EP4390236A1 - Dispositif d'extraction - Google Patents

Dispositif d'extraction Download PDF

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Publication number
EP4390236A1
EP4390236A1 EP22215860.2A EP22215860A EP4390236A1 EP 4390236 A1 EP4390236 A1 EP 4390236A1 EP 22215860 A EP22215860 A EP 22215860A EP 4390236 A1 EP4390236 A1 EP 4390236A1
Authority
EP
European Patent Office
Prior art keywords
component
cover element
inlet opening
edge
extraction device
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.)
Pending
Application number
EP22215860.2A
Other languages
German (de)
English (en)
Inventor
Stefan Bayerlein
Björn Leyh
Eduardo PUOTI
Valerio PALLANTE
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.)
Electrolux Appliances AB
Original Assignee
Electrolux Appliances AB
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 Electrolux Appliances AB filed Critical Electrolux Appliances AB
Priority to EP22215860.2A priority Critical patent/EP4390236A1/fr
Publication of EP4390236A1 publication Critical patent/EP4390236A1/fr
Pending 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
    • F24C15/2042—Devices for removing cooking fumes structurally associated with a cooking range e.g. downdraft

Definitions

  • an arrangement of an extraction device is common. Said extraction device is operated in parallel to the cooking hob, thereby sucking in those kitchen vapours in order to filter out particles and tiny droplets from the vapours and/or to blow the vapours to the outside of the building. While it has been common to arrange such an extractor hood above the cooking area, in recent years downdraft extraction devices have been finding a growing market.
  • Such kind of extraction device is usually arranged below a worktop of the related cooking hob, and it comprises at least one fan for sucking air from the cooking area through an opening or recess arranged in the worktop.
  • Such a downdraft extraction device further comprises a cover element arranged at the inlet opening or recess of the extraction device. It is known, that the arrangement of the cover element at the inlet opening or recess is guided by an alignment means. Such alignment means is specifically the interaction between an outer circumferential edge of the cover element and an inner edge of the inlet opening or recess. Due to tolerances in production line, the arrangement of the cover element at the inlet opening or recess is not free of play and this may cause vibration noises, particularly when the extraction device extracts cooking fumes from induction cooking hobs and the inlet opening is included in a cut-out of a cooking plate of said induction cooking hob.
  • a further object of the present invention is to improve the overall aesthetic design of the surface of the cooking hob.
  • An extraction device for removing air from an area above a cooking hob comprises an inlet opening for an intake of the air into an interior of the extraction device, a cover element, which is arranged at the inlet opening, and at least one alignment means.
  • the alignment means comprises at least a first component for centring the cover element with the inlet opening, wherein the at least first component is arranged, continuously or discontinuously, at or next to a rim or edge of the inlet opening and/or a rim or edge of the cover element.
  • centring with may be understood, that there is an alignment of the cover element with the inlet opening, so that the gap distance between the cover element and the inlet opening is circumferentially the same.
  • the air removed is particularly heated air and the air may comprise cooking vapours.
  • the extraction device is particularly an extraction hood for the extraction of cooking vapours.
  • the extraction device is preferably configured to form a combination appliance in combination with the cooking hob, the extraction device specifically being arranged below the cooking hob.
  • the inlet opening or recess is preferably positioned at a central position of the cooking hob, and may be designed in a round or rectangular or square shape.
  • the cover element is preferably partially or completely covering the inlet opening or recess, and the shape of the cover element may be complementary to the shape of the inlet opening or recess.
  • the cover element is preferably a lid or a grid.
  • the alignment means is configured to guide the placement of the cover element in at least two different directions, preferably in relation to a reference plane of a top surface of the cooking hob, wherein a first direction is orthogonal to a second direction, and wherein preferably the alignment means is configured to guide the placement of the cover element additionally in a third direction, with the third direction specifically providing for a flush installation of the top surface of the cover element with the top surface of the cooking hob.
  • Said flush installation provides for an aesthetical design of the cooking hob by conferring a smooth top surface.
  • the third direction is preferably related to a translational movement, which the cover element may perform, preferably orthogonally to a reference of the cooking hob and/or the top surface of the cooking hob.
  • the alignment means may comprise at least one bevelled edge or inclined surface, preferably a chamfer, wherein the at least one bevelled edge or inclined surface is configured for guiding the insertion of the cover element in the inlet opening, at least in one direction.
  • the first component comprises two elevations, which enclose a groove or a recess, wherein the at least one bevelled edge or inclined surface is preferably arranged between the two elevations, in particular at the groove or the recess.
