EP3557141A1 - Cuisinière du type autoportant comportant un système d'extraction et de filtration de fumées intégré - Google Patents

Cuisinière du type autoportant comportant un système d'extraction et de filtration de fumées intégré Download PDF

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Publication number
EP3557141A1
EP3557141A1 EP18425028.0A EP18425028A EP3557141A1 EP 3557141 A1 EP3557141 A1 EP 3557141A1 EP 18425028 A EP18425028 A EP 18425028A EP 3557141 A1 EP3557141 A1 EP 3557141A1
Authority
EP
European Patent Office
Prior art keywords
cooker
filter
lid
fumes
linear actuator
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Withdrawn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
EP18425028.0A
Other languages
German (de)
English (en)
Inventor
Auro Po
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.)
Steel Srl
Original Assignee
Steel Srl
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 Steel Srl filed Critical Steel Srl
Priority to EP18425028.0A priority Critical patent/EP3557141A1/fr
Publication of EP3557141A1 publication Critical patent/EP3557141A1/fr
Withdrawn legal-status Critical Current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
    • F24C15/2042—Devices for removing cooking fumes structurally associated with a cooking range e.g. downdraft
    • 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 sector of large electric household appliances for the kitchen, in particular kitchen units of the type comprising a top cooking hob and an oven compartment housed underneath said cooking hob.
  • the technical problem underlying the present invention is therefore that of providing a cooker of the freestanding type which houses an oven compartment and incorporates inside it the entire fume extraction and filtration system and also has the characteristics of being constructionally simple and faultless during operation.
  • a freestanding cooker comprising: an oven compartment; a top cooking hob; a fume extraction path which is fully incorporated inside the body of said cooker and extends between an inlet opening on the level of the cooking hob and an outlet portion, said path being intercepted by an extraction fan intended to move the fumes along the path and by one or more filters for said fumes; said extraction fan being housed inside a vacuum chamber positioned underneath said oven compartment; said path further comprising a vertical inverted flue with a substantially flat form positioned along a rear section of said cooker, behind said oven compartment, said inverted flue connecting the inlet opening to the vacuum chamber.
  • the structure of the fume extraction system described above in particular owing to the innovative flat element of the inverted flue and the specific spatial arrangement of the various components, is unusually compact and may be advantageously housed inside the body of a freestanding cooker with conventional dimensions.
  • the inlet opening may be a longitudinal slit which extends at the rear of the cooking hob, namely along a rear edge of the kitchen unit, behind the plurality of hotplates or burners of the cooking hob.
  • the longitudinal slit is perfectly aligned with the inverted flue underneath it, avoiding deviations in the flow and the presence of crevices which are difficult to clean.
  • the inverted flue has a thickness the same as or smaller than that of the inlet opening situated above it so as to define an effective constriction which increases the speed of the flow along the downward section.
  • the flat inverted flue has a relatively small thickness, preferably less than 10 cm, even more preferably less than 5 cm.
  • the inverted flue may advantageously have a form tapered toward its base, whereat said inverted flue is connected to the vacuum chamber.
  • said inverted flue is an insert, separate from a muffle which defines internally the oven compartment.
  • the inverted flue owing to its particularly thin form, is therefore situated inside the narrow gap - defined by the extension of the side covering panels and the top skirting - separating the oven muffle from the wall next to which the cooker is arranged.
  • the outlet portion of the fume path connects the vacuum chamber to one or more outlet openings emerging in the surrounding environment, namely there is no connection between the fume conveying path and a flue pipe.
  • the outlet openings may be advantageously positioned at the front of the cooker, underneath the opening of the oven compartment.
  • the outlet openings may take the form of a plurality of slits which are aligned on one or more levels or a grille or may take some other form suitable for the function of expelling the fumes which have been conveniently filtered and cooled.
  • the outlet portion may also comprise, preferably in a position immediately upstream of the outlet openings, at least one filter for the fumes.
