EP2754967B1 - Hotte aspirante - Google Patents

Hotte aspirante Download PDF

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Publication number
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
Authority
EP
European Patent Office
Prior art keywords
sound
layer
extractor hood
layers
inhibiting means
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP13401137.8A
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German (de)
English (en)
Other versions
EP2754967A1 (fr
Inventor
Heinrich Adamietz
Christian Lauderlein
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.)
Miele und Cie KG
Original Assignee
Miele und Cie KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Miele und Cie KG filed Critical Miele und Cie KG
Priority to EP17181708.3A priority Critical patent/EP3260782B1/fr
Publication of EP2754967A1 publication Critical patent/EP2754967A1/fr
Application granted granted Critical
Publication of EP2754967B1 publication Critical patent/EP2754967B1/fr
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Anticipated expiration legal-status Critical

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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

Definitions

  • 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.
  • a reduced noise extractor hood is known.
  • the extractor hood has a housing, the inner surfaces of which are partially equipped with a sound-blocking material.
  • Another type of noise reduction is from the utility model DE 299 16 895 is known, in which case the inner surface of the chimney housing of the extractor hood is provided with surface-filling sound-blocking material.
  • Another embodiment of the prior art discloses the DE 197 06 305 , wherein there are two suction fans in the extractor hood described there, which are partially surrounded by a sound-absorbing foam molding.
  • the WO 2008/090080 A1 referenced which also discloses noise-reduced extractor hood, in which sound-blocking material is provided in the inflow duct of the blower unit.
  • 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 1 ⁇ 4 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.
  • 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.
  • 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.
  • 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.
  • the sound barrier device be constructed in a sandwich-like manner and comprise at least one further layer.
  • 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.
  • the sound barrier device preferably comprises a soundproof wall, in particular a wall formed from solid sheet metal.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the noise barrier device 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.
  • 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.
  • the sound barrier device 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.
  • a relatively thin membrane for absorbing low frequencies and a relatively thick membrane for absorbing high frequencies are advantageously suitable and provided.
  • 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.
  • the following layer sequence 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.
  • a seventh layer is provided, which can be a reverberant wall, such as a solid sheet, as a finishing layer.
  • the Figure 1 shows a perspective view of a noise barrier device 1, which for example in Figure 5 Extractor hood 15 shown is determined.
  • a blower unit 2 is arranged, the suction side 3 of which is fluidically connected to the suction area 17 of the extractor hood 15.
  • the blower unit 2 is, as shown, at least partially surrounded by the sound-blocking device 1, which at least significantly prevents the propagation of the operating noise of the blower unit 2.
  • the sound obstruction device 1 in this case comprises two sound obstruction units 4 and 5, which have a sandwich-like construction with sound-absorbing and sound-reflecting units Layers of material are provided to provide broadband noise reduction.
  • the cassette-like sound obstruction units 4 and 5 are essentially aligned in the housing 16 of the extractor hood 15 or to the blower unit 2, the cassette-like sound obstruction units 4 and 5 being insertable into and removable from a frame frame unit 20, as shown in FIG the Figure 1 is shown.
  • a noise-reducing unit 4, 5 is provided in the frame unit 20 on both sides of the blower unit 2.
  • the first layer comprises a perforated plate 6, the free area of which is at least 60% of the total area of the perforated plate.
  • the perforation is largely evenly distributed.
  • the second layer has a fleece 11 as a fibrous material, which has a sound-permeable but moisture and fat-repellent property and thus acts in particular as a vapor and fat barrier.
  • a porous material 12 consisting of Basotect foam is used as the third layer.
  • the fourth layer in turn comprises a perforated plate 7, the free area of which is at least 40% of the total area of the perforated plate and the perforation is evenly distributed.
  • the fifth layer is a thin elastic membrane 13, which is therefore stretched over the perforated plate 7 on the fourth layer.
  • the sixth layer is provided here as an air layer 14 with a thickness of approx. 1/6 of the total thickness of the sound barrier unit 4 or 5.
  • a seventh layer is provided, which is a soundproof wall 8 made of a solid sheet metal as the final layer.
  • the reverberant end wall 8 can be the chimney wall of the housing 16 of the extractor hood.
  • the free area of the perforations of the first perforated plate is at least 60% of the total area of the first perforated plate, the free area of the perforations of the second perforated plate 7, not shown in more detail, being at least 40% of the total area of the second perforated plate 7.
  • the air layer as such takes up about 1/6 of the total thickness of the sound-blocking unit 4, 5.

