EP3498054A1 - Cuiseur chauffant à couche mince détectant des ustensiles de cuisson avec des procédés de chauffage améliorés - Google Patents

Cuiseur chauffant à couche mince détectant des ustensiles de cuisson avec des procédés de chauffage améliorés

Info

Publication number
EP3498054A1
EP3498054A1 EP17751315.7A EP17751315A EP3498054A1 EP 3498054 A1 EP3498054 A1 EP 3498054A1 EP 17751315 A EP17751315 A EP 17751315A EP 3498054 A1 EP3498054 A1 EP 3498054A1
Authority
EP
European Patent Office
Prior art keywords
thin film
film heating
heating elements
sensor
appliance
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Withdrawn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
EP17751315.7A
Other languages
German (de)
English (en)
Inventor
Pinar YAVUZ
Oguzhan KAYA
Ulas OKTAY
Alper YESILCUBUK
Emre Yavuz TURK
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.)
Arcelik AS
Original Assignee
Arcelik AS
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 Arcelik AS filed Critical Arcelik AS
Publication of EP3498054A1 publication Critical patent/EP3498054A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/12—Cooking devices
    • H05B6/1209—Cooking devices induction cooking plates or the like and devices to be used in combination with them
    • H05B6/1245—Cooking devices induction cooking plates or the like and devices to be used in combination with them with special coil arrangements
    • H05B6/1272—Cooking devices induction cooking plates or the like and devices to be used in combination with them with special coil arrangements with more than one coil or coil segment per heating zone
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/68—Heating arrangements specially adapted for cooking plates or analogous hot-plates
    • H05B3/74—Non-metallic plates, e.g. vitroceramic, ceramic or glassceramic hobs, also including power or control circuits
    • H05B3/748—Resistive heating elements, i.e. heating elements exposed to the air, e.g. coil wire heater
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/36—Coil arrangements
    • H05B6/44—Coil arrangements having more than one coil or coil segment
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
    • H05B2213/03—Heating plates made out of a matrix of heating elements that can define heating areas adapted to cookware randomly placed on the heating plate
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
    • H05B2213/05—Heating plates with pan detection means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Definitions

