EP2336477B1 - Method of noice reduction by means of a cupboard - Google Patents
Method of noice reduction by means of a cupboard Download PDFInfo
- Publication number
- EP2336477B1 EP2336477B1 EP11002772.9A EP11002772A EP2336477B1 EP 2336477 B1 EP2336477 B1 EP 2336477B1 EP 11002772 A EP11002772 A EP 11002772A EP 2336477 B1 EP2336477 B1 EP 2336477B1
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- EP
- European Patent Office
- Prior art keywords
- profile
- openings
- profile body
- sound
- another
- 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.)
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- 238000000034 method Methods 0.000 title claims description 8
- 238000010521 absorption reaction Methods 0.000 claims description 24
- 230000000694 effects Effects 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 10
- 239000011358 absorbing material Substances 0.000 claims description 4
- 230000002238 attenuated effect Effects 0.000 description 4
- 238000009826 distribution Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000012814 acoustic material Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
- E06B9/08—Roll-type closures
- E06B9/11—Roller shutters
- E06B9/115—Roller shutters specially adapted for furniture
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
- E06B9/08—Roll-type closures
- E06B9/11—Roller shutters
- E06B9/15—Roller shutters with closing members formed of slats or the like
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
- E06B9/08—Roll-type closures
- E06B9/11—Roller shutters
- E06B9/17—Parts or details of roller shutters, e.g. suspension devices, shutter boxes, wicket doors, ventilation openings
- E06B2009/17069—Insulation
Definitions
- the invention relates to a method for noise reduction in offices using a cabinet furniture with a furniture body and at least one front blind, which consists of mutually parallel, interconnected profile elements and is guided in arranged on the furniture body guide grooves.
- Such cabinet furniture are already known from the prior art.
- cabinet furniture in which profile elements for forming a shutter with each adjacent profile elements are pivotally connected and which are provided for opening or closing this cabinet furniture.
- the arranged in various types of profile elements in cabinet furniture shutters or front blinds cause when opening and closing due to the material itself noises.
- a disadvantage of these cabinet furniture from the prior art is seen that, especially when used in, for example, open-plan offices with a high level of noise, the use of this cabinet furniture to distribute the sound level causing sound, as this on the surface of the cabinet furniture and especially the front blinds is reflected back.
- the resulting background noise, especially in larger offices is not conducive to the understanding and working environment of the employees working there.
- a cabinet furniture with a furniture body and a front blind, the profile elements parallel to each other, here called lamellae, and is guided in arranged on the end faces in the walls of the furniture body guide grooves.
- This cabinet furniture should be designed so that the blind can have comparatively high profile elements. This is to be achieved by the fact that the profile elements are connected at their end faces with linking links, pointing on their side facing the center of the front blinds connecting areas with the profile elements and each pointing to the outside to the walls Have sides in the guide grooves engaging pivot pins which are connected via pivot eyelets with the respective adjacent linking member.
- a disadvantage of this cabinet furniture is seen that a sound amplifying effect is achieved by the geometry and the material used of the profile elements of the front blind, since the resulting example in office space sound is reflected back over a large area.
- the US 5 255 970 A discloses a cabinet furniture with a shutter in which are provided for weight saving and thus to facilitate opening and closing operations recesses.
- the FR 1 128 688 A shows an apertured Venetian blind, which serve to ventilate a lockable cabinet with the blind.
- the DE 203 08 240 U1 discloses a composite of individual profiles sound-absorbing front blind in which one or more fleece (s) is introduced into the individual profiles to achieve the desired sound-absorbing effect.
- the profiles have a comparatively complex structure.
- the DE 203 08 239 U1 discloses a method having the features of the preamble of claim 1.
- the object of the invention has been found to improve the disadvantages of the known prior art and show cabinet furniture that can be produced economically and inexpensively.
- spaced-apart openings are introduced both in the first and in the second profile body.
- This solution is simple and has the advantage that the sound can penetrate through the openings in the profile bodies of the profile element in the cabinet furniture and spread there.
- the sound is at least partially absorbed in the cupboard furniture.
- the reflected back from the cabinet furniture sound is now at least partially reflected back from the profile elements of the front blinds in the cabinet furniture, so that only a very small proportion of the sound is reflected back into the room.
- the width of the openings is less than one third of the width of the front of the profile body.
- a size of the surface of all openings of the profile body of the profile element of less than 45% or more than 3% of the surface of the front of the profile body of the profile element leads to dimensionally stable profile elements or front blinds, which depending on the size of have generating surface optimized sound absorption effects.
- a plurality of spaced-apart openings are provided in the longitudinal direction of the profile body. It has proven to be advantageous that the openings are regularly spaced apart, whereby on the one hand the design of the front blinds formed by the profile elements can be designed according to customer requirements, while on the other hand a simultaneously optimized sound absorption effect is present.
- the distance of the openings in the longitudinal direction of the profile body is greater than twice the extent of the openings seen in the cross section of the profile body.
- first profile body or the second profile body of the profile element consist of an open-celled foamed material with densities of about 0.4 to 1.2 g / cm 3 and even act as a soundproofing element.
- the cabinet furniture with the existing of the profile elements front blinds a sound absorption level according to EN ISO 354 of at least 0.4.
- the sound absorption coefficient represents the ratio of the equivalent sound absorption surface of a test object to the surface of the test object.
- the surface of the test object in this case the cabinet furniture according to the invention, is the surface of the floor or the wall which is covered by it.
- the equivalent sound absorption area of the test object is determined from the difference between the equivalent sound absorption area of the reverberation room (the office room) with and without the test object (cabinet furniture).
- the equivalent sound absorption area of a room is defined as the hypothetical size of a fully absorbing surface without diffraction effects, which would give the same reverberation time in a room as if it were the only absorbing element in space.
