EP2739911B1 - Verbesserte rauchabzugseinrichtung und/oder filtrierhaube, insbesondere für eine haushaltsküche - Google Patents

Verbesserte rauchabzugseinrichtung und/oder filtrierhaube, insbesondere für eine haushaltsküche Download PDF

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Publication number
EP2739911B1
EP2739911B1 EP12762399.9A EP12762399A EP2739911B1 EP 2739911 B1 EP2739911 B1 EP 2739911B1 EP 12762399 A EP12762399 A EP 12762399A EP 2739911 B1 EP2739911 B1 EP 2739911B1
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EP
European Patent Office
Prior art keywords
hood
segment
width
plane
symmetry
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
EP12762399.9A
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English (en)
French (fr)
Other versions
EP2739911A2 (de
Inventor
Mario Biancospino
Pier Sandro CACIOPPO
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
Original Assignee
Indesit Co 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
Priority claimed from ITTO20110084 external-priority patent/ITTO20110084U1/it
Priority claimed from ITTO20110083 external-priority patent/ITTO20110083U1/it
Application filed by Indesit Co SpA filed Critical Indesit Co SpA
Priority to EP16169105.0A priority Critical patent/EP3078916B1/de
Publication of EP2739911A2 publication Critical patent/EP2739911A2/de
Application granted granted Critical
Publication of EP2739911B1 publication Critical patent/EP2739911B1/de
Not-in-force legal-status Critical Current
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 present invention relates to a fume extraction and/or filtration hood, in particular for a household kitchen.
  • Fume extraction and/or filtration hoods have become a substantially indispensable appliance in any household kitchen.
  • a hood is known to have the main purpose of allowing recycling of air saturated with cooking fumes; nevertheless, a hood may also have a very important function as an aesthetic piece of furniture in a household kitchen, and shall meet special requirements, also prescribed by law.
  • Hoods known at the state of the art are usually composed of a chimney having a hollow interior, an inlet section through which fumes flow into said chimney, a motor fan accommodated in said chimney, which is used for extraction of air into the chimney.
  • the inlet section is usually oriented horizontally or slightly inclined with respect to the base of the interiorly hollow chimney and above the cooking top, to collect as many odors and fumes generated thereby as possible.
  • Fume extraction and/or filtration hoods particularly for household kitchens, may be:
  • extractor hoods may be reconverted to also perform a filtering function, particularly by placing filters in their frame, which retain impurities (e.g. fumes, odors and grease molecules) in extracted air.
  • impurities e.g. fumes, odors and grease molecules
  • Hoods known at the state of the art have considerable drawbacks, as they generate an unpleasant noise, caused both by the noise of the motor fan, and by forced flow of extracted air through extraction conduits; usually, as extraction speed increases, a higher noise is generated by the hood.
  • hoods of the last generation are equipped with sound-absorbing protections, and has tubing and extraction conduits of special sizes and conformations.
  • hoods are formed with deflector elements, which are realized in such a way to cause the air extracted by the motor fan to follow a non-rectilinear path, in particular in the hood segment that joins the inlet conduit with the motor fan.
  • said deflector elements may include:
  • hoods known at the state of the art include a partition element having a triangular section, said partition element being located below the motor fan.
  • Document FR2911520 relates to a hood that comprises a partition element located below the motor fan, said partition element having an apex oriented toward the inlet section of the hood. Since said apex has an angle of substantially 60°, and anyway greater than 45°, it causes a number of turbulences at the area in which the air extracted by the hood and flowing in from the inlet section is separated, which involves inevitable pressure and flow losses in the hood.
  • the sharp edge of the partition element of a hood as described, for instance, in document FR2911520 also generates a number of turbulences in the air flow extracted by the motor fan, which affect the air extraction performance of the motor fan and also increase hood noise.
  • the main object of the present invention is to provide a fume extraction and/or filtration hood, in particular for a household kitchen, that is realized in such a way to obviate the drawbacks of prior art hoods and, in particular, to ensure optimized extraction of the odors and fumes generated by the cooking top with which it is associated.
  • Another object of the present invention is to provide a fume extraction and/or filtration hood, in particular for a household kitchen, that is designed to minimize noise, also irrespective of the extraction speed.
  • a further object of the present invention is to provide a fume extraction and/or filtration hood, in particular for a household kitchen, that is designed to avoid difficult and expensive manufacturing and/ or installation procedures.
  • the present invention provides a fume extraction and/or filtration hood, in particular for a household kitchen, incorporating the features set out in the appended claims, which are intended as an integral part of the present description.
  • numeral 1 generally designates a fume extraction and/or filtration hood, in particular for a household kitchen, according to the present invention.
  • Such hood 1 comprises a chimney 10 having a hollow interior and comprising lateral walls 11, a back wall 12 and a front wall; it shall be also noted that said front wall is not shown in the accompanying figures, in such a way to expose the architecture and the inner components of said hood 1.
  • hood 1 of the present invention comprises:
  • said plane of symmetry PS divides the hood 1 of the present invention into two substantially equally parts.
  • the terms "frontal”, “front” “back” and “lateral” are related to an operating state of the hood 1 of the present invention, i.e. a state in which said hood 1 is located above a cooking top (not shown in the annexed drawings) to collect as many odors and fumes generated thereby as possible, i.e. a state in which said plane of symmetry PS is substantially vertical.
