EP0301640A1 - Dunstabzugshaube für Küchen mit grosser Gassammelfläche - Google Patents

Dunstabzugshaube für Küchen mit grosser Gassammelfläche Download PDF

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Publication number
EP0301640A1
EP0301640A1 EP88201531A EP88201531A EP0301640A1 EP 0301640 A1 EP0301640 A1 EP 0301640A1 EP 88201531 A EP88201531 A EP 88201531A EP 88201531 A EP88201531 A EP 88201531A EP 0301640 A1 EP0301640 A1 EP 0301640A1
Authority
EP
European Patent Office
Prior art keywords
guide shell
fumes
hood
suction
suction opening
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.)
Withdrawn
Application number
EP88201531A
Other languages
English (en)
French (fr)
Inventor
Urbano Urbani
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.)
Elica SpA
Original Assignee
Elica SpA
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 Elica SpA filed Critical Elica SpA
Publication of EP0301640A1 publication Critical patent/EP0301640A1/de
Withdrawn legal-status Critical Current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 subject of the present invention is a suction hood for fumes, especially for domestic kitchens.
  • vapours are generated during the cooking of food, which vapours frequently carry with them greasy and aromatic substances, arising from the foods that have been raised to high temperature.
  • Devices are therefore used for collecting said emissions, hereinafter termed for short “fumes", which for domestic kitchens are usually composed of a hood mounted above the cookers or stoves from which the fumes are emitted, the hood being equipped with an electrical extraction fan and conducting the sucked air, containing the fumes, to a duct for discharging the fumes to the outdoors, or leading to a recirculation opening for feeding the sucked air back into the room, in this second case means being provided for filtering the fumes contained in the recycled air.
  • the extraction fan is composed of a centrifugal fan, with its suction opening facing towards the collection opening of the hood, which fan is connected by its discharge opening to the one or the other outlet of the hood itself.
  • the problem therefore arises of providing a hood, which shall enable an optimum distribution of the suction flows over the entire desired collec­tion area to be achieved, preventing the fumes from escaping into the surrounding air, and furthermore assuring especially silent operation.
  • the present invention provides a suc­tion hood for fumes, especially for domestic kitchens, which possesses a centrifugal rotor having a vertical axis, closed at the bottom, keyed to the shaft of a motor supported with its axis vertical inside a suction opening present in the upwardly facing wall of a spiral guide shell of increasing cross-section, leading to a discharge duct and/or to a recircu­lation grating, which guide shell possesses a closed bottom wall, situated above the bottom wall, having openings and facing the collection area of the hood of an external casing which encloses and supports the guide shell , and defines, above the guide shell itself, a zone communicating with its suction opening, there being also present a dis­charge duct equipped with sound absorption means.
  • the guide shell is supported inside the external casing by antivibration supports.
  • the zone of the external casing communicating with the suction opening of the guide shell is separated from the remaining part of the internal volume of the casing, communicating with its bottom wall having apertures, there being present access apertures to the zone communicating with the suction opening of the guide shell.
  • the access apertures to the zone communicating with the suction opening of the guide shell are situated near the lateral walls of the guide shell, extending substantially throughout the entire length of the lateral walls themselves, said access apertures to the suction opening of the guide shell being substantially opposite the corresponding lateral zones of the bottom wall, having apertures, of the external casing.
  • the access apertures to the zone communicating with the suction opening of the guide shell may be equipped with replaceable carbon filter elements, sealing gaskets being provided which occlude the passage outside the carbon filter elements.
  • the bottom wall, having apertures, of the external casing is formed as a grating and is equipped, over its entire extent, with a filter mattress, adapted for retaining liquid or solid particles entrained by the sucked air, with limited loss of head, said filter mattress being traversed in a sub­stantially uniform manner by the sucked air over its entire area.
