EP2852249B1 - Dispositif de plaque de cuisson - Google Patents

Dispositif de plaque de cuisson Download PDF

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Publication number
EP2852249B1
EP2852249B1 EP14183193.3A EP14183193A EP2852249B1 EP 2852249 B1 EP2852249 B1 EP 2852249B1 EP 14183193 A EP14183193 A EP 14183193A EP 2852249 B1 EP2852249 B1 EP 2852249B1
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EP
European Patent Office
Prior art keywords
switching
unit
switching element
sensor unit
control 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.)
Active
Application number
EP14183193.3A
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German (de)
English (en)
Other versions
EP2852249A1 (fr
Inventor
Daniel Anton Falcon
Sergio Llorente Gil
Diego Puyal Puente
Isidro Urriza Parroque
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.)
BSH Hausgeraete GmbH
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BSH Hausgeraete GmbH
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Publication date
Application filed by BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Publication of EP2852249A1 publication Critical patent/EP2852249A1/fr
Application granted granted Critical
Publication of EP2852249B1 publication Critical patent/EP2852249B1/fr
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Anticipated expiration legal-status Critical

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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
    • H05B6/06—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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/002—Monitoring or fail-safe circuits
    • H01H2047/006—Detecting unwanted movement of contacts and applying pulses to coil for restoring to normal status
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/002—Monitoring or fail-safe circuits

Definitions

  • the invention relates to a hob device according to the preamble of claim 1.
  • the object of the invention is in particular to provide a generic device with improved properties in terms of high flexibility and / or low cost.
  • the object is achieved by the features of
  • Claim 11 relates to a method for operating a hob device.
  • the invention is based on a cooktop device, in particular an induction cooktop device, with at least one switching unit which comprises at least one switching element which is intended to switch reversibly between at least two switching states and to guide, in particular conduct, a heating element current in at least one operating state, and with at least one sensor unit at least for a detection of a contact production of the switching element. It is proposed that the sensor unit is arranged at least substantially outside at least one circuit which comprises the switching unit.
  • a “switching element” is to be understood in particular an electrical and / or electronic element which is provided to produce and / or to separate an electrically conductive connection between two points, in particular contact points of the switching element.
  • the switching element has at least one control contact, via which the switching element can be switched.
  • the switching element is provided to receive by means of the control contact at least one control signal, in particular of at least one control unit, and to change at least one switching state as a function of the control signal.
  • the switching element is designed as a mechanical and / or electromechanical switching element.
  • the switching element is designed as an electromagnetic switching element, in particular as a relay.
  • the switching element comprises at least one switching part which is provided to reversibly establish and / or interrupt a connection between at least one first contact point and at least one second contact point during a switching operation of the switching element.
  • the switching part is at least substantially fixedly arranged at the first contact point.
  • the first contact point is designed as a fixed contact.
  • the second contact point is designed as a changeover contact.
  • the switching part is provided to establish a connection between the first contact point and the second contact point in a first switching state of the switching element.
  • the switching part is provided to disconnect a connection between the first contact point and the second contact point in a second switching state of the switching element and / or to establish a connection between the first contact point and at least one third contact point.
  • the third contact point is designed as a changeover contact.
  • the contact points are designed as power contacts.
  • the switching part is designed as an anchor.
  • the switching part is intended to be set in motion by at least one electrical and / or magnetic driving force.
  • the switching unit comprises at least 2, in particular at least 4, advantageously at least 6, particularly advantageously at least 8 switching elements.
  • the switching unit comprises at most 80, in particular at most 60, advantageously at most 40, particularly advantageously at most 20, preferably at most 10 switching elements.
  • the switching element is intended to "reversibly" to switch between at least two switching states, should be understood in particular that the switching element is intended to switch at least for a first time from a first switching state to a second switching state and to a second time, which is in particular temporally spaced at the first time to switch from the second switching state to the first switching state.
