EP3502568A1 - Procédé de fonctionnement d'un appareil de cuisson, système de commande et programme informatique - Google Patents

Procédé de fonctionnement d'un appareil de cuisson, système de commande et programme informatique Download PDF

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Publication number
EP3502568A1
EP3502568A1 EP17208662.1A EP17208662A EP3502568A1 EP 3502568 A1 EP3502568 A1 EP 3502568A1 EP 17208662 A EP17208662 A EP 17208662A EP 3502568 A1 EP3502568 A1 EP 3502568A1
Authority
EP
European Patent Office
Prior art keywords
overflow
cooker
electrical circuit
break
heating element
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Withdrawn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
EP17208662.1A
Other languages
German (de)
English (en)
Inventor
Yusuf AK
Mert Serdar BÍLGÍN
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.)
Vestel Elektronik Sanayi ve Ticaret AS
Original Assignee
Vestel Elektronik Sanayi ve Ticaret 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 Vestel Elektronik Sanayi ve Ticaret AS filed Critical Vestel Elektronik Sanayi ve Ticaret AS
Priority to EP17208662.1A priority Critical patent/EP3502568A1/fr
Priority to TR2017/22517A priority patent/TR201722517A2/tr
Publication of EP3502568A1 publication Critical patent/EP3502568A1/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Withdrawn legal-status Critical Current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
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/08—Arrangement or mounting of control or safety devices
    • F24C7/082—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination
    • F24C7/083—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination on tops, hot plates
    • 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
    • H05B6/06—Control, e.g. of temperature, of power
    • H05B6/062—Control, e.g. of temperature, of power for cooking plates or the like