  • the present invention relates to a system for the operation of a thin film heater cooker.
  • Thin film heaters are extensively used in cooking appliances operating as a cooker. Thin film heaters have a wide range of usage from windscreens to cooking. When a thin film heater is used for cooking purposes, it will normally consume approximately four times more power in comparison to its other usages. Beside space usage advantages due to the lower thickness of thin film material, a cooking hob with thin-film heating elements provides faster heating having improved efficiency and uniformity.
  • EP1206164 discloses a device for determining the location of cooking utensils on a cooking hob comprising a plurality of thermal cells distributed in matrix formation below a heat-resistant surface on which the cooking utensil can be located in random manner, the determination of its location, form and dimensions enabling those thermal cells lying below the utensil to be energized, the same thermal cells being also individually used for this determination.
  • WO2015160890 discloses a thin film heater appliance.
  • the present invention provides a system for the operation of a thin film heating cooker with the help of sensors in various functions aimed to sense the utensil’s position as provided by the characterizing features defined in Claim 1.
  • Primary object of the present invention is to provide a system for the operation of a thin film heating cooker by which a cooking utensil’s fixed position is sensed and thanks to this operation, the associated part of the thin film heating cooker will step in and provide improved heating.
  • the present invention proposes a thin film heating appliance with a plurality of preferably 4x4 matrix formation thin film heating cookers, each one comprising a plurality of thin film heating elements.
  • the configuration can be in the form of rectangular, C-type or ring-type thin film heating elements.
  • sensor units are located around the periphery of the thin film heating elements or between shorter edges of said rectangular thin film heating elements. Optic sensor couples oppositely communicate at shorter side edges and inductive sensors and capacitive sensors are disposed along longer edges. In the case of C-type and ring-type configurations, at least one sensor unit consisting of inductive, capacitive optical or load sensors is located centrally.
  • Fig. 1 demonstrates a general schematic view of a rectangular type heater configuration with a thin film heating cooker comprising a plurality of distinct type sensors according to one embodiment of the present invention.
  • Fig. 2 demonstrates a general schematic view of the sensor type distribution in the rectangular type heater configuration according to the embodiment of Fig. 1.
  • Fig. 3 demonstrates a general schematic view of a C-type heating cell configuration with a thin film heating cooker comprising a plurality of distinct type sensors according to another embodiment of the present invention.
  • Fig. 4 demonstrates a general schematic view of a ring-type heating cell configuration with a thin film heating cooker comprising a plurality of distinct type sensors according to another embodiment of the present invention.
  • Fig. 5 demonstrates a general schematic view of a matrix formation adaptation of heater configuration with a thin film heating cooker system according to the present invention.
  • the present invention proposes a thin film heating cooker (1) having an inductive sensor (9) , a capacitive sensor (10) , an optic sensor (11) or a load sensor (12) in a sensor unit (2) .
  • Said sensor unit (2) can consist of any combination of the mentioned sensors.
  • a busbar (5) typically consists of electrical conductors as a generating station on which power is concentrated for distribution.
  • the thin film heating cooker (1) uses thin film heating elements (4) as a heating source in the form of electrically conductive material placed relative to a substrate. Typically, a glass surface (3) is placed on the thin film heating elements (4) to transmit the heat to utensils that are needed to be cooked.
  • a thin-film heating element is a conductive film forming a thin film on a substrate heating said substrate.
  • the thin-film heating element may for instance include a tin oxide resistive film delimited by oppositely extending busbar (5) conductors.
  • the present invention addresses the situation where a cooking utensil such as a pot or pan being set on the thin film heating cooker (1) which has inductive, capacitive, optic or load sensors (9, 10, 11, 12) to sense the position and existence thereof. These sensors work as part of an integrated system to sense positionment of a cooking means as will be delineated hereinbelow.
  • the inductive sensors (9) mentioned in accordance with the present invention typically operate in line with the Faraday’s law of electromagnetic induction.
  • the inductive sensor (9) in case a metal object is placed across the inductive sensor (9) , eddy currents are generated within the ferromagnetic base. In this case, change of the voltage drop at the terminals of the coil provides an indication for the presence of the metal object.
  • a conventional capacitive sensor (10) that generates a capacitive field through an RC oscillator is provided.
  • the metal or non-metal particle enters the capacitive field and this in turn causes a change in the dielectric level.
  • capacitive sensors (10) successfully detects if there is a metal or non-metal object by means of variation of the oscillation frequency.
  • the present invention makes use of optical sensors (11) or photocells comprising a transmitter or light source and a receiver to sense the light.
  • Light source emits light at a particular frequency at the transmitting side.
  • the receiver is used to receive the light from the source in the determined frequency.
  • the present invention makes use of known type of load sensors (12) using a strain gauge measuring the deformation as a change in electrical resistance, which is proportional to the applied forces.
  • inductive sensors (9) in the sensor unit (2) sense if there is a metal utensil on the glass surface (3) by means of the change in the voltage value of the coil that generates electromagnetic field.
  • Capacitive sensors (10) in the sensor unit (2) sense the utensil thanks to the change in the measurement of dielectric coefficient.
  • Optic sensors (11) in the sensor unit (2) sense the utensil whereby the utensil blocks the light that goes through the optical sensor.
  • Load sensors (12) in the sensor unit (2) sense the utensil by means of the weight of the utensil.
  • the configuration shown in Figure 1 relates to the thin film heating elements (4) in the form of a rectangular thin film heating element (13) .
  • the busbar (5) conductors are located oppositely along the longer edges of said rectangular thin film heating elements (13) .
  • the heating elements can be connected in parallel or in series to provide different power rates with the same voltage value.
  • the sensor units (2) are located immediately around the periphery of the thin film heating elements (13) or between shorter edges of said rectangular thin film heating elements (13) .
