EP0498261B1 - Sound insulation for containers, apparatus and pipelines - Google Patents

Sound insulation for containers, apparatus and pipelines Download PDF

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Publication number
EP0498261B1
EP0498261B1 EP92101320A EP92101320A EP0498261B1 EP 0498261 B1 EP0498261 B1 EP 0498261B1 EP 92101320 A EP92101320 A EP 92101320A EP 92101320 A EP92101320 A EP 92101320A EP 0498261 B1 EP0498261 B1 EP 0498261B1
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EP
European Patent Office
Prior art keywords
wall
sound insulation
containers
pipelines
distance
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.)
Expired - Lifetime
Application number
EP92101320A
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German (de)
French (fr)
Other versions
EP0498261A2 (en
EP0498261A3 (en
Inventor
Dietmar Dr. Eckoldt
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.)
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Original Assignee
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
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.)
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Application filed by Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV filed Critical Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Publication of EP0498261A2 publication Critical patent/EP0498261A2/en
Publication of EP0498261A3 publication Critical patent/EP0498261A3/en
Application granted granted Critical
Publication of EP0498261B1 publication Critical patent/EP0498261B1/en
Anticipated expiration legal-status Critical
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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

Definitions

  • the invention relates to sound insulation for containers, apparatus and pipes according to. the preamble of claim 1, as used in plant construction, when sound sources are arranged in them or noise is radiated into them and the environment is therefore exposed to sound via their wall.
  • the containers, apparatuses or lines are expediently encased with an outer wall, usually made of sheet metal, an additional anti-drumming covering being applied to the outer sheet on the inside or outside.
  • the outer wall is usually at a distance of about 10 cm to 30 cm from the noise-emitting wall.
  • heat and sound insulation e.g. Mineral wool can be introduced.
  • this is done by attaching an intermediate wall in front of the outer wall. This partition then vibrates due to the sound and the sound waves are converted into mechanical vibrations, whereby the sound is absorbed.
  • the distance between the intermediate wall and the outer wall should be approximately 0.01-1 mm.
  • a space between 0.3 and 0.7 mm is particularly suitable.
  • the constant distance between the two walls is not decisive.
  • FIGS. 1 and 2 In noise-filled systems, such as ducts or components, the wall of which is designated 1, an outer sheet metal shell 6 is applied to the outside of the wall, which now brings about improvement in sound insulation in conjunction with acoustic damping 2 of the cavity between the outer wall and the sheet metal shell in front. If there are high acoustic requirements for the improvement of sound insulation, the outer, usually 1 - 2 mm thick sheet metal shell is now covered with anti-drumming materials 5, usually 2 - 3 times the sheet thickness. This increases the sound insulation by the fact that the weight per unit area increases significantly and that Bending shafts can be dampened in the outer sheet metal shell. The outer sheet metal shell 6 is held by means of spacers 3.
  • Sound absorption material for example mineral wool 2
  • a substructure 4 for example a profile, can be arranged on the spacer 3.
  • the outer plate 6 is fastened thereon by means of screws or rivets 8.
  • an anti-drumming coating 5 is now additionally applied to the sheet 6. This is glued or sprayed or filled.
  • the solvent evaporates and the anti-noise coating with a thickness of two to three times the thickness remains on the sheet. This application method is harmful because of the solvent vapors, and is also time-consuming and therefore expensive.
  • the anti-drumming covering is not heat-resistant and even flammable.
  • Fig. 2 shows the application of the invention to such components.
  • the intermediate wall 7 according to the invention is attached in front of the sheet metal wall 6.
  • This sheet of metal is about half as thick. It is only necessary to ensure that a small air gap 9 of approximately 0.5 mm remains between the two sheets. This can e.g. at the fastening points of the outer sheet metal shell by placing a 0.5 cm thick sheet of metal underneath.
  • the advantages according to the invention are, in particular, simple assembly, the solution according to the invention can also be subjected to high temperatures, and is also non-combustible, cheaper and lighter.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Thermal Insulation (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Pipe Accessories (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Building Environments (AREA)

Abstract

The invention relates to sound insulation for containers, apparatus and pipelines, these being insulated by means of spacers with an outer wall, and if necessary a porous absorber, e.g. mineral wool, is arranged in the interspace, an intermediate wall being arranged as sound insulation before the outer wall, with a thickness of about half that of the outer wall and a spacing from it of about 0.5 mm. <IMAGE>

Description

Die Erfindung betrifft eine Schallisolierung für Behälter, Apparate und Rohrleitungen gem. dem Oberbegriff des Anspruchs 1, wie sie im Anlagenbau Verwendung findet, wenn in ihnen Schallquellen angeordnet sind oder Lärm in sie eingestrahlt wird und die Umgebung daher über ihre Wand mit Schall beaufschlagt wird.The invention relates to sound insulation for containers, apparatus and pipes according to. the preamble of claim 1, as used in plant construction, when sound sources are arranged in them or noise is radiated into them and the environment is therefore exposed to sound via their wall.

