EP2754967B1 - Extractor hood - Google Patents
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- EP2754967B1 EP2754967B1 EP13401137.8A EP13401137A EP2754967B1 EP 2754967 B1 EP2754967 B1 EP 2754967B1 EP 13401137 A EP13401137 A EP 13401137A EP 2754967 B1 EP2754967 B1 EP 2754967B1
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- European Patent Office
- Prior art keywords
- sound
- layer
- extractor hood
- layers
- inhibiting means
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- 239000012528 membrane Substances 0.000 claims description 23
- 239000011148 porous material Substances 0.000 claims description 21
- 239000002184 metal Substances 0.000 claims description 14
- 239000002657 fibrous material Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 5
- 229920005832 Basotect® Polymers 0.000 claims description 4
- 239000011490 mineral wool Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 229920000877 Melamine resin Polymers 0.000 claims description 2
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims description 2
- 230000002401 inhibitory effect Effects 0.000 claims 17
- 239000006261 foam material Substances 0.000 claims 3
- 238000013016 damping Methods 0.000 claims 2
- 239000004519 grease Substances 0.000 claims 1
- 230000005764 inhibitory process Effects 0.000 claims 1
- 239000010410 layer Substances 0.000 description 69
- 230000004888 barrier function Effects 0.000 description 30
- 239000006260 foam Substances 0.000 description 8
- 238000010276 construction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000005871 repellent Substances 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 238000010097 foam moulding Methods 0.000 description 1
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Ventilation (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
Die Erfindung betrifft eine Dunstabzugshaube gemäß dem Oberbegriff des Anspruchs 1, umfassend ein Gehäuse mit einem Ansaugbereich für Wrasen und einer in dem Gehäuse angeordneten Gebläseeinheit deren Saugseite mit dem Ansaugbereich strömungstechnisch in Verbindung steht, wobei die Gebläseeinheit zumindest teilweise mit einer Schallbehinderungseinrichtung umgeben ist, welche zur Behinderung der Ausbreitung der Betriebsgeräusche der Gebläseeinheit zumindest eine ein Lochblech aufweisende Schicht und eine ein poröses Material aufweisende Schicht umfasst.The invention relates to an extractor hood according to the preamble of claim 1, comprising a housing with a suction area for vapors and a blower unit arranged in the housing, the suction side of which is fluidly connected to the suction area, the blower unit being at least partially surrounded by a noise-reducing device which is used for Impeding the propagation of the operating noise of the blower unit comprises at least one layer having a perforated plate and a layer having a porous material.
Aus dem Stand der Technik ist beispielsweise gemäß der
Bei all diesen aus dem Stand der Technik bekannten Schallbehinderungseinrichtungen wird es als nachteilig angesehen, dass im Wesentlichen erst bei einer Dicke der Schallbehinderungseinrichtung, die etwa ¼ der Wellenlänge insbesondere der problematischen Frequenzen des Schalls entsprecht, eine erfolgreiche Schallbehinderung erreicht wird. Besonders bei tiefen Frequenzen werden daher sehr dicke Schallbehinderungseinrichtungen, insbesondere Schallabsorber, benötigt. Zum Beispiel für die Frequenz 1.000 Hz ergibt sich so eine optimale Dicke von 80 mm. In den meisten Fällen lässt der Bauraum zum Beispiel bei Dunstabzugshauben jedoch nur eine Dicke der Schallbehinderungseinrichtung von 10 bis 40 mm zu.In all of these noise-barrier devices known from the prior art, it is considered disadvantageous that a successful noise barrier is only achieved at a thickness of the noise-barrier device that corresponds to approximately ¼ of the wavelength, in particular of the problematic frequencies of the noise. Especially at low frequencies, very thick noise-reducing devices, in particular sound absorbers, are therefore required. For example, for the frequency 1,000 Hz, this results in an optimal thickness of 80 mm. In most cases, however, the space available, for example, for extractor hoods, only allows the thickness of the noise barrier device to be 10 to 40 mm.
