understood to mean a fabric consisting of at least two thread systems crossed at right angles or at right angles. The one thread system consists of longitudinally running warp threads, while the weft threads extending transversely thereto form the second thread system. The warp threads go in a certain rhythm over and under the warp threads.

Die Gehäusewand kann umlaufend ohne Bildung von parallel zur Strömungsrichtung ausgerichteten Gehäusekanten ausgebildet sein und insoweit beispielsweise einen runden oder ovalen Strömungsquerschnitt bilden. Sofern das Schalldämpfelement einen eckigen, beispielsweise viereckigen, Querschnitt aufweist, weist das Schalldämpfelement eine entsprechende Anzahl an Gehäusewandabschnitten auf.The housing wall may be formed circumferentially without the formation of aligned parallel to the flow direction housing edges and extent, for example, form a round or oval flow cross-section. If the sound-damping element has an angular, for example quadrangular, cross-section, the sound-damping element has a corresponding number of housing wall sections.

Die Öffnungen sind so hinreichend klein dimensioniert, dass sie einen Durchtritt von Fasern aus dem Absorptionsmaterial in das strömende Medium verhindern. Die Feinmaschigkeit erlaubt eine hinreichende akustische Transparenz, verhindert jedoch gleichzeitig einen Austrag an Fasern aus dem Absorptionsmaterial durch das Abdeckelement in das strömende Medium.The openings are dimensioned sufficiently small that they prevent passage of fibers from the absorbent material in the flowing medium. The fine mesh allows a sufficient acoustic transparency, but at the same time prevents a discharge of fibers from the absorbent material through the cover in the flowing medium.

Die erfindungsgemäße Ausgestaltung zeichnet sich durch eine einfachere konstruktive Ausgestaltung aus, so dass damit auch der Herstellprozess vereinfacht wird. Es bedarf keiner zusätzlichen Schicht mehr. Vielmehr grenzt das Abdeckelement unmittelbar an das Absorptionsmaterial an. Das Absorptionsmaterial kann auch direkt an dem Abdeckelement anliegen. Da kein unerwünschter Faserübergang aus dem Absorptionsmaterial in das gasförmige Medium erfolgt, kann das erfindungsgemäße Schalldämpfelement auch zur Belüftung oder zur Entlüftung von Räumen, die höhere hygienische Anforderungen erfüllen müssen, verwendet werden.The embodiment of the invention is characterized by a simpler structural design, so that thus the manufacturing process is simplified. It does not require an additional layer. Rather, the cover adjacent directly to the absorbent material. The absorption material can also rest directly on the cover. Because no unwanted Fiber transition occurs from the absorption material into the gaseous medium, the sound-damping element according to the invention can also be used for ventilation or ventilation of rooms that need to meet higher hygienic requirements.

Für eine gute Schalldämpfung bietet es sich an, wenn die Öffnungen gleichmäßig in dem Abdeckelement verteilt angeordnet sind.For a good soundproofing, it makes sense if the openings are evenly distributed in the cover.

Das Abdeckelement kann derart ausgebildet und angeordnet sein, dass es einer Verlagerung des Absorptionsmaterials von der Gehäusewand weg entgegenwirkt. Damit wird eine Verlagerung des Absorptionsmaterials von dem jeweils unmittelbar benachbarten Bereich der Gehäusewand verhindert. Eine solche Ausgestaltung bietet sich beispielsweise an, wenn ein Absorptionsmaterial eingesetzt wird, welches keine hinreichende Formstabilität aufweist und welches beispielsweise nicht mit der Innenseite der Gehäusewand verklebt ist.The cover element can be designed and arranged such that it counteracts a displacement of the absorption material away from the housing wall. This prevents a displacement of the absorption material from the respectively immediately adjacent region of the housing wall. Such a configuration lends itself, for example, when an absorption material is used which does not have sufficient dimensional stability and which, for example, is not glued to the inside of the housing wall.