  • the alignment means comprises a second component for centring the cover element with the inlet opening, wherein the second component is arranged, continuously or discontinuously, at or next to the rim or edge of the inlet opening and/or at the rim or edge of the cover element, and/or at a distance from the first component.
  • the second component has similar or the same characteristics, such as shape and/or function, as the first component.
  • the second component provides further stabilization of the cover element arranged at the inlet opening or recess.
  • the alignment means comprises a third component, which preferably is or comprises a tongue or a protrusion element, for centring the cover element with the inlet opening, wherein the first component and/or the second component is arranged at or next to the rim or edge of the inlet opening, and wherein the third component is arranged, continuously or discontinuously, at or next to the rim or edge of the cover element.
  • the first component and/or the second component is arranged at or next to the rim or edge of the cover element, and the third component is arranged, continuously or discontinuously, at or next to the rim or edge of the inlet opening.
  • the third component further improves the alignment of the cover element arranged at the inlet opening or recess.
  • the third component is configured to be inserted into the groove or recess by sliding along the at least one bevelled edge or inclined surface between the two elevations, thereby promoting a targeted insertion of the cover element.
  • the third component may be configured to adjust the installation height of the cover element within the inlet opening, preferably by adjusting the top surface of the cover element flush with the top surface of the cooking hob, so that the third component assures a smooth design and/or working surface of the cooking hob.
  • a particularly specific embodiment is characterized in that the first component or the second component or the third component is arranged at the rim or edge of the cover element and comprises at least one lateral tongue or protrusion configured for being inserted in a groove or a recess of the rim or edge of the inlet opening, or in that the first component or the second component or the third component is arranged at the rim or edge of the inlet opening and comprises at least one lateral tongue or protrusion configured for being inserted in a groove or a recess of the rim or edge of the cover element.
  • the first component or the second component or the third component is arranged at the rim or edge of the cover element and comprises at least one lateral groove or recess configured for receiving a lateral edge of a tongue or protrusion of the rim or edge of the inlet opening.
  • first component or the second component or the third component is arranged at the rim or edge of the inlet opening and comprises at least one lateral groove or recess configured for receiving a lateral edge of a tongue or protrusion of the rim or edge of the cover element.
  • said tongue or protrusion interacts with the groove or recess, which may improve the alignment of the cover element.
  • the first component and/or the second component and/or the third component is or are configured to guide the installation of the cover element into the inlet opening in such a way that a misplacement of the cover element is prevented.
  • first component, the second component and the third component have each different shapes, which assure the placement of the cover element at the inlet opening or recess in a particular orientation.
  • a preferred embodiment of the invention provides that the first component and/or the second component and/or the third component is made of an elastic material, preferably made of rubber, wherein the elastic material is deformable in at least one direction.
  • the elastic material confers flexibility in the manufacturing of the size of the cover element and/or the size of the inlet opening or recess.
  • the elastic material of the first component and/or the second component and/or the third component is configured for providing an exact positioning of the cover element in or in relation to the inlet opening, by centring the cover element in at least one direction, preferably in relation to a reference plane of a top surface of the cooking hob, and wherein the top surface of the cover element is in particular flush with the top surface of the cooking hob.
  • the elastic material assures the arrangement of the cover element at the inlet opening or recess free of play, which therefore reduces vibration noises.
  • Particularly such flexible design of at least one of the first, the second and third component can be set against the aspect of tolerances, i. e. it can compensate any tolerances of the cover element or the inlet opening or recess. More specifically, with such flexible design of at least one of the first, second and third components a larger dimensioning of these components is enabled, wherein due to the elastic material the respective component specifically gives way to an adjacent element, e.g. by an offset movement, during the insertion of the cover element.
  • a specific embodiment of the present invention is characterized in that the first component of the alignment means of the extraction device comprises at least one bevelled edge or inclined surface, wherein the first component and the second component are arranged at the rim or edge of the inlet opening, and the third component is arranged at the rim or edge of the cover element, wherein the first component and/or the second component and/or the third component is made of elastic material, wherein the alignment means is configured to centre the cover element with the inlet opening for providing an exact positioning of the cover element in relation to the inlet opening, wherein the top surface of the cover element is preferably flush with the top surface of the cooking hob.
