EP2876974B1 - Dispositif d'appareil de cuisson - Google Patents

Dispositif d'appareil de cuisson Download PDF

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Publication number
EP2876974B1
EP2876974B1 EP14192601.4A EP14192601A EP2876974B1 EP 2876974 B1 EP2876974 B1 EP 2876974B1 EP 14192601 A EP14192601 A EP 14192601A EP 2876974 B1 EP2876974 B1 EP 2876974B1
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EP
European Patent Office
Prior art keywords
time interval
switch
time
cooking device
switching
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.)
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EP14192601.4A
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German (de)
English (en)
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EP2876974A1 (fr
Inventor
Daniel Anton Falcon
Jose Maria De La Cuerda Ortin
Oscar Garcia-Izquierdo Gango
Paul Muresan
Antonio Muñoz Fumanal
Diego Puyal Puente
Jose Alfonso Santolaria Lorenzo
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BSH Hausgeraete GmbH
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BSH Hausgeraete GmbH
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Publication of EP2876974A1 publication Critical patent/EP2876974A1/fr
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/06—Control, e.g. of temperature, of power
    • H05B6/062—Control, e.g. of temperature, of power for cooking plates or the like

Definitions

  • the invention is based on a cooking device device according to the preamble of claim 1.
  • the cooking appliance has a control device, which controls the inverter in the operating process such that the inverter interrupts the conduction path during a whole time interval. Further, in the operation, the control device causes the conduction path to be established immediately before and immediately after the time interval. Furthermore, the control device causes switching of the switch, which starts and ends during the time interval and which brings the switch in a specific switching position. The switch remains in the switching position during a cooking operation, with current flowing through the switch during the cooking process and the current for inductive heating of a cookware.
  • Such a cooking appliance is eg off WO 2011/135470 A1 known.
  • the documents WO 2011/055279 A1 and WO 2012/001603 A1 further disclose cooking appliances of the prior art.
  • a cooking appliance with an inverter and with two heating elements is known, which are alternately supplied with power in a single operation of a single inverter.
  • a switching position of an SPDT relay determines which of the two heating elements will be supplied with power.
  • At the inverter is a rectified AC voltage. During a switching of the relay, the rectified AC voltage has a minimum.
  • the object of the invention is in particular to provide a generic device with improved properties in terms of high flexibility and / or efficiency.
  • the object is achieved by the features of claim 1, while advantageous embodiments and modifications of the invention can be taken from the dependent claims.
  • the invention relates to a cooking device device, in particular a hob device, with at least one switching unit, by means of at least one conduction path can be interrupted and produced, flows through at least one operating operation generated by a power line voltage current and leading to a first switch, and with at least one control device which interrupts the conduction path by means of the switching unit, the conduction path during at least a first entire time interval, and which, in the operation, causes the conduction path to be established immediately before and immediately after the first time interval, wherein switching of the first switch starts and ends during the first time interval.
  • the first time interval corresponds to at least half a period of the mains voltage.
  • a “switching unit” is to be understood in particular as a structural unit which is intended to produce and interrupt an electrically conductive connection, the structural unit preferably having a transistor for this purpose.
  • the switching unit has at least one and advantageously at least two inverters.
  • the switching unit has at least one insulated gate bipolar transistor.
  • an efficient power control can be achieved.
  • intended is meant in particular specially equipped and / or specially designed and / or specially programmed.
  • the fact that an object is intended for a specific function should in particular mean that the object fulfills and / or executes this specific function in at least one application and / or operating state.
  • a “conduction path” is to be understood in particular as an electrically conductive connection between at least two points.
  • a current supply should be understood as a conduction path.
  • a “power supply voltage” is to be understood in particular as an electrical voltage provided by a power supply network, in particular a periodic alternating voltage, wherein an effective value of the voltage is preferably 230 V and preferably a frequency of the periodic voltage between 48 Hz and 62 Hz and particularly advantageous 50 Hz or 60 Hz.
  • a "current generated by means of a mains voltage” is to be understood in particular as a current caused by the action of the mains voltage, the current preferably being a rectified single-phase alternating current, and more preferably a frequency between 96 Hz and 124 Hz, preferably of 100 Hz or 120 Hz, having.