  • Said motor fan 30 is located between said inlet section 20 and an outlet section 50 to extract fumes from said inlet section 20 and pull them out of the outlet section 50; in particular, said motor fan 30 is located in proximity of said outlet section 50 and comprises a centrifugal motor for extraction of air and fumes from said at least one extraction volume 40.
  • said lateral walls 11 comprise at least:
  • the first length A of each of said first 11a and second 11b segments is about 87 mm (i.e.: A ⁇ 87 mm), if an air flow of about 700-800 m 3 /h is required to be conveyed into the chimney 10.
  • said side walls 11 may comprise a third segment 11c positioned between said first segment 11a and second segment 11b, in particular said third segment 11c being substantially parallel to the plane of symmetry PS.
  • said third segment 11c may have a second length B greater than or equal to 0 mm (i.e. B ⁇ 0 mm).
  • said first length A and second length B are obtained by measuring said first segment 11a, second segment 11b and third segment 11c on a reference plane PR substantially parallel to the plane of symmetry PS.
  • first segment 11a, second segment 11b and third segment 11c of the side walls 11 create a narrowed portion 11R of the hood 1 relative to a first width L1 of the inlet section 20 of the hood 1.
  • Said narrowed portion 11R has its largest size in correspondence of the third segment 11c, wherein said narrowed portion 11R has a second width L2 that depends on the first width L1 of the inlet section 20, particularly said second width L2 ranging from 0.15 times to 0.2 times the first width L1 (i.e.: 0.15L1 ⁇ L2 ⁇ 0.2L1).
  • the second width L2 is about 0.175 times the first width L1 (i.e.: L2 ⁇ 0,175L1), if an air flow of about 700-800 m 3 /h is required to be conveyed into the chimney 10.
  • the third segment 11c is designed to have a second length B equal to 0 mm, then the second width L2 of the narrowed portion 11R is calculated substantially at the connection point of said first segment 11a and second segment 11b.
  • hood 1 of the present invention affords optimized extraction of the odors and fumes generated by a cooking top associate therewith.
  • the particular construction of the lateral walls 11 and the hood 1 of the present invention affords optimized noise suppression, also irrespective of the extraction speed of the motor fan 30. In particular, it avoids the formation of air recirculation and/ or stagnation areas in the chimney 10.
  • the construction of the hood 1 does not require difficult and expensive manufacture and/ or installation procedures.
  • a motor fan base 30 is located at a first distance D1 from an upper portion of the second segment 11b, said first distance D1 ranging from 30 mm to 70 mm (i.e. 30 mm ⁇ D1 ⁇ 70 mm).
  • said first distance D1 is about 52 mm (i.e.: D1 ⁇ 52 mm).
  • the hood 1 of the present invention also comprises a partition element 60 located between the motor fan 30 and the inlet section 20.
  • Said partition element 60 has a wedge shape, with a substantially triangular section, and is positioned in such a way that its base 61 faces toward the motor fan 30 and its apex 62 is oriented toward said inlet section 20.
  • said apex 62 lies on said plane of symmetry PS and has an angle of less than 40°, preferably less than 15°, and more preferably less than 7°.
  • the base 61 of the partition element 60 rests on the motor fan 30; nevertheless, the hood 1 may be also designed with the base 61 of the partition element 60 separate from the motor fan 30, e.g. with the interposition of an additional component (not shown) of the hood 1.
  • the base 61 of the partition element 60 is formed with a width substantially equal to a third width L3 of the motor fan 30.
  • the partition element 60 is designed with a third distance D3 between the base 61 and the apex 62, substantially equal to the sum of the first length A of the second segment 11b and the first distance D1 (i.e.: D3 ⁇ A+D1).
  • the partition element 60 comprises radiused lateral faces 63, in particular each lateral face 63 being formed with curvatures that substantially match those of the segment of the facing lateral wall 11; this construction can be particularly appreciated from Fig. 2 . This allows to obtain an optimal air path in the hood 1, both in terms of fluid dynamics and in terms of noise suppression in the hood 1.
  • said lateral faces 63 are curved with two mutually tangent curvatures.
  • said lateral faces 63 are divided into three portions:
  • the profile of the base portion of said lateral faces 63 for at least the last 2 mm is substantially orthogonal to the base 61 of the partition element 60.
  • said lateral walls 11 and/or said partition element 60 of the hood 1 may be made of a sound-absorbing material (e.g. melamine foam) or sheet metal or plastic and/ or may be associated with components (not shown) made of a sound-absorbing material (e.g. melamine foam) or sheet metal or plastic, in particular said sound-absorbing material being coated or surface-treated (e.g. by painting) with a waterproofing material.
  • a sound-absorbing material e.g. melamine foam
  • sheet metal or plastic e.g. melamine foam
  • said sound-absorbing material being coated or surface-treated (e.g. by painting) with a waterproofing material.
  • the presence of such waterproofing material allows to prevent impurities (e.g. fumes, odors or grease molecules) in the extracted air from impregnating the sound - absorbing material.
  • said sound-absorbing material may consist of a plastic polymer, such as melamine.
  • these advantages consist in that the particular construction of the hood 1 affords optimized extraction of the odors and fumes generated by a cooking top associated therewith.
  • the particular conformation of the lateral walls 11 and the partition element 60 allows to obtain an optimal fume extraction without creating any turbulence.
  • This particular construction positively minimizes the noise of the hood 1, also irrespective of the extraction speed of the motor fan 30, and without requiring difficult and expensive manufacturing and/or installation procedures.
  • hood 1 of the present invention is shown in Fig. 3 .
  • the hood 1 has a skirt 70 upstream from the chimney (with respect to the air path in the hood 1), i.e. an extractor chamber open at its bottom and having a main horizontal extension and joined to the inlet section 20 of said chimney 10.
  • the lower end of the first segment 11a is advantageously joined and radiused to the upper wall of said skirt 70 to prevent turbulences at the inlet section 20.

