EP3855076A1 - Table de cuisson portable et procédé de fonctionnement d'une table de cuisson portable - Google Patents

Table de cuisson portable et procédé de fonctionnement d'une table de cuisson portable Download PDF

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Publication number
EP3855076A1
EP3855076A1 EP20152906.2A EP20152906A EP3855076A1 EP 3855076 A1 EP3855076 A1 EP 3855076A1 EP 20152906 A EP20152906 A EP 20152906A EP 3855076 A1 EP3855076 A1 EP 3855076A1
Authority
EP
European Patent Office
Prior art keywords
weight
cooking
portable
cooking hob
detection unit
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Withdrawn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
EP20152906.2A
Other languages
German (de)
English (en)
Inventor
Massimo Zangoli
Massimo Nostro
Alex Viroli
Claudio Paolini
Elia SCHIARATURA
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.)
Electrolux Appliances AB
Original Assignee
Electrolux Appliances AB
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 Electrolux Appliances AB filed Critical Electrolux Appliances AB
Priority to EP20152906.2A priority Critical patent/EP3855076A1/fr
Priority to PCT/EP2021/050383 priority patent/WO2021148270A1/fr
Publication of EP3855076A1 publication Critical patent/EP3855076A1/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Withdrawn legal-status Critical Current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
    • F24C15/10—Tops, e.g. hot plates; Rings
    • F24C15/107—Pan supports or grates therefor