Der Erfindung stellt sich somit das Problem eine Dunstabzugshaube und hier insbesondere eine Schallbehinderungseinrichtung für eine Dunstabzugshaube derart weiterzubilden, welche die geschilderten Nachteile überwindet, wobei die Schallbehinderungseinrichtung insbesondere in der Lage sein soll, eine breitbandige Schallbehinderung bereitzustellen.The invention thus presents the problem of developing an extractor hood, and here in particular a noise-reducing device for an extractor hood, which overcomes the disadvantages described, wherein the noise barrier device should in particular be able to provide a broadband noise barrier.
Erfindungsgemäß wird dieses Problem mit einer Dunstabzugshaube mit den Merkmalen des Anspruchs 1 gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den nachfolgenden Unteransprüchen.According to the invention, this problem is solved with an extractor hood with the features of claim 1. Advantageous refinements and developments of the invention result from the following subclaims.
Demnach zeichnet sich eine erfindungsgemäße Dunstabzugshaube dadurch aus, dass bei der Schallbehinderungseinrichtung eine ein faseriges Material aufweisende Schicht vorgesehen ist, welche relativ zu der Gebläseeinheit vor der das poröse Material aufweisenden Schicht angeordnet ist, wobei das faserige Material den Durchtritt von Schall ermöglicht und den Durchtritt von Fett und Feuchtigkeit zumindest behindert. Vorteilhaft ist dabei, dass der Schall durch die das faserige Material aufweisende Schicht durchtreten und somit in die weiteren Schichten der Schallbehinderungseinrichtung besser eindringen kann, als es beim bisher bekannten Stand der Technik möglich ist, wo als Schutz gegen Fett und Feuchtigkeit eine folienartige Schicht zum Einsatz kommt. Das faserige Material kann zum Beispiel ein Vlies oder Ähnliches sein.Accordingly, an extractor hood according to the invention is characterized in that a layer comprising a fibrous material is provided in the sound-blocking device, which is arranged relative to the blower unit in front of the layer comprising the porous material, the fibrous material permitting the passage of sound and the passage of Fat and moisture at least hampered. It is advantageous here that the sound can pass through the layer containing the fibrous material and thus penetrate into the further layers of the sound barrier device better than is possible in the previously known prior art, where a film-like layer is used as protection against fat and moisture is coming. The fibrous material can be, for example, a nonwoven or the like.
Die erfindungsgemäße Dunstabzugshaube zeichnet sich weiterhin dadurch aus, dass der Gebläseeinheit eine Rahmengestelleinheit zugeordnet ist, wobei die Schallbehinderungseinrichtung wenigstens eine kassettenartige Schallbehinderungseinheit umfasst und wobei die kassettenartige Schallbehinderungseinheit in die Rahmengestelleinheit entnehmbar einsetzbar ist. Vorteilhaft an der kassettenartigen Bauweise ist die einfache Austauschbarkeit der einzelnen Schallbehinderungseinheiten. Auch ist es denkbar eine Dunstabzugshaube zunächst ohne eine Schallbehinderungseinrichtung aber mit vorhandener Rahmengestelleinheit im Bereich der Gebläseeinheit und zusätzlich separat die kassettenartigen Schallbehinderungseinheiten anzubieten, so dass ein Kunde die Schallbehinderungseinrichtung zu einem späteren Zeitpunkt bei Bedarf nachrüsten kann. Nach einer vorteilhaften Ausgestaltung wird vorgeschlagen, dass die Schallbehinderungseinrichtung sandwichartig aufgebaut ist und wenigstens eine weitere Schicht umfasst. Vorteilhafter Weise behindert die Schallbehinderungseinrichtung Schallwellen mit tiefen Frequenzen insbesondere im Bereich > 1.200 Hz und/oder Schallwellen mit hohen Frequenzen insbesondere im Bereich < 1.200 Hz und insbesondere ist die Schallbehinderungseinrichtung zur breitbandigen Schallbehinderung ausgebildet. Erreichbar ist diese vorteilhafte Wirkung durch den mehrschichtigen insbesondere sandwichartigen Aufbau der Schallbehinderungseinrichtung und insbesondere durch die Beschaffenheit und die Reihenfolge der einzelnen Schichten, welche je nach zu behindernden Schallfrequenzen anwendungsspezifisch auszuwählen sind.The extractor hood according to the invention is further distinguished by the fact that the blower unit is assigned a frame frame unit, the sound-blocking device comprising at least one cassette-like sound-blocking unit and the cassette-like sound-blocking unit being removably insertable into the frame frame unit. An advantage of the cassette-like construction is the simple interchangeability of the individual noise-reducing units. It is also conceivable to initially offer an extractor hood without a noise barrier device but with an existing frame unit in the area of the blower unit and additionally separately the cassette-like noise barrier units, so that a customer can retrofit the noise barrier device at a later time if necessary. According to an advantageous embodiment, it is proposed that the sound barrier device be constructed in a sandwich-like manner and comprise at least one further layer. Advantageously, the sound obstruction device impedes sound waves with low frequencies, in particular in the range> 1,200 Hz and / or sound waves with high frequencies, in particular in the range <1,200 Hz, and in particular the sound obstruction device is designed for broadband sound obstruction. This advantageous effect can be achieved through the multi-layered, in particular sandwich-like structure of the noise barrier device and in particular through the nature and the Sequence of the individual layers, which are to be selected depending on the application depending on the sound frequencies to be impeded.
