EP3768045B1 - Mikrowellenofen - Google Patents

Mikrowellenofen Download PDF

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Publication number
EP3768045B1
EP3768045B1 EP19186445.3A EP19186445A EP3768045B1 EP 3768045 B1 EP3768045 B1 EP 3768045B1 EP 19186445 A EP19186445 A EP 19186445A EP 3768045 B1 EP3768045 B1 EP 3768045B1
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EP
European Patent Office
Prior art keywords
wireless communication
duty cycle
microwave oven
microwave
entity
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EP19186445.3A
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English (en)
French (fr)
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EP3768045A1 (de
Inventor
Kurt Reul
Arnd Hofmann
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Electrolux Appliances AB
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Electrolux Appliances AB
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Publication of EP3768045A1 publication Critical patent/EP3768045A1/de
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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
    • H05B6/64—Heating using microwaves
    • H05B6/66—Circuits
    • H05B6/668—Microwave heating devices connected to a telecommunication network

Definitions

  • the present invention relates generally to the field of microwave ovens. More specifically, the present invention relates to a microwave oven which is controlled to make use of an interruption of or to actively pause the generation of microwaves in order to transmit/receive information via a wireless communication interface.
  • Microwave ovens are well-known in prior art. Microwaves used in microwave ovens to heat food often have a frequency of 2.4 to 2.5 GHz. The electromagnetic waves produce oscillating magnetic and electric fields that excite water molecules in food, therefore generating heat.
  • Short-range wireless communication is also performed in the frequency band of 2.4 GHz to 2.5 GHz.
  • microwaves transmitted by the microwave generator of the microwave oven interfere with wireless communication signals provided by a wireless communication entity of the microwave oven which enables a wireless communication link of the microwave oven with a router or another wireless communication device.
  • US 2013008893 A1 discloses a microwave oven being provided with energy management means.
  • the energy management means are configured to process a signal indicative of the current state of an associated energy supplying utility and to determine on whether to operate the microwave oven in one of a normal operating mode and an energy saving mode.
  • a controller of the microwave oven is configured to receive and process a signal indicative of a utility state. As the receipt of the signal may be disturbed due to the operation of the magnetron of the microwave oven the signal may be send while the magnetron is deactivated.
  • the invention refers to a microwave oven.
  • the microwave oven comprises at least one microwave generator and a control unit or control entity for controlling said microwave generator.
  • Said control unit or control entity is configured to control the microwave generator according to a duty cycle in which the microwave generator is activated in a first time period of the duty cycle and deactivated in a second time period of the duty cycle.
  • the microwave oven further comprises a wireless communication unit or communication entity, said wireless communication unit or communication entity being controlled by said control unit or control entity in order to perform wireless communication in the second time period of the duty cycle.
  • the second time period of the duty cycle may cover 10% to 90% of the duration of the duty cycle.
  • an internal control entity of the microwave may control the provision of microwaves according to a periodic duty cycle with predetermined relation of time periods in which the microwave generator is activated, respectively, deactivated. Additionally or alternatively, the control unit may advantageously make use of a programmed interruption of the operation of the microwave generator during the periodic duty cycle. In phases in which the microwave generation is disabled (also referred to as pauses or microwave pauses) an interference-free transmission/receipt of information based on the wireless communication entity is possible.
  • the duty cycle is adapted to the time needed for a complete information exchange for each communication process by way of wireless communication. In that way, the communication can be finalized during only one interruption of the operation of the microwave generator, i. e. during only one cycle period or second time period, respectively.
  • the control unit may be configured to control the power level of the microwave oven based on the ratio between the first time period and the sum of first and second time periods. So, the mean power or effective value of the power provided by the microwave generator is varied by the ratio of time periods in which the microwave generator is activated/deactivated. Preferably, the sum of first and second time periods which is the duration of the repetitive duty cycle is kept constant during wireless communication. Thereby an advantageous power control paired with interference-free wireless transmission/receipt is possible.
  • the second time period comprises a duration greater than zero. So, even at maximum power level requested by the user or by a selected cooking program, the microwave generator is periodically switched on/off in order to enable interference-free wireless transmission/receipt of information or at least to trigger or to request wireless communication particularly by an external communication device.