Claims (13)

  1. Hotte aspirante (15) comprenant un boîtier (16) comportant une zone d'aspiration (17) pour les vapeurs et une unité de ventilation (2) disposée dans le boîtier, unité de ventilation dont le côté aspiration (3) est raccordé fluidiquement à la zone d'aspiration (17), dans laquelle l'unité de ventilation (2) est au moins partiellement entourée par un dispositif antibruit (1) qui comprend au moins une couche présentant une tôle perforée (6) et une couche (12) présentant un matériau poreux, destinées à empêcher la diffusion des bruits de fonctionnement de l'unité de ventilation (2), caractérisée en ce qu'une couche (11) présentant un matériau fibreux est prévue au niveau du dispositif antibruit (1), laquelle couche est disposée, par rapport à l'unité de ventilation (2), devant la couche (12) présentant le matériau poreux, le matériau fibreux permettant le passage du son et empêchant en revanche au moins le passage de la graisse et de l'humidité, le dispositif antibruit (1) comprenant au moins une unité antibruit en forme de cassette (4, 5), et en ce qu'une unité de châssis (20) est associée à l'unité de ventilation (2), l'unité antibruit en forme de cassette (4, 5) pouvant être insérée de manière amovible dans l'unité de châssis (20).
  2. Hotte aspirante (15) selon l'une des revendications précédentes, caractérisée en ce que le dispositif antibruit (1) est réalisé sous forme de sandwich et comprend en particulier au moins une autre couche (7, 13, 14, 8).
  3. Hotte aspirante (15) selon l'une des revendications précédentes, caractérisée en ce que le dispositif antibruit (1) fait obstruction aux ondes sonores de basse fréquence, en particulier celles inférieures à 1 200 Hz, et/ou aux ondes sonores de haute fréquence, en particulier celles supérieures à 1 200 Hz, et est en particulier conçu pour l'obstruction du bruit à large bande.
  4. Hotte aspirante (15) selon l'une des revendications précédentes, caractérisée en ce que le dispositif antibruit (1) comprend, en tant que couche supplémentaire, une paroi réverbérante (8), en particulier une paroi en tôle pleine.
  5. Hotte aspirante (15) selon l'une des revendications précédentes, caractérisée en ce que le dispositif antibruit (1) comprend, en tant que couche supplémentaire, une membrane élastique sous tension (13), en particulier une membrane élastique (13) formée d'un film, de caoutchouc ou d'une feuille mince, la membrane (13) étant fixée, en particulier collée, à un cadre ou à une couche de matériau poreux précédente ou subséquente, ou à une couche présentant une tôle perforée (7).
  6. Hotte aspirante (15) selon l'une des revendications précédentes, caractérisée en ce que le dispositif antibruit (1) comprend, en tant que couche supplémentaire, une couche d'air (14) qui est disposée en particulier entre la couche présentant une membrane élastique (13) et la couche adjacente présentant une plaque perforée (7) ou une paroi réverbérante (8), la couche d'air (14) possédant en particulier une épaisseur de 1/6 de l'épaisseur totale de toutes les couches du dispositif antibruit (1).
  7. Hotte aspirante (15) selon l'une des revendications précédentes, caractérisée en ce que le dispositif antibruit (1) comprend au moins une couche qui atténue et/ou absorbe au moins partiellement le bruit, et au moins une couche qui réfléchit au moins partiellement le bruit, dans laquelle une couche présente un matériau poreux (12) ou une membrane élastique (13) possédant un effet d'atténuation ou d'absorption du bruit et une couche présentant une tôle perforée (6, 7) ou une paroi réverbérante (8) possédant un effet réfléchissant le son.
  8. Hotte aspirante (15) selon la revendication précédente, caractérisée en ce qu'au moins une couche qui atténue ou absorbe au moins partiellement le bruit est disposée entre une couche réfléchissant au moins partiellement le bruit et une autre couche réfléchissant au moins partiellement le bruit.
  9. Hotte aspirante (15) selon l'une des revendications précédentes, caractérisée en ce que le matériau poreux (12) est une mousse, en particulier une mousse en Basotect ou une mousse en mélamine, ou est de la laine de roche.
  10. Hotte aspirante (15) selon l'une des revendications précédentes 5 à 10, caractérisée en ce que la paroi réverbérante (8) est formée par une paroi du boîtier de la hotte aspirante.
  11. Hotte aspirante (15) selon l'une des revendications précédentes, caractérisée en ce que le dispositif antibruit (1) comprend au moins deux couches présentant une tôle perforée (6, 7), la surface libre des perforations de la tôle perforée (6) étant en particulier au moins 60 % de la surface totale de la tôle perforée dans la couche plus proche de l'unité de ventilation de ces au moins deux couches, et étant supérieure à la surface libre des perforations de la tôle perforée (7) de l'au moins une autre couche de ces au moins deux couches, la surface libre des perforations étant en particulier au moins 40 % de la surface totale de la tôle perforée.
  12. Hotte aspirante (15) selon l'une des revendications précédentes, caractérisée en ce que le dispositif antibruit (1) comprend au moins deux couches présentant un matériau poreux (12), la couche se trouvant la plus proche par rapport à l'unité de ventilation (2) de ces au moins deux couches (12) présentant un matériau avec un diamètre de pores supérieur ou une épaisseur inférieure à celle du matériau poreux de l'au moins une autre couche de ces au moins deux couches.
  13. Hotte aspirante (15) selon l'une des revendications précédentes, caractérisée en ce que le dispositif antibruit (1) comprend au moins deux couches présentant une membrane élastique (13), la membrane élastique étant plus fine dans la couche la plus proche par rapport à l'unité de ventilation (2) de ces au moins deux couches que la membrane élastique de l'au moins une autre couche de ces au moins deux couches.
EP13401137.8A 2013-01-11 2013-12-16 Hotte aspirante Active EP2754967B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP17181708.3A EP3260782B1 (fr) 2013-01-11 2013-12-16 Hotte aspirante