  • the flush installation is particularly determined by the height and thickness of the third component and/or the thickness of the cover element.
  • This embodiment and/or constellation improves the aesthetic of the cooking hob and reduces the vibration noises.
  • a combination appliance which comprises a cooking hob with at least one cooking zone and an extraction device as herein disclosed.
  • Fig. 1 illustrates a general setup of a combination appliance 10 comprising a cooking hob 12 and a downdraft extraction device 14 installed in a kitchen cabinet 16.
  • the combination appliance 10 illustrated in Figs. 1 and 2 presents a structure of a combination appliance 10 according to a first example.
  • the combination appliance 10 is implemented in a cut-out of a kitchen countertop 18 forming a top cover plate of the kitchen cabinet 16.
  • the downdraft extraction device 14 is configured to take away cooking vapours occurring during cooking processes, in particular when cooking with uncovered cookware.
  • the cooking hob 12 comprises cooking regions 20a, 20b arranged on a left half and a right half of a cooktop 22 of the cooking hob 12, which left and right halves are separated from each other by an inlet opening 24 for an intake of the cooking vapours, the inlet opening 24 being arranged alongside a cooktop centreline.
  • the inlet opening 24 is covered by a cover grid 26 for preventing items, e. g. cookware, to fall into the inlet opening 24.
  • a lid may be used for entirely covering the inlet opening 24 when the extraction device 14 is out of use, but for the operation of the extraction device 14 the lid is pivotable into an upright open position.
  • a housing 28 of the extraction device 14 is shown in Fig. 1 in transparent illustration.
  • Said housing 28 provides a closed outer shell or first channel segment for a flow of the sucked-in cooking vapours on their way from the inlet opening 24 to an exhaust opening 30 in a base area 32 of the kitchen cabinet 16.
  • Said exhaust opening 30 is also covered, namely by an outlet grille 34.
  • the flow of the sucked-in cooking vapours through the extraction device 14 is driven by the operation of an extraction fan 36 arranged inside of the housing 28.
  • Said extraction fan 36 comprises a bottom-sided intake opening 38 for sucking the cooking vapours from the interior space of the housing 28.
  • a rear-sided fan outlet is arranged for a horizontal exit of the air blown out backwards from the extraction fan housing 42.
  • the fan outlet is connected to a first end of an air duct 44 designed as a rectangular tube and forms a second channel arranged downstream the above-mentioned first channel segment.
  • an air duct bending by 90 degrees is implemented, which redirects the air flow from horizontal to vertical downwards.
  • the air duct 44 may be guided alongside a rear side of the kitchen cabinet 16 and may be bent again by 90 degrees close to a rear lower edge of the kitchen cabinet 16 in order to direct the airflow towards exhaust opening 30 in the base area 32 of the kitchen cabinet 16. Accordingly, the second end of the air duct 44 is connected to the exhaust opening 30.
  • the embodiment illustrated in Fig. 1 shows a solution of the air duct 44 with an inclined section of its downwardly directed portion, directed slightly to the right. Naturally, a solution with said portion arranged in an exact vertical direction is considerable as well.
  • a filter assembly 48 which is arranged downstream directly behind the inlet opening 24 for providing a purification of the conveyed air.
  • Said filter assembly 48 includes a filter carrier 50 supporting a filter element (not shown) that is usually configured for filtering out grease particles and droplets.
  • the cross-sectional view of Fig. 2 further shows two power boards 54, one for the left cooking region 20a and one for the right cooking region 20b, the power boards 54 providing cooking zones in the left and right cooking regions 20a, 20b with electrical power.
  • the cooking hob 12 is an induction cooking hob and the cooking zones are defined by induction coils (not shown) that are arranged below the cooktop 22 of the cooking hob 12. Attached to the bottom side of the power board 54 assigned to the right cooking region 20b, a further circuit board is arranged forming a control electronics 56 for the combination appliance 10.
  • said cover grid 26 is configured to be arranged in a centred alignment with the inlet opening 24, with the result of uniform circumferential gap distances.
  • alignment means are included in the area of the inlet opening 24 of the combination appliance 10.
  • Fig. 3 illustrates an air channel carrier 58 isolated from the extraction device 14, which air channel carrier 58 defines the inlet opening 24 of the extraction device 14. More specifically, the air channel carrier 58 is formed as a frame enclosing the inlet opening 24. In its fitted state, the air channel carrier 58 is configured to be implemented in a cut-out of the cooktop 22, particularly made of glass-ceramics material, of the cooking hob 12, therein interacting with or forming a part of the previously described first channel segment.
  • the perspective illustration according to Fig. 3 shows a first alignment guide 60 in a first corner of the rectangular inlet opening 24, wherein the first alignment guide 60 is positioned on a terrace-shaped load-bearing step 62 configured for supporting a first shorter lateral edge of the cover grid 26.