Bevorzugt umfasst die Schallbehinderungseinrichtung als weitere Schicht eine schallharte Wand, insbesondere eine aus Vollblech gebildete Wand. Besonders bevorzugt umfasst die Schallbehinderungseinrichtung als weitere Schicht eine gespannte elastische Membran, insbesondere eine aus Folie, Gummi oder dünnem Blech gebildete elastische Membran, wobei die Membran an einem Rahmen oder an einer vorhergehenden oder nachfolgenden Schicht porösen Materials oder einer ein Lochblech aufweisenden Schicht angebracht und insbesondere angeklebt ist. Besonders bevorzugt umfasst die Schallbehinderungseinrichtung als weitere Schicht eine Luftschicht, welche insbesondere zwischen der eine elastischen Membran aufweisenden Schicht und der benachbarten Schicht angeordnet ist, welche ein Lochblech oder eine schallharte Wand aufweist, wobei die Luftschicht insbesondere eine Dicke von 1/6 der Gesamtdicke aller Schichten der Schallbehinderung besitzt.As a further layer, the sound barrier device preferably comprises a soundproof wall, in particular a wall formed from solid sheet metal. Particularly preferably, the sound barrier device comprises, as a further layer, a tensioned elastic membrane, in particular an elastic membrane formed from film, rubber or thin sheet metal, the membrane being attached to a frame or to a preceding or subsequent layer of porous material or a layer having a perforated sheet, and in particular is glued. Particularly preferably, the sound barrier device comprises an air layer as a further layer, which is arranged in particular between the layer having an elastic membrane and the adjacent layer, which has a perforated plate or a soundproof wall, the air layer in particular having a thickness of 1/6 of the total thickness of all layers who has sound impairment.
Nach einer besonders vorteilhaften Ausgestaltung umfasst die Schallbehinderungseinrichtung zumindest eine Schicht, welche den Schall wenigstens teilweise dämpft und/oder absorbiert und zumindest eine Schicht, welche den Schall wenigstens teilweise reflektiert, wobei eine ein poröses Material oder eine elastische Membran aufweisende Schicht eine schalldämpfende bzw. schallabsorbierende Wirkung besitzt und eine ein Lochblech oder eine schallharte Wand aufweisende Schicht mit einer schallreflektierenden Wirkung besitzt. In bevorzugter Weiterbildung ist zwischen einer den Schall wenigstens teilweise reflektierende Schicht und einer weiteren den Schall wenigstens teilweise reflektierenden Schicht wenigstens eine den Schall wenigstens teilweise dämpfende oder absorbierende Schicht angeordnet.According to a particularly advantageous embodiment, the sound-blocking device comprises at least one layer which at least partially dampens and / or absorbs the sound and at least one layer which at least partially reflects the sound, a layer comprising a porous material or an elastic membrane being a sound-absorbing or sound-absorbing layer Has an effect and has a layer having a perforated plate or a reverberant wall with a sound-reflecting effect. In a preferred development, at least one layer that at least partially dampens or absorbs the sound is arranged between a layer that at least partially reflects the sound and a further layer that at least partially reflects the sound.