  • a rectangular type heating cell (6) comprises the rectangular thin film heating element (13) , at least one sensor unit (2) and the busbar (5) .
  • the optic sensors (11) are peripherally located at the shorter side edges of the thin film heating cooker (1) surface, at an elevated level above the glass surface (3) at both sides of the respective thin film heating cooker of the cooking appliance; accordingly, said reciprocally operational optic sensors (11) will function as a transmitter and receiver to locate the correct position of the utensil.
  • An inductive sensor (9) is disposed along longer edges of the thin film heating cooker (1) between each pair of the rectangular type heating cells (6) . Therefore, two longitudinally neighboring thin film heating elements (4) share an inductive sensor (9) thereinbetween.
  • Inductive sensors (9) and capacitive sensors (10) typically detect if there is a utensil immediately above a respective area.
  • An optic sensor (11) can be individually used as sensor unit (2) below the glass surface (3) and in association with a respective heating element. In this case, the optic sensor (11) senses presence of a pan directly above the same.
  • Load sensors (12) being centrally disposed in the middle of the thin film heating cooker (1) , a plurality of capacitive sensors (10) are peripherally located along the longer edges of the thin film heating cooker (1) surface.
  • the busbar (5) typically comprise a pair of elongate, parallel rods at two longer sides of the thin film heating elements (4) .
  • the configuration of busbar (5) conductors along two longitudinal edges provides faster and more effective heating along the surface of the thin film heating elements (4) .
  • load sensors (12) are centrally positioned behind circumferentially bordering thin film heating elements (4) of the thin film heating cooker (1) .
  • Longer side sensor units (2) of the circumferentially bordering thin film heating elements (4) are capacitive sensors (10) and each neighboring pair of longer edge circumferentially bordering thin film heating elements (4) share an in-between inductive sensor (9) . Therefore, advantageously, shorted edge optic sensors (11) and central load sensors (12) successfully sense presence of a cooking utensil while inductive and capacitive sensors (9, 10) together with the information received from the load sensors (12) specify correct positionment of the utensil.
  • a cooking appliance comprises a plurality of thin film heating cookers with the 4x4 layout as shown in Fig. 1 and 2.
  • the configuration shown in Figure 2 relates to the thin film heating elements (4) in the form of a C-type thin film heating element (14) .
  • the busbar (5) is placed at two ends of the C-shape heating element, forming a perpendicularly extending terminal relative to the curved axis of the C shape structure.
  • the heating elements can be connected in parallel or in series to provide different power rates with the same voltage value.
  • the sensor units (2) are located in the center of said C type thin film heating element (14) .
  • the sensor unit (2) can be formed as sensor assembly consisting of inductive, capacitive optical, or load sensors (8, 9, 10, 11) .
  • the configuration shown in Figure 5 relates to a general schematic representation of the thin film heating elements (4) in the form of a matrix layout.
  • the configuration shown in Figure 4 comprises ring-type thin film heating elements (15) .
  • the busbar (5) conductors are configured in a ring-like shape to enclose said ring-type thin film heating element (15) from inside and outside the same in a radially enclosed manner.
  • the sensor units (2) are located in the center of said thin film heating elements (4) .
  • the sensor unit (2) can be consisted of inductive, capacitive, optical or load sensors (8, 9, 10, 11) .
  • a thin film heating appliance comprising at least one thin film heating cooker (1) , said at least one thin film heating cooker (1) comprising a plurality of thin film heating elements (4) forming a two-dimensional web of neighboring thin film heating elements (4) and at last one sensor unit in the form of an inductive sensor (9) , a capacitive sensor (10) , an optic sensor (11) or a load sensor (12) , each of said thin film heating elements (4) being supplied power by a busbar (5) .
  • each of said thin film heating elements (4) are delimited by longitudinal busbar (5) conductors enclosing said thin film heating element (4) at least at two sides thereof.
  • each of said thin film heating elements (4) are in the form of a rectangular thin film heating element (13) and said busbar (5) conductors are located oppositely along the longer edges of said rectangular thin film heating elements (13) .
  • each of said sensor units (2) are located around the periphery of the thin film heating elements (13) or between shorter edges of said rectangular thin film heating elements (13) .
  • said optic sensors (11) are peripherally located at the shorter side edges of the thin film heating cooker (1) surface.
  • an inductive sensor (9) is disposed along longer edges of the thin film heating cooker (1) between each pair of the rectangular thin film heating elements (13) .
  • two longitudinally neighboring thin film heating elements (4) share an inductive sensor (9) thereinbetween.
  • load sensors (12) are centrally positioned behind circumferentially extending thin film heating elements (4) bordering the edges of said thin film heating cooker (1) .
  • a plurality of capacitive sensors (10) is peripherally located along the longer edges of the thin film heating cooker (1) surface.
  • said thin film heating appliance comprises a plurality of thin film heating cookers with a 4x4 layout of thin film heating elements (4) .
  • each of said thin film heating elements (4) are in the form of a C type thin film heating element (14) with busbar (5) conductors placed at two ends of the C shape heating element, forming a perpendicularly extending terminal relative to the curved axis of the C shape structure.
  • the C-type configuration is advantageous in that the surface area of the thin film heating elements (14) provide a more concentrated heating in view of the more compact space usage by each C-type element and also provides acceptably fast heating results compared to smaller busbar (5) conductor sizes.
  • a sensor assembly comprising at least one sensor unit (2) consisting of inductive, capacitive optical or load sensors (8, 9, 10, 11) is located in the center of said C type thin film heating element (14) .
  • each of said thin film heating elements (4) are in the form of ring type thin film heating elements (15) with busbar (5) conductors configured as a ring-like shape to enclose said ring type thin film heating element (15) from inside and outside the same in a radial manner.
  • This configuration is both advantageous in fast heating due to fully enclosing busbar (5) conductors with sizes substantially greater than the C-type configuration. Further, fast and effective heating is achieved thanks to the ring type thin film heating elements (15) .
  • a sensor assembly comprising at least one sensor unit (2) consisting of inductive, capacitive optical or load sensors (8, 9, 10, 11) is located in the center of said ring type thin film heating element (14) .