  • the air channel carrier 58 further comprises a second alignment guide 60' in a second corner of the rectangular inlet opening 24, which first and second corners are arranged diagonally opposite each other. Also the second alignment guide 60' is positioned on a terrace-shaped load-bearing step 62' configured for supporting the second shorter lateral edge of the cover grid 26. With said supporting of the cover grid 26 at its two shorter lateral edges, the cover grid 26 is entirely supported within the inlet opening 24, wherein the different dimensions of both cover grid 26 and air channel carrier 58 are defined in such a way that the top side of the cover grid 26 is flush with the top side of the cooktop 22.
  • Fig. 5 illustrates an enlarged detail view of the air channel carrier 58, as indicated by "V" in Fig. 3 .
  • first and second alignment guides 60, 60' comprise a first elevation 64a and a second elevation 64b, which are arranged on the load-bearing step 62.
  • the first and second elevations 64a, 64b may be formed in one piece, e. g. by injection moulding, with the load-bearing step 62.
  • the first elevation 64a While the second elevation 64b is directly placed in the corner of the inlet opening 24, the first elevation 64a is positioned with a distance to the second elevation 64b, moved towards the central point of the load-bearing step 62. By positioning the first elevation 64a with a distance to the second elevation 64b, a recess 66 is interposed therebetween. Said recess 66 is determined to receive a mating piece arranged at the cover grid 26, which mating piece will be explained in more detail further down below.
  • the recess 66 is designed by being enclosed on three sides, namely laterally by respective side walls 70a, 70b of the first and second elevations 64a, 64b, and on the rear side by a section of the inner wall 58a of the air channel carrier 58 or, as shown in Fig. 5 , by a front wall 68 attached to said section of the inner wall 58a.
  • the dimensioning of the front wall 68 defines the gap distance between the cover grid 26 and the inlet opening 24 in interaction with the respective dimensions of the afore-mentioned mating piece.
  • At least one of the side walls of the first and second elevations 64a, 64b and/or said front wall 68 may comprise an inclined surface, which may be formed as a chamfer. Said at least one inclined surface or chamfer may be adapted to facilitate the insertion of the cover grid 26, hence forming an insertion aid. Preferably, an all-sided chamfering is provided.
  • the centring of the cover element with the inlet opening is provided, on the one hand, by an interaction between the first and second alignment guides 60, 60', more specifically by the recesses 66 arranged between the first and second elevations 64a, 64b of each one of the first and second alignment guides 60, 60', and, on the other hand, an allocated mating piece arranged at the cover grid 26 for each one of the first and second alignment guides 60, 60'.
  • said mating piece is formed by a foot element 72 resting on the load-bearing step 62, in that carrying the cover grid 26 when arranged within the inlet opening 24.
  • the cover grid 26 illustrated by Fig. 7 includes four foot elements 72, which are arranged in pairs at the two opposing shorter lateral edges of the cover grid 26, therein resting in pairs on the two opposing load-bearing steps 62, 62', as is illustrated in dotted lines in Fig.
  • two diagonally arranged foot elements 72 are not only provided for operating as bearing or resting means, but they are also working as centring aids, in that matching and interacting with the first and second alignment guides 60, 60', which are allocated to these two diagonally arranged foot elements 72 and which, as previously explained, are therefore arranged diagonally opposite each other in the same way as the two foot elements 72.
  • Said matching or interaction of foot elements 72 and first and second alignment guides 60, 60' is specifically proved by means of tongues or protrusions 76, which laterally protrude from the two shorter lateral edges of the cover grid 26.
  • the cover grid 26 further comprises four spacers 74, which are arranged at the two opposing longer lateral edges of the cover grid 26, which spacers 74 are also illustrated in dotted lines in Fig. 8 .
  • the spacers 74 are positioned on the bottom side of the cover grid 26, and they also comprise tongues or protrusions 76, which laterally protrude from the two longer lateral edges of the cover grid 26.
  • the spacers 74 more specifically, the tongues or protrusions 76 of the spacers 74, interact with assigned inclined surfaces, particularly chamfers, arranged at the rim or edges of the inlet opening 24.
  • the foot elements 72 and/or the spacers 74 are made of an elastic material, preferably rubber or silicone.
  • an elastic material preferably rubber or silicone.
  • the extraction device 14 as disclosed herein may also include means for avoiding misplacement of the cover grid 26.
  • a misplacement specifically a placement rotated by 180 degrees, may be disadvantageous if a specifically guided air inlet shall be provided by means of the cover grid 26, may be avoided e. g. with the first and second alignment guides 60, 60', and having different shapes, which assure in interaction with respective designs of the assigned foot elements 72 a placement of the cover grid 26 at the inlet opening 24 in a particular orientation.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cookers (AREA)
EP22215860.2A 2022-12-22 2022-12-22 Dispositif d'extraction Pending EP4390236A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP22215860.2A EP4390236A1 (fr) 2022-12-22 2022-12-22 Dispositif d'extraction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22215860.2A EP4390236A1 (fr) 2022-12-22 2022-12-22 Dispositif d'extraction

