EP3951268A1 - Plaque de cuisson et procédé de fonctionnement d'une plaque de cuisson - Google Patents

Plaque de cuisson et procédé de fonctionnement d'une plaque de cuisson Download PDF

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Publication number
EP3951268A1
EP3951268A1 EP21188675.9A EP21188675A EP3951268A1 EP 3951268 A1 EP3951268 A1 EP 3951268A1 EP 21188675 A EP21188675 A EP 21188675A EP 3951268 A1 EP3951268 A1 EP 3951268A1
Authority
EP
European Patent Office
Prior art keywords
hob
display means
power supply
presence sensor
plate
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
EP21188675.9A
Other languages
German (de)
English (en)
Inventor
Sandra Eitel
Tilo Fucik
Dinka Selimic
Peter Walk
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.)
EGO Elektro Geratebau GmbH
Original Assignee
EGO Elektro Geratebau GmbH
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 EGO Elektro Geratebau GmbH filed Critical EGO Elektro Geratebau GmbH
Publication of EP3951268A1 publication Critical patent/EP3951268A1/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
    • 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
    • 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
    • H05B6/1218—Cooking devices induction cooking plates or the like and devices to be used in combination with them with arrangements using lights for heating zone state indication
    • 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

Definitions

  • the invention relates to a hob with a flat hob plate and heating devices on the hob plate and a method for operating such a hob.
  • the invention is based on the object of creating a hob as mentioned at the outset and a method for operating it, with which problems of the prior art can be avoided and, in particular, safe and instinctive operation of a hob and its advantageous operation is possible.
  • the hob has a flat hob plate and heating devices on this hob plate or below it. These can be different heating devices, advantageously induction heating coils. It also has a control device for the hob with control elements, the control elements being at least partially manually operable rotary knobs. In particular, they can be arranged on a vertical control panel in front of and below the level of the hob plate.
  • Toggle display means are provided on at least one rotary toggle, advantageously LEDs or illuminants, particularly advantageously on its front side. At least one display or toggle display means can be provided for each rotary toggle. Partial segments, color gradients or color changes depending on residual heat are also conceivable.
  • the control device of the hob has at least one such control element on or below the hob plate. Additionally or alternatively, one or more control elements can be located on or on the rotary knob, or the rotary knobs themselves form the control elements of the hob.
  • the hob also has hob display means on or below the hob plate, which are designed to be illuminated through the hob plate. They can also be designed as known, in particular having LEDs. They can be part of the operating device or stand alone.
  • the hob has pot identification means which are advantageously arranged under the hob plate.
  • pot identification means which are advantageously arranged under the hob plate.
  • sensor means under the hob plate on hotplates that can detect a pot on the hotplate inductively or capacitively.
  • Induction heating coils are advantageous, which can also form the aforementioned heating devices, ie offer both functions.
  • the hob has a power supply to supply the heating devices with power, either as simple switches or as power electronics or power semiconductors for induction heating coils. They preferably work with the power level specified by the operating device.
  • the hob has a presence sensor that is advantageously built into it, for example on or below the hob plate or on an aforementioned control panel. It can also be formed by integrated touch sensors. It may alternatively be connected to an associated presence sensor located elsewhere outside the hob, for example on an extractor hood or on a cupboard above, or positioned elsewhere in the environment. Communication can advantageously take place by radio.
  • the hob has a power supply for the operating device, possibly also for the presence sensor if it is integrated in the hob or is part of the same. This can be or have a switching power supply.
  • This power supply advantageously has low energy consumption when the hob is in a standby mode, ie not in use.
  • the voltage supply and the power supply are designed separately, ie using different components or using different functional units. Under certain circumstances, they can also be arranged on different printed circuit boards.
  • the at least one presence sensor can be arranged on one of the rotary toggles or directly next to it, advantageously at a distance of less than 10 cm or even less than 5 cm.
  • the advantage of mounting at this location is that the rotary knob itself or the control panel on which it is located faces into the room and can thus detect the presence of an approaching person much better.
  • a single presence sensor can be provided for the entire hob. This alone should be sufficient to detect the approach of an operator, both at a short distance, such as 10 cm to 50 cm, and at a long distance, such as 1 m to 5 m can in particular be less than 2 m or less than 50 cm, the presence sensor activates the hob display means and/or the toggle display means. To do this, he also activates a control of the operating device or the hob accordingly or this controls him and evaluates it, with the control then also activating, in particular illuminating, the hob display means and/or the toggle display means.
  • a presence sensor can be designed as known from motion detectors, but for example also capacitive by means of capacitive sensors. Even the above-mentioned capacitive touch switches can form a presence sensor, which can then detect an operator at a rather short distance of 3 cm to 20 cm, especially when he bends over the hob when putting a saucepan on.
  • a printed circuit board for the hob display means can preferably be provided under the hob plate, on which certain components are arranged.