  • the duration of one duty cycle is in the range of 20sec to 60sec, preferably in the range of 30sec to 50sec, specifically 40sec or essentially 40sec.
  • the duration may be dependent on the power requested by the user or a selected cooking program.
  • a fixed cycle rate which may be specified by the control unit as a constant value, the control of the microwave oven is simplified.
  • a minimum duration of the second time period may be defined by the transfer size of a communication package. This is a preferred solution for the option to finalize the wireless communication during one cycle period. This may also go hand in hand with a maximum of an average power level providable by the duty cycle being dependent on the minimum duration of the second time period.
  • a preferred embodiment provides a microwave oven which is selectively operatable at a normal cooking mode and at a wireless communication mode, the latter one being a mode in which not only food preparation with microwaves but also wireless communication is enabled.
  • the microwave oven In the normal cooking mode the microwave oven is operatable at most permanently, i. e. without any interruption, at a nominal power of the microwave generator.
  • the microwave oven In the wireless communication mode, however, the microwave oven is operatable at most at a fraction of the nominal power of the microwave generator. Said fraction is defined by the ratio between the first time period and the summation of the first and second time periods, i.e. the duration of a duty cycle period. This may result in a pause which is created, thereby pulsing the microwave generator even if the user or a selected cooking program would require 100% power level, i. e. full power level.
  • the microwave oven may comprise at least one cooking program and during a cooking program or a cooking program sequence using the wireless communication mode at least one cooking parameter may be modified or modifiable compared with the respective cooking parameter of a cooking program or cooking program sequence with the normal cooking mode. Since during a cooking or food preparation or treatment program, in particular during a program which comprises program sequences with full power level, the cooking or food treatment is delayed or retarded, the finishing of the food may not be completed in case of reduced power delivery, i. e. average power delivery, due to the pauses needed for data or information transfer. In order to compensate this reduced average power level, the at least one cooking parameter may be modified. As an example, the cooking or food preparation or treatment program may be prolongated.
  • the cooking profile may be modified, particularly cooking program sequences with a reduced power level (e. g. reduced to 40% of full power level) in normal cooking programs (hence without wireless communication) may be less reduced (e. g. reduced to 60%) if wireless communication takes place.
  • a reduced power level e. g. reduced to 40% of full power level
  • the cooking profile may be modified, particularly cooking program sequences with a reduced power level (e. g. reduced to 40% of full power level) in normal cooking programs (hence without wireless communication) may be less reduced (e. g. reduced to 60%) if wireless communication takes place.
  • Another specific embodiment is characterized by a microwave generator which is operatable at an overboost operational mode, at least for a limited period of time and/or at least during the wireless communication mode. This may be an alternative or additional measure for compensating the afore-mentioned consequence of a reduced average power level when wireless communication modifies a cooking program which otherwise would comprise only program sequences operated at normal cooking mode.
  • the duty cycle in particular the duty cycle time, may be adaptable to the frequency of wireless communication. That may cover the situation that in case of a reduction of a delay in information exchange is required, the duty cycle time is shortened, so that the control unit will quicker receive data or information by way of wireless communication. On the other hand, also the situation of a prolonged duty cycle time may be covered, in particular when there is no urgency or hurry in performing wireless communication.
  • the microwave generator comprises a magnetron. Therefore a reliable microwave generation at low costs is possible.
  • the microwave generator comprises one or more solid state microwave generators.
  • solid state microwave generators which mainly comprise semiconductor components for generating and amplifying microwaves it is possible to reduce the duration of duty cycle which leads to reduced waiting times until information can be transmitted/received.
  • control unit is directly coupled with the wireless communication unit via a control line or a bus or an electronic circuit. Thereby the control unit can directly send control information to the wireless communication unit in order to control said wireless communication unit according to the duty cycle.
  • control unit is coupled with the wireless communication unit by a control line or a bus via a user interface or an electronic circuit.
  • all information related to the microwave generator is available inside of the appliance and there is no need for the WIFI system to check any occurrence of "noise" caused by said microwave generator.