Nach einer zweckmäßigen Ausgestaltung ist das poröse Material ein Schaumstoff, insbesondere Basotect-Schaumstoff oder Melamin-Schaumstoff, oder Steinwolle. Die erwähnte schallharte Wand ist bevorzugt von einer Wand des Gehäuses der Dunstabzugshaube gebildet.According to an expedient embodiment, the porous material is a foam, in particular Basotect foam or melamine foam, or rock wool. The aforementioned hard wall is preferably formed by a wall of the housing of the extractor hood.
Nach einer besonders vorteilhaften Ausgestaltung der Schallbehinderungseinrichtung umfasst diese wenigstens zwei ein Lochblech aufweisende Schichten, wobei bei der von diesen wenigstens zwei Schichten relativ zur Gebläseeinheit näher liegenden Schicht die freie Fläche der Lochung des Lochblechs insbesondere mindestens 60% der Gesamtfläche des Lochblechs beträgt und größer ist als die freie Fläche der Lochung des Lochblechs der wenigstens einer weiteren Schicht dieser wenigstens zwei Schichten, bei der die freie Fläche der Lochungen insbesondere mindestens 40% der Gesamtfläche des Lochblechs beträgt.According to a particularly advantageous embodiment of the noise barrier device, it comprises at least two layers having a perforated plate, the free area of the perforation of the perforated plate being, in particular, at least 60% of the total area of the perforated plate and greater than that of the layer closer to the blower unit the free area of the perforation of the perforated sheet of the at least one further layer of these at least two layers, in which the free area of the perforations is in particular at least 40% of the total area of the perforated sheet.
Bevorzugt umfasst die Schallbehinderungseinrichtung wenigstens zwei ein poröses Material aufweisende Schichten, wobei die von diesem wenigstens zwei Schichten relativ zur Gebläseeinheit näher liegende Schicht ein Material mit größerem Porendurchmesser bzw. geringere Dichte aufweist als das poröse Material der wenigstens einer weiteren Schicht dieser wenigstens zwei Schichten. Dabei ist vorteilhafter Weise ein relativ großporiges poröses Material zur Absorbtion tiefer Frequenzen und ein relativ kleinporiges Material zur Absorbtion hoher Frequenzen geeignet und vorgesehen.Preferably, the sound barrier device comprises at least two layers having a porous material, the layer closer to the blower unit relative to the blower unit having a material with a larger pore diameter or lower density than the porous material of the at least one further layer of these at least two layers. A relatively large-pored porous material for absorbing low frequencies and a relatively small-pored material for absorbing high frequencies are advantageously suitable and provided.
In bevorzugter Ausbildung der Schallbehinderungseinrichtung umfasst diese wenigstens zwei eine elastische Membran aufweisende Schichten, wobei bei der von diesen wenigstens zwei Schichten relativ zur Gebläseeinheit näher liegenden Schicht die elastische Membran dünner ist als die elastische Membran der wenigstens einen weiteren Schicht der wenigstens zwei Schichten. Dabei ist vorteilhafter Weise eine relativ dünne Membran zur Absorbtion tiefer Frequenzen und eine relativ dicke Membran zur Absorbtion hoher Frequenzen geeignet und vorgesehen.In a preferred embodiment of the sound barrier device, it comprises at least two layers having an elastic membrane, the elastic membrane being thinner than the elastic membrane of the at least one further layer of the at least two layers in the layer closer to the blower unit of these at least two layers. Here, a relatively thin membrane for absorbing low frequencies and a relatively thick membrane for absorbing high frequencies are advantageously suitable and provided.