  • the aforementioned further operating elements can also be arranged here.
  • the control of the operating device can be arranged on this printed circuit board for the hob display means or on a separate printed circuit board directly behind the rotary knobs. This control can advantageously be the entire cooktop control, so that no further control needs to be present.
  • the heating devices on the hob plate preferably form defined hotplates, in particular at least partially for each hotplate.
  • at least one heating device is assigned exactly one rotary knob for setting the output, it being possible for each heating device to be assigned exactly a single rotary knob provided only for this heating device.
  • the heating devices can be induction heating coils, with these induction heating coils then preferably also forming the aforementioned pot detection means, so that they can detect pots inductively.
  • the hob is operated in a standby mode in which all heating devices and the power supply are switched off, in particular the pot detection means as well.
  • the hob display means are preferably also switched off.
  • the hob is operated in a cooking mode in which the power supply is switched on and at least one heater can be powered to heat a pot placed above it, preferably at least one hob display means also being switched on.
  • the power supply can operate the pot detection means if they are formed by induction heating coils as described above. is in standby mode the occupancy sensor active and powered by the power supply that is on and enabled.
  • these can be the operating elements that have to be active anyway to detect switching on the hob, especially if they are touch sensors.
  • the power supply is then switched on and activated.
  • One of the heating devices can be activated or operated and heat, but it does not have to be.
  • the following steps are carried out according to the invention.
  • an operator approaches the presence sensor, which is also activated in standby mode. If the distance between the operator and the presence sensor is below a limit distance, in particular less than 2 m or less than 50 cm, the presence sensor activates the hob display means and/or the toggle display means.
  • the power supply can be activated with the pot detection, and after a pot has been detected, the display means can be activated.
  • information relating to the hob or the state of the hob can be output to the operator or the information can be displayed to the operator.
  • information can be displayed, in particular with regard to the detected size of the pots, residual heat on a hotplate according to a known hot display or the like.
  • the hob can be switched from the standby mode to the cooking mode, whereupon the pot detection system searches for pots placed on the hob plate.
  • the pot detection means are supplied with power from the power supply.
  • the power supply has been switched on for this. However, they do not actually have to heat, they just have to carry out the pot detection. Any pots placed on the hob plate and recognized by the pot detection can then be displayed with their corresponding position on corresponding hob display means and/or toggle display means.
  • the hob display means and/or the toggle display means can be deactivated either immediately or after a specified waiting time has elapsed.
  • the power supply can then also be switched off again, so that the hob is again operated in standby mode. The pot detection is then no longer needed.
  • the hob 11 has a hob plate 14, for example made of known translucent reddish-brown glass ceramic.
  • Four distributed hotplates 15a to 15d are provided, as is known from the prior art. Each of the four hotplates 15a to 15d is formed by an induction heating coil of a corresponding size, which is arranged underneath the hotplate 14.
  • a pot 16 is placed on the hotplate 15b at the rear left.
  • the corresponding induction heating coil 15c' is shown for illustrative purposes. It is connected to a power supply 38 .
  • a control panel 17 is arranged at the front of the cooker 12 or the hob 11 below the plane of the hob plate 14 .
  • In the right area of the control panel 17 are four rotary knobs 19a to 19d for the hob 12 are arranged.
  • Each of the rotary toggles 19a to 19d is assigned to a hotplate 15a to 15d and thus to the induction heating coil associated with it for operation.
  • a presence sensor 27 is arranged between the two groups of rotary toggles 19 and 20 .
  • This can be designed, for example, like a conventional motion detector, alternatively it can be designed in the manner of a reflex light barrier or as a capacitive presence sensor. Its range or a distance, which can serve as the limit distance for the distance from an operator, can be between a few centimeters and a few meters; this can possibly also be adjusted or set individually via a controller 25 connected to it.
  • the presence sensor 27 could also be arranged directly on the rotary knob 19b or on one of the rotary knobs 19 or 20.
  • it can be integrated in the operating unit 34 and preferably also use the existing operating elements or sensors or touch sensors.
  • the power supply 38 advantageously has standard power electronics for induction heating coils.
  • the connecting cable 13 is connected to a power supply 40 for the controller 25 and, above all, for an operating device 34 .
  • the operating device 34 is provided in the front central area of the hob plate 14 . It has several illuminated controls 35, in which 3 a control element 35b is shown at the rear left and is illuminated. These operating elements 35 are advantageously designed as capacitive touch switches, as is known from the prior art.
  • the power supply 40 is also used to supply the presence sensor 27 and possible further displays or illuminated displays.
  • additional illuminated displays are provided as illuminated displays 33a in front of the hotplate 15a on the left in front 3 shown activated. They can represent a locally assigned hot display, that is to say signal to an operator that this hotplate 15a still has a temperature above 40° C. or 50° C., just as it corresponds to a conventional hot display.