Im Anlagenbau emittieren derartige Behälter, Apparate und Rohrleitungen oft Schall, so daß sie schallisoliert werden müssen. Zweckmäßigerweise umhüllt man die Behälter, Apparate bzw. Leitungen mit einer Außenwand, meistens aus Blech, wobei man ggf. auf das Außenblech auf der Innen- oder Außenseite noch zusätzlich einen Antidröhnbelag aufbringt. Die Außenwand hat dabei in der Regel einen Abstand von etwa 10 cm bis 30 cm von der Lärm emittierenden Wand. In dem Zwischenraum kann zur Wärme- und Schallisolierung z.B. Mineralwolle eingebracht werden.In plant engineering, such containers, apparatus and pipelines often emit sound, so that they have to be soundproofed. The containers, apparatuses or lines are expediently encased with an outer wall, usually made of sheet metal, an additional anti-drumming covering being applied to the outer sheet on the inside or outside. The outer wall is usually at a distance of about 10 cm to 30 cm from the noise-emitting wall. In the interspace, for heat and sound insulation, e.g. Mineral wool can be introduced.

Wegen der gestiegenen Lärmemissionsanforderungen hat sich gezeigt, daß der Schallminderung oft nur durch die entsprechenden Antidröhnbeläge auf der Außenwand Genüge geleistet werden kann. Das Aufbringen dieser Beläge ist jedoch aufwendig, umweltschädlich und teuer. Der Erfindung liegt daher die Aufgabe zugrunde, diesen Antidröhnbelag durch eine andere geeignete Maßnahme zu ersetzen.Due to the increased noise emission requirements, it has been shown that noise reduction can often only be achieved by using the appropriate anti-drumming coatings on the outer wall. The application of these coverings is complex, environmentally harmful and expensive. The invention is therefore based on the object of replacing this anti-drumming coating with another suitable measure.

Erfindungsgemäß geschient dies durch die Anbringung einer Zwischenwand vor der Außenwand. Diese Zwischenwand gerät dann durch den Schall in Schwingungen und die Schallwellen werden in mechanische Schwingungen umgewandelt, wodurch der Schall absorbiert wird.According to the invention, this is done by attaching an intermediate wall in front of the outer wall. This partition then vibrates due to the sound and the sound waves are converted into mechanical vibrations, whereby the sound is absorbed.

Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen gekennzeichnet.Advantageous embodiments of the invention are characterized in the subclaims.

Die Anbringung dieses Zusatzbleches auf dem Außenblech ist außerordentlich einfach zu bewerkstelligen.The attachment of this additional sheet on the outer sheet is extremely easy to do.

Damit ein hoher Absorptionswirkungsgrad bewerkstelligt wird, soll der Abstand der Zwischenwand von der Außenwand etwa 0,01 - 1 mm betragen. Ganz besonders geeignet ist ein Zwischenraum zwischen 0,3 und 0,7 mm. Der gleichbleibende Abstand der beiden Wände ist dabei nicht ausschlaggebend.In order to achieve a high absorption efficiency, the distance between the intermediate wall and the outer wall should be approximately 0.01-1 mm. A space between 0.3 and 0.7 mm is particularly suitable. The constant distance between the two walls is not decisive.

Es kann sich auch als zweckmäßig erweisen, wenn besonders hohe Anforderungen an die Lärmemission gestellt sind, die Außenwand oder die Zwischenwand zusätzlich mit einem Antidröhnbeleg zu versehen.It can also prove expedient, if particularly high demands are made on the noise emission, to additionally provide the outer wall or the intermediate wall with an anti-drumming slip.

In der Zeitschrift "Acustica", Band 51, 1982, Seiten 201 - 212, ist in dem Artikel "Körperschalldämpfung mittels Gas- oder Flüssigkeitsschichten" von A. Trochidis, die Theorie zu der erfindungsgemäßen Anordnung beschrieben.In the magazine "Acustica", volume 51, 1982, pages 201-212, the theory of the arrangement according to the invention is described in the article "Structure-borne noise damping by means of gas or liquid layers" by A. Trochidis.