Es bietet sich an, wenn das Gewebe als Drahtgewebe, vorzugsweise als Edelstahl-Drahtgewebe, als vorzugsweise, verzinktes Stahlgewebe oder als Aluminiumgewebe, ausgebildet ist. Das Gewebe kann auch aus einem anderen geeigneten Metall bestehen. Jeder Draht kann als einzelne Ader ausgebildet sein. Ein Draht kann aber auch aus einem in sich verdrehten Bündel an Einzeldrähten bestehen. Ein Gewebe weist aufgrund seiner Ausgestaltung im Gegensatz zu einem bekannten Lochblech eine sehr große Anzahl an Öffnungen bezogen auf eine Fläche auf, so dass damit eine sehr große Schalldämpfwirkung erzielt wird. Gleichzeitig ermöglicht ein Drahtgewebe im Falle einer Verschmutzung aufgrund seiner glatten Oberflächen eine leichte Reinigung.It is advisable if the fabric is designed as a wire mesh, preferably as a stainless steel wire mesh, as a preferred, galvanized steel mesh or aluminum mesh. The fabric may also be made of another suitable metal. Each wire may be formed as a single core. A wire can also consist of a twisted bundle of individual wires. Due to its design, in contrast to a known perforated plate, a tissue has a very large number of openings with respect to a surface, so that a very large sound-damping effect is achieved thereby. At the same time allows a wire mesh in case of contamination due to its smooth surfaces easy cleaning.

Die Dicke d zumindest eines Drahts, vorzugsweise aller Drähte, kann zwischen 0,1 mm und 0,5 mm, vorzugsweise zwischen 0,15 mm und 0,4 mm, besonders bevorzugt zwischen 0,2 mm und 0,32 mm, betragen.The thickness d of at least one wire, preferably all wires, may 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.

Alternativ kann das Gewebe aus Filamenten ausgebildet sein. Unter einem Filament wird eine Endlosfaser, wie beispielsweise eine endlose Chemiefaser aus Polyester oder Polyamid, verstanden. Filamente haben damit praktisch eine unbegrenzte Länge. Filamente können als Einzelfaser oder als Bündel aus mehreren Einzelfilamenten ausgebildet sein.Alternatively, the fabric may be formed of filaments. Under a filament is an endless fiber, such as an endless synthetic fiber made of polyester or polyamide, understood. Filaments thus have an almost unlimited length. Filaments can be formed as a single fiber or as a bundle of several individual filaments.

Die Dicke d zumindest eines Filaments, vorzugsweise aller Filamente, kann zwischen 0,1 mm und 0,5 mm, vorzugsweise zwischen 0,15 mm und 0,4 mm, besonders bevorzugt zwischen 0,2 mm und 0,32 mm, betragen.The thickness d of at least one filament, preferably all filaments, may 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.

Es bietet sich an, wenn die Maschenweite w des Gewebes zwischen 0,15 mm und 0,7 mm, vorzugsweise zwischen 0,2 mm und 0,6 mm, besonders bevorzugt zwischen 0,3 mm und 0,5 mm, liegt. Unter der Maschenweite wird bei einem Drahtgewebe der lichte Abstand zwischen zwei benachbarten "Kettdrähten" bzw. "Schussdrähten" und bei einem Gewebe beispielsweise aus Filamenten der lichte Abstand zwischen zwei benachbarten Kettfäden oder Schussfäden verstanden.It is advisable if 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. In the case of a wire mesh, the mesh width is understood to mean the clear distance between two adjacent "warp wires" or "weft wires" and, in the case of a woven fabric, for example filaments, the clear distance between two adjacent warp threads or weft threads.

Das Absorptionsmaterial kann Glaswolle oder Steinwolle umfassen. Das Absorptionsmaterial kann aber auch vollständig aus Glaswolle oder aus Steinwolle bestehen.The absorbent material may comprise glass wool or rock wool. The absorption material may also consist entirely of glass wool or rock wool.