- the proportion of sound power absorbed at a surface depends on the angle of incidence of the sound.
- the knowledge of the sound absorbing properties of the surface usually in the form of a suitable average over all Angle of incidence required.
- EN ISO 354 describes a reverberation chamber method for measuring the sound absorption coefficient of acoustic materials used in the cladding of walls and walls Ceilings are used or the equivalent sound absorption surface of individual objects, such as cabinet furniture.
- the determined sound absorption coefficient can be used for comparison purposes and for design calculations in room acoustics and especially in noise abatement.
- the cabinet furniture according to the invention it is surprisingly possible to reduce the sound in, for example, office space so that an audible reduction in the general noise level for each recognizable or audible.
- FIG. 1 an inventive cabinet is shown having a furniture body in a known manner with two side walls 2, 3, a bottom 5 and a topsoil 4.
- the front blind 1 from right to left, so horizontally movable.
- a guide groove 20 is introduced, in which the front blind 1 is movable.
- Another guide groove 20 is incorporated in the topsoil 4, but this is not visible in the illustration.
- the front blind 1 of the cabinet furniture according to the invention is formed from a plurality of interconnected profile elements 10.
- the profile elements 10 of the front blind 1 of the cabinet furniture according to the invention have on their visible side openings 40 which are regularly spaced from each other.
- Fig. 2 shows a perspective view of a not belonging to the invention embodiment of a front blind 1 of a cabinet furniture.
- the profile elements 10 of the front blind 1 have an approximately U-shaped cross section, which is formed in a defined wall thickness by the first profile body 11.
- a second profile body 8, which is connected to the profile body 11, is arranged approximately parallel to the first profile body 11.
- the profile element 10 may for example consist of a thermoplastically processable material and be prepared by extrusion or coextrusion in a known manner.
- the profile element 10 made of a metallic material, such as aluminum, or produce a thermosetting processable material.
- openings 40 are introduced, which are formed angular in this embodiment.
- the openings 40 are round, oval, polygonal or trapezoidal.
- the second profile body 8 of the profile element 10 no openings are introduced in this embodiment.
- the second profile body 8 is integrally connected to the first profile body 11.
- the sum of the total area of the openings 40 relative to the surface of the first profile body 11 of the profile element 10 in this embodiment is about 17%, which leads to optimized sound absorption effects of the cabinet furniture according to the invention.
- the profile element 10 has on its longitudinal sides via connecting means 6, 7, via the several profile elements 10, brought into operative connection, a corresponding front blind 1 result.
- the connecting means 6 is in this embodiment, a cross-sectionally approximately C-shaped opening which extends over the entire length of the profile element 10.
- the connecting element 7 is in this embodiment, an approximately circular in cross-section formed element 72, which is connected via a band-shaped element 71 with the longitudinal side of the first profile body 11 of the profile element 10.
- the band-shaped element 71 of the connecting means 7 is made in this embodiment of a softer material than the element 72, so that in the interconnected interconnected connecting means 6, 7, the profile elements 10 are hinged together in the front blind 1.
- a front blind 1 is formed.
- This front blinds 1 can be performed in a known manner in lateral guide rails 20 of cabinet furniture and are guided or wound over a example curved rail or a role in the cabinet furniture.
- the front side of the first profile body 11 of the profile element 10 faces the interior of the office space.
- the sound entering the profile element 10 via the openings 40 is reflected back on the second profile body 8 and impinges on the walls arranged between the openings 40 of the first profile body 11.
- the sound is reflected back to the first profile body 8 of the profile element 10 and thus occurs greatly attenuated from the interior of the profile element 10 back into the office space.
- cabinet furniture in, for example, offices, an improvement in the working environment can be achieved by reducing the noise level of the room itself.
- Such cabinet furniture according to the invention has a sound absorption coefficient of about 0.7.
- Fig. 3 is a perspective view of an embodiment of a front blind 1 of a cabinet furniture according to the invention shown.
- the profile element 10 of the front blind 1 is formed as a hollow profile, which is formed by a first profile body 11 and a second profile body 8 connected to it, between which a cavity is formed.
- openings 40 are introduced, which are round in this embodiment and arranged at equal intervals from each other.
- the distance of the openings 40 is greater than the extent of the opening 40 in the longitudinal direction of the first profile body 11.
- the second profile body 8 is arranged approximately semicircular in this embodiment and has openings 40 which are formed angular.
- the sum of the total area of the openings 40 with respect to the surface of the first profile body 11 of the profile element 10 in this embodiment is about 15%, which leads to optimized sound absorption effects of the cabinet furniture according to the invention.
- the profile element 10 has on its longitudinal sides via connecting means 6, 7, via the several profile elements 10, brought into operative connection, a corresponding front blind 1 result.
- the front blind 1 formed from the profile elements 10 is guided in a known manner, for example in vertical guide rails 20 of cabinet furniture.
- the front side 2 of the first profile body 11 of the profile element 10 faces the interior.
- the sound from the interior now passes through the openings 40 of the first profile body 11 of the profile element 10 in the cavity between the first profile body 11 and the second profile body 8.
- the sound is reflected back to the wall of the first profile body 11, which between the openings 40 is arranged.
- the sound is next guided through the openings 40 of the second profile body 8 in the interior of the cabinet furniture and further absorbed by the stored therein objects, but also by the furniture body itself, and reflected back.
- Fig. 4 is a perspective view of an also not belonging to invention embodiment of a front blind 1 of a cupboard cabinet.
- the same elements with the same reference numerals as in the preceding figures will not be described again in part again.
- openings 40 are introduced, the distance in the longitudinal direction of the first profile body 11 is approximately equal to the extent of the openings 40 in the cross section of the profile body 11 of the profile element 10 seen are.
