EP4403832B1 - Kochfeld mit integrierter dunstabzugshaube - Google Patents

Kochfeld mit integrierter dunstabzugshaube Download PDF

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Publication number
EP4403832B1
EP4403832B1 EP24152215.0A EP24152215A EP4403832B1 EP 4403832 B1 EP4403832 B1 EP 4403832B1 EP 24152215 A EP24152215 A EP 24152215A EP 4403832 B1 EP4403832 B1 EP 4403832B1
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EP
European Patent Office
Prior art keywords
filtering element
unit
spacer
filter
filtering
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.)
Active
Application number
EP24152215.0A
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English (en)
French (fr)
Other versions
EP4403832C0 (de
EP4403832A1 (de
Inventor
Michele Gentile
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.)
SIFIM - Srl
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Sifim Srl
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Publication date
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Publication of EP4403832A1 publication Critical patent/EP4403832A1/de
Application granted granted Critical
Publication of EP4403832C0 publication Critical patent/EP4403832C0/de
Publication of EP4403832B1 publication Critical patent/EP4403832B1/de
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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

  • the present invention relates to a cooktop unit with an integrated extraction hood.
  • Extractor hoods integrated into a cooktop for kitchens are known.
  • Such types of extractor hoods comprise an extraction system arranged under the cooktop in communication with an opening of the cooktop, in such a way that the fumes generated when cooking foods are extracted downwardly through the opening of the cooktop.
  • a filter generally comprising a plurality of mesh-shaped filtering elements, is arranged in the opening of the cooktop, said filter being suitable for extracting the air, filtering the fats contained in the extracted fumes, and preventing the passage of solid particles with a larger diameter than the holes of the meshes of the filtering element.
  • Prior art documents describing similar extractor hoods integrated into a cooktop include US2014/230662 A1 , US2014/182575 A1 , EP3951267 A1 , CN105203602 B , EP3492818 A1 and EP3951270 A1 .
  • a drawback of such types of extractor hoods integrated in the cooktop consists in the fact that liquids may fall onto the cooktop frequently during the operation of the cooktop and of the extractor hood.
  • the unit (100) comprises a cooktop (1) and an extractor hood (2) integrated into the cooktop (1).
  • the cooktop (1) comprises stoves (10), such as induction stoves.
  • An extraction opening (11) is obtained in the cooktop (1).
  • the extraction opening (11) communicates with a housing (20) disposed under the cooktop (1).
  • An extraction system (21) of the extraction hood is arranged in the housing (20), it being suitable for extracting the air from the extraction opening (11) downwardly.
  • the extraction system (21) comprises a fan (22) and an electric motor (23) that operates the fan.
  • a filter (3) is arranged in the extraction opening (11).
  • the filter (3) must be suitable for letting the air extracted by the extraction system (21) pass through and at the same time retain the fats contained in the fumes extracted by the extractor hood and the solid particles with a given diameter.
  • the filter (3) is removably mounted in the extraction opening (11) in such a way that it can be removed, cleaned and/or replaced.
  • the filter (3) comprises:
  • the first filtering element (4) and the second filtering element (5) operate as two electrical contacts of a normally open switch or as two armatures of a capacitor, in which the spacer (6) operates as dielectric between the armatures of the capacitor.
  • the filter (3) may also comprise a frame (8) in the form of a perimeter frame that retains and supports the filtering elements (4, 5) and the spacer (6) in package configuration.
  • the frame (8) may be made of an insulating material in such a way not to create an electrical bridge between the first filtering element (4) and the second filtering element (5).
  • the frame (8) has two holes (80) that are crossed by the shanks (61) of the spacer, so that the pins (7a, 7b) protrude externally from the frame.
  • the two pins (7a, 7b) of the filter (3) are electrically connected to detection means (9) suitable for detecting an electrical connection between the first filtering element (4) and the second filtering element (5).
  • the detection means (9) are connected to control means (91) configured to send a control signal (S) to the electric motor (23) of the extractor hood in order to stop it when the detection means detect an electrical connection between the first filtering element (4) and the second filtering element (5).