  • This filter takes the form of an active-carbon or self-cleaning plasma filter unit.
  • the active-carbon filter and the plasma filter are defined by modules which may be easily interchanged, at least during the stage of initial assembly of the cooker, without modifying the other components of the appliance.
  • the filter unit is preferably a box-shaped element which is accessible at the bottom of the cooker body and is designed to be passed through by the stream of fumes flowing out from the vacuum chamber and conveniently directed downwards by a deviating element.
  • a further filter having the main function of capturing the particles of grease present in the fumes, is preferably mounted along the inverted flue, i.e. upstream of the extraction fan.
  • the cooker according to the present invention preferably comprises a closing lid for the inlet opening.
  • Said lid can be pivoted between a closed position, where it closes off the inlet opening, and an open position, where it does not close off the inlet opening, allowing extraction of the fumes.
  • the lid can also be arranged in a third maintenance position, which allows the user to access the grease capture filter mounted inside the inverted flue.
  • the plate which defines the lid in the closed position, is positioned horizontally, flush with the contour of the inlet opening; in the open position, said plate is positioned inclined; in the maintenance position, if present, the plate is positioned with an inclination greater than that of the open position.
  • the lid may have, associated with it, a linear actuator which, when operated, is subject to a displacement from a retracted position into an extended position. This displacement accompanies the movement of the lid from the closed position into the open position.
  • the linear actuator comprises preferably a heat-expandable material, for example: a wax, which causes extension of the stem of said actuator.
  • a heat-expandable material for example: a wax, which causes extension of the stem of said actuator.
  • the thermal expansion and contraction of the heat-expandable material therefore define the displacement from the retracted position into the extended position and vice versa.
  • the heat-expandable material is heated locally by an electrical resistance which is passed through by current only in the event of operation of the linear actuator.
  • Heating of the heat-expandable wax requires a considerable amount of time, roughly between 5 seconds and one minute.
  • the displacement of the linear actuator - and the respective opening of the lid - is delayed with respect to operation which is conveniently performed at the moment of activation of the extraction fan.
  • time delay may be achieved using systems different from the heat-expandable actuator described above, for example by means of electronic timing of the delay.
  • connection between linear actuator and lid consists of a simple bearing contact between the stem of the actuator and a pushing surface of the lid, defined for example by an inclined lug of the main surface. Moreover, the lid reaches a gravitational equilibrium in the closed position.
  • Operation of the linear actuator ceases preferably at the moment of deactivation of the extraction fan, following which - with a time delay similar to that described for displacement into the extended position - the actuator recovers the retracted position, allowing gradual and non-immediate closure of the fume inlet opening.
  • a freestanding cooker according to the present invention is generally denoted by 1.
  • Said cooker 1 is shown in the attached drawings in its normal working configuration.
  • the relative and absolute positions and the orientations of the various elements which form the unit - defined by means of terms such as “upper” and “lower”, “above” and “below”, “horizontal” and “vertical” or other equivalent terms, must always be interpreted with reference to this configuration.
  • the cooker 1 comprises an oven compartment 2 defined by a muffle 11 surrounded by side panels 20 and having an upper module 30 arranged above it.
  • the oven compartment 2 is closed at the front by a conventional hatch-door 21 which can be opened.
  • the upper module 30 comprises at the top a cooking hob 3 with a plurality of hotplates or burners 31 which in this case are five in number.
  • the cooking hob may have any number and/or type of hotplate or burner (for example: of the gas or induction type).
  • the cooking hob 3 is surrounded by a raised frame defined laterally by two panels aligned with the aforementioned side panels 20; at the front by a straight profiled part 34 which is situated above the control interface 33; at the rear by a skirting 32 preferably made of metal and with a rectangular cross-section.