- These introduced in the form of elongated holes openings 40 are arranged on the edge sides of the profile body 11 of the profile element 10.
- the approximately parallel to the first profile body 11 arranged second profile body 8 of the profile element 10 also has openings 40, which are formed in this embodiment round.
- the distance of the openings 40 of the second profile body 8 is greater than the dimensions of the openings 40 in the longitudinal direction of the second profile body 8.
- a soundproofing element 5 is arranged at the first profile body 11 of the profile element 10 opposite side of the second profile body.
- the sound-absorbing material of the soundproofing element 5 is in this embodiment, a nonwoven material which is arranged over the entire length of the second profile body 8 over this entire surface.
- the sum of the total area of the openings 40 relative to the surface of the first profile body 11 of the profile element 10 in this embodiment is about 25%, which leads to very good sound absorption effects of the cabinet furniture according to the invention.
- a front blind 1 is formed.
- the front side 2 of the profile body 11 of the profile element 10 faces the interior.
- the sound from the interior now passes through the openings 40 of the first profile body 11 in the cavity between the first profile body 11 and the second profile body 8 of the profile element 10.
- the sound is partially absorbed and passes through the openings 40 of the second profile body 8 to the sound-absorbing material of the soundproofing element 5.
- this sound is at least partially absorbed.
- the soundproofing element is arranged, for example, that between the first profile body 8 of the profile element 10 and the soundproofing element an air gap is formed, through which the sound propagates along the soundproofing element 5 and also between the openings 40 of Profile body 8 of the profile element 10 is absorbed.
- the now entering the cabinet furniture residual sound is further absorbed and reflected by the stored therein objects and by the furniture body itself and strongly attenuated coming from the interior of the cabinet furniture coming back to the soundproofing element 5.
- the sound is further absorbed or from the second profile body 8 of the profile element 10 arranged behind the soundproofing element 5 is reflected back into the interior of the cabinet.
- a very small proportion of the sound entering the cabinet now passes through the openings 40 of the second profile body and the openings 40 of the first profile body 11 of the profile element 10 in very small amounts back into the surrounding office space.
- a reduction of the noise level can be achieved by the use of cabinet furniture according to the invention, such cabinet furniture according to the invention having a sound absorption coefficient of about 0.82.
- Fig. 5 shows a perspective view of another non-inventive embodiment of a front blind 1 a cupboard furniture.
- the first profile body 11 of the profile element 10 of the front blind 1 has an approximately U-shaped cross section with a constant wall thickness over the entire profile length.
- openings 40 are introduced, which are formed approximately square in this embodiment.
- the sum of the total area of the openings 40 with respect to the surface of the first profile body 11 of the profile element 10 in this embodiment is about 15%.
- Spaced apart from the first profile body 11 of the profile element 10 is the second profile body 8.
- the second profile body 8 is formed of a foamed material having a density of about 0.6 kg / m 3 and thus acts even as a soundproofing element 5.
- the second Profile body 8 has approximately a threefold greater wall thickness than the first profile body 11 of the profile element 10. This design of the second profile body 8 of the profile element 10, on the one hand, achieves dimensional stabilization of the profile element 10, while, on the other hand, the second profile body 8 acts as a soundproofing element 5.
- a profile body 8 made of a foamed material which is advantageously formed open-pore, the penetrating through the openings 40 of the first profile body 11 sound from offices on trained as a soundproofing element 5 second profile body 8 is absorbed and forwarded in small quantities in the cabinet interior.
- the sound absorbed in the interior of the cabinet is not absorbed by the objects stored therein and the furniture carcass and is strongly attenuated coming from inside the cabinet furniture onto the underside of the second profile body 8 designed as soundproofing element 5 and is at least partially reflected back into the interior of the cabinet unit.
- a very small reduced part of the sound now passes back into the interior via the open-pore geometry of the second profile body 8 designed as a soundproofing element 5 and the openings 40 of the first profile body 11, but this proportion is very negligible.
- a sound absorption coefficient of about 0.65 a reduction of the noise level can be achieved in, for example, office space, resulting in an overall better and more optimal working environment.
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Building Environments (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
- Grates (AREA)
- Special Wing (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Blinds (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Schallreduzierung in Büroräumen unter Verwendung eines Schrankmöbels mit einem Möbelkorpus und wenigstens einer Frontjalousie, die aus parallel zueinander angeordneten, miteinander verbundenen Profilelementen besteht und in am Möbelkorpus angeordneten Führungsnuten geführt ist.The invention relates to a method for noise reduction in offices using a cabinet furniture with a furniture body and at least one front blind, which consists of mutually parallel, interconnected profile elements and is guided in arranged on the furniture body guide grooves.
Derartige Schrankmöbel sind aus dem Stand der Technik bereits bekannt. Es werden Schrankmöbel beschrieben, bei denen Profilelemente zum Bilden eines Rollladens mit jeweils benachbarten Profilelementen gelenkig verbindbar sind und die zum Öffnen bzw. zum Verschließen dieser Schrankmöbel vorgesehen sind. Die aus verschiedenartigen Profilelementen bestehenden in Schrankmöbeln angeordneten Rollladen bzw. Frontjalousien verursachen beim Öffnen und Verschließen materialbedingt selber Geräusche. Nachteilig bei diesen Schrankmöbeln aus dem Stand der Technik wird gesehen, dass insbesondere bei der Verwendung in beispielsweise Großraumbüros mit einem an sich hohen Geräuschpegel der Einsatz dieser Schrankmöbel dazu führt, den den Geräuschpegel verursachenden Schall weiter zu verteilen, da dieser an der Oberfläche der Schrankmöbel und insbesondere der Frontjalousien zurückreflektiert wird. Die dabei entstehende Geräuschkulisse, insbesondere in größeren Büroräumen, ist nicht förderlich für das Verständigungs- und Arbeitsklima der dort tätigen Mitarbeiter.Such cabinet furniture are already known from the prior art. There are described cabinet furniture in which profile elements for forming a shutter with each adjacent profile elements are pivotally connected and which are provided for opening or closing this cabinet furniture. The arranged in various types of profile elements in cabinet furniture shutters or front blinds cause when opening and closing due to the material itself noises. A disadvantage of these cabinet furniture from the prior art is seen that, especially when used in, for example, open-plan offices with a high level of noise, the use of this cabinet furniture to distribute the sound level causing sound, as this on the surface of the cabinet furniture and especially the front blinds is reflected back. The resulting background noise, especially in larger offices, is not conducive to the understanding and working environment of the employees working there.