Das Schalldämpfelement kann als Rohrschalldämpfer ausgebildet sein. Bei einer solchen Ausgestaltung ist die Gehäusewand umlaufend und bildet eine Luftleitung mit zwei Enden zum Anschluss an weitere Komponenten einer raumlufttechnischen Klima- und/oder Lüftungsanlage. In dem Schalldämpfelement ist das ebenfalls rohrförmig ausgebildete Abdeckelement vorgesehen, wobei zwischen der Außenseite des Abdeckelementes und der Innenseite der Gehäusewand das ebenfalls rohrförmig ausgebildete Absorptionsmaterial angeordnet ist.The silencer may be formed as a pipe silencer. In such an embodiment, the housing wall is encircling and forms an air line with two ends for connection to other components of a ventilation and air conditioning and / or ventilation system. In the sound-damping element, the likewise tubular-shaped cover is provided, wherein between the outside of the cover and the inside of the housing wall, the likewise tubular absorption material is arranged.

Im Folgenden werden in den Zeichnungen dargestellte Ausführungsbeispiele der Erfindung erläutert. Es zeigen:

Fig. 1
einen Schnitt durch ein als Rohrschalldämpfer ausgebildetes Schalldämpfelement und
Fig. 2
eine Draufsicht auf einen Teilbereich eines Abdeckelementes.
Embodiments of the invention illustrated in the drawings are explained below. Show it:
Fig. 1
a section through a designed as a pipe muffler Schalldämpfelement and
Fig. 2
a plan view of a portion of a cover.

In allen Figuren werden für gleiche bzw. gleichartige Bauteile übereinstimmende Bezugszeichen verwendet.In all figures the same reference numerals are used for identical or similar components.

Das in Fig. 1 dargestellte Schalldämpfelement 1 ist als Rohrschalldämpfer ausgebildet. Das Schalldämpfelement 1 weist zwei Enden 2, 3 auf, mittels derer das Schalldämpfelement 1 an weitere Komponenten einer nicht dargestellten raumlufttechnischen Klima- und/oder Lüftungsanlage angeschlossen ist.This in Fig. 1 shown silencer 1 is designed as a pipe silencer. The silencer element 1 has two ends 2, 3, by means of which the silencer element 1 is connected to other components of an air conditioning and / or ventilation system, not shown.

Das Schalldämpfelement 1 weist eine außenseitige Gehäusewand 4 auf. Im Abstand zur Innenseite der Gehäusewand 4 ist ein Abdeckelement 5 angeordnet. Zwischen der Innenseite der Gehäusewand 4 und dem Abdeckelement 5 ist ein mattenförmig ausgebildetes Absorptionsmaterial 6 angeordnet. Das Absorptionsmaterial 6 dient zur Absorption von Schall aus einem entlang der dem Absorptionsmaterial 6 abgewandten Seite des Abdeckelementes 5 in Richtung des Pfeils 7 strömenden gasförmigen Mediums. Das Schalldämpfelement 1 bildet insoweit einen sich zwischen den Enden 2, 3 erstreckenden Kanalabschnitt mit einem runden Strömungsquerschnitt.The sound-damping element 1 has an outer-side housing wall 4. At a distance from the inside of the housing wall 4, a cover 5 is arranged. Between the inside of the housing wall 4 and the cover 5, a mat-shaped absorbent material 6 is arranged. The absorption material 6 serves to absorb sound from a gaseous medium flowing along the side of the cover element 5 facing away from the absorption material 6 in the direction of the arrow 7. The sound-damping element 1 forms so far a between the ends 2, 3 extending channel portion with a round flow cross-section.

Das in Fig. 1 dargestellte Schalldämpfelement 1 weist eine runde Ausgestaltung auf, so dass insoweit die Gehäusewand 4, das Abdeckelement 5 und das Absorptionsmaterial 6 jeweils ein rundes rohrförmiges Gebilde bilden. Das Absorptionsmaterial 6 kann beispielsweise Steinwolle umfassen oder auch vollständig aus Steinwolle bestehen.This in Fig. 1 shown silencing element 1 has a round configuration, so that in this respect the housing wall 4, the cover 5 and the absorbent material 6 each form a round tubular structure. The absorption material 6 may comprise, for example, rockwool or consist entirely of rockwool.