Je nach Ausführungsform bestehen die mit der Erfindung erreichbaren Vorteile insbesondere darin, dass Geräusche auch in tieferen Frequenzen schon bei relativ dünnem Aufbau deutlich reduziert werden, was auf den mehrschichtigen insbesondere sandwichartigen Aufbau zurückzuführen ist. Die Schallbehinderungseinrichtung wird bevorzugt in einer Schichtenkombination aus Schichten mit porösem Material in der Regel Steinwolle, Schaumstoff und Schichten mit Membran bzw. Plattenschwinger aufgebaut. Die Membran bzw. der Plattenschwinger entnimmt dem Schall die Schwingungsenergie besonders in tieferen Frequenzen. Durch einen bevorzugten Einsatz mehrerer paralleler Lochbleche entstehen Kammern, die das Prinzip der Schallreflektion nutzen. Der Schall durchläuft mehrfach die Innenräume, dabei kommt es zu einer Mittelung der Schalldruckamplituden, was eine Reduzierung der Schalldruckspitzen zur Folge hat. Besonders bevorzugt wird als Aufbau für eine breitbandige Schallbehinderungseinrichtung folgende Schichtfolge, beginnend mit der in Bezug zur Gebläseeinheit nächstliegenden Schicht, bereitgestellt: Die erste Schicht umfasst ein Lochblech dessen freie Fläche mindestens 60% der gesamten Fläche des Lochbleches beträgt. Die Lochung ist dabei weitgehend gleichmäßig verteilt. Das Einzelloch sollte hierbei eine Fläche von maximal ca. 0,005% der gesamten Fläche des Lochbleches haben. Die zweite Schicht verfügt hierbei über ein Vlies als faseriges Material, welches zwar eine geräuschdurchlässige jedoch feuchtigkeits- und fettabweisend Eigenschaft hat und somit insbesondere als Dampf- und Fettsperre fungiert. Als dritte Schicht wird ein poröses Material vorwiegend bestehend aus Steinwolle oder Schaumstoff zum Beispiel Basotect-Schaumstoff verwendet. Die vierte Schicht umfasst wiederum ein Lochblech, dessen freie Fläche mindestens 40% der gesamten Fläche des Lochbleches beträgt. Die Lochung ist gleichmäßig verteilt, das Einzelloch soll hierbei eine Fläche von maximal ca. 0,0025% der gesamten Fläche des Lochbleches haben. Bei der fünften Schicht handelt es sich um eine dünne elastische Membran (Plattenschwinger), die auf der vierten Schicht aufgespannt ist. Die sechste Schicht wird hier als eine Luftschicht mit einer Dicke von ca. 1/6 der gesamten Dicke der Schallbehinderungseinrichtung vorgehalten. Als letztes wird eine siebte Schicht vorgesehen, welche als Abschlussschicht eine schallharte Wand wie zum Beispiel ein Vollblech sein kann.Depending on the embodiment, the advantages that can be achieved with the invention are, in particular, that noise, even at lower frequencies, is significantly reduced even with a relatively thin structure, which can be attributed to the multilayer, in particular sandwich-like structure. The sound barrier device is preferably constructed in a layer combination of layers with porous material, as a rule rock wool, foam and layers with a membrane or plate vibrator. The membrane or the plate vibrator takes the vibrational energy from the sound, especially at lower frequencies. A preferred use of several parallel perforated plates creates chambers that use the principle of sound reflection. The sound passes through the interior several times, which results in the sound pressure amplitudes being averaged, which results in a reduction in the sound pressure peaks. Particularly preferably, the following layer sequence, starting with the layer closest to the blower unit, is provided as a structure for a broadband sound barrier device: the first layer comprises a perforated plate whose free area is at least 60% of the total area of the perforated plate. The perforation is largely evenly distributed. The single hole should have a maximum area of approx. 0.005% of the total area of the perforated plate. The second layer has a fleece as a fibrous material, which has a sound-permeable but moisture and fat-repellent property and is therefore particularly suitable as a steam and fat lock acts. A porous material consisting mainly of rock wool or foam, for example Basotect foam, is used as the third layer. The fourth layer in turn comprises a perforated plate, the free area of which is at least 40% of the total area of the perforated plate. The perforation is evenly distributed, the single hole should have a maximum area of approx. 0.0025% of the total area of the perforated plate. The fifth layer is a thin elastic membrane (plate vibrator) that is stretched over the fourth layer. The sixth layer is kept here as an air layer with a thickness of approx. 1/6 of the total thickness of the sound barrier device. Finally, a seventh layer is provided, which can be a reverberant wall, such as a solid sheet, as a finishing layer.
Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen rein schematisch dargestellt und wird nachfolgend näher beschrieben. Es zeigt:
- Figur 1
- eine perspektivische Ansicht einer Gebläseeinheit für eine Dunstabzugshaube, welche von einer Schallbehinderungseinrichtung mit mehreren Schallbehinderungseinheiten umgeben ist;
Figur 2- eine Detailansicht der Schallbehinderungseinrichtung bzw. Schallbehinderungseinheit im Aufbau ihrer Schichten;
Figur 3- eine Rückansicht einer Schallbehinderungseinheit;
Figur 4- eine Vorderansicht einer Schallbehinderungseinrichtung und
Figur 5- eine perspektivische Ansicht einer Dunstabzugshaube, insbesondere eine Inseldunstabzugshaube.
