EP2839220B1 - Hotte de cuisine avec un filtre anti-odeur - Google Patents

Hotte de cuisine avec un filtre anti-odeur Download PDF

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Publication number
EP2839220B1
EP2839220B1 EP13727977.4A EP13727977A EP2839220B1 EP 2839220 B1 EP2839220 B1 EP 2839220B1 EP 13727977 A EP13727977 A EP 13727977A EP 2839220 B1 EP2839220 B1 EP 2839220B1
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EP
European Patent Office
Prior art keywords
filter
filtering
hood
air
housing
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
EP13727977.4A
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German (de)
English (en)
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EP2839220A1 (fr
Inventor
Mauro SANTUCCI
Cristina VIOZZI
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.)
Whirlpool EMEA SpA
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Whirlpool EMEA SpA
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Publication of EP2839220A1 publication Critical patent/EP2839220A1/fr
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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
    • F24C15/2035—Arrangement or mounting of filters

Definitions

  • the present invention relates to the field of extraction or recirculating hoods, in particular for treating fumes and odours in household environments, e.g. a range hood.
  • Aspirating and/or filtering devices are known which are to be installed near places where fumes or odours are generated.
  • such aspirating and/or filtering devices are called "hoods" and are typically installed in household environments, such as a kitchen.
  • the term “fumes” designates an aeriform substance, typically air, contaminated by suspended liquid, solid or ethereal particles. As far as range hoods are concerned, the aspirated fumes typically transport suspended greasy particles and odours generated by food being cooked.
  • hoods take in fumes from the environment, discharging the aspirated air into a ventilation duct, which then evacuates both fumes and odours out in the open; such hoods are hence referred to as "extraction hoods”.
  • hoods collect fumes from the environment, filter them, and then reintroduce purified air into the same environment; hoods of this latter type are called “recirculating hoods", and the present invention proves to be especially advantageous for such recirculating hoods.
  • hood and an associated filter is known from document DE202009017271U1 , which describes a filter element comprising multiple filtering layers arranged in series, which include odour filtering layers comprising activated carbon.
  • hood filters known in the art suffer from the drawback that they cannot fully exploit their filter elements.
  • activated carbon has a tendency to lose its adsorbing capacity after a certain number of working hours, so that the effectiveness of the filter will progressively decrease
  • Further prior art can be found in the documents DE 198 38 648 A1 and DE 10 2009 023241 A1 .
  • a hood comprising a fume collector, in fluidic connection with a chimney, and air circulating means for drawing air through said fume collector and directing it into said chimney and further comprising an odour filter adapted to filter said air.
  • a further object of the present invention is to provide a hood filter comprising at least two consecutive filtering layers along the direction of flow; the filter has a substantially cylindrical shape, thus defining a lateral filtering surface, wherein the two filtering layers are concentrically arranged on the lateral surface, being placed one inside the other.
  • the filter has a larger filtering surface, the occupied volume being equal, and allows for a better exploitation of the filter elements.
  • the first filtering layer comprises a pleated textile
  • the second filtering layer comprises activated carbon
  • the filter comprises at least one air flow inlet on a base of the filter, in a position substantially transversal to the lateral filtering surface. This allows to create a compact filter particularly suitable for use in household filtering hoods.
  • the first pleated-textile filtering layer is preferably internal with respect to the second activated-carbon filtering layer, thus being located upstream along the direction of flow.
  • the air flow to be filtered is thus first filtered by the textile and only afterwards by the activated carbon; this improves the filtering effectiveness in terms of odour elimination, while also improving the life of the active elements, such as activated carbon.
  • the pleated-textile filtering layer also comprises activated carbon.
  • the second filtering layer (402) preferably comprises activated carbon in granular form. This ensures higher effectiveness in terms of odour filtration.
  • An object not being part of the invention, provides a filter-housing assembly for use in a hood, i.e. an special element adapted to house the filter of the present invention, which contributes, in synergy with the latter, to the creation of an improved filtering system, in particular suitable for use in a filtering hood.
  • the assembly comprises a filter according to the present invention, and further comprises a housing adapted to receive the filter; the housing comprises at least one bottom aperture that provides a fluidic connection between the hood and the filter, and further comprises at least one aperture for the outflow of filtered air from the filter.
  • the housing also makes maintenance of the hood simpler, in that it is easier to service and/or replace a filter in the assembly.
  • the housing has a substantially box-like shape for containing the filter, and the outflow aperture is located on at least one of the side faces of the housing. This allows to minimize the overall dimensions of the filter-housing assembly.
  • the housing is made of stainless steel, or any other material suitable for domestic use, which is easy to clean and resistant to agents present in the environment, such as grease and dust.
  • the shape of the filter is adapted to be coupled, in the assembly, to the bottom aperture of the housing, thereby creating a fluidic connection for an air flow within the filter itself. This further improves the compactness of the assembly.
  • FIG 1 shows one example of a range hood 101 of the recirculating type.
  • the hood 101 comprises a fume collector 102, which is typically positioned above a cooking top; the fume collector 102 may comprise further filter elements (not shown) for filtering airborne greasy particles, consisting of filters in accordance with the teachings of the prior art.
