EP1887286B1 - Amélioration dans l'agencement de ventilation d'une hotte d'extraction de fumée - Google Patents

Amélioration dans l'agencement de ventilation d'une hotte d'extraction de fumée Download PDF

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Publication number
EP1887286B1
EP1887286B1 EP20070113229 EP07113229A EP1887286B1 EP 1887286 B1 EP1887286 B1 EP 1887286B1 EP 20070113229 EP20070113229 EP 20070113229 EP 07113229 A EP07113229 A EP 07113229A EP 1887286 B1 EP1887286 B1 EP 1887286B1
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EP
European Patent Office
Prior art keywords
extractor hood
hood according
cylindrical member
air
suction
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.)
Not-in-force
Application number
EP20070113229
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German (de)
English (en)
Other versions
EP1887286A3 (fr
EP1887286A2 (fr
Inventor
Dragan Raus
Marco Puppin
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Electrolux Professional SpA
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Electrolux Professional SpA
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Priority to EP09004438.9A priority Critical patent/EP2088377B1/fr
Publication of EP1887286A2 publication Critical patent/EP1887286A2/fr
Publication of EP1887286A3 publication Critical patent/EP1887286A3/fr
Application granted granted Critical
Publication of EP1887286B1 publication Critical patent/EP1887286B1/fr
Not-in-force legal-status Critical Current
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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 present invention refers to an improved kind of extractor hood for extracting fumes and vapours from a closed room and exhausting them outside, as provided with improved means adapted to perform the task of conveying and exhausting said fumes and vapours in a particularly quick, efficient and cost-effective manner.
  • JP 02-183750 is an extractor hood that generates a vortex, which is generally of assistance to the circulation and the exhaustion of the gases being extracted; such vortex is brought about by at least a blowing port located vertically and laterally relative to the same hood.
  • JP 01-114650 is an extractor hood that is provided on its lower side with a circular member having appropriate perforations distributed all over it, from which related air flows are ejected so as to bring about a whirling, i.e. vortex-like circulation inside them and, as a result, even in the space therebelow.
  • a circular member having appropriate perforations distributed all over it, from which related air flows are ejected so as to bring about a whirling, i.e. vortex-like circulation inside them and, as a result, even in the space therebelow.
  • Such circular member is capable of being oriented and located exactly in the preferred position above the burner or hotplate generating the fumes that are to be extracted.
  • JP 9042734 is a further kind of extractor hood that is adapted to generate an air vortex in the region lying therebelow.
  • this solution has the drawback of being scarcely effective owing to the fact that said air vortex is brought about by an air stream issuing obliquely downwards from the same hood and, therefore, from a certain distance from the zone where the fumes and gases to be extracted are generated, i.e. the cooking surface or hob, so that its capacity to adequately invest and affect the desired zone above the cooking surface or hob turns out as being quite modest, actually.
  • JP 11-311432 Disclosed in JP 11-311432 is an extractor hood that is provided with means adapted to create, in the region lying therebelow, an air circulation of a rotary vortex, i.e. whirling kind. Even in this case, however, the air circulation is brought about by the action of a single suction fan that at the same time brings about also the whirling, vortex-like circulation generated from above.
  • a hood according to the prior art and the present invention comprises:
  • said ventilation means comprise:
  • each one of said outflow channels 13 is in a generally cylindrical or prismatic shape, and is further provided with one or more outflow ports 14, which are:
  • outflow ports are arranged in a coherent manner, in the sense that the outflow ports of two contiguous channels 13 are in no case opposing each other, but are rather turned in the same direction, i.e. facing the same way relative to a single direction of rotation extending horizontally over the inner surface of said cylindrical member 11.
  • said cylindrical member 11 terminates at its bottom with a lower rim 120 that is abundantly spaced away from the cooking surface or hob 10 lying therebelow, so as to avoid interfering with the good accessibility of said cooking surface from all sides thereof or, still worse, preventing the same cooking surface from being capable of being conveniently accessed to from all sides thereof by an operator.
  • the inner portion of said cylindrical member 11 is provided with the afore-described plurality of outflow ports 14 in an arrangement in which they are distributed with a certain regularity along the perimeter of such portion.
  • the same air streams will be blown out through said outflow ports 14, thereby being converted into respective air jets "g" that are blown in a concordant manner all along the inner surface of said cylindrical member 11.
  • the air velocity at such point can be represented by a vector having three components, i.e. an ascensional or upward component, a radial component directed towards said axis X, and a third tangential component.
  • Such curve can be noticed to show a descending trend towards both extremities thereof, whereas in an intermediate position thereof the same curve reaches a peak at a point M.
  • inventive extractor hood may be provided with a filtering member 25, which - for it to be conveniently accessible and, at the same time, be prevented from interfering with the rotary, i.e. whirling circulation of the air under the hood - is preferably provided in the shape of a frustum of a cone and is applied immediately under said suction mouth 24.
  • a further advantageous embodiment of the present invention calls for said outflow ports to be provided in the form of a sequence of slots 33 opening onto the inner perimeter 30 of a horizontal channel 31 provided inside said cylindrical member 11 immediately underneath said upper planar member 1.
  • Such horizontal channel 31 is delimited internally by an alternate sequence of closed vertical surfaces 34, which are spaced from each other by said slots 33, and which determine said inner perimeter 30; it is further delimited externally by a box-like casing 40 substantially coinciding with said cylindrical member 11, and at the bottom by a planar member 41 that is substantially similar and parallel to said upper planar member 1.
  • Each one of said closed vertical surfaces 34 is provided at the sides with two respective edges 34A and 34B, wherein said edges are arranged in an alternate manner relative to the complete sequence of the leading and trailing edges of all said surfaces 34; on one 34A of said edges of each such closed surface 34 there is provided a respective airflow-deflecting fin or baffle 37 oriented inwardly, i.e. towards the interior of said channel 31, in a manner that is consistent relative to a single direction of circulation of the air inside said ring-like channel.
  • each one of said air-flow deflecting fins 37 forms a member adapted to divert, i.e. deflect the flow of air circulating within said ring-like channel 31.
  • the inclination of the fins in general can be easily modified and on the so defined inclination of the fins there depends not only the width of the respective slot, but also the rate and - to a certain extent - also the prevailing inclination of the airflow being blown into said cylindrical member 11 from such slot.