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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)
  • Filtering Of Dispersed Particles In Gases (AREA)

Claims (15)

  1. Dunstabzug- und/ oder Dunstfilterhaube (1), insbesondere für Haushaltsküchen, umfassend:
    - einen Schlot (10), welcher einen hohlen Innenbereich aufweist und seitliche Wände (11), eine Rückwand (12) und eine Vorderwand umfasst;
    - einen Einlassabschnitt (20), durch welchen Dünste in den Schlot (10) strömen;
    - einen Motorventilator (30), welcher in dem Schlot (10), entgegengesetzt zu dem Einlassabschnitt (20), aufgenommen ist;
    - ein Abzugraum (40), welcher zwischen den seitlichen Wänden (11) und dem Motorventilator (30) platziert ist,
    wobei die seitlichen Wände (11) und der Abzugraum (40) im Wesentlichen symmetrisch in Bezug auf eine gemeinsame Symmetrieebene (PS) sind,
    wobei die seitlichen Wände (11) wenigstens umfassen:
    - ein erstes Segment (11a), welches benachbart zu dem Einlassabschnitt (20) gelegen ist und in Richtung der gemeinsamen Symmetrieebene (PS) geneigt ist;
    - ein zweites Segment (11b), welches in einer entgegengesetzten Richtung in Bezug auf diese Symmetrieebene (PS) geneigt ist,
    wobei die Haube (1) dadurch gekennzeichnet ist, dass das erste Segment (11a) und das zweite Segment (11 b) mit gerundeten Flächen ausgebildet sind, wobei jedes Segment eine erste Länge (A) aufweist, die durch Messen des Segments in einer Referenzebene (PR), im Wesentlichen parallel zu der Symmetrieebene (PS), erhalten wird, wobei die erste Länge (A) in einem Bereich von 70 mm bis 110 mm liegt.
  2. Haube (1) nach Anspruch 1, dadurch gekennzeichnet, dass die erste Länge (A) sowohl von dem ersten Segment (11a), als auch von dem zweiten Segment (11b) ungefähr 87 mm ist, um einen Luftstrom von ungefähr 700-800 m3/h in den Schlot (10) abzuleiten.
  3. Haube (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das erste Segment (11a) in Richtung der Symmetrieebene (PS) konvergiert und das zweite Segment (11b) von der Symmetrieebene (PS) divergiert, wobei der obere Teilbereich von dem zweiten Segment (11b) vorteilhaft mit der seitlichen Wand (11) der Haube (1) verbunden ist, oder mit der seitlichen Wand (11) der Haube (1) gerundet verbunden ist.
  4. Haube (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die seitlichen Wände (11) ein drittes Segment (11c) umfassen, das zwischen dem ersten Segment (11a) und dem zweiten Segment (11b) positioniert ist, wobei insbesondere das dritte Segment (11c) im Wesentlichen parallel zu der Symmetrieebene (PS) ist und eine zweite Länge (B) aufweist, die 0 mm oder größer als 0 mm ist.
  5. Haube (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das erste Segment (11a), das zweite Segment (11b) und das dritte Segment (11c) der seitlichen Wände (11) einen verengten Teilbereich (11 R) der Haube (1) bezüglich einer ersten Breite (L1) des Einlassabschnitts (20) der Haube (1) erzeugen.