So ist beispielsweise in der
Die
Die
Die Erfindung hat sich die Aufgabe gestellt, die Nachteile des bekannten Standes der Technik zu verbessern und Schrankmöbel aufzuzeigen, die wirtschaftlich und kostengünstig herstellbar sind.The object of the invention has been found to improve the disadvantages of the known prior art and show cabinet furniture that can be produced economically and inexpensively.
Erfindungsgemäß wird diese Aufgabe durch die Merkmale im Kennzeichnungsteil des Anspruches 1 gelöst. Weitere vorteilhafte Ausgestaltungen sind in den Unteransprüchen beschrieben.According to the invention, this object is achieved by the features in the characterizing part of claim 1. Further advantageous embodiments are described in the subclaims.
Erfindungsgemäß sind sowohl im ersten als auch im zweiten Profilkörper voneinander beabstandete Öffnungen eingebracht. Diese Lösung ist einfach und hat den Vorteil, dass der Schall durch die Öffnungen in den Profilkörpern des Profilelementes in das Schrankmöbel eindringen und sich dort ausbreiten kann. Der Schall wird zumindest teilweise im Schrankmöbel absorbiert. Der aus dem Schrankmöbel zurückreflektierte Schall wird nun von den Profilelementen der Frontjalousie wenigstens teilweise wieder in das Schrankmöbel zurückreflektiert, so dass nur ein sehr geringer Anteil des Schalls in den Raum zurückreflektiert wird.According to the invention, spaced-apart openings are introduced both in the first and in the second profile body. This solution is simple and has the advantage that the sound can penetrate through the openings in the profile bodies of the profile element in the cabinet furniture and spread there. The sound is at least partially absorbed in the cupboard furniture. The reflected back from the cabinet furniture sound is now at least partially reflected back from the profile elements of the front blinds in the cabinet furniture, so that only a very small proportion of the sound is reflected back into the room.
Ein weiterer Vorteil wird darin gesehen, dass der auftreffende Schall durch die Öffnungen des ersten Profilkörpers hindurchgeht und in dem durch den zweiten Profilkörper gebildeten Hohlraum sich ausbreitet bzw. an die zwischen den Öffnungen des ersten Profilkörpers existierende Wandung des Profilkörpers zurückreflektiert wird. Die Schallabsorptionswirkung wird somit im Profilelement selber erreicht, so dass ebenfalls nur geringe Anteile des eintretenden Schalls in den Raum zurückreflektiert werden.Another advantage is seen in the fact that the incident sound passes through the openings of the first profile body and propagates in the cavity formed by the second profile body or is reflected back to the existing between the openings of the first profile body wall of the profile body. The sound absorption effect is thus achieved in the profile element itself, so that also only small portions of the incoming sound are reflected back into the room.
Erfindungsgemäß beträgt im Querschnitt gesehen die Breite der Öffnungen weniger als ein Drittel der Breite der Vorderseite der Profilkörper. Bei Untersuchungen der erfindungsgemäßen Schrankmöbel hat sich herausgestellt, dass bei diesen geometrischen Vorgaben kostengünstige Schrankmöbel mit Frontjalousien herstellbar sind, die eine gute Schallabsorptionswirkung aufweisen.According to the invention, viewed in cross section, the width of the openings is less than one third of the width of the front of the profile body. In studies of the cabinet furniture according to the invention has been found that inexpensive geometric furniture with front blinds can be produced with these geometric specifications, which have a good sound absorption effect.
Weiterhin vorteilhaft hat sich herausgestellt, dass eine Größe der Fläche aller Öffnungen des Profilkörpers des Profilelementes von weniger als 45 % bzw. mehr als 3 % der Fläche der Vorderseite des Profilkörpers des Profilelementes zu dimensionsstabilen Profilelementen bzw. Frontjalousien führt, welche je nach Größe der zu erzeugenden Fläche optimierte Schallabsorptionswirkungen aufweisen.Furthermore, it has been found advantageous that a size of the surface of all openings of the profile body of the profile element of less than 45% or more than 3% of the surface of the front of the profile body of the profile element leads to dimensionally stable profile elements or front blinds, which depending on the size of have generating surface optimized sound absorption effects.
Erfindungsgemäß sind in Längsrichtung der Profilkörper mehrere voneinander beabstandete Öffnungen vorgesehen. Es hat sich dabei als vorteilhaft herausgestellt, dass die Öffnungen regelmäßig voneinander beabstandet sind, wodurch einerseits das Design der durch die Profilelemente gebildeten Frontjalousie entsprechend den Kundenwünschen gestaltet werden kann, während andererseits eine gleichzeitig optimierte Schallabsorptionswirkung vorhanden ist.According to the invention a plurality of spaced-apart openings are provided in the longitudinal direction of the profile body. It has proven to be advantageous that the openings are regularly spaced apart, whereby on the one hand the design of the front blinds formed by the profile elements can be designed according to customer requirements, while on the other hand a simultaneously optimized sound absorption effect is present.