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

Claims (14)

  1. Hotte d'extraction de fumée, comprenant :
    - un organe horizontal plan supérieur (1) adapté pour piéger et recueillir des vapeurs et des gaz s'écoulant vers le haut à partir d'une table de cuisson (10) située en dessous de celui-ci, où les vapeurs et les fumées devant être extraites sont produites,
    - un conduit d'aspiration (2) qui est ouvert dans la région médiane dudit organe horizontal plan supérieur (1),
    - des premiers moyens d'aspiration associés audit conduit d'aspiration et adaptés pour aspirer les fumées et les vapeurs à partir de celui-ci et les souffler vers l'extérieur, de tels moyens comprenant un ventilateur d'aspiration (21) associé audit conduit (2),
    - des moyens de ventilation adaptés pour communiquer un mouvement de tourbillonnement autour d'un axe vertical (X) au mélange d'air et d'autre gaz contenus dans le volume en dessous dudit organe horizontal plan supérieur (1),
    lesdits moyens de ventilation comprenant un organe cylindrique intérieurement creux (11), dont un bord périphérique est placé sur le bord extérieur (110) dudit organe horizontal plan supérieur (1), et qui s'étend verticalement vers le bas à partir dudit organe horizontal plan supérieur (1) sans atteindre le niveau de la table de cuisson (10) ou d'une surface similaire située en dessous de celui-ci, caractérisée en ce qu'un canal horizontal intérieurement creux (31) est défini à l'intérieur dudit organe cylindrique (11), lequel canal est délimité vers l'intérieur par un périmètre intérieur comprenant une séquence alternée de surfaces fermées sensiblement verticales (34) s'intercalant avec une séquence alternée correspondante de fentes respectives (33), et délimité vers le bas par un organe plan (41).
  2. Hotte d' extraction selon la revendication 1, caractérisée en ce que lesdites surfaces fermées sont pourvues d'ailettes ou de déflecteurs respectifs (37) placé(e)s sur un bord vertical respectif (34A) de celles-ci et orienté(e)s de telle sorte que la séquence alternée desdites fentes (33) et desdits déflecteurs (37) associés auxdites surfaces fermés (34) détermine une pluralité d'orifices de sorties d'écoulement.
  3. Hotte d'extraction selon la revendication 2, caractérisée en ce que lesdit(e)s ailettes ou déflecteurs (37) sont pourvu(e)s de moyens de commande adaptés pour permettre d'ajuster l'angle de rotation de chaque telle ailette ou tel déflecteur (37) autour du bord vertical respectif (34A).
  4. Hotte d'extraction selon la revendication 3, caractérisée en ce que lesdit(e)s ailettes ou déflecteurs (37) sont relié(e)s par le biais de moyens mécaniques adaptés pour commander d'une manière synchrone et similaire l'inclinaison desdit(e)s ailettes ou déflecteurs (37).
  5. Hotte d'extraction selon la revendication 4, caractérisée en ce que lesdits moyens mécaniques comprennent une bague d'ajustement (38) reliant lesdit(e)s ailettes ou déflecteurs (37).
  6. Hotte d'extraction selon l'une quelconque des revendications précédentes, caractérisée en ce que lesdites fentes (33) sont orientées de telle sorte que les flux d'air respectifs sortant de celles-ci soient soufflés dans une direction horizontale (a) avec une inclinaison qui est sensiblement inférieure à 10° par rapport à la tangente (t) à la circonférence dudit organe cylindrique (11) au point d'application (P) avec le canal de sortie d'écoulement respectif.
  7. Hotte d'extraction selon l'une quelconque des revendications précédentes, caractérisée en ce que le rapport de la hauteur (h1) dudit organe cylindrique (11) au diamètre, ou à la plus grande dimension (D1), dudit organe plan supérieur (1) est situé n'importe ou entre 3,25 et 4,0.