  6. Haube (1) nach Anspruch 5, dadurch gekennzeichnet, dass der verengte Teilbereich (11 R) seine maximale Größe in Übereinstimmung mit dem dritten Segment (11 c) aufweist, wobei der verengte Teilbereich (11 R) eine zweite Breite (L2) aufweist, die von der ersten Breite (L1) des Einlassabschnitts (20) abhängt, wobei insbesondere die zweite Breite (L2) in einem Bereich von dem 0,15-fachen bis zu dem 0,2-fachen der ersten Breite (L1) liegt und vorzugsweise die zweite Breite (L2) ungefähr das 0,175-fache der ersten Breite (L1) ist, um einen Luftstrom von ungefähr 700-800 m3/h in den Schlot (10) abzuleiten.
  7. Haube (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie ein Trennelement (60) umfasst, welches zwischen dem Motorventilator (30) und dem Einlassabschnitt (20) gelegen ist.
  8. Haube (1) nach Anspruch 7, dadurch gekennzeichnet, dass das Trennelement (60) eine Keilform aufweist, mit einem im Wesentlichen dreieckigen Abschnitt, und derart positioniert ist, dass seine Basis (61) dem Motorventilator (30) zugewandt ist und sein Scheitel (62) in Richtung des Einlassabschnittes (20) orientiert ist.
  9. Haube (1) nach Anspruch 8, dadurch gekennzeichnet, dass der Scheitel (62) auf der Symmetrieebene (PS) liegt und einen Winkel von weniger als 40°, vorzugsweise weniger als 15° und besonders bevorzugt weniger als 7°, aufweist.
  10. Haube (1) nach Anspruch 8, dadurch gekennzeichnet, dass die Basis (61) des Trennelements (60) mit einer Breite ausgebildet ist, die im Wesentlichen einer dritten Breite (L3) des Motorventilators (30) entspricht.
  11. Haube (1) nach einem der Ansprüche 7 bis 10, dadurch gekennzeichnet, dass das Trennelement (60) gerundete seitliche Oberflächen (63) aufweist.
  12. Haube (1) nach Anspruch 11, dadurch gekennzeichnet, dass jede seitliche Oberfläche (63) derart ausgeführt ist, dass sie Krümmungen aufweist, die im Wesentlichen mit denen des Segments der zugewandten seitlichen Wand (11) übereinstimmen.
  13. Haube (1) nach einem der Ansprüche 11 und 12, dadurch gekennzeichnet, dass die seitlichen Oberflächen (63) mit zwei gegenseitig tangentialen Krümmungen gekrümmt sind.
  14. Haube (1) nach einem der Ansprüche 12 und 13, dadurch gekennzeichnet, dass die seitlichen Oberflächen (63) umfassen:
    - einen Scheitelteilbereich, welcher einen gekrümmten Verlauf mit einem Winkel aufweist, welcher von dem Scheitel (62) zu der Basis (61) zunimmt;
    - einen zwischenliegenden Teilbereich, welcher einen im Wesentlichen geradlinigen Verlauf aufweist;
    - einen Basisteilbereich, welcher einen gekrümmten Verlauf mit einem Winkel aufweist, der von dem Scheitel (62) zu der Basis (61) abnimmt, wobei vorzugsweise das Profil des Basisteilbereichs der seitlichen Oberflächen (63) für wenigstens die letzten 2 mm im Wesentlichen orthogonal zu der Basis (61) des Trennelements (60) ist.
  15. Haube (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie eine dem Schlot (10) vorgeschaltete Einfassung (70) umfasst, wobei das untere Ende des ersten Segments (11a) mit der oberen Wand von der Einfassung (70) verbunden ist und mit dieser gerundet verbunden ist, um Turbulenzen an dem Einlassabschnitt (20) zu verhindern.
EP12762399.9A 2011-08-04 2012-08-03 Verbesserte rauchabzugseinrichtung und/oder filtrierhaube, insbesondere für eine haushaltsküche Not-in-force EP2739911B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP16169105.0A EP3078916B1 (de) 2011-08-04 2012-08-03 Verbesserte rauchabzugseinrichtung und/oder filtrierhaube, insbesondere für eine haushaltsküche