  • the switching unit interrupts the conduction path during an entire time interval should be understood in particular in that the switching unit causes the conduction path to be impermeable to electric current during the entire time interval.
  • a “switching" of the switch is intended in particular to be understood as meaning a release of an electrically conductive connection, which the switch has in at least one operating state, and / or a production of the electrically conductive connection.
  • the switching "begins and ends during the time interval" in the event that the switching consists of a release of the electrically conductive connection, it should be understood in particular that the conductive connection of the switch initially exists during the time interval and a state of Switch so changed during the time interval that the conductive connection is completely interrupted at least one time of the time interval.
  • the switching starts and ends during the time interval
  • the conductive connection of the switch is initially completely interrupted during the time interval
  • State of the switch is changed during the time interval such that the conductive connection is complete at least one time of the time interval, in particular in the case in which two contacts of the switch collide in establishing the conductive connection, the collision before an end of the time interval is completely completed.
  • FIGS the first conductive connection of the switch during the time interval initially exists and a state of the switch during the time interval changed such that the first conductive connection is completely interrupted at least one time of the time interval and that the second conductive connection of the switch during the time interval is initially completely interrupted and a state of the switch is changed during the time interval such that the second conductive connection is complete at least at one time of the time interval.
  • a possible collision of two contacts of the switch should be completely completed before one end of the time interval.
  • a high degree of flexibility and / or efficiency can be achieved.
  • a cost-effective design can be achieved together with a high heating efficiency.
  • a cost-effective design of the switch and a long life of the switch combined with a single operation of a power supply of two different heating elements, which each contribute to different cooking processes can be achieved by a single inverter.
  • the switch is switched gently in the operation by no current flows through the compounds at a breaking of a first electrically conductive connection and when establishing a second electrically conductive connection through the switch.
  • deviations of a reaction time of the switch from a control to a start of a switching operation can be compensated by a desired reaction time. Accordingly, possible fluctuations in the switching times, in particular due to temperature fluctuations and / or aging phenomena of the switches and / or by different manufacturers, can be taken into account.
  • the first time interval corresponds to at most a whole period of the power grid voltage.
  • the first time interval corresponds to at most 20 ms.
  • the first time interval corresponds to at most 16.33 ms. This can reduce flicker.
  • control device is provided to select the first time interval such that a time-dependent voltage of a voltage supply unit has a minimum point at least substantially in a middle of the first time interval.
  • a “middle” of the first time interval is to be understood in particular as meaning a time which has the same time interval from one end to the beginning of the time interval.
  • a “minimum point” of the voltage should in particular be understood as a point in time at which the voltage has a minimum.
  • a “minimum” of the time-dependent voltage is understood in particular to be a voltage value of the voltage at a specific time, which lies within a time interval in which the voltage only assumes values which are greater than or equal to the voltage value, the time being from a start point and an end point of the latter time interval.
  • the voltage "at least essentially” has a minimum point in the middle of the first time interval, it should be understood in particular that the minimum point is at most 25%, preferably at most 10% and particularly preferably at most 2% of a total duration of the time interval is spaced from the center.
  • the minimum point is at most 25%, preferably at most 10% and particularly preferably at most 2% of a total duration of the time interval is spaced from the center.
  • the control device is provided to select the first time interval such that a time-dependent voltage of a voltage supply unit has a maximum point at least substantially in a middle of the first time interval.
  • a “maximum point” of the voltage should in particular be understood as a point in time at which the voltage has a maximum.
  • a “maximum” of the time-dependent voltage is understood in particular to be a voltage value of the voltage at a specific time, which lies within a time interval in which the voltage only assumes values which are less than or equal to the voltage value, the time being from a start point and an end point of the latter time interval.
  • the voltage "at least essentially" has a maximum point in the middle of the first time interval, it should be understood in particular that the maximum point is at most 25%, preferably at most 10% and more preferably at most 2% of a total duration of the time interval spaced from the center is.
  • the maximum point is at most 25%, preferably at most 10% and more preferably at most 2% of a total duration of the time interval spaced from the center is.
  • control device causes the switching unit to interrupt the conduction path periodically in each case for at least a total period of time, which is at least substantially the same length as the first time interval, during the operating process.