  • the microwave generator may be coupled with the control unit or control entity by at least one control line and/or via a power interface.
  • Said power interface is particularly allocated to or associated with a power board of the microwave oven. That way, a direct and unaltered control signal from the control unit or control entity to the microwave generator as well as a respective feedback signal in reversed direction is provided.
  • the invention relates to a method for operating a microwave oven.
  • the microwave oven comprises at least one microwave generator and a control unit or control entity for controlling said microwave generator.
  • the method comprises the steps of:
  • the duty cycle is adapted to the time needed for a complete information exchange for each communication process by way of wireless communication.
  • the duration of one duty cycle may be in the range of 20sec to 60sec, preferably in the range of 30sec to 50sec, specifically 40sec or essentially 40sec.
  • the power level of the microwave oven is controlled based on the ratio between the first time period and the sum of first and second time periods. So, the mean power or effective value of the power provided by the microwave generator is varied by the ratio of time periods in which the microwave generator is activated, respectively, deactivated. Preferably, the sum of first and second time periods which is the duration of the repetitive duty cycle is kept constant during wireless communication. Thereby an advantageous power control paired with interference-free wireless transmission/receipt is possible.
  • the microwave generator is periodically switched on/off in order to enable interference-free wireless transmission/receipt of information or at least to trigger or to request wireless communication particularly by an external communication device.
  • a preferred embodiment provides a microwave oven which is selectively operatable at a normal cooking mode and at a wireless communication mode, the latter one being a mode in which not only food preparation with microwaves but also wireless communication is enabled.
  • the microwave oven In the normal cooking mode the microwave oven is operated at most permanently, i. e. without any interruption, at a nominal power of the microwave generator.
  • the microwave oven In the wireless communication mode, however, the microwave oven is operated at most at a fraction of the nominal power of the microwave generator. Said fraction is defined by the ratio between the first time period and the summation of the first and second time periods, i.e. the duration of a duty cycle period. This may result in a pause which is created, thereby pulsing the microwave generator even if the user or a selected cooking program would require 100% power level, i. e. full power level.
  • the control unit switches from the normal cooking mode to the wireless cooking mode for starting the wireless communication.
  • the control unit may start the wireless communication by itself, usually when intending to provide specific information to a user, e. g. to a user's computer device.
  • the switch to the wireless communication mode may also be triggered by such external computer device and, in that case, sending a demand to the control unit requesting from the control unit to enable the wireless communication by providing the necessary pause of microwave generation.
  • the microwave oven returns to the normal cooking mode after finalization of the wireless communication.
  • the control unit may organize this return when recognizing the end of said communication.
  • control information regarding enabling the wireless communication unit is directly transmitted from the control unit to the wireless communication unit or via a user interface.
  • the transmission may be performed via a control bus which is also used for other data transmission or may be performed by a dedicated control line.
  • the second time period may be influenced by the requested power level.
  • the lower limit of the second time period may be chosen such that transmission / receipt of information can be performed via the wireless communication unit without causing an information jam over multiple duty cycles.
  • the wireless communication unit is recalling or downloading data information from an external data source during the second time period.
  • an external data source may be a smartphone or a computer, preferably a tablet computer.
  • the control unit in that specific operation, may then to some extent take over control on the external data source, at least as regards the timing of data retrieval.
  • the control unit may postpone the data or information transfer to a later stage in case of a currently needed full power level.
  • Fig. 1 and 2 show schematic diagrams of a microwave oven 1.
  • the microwave oven 1 may comprise a cavity for receiving food to be prepared.
  • the microwave oven 1 comprises a microwave generator 2.
  • the microwave generator 2 may comprise a magnetron.
  • the microwave generator 2 comprises one or more solid-state microwave generators.
  • Such solid-state microwave generator may, for example, comprise a voltage controlled oscillator for generating a HF-signal with a certain frequency, phase and amplitude.
  • the solid-state microwave generator may comprise an amplifier (e.g. a microwave amplifier using GaN on SiC solid-state technology) in order to adapt the electric power of the HF-signal.
  • the microwave oven 1 may comprise a control entity 3 which controls the operation of the microwave generator 2.