  • the top profile of the skirting 32 has, formed therein, an inlet opening 5 with an elongated shape which defines the entrance to a path 4 for extraction of the cooking fumes generated at the front by the heating of food on the cooking hob 3.
  • inverted flue 4 which has a substantially flat shape or small thickness and is associated underneath the skirting 32 and behind the muffle 11, inside a gap which is left between the latter and the ideal plane of contact with a rear wall.
  • the inverted flue 4 which is preferably made of metal (for example: stainless steel), extends vertically with a downward tapering trapezoidal profile. Its thickness, which is substantially constant, is substantially smaller than the thickness of the inlet opening 5 situated above it.
  • a grease catching filter with a preferably mechanical action, not shown in the attached figures, is preferably arranged inside the inverted flue 4.
  • the inverted flue 6 is connected to a closed vacuum chamber 7 containing an extraction fan inside it.
  • An outlet portion 8 of the fume extraction path 4 extends downstream of the vacuum chamber 7. This outlet portion 8 has, at the extraction fan delivery, an inclined baffle 15 for deviating the flow of the fumes downwards in the direction of a filter unit 9.
  • the filter unit 9 may be alternatively an active-carbon filter or a plasma filter of the self-cleaning type.
  • a hatch 16 is provided underneath the cooker 1 for access to said filter unit 9.
  • the fume extraction path 4 continues at the front towards a series of front outlet openings 12 which in the example described here are defined by slits aligned on two different levels.
  • the outlet openings 12 extend in an area underneath the hatch-door 21 for closing the oven compartment 2.
  • the extraction fan During use, the extraction fan generates a major vacuum which is discharged inside the inverted flue 6 until it reaches, via the inlet opening 5, the area of the cooking hob 3.
  • the vacuum generated on the level of the hob and forced by the constriction of the inverted flue 4 attracts the vapour and the fumes generated by the cooking of food, at a speed much faster than the natural movement of the fumes upwards.
  • the fume extraction path 4 has a particularly compact structure and passes around the oven compartment 2; in fact the inverted flue 6 is situated behind the oven compartment 2; the vacuum chamber 7 and the subsequent outlet portion are situated underneath the oven compartment 2.
  • the inlet opening 5 may be selectively closed by means of a lid 10.
  • the lid 10 is defined by a plate 18 pivoting about a hinging axis 17 and provided at the bottom with an inclined lug defining a pushing surface 14.
  • the lid 10 may be arranged in three different positions, identified below:
  • lid 10 is hinged at the rear of the profile of the plate 18, such that, during rotation, the latter is raised with respect to the plane of the skirting 32 with the opening directed towards the cooking hob 3.
  • the closed and maintenance positions of the lid 10 are both gravitational equilibrium positions, where the weight of the plate 18 is displaced respectively to one side or the other of the hinging axis 17.
  • the open position is instead not an equilibrium position.
  • a linear actuator 13 with a stem 19 is provided so as to exert a pressure on the pushing surface 14 indicated above.
  • the linear actuator 13 is conveniently arranged at the interface between the skirting 32 and the inverted flue 6 and is completely concealed from the user's view.
  • the linear actuator 13 comprises internally a heat-expandable wax which determines the extended or retracted position of the stem 19. In the rest configuration - with the wax cold - the stem 19 is in a retracted position; in the actuating position - where the wax is locally heated by means of an electrical resistance - the stem 19 is in an extended position. Heating and cooling of the wax require a considerable amount of time, roughly about 30 seconds, such that the displacement of the stem 19 is delayed with respect to operation of the linear actuator 13.
  • the linear actuator 13 is conveniently operated upon activation of the extraction fan.
  • the lid 10 is brought into the open position.
  • the delay advantageously defines a transitory vacuum peak which is useful for redirecting the cooking fumes during the start of extraction.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Baking, Grill, Roasting (AREA)
EP18425028.0A 2018-04-17 2018-04-17 Cuisinière du type autoportant comportant un système d'extraction et de filtration de fumées intégré Withdrawn EP3557141A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP18425028.0A EP3557141A1 (fr) 2018-04-17 2018-04-17 Cuisinière du type autoportant comportant un système d'extraction et de filtration de fumées intégré