Publications (1)

Publication Number Publication Date
EP4390236A1 true EP4390236A1 (fr) 2024-06-26

Family

ID=84569383

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22215860.2A Pending EP4390236A1 (fr) 2022-12-22 2022-12-22 Dispositif d'extraction

Country Status (1)

Country Link
EP (1) EP4390236A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUD20080265A1 (it) * 2008-12-19 2010-06-20 Airone S R L "sistema di aspirazione a scomparsa da piano comprendente mezzi di sicurezza"
DE102009025038A1 (de) * 2009-06-10 2010-12-16 Wilhelm Bruckbauer Kochdunst-Eintrittsvorrichtung mit abnehmbarer deckelförmiger Verschließeinrichtung
WO2013123928A2 (fr) * 2012-02-25 2013-08-29 Wilhelm Bruckbauer Dispositif aspirant pour table de cuisson à élément de fermeture pouvant être orienté horizontalement et semi-verticalement
DE102017127229A1 (de) * 2017-11-20 2019-05-23 Miele & Cie. Kg Anordnung bestehend aus zumindest einer Dunstabzugseinrichtung und zumindest einem Kochfeld und Verfahren zum Betreiben der Anordnung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUD20080265A1 (it) * 2008-12-19 2010-06-20 Airone S R L "sistema di aspirazione a scomparsa da piano comprendente mezzi di sicurezza"
DE102009025038A1 (de) * 2009-06-10 2010-12-16 Wilhelm Bruckbauer Kochdunst-Eintrittsvorrichtung mit abnehmbarer deckelförmiger Verschließeinrichtung
WO2013123928A2 (fr) * 2012-02-25 2013-08-29 Wilhelm Bruckbauer Dispositif aspirant pour table de cuisson à élément de fermeture pouvant être orienté horizontalement et semi-verticalement
DE102017127229A1 (de) * 2017-11-20 2019-05-23 Miele & Cie. Kg Anordnung bestehend aus zumindest einer Dunstabzugseinrichtung und zumindest einem Kochfeld und Verfahren zum Betreiben der Anordnung

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