- Figure 1
- a perspective view of a blower unit for an extractor hood, which is surrounded by a noise barrier device with a plurality of noise barrier units;
- Figure 2
- a detailed view of the noise barrier device or noise barrier unit in the structure of its layers;
- Figure 3
- a rear view of a noise barrier unit;
- Figure 4
- a front view of a sound barrier device and
- Figure 5
- a perspective view of an extractor hood, in particular an island extractor hood.
Die
Wie insbesondere aus der
Nach einer vorteilhaften Ausgestaltung der Erfindung kann hierbei die schallharte Abschlusswand 8 die Kaminwand des Gehäuses 16 der Dunstabzugshaube sein.According to an advantageous embodiment of the invention, the
Wie insbesondere aus der
- 1.1.
- SchallbehinderungseinrichtungAcoustic device
- 2.2nd
- GebläseeinheitBlower unit
- 3.3rd
- Saugseite der GebläseeinheitSuction side of the blower unit
- 4.4th
- SchallbehinderungseinheitNoise barrier unit
- 5.5.
- SchallbehinderungseinheitNoise barrier unit
- 6.6.
- erstes Lochblechfirst perforated plate
- 7.7.
- zweites Lochblechsecond perforated plate
- 8.8th.
- schallharte Wand, Abschlusswandhard wall, end wall
- 11.11.
- faseriges Material, Vliesfibrous material, fleece
- 12.12th
- poröses Material, Schaumstoffporous material, foam
- 13.13.
- Membranmembrane
- 14.14.
- LuftschichtAir layer
- 15.15.
- DunstabzugshaubeExtractor hood
- 16.16.
- Gehäuse der DunstabzugshaubeExtractor hood housing
- 17.17th
- Ansaugbereich der DunstabzugshaubeIntake area of the extractor hood
- 20.20th
- RahmengestelleinheitFrame unit
Claims (13)
- Extractor hood (15) comprising a housing (16) that has a suction region (17) for steam and a fan unit (2) arranged in the housing, the suction side (3) of which fan unit is in flow connection with the suction region (17), the fan unit (2) being at least in part enclosed by a sound-inhibiting means (1), which, for the purpose of inhibiting the propagation of the operating noise of the fan unit (2), comprises at least one layer having a perforated metal sheet (6) and a layer (12) having a porous material, characterised in that a layer (11) having a fibrous material is provided in the sound-inhibiting means (1), which layer is arranged, relative to the fan unit (2), in front of the layer (12) that has the porous material, the fibrous material allowing sound to pass through while at least inhibiting the passage of grease and moisture, the sound-inhibiting means (1) comprises at least one modular sound-inhibiting unit (4, 5), and the fan unit (2) is associated with a rack unit (20), the modular sound-inhibiting unit (4, 5) being removably insertable into the rack unit (20).
- Extractor hood (15) according to any of the preceding claims, characterised in that the sound-inhibiting means (1) is sandwich-like in design and in particular comprises at least one additional layer (7, 13, 14, 8).
- Extractor hood (15) according to either of the preceding claims, characterised in that the sound-inhibiting means (1) inhibits low-frequency sound waves, in particular in the range of less than 1200 Hz, and/or high-frequency sound waves, in particular in the range of greater than 1200 Hz, and in particular is designed for broadband sound inhibition.
- Extractor hood (15) according to any of the preceding claims, characterised in that the sound-inhibiting means (1) comprises an acoustically hard wall (8) as an additional layer, in particular a wall made of solid sheet metal.
- Extractor hood (15) according to any of the preceding claims, characterised in that the sound-inhibiting means (1) comprises a tensioned, resilient membrane (13) as an additional layer, in particular a resilient membrane (13) made of film, rubber or thin sheet metal, the membrane (13) being mounted, in particular stuck, on a frame or on a preceding or following layer of porous material or a layer having a perforated metal sheet (7).