  • a switching operation of the switching element is reversible, advantageously as often executable, in particular repeatable.
  • the cooktop device comprises at least one supply electronics at least for generating the Schuelementstroms.
  • the supply electronics comprises at least one heating frequency unit at least for generating heating element current for operating and / or for supplying at least one heating element.
  • the cooktop device comprises at least one heating element for heating up cooking utensils.
  • the cooktop device comprises at least one control unit at least for controlling the supply electronics and / or the heating element and / or the switching unit.
  • a "control unit” should in particular be understood to mean an electronic unit which is preferably at least partially integrated in a control and / or regulating unit of a cooktop and which is preferably provided to control and / or regulate at least the supply electronics.
  • the control unit preferably comprises a computing unit and, in particular in addition to the computing unit, a memory unit with a control and / or regulating program stored therein, which is intended to be executed by the computing unit.
  • the control unit comprises at least one driver electronics at least for generating a control signal for switching the switching element.
  • the control unit is provided to control the supply electronics for operating the heating element, in order in particular to generate the heating element current.
  • the control unit is provided to effect at least one switching operation of the switching element.
  • control unit is intended to transmit at least one control signal to the switching element, in particular to the control contact of the switching element, to stimulate the switching element to a switching operation, in particular to put the switching part of the switching element in motion.
  • the heating frequency unit, the switching unit, in particular with the switching element, and the heating element are part of a common, in particular electrical, advantageously closed circuit.
  • the switching element is provided to enable and / or block supply of the heating element with heating element current as a function of a switching state.
  • the switching element is provided to supply the heating element with Schuelementstrom in the open switching state To block.
  • the switching element is provided to interrupt the circuit comprising the switching unit in the open switching state.
  • the switching element is provided to allow a supply of the heating element with Walkerelementstrom in the closed switching state.
  • the switching element is provided to close in the closed switching state, the circuit comprising the switching unit.
  • the switching element is provided, in the closed switching state, to lead, in particular to conduct, a heating element current flowing through the circuit comprising the switching unit.
  • a "sensor unit” is to be understood in particular as meaning a unit having at least one sensor element which is provided to measure and / or detect and / or detect at least one parameter for detection of a contact production of the switching element.
  • the sensor unit has at least one microphone which is provided for a detection of a contact production of the switching element.
  • the parameter is designed as an acoustic characteristic.
  • the sensor unit is provided to detect at least a number of impacts of the switching part on one of the contact points.
  • the sensor unit is provided to detect at least one acoustic energy of a contact production of the switching element.
  • the sensor unit has at least one time sensor which is provided to detect at least one duration of a bouncing process of the switching part on one of the contact points.
  • a "microphone” is to be understood in particular as an element which is intended to convert at least one acoustic signal, in particular a sound wave, advantageously a sound pressure wave, into at least one electrical signal, in particular at least one electrical voltage, at least in one operating state, in particular to transform.
  • the microphone is intended to detect acoustic signals from a frequency range between 100 Hz and 16000 Hz, at least in one operating state.
  • the cooktop device advantageously in addition to the sensor unit for detecting the contact production of the switching element, comprises at least one further sensor unit, which is provided at least for a detection of an electrical parameter of the circuit comprising the switching unit.
  • the electrical parameter is designed as an electrical voltage and / or as an electrical current strength and / or as a frequency of an electrical current and / or as a resistance.
  • the sensor unit could comprise an acceleration sensor, which could be provided to detect an acceleration of the switching part for detecting a contact-making of the switching element.
  • the sensor unit is provided for detecting a position and / or a movement of the switching part by means of a light beam, in particular a laser beam, for a detection of a contact production of the switching element.
  • the characteristic would be designed as an optical characteristic.
  • the sensor unit comprises a multi-pole change-over switch for a detection of a contact production of the switching element to a measurement of a switching state of the switching element.
  • the sensor unit comprises a further switching element whose switching part is mechanically connected to the switching part of the switching element, thereby to enable the measurement of a switching state of the switching element.