Erfindungsgemäß ist der Abstand der Öffnungen in Längsrichtung der Profilkörper größer als die doppelte Ausdehnung der Öffnungen im Querschnitt der Profilkörper gesehen. Hierdurch sind Schrankmöbel mit durch die Profilelemente gebildeten Frontjalousien herstellbar, die bei einem ansprechenden Design optimierte Schallabsorptionswirkungen aufweisen.According to the invention, the distance of the openings in the longitudinal direction of the profile body is greater than twice the extent of the openings seen in the cross section of the profile body. As a result, cabinet furniture can be produced with formed by the profile elements front blinds, which have an attractive design optimized sound absorption effects.
Es liegt im Rahmen der Erfindung, dass der erste Profilkörper oder der zweite Profilkörper des Profilelementes aus einem offenporigen geschäumten Material mit Dichten von ca. 0,4 bis 1,2 g/cm3 bestehen und selbst als Schallschutzelement wirken.It is within the scope of the invention that the first profile body or the second profile body of the profile element consist of an open-celled foamed material with densities of about 0.4 to 1.2 g / cm 3 and even act as a soundproofing element.
Erfindungsgemäß weist das Schrankmöbel mit der aus den Profilelementen bestehenden Frontjalousie einen Schallabsorptionsgrad gemäß EN ISO 354 von wenigstens 0,4 auf. Der Schallabsorptionsgrad stellt dabei das Verhältnis von äquivalenter Schallabsorptionsfläche eines Prüfobjektes zur Fläche des Prüfobjektes dar. Die Fläche des Prüfobjektes, in diesem Fall des erfindungsgemäßen Schrankmöbels, ist die Fläche des Bodens oder der Wand, die von ihm überdeckt wird. Die äquivalente Schallabsorptionsfläche des Prüfobjektes ermittelt sich aus der Differenz zwischen der äquivalenten Schallabsorptionsfläche des Hallraumes (des Büroraumes) mit und ohne das Prüfobjekt (Schrankmöbel). Dabei wird die äquivalente Schallabsorptionsfläche eines Raumes als die hypothetische Größe einer vollständig absorbierenden Oberfläche ohne Beugungseffekte, welche die gleiche Nachhallzeit in einem Raum ergeben würde, als wenn sie das einzig absorbierende Element im Raum wäre, definiert.According to the cabinet furniture with the existing of the profile elements front blinds a sound absorption level according to EN ISO 354 of at least 0.4. The sound absorption coefficient represents the ratio of the equivalent sound absorption surface of a test object to the surface of the test object. The surface of the test object, in this case the cabinet furniture according to the invention, is the surface of the floor or the wall which is covered by it. The equivalent sound absorption area of the test object is determined from the difference between the equivalent sound absorption area of the reverberation room (the office room) with and without the test object (cabinet furniture). Here, the equivalent sound absorption area of a room is defined as the hypothetical size of a fully absorbing surface without diffraction effects, which would give the same reverberation time in a room as if it were the only absorbing element in space.
Im Allgemeinen kann festgestellt werden, dass, wenn eine Schallquelle in einem geschlossenen Raum betrieben wird, der resultierende stationäre Schalldruckpegel sowie das Abklingen des Schalldruckpegels nach Abschalten der Schallquelle durch die schallabsorbierenden Eigenschaften der Raumbegrenzungsflächen, die Luft im Raum und die Gegenstände (Schrankmöbel) im Raum beeinflusst werden. Im Allgemeinen hängt der Anteil der Schallleistung, der an einer Oberfläche absorbiert wird, vom Einfallswinkel des Schalls ab. Um die Nachhallzeit eines beispielsweise Büros, einer Werkstatt und dergleichen zu derjenigen Lärmminderung in Beziehung zu setzen, die durch eine schallabsorbierende Anordnung, wie beispielsweise ein Schrankmöbel, erzielt wird, ist die Kenntnis der schallabsorbierenden Eigenschaften der Oberfläche, üblicherweise in Form eines geeigneten Mittelwertes über alle Einfallswinkel erforderlich.In general, it can be stated that when a sound source is operated in a closed room, the resulting stationary sound pressure level and the decay of the sound pressure level after switching off the sound source by the sound-absorbing properties of the room boundary surfaces, the air in the room and the objects (cabinet furniture) in the room to be influenced. In general, the proportion of sound power absorbed at a surface depends on the angle of incidence of the sound. In order to relate the reverberation time of, for example, an office, a workshop, and the like to the noise reduction achieved by a sound absorbing arrangement, such as cabinet furniture, the knowledge of the sound absorbing properties of the surface, usually in the form of a suitable average over all Angle of incidence required.
Da die Verteilung von Schallwellen in üblichen Räumen einen großen und unvorhersagbaren Winkelbereich umfasst, wird für die Zwecke der Normung grundsätzlich eine gleichmäßige Verteilung angenommen. Wenn außerdem die Schallenergiedichte innerhalb eines Raumes ortsunabhängig ist, wird eine solche Schallverteilung ein diffuses Schallfeld genannt und man spricht bei den Schallanteilen, die auf eine Raumoberfläche treffen, von stochastischem Schalleinfalll.Since the distribution of sound waves in conventional rooms includes a large and unpredictable angular range, a uniform distribution is generally assumed for the purposes of standardization. Moreover, if the sound energy density within a room is location-independent, such a sound distribution is called a diffuse sound field and one speaks of stochastic sound incidence in the sound components that hit a room surface.