Definitions

  • the present disclosure relates to a method for operating a cooker, a cooker, a control system for a cooker and a computer program.
  • capacitive cooker overflow detection devices are known.
  • CN 202432566 U describes the use of a capacitive cooker overflow detection device, for an induction cooker in particular, surrounding a heating area of a cooker surface onto which a cooking vessel would be placed. In this way, a dedicated overflow detection arrangement is provided separately from a touch-sensitive cooker control panel.
  • US 2008/0150705 A1 describes a capacitive contamination detection element provided in addition to, but normally isolated from, a capacitive touch sense element on a cooking surface, for example. Detection of an overflow from a cooking vessel comprises detecting a coupling of signals from the touch sense element to the contamination detection element or vice-versa, caused by a contaminant overlaying both elements, as may typically occur with an overflow. It is known to provide capacitive touch sense elements in regions of a cooking surface for the purpose of detecting an overflow of liquid or other cooking ingredients from a cooking vessel, for example. However, such regions of a cooking surface may also be likely to accumulate other contaminants such as moisture or limescale which reduces the reliability of detecting an overflow by those elements.
  • a failure to detect an overflow and to take action to switch off the respective heating element or warn the user may result in the cooking vessel overheating and spoilage or messing of the cooking surface.
  • any touch-sensitive controls provided to control functions of the cooker may also be over-run by an overflowing liquid before any action can be taken by the user to disable the heating elements of the cooker, with unpredictable and potentially dangerous results.
  • a cooker comprising:
  • the cooking surface may comprise at least one heating element with which the overflow sensing element is associated.
  • the overflow sensing element is a bimetallic strip.
  • the embodiments of this invention are particularly useful when the heating element is an induction heating element.
  • the surface of the cooker around the heating elements does not heat up in an induction cooker. Instead, the heating element operates in cooperation with cooking vessels to heat the food inside the cooking vessels. Therefore in normal operation the area of the cooking surface around the heating elements remains sufficiently cool that the bimetallic strip will normally lie flat. In a flat condition, it completes the electrical circuit. However, when an overflow event occurs and liquid or other food stuff drops onto the bimetallic strip, it is heated up and this causes it to curl and to break the electrical circuit.
  • the safety action may deactivate the heating element associated with the at least one overflow sensing element responsive to detecting a break in the electrical circuit.
  • the safety action could comprise issuing a warning to a user of the cooker so that they may be alerted and go and turn off the heating element manually.
  • the cook could remove the vessel from the cooker.
  • an overflow sensing element which normally completes an electrical circuit, and is arranged to break the electrical circuit when affected by a hot liquid or other foodstuff, the risk of fire caused by liquid/food overflow can be mitigated.
  • Another aspect of the disclosure provides a method of operating a cooker having at least one overflow sensing element associated with a heating element on a cooking surface of the cooker and located to complete an electrical circuit, the method comprising:
  • control system for detecting overflow events in a cooker, the control system comprising:
  • a further aspect of the disclosure provides a computer program which when installed and executed by a digital processor causes the digital processor to implement the method according to any of the above defined steps.
  • a cooking surface 10 of an induction cooker for example, is shown schematically in a plan view.
  • the cooking surface includes four heating regions 12, 14, 16 and 18 for placing cooking vessels to be heated.
  • a region of touch-sensitive cooker controls 20 may also be provided.
  • Each of the regions 12-18 for placing cooking vessels is surrounded by a respective group of one or more overflow sensing elements 22, 24, 26 and 28 intended to detect an overflow from a cooking vessel placed on the respective heating region 12-18.
  • Each overflow sensing element takes the form of a bimetallic structure or bimetallic strip. Operation of bimetallic strips are known, but for the sake of completeness is described herein with reference to Figure 2 .
  • Figure 2 shows a bimetallic strip 22 composed of a first metal layer 22a and a second metal layer 22b.
  • the metal layer 22a expands more than the metal layer 22b, that is the expansion coefficient of metal layer 22a is greater than that of metal layer 22b.
  • the metal layers are fixedly joined together by fixed connections 22c the expansion of the metal layer with the higher expansion coefficient is constrained and this causes the bimetallic strip to bend as shown on the right hand side of Figure 2 .
  • bimetallic strips 22-28 are placed around the heating regions so that multiple strips extend radially from each heating region.
  • each bimetallic strip lies flat within or on the cooker surface. This is because in the case of induction cookers only a vessel on the heating region is heated, and not the surrounding area. The surface temperature of the area around the heating element does not increase during a cooking process.
  • bimetallic strip In the event of an overflow from a vessel being heated (that is, hot liquid or other foodstuff spilling over the top of the vessel and landing on the bimetallic strip), the bimetallic strip will start to heat up. Any bimetallic strip in the overflow region will therefore start to curl. This property is used herein to allow them to be used as a switch inside an electrical circuit. In a normal condition (at room temperature) the bimetallic strips are flat and the electrical circuit containing them is closed. However, in the state of an overflow event, bimetallic strips in the overflow region will curl and break the circuit, causing the circuit to become open circuit.
  • Figure 3 shows an overflow detection system which comprises an overflow detection control unit 30 configured to detect breaks in the electric circuit.
  • Figure 3 illustrates the overflow detection system in a condition where no overflow has occurred.
  • Four electrical circuits are shown, each comprising a bimetallic strip. In reality there may be many such circuits.
  • Each circuit has a conductive portion 32 connected to a voltage source 34 and to the bimetallic strip 22.
  • Another conductive portion 36 connects the bimetallic strip 22 to the overflow detection control unit 30.
  • the bimetallic strip may lie on the surface of the cooker, and the conductive portions 32, 36 may extend beneath the cooking surface.
  • Each bimetallic strip may be contained within its own respective electrical circuit.
  • the bimetallic strip surrounding the same heating region may be connected in series in a single electrical circuit for that heating region. Any break in that circuit would indicate an overflow event around that heating region.
  • the overflow detection system comprises a cooker controller 38 which can be activated by the overflow detection control unit 30 in the event of a break being detected to turn off the affected heating element. This is one type of safety action that may be taken to prevent further overflow events and to prevent a fire etc.
  • Another action which may be additionally or alternatively taken is to issue a warning to a user that an overflow event has occurred.
  • the warning could take the form of a flashing light or an audible sound etc.
  • FIG. 4 shows the overflow detection system in a state where one of the bimetallic strips has been subject to an overflow event.
  • the bimetallic strip 24 has been affected by hot food or liquid and has curled, breaking the circuit in which it normally completes. This is detected by the overflow detection control unit which now identifies an open circuit condition in that electrical circuit and can issue a warning and/or cause the cooker controller to turn off the heating element.
  • the overflow detection control unit may comprise a processor which is suitably programmed to issue a warning and/or cause the cooker controller 38 to turn off the heating elements when such an event is detected.
  • FIG. 5 shows a sequence of steps in accordance with a method of one embodiment of the invention.
  • an overflow occurs at a hob of the cooker.
  • the bimetallic strip in the region of the overflow is caused to curl by the increase of its temperature as a result of the overflow event.
  • the curling of this bimetallic strip causes the circuit containing the bimetallic strip to become open circuit.
  • this is detected by the control unit 30 and at step S58 the control unit acts on the cooker controller to cause it to turn off the hob which was subject to the overflow event.
  • the overflow detection control unit can associate each circuit with its associated hob, such that it can identify to the cooker controller the hob which needs to be turned off as a result of an overflow event.
  • the invention also extends to computer programs, particularly computer programs on or in a carrier, adapted for putting the invention into practice.
  • the program may be in the form of non-transitory source code, object code, a code intermediate source and object code such as in partially compiled form, or in any other non-transitory form suitable for use in the implementation of processes according to the invention.
  • the carrier may be any entity or device capable of carrying the program.
  • the carrier may comprise a storage medium, such as a solid-state drive (SSD) or other semiconductor-based RAM; a ROM, for example a CD ROM or a semiconductor ROM; a magnetic recording medium, for example a floppy disk or hard disk; optical memory devices in general; etc.
  • SSD solid-state drive
  • ROM read-only memory
  • magnetic recording medium for example a floppy disk or hard disk
  • optical memory devices in general etc.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electric Stoves And Ranges (AREA)
  • Cookers (AREA)
EP17208662.1A 2017-12-19 2017-12-19 Procédé de fonctionnement d'un appareil de cuisson, système de commande et programme informatique Withdrawn EP3502568A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP17208662.1A EP3502568A1 (fr) 2017-12-19 2017-12-19 Procédé de fonctionnement d'un appareil de cuisson, système de commande et programme informatique
TR2017/22517A TR201722517A2 (tr) 2017-12-19 2017-12-28 Bi̇r pi̇şi̇ri̇ci̇yi̇, bi̇r kontrol si̇stemi̇ni̇ ve bi̇r bi̇lgi̇sayar programini çaliştirmak i̇çi̇n bi̇r yöntem