  • the sensor unit and the switching unit are arranged at least substantially without electrical interaction with each other.
  • the sensor unit and the switching unit are coupled at least in an operating state only via acoustic signals, in particular via sound waves.
  • the sensor unit and the switching unit are supplied at least in an operating state of different voltage transformers.
  • the sensor unit and the switching unit are operated at least in an operating state of different phases.
  • the sensor unit and the switching unit are operated at least in an operating state of a single, common phase.
  • the sensor unit is provided to detect the contact production of the switching element at least substantially independently of a current flowing through the switching element current.
  • the sensor unit and the switching unit are arranged at a distance from one another.
  • the sensor unit and the switching unit have a distance of at least 2 cm, in particular of at least 4 cm, advantageously of at least 5 cm.
  • the sensor unit and the switching unit have a distance of at most 50 cm, in particular of at most 30 cm, advantageously of at most 20 cm.
  • the inventive design can be achieved in particular a high flexibility and / or low cost.
  • the contact production of the switching element can be detected safely and / or precisely.
  • the contact production of the switching element can be detected wirelessly, in particular while avoiding a direct electrical connection between the switching unit and the sensor unit.
  • a functionality of the switching element can be monitored. In particular, possible malfunctions can be detected early.
  • a durable design can be achieved.
  • the sensor unit has at least one, in particular exactly one sensor element which is provided at least for a detection of a contact production of at least two, in particular of at least four, advantageously of at least six, particularly advantageous of all switching elements of the switching unit.
  • the control unit is provided to switch a first switching element of the switching unit at a different time than a second switching element of the switching unit, in particular to avoid a superposition of switching noise and / or to enable a precise measurement of a contact production of the switching element.
  • the control unit is provided to carry out a detection of a contact production of a switching element at a time, which is formed spaced at a time of further contact production of other switching elements.
  • control unit is provided, in particular before an activation of the switching element, advantageously before a contact preparation of the switching element, to predict a contact production of the switching element.
  • control unit is provided to determine at least one switching time window in which a switching operation of a switching element is to be expected.
  • control unit is provided for interpreting a signal detected by the sensor element within the switching time window as switching of the switching element.
  • control unit is provided to assign a signal detected by the sensor element to the switching element, if that of the sensor element detected signal is arranged within the switching time window.
  • control unit is provided to effect exactly one switching operation of exactly one switching element within the switching time window.
  • control unit is provided to refrain from evaluating signals detected by the sensor element during a switching operation of at least two switching elements within the switching time window.
  • a cost-effective and / or flexible design can be achieved.
  • a small number of sensor elements can be achieved.
  • a contact production of a plurality of switching elements can be detected.
  • the cooktop device comprises at least one control unit which is provided to calculate at least one switchover duration of the switching element as a function of the detection of a contact production of the switching element.
  • the switching period is formed as a period of time that the switching element requires from activation to contact making.
  • the switching period is formed as a period of time that the switching part needs to move from the first contact point to the second contact point.
  • the switching part is in motion during the switching period.
  • the sensor unit comprises at least one transmission module for transmitting a switching characteristic to the control unit.
  • the control unit comprises at least one receiving module for receiving switching parameters transmitted by the sensor unit. This can be done in particular a contact of the switching element at a desired time.
  • control unit be provided for the switching period of the switching element after at least substantially 25, in particular after at least substantially 50, advantageously after at least substantially 75, more preferably after at least substantially 100, preferably after at least substantially 150, Particularly advantageously after at least substantially 200, advantageously after at least substantially 500, in particular after at least substantially 1000 switching operations of the switching element to redetermine.
  • control unit is provided to the switching period of the switching element according to at least substantially, in particular after at least substantially 50, advantageously after at least substantially 75, particularly preferably after at least substantially 100, preferably after at least substantially 150, particularly advantageously after at least substantially 200, advantageously after at least substantially 500, in particular after at least substantially new 1000 switching operations of the switching element in response to a new detection of a contact production of the switching element.