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Control Of Resistance Heating (AREA)

Abstract

L'invention concerne un système et un procédé d'utilisation d'un cuiseur chauffant à couche mince. L'invention concerne plus particulièrement un appareil chauffant à couche mince comprenant au moins un cuiseur chauffant à couche mince (1), ledit cuiseur (1) au moins comprenant une pluralité d'éléments chauffants à couche mince (4) formant une bande bidimensionnelle d'éléments chauffants à couche mince (4) voisins et au moins une unité capteur se présentant sous la forme d'un capteur inductif (9), d'un capteur capacitif (10), d'un capteur optique (11) ou d'un capteur de charge (12), chacun desdits éléments chauffants à couche mince (4) étant alimenté électriquement par une barre omnibus (5).
EP17751315.7A 2016-08-08 2017-07-27 Cuiseur chauffant à couche mince détectant des ustensiles de cuisson avec des procédés de chauffage améliorés Withdrawn EP3498054A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR201611088 2016-08-08
PCT/EP2017/069010 WO2018029002A1 (fr) 2016-08-08 2017-07-27 Cuiseur chauffant à couche mince détectant des ustensiles de cuisson avec des procédés de chauffage améliorés

Publications (1)

Publication Number Publication Date
EP3498054A1 true EP3498054A1 (fr) 2019-06-19

Family

ID=59581879

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17751315.7A Withdrawn EP3498054A1 (fr) 2016-08-08 2017-07-27 Cuiseur chauffant à couche mince détectant des ustensiles de cuisson avec des procédés de chauffage améliorés

Country Status (2)

Country Link
EP (1) EP3498054A1 (fr)
WO (1) WO2018029002A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2754873A1 (es) * 2018-10-18 2020-04-20 Bsh Electrodomesticos Espana Sa Dispositivo de inducción
ES2754821A1 (es) * 2018-10-18 2020-04-20 Bsh Electrodomesticos Espana Sa Dispositivo de inducción
ES2754877A1 (es) * 2018-10-18 2020-04-20 Bsh Electrodomesticos Espana Sa Dispositivo de Inducción

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3496336A (en) * 1967-10-25 1970-02-17 Texas Instruments Inc Electric heater
US6242722B1 (en) * 1999-07-01 2001-06-05 Thermostone Usa, Llc Temperature controlled thin film circular heater
US6225608B1 (en) * 1999-11-30 2001-05-01 White Consolidated Industries, Inc. Circular film heater
IT1319292B1 (it) 2000-11-08 2003-10-10 Whirlpool Co Dispositivo per rilevare la collocazione di utensili di cottura su unpiano di cottura ad elementi riscaldanti discreti e distribuiti.
ES2376566B1 (es) * 2009-10-13 2013-01-29 Bsh Electrodomésticos España, S.A. Campo de cocción con sensores inductivos.
DE102012001027A1 (de) * 2012-01-19 2013-07-25 Futurecarbon Gmbh Heizeinrichtung und Verfahren zum Betreiben einer Heizeinrichtung
KR101373610B1 (ko) * 2013-01-03 2014-03-14 박대규 스마트 그릴 및 그 온도제어방법
EP3132654A4 (fr) 2014-04-16 2018-01-31 Spectrum Brands, Inc. Appareil de cuisson utilisant un élément chauffant à film mince
DE102014224051A1 (de) * 2014-11-25 2016-05-25 E.G.O. Elektro-Gerätebau GmbH Induktionskochfeld und Verfahren zur Steuerung eines Induktionskochfelds

Also Published As

Publication number Publication date
WO2018029002A1 (fr) 2018-02-15

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