  • a time span which is "at least essentially" the same as the first time interval should be understood to mean in particular a time span whose length is at most 20%, preferably at most 10% and particularly preferably at most 5% of a length of the first time interval differs.
  • a period of the periodic starting is less than 2 s, in particular less than 1 s, and preferably less than 0.5 s.
  • the cooking device device has at least one second switch which is connected in series with the first switch, wherein the control device is provided to switch the second switch in a second time interval and during the entire second time interval to the conduction path by means of the switching unit interrupt so that immediately before and immediately after the second time interval, current flows through the conduction path.
  • the control device switches the second switch "in a second time interval”
  • the control device causes a switching of the second switch, which starts and ends during the second time interval. This allows a long life of the second switch can be achieved.
  • control device switch the switching unit in a first time period, which immediately precedes the first time interval, with a first set of switching parameters, and the control device switches the switching unit in a second time interval, which immediately follows the first time interval, with a second set switched by switching parameters.
  • the second set of switching parameters may be different from the first set of switching parameters.
  • a Switching frequency of the switching unit is different in the two time periods or, if the switching frequencies are equal, the switching unit in a period in the first period at a certain fraction of the period switches and the switching unit in a period in the second period at the time Fraction of the period is inactive.
  • This allows a high degree of flexibility can be achieved.
  • it can be achieved that a power delivered to different heating elements in succession is at least substantially equal, as a result of which, in particular, the power supply is uniformly loaded.
  • the first switch is a relay, whereby a cost-effective design can be achieved.
  • a cooking appliance in particular a hob, proposed with a Garausvorsch invention, whereby a high efficiency can be achieved.
  • a cooking appliance control method is proposed in which a switching unit interrupts and produces at least one conduction path to a first switch through which a power generated by a power supply voltage temporarily flows, and a control device controls the switching unit such that the switching unit controls the conduction path during at least a first one interrupts the entire time interval, and that immediately before and immediately after the first time interval, the conduction path is established, wherein a switching of the first switch starts and ends during the time interval, wherein the first time interval corresponds to at least half a period of the power grid voltage.
  • FIG. 1 shows a plan view of a cooking appliance with a cooking appliance according to the invention designed as a cooking appliance device, which has a plurality of cooking zones 34.
  • FIGS. 2a and 2b show a circuit of the cooking appliance device in a first and a second switching state.
  • a circuit 36 of the cooking appliance device has four heating elements L 1 , L 2 , L 3 , L 4 designed as coils, all of which can be operated simultaneously at different power levels.
  • Each of the heating elements L 1 , L 2 , L 3 , L 4 is associated with one of the cooking zones 34, so that when using the cooktop each heating element L 1 exactly one cookware element, ie z. As a pot or pan, heated.
  • the circuit 36 has a switching unit 10, which is formed by a first and a second inverter 28, 30.
  • the first inverter 28 includes a first insulated gate bipolar transistor (hereinafter, the abbreviation "IGBT" is used) 32 and a second IGBT 33.
  • the inverter 30 has a first IGBT 44 and a second IGBT 46.
  • the circuit 36 has a country-specific AC voltage source U, which supplies a mains voltage with an effective value of 230 V and a frequency of 50 Hz.
  • the described Garellavorraum is intended in particular for operation in Germany.
  • a corresponding AC voltage source supplies a 60 Hz power supply voltage.
  • the voltage of the AC voltage source U first passes through a filter 40 of the circuit 36 which eliminates high frequency noise.
  • the filter 40 is at least substantially a low-pass filter.
  • a voltage filtered by the filter 40 is supplied by a rectifier 42 to the circuit 36, which can be designed as a bridge rectifier, rectified. As a result, at a output of the rectifier 42, a rectified voltage U g ( FIG.
  • the circuit 36 has two capacitors C 1 , C 2 .
  • a first contact of the capacitors C 1 , C 2 is conductively connected to the collector of the IGBT 32 and conductively connected to a collector of the IGBT 44.
  • a second contact of the capacitors C 1 , C 2 is conductively connected to the emitter of the IGBT 33 and conductively connected to the emitter of the IGBT 46.
  • An emitter of the IGBT 32 is conductively connected to a collector of the IGBT 33.
  • an emitter of the IGBT 44 is conductively connected to a collector of the IGBT 46.