In der Praxis ist dieser Vorschlag jedoch noch nicht angewandt worden, vermutlich weil er für zu teuer gehalten wurde und für akustisch nicht sehr wirkungsvoll. Neuere Untersuchungen der Anwendung haben jedoch gezeigt, daß in der Praxis bei Behältern, Apparaten und Rohrleitungen im Anlagenbau die erfindungsgemäße Schallisolierung hervorragend geeignet ist, die Schallabstrahlung zu verringern. Es hat sich auch gezeigt, daß die Anwendung dieser bekannten Theorie in der Praxis mindestens ebenso wirkungsvoll ist wie ein Antidröhnbelag.In practice, however, this proposal has not yet been used, presumably because it was considered to be too expensive and not very effective acoustically. However, recent studies of the application have shown that in practice in the case of containers, apparatus and pipelines in plant construction, the sound insulation according to the invention is extremely suitable for reducing the sound radiation. It has also been shown that the application of this known theory in practice is at least as effective as an anti-drumming coating.

Die Erfindung soll nun anhand der Figuren 1 und 2 kurz erläutert werden:
Bei lärmerfüllten Anlagen, z.B. Kanälen oder Bauteilen, deren Wand mit 1 bezeichnet ist, wird eine äußere Blechschale 6 außen auf die Wandung aufgebracht, die nunmehr die Verbesserung der Schalldämmung in Verbindung mit einer akustischen Bedämpfung 2 des Hohlraums zwischen Außenwand und vorgesetzter Blechschale bewirkt. Bei hohen akustischen Anforderungen an die Verbesserung der Schalldämmung wird nun die außere, meist 1 - 2 mm dicke Blechschale mit Antidröhnmaterialien 5 in meist 2 - 3facher Blechstärke belegt. Damit wird das Schalldämmaß dadurch erhöht, daß das Flächengewicht stark zunimmt und daß Biegewellen in der äußeren Blechschale gedämpft werden. Die äußere Blechschale 6 wird dabei mittels Abstandshalter 3 gehalten. In die Zwischenschicht wird Schallabsorptionsmaterial, z.B. Mineralwolle 2 eingebracht. Auf dem Abstandshalter 3 kann eine Unterkonstruktion 4, z.B. ein Profil, angeordnet sein. Das Außenblech 6 ist darauf mittels Schrauben oder Nieten 8 befestigt. Auf das Blech 6 wird nun in vielen Fällen zusätzlich noch ein Antidröhnbelag 5 aufgebracht. Dieser wird aufgeklebt oder gespritzt oder gespachtelt. Das Lösungsmittel verdampft und zurück bleibt auf dem Blech der Antidröhnbelag mit einer Dicke von der zwei- bis dreifachen Blechstärke. Dieses Aufbringverfahren ist wegen der Lösungsmitteldämpfe schädlich, außerdem zeitaufwendig und deshalb teuer. Zudem ist der Antidröhnbelag nicht hitzebeständig und sogar brennbar.The invention will now be briefly explained with reference to FIGS. 1 and 2:
In noise-filled systems, such as ducts or components, the wall of which is designated 1, an outer sheet metal shell 6 is applied to the outside of the wall, which now brings about improvement in sound insulation in conjunction with acoustic damping 2 of the cavity between the outer wall and the sheet metal shell in front. If there are high acoustic requirements for the improvement of sound insulation, the outer, usually 1 - 2 mm thick sheet metal shell is now covered with anti-drumming materials 5, usually 2 - 3 times the sheet thickness. This increases the sound insulation by the fact that the weight per unit area increases significantly and that Bending shafts can be dampened in the outer sheet metal shell. The outer sheet metal shell 6 is held by means of spacers 3. Sound absorption material, for example mineral wool 2, is introduced into the intermediate layer. A substructure 4, for example a profile, can be arranged on the spacer 3. The outer plate 6 is fastened thereon by means of screws or rivets 8. In many cases, an anti-drumming coating 5 is now additionally applied to the sheet 6. This is glued or sprayed or filled. The solvent evaporates and the anti-noise coating with a thickness of two to three times the thickness remains on the sheet. This application method is harmful because of the solvent vapors, and is also time-consuming and therefore expensive. In addition, the anti-drumming covering is not heat-resistant and even flammable.