In der EN ISO 354 wird ein Hallraum-Verfahren beschrieben zur Messung des Schallabsorptionsgrades von akustischen Materialien, die zur Bekleidung von Wänden und Decken benutzt werden oder der äquivalenten Schallabsorptionsfläche von Einzelobjekten, wie beispielsweise Schrankmöbel. Der ermittelte Schallabsorptionsgrad kann zu Vergleichszwecken und für Entwurfsberechnungen in der Raumakustik und vor allem in der Lärmbekämpfung verwendet werden. Durch die erfindungsgemäßen Schrankmöbel ist es überraschend möglich, den Schall in beispielsweise Büroräumen so zu reduzieren, dass eine hörbare Senkung des allgemeinen Geräuschpegels für jeden erkennbar bzw. hörbar ist.EN ISO 354 describes a reverberation chamber method for measuring the sound absorption coefficient of acoustic materials used in the cladding of walls and walls Ceilings are used or the equivalent sound absorption surface of individual objects, such as cabinet furniture. The determined sound absorption coefficient can be used for comparison purposes and for design calculations in room acoustics and especially in noise abatement. By the cabinet furniture according to the invention, it is surprisingly possible to reduce the sound in, for example, office space so that an audible reduction in the general noise level for each recognizable or audible.
Im Folgenden soll die Wirkungs- bzw. Funktionsweise der Erfindung anhand von Ausführungsbeispielen, welche die Erfindung nicht einschränken, näher erläutert werden.In the following, the mode of action or the mode of operation of the invention will be explained in more detail on the basis of exemplary embodiments which do not restrict the invention.
Es zeigen:
- Fig. 1
- Perspektivische Darstellung eines erfindungsgemäßen Schrankmöbels
- Fig. 2
- Perspektivische Darstellung einer Frontjalousie eines nicht erfindungsgemäßen Schrankmöbels
- Fig. 3
- Perspektivische Darstellung einer Frontjalousie eines erfindungsgemäßen Schrankmöbels
- Fig. 4
- Perspektivische Darstellung einer weiteren Frontjalousie eines nicht erfindungsgemäßen Schrankmöbels
- Fig. 5
- Perspektivische Darstellung einer weiteren Frontjalousie eines nicht erfindungsgemäßen Schrankmöbels
- Fig. 1
- Perspective view of a cabinet furniture according to the invention
- Fig. 2
- Perspective view of a front blind of a cupboard furniture not according to the invention
- Fig. 3
- Perspective view of a front blind of a cabinet furniture according to the invention
- Fig. 4
- Perspective representation of another front blinds of a cupboard furniture not according to the invention
- Fig. 5
- Perspective representation of another front blinds of a cupboard furniture not according to the invention
In
Weiterhin verfügt das Profilelement 10 an seinen Längsseiten über Verbindungsmittel 6, 7, über die mehrere Profilelemente 10, in Wirkverbindung gebracht, eine entsprechende Frontjalousie 1 ergeben. Das Verbindungsmittel 6 ist in diesem Ausführungsbeispiel eine im Querschnitt etwa C-förmige Öffnung, die sich über die gesamte Länge des Profilelementes 10 erstreckt. Das Verbindungselement 7 ist in diesem Ausführungsbeispiel ein im Querschnitt etwa kreisförmig ausgebildetes Element 72, welches über ein bandförmiges Element 71 mit der Längsseite des ersten Profilkörpers 11 des Profilelementes 10 verbunden ist. Das bandförmige Element 71 des Verbindungsmittels 7 ist in diesem Ausführungsbeispiel aus einem weicheren Werkstoff hergestellt als das Element 72, so dass bei den miteinander in Wirkverbindung stehenden Verbindungsmitteln 6, 7 die Profilelemente 10 in der Frontjalousie 1 gelenkig miteinander verbindbar sind.Furthermore, the
Nachfolgend soll die Wirkungs- und Funktionsweise näher erläutert werden. Wie bereits dargestellt, wird durch Ineinanderschieben der Verbindungsmittel 6, 7 jeweils benachbarter Profilelemente 10 eine Frontjalousie 1 gebildet. Diese Frontjalousie 1 kann in bekannter Weise in seitlichen Führungsschienen 20 von Schrankmöbeln geführt werden und über eine beispielsweise Kurvenschiene oder über eine Rolle im Schrankmöbel geführt bzw. aufgewickelt werden. Beim Verschließen der Öffnung des Schrankmöbels ist die Vorderseite des ersten Profilkörpers 11 des Profilelementes 10 dem Innenraum des Büroraumes zugewandt. Der über die Öffnungen 40 nun in das Profilelement 10 eintretende Schall wird am zweiten Profilkörper 8 zurückreflektiert und trifft auf die zwischen den Öffnungen 40 des ersten Profilkörpers 11 angeordneten Wandungen. Von diesen Wandungen des ersten Profilkörpers 11 wird der Schall wieder zurückreflektiert an den ersten Profilkörper 8 des Profilelementes 10 und tritt somit stark abgeschwächt aus dem Inneren des Profilelementes 10 zurück in den Büroraum. Somit kann durch den Einsatz von Schrankmöbeln in beispielsweise Büroräumen eine Verbesserung des Arbeitsklimas durch die Reduzierung des Geräuschpegels des Raumes an sich erreicht werden. Ein derart erfindungsgemäßes Schrankmöbel weist einen Schallabsorptionsgrad von etwa 0,7 auf.Below, the mode of action and operation will be explained in more detail. As already shown, by telescoping the connecting
In
Nachfolgend soll die Wirkungs- und Funktionsweise der Erfindung näher erläutert werden.The operation and operation of the invention will be explained in more detail below.