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102013100271.4A DE102013100271A1 (de) 2013-01-11 2013-01-11 Dunstabzugshaube

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP17181708.3A Division EP3260782B1 (fr) 2013-01-11 2013-12-16 Hotte aspirante
EP17181708.3A Division-Into EP3260782B1 (fr) 2013-01-11 2013-12-16 Hotte aspirante

Publications (2)

Publication Number Publication Date
EP2754967A1 EP2754967A1 (fr) 2014-07-16
EP2754967B1 true EP2754967B1 (fr) 2020-03-11

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EP13401137.8A Active EP2754967B1 (fr) 2013-01-11 2013-12-16 Hotte aspirante
EP17181708.3A Active EP3260782B1 (fr) 2013-01-11 2013-12-16 Hotte aspirante

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EP17181708.3A Active EP3260782B1 (fr) 2013-01-11 2013-12-16 Hotte aspirante

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EP (2) EP2754967B1 (fr)
DE (1) DE102013100271A1 (fr)
ES (1) ES2781870T3 (fr)

Families Citing this family (11)

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DE102015100564B4 (de) * 2015-01-15 2021-07-22 Miele & Cie. Kg Dunstabzugshaube
DE102015101039A1 (de) * 2015-01-26 2016-07-28 Miele & Cie. Kg Dunstabzugshaube
DE102015213471B4 (de) * 2015-07-17 2021-11-11 Wilhelm Bruckbauer Lüfterbaustein
IT201600102040A1 (it) * 2016-10-11 2018-04-11 Elica Spa Cappa per l’aspirazione di fumi di cottura.
CN107166458A (zh) * 2017-04-24 2017-09-15 杭州老板电器股份有限公司 一种主动有源降噪的油烟机
CN108240648B (zh) * 2017-10-31 2023-11-17 宁波方太厨具有限公司 一种吸油烟机的变频降噪出风罩
CN108954436A (zh) * 2018-07-14 2018-12-07 佛山市云米电器科技有限公司 一种带多频率蜂巢式噪声过滤装置的油烟机
CN108954431A (zh) * 2018-07-14 2018-12-07 佛山市云米电器科技有限公司 一种带能降低特定单频率蜂巢式噪声过滤装置的油烟机
CN108954432A (zh) * 2018-07-14 2018-12-07 佛山市云米电器科技有限公司 一种具多频率噪声过滤装置的油烟机
CN108731072A (zh) * 2018-07-14 2018-11-02 佛山市云米电器科技有限公司 一种带多层蜂巢式噪声过滤装置的油烟机
CN109373396A (zh) * 2018-11-27 2019-02-22 佛山市云米电器科技有限公司 一种具有噪声干涉装置的油烟机

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Also Published As

Publication number Publication date
EP2754967A1 (fr) 2014-07-16
EP3260782B1 (fr) 2019-02-27
EP3260782A1 (fr) 2017-12-27
DE102013100271A1 (de) 2014-07-17
ES2781870T3 (es) 2020-09-08

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