  • the filter (7) operates as a normally open switch that is closed when water passes through the spacer (6) establishing an electrical connection between the first filtering element (4) and the second filtering element (5).
  • the detection means (9) comprise a capacitive detector (90) suitable for detecting a capacity (C) of the capacitor generated by the spacer (6) arranged between the first filtering element (4) and the second filtering element (5).
  • the control device (91) comprises a comparator (92) configured to compare the detected capacity (C) with a preset capacity threshold value (C1). When the detected capacity (C) exceeds the capacity threshold value (C1), the control device (91) sends a control signal (S) to the electric motor (23) of the extractor hood in order to stop it, thus preventing the extraction system (21) of the extractor hood from extracting the water.
  • the detection means (9) may comprise an electrical conductivity detector suitable for detecting the electrical conductivity between the first filtering element (4) and the second filtering element (5).
  • the detected electrical conductivity is very low because the spacer (6) operates as insulator between the first filtering element (4) and the second filtering element (5). If the water passes through the spacer (6), the electrical conductivity increases significantly, as the water operates as electrical conductor.
  • the control device (91) sends a control signal (S) to the electric motor (23) of the extractor hood in order to stop it, thus preventing the extraction system (21) of the extractor hood from extracting the water.
  • a second embodiment of the filter (3) is illustrated, in which at least a third filtering element (104) is added in front of the first filtering element.
  • the third filtering element (104) consists of a mesh substantially similar to that of the first filtering element (4) and of the second filtering element (5). Two overlapping third filtering elements (104) are shown in Fig. 2 .
  • the third filtering element (104) is isolated from the first filtering element (4) by means of a second spacer (106) substantially similar to the first spacer.
  • the frame (8) is made of a conductive material
  • the first filtering element (4) is isolated from the frame (8)
  • the second filtering element (5) is in contact with the frame (8). Therefore, the second pin (7b) is arranged in the frame (8).
  • a third embodiment of the filter (3) is illustrated, in which at least a fourth filtering element (105) is added behind the second filtering element (5).
  • the fourth filtering element (105) consists of a mesh substantially similar to that of the first filtering element (4) and of the second filtering element (5).
  • a third filtering element (104) arranged in front of the first filtering element (4) and a fourth filtering element (105) arranged behind the second filtering element (5) are shown in Fig. 8 .
  • the fourth filtering element (105) is isolated from the second filtering element (5) by means of a third spacer (206) substantially similar to the first spacer (6).
  • the frame (8) is made of a conductive material
  • the first filtering element (4) is isolated from the frame (8)
  • the second filtering element (5) is isolated from the frame (8).
  • the spacer (6) has a perimeter edge (60) with two shanks (61) that protrude from the perimeter edge (60) to penetrate respective holes (81) of the frame (8).
  • the shanks (61) have holes (62) into which the pins (7a, 7b) are press-fitted so that the pins (7a, 7b) protrude from the frame (8) in order to be connected to electrical cables.
  • Tests were performed on the filter (3) for the purpose of detecting an accidental fall of hot or cold water from the cooktop (1) into the extraction opening (11) so as to stop the electric motor (23) and at the same time ensure a normal steam extraction when the hot water contained in a pot placed on a stove starts boiling.
  • the passage of saturated or unsaturated steam through the filter (3) must not be detected by the detection device (90) in such a way that the extractor hood (2) may be operated normally.
  • Tests were carried out with the filter (3) in clean conditions and after soiling the filter with an emulsion of water and oil: 20 g of oil in 100 g of water, letting the water evaporate in an oven at 50°C for 8 hours.
  • the capacity values (C) measured in these tests remained unchanged.
  • Another test was carried out by placing three pots with a total of 1.5 liters of water on three stoves (10) of the cooktop, in order to simulate the extraction of a sufficient quantity of steam.
  • the extractor hood (2) was set at the maximum extraction speed.
  • the formation of condensation on the filter (3) was monitored and a proper operation of the detection device (90) was verified, said detection device (90) being calibrated in such a way that the detected capacity (C) did not exceed the capacity threshold value (C1) with the accumulation of steam on the surfaces of the filter (3).