  • the hood 101 further comprises air circulating means (not shown), e.g. a fan, adapted to draw air from the fume collector 102 and convey it through the chimney 104.
  • air circulating means e.g. a fan
  • the housing 106 comprises a plurality of apertures to allow the air drawn by the hood to flow out into the household environment after having been appropriately filtered. In this way it is possible to purify the air collected by the hood 101 from any ethereal substances transporting unpleasant odours.
  • the housing 106 has a substantially cubic shape, apertures being provided on the three side faces that look on to the environment.
  • the housing may comprise aperture on all four side faces.
  • the apertures of the housing 106 have a reduced section compared to the lateral surface of the housing 106, preferably less than 10% of the total lateral area. In this manner, it is possible to create a hood in which there is a load loss concentrated downstream of the odour filter, thereby improving the filtering action of the latter thanks to an appropriate reduction of the air flow velocity.
  • the housing 106 also performs an aesthetical function, since it hides the filter from view to any users in the room where the hood 101 is located. In fact, it should be reminded that the hood 101 is of the "recirculating" type, and the air collected by the fume collector 102, once purified, is reintroduced into the same environment; therefore, it is typically visible to the user.
  • the housing 106 is preferably made of a metallic material, such as stainless steel, in particular suitable for use in household conditions, with an aesthetically pleasant surface finish.
  • Figure 2 shows a sectional side view of the hood 101, where the air circulating means 103 are visible, which deliver the air from the chimney 104 into the duct 107 (between which the air circulating means, e.g. a fan, are interposed), which duct is in fluidic connection with the filter 105, which will be described more in detail below.
  • the air circulating means 103 e.g. a fan
  • Figure 3 shows in more detail the housing 106, separated from the hood 101.
  • a bottom aperture 301 on the base of the housing 106, through which the air to be filtered, coming from the duct 107, enters the filter.
  • the lateral surfaces 302 of the housing which create the small-section apertures described above.
  • at least one of the lateral surfaces 302 comprises removable mounting means, so that it can be removed by a user or an operator for servicing the filter housed within.
  • the housing comprises a frame adapted to structurally support a plurality of panels constrained to the frame itself and arranged on the faces of the housing in such a way as to create a structure within which the filter is accommodated.
  • FIG. 4 is a sectional view along a horizontal plane of the housing 106, which shows a cross-section of the filter 105 housed therein.
  • the filter 105 comprises a substantially cylindrical structure, which is internally hollow and which matches the aperture 301 so as to allow the air that must be filtered to enter the filter 105.
  • the side walls of the filter 105 are permeable to air and comprise filtering materials as will be described below, so that they can filter the air, e.g. to reduce the odours thereof.
  • the filter 105 creates a double concentric filter structure, comprising an internal filtering portion 401 comprising a pleated filtering textile, and an external filtering portion 402 comprising activated carbon.
  • the internal filtering portion 401 comprises a pleated textile with pleats substantially longitudinal relative to the filter.
  • the external filtering portion 402 comprises a structure made of perforated microstretched sheet-metal or a reticular structure, which is adapted to create a containment volume for the activated carbon.
  • the activated carbon is in granular form, preferably with such characteristics as to have a CCl4 Index ⁇ 80% (calculated with the ASTM3467-89 method) and a surface area >1100 Mq/g (calculated with the BET with Nitrogen method).
  • the pleated textile has a number of pleats between 50 and 100, preferably between 60 and 75, more preferably between 65 and 70.
  • the internal aperture of the filter 105 has a diameter of 160 mm to 180 mm.
  • the internal filtering portion 401 made of pleated textile has a thickness of 35 mm to 50 mm.
  • the external filtering portion 402 comprising activated carbon has a thickness of 10 mm to 20 mm.
  • the filter 105 has a total diameter of 280 mm to 320 mm and a height of 270 mm to 300 mm.
  • FIG. 5 shows a general view of the filter 105.
  • the structure of the filter 105 is such that it defines an inlet 501 on the bottom face of the filter 105, which inlet is arranged transversally with respect to the structure with cylindrical symmetry.
  • the inlet 501 is adapted to be coupled to the aperture 301 of the housing 106, so as to allow air to flow through the filter 105 without any leakage.
  • the interface between the aperture 301 and the inlet 501 features a suitable shape coupling.
  • the diameter of the inlet 501 is greater than the diameter of the aperture 301, so as to appropriately slow down the flow immediately upstream of the filtering layers.
  • the top face 502 of the filter 105 is preferably closed, for example, by a plate of a material such as steel.
  • the top face of the filter 502 may be open, and it may be closed by coupling it to an additional surface of the housing 106.
  • the plate on the top face of the housing 106 may abut on the top face 502 of the filter 105, and a sealing gasket may additionally be used.
  • Figure 6 shows a transparency view of the filter 105, where one can appreciate the concentric arrangement of the filter elements 401 and 402 of the filter 105.
  • This concentric arrangement maximizes the filtering surface, the outer dimensions being equal, and makes it possible to create a more efficient and compact filter, wherein the activated-carbon filter elements have an extended life.
  • the provision of a lateral filtering surface in the filter 105 when inserted in a hood 101, allows diverting the filtered air flow from the direction of the chimney 104. This improves the fluid-dynamics within the filter 105, resulting in better suction and filtering actions.
  • substantially cylindrical shape refers to a solid whose projection onto a plane perpendicular to the axis of symmetry is a closed figure, such as, for example, a circumference or an ellipse.
  • a truncated cone or a solid created on an elliptical base or the like should be considered to have a “substantially cylindrical” shape.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Ventilation (AREA)