Definitions

  • the present invention relates to a portable cooking hob for the thermal treatment of products, in particular food products.
  • the present invention also relates to a method of operating of a portable cooking hob for the thermal treatment of products, in particular food products.
  • Portable cooking hobs are known for the preparation of food products by means of thermal conditioning of the food products while being placed within a respective cooking vessel, such as a pan, kettle or pot.
  • a typical portable cooking hob comprises at least one cooking surface being configured to support, in use, one respective cooking vessel and being selectively controllable so as to heat e.g. by means of an electrical resistance or induction heating, the respective cooking vessel and, accordingly, also the food product being placed within the respective cooking vessel.
  • One aim of the present invention is to provide for a cooking hob, to overcome, in a straightforward manner, at least one of the aforementioned inconveniences.
  • Another aim of the present invention is to provide for a method for operating a portable cooking hob to overcome, in a straightforward manner, at least one of the aforementioned inconveniences.
  • a portable cooking hob comprising at least:
  • Such a portable cooking hob allows a user to obtain information about the weight of the cooking vessel and/or the product present within the cooking vessel and, by having at hand such information, to follow the progress of the thermal treatment of the product.
  • the weight sensor By arranging the weight sensor at or within the second portion, it is guaranteed that the weight sensor is not subjected to significant temperature changes, which might lead to undesired inaccuracies in the weight measurement.
  • the product being present within the cooking vessel is preferably a food product or a mixture, emulsion, suspension, water, oil or any other combination. It should also be noted that the product may also be defined by a mixture of a liquid such as water, milk or oil and another food product. It should also be noted that the product to be treated may vary throughout the overall cooking process; i.e. it may be possible to add further components (ingredients) to the product during the cooking process. E.g. during a first step of the cooking process, the cooking vessel only contains a first component (e.g. water or oil) and only after the first component having reached a required temperature, a second component (e.g. pasta or meat) is added. However, for the sake of simplicity, in the following, these possible variations in the exact composition of the product are not further distinguished and simply the term "product" is used including such possibilities.
  • a first component e.g. water or oil
  • a second component e.g. pasta or meat
  • the cooking surface is configured to be intended as any portion of the cooking hob, which is configured to support the cooking vessel and which is provided with means of directing in any form thermal energy into and/or to the cooking vessel and/or into the product being present within the cooking vessel.
  • the cooking surface can be defined by a surface for the support of the cooking vessel and an electronic element such as an electrical resistance or an electrical coil, being associated to (e.g. being arranged below of) the surface.
  • an electronic element such as an electrical resistance or an electrical coil
  • Another example is a cooking surface being defined by support elements for supporting the cooking vessel and a nozzle arranged below the support elements and configured to allow for a controlled outflow and burning of a gas.
  • a cooking vessel can be of any type, form and material (e.g. steel, cast iron, aluminium, clay, ceramics, etc.) as long that it is suitable for being placed onto the cooking surface and for the thermal treatment of products being arranged within the cooking vessel. It is clear that the specific type of cooking vessel may differ in dependence on the specific solution on how the thermal energy is provided to the cooking vessel and/or the food product.
  • a non-exhaustive list of cooking vessels are pans, pots and kettles.
  • the term "portable” means that the cooking hob is removably arrangeable on a support surface of e.g. a table and/or a kitchen counter or any other surface suitable to carry the portable cooking hob.
  • the term “portable” means that the cooking hob is self-retaining meaning that no further means of fixing are required when being arranged on the support surface.
  • the term "portable" also indicates that the cooking hob is suited to be temporarily placed on such a support surface.
  • weight sensor includes any sensor, which is configured to directly and/or indirectly determine and/or measure and/or detect the weight of the cooking vessel and/or the product placed therein.
  • weight sensor comprises any sensor, which is configured to provide for weight signals, which are dependent on the acting weight.
  • the weight signal may by a signal about a strain acting on the weight sensor and/or a resistance of the weight sensor and/or a capacity of the weight sensor, which vary in dependence of the weight acting on them.
  • the bottom portion comprises one or more support elements configured to arrange and/or place the portable cooking hob on a support surface and the at least one weight sensor is associated to and/or integrated into at least one support element.
  • the weight sensor is associated and/or integrated to the portion of the cooking hob, which, in use, is placed on the support surface, thereby allowing to improve the measurement sensitivity.
  • the weight detection unit comprises a plurality of weight sensors, each one being associated to and/or being integrated into one respective support element.
  • the weight sensor is of the resistive type, in particular the weight sensor is a strain gage.
  • the weight sensor may be of the capacitance-type or of the Micro-ElectroMechanical System (MEMS) type or of the load-cell type.
  • MEMS Micro-ElectroMechanical System
  • the weight detection unit comprises at least one measurement circuit having at least one Wheatstone bridge comprising the weight sensor.
  • a sensor voltage of the Wheatstone bridge depends on the weight of the cooking vessel and/or the product being present within the cooking vessel.
  • the cooking hob also comprises a control unit configured to control operation of the cooking surface and/or the cooking hob and being operatively connected to the weight detection unit for receiving information signals about the determined and/or detected weight.
  • the control unit receives the data about the determined and/or detected weight, it is possible for the control unit to rely on such information when controlling operation of the cooking surface and/or the cooking hob.
  • control unit is configured to control operation of the portable cooking hob itself and/or of the cooking surface in dependence of the detected and/or determined weight. This allows to improve the efficiency of the thermal treatment process and/or of the final cooking result.
  • control unit is configured to emit a signal when, in use, the measured and/or determined weight reaches a predetermined weight threshold and/or a predetermined weight difference threshold of a weight difference between an initial weight and a current weight as determined and/or measured, in use, by the weight detection unit.
  • the control unit is configured to emit a signal when, in use, the measured and/or determined weight reaches a predetermined weight threshold and/or a predetermined weight difference threshold of a weight difference between an initial weight and a current weight as determined and/or measured, in use, by the weight detection unit.