  • the discharge duct is equipped with a perforated inner wall and a closed outer wall, defining an annular volume containing sound-absorbing foam material, and extends through a distance at the outlet of the guide shell, being then connected to a duct leading the sucked air outdoors.
  • figure 1 the hood according to this invention, in section on the plane I-I of figure 3; in figure 2, a section on the plane II-II of figure 3; in figure 3, a section on the plane III-III of figure 2.
  • the hood according to this invention is composed of an external casing 1, equipped at the bottom with a grating 2 and a filter mattress 3, extending over the entire collection area of the hood, inside which casing there is a suction unit, comprising a spiral guide shell 4 and a centrifugal rotor 5, closed at the bottom and open at the top, keyed to the shaft of an electric motor 6, with vertical axis, the motor being dis­posed inside the rotor and supported in its upper part by means of a con­nector 7 suspended from radial spokes 8 at the centre of the upper circular aperture 9 of the guide shell 4.
  • a suction unit comprising a spiral guide shell 4 and a centrifugal rotor 5, closed at the bottom and open at the top, keyed to the shaft of an electric motor 6, with vertical axis, the motor being dis­posed inside the rotor and supported in its upper part by means of a con­nector 7 suspended from radial spokes 8 at the centre of the upper circular aperture 9 of the guide shell 4.
  • the guide shell 4 is supported inside the casing 1 at its upper wall 10 by means of antivibration supports 11 and possesses a spiral lateral wall 12, leading to a vertical discharge duct 13 in the rear part of the casing 1 and to a front recycling grating 14.
  • the guide shell 4 In its lateral zones, the guide shell 4 has the seatings for mounting the carbon filter blocks 17, which face the apertures 18, bounded by sealing gaskets 19, which apertures communicate with the space 20 contained between the upper wall 21 of the guide shell 4 and the upper wall 10 of the external casing 1.
  • the filter blocks 17 may be omitted.
  • Rotation of the rotor 5 causes a flow of air, which generates a suction in­side the space 20 and in the lower zone 22 of the casing 1, thereby causing a suction of air through the filter mattress 3, adapted for retaining liquid or solid particules entrained by the extracted air and, if they are present, also through the filter blocks 17, adapted for retaining the odours of the fumes, and thus causing an expulsion of the extracted air through the grating 14 or the duct 13.
  • the flow of air drawn in from outside affects in a substantially uniform manner the entire area of the filter mattress 3, with a slight predominance for its lateral zones 3a, as shown by the arrows F in figure 1, the density of which is greater in the zones of higher suction velocity.
  • the structure according to this invention also allows the entire guide shell 4 and the motor attached to it to be supported by means of antivibration bearings 11, thereby substantially reducing the operating noise of the extraction hood.
  • the hood according to this invention also enables carbon filter blocks 17 of large dimensions to be used, thereby obtaining a smaller loss of pressure of the air passing through them and a longer life of the filters.
  • the quietness of operation of the hood is ensured, in addition to what has been described above, also by the arrangement of the discharge duct 13, which has a perforated inner wall 23, connected to the outlet opening 24 of the guide shell 4, and a coaxial, outer wall 25, with a filling in the annular space between the two walls 23, 25 of an expanded material 26, having sound-absorbing properties.
  • the duct 13 constructed in this manner, extends vertically through the height available in the item of furniture in which the hood is mounted, for example through a height h of some tens of centimetres, and constitutes the support and fixing base for the conventional duct leading the extracted fumes out of doors, not shown in the figure.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ventilation (AREA)
EP88201531A 1987-07-27 1988-07-15 Dunstabzugshaube für Küchen mit grosser Gassammelfläche Withdrawn EP0301640A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT21452/87A IT1222139B (it) 1987-07-27 1987-07-27 Cappa di aspirazione fumi,particolarmente per cucine domestiche,a larga aerea di captazione
IT2145287 1987-07-27