  • the sensor unit is provided after at least substantially 25, in particular after at least substantially 50, advantageously after at least substantially 75, particularly preferably after at least substantially 100, preferably after at least substantially 150, particularly advantageously after at least substantially 200, advantageous after at least substantially 500, in particular after at least substantially 1000 switching operations of the switching element to detect a contact production of the switching element new.
  • control unit is provided to redetermine the switching duration of the switching element when a temperature, in particular an ambient temperature and / or a temperature of the switching element, changes. It is also conceivable that the control unit is provided to redetermine the switching period of the switching element when changing a magnetic field and / or when changing an activation voltage of the switching element and / or changing an activation current of the switching element.
  • the control unit is provided for limiting the switching period of the switching element, in particular merely in FIG Distance of at least substantially 25 switching operations of the switching element to redetermine.
  • a long-life cooktop device can be achieved.
  • a regular control of the switching element can be provided, whereby a possible malfunction can be detected early.
  • control unit is provided to take into account at least one distance of the sensor unit to the switching unit when determining the switching period of the switching element.
  • control unit is provided to make at least one switching correction.
  • in the storage unit of the control unit at least one distance of the sensor unit, in particular of the sensor element, to the switching unit, in particular to a switching element of the switching unit, advantageously to all switching elements of the switching unit stored.
  • the control unit is provided to determine by means of the stored distances a period of time between a contact production of the switching element and a detection of a contact production of the switching element.
  • control unit is provided to take into account the determined time duration between a contact production of the switching element and a detection of a contact production of the switching element in a determination of the switching time of the switching element. As a result, in particular a precise determination of the switching time can be achieved.
  • control unit be provided to set at least one switch-off duration of supply electronics, which is provided in at least one operating state for supplying at least one heating element with heating element current, as a function of the switchover duration.
  • control unit is provided to deactivate the supply electronics, which is provided at least in an operating state for supplying at least one heating element with Schuelementstrom during the switching period of the switching element.
  • control unit is provided to switch the switching element in at least substantially de-energized state.
  • control unit is provided to deactivate the supply electronics in a, in particular temporally seen range of a zero crossing of a mains voltage.
  • the switch-off duration is arranged around a region of a zero crossing of the mains voltage, in particular in order to achieve low inrush currents and / or switch-off currents.
  • a durable design and / or a high electrical efficiency can be achieved.
  • a short turn-off of the power electronics can be achieved.
  • a low inrush current can be achieved.
  • Fig. 1 shows a cooktop 38 according to the invention, which is designed as an induction cooktop, with a cooktop 36 according to the invention, which is designed as an induction cooktop.
  • the cooktop 36 includes a cooktop device 10 that is formed as an induction cooktop device.
  • the hob device 10 has a base body 40 for setting up cooking utensils.
  • the main body 40 is formed as a hob plate.
  • the hob device 10 has a plurality of heating elements (not shown), which are arranged below the main body 40.
  • the heating elements, which are designed as induction heating elements, are each provided to heat cooking utensils placed on the base body 40 above the heating elements.
  • the cooktop device 10 has an operating unit 42 for operating input of operating parameters in an area assigned to an operator in the installed state.
  • the operating parameters are designed as a selection and / or modification of a heating zone and / or as an adjustment of a heating power and / or heating power density of a heating zone.
  • the operating unit 42 is provided for optically outputting a value of an operating parameter to an operator.
  • the operating unit is provided for an acoustic output of a value of an operating parameter to an operator.
  • the hob device 10 has a control unit 32, which is intended to summarize covered by the cooking utensils heating elements to a common heating zone, which is associated with the cooking utensils.
  • the control unit 32 is provided, depending on the means of the control unit 42nd entered operating parameters to perform actions and / or to change settings.
  • the hob device 10 comprises a supply electronics 34 which is provided to supply the heating elements with Walkerelementstrom.