  • Such a hot display could also be provided as an illuminated display in the area of the operating device 34 and arranged there for the hotplate 15a at the front left.
  • the illuminated displays 33b surround the hotplate 15b in the manner of a circular ring segment at a small distance. Through their glow in the 3 they indicate that the induction heating coil as pot detection means has detected the presence of the pot 16 thereon. So they do not form a hot display but indicate that a pot has been recognized. This is also previously mentioned information that represents or illustrates the hob or its condition. They could also be provided on the operating device 34 . For this purpose, the recognition of the pot 16 can be displayed on the left rear control element 35b on the control device 34 by its lighting, as is the case 3 indicates.
  • the controller 25 is supplied with power by the voltage supply 40, even if the hob 12 is switched off or put into standby mode. Furthermore, the power supply 40 also supplies the presence sensor 27 with power or voltage so that it is always working. If an operator approaches the presence sensor at a distance below a predetermined limit distance, then the presence sensor 27 detects this. This limit distance can be less than 2 m or even less than 50 cm. In the present case the 2 this is an operator's hand 29 approaching the presence sensor 27 below the limit distance, for example because it is moving towards a rotary knob 19 on the front panel 21 .
  • this rotary knob 19 can adjust a conventional power control device 22, which is connected to the controller 25, in order to adjust the power of one of the hotplates 15a to 15d or their induction heating coils.
  • the controller 25 can then activate different display options.
  • it can activate a toggle display means 36 on the front side of the rotary toggle 19, advantageously implemented by an LED, for the in 2 lights shown.
  • the toggle display means 36 is connected to the controller 25 by means of a connecting cable 37 inside the rotary toggle 19 and inside the axis of rotation 21, and can therefore be controlled by it. For example, it can be indicated that the presence of the operator or his hand 29 has been detected.
  • the hot indicator 33a when the presence of an operator is detected by the presence sensor 27, the hot indicator 33a can also be activated first, which was previously deactivated because the hob 12 was switched off in standby mode. This can be used to avoid operating the hot indication of the indicator lights 33a when there is no operator around. Then there is also no danger that an operator could burn or injure himself here.
  • the indicator lights 33b on the hotplate 15b could light up to indicate to an operator that the pot 16 has been recognized by the hob 12 .
  • the controller 25 switches on the power supply 38 after detecting the presence of the operator. This is necessary to control the induction heating coils on the hotplates 15a to 15d.
  • the controller 25 can now cause the induction heating coils to operate as pot detection means in accordance with their usual pot detection function, which is known from the prior art. In doing so, the induction heating coil of the hotplate 15b will detect the pot 16, and this is indicated by the indicator lights 33b.
  • An additional or alternative display of the detected pot 16 can be done on the rotary knob 19b by means of the knob display means 36b, so that it only lights up when a pot 16 has also been placed on the hotplate 15b associated with the rotary knob 19b and has been recognized.
  • All of this information, displayed or conveyed by the light displays 33, 35 and 36, is only activated and thus displayed when the operator has approached the cooker 11 or the hob 12 from a distance below the limit distance.
  • the special feature here is that not only the detection of the presence is displayed in some way, for example by means of the toggle display means 36b or the light displays 33a as a hot display, but that the pot detection is started.
  • the power supply 38 for the induction heating coils must first be switched on so that the induction heating coils can work as pot detection means.
  • the power supply alone is not sufficient or not designed to operate the induction heating coils as pot detection means.
  • the power control device 22 is arranged on the same circuit board LP1 as the controller 25. All power control devices of the control panel 17 are advantageously arranged on this printed circuit board LP1, or at least those that belong to one of the groups of rotary knobs 19 or 20.
  • the controller 25 can then be connected to the operating device 34 by means of a cable or the like. to be connected.
  • the 4 shows an arrangement of the operating device 34 with the illuminable operating elements 35 below the hob plate 14.
  • the operating device 34 is arranged on a printed circuit board LP2.
  • the controller 25 can also be arranged on this and not on the printed circuit board LP1 of the power control devices 22.
  • the hob 12 In the idle state after connecting the hob 12 to the connection cable 13, the hob 12 is in standby mode. If the power supply 38 is then switched on, for example by switching on the hob 12 or by actuating an ON switch, it is in Cooking mode it switched to from standby mode. In cooking mode, it is not absolutely necessary to cook or to operate one of the induction heating coils for heating. In the case of the invention, it is also not absolutely necessary for the hob 12 to be switched from the standby mode to the cooking mode after the presence sensor 27 has detected the presence of an operator. This is only the case if it is deemed necessary for some reason or to activate the induction heating coils of the hotplates 15 to function as pan detection means.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electric Stoves And Ranges (AREA)
  • Induction Heating Cooking Devices (AREA)
EP21188675.9A 2020-08-06 2021-07-30 Plaque de cuisson et procédé de fonctionnement d'une plaque de cuisson Pending EP3951268A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102020209940.5A DE102020209940B4 (de) 2020-08-06 2020-08-06 Verfahren zum Betrieb eines Kochfelds