  • the control entity 3 may be included in a power board of the microwave oven 1 or may be a separate entity which may also be operatively coupled with the power board, i.e. controls the power board.
  • the control entity 3 is operatively coupled with a wireless communication entity 4 by means of a control line or bus 5.
  • the control entity 3 is coupled via a user interface 6 with the wireless communication entity 4 (serial coupling).
  • the control line or bus provides a parallel coupling between the control entity 3 and the wireless communication entity 4, respectively the user interface 6.
  • the wireless communication entity 4 is coupled with an antenna 4.1 for transmitting/receiving information from a router or another wireless communication device.
  • the wireless communication entity 4 may provide WIFI communication capabilities.
  • the wireless communication entity 4 may provide a communication interface according to WIFI standard family IEEE 802.11.
  • the microwave generator 2 is operated according to a duty cycle. More in detail, said duty cycle operation of the microwave generator 2 is controlled by control entity 3.
  • the duty cycle comprises a first time period T1 in which the microwave generator 2 is activated, i.e. provides microwaves into the cavity, and a second time period T2 in which the microwave generator 2 is deactivated, i.e. the provision of microwaves into the cavity is stopped.
  • Fig. 3 shows a diagram illustrating the provision of microwave power into the cavity over time. It is worth mentioning, that - although only one duty cycle is shown - the duty cycle is periodically repeated.
  • the pause can be used for transmitting/receiving information based on the wireless communication entity 4.
  • the ratio between first time period T1 and second time period T2 is not fixed but depends on the power level, i.e. the microwave power requested by the user. In case that a higher power level is required, the first time period T1 is increased whereas the second time period T2 is decreased. On the other hand, in case that a lower power level is required, the first time period T1 is decreased whereas the second time period T2 is increased.
  • the duration of the duty cycle (i.e. the time period between two subsequent rising edges) is kept constant.
  • the duration of the duty cycle may be in the range of 20sec to 60sec, preferably in the range of 30sec to 50sec, specifically 40sec or essentially 40sec.
  • the second time period T2 of the duty cycle may cover 10% to 90% of the duration of the duty cycle, which is the sum of first and second time period T1, T2.
  • the ratio between the second time period T2 of the duty cycle and the sum of first and second time period T1, T2 is in the range of 10% to 90%.
  • any microwave-generating system comprising at least one component based on said solid-state technology which additionally or alternatively may be used, allows to shorten the entire duty cycle from the above-mentioned particular 40sec to less than 1sec.
  • the operation of the microwave generator 2 is periodically stopped in order to provide a time window for wireless communication based on wireless communication entity 4.
  • the second time period is not zero when requesting maximum power level, at least in order provide the possibility to trigger externally wireless communication, e.g. by an external computer device which may be a smartphone or a tablet computer.
  • the power provided by the microwave generator 2 may be, as shown in Fig. 4 , increased above nominal maximum power.
  • the microwave generator 2 may be powered in the first time period T1 at a power level 10% above nominal maximum power.
  • the power mean value over the whole duty cycle is equal or essentially equal to the situation when powering the microwave generator 2 at nominal maximum power during the whole duty cycle.
  • Such increase above nominal maximum power may be realized by providing the microwave oven with a microwave generator which can deliver a higher power level, which higher available power lever optionally could be kept secret in the declaration.
  • the increase may be realized by operating the microwave generator at a, particularly timely limited, overboost operational mode.
  • Fig. 5 shows a state chart according to which the microwave generator 2 and the wireless communication entity 4 are controlled if the microwave oven 1 is switched on.
  • the microwave generator 2 is in transmission mode, i.e. activated and provides microwaves into the cavity.
  • the wireless communication entity 4 is deactivated in order to avoid detrimental effects due to microwave transmission by the microwave generator 2.
  • the control entity 3 may calculate a heating cycle duration which may be equal to the first time period T1 mentioned before.
  • the control entity 3 may monitor the on-time of the microwave generator 2, i.e. the period of time, since which the microwave generator 2 is activated after terminating the last transmission/receive phase of the microwave generator 2.