  • the circuit has a 'formed as a relay S 1 switch S 1 and five other relay S 2, S 3, S 4, S 5, S 6 on 36th
  • the relays S 1 ', S 2 , S 3 , S 4 , S 5 , S 6 are SPDT relay and identical.
  • Each of the relays S 1 ', S 2 , S 3 , S 4 , S 5 , S 6 has a first, a second and a third contact and a coil.
  • the first contact is conductively connectable by a corresponding control of the coil optionally with the second or the third contact.
  • the first contact of the relay S 3 is conductively connected to the emitter of the IGBT 32. Further, the second contact of the relay S 3 is connected to the first contact of the relay S 1 '.
  • the third contact of the relay S 3 is conductively connected to the first contact of the relay S 2 .
  • the second contact of the relay S 1 ' is conductively connected to a first contact of the heating element L 1 .
  • the third contact of the relay S 1 ' is conductively connected to a first contact of the heating element L 2 .
  • the second contact of the relay S 2 is conductively connected to a first contact of the heating element L 3 .
  • the third contact of the relay S 2 is conductively connected to a first contact of the heating element L 4 .
  • the first contact of the relay S 6 is conductively connected to the emitter of the IGBT 44. Further, the second contact of the relay S 6 is connected to the first contact of the relay S 4 .
  • the third contact of the relay S 6 is conductively connected to the first contact of the relay S 5 .
  • the second contact of the relay S 4 is conductively connected to a first contact of the heating element L 1 .
  • the third contact of the relay S 4 is conductively connected to a first contact of the heating element L 2 .
  • the second contact of the relay S 5 is conductive with a first contact of the heating element L 3 connected.
  • the third contact of the relay S 5 is conductively connected to a first contact of the heating element L 4 .
  • a second contact of the heating element L 1 is conductively connected to a second contact of the heating element L 2 . Further, a second contact of the heating element L 3 is conductively connected to a second contact of the heating element L 4 .
  • the circuit 36 also has capacitors C 3 , C 4 , C 5 , C 6 .
  • the second contact of the heating element L 1 is conductively connected to a first contact of the capacitor C 3 and to a first contact of the capacitor C 4 .
  • the second contact of the heating element L 3 is conductive to a first contact of the capacitor C5 and connected to a first contact of the capacitor C. 6
  • Second contacts of the capacitors C 3 and C 5 are conductively connected to the collector of the IGBT 32. Further, second contacts of the capacitors C 4 and C 6 are conductively connected to the emitter of the IGBT 46.
  • Both by means of the IGBT 32 and by means of the IGBT 33 is in each case a conduction path to the first switch S 1 , through which in an operating process, a generated by means of the AC voltage source U current flows, produced and interruptible.
  • a control device 14 of the circuit 36 which has two control units 56, 58, controls the switching unit 10 during the operating process, such that during a total time interval t (FIG. FIG. 3 ) for each one of the IGBTs 32, 33, 44, 46 is that a conductive connection between its collector and its emitter is interrupted.
  • the control device 14 is connected to the switching unit 10 and in particular to the gate terminals of the IGBTs 32, 33, 44, 46 (not shown).
  • the control device 14 is connected to the switching unit 10 and in particular to the gate terminals of the IGBTs 32, 33, 44, 46 (not shown).
  • the control device 14 is connected to the switching unit 10 and in particular to the gate terminals of the IGBTs 32, 33, 44, 46 (not shown).
  • Immediately before and immediately after the time interval t at least one of the IGBTs 32, 33 and at least one of the IGBTs 44, 46 is in a state in which its collector is conductively connected to its emitter.
  • control device 14 causes, during the entire time interval t only for each of the IGBTs 32, 33, that a conductive connection between its collector and its emitter is interrupted, while the IGBTs 44, 46, for example, in the time interval t can perform switching operations.
  • the relays S 2 , S 3 , S 4 , S 5 and S 6 in the operating process in the following switching states:
  • the relay S 2 , S 3 , S 4 , S 5 is in each case the first contact with the second Contact connected.
  • the relay S 6 the first to the third contact is conductively connected ( FIG. 2a ).
  • FIG. 3 schematically a Bewerk Trent a switching operation of the relay S 1 'is illustrated, wherein on an abscissa 52, the time is shown.