Fig. 2 zeigt die Anwendung der Erfindung bei derartigen Bauteilen. Vor der Blechwand 6 ist die erfindungsgemäße Zwischenwand 7 angebracht. Diese Blechtafel ist etwa halb so dick. Es muß nur darauf geachtet werden, daß zwischen den beiden Blechen ein kleiner Luftspalt 9 von ca. 0,5 mm verbleibt. Das kann z.B. an den Befestigungspunkten der äußeren Blechschale durch unterlegen eines 0,5 cm dicken Blechstreifens geschehen. Die erfindungsgemäßen Vorteile sind insbesondere einfache Montage, die erfindungsgemäße Lösung ist auch mit hohen Temperaturen belastbar, weiterhin nicht brennbar, billiger und leichter.Fig. 2 shows the application of the invention to such components. The intermediate wall 7 according to the invention is attached in front of the sheet metal wall 6. This sheet of metal is about half as thick. It is only necessary to ensure that a small air gap 9 of approximately 0.5 mm remains between the two sheets. This can e.g. at the fastening points of the outer sheet metal shell by placing a 0.5 cm thick sheet of metal underneath. The advantages according to the invention are, in particular, simple assembly, the solution according to the invention can also be subjected to high temperatures, and is also non-combustible, cheaper and lighter.

Claims (7)

  1. Enveloping sound insulation for containers, apparatus and pipelines (1), comprising spacers (3) and an outer wall (6),
    characterised in that
    an intermediate wall (7) is arranged in front of the outer wall (6) as sound insulation and is approximately half the thickness of the outer wall (6) and at a distance of 0.01 - 1.0 mm from same.
  2. Sound insulation according to claim 1,
    characterised in that
    the distance is 0.1 - 0.8 mm.
  3. Sound insulation according to claim 1,
    characterised in that
    the distance is approximately 0.5 mm.
  4. Sound insulation according to one of claims 1 - 3,
    characterised in that
    the fastening of the intermediate wall 7 and the outer wall 6 is acoustically decoupled.
  5. Sound insulation according to one of claims 1 - 4,
    characterised in that
    an antinoise coating is applied in addition to the outer wall 8 or the intermediate wall 7.
  6. Sound insulation according to claims 1 - 5,
    characterised in that
    the distance between the outer wall and the intermediate wall is effected by spacers.
  7. Sound insulation according to claims 1 - 5,
    characterised in that
    the distance between the outer wall and the intermediate wall is effected by the natural unevenness of the thin metal sheets.
EP92101320A 1991-02-08 1992-01-31 Sound insulation for containers, apparatus and pipelines Expired - Lifetime EP0498261B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4103895 1991-02-08
DE4103895A DE4103895A1 (en) 1991-02-08 1991-02-08 SOUND INSULATION FOR CONTAINERS, APPARATUS AND PIPELINES

Publications (3)

Publication Number Publication Date
EP0498261A2 EP0498261A2 (en) 1992-08-12
EP0498261A3 EP0498261A3 (en) 1993-02-24
EP0498261B1 true EP0498261B1 (en) 1997-07-30

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EP92101320A Expired - Lifetime EP0498261B1 (en) 1991-02-08 1992-01-31 Sound insulation for containers, apparatus and pipelines

Country Status (3)

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EP (1) EP0498261B1 (en)
AT (1) ATE156292T1 (en)
DE (2) DE4103895A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29719553U1 (en) * 1997-11-04 1997-12-18 Weidmueller Interface Cable gland for shielded cables

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19510872A1 (en) * 1995-03-24 1996-09-26 Missel Gmbh & Co E Acoustic insulation system for sanitary fittings
DE19601559A1 (en) * 1996-01-17 1997-07-24 Basf Ag Method for suppressing noise emissions of component parts
DE19702172A1 (en) * 1997-01-23 1998-08-13 Trinova Aeroquip Gmbh Device for noise insulation for vibratable components of a motor vehicle hydraulic system
DE19750102A1 (en) 1997-11-12 1999-06-02 Stankiewicz Gmbh Gas-flowed line with sound absorption effect
US10562672B2 (en) * 2014-08-01 2020-02-18 Vita-Mix Management Corporation Sound dampening blending container

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1242864A (en) * 1968-05-15 1971-08-18 Dunlop Holdings Ltd Acoustical elements
US3963094A (en) * 1974-07-11 1976-06-15 Donley, Miller & Nowikas, Inc. Muffler structures
DK146284C (en) * 1979-10-24 1988-01-18 Rockwool Int SOUND-INSULATING SANDWICH TYPE-PART
DE3132201A1 (en) * 1981-08-14 1983-03-03 Hansdieter 6141 Einhausen Eberle Process and device for fitting panels, forming a facing covering, on walls
US5005557A (en) * 1985-11-29 1991-04-09 Baechli Emil Heat-insulating building and/or light element

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29719553U1 (en) * 1997-11-04 1997-12-18 Weidmueller Interface Cable gland for shielded cables

Also Published As

Publication number Publication date
DE59208735D1 (en) 1997-09-04
DE4103895C2 (en) 1993-04-15
EP0498261A2 (en) 1992-08-12
ATE156292T1 (en) 1997-08-15
EP0498261A3 (en) 1993-02-24
DE4103895A1 (en) 1992-08-13

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