  • the term "current weight” indicates the determined and/or measured weight of a current weight acquisition.
  • the term “initial weight” indicates a determined and/or measured weight obtained at an earlier time with respect to the current weight, e.g. at the beginning of the thermal treatment process.
  • the term “initial weight” can also indicate a determined and/or measured weight obtained during the thermal treatment process and at an appropriate moment.
  • the cooking hob further comprises a display unit configured to display the weight and/or a weight difference between the initial weight and the current weight. In this way, the user is able to obtain the weight information.
  • the cooking hob also comprises a control interface configured to allow for the setting and/or definition of one or more operating parameters of the cooking surface and/or the cooking hob itself. In this manner, a user can set and/or define the desired cooking result.
  • a method of operating a portable cooking hob comprising at least:
  • Such operation of the portable cooking hob allows a user to obtain information about the weight of the cooking vessel and/or the product present within the cooking vessel and, by having at hand such information, to follow the progress of the thermal treatment of the product.
  • the weight sensor By arranging the weight sensor at or within the second portion, it is guaranteed that the weight sensor is not subjected to significant temperature changes, which might lead to undesired inaccuracies in the weight measurement.
  • a resistance of and/or a capacity of and/or a strain acting on the weighing sensor is determined and/or measured. In this way, a simple manner is obtained to measure a value, which is directly related to the acting weight.
  • operation of the portable cooking hob further comprises the step of supplying power to the cooking surface during which power is supplied to the cooking surface for controlling a thermal treatment of the product.
  • the power supplied to the cooking surface depends on cooking parameters and the weight determined and/or measured during the step of determining and/or measuring and/or a weight difference between an initial weight and a current weight. In this way it is possible to improve the overall efficiency of the thermal treatment process.
  • operation of the portable cooking hob further comprises the step of emitting a signal, during which a signal is emitted if the determined and/or measured weight reaches a predetermined weight threshold and/or a weight difference between an initial weight and a current weight reaches a predetermined weight difference threshold.
  • operation of the cooking hop also comprises the step of displaying, during which the weight and/or a weight difference between an initial weight and a current weight is displayed. This allows the user to obtain the information about the weight.
  • number 1 indicates as a whole a cooking assembly comprising at least a portable cooking hob 2 for the thermal treatment, in particular for the heating, of a product, in particular a food product and/or products such as water, emulsions, suspensions, mixtures or oil or any combination thereof and at least one cooking vessel 3, such as a pot, pan or kettle, containing the product to be thermally treated.
  • cooking assembly 1 could also comprise a lid covering and/or being applied onto cooking vessel 3.
  • cooking hob 2 is configured to be placed on a support surface 4, preferentially having a (substantially) horizontal orientation.
  • support surface 4 is defined by a surface of a table, of a kitchen counter or of any other surface suitable for carrying cooking hob 2.
  • cooking hob 2 comprises at least:
  • weight detection unit 6 is configured to determine and/or measure dynamically the weight; i.e. weight detection unit 6 is configured to obtain, in use, a time-dependent weight profile.
  • weight detection unit 6 is configured to determine and/or measure an initial weight, in particular at the beginning of a thermal treatment process, and a current weight (at a later time with respect to the acquisition of the initial weight) during the thermal treatment process.
  • weight detection unit 6 is also configured to calculate a weight difference between the initial weight and the current weight.
  • main housing 7 comprises at least a top portion 8 configured to carry and/or carrying cooking surface 3 and a bottom portion 9 different and opposite to top portion 8.
  • top and bottom are to be considered with respect to the orientation of cooking hob 2 during operation of cooking hob 2 itself.
  • top portion 8 is interposed between cooking vessel 3 and bottom portion 9.
  • bottom portion 9 faces and/or is adjacent to support surface 4 onto which cooking hob 2 is placed and bottom portion 9 is interposed between top portion 8 and support surface 4.
  • weight detection unit 6 comprises a plurality of weight sensors 10 arranged at and/or within bottom portion 9 and, in particular each one is configured to generate at least one respective weight signal being a function of the weight.
  • weight detection unit 6 is configured to determine and/or measure the weight based on at least one of the weight signals, preferably by all the weight signals, generated, in use, by weight sensors 10.
  • weight detection unit 6 is configured to calculate the weight form the weight signals.
  • main housing 7, in particular bottom portion 9, comprises one or more support elements, in particular support feet 14, in the specific example disclosed four, configured to arrange and/or place cooking hob 2 on support surface 4.
  • support feet 14 are selectively adjustable in height so as to allow controlling of the orientation and/or alignment of cooking hob 2.
  • each weight sensor 10 is associated to and/or integrated into one respective support feet 14.
  • each support foot 14 comprises a respective housing seat 15 (see Figure 2 ) for the respective weight sensor 10.
  • weight sensors 10 are of the resistive type meaning that the respective resistances of weight sensors 10 are a function of the weight.
  • weight sensors 10 are chosen from the group of strain gages, load cells, MEMS and capacity sensors.
  • weight sensors 10 are configured so as to determine the strain acting on weight sensors 10.
  • the strain acting on weight sensors 10 determines, in use, the respective resistances of weight sensors 10.
  • a change of the weight of cooking vessel 3 and/or the product present within cooking vessel 3 results in a change of the acting strain and therewith in a change of the respective resistances.
  • weight detection unit 6 comprises a measurement circuit (only partially shown in Figure 3 ), in particular configured to detect and/or determine the respective resistance or changes in the respective resistance of weight sensors 10.
  • the measurement circuit comprises at least one Wheatstone bridge 16, in particular at least a balanced Wheatstone bridge 16.
  • the Wheatstone bridge 16 comprises at least one weight sensor 10.
  • Wheatstone bridge 16 comprises besides the respective weight sensor 10 three further resistances 17, which are arranged together with the respective weight sensor 10 in a closed circuit.
  • Wheatstone bridge 16 further comprises a power source 18 configured to apply a voltage to the respective Wheatstone bridge 16 and a bridge 19.