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18425028.0A EP3557141A1 (fr) 2018-04-17 2018-04-17 Cuisinière du type autoportant comportant un système d'extraction et de filtration de fumées intégré

Publications (1)

Publication Number Publication Date
EP3557141A1 true EP3557141A1 (fr) 2019-10-23

Family

ID=62567589

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18425028.0A Withdrawn EP3557141A1 (fr) 2018-04-17 2018-04-17 Cuisinière du type autoportant comportant un système d'extraction et de filtration de fumées intégré

Country Status (1)

Country Link
EP (1) EP3557141A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4124799A1 (fr) * 2021-07-30 2023-02-01 Electrolux Appliances Aktiebolag Appareil combiné avec élément de couverture actionnable
IT202200008951A1 (it) * 2022-05-03 2023-11-03 Bertazzoni Spa Apparecchio di cottura ad uso domestico del tipo tutto in uno.

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2586023A (en) * 1947-07-19 1952-02-19 Cribben And Sexton Company Ventilated range
FR1156581A (fr) * 1956-07-26 1958-05-19 Perfectionnements apportés aux appareils pour l'aspiration de vapeurs, notamment de buées
US4766880A (en) * 1986-01-20 1988-08-30 Gaggenau-Werke Haus-And Lufttechnik Gmbh Apparatus for drawing off vapors from kitchen equipment
EP0390988A1 (fr) * 1987-11-20 1990-10-10 New World Domestic Appliances Limited Dispositif pour aspirer l'air
EP1912024A2 (fr) * 2006-10-11 2008-04-16 Electrolux Professional S.P.A. Cuisinière avec hotte aspirante intégré
US20100163549A1 (en) * 2005-08-01 2010-07-01 Gagas John M Low Profile Induction Cook Top with Heat Management System
EP3045824A1 (fr) * 2015-01-16 2016-07-20 Berbel Ablufttechnik Gmbh Dispositif d'aspiration d'air au-dessus d'une cuisiniere
EP3301375A1 (fr) * 2016-09-21 2018-04-04 Miele & Cie. KG Dispositif de revêtement pour une bouche d'aération à cuvette et unité d'entrée de la bouche d'aération à cuvette pourvue d'un dispositif de revêtement

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2586023A (en) * 1947-07-19 1952-02-19 Cribben And Sexton Company Ventilated range
FR1156581A (fr) * 1956-07-26 1958-05-19 Perfectionnements apportés aux appareils pour l'aspiration de vapeurs, notamment de buées
US4766880A (en) * 1986-01-20 1988-08-30 Gaggenau-Werke Haus-And Lufttechnik Gmbh Apparatus for drawing off vapors from kitchen equipment
EP0390988A1 (fr) * 1987-11-20 1990-10-10 New World Domestic Appliances Limited Dispositif pour aspirer l'air
US20100163549A1 (en) * 2005-08-01 2010-07-01 Gagas John M Low Profile Induction Cook Top with Heat Management System
EP1912024A2 (fr) * 2006-10-11 2008-04-16 Electrolux Professional S.P.A. Cuisinière avec hotte aspirante intégré
EP3045824A1 (fr) * 2015-01-16 2016-07-20 Berbel Ablufttechnik Gmbh Dispositif d'aspiration d'air au-dessus d'une cuisiniere
EP3301375A1 (fr) * 2016-09-21 2018-04-04 Miele & Cie. KG Dispositif de revêtement pour une bouche d'aération à cuvette et unité d'entrée de la bouche d'aération à cuvette pourvue d'un dispositif de revêtement

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4124799A1 (fr) * 2021-07-30 2023-02-01 Electrolux Appliances Aktiebolag Appareil combiné avec élément de couverture actionnable
WO2023006467A1 (fr) * 2021-07-30 2023-02-02 Electrolux Appliances Aktiebolag Dispositif d'extraction et appareil de combinaison avec élément de recouvrement souple
IT202200008951A1 (it) * 2022-05-03 2023-11-03 Bertazzoni Spa Apparecchio di cottura ad uso domestico del tipo tutto in uno.

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