Publications (1)

Publication Number Publication Date
EP3951268A1 true EP3951268A1 (fr) 2022-02-09

Family

ID=77155614

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21188675.9A Pending EP3951268A1 (fr) 2020-08-06 2021-07-30 Plaque de cuisson et procédé de fonctionnement d'une plaque de cuisson

Country Status (2)

Country Link
EP (1) EP3951268A1 (fr)
DE (1) DE102020209940B4 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10256464A1 (de) * 2002-12-03 2004-06-17 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zur Steuerung eines elektrischen Geräts und Einschaltsicherung für elektrische Geräte
EP2063181A2 (fr) * 2007-11-21 2009-05-27 E.G.O. Elektro-Gerätebau GmbH Champ de cuisson et procédé de fonctionnement d'un champ de cuisson
DE102009020905A1 (de) * 2009-05-12 2010-12-09 Diehl Ako Stiftung & Co. Kg Kochfeld
EP2914061A1 (fr) * 2012-10-24 2015-09-02 Panasonic Intellectual Property Management Co., Ltd. Dispositif de chauffage par induction
EP3038431A1 (fr) * 2014-12-26 2016-06-29 LG Electronics Inc. Circuit d'attaque pour cuiseur, système d'entraînement de cuisinière, cuisinière et procédé de pilotage de cuisinière
US20180259190A1 (en) * 2012-04-16 2018-09-13 Whirlpool Corporation Lighted signals to provide direction to user

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100231506A1 (en) 2004-09-07 2010-09-16 Timothy Pryor Control of appliances, kitchen and home

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10256464A1 (de) * 2002-12-03 2004-06-17 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zur Steuerung eines elektrischen Geräts und Einschaltsicherung für elektrische Geräte
EP2063181A2 (fr) * 2007-11-21 2009-05-27 E.G.O. Elektro-Gerätebau GmbH Champ de cuisson et procédé de fonctionnement d'un champ de cuisson
DE102009020905A1 (de) * 2009-05-12 2010-12-09 Diehl Ako Stiftung & Co. Kg Kochfeld
US20180259190A1 (en) * 2012-04-16 2018-09-13 Whirlpool Corporation Lighted signals to provide direction to user
EP2914061A1 (fr) * 2012-10-24 2015-09-02 Panasonic Intellectual Property Management Co., Ltd. Dispositif de chauffage par induction
EP3038431A1 (fr) * 2014-12-26 2016-06-29 LG Electronics Inc. Circuit d'attaque pour cuiseur, système d'entraînement de cuisinière, cuisinière et procédé de pilotage de cuisinière

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Publication number Publication date
DE102020209940A1 (de) 2022-02-10
DE102020209940B4 (de) 2022-11-03

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