  • a sensor current and/or a sensor voltage of each bridge 19 is dependent on the resistance of the respective weight sensor 10, which again is dependent on the weight. In other words, a sensor voltage and/or sensor current of each Wheatstone bridge 16 is dependent on the weight.
  • the measurement circuit also comprises one or more amplifiers (not shown and known as such) each associated to one respective Wheatstone bridge 16 and configured to amplify the sensor voltages for improving sensitivity.
  • cooking hob 2 also comprises a display unit 20 configured to display at least the weight and/or the weight difference determined and/or measured by weight detection unit 6.
  • cooking hob 2 also comprises a control unit (not shown) configured to control operation of cooking hob 2 itself and/or cooking surface 5.
  • control unit is configured to at least control a power supply to cooking surface 5.
  • control unit is operatively connected to weight detection unit 6 and configured to receive (continuously or intermittently) information signals about the determined and/or measured weight and/or the weight difference.
  • control unit is configured to control operation of cooking hob 2 itself and/or of cooking surface 5 in dependence of the measured and/or determined weight.
  • control unit is configured to emit a signal, such as e.g. a sound signal and/or a visual signal and/or a mobile text message, in the case that, in use, the weight reaches a predetermined weight threshold and/or a predetermined weight difference threshold.
  • a signal such as e.g. a sound signal and/or a visual signal and/or a mobile text message
  • cooking hob 2 also comprises a supply unit (not shown) being operationally connected to the control unit and cooking surface 5 and configured to selectively supply, upon control by means of the control unit, energy to cooking surface 5.
  • the energy can be in the form of electrical energy or in the form of a gas to be burned.
  • cooking surface 5 is of the type relying on a power and/or energy input by means of electrical energy.
  • cooking surface 5 is configured to heat by means of an electrical resistance or by means of induction.
  • cooking hob 2 comprises a glass-ceramic surface 21 and cooking surface 5 is defined and/or determined by a respective active portion of glass-ceramic surface 21 and a respective electrical resistance or a respective electrical coil arranged below the respective active portion of glass-ceramic surface 21.
  • cooking surface 5 could be of the type relying on a burning gas.
  • the control unit could be configured to selectively control the volume flow of the gas to cooking surface 5 for controlling the power and/or energy input.
  • the cooking surface could comprise respective support elements for supporting cooking vessel 3 and a nozzle arranged below the respective support elements and configured to allow for a controlled outflow and burning of the gas.
  • cooking hob 2 also comprises a control interface 22 configured to allow for the setting and/or definition of one or more operating parameters of cooking surface 5 and/or cooking hob 2 itself, in particular prior, during and/or after the thermal treatment of the product.
  • control interface 22 is integral to cooking hob 2.
  • control interface 22 comprises a touch display and/or control switches and/or control knobs.
  • control interface 22 could comprise a mobile device provided with a respective software program for setting and/or defining the operating parameters.
  • the operating parameters can be chosen from at least the group of a desired energy input, a desired cooking temperature, a desired cooking time, a predetermined weight threshold and/or a predetermined weight difference threshold.
  • weight detection unit 6 and/or control interface 22 comprises an input interface (not shown) configured to allow a user to clear and/or rest the weight. In this manner, it is e.g. possible for a user to place an empty cooking vessel 3 onto cooking surface 5, to zero the weight and to add the product afterwards; in such a manner it is guaranteed to (substantially) determine and/or measure only the weight of the product.
  • operation of cooking hob 2 comprises at least the step of determining and/or measuring, during which the weight of cooking vessel 3 and/or the product present within cooking vessel 3, is determined and/or measured by weight detection unit 6.
  • each weight sensor 10 generates the respective weight signal and weight detection unit 6 determines and/or measures the weight based on at least one of the weight signals, preferably by considering all the weight signals.
  • the respective resistance of and/or the respective strain acting on weight sensor 10 is determined and/or measured, in particular defining and/or determining the respective weight signal.
  • the step of determining and/or measuring is executed continuously or intermittently.
  • operation of cooking hob 2 also comprises the step of zeroing, during which the weight determined and/or measured is cleared and/or reset.
  • the step of zeroing is activated by operating the input interface.
  • the step of zeroing is activated after placement of cooking vessel 3 onto cooking surface 5 and prior to insertion of (at least a portion of) the product into the cooking vessel 3.
  • operation of cooking hob 2 also comprises the step of calculating a weight difference, during which weight detection unit 6 calculates a weight difference between the initial weight and a current weight.
  • operation of cooking hob 2 also comprises the step of activating the thermal treatment of the product.
  • the step of activating is started after placement of cooking vessel 3 onto cooking surface 5 and the insertion of the product into cooking vessel 3.
  • operation of cooking hob 2 also comprises the step of supplying power to cooking surface 5, during which power is supplied to the cooking surface 5, e.g. in the form of electrical energy or in the form of a gas, for controlling the thermal treatment of the product.
  • the power supplied to cooking surface 5 depends on and/or is controlled in dependence of the cooking parameters and the weight determined and/or measured during the step of determining and/or measuring and/or a weight difference between the initial weight and the current weight.
  • the control unit controls the supply of power to cooking surface 5.
  • the control unit controls the supply unit.
  • operation of cooking hob 2 further comprises the step of emitting a signal, during which a signal is emitted if the weight reaches the predetermined weight threshold and/or the predetermined weight difference threshold.
  • operation of cooking hob 2 also comprises the step of displaying, during which the weight and/or the weight difference is displayed, in particular by means of display unit 20.
  • operation of cooking hob 2 also comprises the step of setting and/or defining, during which one or more operating parameters of cooking surface 5 and/or cooking hob 2 are set and/or defined, in particular by means of control interface 22.
  • the step of setting and/or defining is executed prior, during and/or after the thermal treatment of the product.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cookers (AREA)
EP20152906.2A 2020-01-21 2020-01-21 Table de cuisson portable et procédé de fonctionnement d'une table de cuisson portable Withdrawn EP3855076A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20152906.2A EP3855076A1 (fr) 2020-01-21 2020-01-21 Table de cuisson portable et procédé de fonctionnement d'une table de cuisson portable
PCT/EP2021/050383 WO2021148270A1 (fr) 2020-01-21 2021-01-11 Plaque de cuisson portative et procédé de fonctionnement de plaque de cuisson portative