  • the supply electronics 34 has heating frequency units (not shown) for generating the heating element current.
  • the hob device 10 has a switching unit 12 (see. Fig. 2 ).
  • the switching unit 12 is arranged on an electronic circuit board 44 of the hob device 10.
  • the switching unit 12 is equipped with seven switching elements 14, 16, 18, 20, 22, 24, 26.
  • Each switching element 14, 16, 18, 20, 22, 24, 26 is provided for a reversible switching between two switching states. In a switching operation between two switching states generates each of the switching elements 14, 16, 18, 20, 22, 24, 26, which are each designed as a relay, a switching noise.
  • the heating frequency units of the supply electronics 34, the switching elements 14, 16, 18, 20, 22, 24, 26 of the switching unit 12 and the heating elements are part of a common circuit.
  • the circuit comprising the switching unit 12 with the switching elements 14, 16, 18, 20, 22, 24, 26 is formed as an electrical, closed circuit.
  • Each switching element 14, 16, 18, 20, 22, 24, 26 interrupts in the open switching state the circuit comprising the switching unit 12.
  • Each switching element 14, 16, 18, 20, 22, 24, 26 allows, in the closed switching state, a supply of the heating elements with Bankelementstrom.
  • Each switching element 14, 16, 18, 20, 22, 24, 26 closes in the closed switching state, the circuit comprising the switching unit 12.
  • Each switching element 14, 16, 18, 20, 22, 24, 26 leads, in the closed switching state, a heating element current flowing through the circuit comprising the switching unit 12.
  • the switching elements 14, 16, 18, 20, 22, 24, 26 lead in an operating state, the Schuelementstrom.
  • the cooktop device 10 comprises a sensor unit 28 for detecting a contact production of the switching elements 14, 16, 18, 20, 22, 24, 26.
  • the sensor unit 28 is arranged on the electronic circuit board 44.
  • the sensor unit 28 is arranged at a distance from the switching unit 12.
  • a distance of the sensor unit 28 to a nearest switching element 24 of the switching unit 12 is substantially 2 cm.
  • a distance of the sensor unit 28 to a remotely located switching element 14 of the switching unit 12 is substantially 20 cm.
  • a distance of the sensor unit 28 to the other switching elements 16, 18, 20, 22, 26 of the switching unit 12 is substantially between 2 cm and 20 cm.
  • the sensor unit 28 is disposed outside of the circuit comprising the switching unit 12.
  • the sensor unit 28 is operated in an operating state of a different phase than the circuit comprising the switching unit 12. In an alternative embodiment of the invention, it is conceivable that the sensor unit is operated in an operating state of the same phase as the circuit comprising the switching unit.
  • the sensor unit 28 and the switching unit 12 are arranged electrically independently.
  • the sensor unit 28 has exactly one sensor element 30, which is provided for detecting contact production of all the switching elements 14, 16, 18, 20, 22, 24, 26 of the switching unit 12.
  • the sensor unit 28 detects a contact production of the switching elements 14, 16, 18, 20, 22, 24, 26 by means of the sensor element 30.
  • the sensor unit 28 detects a contact production of the switching elements 14, 16, 18, 20 , 22, 24, 26 offset in time.
  • the sensor unit 28 detects contact making of a first switching element 14, 16, 18, 20, 22, 24, 26.
  • a second time window spaced in time with the first time window, the sensor unit 28 detects contact making of a second switching element 14, 16, 18, 20, 22, 24, 26.
  • the sensor unit 28 For a detection of the contact-making of the switching elements 14, 16, 18, 20, 22, 24, 26, the sensor unit 28 has a microphone.
  • the sensor element 30 is designed as a microphone.
  • the sensor unit 28 detects a switching noise of the switching elements 14, 16, 18, 20, 22, 24, 26.
  • the sensor unit 28 is coupled to the switching unit 12 via sound.