Die aus den Profilelementen 10 gebildete Frontjalousie 1 wird in bekannter Weise beispielsweise in vertikalen Führungsschienen 20 von Schrankmöbeln geführt. Beim Verschließen der Öffnung des Schrankmöbels ist die Vorderseite 2 des ersten Profilkörpers 11 des Profilelementes 10 dem Innenraum zugewandt. Der Schall aus dem Innenraum gelangt nun über die Öffnungen 40 des ersten Profilkörpers 11 des Profilelementes 10 in den Hohlraum zwischen dem ersten Profilkörper 11 und den zweiten Profilkörper 8. Am zweiten Profilkörper 8 wird der Schall zurückreflektiert an die Wandung des ersten Profilkörpers 11, welche zwischen den Öffnungen 40 angeordnet ist. Der Schall wird als nächstes über die Öffnungen 40 des zweiten Profilkörpers 8 in das Innere des Schrankmöbels geführt und durch die darin gelagerten Gegenstände, aber auch durch den Möbelkorpus selber, weiter absorbiert und zurückreflektiert. Der abgeschwächte Schall trifft nun auf die Wandung des zweiten Profilkörpers 8, wird wieder in das Schrankmöbel zurückreflektiert, während ein geringer Anteil des Schalls über die Öffnungen 40 des zweiten Profilkörpers und die Öffnungen 40 des ersten Profilkörpers 11 in den Innenraum zurücktritt. Somit kann vorteilhafterweise eine schallabsorbierende Wirkung des erfindungsgemäßen Schrankmöbels erreicht werden ohne die zusätzliche Verwendung eines schallabsorbierenden Materials, welches diese Schallabsorptionswirkung noch weiter erhöht.The front blind 1 formed from the
In
Die Summe der Gesamtfläche der Öffnungen 40 gegenüber der Fläche des ersten Profilkörpers 11 des Profilelementes 10 beträgt in diesem Ausführungsbeispiel etwa 25 %, was zu sehr guten Schallabsorptionswirkungen des erfindungsgemäßen Schrankmöbels führt.The sum of the total area of the
Durch Ineinanderschieben und somit in Wirkverbindung bringende Verbindungsmittel 6, 7 der Profilelemente 10 wird eine Frontjalousie 1 gebildet. Beim Verschließen der Öffnung eines Schrankmöbels ist die Vorderseite 2 der Profilkörper 11 des Profilelementes 10 dem Innenraum zugewandt. Der Schall aus dem Innenraum gelangt nun über die Öffnungen 40 des ersten Profilkörpers 11 in den Hohlraum zwischen dem ersten Profilkörper 11 und dem zweiten Profilkörper 8 des Profilelementes 10. An den sich gegenüberliegenden Wänden ohne Öffnungen 40 des ersten Profilkörpers 11 und des zweiten Profilkörpers 8 wird der Schall teilweise absorbiert und gelangt über die Öffnungen 40 des zweiten Profilkörpers 8 zum schallabsorbierenden Material des Schallschutzelementes 5. Am Schallschutzelement 5 wird dieser Schall zumindest teilweise absorbiert.By telescoping and thus bringing into operative connection means 6, 7 of the
Es liegt jedoch auch im Rahmen der Erfindung, dass das Schallschutzelement beispielsweise so angeordnet ist, dass zwischen dem ersten Profilkörper 8 des Profilelementes 10 und dem Schallschutzelement ein Luftspalt entsteht, über den sich der Schall am Schallschutzelement 5 entlang ausbreitet und auch zwischen den Öffnungen 40 des Profilkörpers 8 des Profilelementes 10 absorbiert wird. Der nun in das Schrankmöbel eintretende Restanteil Schall wird durch die darin gelagerten Gegenstände und durch den Möbelkorpus selber weiter absorbiert und reflektiert und trifft stark abgeschwächt aus dem Inneren des Schrankmöbels kommend wieder auf das Schallschutzelement 5. Im Schallschutzelement 5 wird der Schall weiter absorbiert bzw. von dem hinter dem Schallschutzelement 5 angeordneten zweiten Profilkörper 8 des Profilelementes 10 in das Schrankinnere zurückreflektiert.However, it is also within the scope of the invention that the soundproofing element is arranged, for example, that between the
Ein sehr geringer Anteil des in den Schrank eindringenden Schalls gelangt nun über die Öffnungen 40 des zweiten Profilkörpers und die Öffnungen 40 des ersten Profilkörpers 11 des Profilelementes 10 in sehr geringfügigen Mengen zurück in den umliegenden Büroraum. Somit kann durch den Einsatz derart erfindungsgemäßer Schrankmöbel eine Reduzierung des Geräuschpegels erreicht werden, wobei derart erfindungsgemäße Schrankmöbel einen Schallabsorptionsgrad von etwa 0,82 aufweisen.A very small proportion of the sound entering the cabinet now passes through the
Claims (4)
- Method for noise reduction in an office space by use of
a cupboard with a furniture body (2, 3, 4, 5) and at least a front shutter (1), which is composed of profile elements (10) arranged parallel to one another and connected to one another, and is guided in guide grooves (20) arranged on the furniture body (2, 3, 4, 5),- wherein the profile elements (10) formed as hollow profile with a cavity comprise a first profile body (11) and a second profile body (8), which are arranged spaced from one another, and between which the cavity is formed,- wherein the first profile body (11) and the second profile body (8) are integrally connected with one another,- wherein, in both profile bodies (8, 11), openings (40) spaced from one another are introduced,- wherein each profile element (10) has connecting means (6, 7) on its longitudinal sides (6, 7), through which the profile elements (10) connected in an operative manner form the front shutter (1), and- wherein the one connecting element (6) is an approximately C-shaped opening in cross-section, which extends over the entire length of the profile element (10), while the other connecting material (7) is formed as a substantially circular element (72) in cross section, which is connected with the longitudinal side of the first profile body (11) through a strip-shaped element (71),characterized in that- the openings (40) introduced in the first profile body (11) are formed in a round manner,- the spacing of the openings (40) in the longitudinal direction of the profile body (8, 11) is seen as larger than double the extent of the openings (40) in the cross section of the profile bodies (8, 11),- when viewed in cross-section, the width of the openings (40) amounts to less than a third of the width of the front side (2) of the profile body (8, 11), and- the sound absorption in the cupboard as well as in the profile elements (10) of the cupboard occurs without an additional sound-absorbing material being used, which enhances the sound-absorption effect even further,- so that the cupboard comprises a sound-absorption level according to EN DIN 354 of at least 0.4. - Method according to claim characterized in that the surface area of all openings (40) of the profile body (8, 11) of the profile element (10) amounts to less than 45% and more than 3% of the surface area of the front side (2) of the profile body (8, 11) of the profile element (10).