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ventilation (AREA)

Claims (13)

  1. Einheit (100), umfassend:
    - ein Kochfeld (1) mit einer Abzugsöffnung (11),
    - eine unter dem Kochfeld (1) integrierte Abzugshaube (2), die einen Elektromotor (23) aufweist, der ein Abzugssystem (21) betätigt, um die Luft aus der Abzugsöffnung (11) abzusaugen, und
    - einen in der Abzugsöffnung (11) angeordneten Filter (3),
    wobei der Filter (3) umfasst:
    - ein erstes Filterelement (4),
    - ein zweites Filterelement (5),
    - ein Distanzstück (6) aus einem elektrisch isolierenden Material, das dazu geeignet ist, Luft hindurchzulassen und zwischen dem ersten Filterelement (4) und dem zweiten Filterelement (5) angeordnet ist,
    dadurch gekennzeichnet, dass
    das erste Filterelement (4) und das zweite Filterelement (5) aus einem elektrisch leitenden Material hergestellt sind,
    wobei ferner das Distanzstück (6) so angeordnet ist, dass es das erste Filterelement (4) von dem zweiten Filterelement (5) elektrisch isoliert,
    wobei die Einheit (100) ferner umfasst:
    - Erfassungsmittel (9), die mit dem ersten Filterelement (4) und dem zweiten Filterelement (5) elektrisch verbunden sind, um eine elektrische Verbindung zwischen dem ersten Filterelement (4) und dem zweiten Filterelement (5) zu erfassen, und
    - Steuermittel (91), die mit den Erfassungsmitteln (9) verbunden sind und konfiguriert sind, um ein Steuersignal (S) an den Elektromotor (23) der Abzugshaube zu senden und den Elektromotor (23) anzuhalten, wenn die Erfassungsmittel eine elektrische Verbindung zwischen dem ersten Filterelement (4) und dem zweiten Filterelement (5) erfassen.
  2. Einheit (100) nach Anspruch 1, wobei die Erfassungsmittel (9) einen Kapazitätsdetektor (90) umfassen, der geeignet ist, eine Kapazität (C) eines Kondensators zu erfassen, die von dem Distanzstück (6) erzeugt wird, das zwischen dem ersten Filterelement (4) und dem zweiten Filterelement (5) angeordnet ist.
  3. Einheit (100) nach Anspruch 1 oder 2, wobei die Erfassungsmittel (9) einen elektrischen Leitfähigkeitsdetektor umfassen.
  4. Einheit (100) nach einem der vorstehenden Ansprüche, wobei das erste Filterelement (4) und das zweite Filterelement (5) aus einem leitfähigen Metall hergestellt sind und das Distanzstück (6) aus einem isolierenden Kunststoff hergestellt ist.
  5. Einheit (100) nach Anspruch 4, wobei das erste Filterelement (4) und das zweite Filterelement (5) aus Aluminium oder Edelstahl hergestellt sind und das Distanzstück (6) aus ABS (Acryl-Butyl-Styrol) oder PVC (Polyvinylchlorid) hergestellt ist.
  6. Einheit (100) nach einem der vorstehenden Ansprüche, wobei das erste Filterelement (4) und das zweite Filterelement (5) netzförmig sind und das Distanzstück (6) gitterförmig ist.
  7. Einheit (100) nach einem der vorstehenden Ansprüche, wobei der Filter (3) ferner einen Rahmen (8) in Form eines umlaufenden Rahmens umfasst, der die Filterelemente (4, 5) und das Distanzstück (6) als Paket enthält und trägt.
  8. Einheit (100) nach Anspruch 7, wobei der Rahmen (8) aus einem elektrisch isolierenden Material hergestellt ist.
  9. Einheit (100) nach Anspruch 7 oder 8, wobei der Rahmen (8) aus einem elektrisch leitfähigen Material hergestellt ist und das erste Filterelement (4) so angeordnet ist, dass es nicht mit dem Rahmen (8) in Kontakt kommt, um von dem zweiten Filterelement (5) isoliert zu sein, und wobei das zweite Filterelement (5) so angeordnet ist, dass es mit dem Rahmen (8) in Kontakt kommt, der mit den Erfassungsmitteln (9) verbunden ist.
  10. Einheit (100) nach einem der vorstehenden Ansprüche, wobei der Filter (3) ferner einen ersten Stift (7a) umfasst, der mit dem ersten Filterelement (4) elektrisch verbunden ist, und einen zweiten Stift (7b), der mit dem zweiten Filterelement (5) elektrisch verbunden ist.
  11. Einheit (100) nach Anspruch 1, wobei das Distanzstück (6) einen umlaufenden Rand (60) mit zwei Schenkeln (61) aufweist, die mit jeweiligen Löchern (62) versehen sind, die mit dem ersten Filterelement (4) bzw. mit dem zweiten Filterelement (5) verbunden sind und wobei die Stifte (7a, 7b) jeweils in die Löcher (62) der Schäfte (61) des Distanzstücks eingesteckt sind.
  12. Einheit (100) nach einem der vorstehenden Ansprüche, wobei der Filter (3) mindestens ein drittes Filterelement (104) umfasst, das gegenüber dem ersten Filterelement (4) angeordnet ist, und ein zweites Distanzstück (106), das zwischen dem ersten Filterelement (4) und dem dritten Filterelement (104) angeordnet ist.
  13. Einheit (100) nach einem der vorstehenden Ansprüche, wobei der Filter (3) mindestens ein viertes Filterelement (105) umfasst, das hinter dem zweiten Filterelement (5) angeordnet ist, und ein drittes Distanzstück (206), das zwischen dem zweiten Filterelement (5) und dem vierten Filterelement (105) angeordnet ist.
EP24152215.0A 2023-01-20 2024-01-16 Kochfeld mit integrierter dunstabzugshaube Active EP4403832B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102023000000822A IT202300000822A1 (it) 2023-01-20 2023-01-20 Gruppo piano cottura con cappa integrata.