  • the sensor unit 28 detects contact making of one of the switching elements 14, 16, 18, 20, 22, 24, 26 when exactly one of the switching elements 14, 16, 18, 20, 22, 24, 26 switches.
  • the control unit 32 causes a switching operation of the switching elements 14, 16, 18, 20, 22, 24, 26.
  • the control unit 32 controls a driver electronics 46, the switching elements 14, 16, 18, 20, 22, 24, 26 to a Switching action is stimulated (see. Fig. 3 ).
  • the control of a switching element 14, 16, 18, 20, 22, 24, 26 by means of the driver electronics 46 is formed as the starting point of a switching period of the switching element 14, 16, 18, 20, 22, 24, 26.
  • the control unit 32 causes a switching of one of the switching elements 14, 16, 18, 20, 22, 24, 26.
  • the control unit 32 determines a switching time window, in which a switching operation of the switching element 14, 16, 18, 20, 22, 24, 26 is to be expected.
  • the control unit 32 interprets one of the sensor element 30 signal detected within the switching time window as switching of the switching element 14, 16, 18, 20, 22, 24, 26.
  • the control unit 32 calculates a function of the detection of contact making of the switching element 14, 16, 18, 20, 22, 24, 26 a Switching time of the switching element 14, 16, 18, 20, 22, 24, 26.
  • the contact production of the switching element 14, 16, 18, 20, 22, 24, 26 is the end point of a switching period of the switching element 14, 16, 18, 20, 22nd , 24, 26 are formed.
  • the sensor unit 28 comprises a transmitting module for transmitting a switching characteristic to the control unit 32.
  • the control unit 32 comprises a receiving module for receiving switching parameters transmitted by the sensor unit 28. After a detection of a contact production of a switching element 14, 16, 18, 20, 22, 24, 26, the detected signal is converted by the sensor unit 28 into an analog signal. It is also conceivable that the sensor unit comprises an amplifier for amplifying the detected signal. In addition, the sensor unit could have a filter and / or an analog-to-digital converter. After conversion of the detected signal, the sensor unit 28 transmits the analog signal to the control unit 32.
  • the sensor unit 28 After substantially 100 switching operations of one switching element 14, 16, 18, 20, 22, 24, 26, the sensor unit 28 detects a contact production of the switching element 14, 16, 18, 20, 22, 24, 26. After substantially 100 switching operations of each switching element 14, 16, 18, 20, 22, 24, 26, the sensor unit 28 detects a contact production of the switching elements 14, 16, 18, 20, 22, 24, 26.
  • the control unit 32 determines the switching period of the switching elements 14, 16, 18, 20, 22, 24, 26 after substantially 100 switching operations of the switching elements 14, 16, 18, 20, 22, 24, 26.
  • the control unit 32 uses the newly detected by the sensor unit 28 switching characteristics, the control unit 32 has received from the sensor unit 28.
  • the control unit 32 takes into account the distance of the sensor unit 28 to the switching unit 12 when determining the switching time of the switching elements 14, 16, 18, 20, 22, 24, 26.
  • a distance of each switching element 14, 16, 18, 20, 22, 24, 26 is stored in a storage unit of the control unit 32.
  • the control unit 32 causes a switching operation of the most remote switching element 14 of the switching unit 12
  • the control unit 32 takes a distance of substantially 20 cm.
  • the control unit 32 a switching operation of the nearest switching element 24 of the switching unit 12, so the control unit 32 takes a distance of substantially 2 cm.
  • the control unit 32 defines a switch-off duration of the supply electronics 34, which is provided in an operating state for supplying the heating elements with heating element current, as a function of the switch-over duration.
  • the control unit 32 initiates a switching operation of a switching element 14, 16, 18, 20, 22, 24, 26 and calculates a switching time window in which a switching operation of the switching element 14, 16, 18, 20, 22, 24, 26 is to be expected.
  • the sensor unit 28 transmits a switching characteristic to the control unit 32.