Claims (2)

  1. Hotte (101) comprenant un collecteur de fumée (102), en communication fluidique avec une cheminée (104), et un moyen de circulation d'air (103) pour aspirer de l'air à travers ledit collecteur de fumée (102) et le diriger dans ladite cheminée (104) et comprenant en outre un filtre anti-odeur (105) adapté pour filtrer ledit air,
    caractérisée en ce que ledit filtre anti-odeur (105) comprend au moins deux couches filtrantes (401, 402) agencées de façon consécutive le long de la direction de flux,
    dans laquelle ledit filtre anti-odeur (105) présente une forme sensiblement cylindrique, définissant ainsi une surface filtrante latérale (503), et lesdites couches filtrantes (401, 402) sont agencées de façon concentrique sur ladite surface latérale (503), étant placées l'une à l'intérieur de l'autre,
    dans laquelle une première couche filtrante (401) comprend un textile plissé et une seconde couche filtrante (402) comprend du charbon actif,
    ledit filtre anti-odeur (105) comprenant en outre au moins une entrée (501) pour un flux d'air, ladite entrée (501) étant sensiblement transversale à ladite surface filtrante latérale (503) sur une base dudit filtre anti-odeur (105).
  2. Hotte (101) selon la revendication 1, dans laquelle ladite première couche filtrante (401) est interne par rapport à ladite seconde couche filtrante (402) dans ledit filtre anti-odeur (105), étant ainsi située en amont de ladite seconde couche filtrante (402) le long de ladite direction de flux.
EP13727977.4A 2012-04-17 2013-04-09 Hotte de cuisine avec un filtre anti-odeur Active EP2839220B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000332A ITTO20120332A1 (it) 2012-04-17 2012-04-17 Filtro odori per cappa da cucina e relativa cappa da cucina
PCT/IB2013/052821 WO2013156897A1 (fr) 2012-04-17 2013-04-09 Filtre anti-odeur pour une hotte de cuisine et hotte de cuisine associée

Publications (2)

Publication Number Publication Date
EP2839220A1 EP2839220A1 (fr) 2015-02-25
EP2839220B1 true EP2839220B1 (fr) 2021-02-24

Family

ID=46584209

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13727977.4A Active EP2839220B1 (fr) 2012-04-17 2013-04-09 Hotte de cuisine avec un filtre anti-odeur

Country Status (4)

Country Link
EP (1) EP2839220B1 (fr)
EA (1) EA028025B1 (fr)
IT (1) ITTO20120332A1 (fr)
WO (1) WO2013156897A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EA037076B1 (ru) * 2019-08-12 2021-02-02 Федеральное государственное бюджетное образовательное учреждение высшего образования "Петербургский государственный университет путей сообщения Императора Александра I" Устройство для вентиляции воздуха над плитой для приготовления пищи

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19838648A1 (de) * 1998-07-18 2000-01-20 Sirius Dunstabzugsgeraete Gmbh Dunstabzugshauben-System
DE202007003135U1 (de) * 2007-03-03 2007-06-21 Gök, Ilhan, Dipl.-Ing. Nachfüllbare Filterkartusche
DE102009023241A1 (de) * 2009-05-30 2011-04-07 Adek Bauteile Gmbh Filtervorrichtung einer Dunstabzugshaube oder einer Luftreinigungsvorrichtung im Küchen- und Wohnbereich

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004049978A1 (de) * 2004-10-14 2006-04-20 Exklusiv-Hauben Gutmann Gmbh Dunstabzugshaube
DE202009017271U1 (de) 2009-12-19 2010-03-25 Mahle International Gmbh Dunstabzugshaube

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19838648A1 (de) * 1998-07-18 2000-01-20 Sirius Dunstabzugsgeraete Gmbh Dunstabzugshauben-System
DE202007003135U1 (de) * 2007-03-03 2007-06-21 Gök, Ilhan, Dipl.-Ing. Nachfüllbare Filterkartusche
DE102009023241A1 (de) * 2009-05-30 2011-04-07 Adek Bauteile Gmbh Filtervorrichtung einer Dunstabzugshaube oder einer Luftreinigungsvorrichtung im Küchen- und Wohnbereich

Also Published As

Publication number Publication date
WO2013156897A1 (fr) 2013-10-24
EA201491884A1 (ru) 2015-02-27
ITTO20120332A1 (it) 2013-10-18
EA028025B1 (ru) 2017-09-29
EP2839220A1 (fr) 2015-02-25

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