Wie in Fig. 2 dargestellt, ist das Abdeckelement 5 als ein netzartiges feinmaschiges Gewebe mit einer Vielzahl entsprechender Öffnungen 8 ausgebildet. Die in diesem Fall viereckig ausgebildeten Öffnungen 8 sind gleichmäßig verteilt angeordnet.As in Fig. 2 shown, the cover 5 is formed as a mesh-like fine-mesh fabric having a plurality of corresponding openings 8. The square holes 8 formed in this case are arranged evenly distributed.

In dem dargestellten Ausführungsbeispiel ist das Gewebe als Drahtgewebe, beispielsweise als Edelstahl-Drahtgewebe, ausgebildet. Jeder Draht ist als eine einzelne Ader ausgebildet. Insoweit ist das Abdeckelement 5 derart ausgebildet und angeordnet, dass es einer Verlagerung des Absorptionsmaterials 6 von der Gehäusewand 4 weg entgegenwirkt.In the illustrated embodiment, the fabric is formed as a wire mesh, for example as a stainless steel wire mesh. Every wire is as a single core is formed. In that regard, the cover 5 is designed and arranged such that it counteracts a displacement of the absorbent material 6 away from the housing wall 4.

Das Gewebe besteht aus einem Drahtsystem aus in Längsrichtung laufenden "Kettdrähten" und hierzu quer verlaufenden "Schussdrähten". Die Dicke d jedes Drahts beträgt zwischen 0,1 mm und 0,5 mm, vorzugsweise zwischen 0,15 mm und 0,4 mm, besonders bevorzugt zwischen 0,2 mm und 0,32 mm. Die Maschenweite w des Gewebes liegt zwischen 0,15 mm und 0,7 mm, vorzugsweise zwischen 0,2 mm und 0,6 mm, besonders bevorzugt zwischen 0,3 mm und 0,5 mm.The fabric consists of a wire system of longitudinal "warp wires" and transversely extending "weft wires". The thickness d of each wire is between 0.1 mm and 0.5 mm, preferably between 0.15 mm and 0.4 mm, more 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.

Claims (10)