  • a switching position 54 of the relay S 1 ' that is, a position of the first contact of the relay S 1 ' is shown in dashed lines.
  • the first relay S 1 ' in a first switching state, in which the first contact of the relay S 1 ' with the second contact of the relay S 1 'forms a conductive connection.
  • the conductive connection is free of current flow.
  • the control device 14 causes, during a period t 2 , starting from the first switching state ( FIG. 2a ) solves the conductive connection, the first contact of the relay S 1 'finally separated from the second contact of the relay S 1 ' and subsequently impinges on the third contact. After impact, the first and third contacts of the relay S 1 'form a conductive connection.
  • This conductive connection exists before an end of the time interval t ( FIG. 2b ) and is free of current flow during the time interval t.
  • the time interval t 2 lies completely within the time interval t.
  • the time interval t 2 is at least substantially between 2 ms and 10 ms. Furthermore, the time period t 2 is spaced from end points of the time interval t.
  • a time interval t 1 has a voltage U s at the coil of relay S 1 '. This causes a switching of the relay S 1 'in the time t 2 .
  • the time which has a time interval t 1 from a middle of the time period t 2 , characterizes a reaction time of the relay S 1 '.
  • the time interval t 1 is at least substantially between 2 ms and 15 ms.
  • the distance t 1 may differ by a maximum deviation time.
  • a total duration of the time interval t is the sum of the time period t 2 and twice the amount of the deviation time. Because the conductive connections of the relay S 1 'during the time interval t are de-energized, the switching operation of the relay S 1 ', during the time interval t takes place, particularly gentle for the relay S 1 'and allows a long life of the relay S 1 '. In principle, it is conceivable that during the time interval t apart from the relay S 1 'another of the relay S 2, S 3, S 4, S 5, S 6 performs a switching operation, which begins during the time interval t and ends.
  • the mains voltage has a frequency of 50 Hz.
  • the time interval t corresponds to at least half the period of the mains voltage and has a length of 12 ms.
  • the AC voltage source U, the filter 40 and the rectifier 42 form a voltage supply unit 18, which applies the voltage U g to the switching unit 10 during the operating process.
  • the voltage U g has a minimum point in a middle of the time interval t. Furthermore, a voltage delivered by the AC voltage source U has a zero crossing in the middle of the time interval t.
  • the capacitors C 1 and C 2 and the inactivity of the inverters 28, 30 ensure that the voltage U g does not decrease.
  • the voltage U g rises again to its maximum value, since a further maximum of the voltage U g lies within the time interval t.
  • the lowest curve shows an envelope of a current that flows through the heating element L 1 before the time interval t and flows through the heating element L 2 after the time interval t. During the time interval t, no current flows through the heating elements L 1 and L 2 .
  • FIG. 4 shows a representation of a period T Mux .
  • the control device 14 causes the switching unit 10 during the operation to periodically for periods of time t 3 , to interrupt all power supply lines which can be produced and interrupted by means of the switching unit 10.
  • the time periods t 3 are as long as the time interval t.
  • a period T Mux of the periodic interruption is less than one second.
  • the period T Mux begins with one of the time periods t 3 , which is followed immediately by a first time period T S1 .
  • the controller 14 causes each of the IGBTs 32, 33 to switch at a first frequency during the time period T S1 .
  • T S1 is one of the periods t 3 closes on.
  • the time interval t is followed immediately by a time interval T S2 .
  • the control device 14 causes each of the IGBTs 32, 33 to switch at a second frequency, which differs in particular from the first frequency, during the time period T S2 .
  • a power is delivered to the heating element L 1 by means of the first inverter 28 (FIG. FIG. 2a ).
  • the power which is output to the heating element L 1 during the time period T S1 corresponds approximately to the power which, during the second time period T S2, is applied to the heating element L 2 by means of the inverter 30 (FIG. FIG. 2b ) is delivered.
  • the inverter 30 (FIG. FIG. 2b ) is delivered.
  • Lengths of the time segments T S2 , T S2 are set by the control device 14 in accordance with the power levels at which each individual heating element L 1 , L 2 is to be operated.
  • the power levels of the heating elements L 1 , L 2 may differ and the heating elements L 1 , L 2 heat different cookware elements.