  8. Hotte d'extraction selon l'une quelconque des revendications précédentes, caractérisée en ce que le rapport de la somme des débits desdites fentes (33) au débit dudit conduit d'aspiration (2) est situé n'importe où entre 0,6 et 1,0.
  9. Hotte d'extraction selon l'une quelconque des revendications précédentes, caractérisée en ce que la fréquence de remplacement d'air, c'est-à-dire le nombre de fois que l'air contenu à l'intérieur dudit organe cylindrique (11) est remplacé par l'air soufflé à partir desdites fentes (33) par unité de temps, est située n'importe où entre 35 et 45 fois par minute.
  10. Hotte d'extraction selon l'une quelconque des revendications précédentes, caractérisée en ce que la vitesse angulaire de la circulation rotative c'est-à-dire tourbillonnante, dudit air et desdites fumées, telle que produite par lesdits moyens de ventilation et mesurée le long de la trajectoire la plus à l'extérieur à l'intérieur dudit organe cylindrique (11), est située n'importe où entre 50 et 60 tr/min.
  11. Hotte d'extraction selon l'une quelconque des revendications précédentes, caractérisée en ce que le rapport de la vitesse tangentielle la plus à l'extérieur moyenne (VI) de ladite circulation d'air rotative ou tourbillonnante à la vitesse de sortie d'écoulement d'air à partir desdites fentes (33) est situé n'importe où entre 4,0 et 6,0.
  12. Hotte d'extraction selon l'une quelconque des revendications précédentes, caractérisée en ce que lesdits premiers moyens d'aspiration et lesdits moyens de ventilation pour produire ladite circulation d'air tourbillonnant comprennent des ventilateurs respectifs (21, 22), ces deux ventilateurs étant reliés mécaniquement à un seul et même moteur d'entraînement (23).
  13. Hotte d'extraction selon l'une quelconque des revendications précédentes, caractérisée en ce que, à proximité ou au niveau d'une bouche d'aspiration (24) dudit conduit d'aspiration (2), un organe filtrant (25) est logé, lequel s'étend au moins partiellement dans le volume renfermé par ledit organe cylindrique (11) sous la forme d'un tronc de cône.
  14. Ensemble de cuisson comprenant :
    - une hotte d'extraction selon l'une quelconque des revendications précédentes ;
    - une surface ou plaque de cuisson (10) située en dessous de la hotte d'extraction ; caractérisé en ce que le rapport de la dimension horizontale maximale dudit organe cylindrique (11) à la distance du rebord inférieur (120) de celui-ci à ladite surface ou plaque de cuisson (10) située en dessous de celui-ci est situé n'importe où entre 0,75 et 1,0.
EP20070113229 2006-07-27 2007-07-26 Amélioration dans l'agencement de ventilation d'une hotte d'extraction de fumée Not-in-force EP1887286B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09004438.9A EP2088377B1 (fr) 2006-07-27 2007-07-26 Amélioration dans l'agencement de ventilation d'une hotte d'extraction de fumée

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITPN20060058 ITPN20060058A1 (it) 2006-07-27 2006-07-27 Cappa di aspirazione a ventilazione perfezionata

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP09004438.9A Division EP2088377B1 (fr) 2006-07-27 2007-07-26 Amélioration dans l'agencement de ventilation d'une hotte d'extraction de fumée
EP09004438.9A Division-Into EP2088377B1 (fr) 2006-07-27 2007-07-26 Amélioration dans l'agencement de ventilation d'une hotte d'extraction de fumée

Publications (3)

Publication Number Publication Date
EP1887286A2 EP1887286A2 (fr) 2008-02-13
EP1887286A3 EP1887286A3 (fr) 2008-07-16
EP1887286B1 true EP1887286B1 (fr) 2014-11-19