  • the control unit 32 interprets a signal detected by the sensor element 30 within the switching time window as switching of the switching element 14, 16, 18, 20, 22, 24, 26. Subsequently, the control unit 32 activates the supply electronics 34.
  • control unit is provided to calculate, depending on the detection of a contact production of the switching element at least one pulse duration to a drive of the movable switching part of the switching element, in particular to achieve a low-noise contact production of the switching element.
  • control unit is provided to effect switching of the switching element during the pulse duration, whereupon the movable switching part is set in motion starting from a first contact point in the direction of a second contact point.
  • control unit is provided after the end of the pulse duration to interrupt a supply of the switching element with electric current, wherein the movable switching part in particular moves on because of the inertia.
  • the switching part is slowed down in a movement after interrupting the supply of the switching element with electric current by a frictional force and / or spring force.
  • the control unit is provided to set a pulse duration in order to achieve reaching the second contact point by the switching part at a speed of at least substantially 0 m / s.
  • the control unit is provided, shortly before reaching the second contact point by the movable switching element, at least one supply of the switching elements, in particular the Driver electronics, to activate a supply.
  • the control unit is provided to adjust the pulse duration in a detection of a noise by means of the sensor unit, in particular to achieve a low-noise contact production of the switching element.
  • the control unit is provided to adjust the pulse duration at standstill of the switching part before reaching the second contact point, in particular to achieve a low-noise contact production of the switching element.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electric Stoves And Ranges (AREA)
  • Electric Ovens (AREA)

Claims (11)

  1. Dispositif de table de cuisson, notamment dispositif de table de cuisson par induction, comprenant au moins une unité de commutation (12) qui comprend au moins un élément de commutation (14, 16, 18, 20, 22, 24, 26) qui est ménagé pour commuter de manière réversible entre au moins deux états de commutation, et, dans au moins un état de fonctionnement, pour conduire un courant d'élément chauffant, et comprenant au moins une unité de capteur (28) au moins pour une détection d'un établissement de contact de l'élément de commutation (14, 16, 18, 20, 22, 24, 26), caractérisé en ce que l'unité de capteur (28) est disposée au moins essentiellement à l'extérieur d'au moins un circuit de commutation qui comprend l'unité de commutation (12), l'unité de capteur (28) et l'unité de de commutation (12) étant disposées au moins essentiellement de manière électrique sans interaction réciproque.
  2. Dispositif de table de cuisson selon la revendication 1, caractérisé en ce que l'unité de capteur (28) présente au moins un microphone.
  3. Dispositif de table de cuisson selon l'une quelconque des revendications précédentes, caractérisé en ce que l'unité de capteur (28) et l'unité de commutation (12) sont disposées de manière électriquement indépendante.
  4. Dispositif de table de cuisson selon l'une quelconque des revendications précédentes, caractérisé en ce que l'unité de capteur (28) présente au moins un élément de capteur (30) qui est au moins ménagé pour une détection d'un établissement de contact d'au moins deux éléments de commutation (14, 16, 18, 20, 22, 24, 26) de l'unité de commutation (12).
  5. Dispositif de table de cuisson selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément de commutation (14, 16, 18, 20, 22, 24, 26) est réalisé comme relais.
  6. Dispositif de table de cuisson selon l'une quelconque des revendications précédentes, caractérisé par au moins une unité de commande (32) qui est ménagée pour calculer au moins une durée de commutation de l'élément de commutation (14, 16, 18, 20, 22, 24, 26) en fonction de la détection d'un établissement de contact de l'élément de commutation (14, 16, 18, 20, 22, 24, 26).
  7. Dispositif de table de cuisson selon la revendication 6, caractérisé en ce que l'unité de commande (32) est ménagée pour nouvellement déterminer la durée de commutation de l'élément de commutation (14, 16, 18, 20, 22, 24, 26) après au moins essentiellement 25 opérations de commutation de l'élément de commutation (14, 16, 18, 20, 22, 24, 26).