  • the inverter 30 supplies the heating element L 3 with power during the periods T S1 , T S2 .
  • the voltage U g is in areas that are free of all time intervals t 3 , periodically with a period that is at least half as large as the period of the power grid voltage.
  • the first time interval (t) corresponds at most to a whole period of the power supply voltage.
  • the relay S 3 is a switch S 3 ', which is connected in series with the switch S 1 .
  • the control device 14 switches the relay S 3 at a further operation which differs from the operating procedure in a second time interval which is 11 ms long. The switching of the relay S 3 starts and ends in the second time interval.
  • the control device 14 causes each of the IGBTs 32, 33, 44, 46 to be in a blocking state during the entire second time interval, that is to say free from a conductive connection between its collector and its emitter.
  • at least one of the IGBTs 32, 33 and at least one of the IGBTs 44, 46 switches.
  • all the IGBTs 32, 33, 44, 46 are periodically switched by the control device 14.
  • FIG. 5 shows possible arrangements of the time interval t.
  • the voltage U g has a minimum point in the middle of the time interval t. Furthermore, that of the AC voltage source U delivered voltage in the middle of the time interval t to a zero crossing.
  • the voltage U g has a maximum point in the middle of the time interval t. Furthermore, the voltage delivered by the AC voltage source U has an extreme in the middle of the time interval t, in particular a maximum and / or minimum.
  • the middle figure of the FIG. 5 shows an incident. In this case, the voltage U g has neither a maximum point nor a minimum point in the middle of the time interval t. The maximum location and / or the minimum location are shifted with respect to the middle of the time interval. Furthermore, the voltage delivered by the AC voltage source U in the middle of the time interval t also has neither a maximum nor a minimum. Due to the different arrangement of the time interval t, a possible flicker can be largely avoided.
  • the circuit 36 has further relays and further heating elements, which are connected by means of the further relay to the inverters 28, 30.
  • the relays S 1 ', S 2 , S 3 , S 4 , S 5 , S 6 which are designed as SPDT relays, are each replaced by two SPST relays.
  • switching unit C 6 capacitor 14 control device S 1 switch 18 Power supply unit S 1 ' relay 28 inverter S 2 relay 30 inverter S 3 relay 32 Bipolar transistor with insulated gate electrode S 3 ' switch S 4 relay 33 IGBT S 5 relay 34 cooking zone S 6 relay 36 circuit L 1 heating element 40 filter L 2 heating element 42 rectifier L 3 heating element 44 IGBT L 4 heating element 46 IGBT t time interval 52 abscissa t 1 distance 54 switch position t 2 Period of time 56 control unit t 3 Period of time 58 control unit T S1 period U AC voltage source T S2 period T Mux period U g tension U S tension C 1 capacitor C 2 capacitor C 3 capacitor C 4 capacitor C 5 capacitor

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  • Electromagnetism (AREA)
  • Induction Heating Cooking Devices (AREA)

Claims (11)

  1. Dispositif d'appareil de cuisson comprenant au moins une unité de commutation (10) au moyen de laquelle au moins un trajet conducteur peut être interrompu et être établi, à travers lequel, lors d'au moins une opération de fonctionnement, traverse un courant généré au moyen d'une tension de réseau électrique, et lequel conduit vers un premier commutateur (S1), et comprenant au moins un dispositif de commande (14), lequel, lors de l'opération de fonctionnement, interrompt le trajet conducteur pendant au moins un premier intervalle de temps (t) total au moyen de l'unité de commutation (10), et lequel, lors de l'opération de fonctionnement, incite que directement avant et directement après le premier intervalle de temps (t), le trajet conducteur soit établi, une commutation du premier commutateur (S1) débutant et s'achevant pendant le premier intervalle de temps (t), caractérisé en ce que le premier intervalle de temps (t) correspond au moins à une demi-durée d'une période de la tension de réseau électrique.
  2. Dispositif d'appareil de cuisson selon la revendication 1, caractérisé en ce que le premier intervalle de temps (t) correspond au moins essentiellement au maximum à une durée complète d'une période de la tension de réseau électrique.