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20152906.2A EP3855076A1 (fr) 2020-01-21 2020-01-21 Table de cuisson portable et procédé de fonctionnement d'une table de cuisson portable

Publications (1)

Publication Number Publication Date
EP3855076A1 true EP3855076A1 (fr) 2021-07-28

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EP20152906.2A Withdrawn EP3855076A1 (fr) 2020-01-21 2020-01-21 Table de cuisson portable et procédé de fonctionnement d'une table de cuisson portable

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EP (1) EP3855076A1 (fr)
WO (1) WO2021148270A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022207879B3 (de) 2022-07-29 2023-12-21 E.G.O. Elektro-Gerätebau GmbH Kochfeldeinrichtung mit Wiegefunktion

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008055633A2 (fr) * 2006-11-07 2008-05-15 Santoro, Giuseppe Dispositif de cuisson doté d'un moyen de détection du poids
KR101102217B1 (ko) * 2009-08-28 2012-01-05 김헌준 가스레인지용 안전 장치
KR20140039688A (ko) * 2012-09-25 2014-04-02 이흥우 중량 감지식 안전장치가 구비된 가스렌지
EP3182020A1 (fr) * 2015-12-18 2017-06-21 E.G.O. ELEKTRO-GERÄTEBAU GmbH Table de cuisson
CN206563326U (zh) * 2017-01-22 2017-10-17 九阳股份有限公司 一种锅具支架以及具有该锅具支架的灶具

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008055633A2 (fr) * 2006-11-07 2008-05-15 Santoro, Giuseppe Dispositif de cuisson doté d'un moyen de détection du poids
KR101102217B1 (ko) * 2009-08-28 2012-01-05 김헌준 가스레인지용 안전 장치
KR20140039688A (ko) * 2012-09-25 2014-04-02 이흥우 중량 감지식 안전장치가 구비된 가스렌지
EP3182020A1 (fr) * 2015-12-18 2017-06-21 E.G.O. ELEKTRO-GERÄTEBAU GmbH Table de cuisson
CN206563326U (zh) * 2017-01-22 2017-10-17 九阳股份有限公司 一种锅具支架以及具有该锅具支架的灶具

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022207879B3 (de) 2022-07-29 2023-12-21 E.G.O. Elektro-Gerätebau GmbH Kochfeldeinrichtung mit Wiegefunktion

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