  8. Dispositif de table de cuisson selon la revendication 6, caractérisé en ce que l'unité de commande (32) est ménagée pour prendre en considération au moins un écart de l'unité de capteur (28) par rapport à l'unité de commutation (12) lors d'une détection de la durée de commutation de l'élément de commutation (14, 16, 18, 20, 22, 24, 26).
  9. Dispositif de table de cuisson selon la revendication 6, caractérisé en ce que l'unité de commande (32) est ménagée, en fonction de la durée de commutation, pour déterminer au moins une durée d'arrêt d'un dispositif électronique d'alimentation (34), lequel est ménagé pour une alimentation en courant d'élément chauffant d'au moins un élément chauffant dans au moins un état de fonctionnement.
  10. Table de cuisson comprenant au moins un dispositif de table de cuisson (10) selon l'une quelconque des revendications 1 à 9.
  11. Procédé de fonctionnement d'un dispositif de table de cuisson (10) selon l'une quelconque des revendications 1 à 9, comprenant au moins une unité de commutation (12) qui comprend au moins un élément de commutation (14, 16, 18, 20, 22, 24, 26), une commutation entre au moins deux états de commutation étant réalisée de manière réversible par l'élément de commutation (14, 16, 18, 20, 22, 24, 26) et un courant d'élément chauffant étant conduit dans au moins un état de fonctionnement, et comprenant au moins une unité de capteur (28) au moyen de laquelle au moins un établissement de contact de l'élément de commutation (14, 16, 18, 20, 22, 24, 26) est détecté, l'unité de capteur (28) étant disposée au moins essentiellement à l'extérieur d'au moins un circuit de commutation qui comprend l'unité de commutation (12), et l'unité de capteur (28) et l'unité de commutation (12) étant disposées au moins essentiellement de manière électrique sans interaction réciproque.
EP14183193.3A 2013-09-18 2014-09-02 Dispositif de plaque de cuisson Active EP2852249B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES201331355A ES2531904B1 (es) 2013-09-18 2013-09-18 Dispositivo de encimera de cocción

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EP2852249A1 EP2852249A1 (fr) 2015-03-25
EP2852249B1 true EP2852249B1 (fr) 2017-04-12

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ES (2) ES2531904B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10260753B2 (en) 2015-10-28 2019-04-16 BSH Hausgeräte GmbH Domestic-appliance heating device

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DE3712242A1 (de) * 1987-04-10 1988-10-27 Thomson Brandt Gmbh Schaltung zur stromversorgung einer induktiven kochstelle
US4952766A (en) * 1987-10-26 1990-08-28 Microwave Products Of America, Inc. Sensor and pop detector for microwave popcorn control
US5096725A (en) * 1989-01-11 1992-03-17 Kim Kyung H Automatic cooking method
ES2042359B1 (es) 1991-04-29 1995-10-01 Fagor S Coop Ltda Sistema para la medida de los tiempos de conmutacion en reles de potencia.
WO2009135519A1 (fr) * 2008-05-09 2009-11-12 Siemens Aktiengesellschaft Procédé et dispositif de commande d'actionneur magnétique
DE102008046374B3 (de) * 2008-09-09 2009-12-31 Siemens Aktiengesellschaft Schaltgerät
ES2386456B1 (es) * 2010-06-28 2013-07-19 BSH Electrodomésticos España S.A. Dispositivo de encimera de coccion
ES2396336B1 (es) * 2010-11-10 2014-02-11 BSH Electrodomésticos España S.A. Dispositivo de calentamiento de campo de cocción y campo de cocción con dicho dispositivo

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10260753B2 (en) 2015-10-28 2019-04-16 BSH Hausgeräte GmbH Domestic-appliance heating device

Also Published As

Publication number Publication date
ES2531904B1 (es) 2016-01-04
ES2531904A1 (es) 2015-03-20
EP2852249A1 (fr) 2015-03-25
ES2626778T3 (es) 2017-07-26

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