Schalldämpfelement (1) für eine raumlufttechnische Klima- und/oder Lüftungsanlage, wobei das Schalldämpfelement (1) eine Gehäusewand (4), ein im Abstand zur Innenseite der Gehäusewand (4) angeordnetes und zumindest eine Öffnung (8) aufweisendes Abdeckelement (5) sowie ein Absorptionsmaterial (6) umfasst, wobei das Absorptionsmaterial (6) zwischen der Innenseite der Gehäusewand (4) und dem Abdeckelement (5) angeordnet ist und zur Absorption von Schall aus einem entlang der dem Absorptionsmaterial (6) abgewandten Seite des Abdeckelementes (5) strömenden gasförmigen Mediums dient, dadurch gekennzeichnet, dass das Abdeckelement (5) als ein netzartiges feinmaschiges Gewebe mit einer Vielzahl entsprechender Öffnungen (8) ausgebildet ist.Acoustic damping element (1) for a room air conditioning and / or ventilation system, wherein the silencing element (1) comprises a housing wall (4), a cover element (5) arranged at a distance from the inside of the housing wall (4) and having at least one opening (8) an absorption material (6), wherein the absorption material (6) is arranged between the inside of the housing wall (4) and the cover element (5) and for absorbing sound from a side of the cover element (5) facing away from the absorption material (6). serving flowing gaseous medium, characterized in that the cover (5) is formed as a mesh-like fine-mesh fabric having a plurality of corresponding openings (8). Schalldämpfelement (1) nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die Öffnungen (8) gleichmäßig verteilt angeordnet sind.Silencer element (1) according to the preceding claim, characterized in that the openings (8) are arranged distributed uniformly. Schalldämpfelement (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Abdeckelement (5) derart ausgebildet und angeordnet ist, dass es einer Verlagerung des Absorptionsmaterials (6) von der Gehäusewand (4) weg entgegenwirkt.Sound-absorbing element (1) according to one of the preceding claims, characterized in that the cover element (5) is designed and arranged such that it counteracts a displacement of the absorption material (6) away from the housing wall (4). Schalldämpfelement (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Gewebe als Drahtgewebe, vorzugsweise als Edelstahl-Drahtgewebe, als vorzugsweise, verzinktes Stahlgewebe oder als Aluminiumgewebe, ausgebildet ist.Silencer (1) according to any one of the preceding claims, characterized in that the fabric as a wire mesh, preferably as a stainless steel wire mesh, as preferably, galvanized steel fabric or as aluminum fabric is formed. Schalldämpfelement (1) nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die Dicke d zumindest eines Drahts, vorzugsweise aller Drähte, zwischen 0,1 mm und 0,5 mm, vorzugsweise zwischen 0,15 mm und 0,4 mm, besonders bevorzugt zwischen 0,2 mm und 0,32 mm, beträgt.Sound-absorbing element (1) according to the preceding claim, characterized in that the thickness d of at least one wire, preferably all wires, between 0.1 mm and 0.5 mm, preferably between 0.15 mm and 0.4 mm, more preferably between 0.2 mm and 0.32 mm. Schalldämpfelement (1) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Gewebe aus Filamenten ausgebildet ist.Silencer element (1) according to one of claims 1 to 3, characterized in that the fabric is formed from filaments. Schalldämpfelement (1) nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die Dicke d zumindest eines Filaments, vorzugsweise aller Filamente, zwischen 0,1 mm und 0,5 mm, vorzugsweise zwischen 0,15 mm und 0,4 mm, besonders bevorzugt zwischen 0,2 mm und 0,32 mm, beträgt.Sound-absorbing element (1) according to the preceding claim, characterized in that the thickness d of at least one filament, preferably all filaments, between 0.1 mm and 0.5 mm, preferably between 0.15 mm and 0.4 mm, more preferably between 0.2 mm and 0.32 mm. Schalldämpfelement (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Maschenweite w des Gewebes zwischen 0,15 mm und 0,7 mm, vorzugsweise zwischen 0,2 mm und 0,6 mm, besonders bevorzugt zwischen 0,3 mm und 0,5 mm, liegt.Silencer element (1) according to one of the preceding claims, characterized in that 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. Schalldämpfelement (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Absorptionsmaterial (6) Glaswolle oder Steinwolle umfasst.Silencer element (1) according to one of the preceding claims, characterized in that the absorption material (6) comprises glass wool or rock wool. Schalldämpfelement (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Schalldämpfelement (1) als Rohrschalldämpfer ausgebildet ist.Silencer element (1) according to one of the preceding claims, characterized in that the silencer element (1) is designed as a pipe silencer.
EP19151310.0A 2018-01-11 2019-01-11 Acoustic damping element for a ventilation and/or air conditioning system Active EP3511641B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202018100139.6U DE202018100139U1 (en) 2018-01-11 2018-01-11 Silencer element for a room air conditioning and / or ventilation system

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EP3511641A1 true EP3511641A1 (en) 2019-07-17
EP3511641B1 EP3511641B1 (en) 2023-05-03

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EP (1) EP3511641B1 (en)
DE (1) DE202018100139U1 (en)
DK (1) DK3511641T3 (en)
ES (1) ES2946335T3 (en)
PL (1) PL3511641T3 (en)

Citations (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
US5784784A (en) * 1995-10-20 1998-07-28 Carrier Corporation Method of making a refrigeration compressor muffler
DE19920050A1 (en) * 1998-09-11 2000-11-09 Jacobs Heinz Josef Ventilation channel with sound damping component extending in flow direction and having angular ring-shaped cross-section crossways to flow direction

Patent Citations (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
US5784784A (en) * 1995-10-20 1998-07-28 Carrier Corporation Method of making a refrigeration compressor muffler
DE19920050A1 (en) * 1998-09-11 2000-11-09 Jacobs Heinz Josef Ventilation channel with sound damping component extending in flow direction and having angular ring-shaped cross-section crossways to flow direction

Also Published As

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EP3511641B1 (en) 2023-05-03
DK3511641T3 (en) 2023-06-12
DE202018100139U1 (en) 2018-04-09
PL3511641T3 (en) 2023-08-28
ES2946335T3 (en) 2023-07-17

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