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ITTO20110084 ITTO20110084U1 (it) 2011-08-04 2011-08-04 Cappa per l'aspirazione e/o la filtrazione di fumi, in particolare per una cucina domestica, di tipologia migliorata
ITTO20110083 ITTO20110083U1 (it) 2011-08-04 2011-08-04 Cappa per l'aspirazione e/o la filtrazione di fumi, in particolare per una cucina domestica, di tipologia migliorata
PCT/IB2012/053976 WO2013018063A2 (en) 2011-08-04 2012-08-03 Fume extraction and/or filtration hood of improved type, particularly for a household kitchen

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP16169105.0A Division EP3078916B1 (de) 2011-08-04 2012-08-03 Verbesserte rauchabzugseinrichtung und/oder filtrierhaube, insbesondere für eine haushaltsküche
EP16169105.0A Division-Into EP3078916B1 (de) 2011-08-04 2012-08-03 Verbesserte rauchabzugseinrichtung und/oder filtrierhaube, insbesondere für eine haushaltsküche

Publications (2)

Publication Number Publication Date
EP2739911A2 EP2739911A2 (de) 2014-06-11
EP2739911B1 true EP2739911B1 (de) 2016-07-06

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Application Number Title Priority Date Filing Date
EP16169105.0A Not-in-force EP3078916B1 (de) 2011-08-04 2012-08-03 Verbesserte rauchabzugseinrichtung und/oder filtrierhaube, insbesondere für eine haushaltsküche
EP12762399.9A Not-in-force EP2739911B1 (de) 2011-08-04 2012-08-03 Verbesserte rauchabzugseinrichtung und/oder filtrierhaube, insbesondere für eine haushaltsküche

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EP16169105.0A Not-in-force EP3078916B1 (de) 2011-08-04 2012-08-03 Verbesserte rauchabzugseinrichtung und/oder filtrierhaube, insbesondere für eine haushaltsküche

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EP (2) EP3078916B1 (de)
WO (1) WO2013018063A2 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104566568A (zh) * 2013-10-16 2015-04-29 博西华电器（江苏）有限公司 抽油烟机
EP3614053B1 (de) * 2018-06-08 2021-05-26 BSH Hausgeräte GmbH Dunstabzugsvorrichtung und kombinationsgerät mit dunstabzugsvorrichtung und kochfeld
TR201821018A2 (tr) * 2018-12-28 2019-02-21 Femas Metal Sanayi Ve Ticaret Anonim Sirketi Yeni bir davlumbaz gövdesi

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE459324B (sv) * 1987-10-13 1989-06-26 Hedesunda Plast & Metall Suganordning vid kaapor
US5983888A (en) * 1999-04-07 1999-11-16 Whirlpool Corporation Low noise cooker hood
US20040194776A1 (en) * 2003-04-03 2004-10-07 Silentium Ltd. Method for reducing noise of a cooking hood and a cooking hood based on such method
DE102006029303A1 (de) * 2006-06-23 2007-12-27 Langner, Manfred H. Filtervorrichtung für Dunstabzugshauben, Ablufthauben, Umlufthauben oder dergleichen
FR2911520B1 (fr) * 2007-01-19 2009-08-28 Roblin Sas Soc Par Actions Sim Hotte aspirante pour cuisine
DE102009027170A1 (de) * 2009-06-24 2010-12-30 BSH Bosch und Siemens Hausgeräte GmbH Externes Gebläse für Dunstabzugsvorrichtung
ITAN20120079U1 (it) * 2011-11-21 2013-05-22 Sipe Srl Cappa di aspirazione fumi silenziosa.

Also Published As

Publication number Publication date
WO2013018063A2 (en) 2013-02-07
EP3078916A2 (de) 2016-10-12
EP3078916A3 (de) 2017-01-11
EP3078916B1 (de) 2019-02-27
EP2739911A2 (de) 2014-06-11
WO2013018063A3 (en) 2014-05-01

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