- Extractor hood (15) according to any of the preceding claims, characterised in that the sound-inhibiting means (1) comprises an air layer (14) as an additional layer, which is arranged in particular between the layer having a resilient membrane (13) and the adjacent layer which has a perforated metal sheet (7) or an acoustically hard wall (8), the air layer (14) having in particular a thickness of 1/6 of the total thickness of all the layers of the sound-inhibiting means (1).
- Extractor hood (15) according to any of the preceding claims, characterised in that the sound-inhibiting means (1) comprises at least one layer which damps and/or absorbs the sound at least in part, and at least one layer which reflects the sound at least in part, a layer that has a porous material (12) or a resilient membrane (13) having a sound-damping or sound-absorbing effect and a layer that has a perforated metal sheet (6, 7) or an acoustically hard wall (8) having a sound-reflecting effect.
- Extractor hood (15) according to the preceding claim, characterised in that at least one layer at least in part damping or absorbing the sound is arranged between a layer at least in part reflecting the sound and an additional layer at least in part reflecting the sound.
- Extractor hood (15) according to any of the preceding claims, characterised in that the porous material (12) is a foam material, in particular Basotect foam material or melamine foam material, or mineral wool.
- Extractor hood (15) according to any of the preceding claims 5 to 10, characterised in that the acoustically hard wall (8) is formed by a wall of the housing of the extractor hood.
- Extractor hood (15) according to any of the preceding claims, characterised in that the sound-inhibiting means (1) comprises at least two layers having a perforated metal sheet (6, 7), the free area of the perforations in the perforated metal sheet (6) in the layer of these at least two layers that is closer relative to the fan unit constituting in particular at least 60% of the total area of the perforated metal sheet and being larger than the free area of the perforations in the perforated metal sheet (7) of the at least one additional layer of these at least two layers, in which the free area of the perforations constitutes in particular at least 40% of the total area of the perforated metal sheet.
- Extractor hood (15) according to any of the preceding claims, characterised in that the sound-inhibiting means (1) comprises at least two layers having a porous material (12), the layer of these at least two layers (12) that is closer relative to the fan unit (2) having a material of a greater pore diameter or lower density than the porous material of the at least one additional layer of these at least two layers.
- Extractor hood (15) according to any of the preceding claims, characterised in that the sound-inhibiting means (1) comprises at least two layers having a resilient membrane (13), the resilient membrane in the layer of these at least two layers that is closer relative to the fan unit (2) being thinner than the resilient membrane of the at least one additional layer of these at least two layers.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP17181708.3A EP3260782B1 (en) | 2013-01-11 | 2013-12-16 | Extractor hood |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013100271.4A DE102013100271A1 (en) | 2013-01-11 | 2013-01-11 | Hood |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17181708.3A Division EP3260782B1 (en) | 2013-01-11 | 2013-12-16 | Extractor hood |
EP17181708.3A Division-Into EP3260782B1 (en) | 2013-01-11 | 2013-12-16 | Extractor hood |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2754967A1 EP2754967A1 (en) | 2014-07-16 |
EP2754967B1 true EP2754967B1 (en) | 2020-03-11 |
Family
ID=49917543
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17181708.3A Active EP3260782B1 (en) | 2013-01-11 | 2013-12-16 | Extractor hood |
EP13401137.8A Active EP2754967B1 (en) | 2013-01-11 | 2013-12-16 | Extractor hood |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17181708.3A Active EP3260782B1 (en) | 2013-01-11 | 2013-12-16 | Extractor hood |