  3. Dispositif d'appareil de cuisson selon la revendication 1 ou 2, caractérisé en ce que le dispositif de commande (14) est ménagé pour sélectionner le premier intervalle de temps (t) de manière à ce qu'une tension, dépendant du temps, d'une unité d'alimentation en tension (18) présente un point minimal au moins essentiellement dans un milieu du premier intervalle de temps (t).
  4. Dispositif d'appareil de cuisson selon au moins la revendication 1 ou 2, caractérisé en ce que le dispositif de commande (14) est ménagé pour sélectionner le premier intervalle de temps (t) de manière à ce qu'une tension, dépendant du temps, d'une unité d'alimentation en tension (18) présente un point maximal au moins essentiellement dans un milieu du premier intervalle de temps (t).
  5. Dispositif d'appareil de cuisson selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de commande (14), lors de l'opération de fonctionnement, incite l'unité de commutation (10) à interrompre le trajet conducteur périodiquement respectivement pour au moins une période de temps complète (t3), laquelle est au moins essentiellement aussi longue que le premier intervalle de temps (t).
  6. Dispositif d'appareil de cuisson selon la revendication 5, caractérisé en ce qu'une durée de période (TMux) de l'incitation périodique est inférieure à 2.
  7. Dispositif d'appareil de cuisson selon l'une quelconque des revendications précédentes, caractérisé par au moins un deuxième commutateur (S3'), lequel est connecté en série par rapport au premier commutateur (S1), le dispositif de commande (14) étant ménagé pour commuter le deuxième commutateur (S3') pendant un deuxième intervalle de temps et pour interrompre le trajet conducteur au moyen de l'unité de commutation (10) pendant la totalité du deuxième intervalle de temps, de sorte que directement avant et directement après le deuxième intervalle de temps du courant circule à travers le trajet conducteur.
  8. Dispositif d'appareil de cuisson selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de commande (14) commute l'unité de commutation (10) pendant une première période de temps (TS1), laquelle précède directement le premier intervalle de temps (t), à l'aide d'un premier jeu de paramètres de commutation et en ce que le dispositif de commande (14) commute l'unité de commutation (10) pendant une deuxième période de temps (TS2), laquelle succède directement au premier intervalle de temps (t), à l'aide d'un deuxième jeu de paramètres de commutation.
  9. Dispositif d'appareil de cuisson selon l'une quelconque des revendications précédentes, caractérisé en ce que le premier commutateur (S1) est un relais (S1').
  10. Appareil de cuisson, notamment table de cuisson, comprenant un dispositif d'appareil de cuisson selon l'une quelconque des revendications précédentes.
  11. Procédé de commande d'appareil de cuisson, notamment pour la commande d'un dispositif d'appareil de cuisson selon l'une quelconque des revendications 1 à 9, dans lequel une unité de commutation (10) interrompt et établit un trajet conducteur vers un premier commutateur (S1) à travers lequel un courant généré au moyen d'une tension de réseau électrique circule temporairement, et dans lequel un dispositif de commande (14) commande l'unité de commutation (10) de manière à ce que l'unité de commutation (10) interrompe le trajet conducteur pendant au moins un premier intervalle de temps (t) total et que directement avant et directement après le premier intervalle de temps (t), le trajet conducteur soit établi, une commutation du premier commutateur (S1) débutant et s'achevant pendant le premier intervalle de temps (t), caractérisé en ce que le premier intervalle de temps (t) correspond au moins à une demi-durée d'une période de la tension de réseau électrique.
EP14192601.4A 2013-11-21 2014-11-11 Dispositif d'appareil de cuisson Active EP2876974B1 (fr)

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Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3610196A1 (de) * 1986-03-26 1987-10-01 Thomson Brandt Gmbh Kochstelle mit induktiv geheizten kochplatten
ES2378938B1 (es) * 2009-11-03 2013-03-14 BSH Electrodomésticos España S.A. Campo de cocción con al menos un sensor de temperatura.
ES2385091B1 (es) * 2010-04-27 2013-05-28 Bsh Electrodomésticos España, S.A. Dispositivo de encimera de cocción.
ES2386456B1 (es) * 2010-06-28 2013-07-19 BSH Electrodomésticos España S.A. Dispositivo de encimera de coccion
EP2506673B1 (fr) * 2011-03-31 2016-02-03 BSH Hausgeräte GmbH Plaque de cuisson a induction

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
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