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17208662.1A EP3502568A1 (fr) 2017-12-19 2017-12-19 Procédé de fonctionnement d'un appareil de cuisson, système de commande et programme informatique

Publications (1)

Publication Number Publication Date
EP3502568A1 true EP3502568A1 (fr) 2019-06-26

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EP17208662.1A Withdrawn EP3502568A1 (fr) 2017-12-19 2017-12-19 Procédé de fonctionnement d'un appareil de cuisson, système de commande et programme informatique

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EP (1) EP3502568A1 (fr)
TR (1) TR201722517A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113924446A (zh) * 2019-07-05 2022-01-11 伟视达电子工贸有限公司 用于烹饪设备的装置、烹饪设备以及清洁烹饪设备的方法
WO2022258339A1 (fr) * 2021-06-11 2022-12-15 BSH Hausgeräte GmbH Table de cuisson et ensemble panneau avec détection de débordement
WO2022258341A1 (fr) * 2021-06-11 2022-12-15 BSH Hausgeräte GmbH Table de cuisson avec détection de débordement

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080150705A1 (en) 2006-12-20 2008-06-26 Tyco Electronics Canada, Ltd. Contaminant detecting touch sensitive element
CN202432566U (zh) 2012-01-10 2012-09-12 美的集团有限公司 一种电磁炉溢锅检测装置
JP2012181929A (ja) * 2011-02-28 2012-09-20 Mitsubishi Electric Corp 加熱調理器
EP2582205A1 (fr) * 2010-06-10 2013-04-17 Panasonic Corporation Dispositif de cuisson par chauffage par induction
JP2014199818A (ja) * 2009-07-28 2014-10-23 パナソニック株式会社 加熱調理器

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080150705A1 (en) 2006-12-20 2008-06-26 Tyco Electronics Canada, Ltd. Contaminant detecting touch sensitive element
JP2014199818A (ja) * 2009-07-28 2014-10-23 パナソニック株式会社 加熱調理器
EP2582205A1 (fr) * 2010-06-10 2013-04-17 Panasonic Corporation Dispositif de cuisson par chauffage par induction
JP2012181929A (ja) * 2011-02-28 2012-09-20 Mitsubishi Electric Corp 加熱調理器
CN202432566U (zh) 2012-01-10 2012-09-12 美的集团有限公司 一种电磁炉溢锅检测装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113924446A (zh) * 2019-07-05 2022-01-11 伟视达电子工贸有限公司 用于烹饪设备的装置、烹饪设备以及清洁烹饪设备的方法
WO2022258339A1 (fr) * 2021-06-11 2022-12-15 BSH Hausgeräte GmbH Table de cuisson et ensemble panneau avec détection de débordement
WO2022258341A1 (fr) * 2021-06-11 2022-12-15 BSH Hausgeräte GmbH Table de cuisson avec détection de débordement

Also Published As

Publication number Publication date
TR201722517A2 (tr) 2019-07-22

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