- Method according to one of the preceding claims, characterized in that the openings (40) are regularly spaced from one another.
- Method according to one of the preceding claims, characterized in that, viewed cross-sectionally, the profile element (10) has a substantially C-, U-, Z-, or S-shaped form.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202005015290U DE202005015290U1 (en) | 2005-09-28 | 2005-09-28 | Cabinet is closed by roller shutter made up of pairs of interlocking U-profiles enclosing cavity, one or both of interlocking profiles having series of apertures in their surface which reduce noise when shutter is opened or closed |
EP06776946A EP1941121B1 (en) | 2005-09-28 | 2006-08-18 | Cabinet-type piece of furniture |
Related Parent Applications (2)
Application Number | Title | Priority Date | Filing Date |
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EP06776946.3 Division | 2006-08-18 | ||
EP06776946A Division EP1941121B1 (en) | 2005-09-28 | 2006-08-18 | Cabinet-type piece of furniture |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2336477A2 EP2336477A2 (en) | 2011-06-22 |
EP2336477A3 EP2336477A3 (en) | 2011-12-07 |
EP2336477B1 true EP2336477B1 (en) | 2018-04-04 |
Family
ID=37495865
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11002772.9A Active EP2336477B1 (en) | 2005-09-28 | 2006-08-18 | Method of noice reduction by means of a cupboard |
EP06776946A Active EP1941121B1 (en) | 2005-09-28 | 2006-08-18 | Cabinet-type piece of furniture |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06776946A Active EP1941121B1 (en) | 2005-09-28 | 2006-08-18 | Cabinet-type piece of furniture |
Country Status (10)
Country | Link |
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EP (2) | EP2336477B1 (en) |
CN (1) | CN101305153B (en) |
AT (1) | ATE542979T1 (en) |
DE (2) | DE202005015290U1 (en) |
EA (1) | EA012782B1 (en) |
ES (1) | ES2380801T3 (en) |
PL (1) | PL1941121T3 (en) |
PT (1) | PT1941121E (en) |
WO (1) | WO2007036265A1 (en) |
ZA (1) | ZA200803257B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202009014787U1 (en) | 2009-11-02 | 2011-03-17 | Rehau Ag + Co. | Profile element for shutters |
TW201404281A (en) * | 2012-07-06 | 2014-01-16 | Hon Hai Prec Ind Co Ltd | Cabinet |
FR3113074B1 (en) * | 2020-07-30 | 2022-10-28 | Plastil France | ACOUSTIC BLADE |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1128688A (en) * | 1955-07-06 | 1957-01-09 | Baumann Fils & Cie | Roller shutter with hinged plastic slats |
US5255970A (en) * | 1992-05-26 | 1993-10-26 | Theosabrata Yos S | Storage cabinet |
GB2302795A (en) * | 1995-07-06 | 1997-02-05 | Stuart John Middlehurst | Ventilated security cabinet/desk |
DE20308239U1 (en) * | 2003-05-23 | 2003-08-14 | REHAU AG + Co., 95111 Rehau | profile element |
DE20308240U1 (en) * | 2003-05-23 | 2003-08-14 | REHAU AG + Co., 95111 Rehau | profile element |
DE10343956A1 (en) | 2003-09-19 | 2005-04-28 | Ludewig Gmbh | Box furniture, esp. Kitchen furniture with front jalouise |
-
2005
- 2005-09-28 DE DE202005015290U patent/DE202005015290U1/en not_active Expired - Lifetime
-
2006
- 2006-08-18 AT AT06776946T patent/ATE542979T1/en active
- 2006-08-18 WO PCT/EP2006/008150 patent/WO2007036265A1/en active Application Filing
- 2006-08-18 EP EP11002772.9A patent/EP2336477B1/en active Active
- 2006-08-18 DE DE202006020551U patent/DE202006020551U1/en not_active Expired - Lifetime
- 2006-08-18 ES ES06776946T patent/ES2380801T3/en active Active
- 2006-08-18 EP EP06776946A patent/EP1941121B1/en active Active
- 2006-08-18 PL PL06776946T patent/PL1941121T3/en unknown
- 2006-08-18 EA EA200800941A patent/EA012782B1/en not_active IP Right Cessation
- 2006-08-18 PT PT06776946T patent/PT1941121E/en unknown
- 2006-08-18 CN CN200680041498XA patent/CN101305153B/en not_active Expired - Fee Related
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Publication number | Publication date |
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PT1941121E (en) | 2012-04-23 |
DE202006020551U1 (en) | 2008-11-20 |
CN101305153A (en) | 2008-11-12 |
EP2336477A2 (en) | 2011-06-22 |
EP1941121A1 (en) | 2008-07-09 |
EA200800941A1 (en) | 2008-10-30 |
ES2380801T3 (en) | 2012-05-18 |
CN101305153B (en) | 2013-03-27 |
EP2336477A3 (en) | 2011-12-07 |
ATE542979T1 (en) | 2012-02-15 |
DE202005015290U1 (en) | 2006-12-14 |
EA012782B1 (en) | 2009-12-30 |
ZA200803257B (en) | 2009-02-25 |
WO2007036265A1 (en) | 2007-04-05 |
PL1941121T3 (en) | 2012-07-31 |
EP1941121B1 (en) | 2012-01-25 |
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