Publications (3)

Publication Number Publication Date
EP4403832A1 EP4403832A1 (de) 2024-07-24
EP4403832C0 EP4403832C0 (de) 2025-06-25
EP4403832B1 true EP4403832B1 (de) 2025-06-25

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ID=86099984

Family Applications (1)

Application Number Title Priority Date Filing Date
EP24152215.0A Active EP4403832B1 (de) 2023-01-20 2024-01-16 Kochfeld mit integrierter dunstabzugshaube

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Country Link
EP (1) EP4403832B1 (de)
ES (1) ES3042543T3 (de)
IT (1) IT202300000822A1 (de)
PL (1) PL4403832T3 (de)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080274683A1 (en) * 2007-05-04 2008-11-06 Current Energy Controls, Lp Autonomous Ventilation System
US9677772B2 (en) * 2013-02-21 2017-06-13 Rain Mountain, Llc Intelligent ventilating safety range hood control system
CN105203602B (zh) * 2015-10-15 2018-05-01 广东美的厨房电器制造有限公司 油烟机及其油污程度检测装置和方法
EP3492818A1 (de) * 2017-11-30 2019-06-05 Vestel Elektronik Sanayi ve Ticaret A.S. Detektionssystem und detektionsverfahren
EP3951270A1 (de) * 2020-08-05 2022-02-09 Electrolux Appliances Aktiebolag Kombinationsgerät
EP3951267A1 (de) * 2020-08-05 2022-02-09 Electrolux Appliances Aktiebolag Kombinationsgerät und verwendung des kombinationsgeräts

Also Published As

Publication number Publication date
PL4403832T3 (pl) 2025-11-03
EP4403832C0 (de) 2025-06-25
IT202300000822A1 (it) 2024-07-20
EP4403832A1 (de) 2024-07-24
ES3042543T3 (en) 2025-11-21

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