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ID=38511360

Family Applications (2)

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EP20070113229 Not-in-force EP1887286B1 (fr) 2006-07-27 2007-07-26 Amélioration dans l'agencement de ventilation d'une hotte d'extraction de fumée
EP09004438.9A Not-in-force EP2088377B1 (fr) 2006-07-27 2007-07-26 Amélioration dans l'agencement de ventilation d'une hotte d'extraction de fumée

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP09004438.9A Not-in-force EP2088377B1 (fr) 2006-07-27 2007-07-26 Amélioration dans l'agencement de ventilation d'une hotte d'extraction de fumée

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EP (2) EP1887286B1 (fr)
IT (1) ITPN20060058A1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE549583T1 (de) * 2008-12-10 2012-03-15 Electrolux Home Prod Corp Abzugshaube
ES2427831T3 (es) * 2008-12-10 2013-11-04 Electrolux Home Products Corporation N.V. Campana de succión
EP2196738B1 (fr) * 2008-12-10 2013-10-23 Electrolux Home Products Corporation N.V. Hotte de cuisine
CN102954514B (zh) * 2011-08-27 2016-08-17 博西华电器（江苏）有限公司 抽油烟机及其龙卷风产生装置
CA3028107A1 (fr) 2016-07-07 2018-01-11 B.S. Service S.R.L. Hotte d'extracteur de cuisine a flux directionnel
IT201600071188A1 (it) * 2016-07-07 2018-01-07 B S Service S R L Cappa aspirante per cucine con flusso a vortice.
WO2018008044A1 (fr) * 2016-07-07 2018-01-11 B.S. Service S.R.L. Hotte aspirante de cuisine à écoulement tourbillonnaire
IT201600071189A1 (it) * 2016-07-07 2018-01-07 B S Service S R L Cappa aspirante per cucine con flusso direzionale.
CN106439964B (zh) * 2016-09-30 2019-11-12 宁波方太厨具有限公司 一种吸油烟机
CN106594826A (zh) * 2016-12-02 2017-04-26 宁波方太厨具有限公司 一种旋吸式吸油烟机
CN106594834B (zh) * 2016-12-23 2019-08-23 宁波方太厨具有限公司 一种吸油烟机的旋流辅助装置
CN108105824A (zh) * 2018-01-16 2018-06-01 青岛海尔智慧厨房电器有限公司 一种油烟机汲烟器及油烟机
DE102019206240A1 (de) * 2019-04-30 2020-11-05 BSH Hausgeräte GmbH Dunstabzugsvorrichtung, Küchengerät mit Kochfeld und Dunstabzugsvorrichtung und Verfahren zum Betreiben einer Dunstabzugsvorrichtung
CN112569719B (zh) * 2020-12-21 2024-07-02 玉环太平洋机械有限公司 顶吸式油雾分离净化器
KR102469350B1 (ko) * 2020-12-21 2022-11-23 주식회사 포스코 집진장치 및 집진방법

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DE3208622C1 (de) 1982-03-10 1983-12-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 8000 München Abzug zur Absaugung von Gasen,Daempfen und Schwebstoffen
JPS63267855A (ja) 1987-04-24 1988-11-04 Nippon Air Curtain Kk 人工竜巻発生機構による局所排気装置
JPH01114650A (ja) 1987-10-26 1989-05-08 Matsushita Electric Works Ltd 調理用排煙処理装置
JPH02131142A (ja) 1988-11-11 1990-05-18 Usui Internatl Ind Co Ltd 排気ガス浄化用触媒を担持するための金属製担持母体の製造法
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JPH0942734A (ja) 1995-07-24 1997-02-14 Sun Wave Ind Co Ltd 加熱機器回りの排気構造
JPH11311432A (ja) 1997-05-26 1999-11-09 Toto Ltd レンジフード
JP3327247B2 (ja) * 1999-01-14 2002-09-24 ダイキン工業株式会社 換気装置
JP4526780B2 (ja) * 2003-04-30 2010-08-18 富士夫 堀 フード装置
DE102005013806A1 (de) * 2005-03-24 2006-09-28 BSH Bosch und Siemens Hausgeräte GmbH Dunstabzugshaube

Also Published As

Publication number Publication date
ITPN20060058A1 (it) 2008-01-28
EP1887286A3 (fr) 2008-07-16
EP2088377A2 (fr) 2009-08-12
EP2088377A3 (fr) 2014-09-17
EP1887286A2 (fr) 2008-02-13
EP2088377B1 (fr) 2017-06-28

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