Country Status (3)
Country | Link |
---|---|
EP (2) | EP3260782B1 (en) |
DE (1) | DE102013100271A1 (en) |
ES (1) | ES2781870T3 (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015100564B4 (en) * | 2015-01-15 | 2021-07-22 | Miele & Cie. Kg | Extractor hood |
DE102015101039A1 (en) * | 2015-01-26 | 2016-07-28 | Miele & Cie. Kg | Hood |
DE102015213471B4 (en) * | 2015-07-17 | 2021-11-11 | Wilhelm Bruckbauer | Fan module |
IT201600102040A1 (en) * | 2016-10-11 | 2018-04-11 | Elica Spa | Extraction hood for cooking fumes. |
CN107166458A (en) * | 2017-04-24 | 2017-09-15 | 杭州老板电器股份有限公司 | A kind of lampblack absorber of active active noise reduction |
CN108240648B (en) * | 2017-10-31 | 2023-11-17 | 宁波方太厨具有限公司 | Variable-frequency noise-reduction air outlet cover of range hood |
CN108731072A (en) * | 2018-07-14 | 2018-11-02 | 佛山市云米电器科技有限公司 | A kind of kitchen ventilator with the cellular noise filtering device of multilayer |
CN108954436A (en) * | 2018-07-14 | 2018-12-07 | 佛山市云米电器科技有限公司 | A kind of kitchen ventilator with the cellular noise filtering device of multi-frequency |
CN108954431A (en) * | 2018-07-14 | 2018-12-07 | 佛山市云米电器科技有限公司 | A kind of band can reduce the kitchen ventilator of the cellular noise filtering device of specific unifrequency |
CN108954432A (en) * | 2018-07-14 | 2018-12-07 | 佛山市云米电器科技有限公司 | A kind of kitchen ventilator having multi-frequency noise filtering device |
CN109373396A (en) * | 2018-11-27 | 2019-02-22 | 佛山市云米电器科技有限公司 | A kind of kitchen ventilator with noise interference device |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
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DE3151386A1 (en) * | 1981-12-24 | 1983-07-14 | FSL Fenster-System-Lüftung GmbH, 6800 Mannheim | FAN, ESPECIALLY BUILT-IN BLOWER |
JPS60135997A (en) * | 1983-12-26 | 1985-07-19 | 株式会社日立製作所 | Sound absorbing material |
US4838524A (en) * | 1987-09-08 | 1989-06-13 | Cyclops Corporation | Noise barrier |
DE4104963C1 (en) * | 1991-02-18 | 1992-06-25 | Bosch-Siemens Hausgeraete Gmbh, 8000 Muenchen, De | |
FR2690379B1 (en) * | 1992-04-22 | 1995-05-24 | Lorraine Laminage | Sandwich sheet. |
DE4233312A1 (en) * | 1992-10-03 | 1994-04-07 | Ilyas Dipl Ing Oezpolat | Vapour exhaust hood with collector housing and duct to fan - has elbow, forming duct deflector, fitted with sound damping insert on outside. |
DE4443176C1 (en) | 1994-12-05 | 1996-05-02 | Gaggenau Werke | Low-noise extractor hood |
DE19706305A1 (en) | 1997-02-18 | 1998-08-20 | Bosch Siemens Hausgeraete | Extractor hood |
DE29916895U1 (en) | 1999-09-24 | 2000-01-13 | Buercher Friedrich | Frame made of profiled bars, and air duct elements that can be manufactured with them, such as an extractor hood and a wall box with sound insulation |
DE20217398U1 (en) * | 2002-11-08 | 2004-03-18 | Jacobs, Heinz-Josef | Sound damper for ventilation device has inner duct extending inside it and within which is fitted inner damper occupying part of opening cross section of inner duct and consists of perforated plate with fireproof insulation material |
ES2216706B1 (en) * | 2003-04-07 | 2006-01-16 | Cata Electrodomesticos, S.L. | MUFFLER FOR SMOKE EXTRACTOR HOODS. |
FR2911520B1 (en) | 2007-01-19 | 2009-08-28 | Roblin Sas Soc Par Actions Sim | HOOD ASPIRING FOR KITCHEN |
JP5501959B2 (en) * | 2008-04-10 | 2014-05-28 | ブリヂストンケービージー株式会社 | Composite sound absorbing structure |
DE202012103799U1 (en) * | 2012-10-04 | 2012-12-10 | Faist Chemtec Gmbh | Sound-absorbing sandwich panel |
-
2013
- 2013-01-11 DE DE102013100271.4A patent/DE102013100271A1/en not_active Withdrawn
- 2013-12-16 EP EP17181708.3A patent/EP3260782B1/en active Active
- 2013-12-16 EP EP13401137.8A patent/EP2754967B1/en active Active
- 2013-12-16 ES ES13401137T patent/ES2781870T3/en active Active
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
EP2754967A1 (en) | 2014-07-16 |
EP3260782B1 (en) | 2019-02-27 |
EP3260782A1 (en) | 2017-12-27 |
DE102013100271A1 (en) | 2014-07-17 |
ES2781870T3 (en) | 2020-09-08 |
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