Publications (1)

Publication Number Publication Date
EP0301640A1 true EP0301640A1 (de) 1989-02-01

Family

ID=11181984

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88201531A Withdrawn EP0301640A1 (de) 1987-07-27 1988-07-15 Dunstabzugshaube für Küchen mit grosser Gassammelfläche

Country Status (2)

Country Link
EP (1) EP0301640A1 (de)
IT (1) IT1222139B (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0559080A1 (de) * 1992-03-04 1993-09-08 RATIONAL GmbH Vorrichtung zum Abführen einer Gaskomponente
EP0640798A1 (de) * 1993-08-10 1995-03-01 SCHACHT, Paul Absaugvorrichtung
WO2006081884A1 (de) * 2005-01-31 2006-08-10 BSH Bosch und Siemens Hausgeräte GmbH Küchendunstabzugsvorrichtung
CN102620332A (zh) * 2011-01-30 2012-08-01 博西华电器（江苏）有限公司 一种抽油烟机及其制造方法
CN104676698A (zh) * 2015-03-26 2015-06-03 迅达科技集团股份有限公司 一种吸油烟机的蜗壳
DE102015213471A1 (de) * 2015-07-17 2017-01-19 Wilhelm Bruckbauer Lüfterbaustein
ITUB20154759A1 (it) * 2015-11-02 2017-05-02 Falmec S P A Cappa filtrante con filtri affacciati alla girante
CN110440321A (zh) * 2019-07-16 2019-11-12 林庆森 烟道油脂分离器及其吸油烟机

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1290517A (fr) * 1961-05-10 1962-04-13 Elm Works Ltd Appareil de purification de l'air
DE6900973U (de) * 1969-01-10 1969-05-29 Gaggenau Eisenwerk Dunstabzugsbaube
FR2077027A5 (de) * 1970-01-30 1971-10-15 Bergmark Nils
FR2346643A1 (fr) * 1976-03-31 1977-10-28 Bosch Siemens Hausgeraete Appareil epurateur d'air, en particulier hotte d'evacuation des fumees et buees, a installer au-dessus de cuisinieres et d'appareils analogues

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1290517A (fr) * 1961-05-10 1962-04-13 Elm Works Ltd Appareil de purification de l'air
DE6900973U (de) * 1969-01-10 1969-05-29 Gaggenau Eisenwerk Dunstabzugsbaube
FR2077027A5 (de) * 1970-01-30 1971-10-15 Bergmark Nils
FR2346643A1 (fr) * 1976-03-31 1977-10-28 Bosch Siemens Hausgeraete Appareil epurateur d'air, en particulier hotte d'evacuation des fumees et buees, a installer au-dessus de cuisinieres et d'appareils analogues

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0559080A1 (de) * 1992-03-04 1993-09-08 RATIONAL GmbH Vorrichtung zum Abführen einer Gaskomponente
EP0640798A1 (de) * 1993-08-10 1995-03-01 SCHACHT, Paul Absaugvorrichtung
WO2006081884A1 (de) * 2005-01-31 2006-08-10 BSH Bosch und Siemens Hausgeräte GmbH Küchendunstabzugsvorrichtung
CN102620332A (zh) * 2011-01-30 2012-08-01 博西华电器（江苏）有限公司 一种抽油烟机及其制造方法
CN102620332B (zh) * 2011-01-30 2016-03-09 博西华电器（江苏）有限公司 一种抽油烟机及其制造方法
CN104676698A (zh) * 2015-03-26 2015-06-03 迅达科技集团股份有限公司 一种吸油烟机的蜗壳
DE102015213471A1 (de) * 2015-07-17 2017-01-19 Wilhelm Bruckbauer Lüfterbaustein
DE102015213471B4 (de) 2015-07-17 2021-11-11 Wilhelm Bruckbauer Lüfterbaustein
ITUB20154759A1 (it) * 2015-11-02 2017-05-02 Falmec S P A Cappa filtrante con filtri affacciati alla girante
EP3163175A1 (de) * 2015-11-02 2017-05-03 Falmec S.P.A. Filterhaube mit dem lüfter zugewandten filter
CN110440321A (zh) * 2019-07-16 2019-11-12 林庆森 烟道油脂分离器及其吸油烟机

Also Published As

Publication number Publication date
IT8721452A0 (it) 1987-07-27
IT1222139B (it) 1990-09-05

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