  • the state of microwave oven changes to state S2, i.e. the microwave generator 2 is disabled and the wireless communication entity 4 is enabled in order to perform transmission/receipt of information via the air interface, specifically WIFI-transmission.
  • the control entity 3 monitors the duration of the present duty cycle (variable "MWDutyCycle"). If the value of the duration of the present duty cycle crosses the value of maximum duty cycle duration (variable “MWMaxDutyCy-cle")(decision D2), the control entity 3 may initiate a switching in state S1, i.e. the wireless communication entity 4 is disabled and the microwave generator 2 is enabled in order to start a new duty cycle and to activate the provision of microwaves into the cavity again. In addition, the variable "on-time” may be checked whether it is equal to the variable "heating cycle duration".

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electric Ovens (AREA)

Claims (15)

  1. Mikrowellenofen, umfassend mindestens einen Mikrowellengenerator (2) und eine Steuereinheit oder Steuerentität (3) zum Steuern des Mikrowellengenerators (2), wobei die Steuereinheit oder Steuerentität (3) dazu ausgelegt ist, den Mikrowellengenerator (2) gemäß einem Arbeitszyklus zu steuern, in dem der Mikrowellengenerator (2) in einer ersten Zeitperiode (T1) des Arbeitszyklus aktiviert und in einer zweiten Zeitperiode (T2) des Arbeitszyklus deaktiviert wird, wobei der Mikrowellenofen (1) ferner eine drahtlose Kommunikationseinheit oder Kommunikationsentität (4) umfasst, wobei die drahtlose Kommunikationseinheit oder Kommunikationsentität (4) durch die Steuereinheit oder Steuerentität (3) gesteuert wird, um eine drahtlose Kommunikation in der zweiten Zeitperiode (T2) des Arbeitszyklus durchzuführen, und wobei die zweite Zeitperiode (T2) des Arbeitszyklus vorzugsweise 10 % bis 90 % der Dauer des Arbeitszyklus abdeckt;
    dadurch gekennzeichnet, dass der Arbeitszyklus an die Zeit angepasst ist, die für einen vollständigen Informationsaustausch für jeden Kommunikationsprozess mittels drahtloser Kommunikation erforderlich ist.
  2. Mikrowellenofen nach Anspruch 1, wobei eine Mindestdauer der zweiten Zeitperiode (T2) durch die Übertragungsgröße eines Kommunikationspakets definiert ist und wobei insbesondere ein Maximum eines durch den Arbeitszyklus bereitstellbaren durchschnittlichen Leistungspegels von der Mindestdauer der zweite Zeitperiode (T2) abhängt.
  3. Mikrowellenofen nach einem der vorhergehenden Ansprüche, wobei der Mikrowellenofen (1) gezielt bei einem normalen Garmodus und bei einem drahtlosen Kommunikationsmodus betreibbar ist,
    wobei in dem normalen Garmodus der Mikrowellenofen (1) höchstens dauerhaft bei einer Nennleistung des Mikrowellengenerators (2) betreibbar ist und in dem drahtlosen Kommunikationsmodus der Mikrowellenofen (1) höchstens bei einem Bruchteil der Nennleistung des Mikrowellengenerators (2) betreibbar ist, wobei der Bruchteil durch das Verhältnis zwischen der ersten Zeitperiode (T1) und der Summe der ersten und zweiten Zeitperioden (T1, T2) definiert ist.
  4. Mikrowellenofen nach Anspruch 3, wobei der Mikrowellenofen (1) mindestens ein Garprogramm umfasst, wobei während eines Garprogramms, das den drahtlosen Kommunikationsmodus nutzt, mindestens ein Garparameter, insbesondere eine Garzeit und/oder ein Garprofil, im Vergleich zu dem jeweiligen Garparameter des normalen Garmodus modifiziert oder modifizierbar ist.
  5. Mikrowellenofen nach einem der vorhergehenden Ansprüche, wobei der Mikrowellengenerator (2) für eine begrenzte Zeitperiode während des drahtlosen Kommunikationsmodus bei einem Überlast-Betriebsmodus betreibbar ist.
  6. Mikrowellenofen nach einem der vorhergehenden Ansprüche, wobei der Arbeitszyklus, insbesondere die Arbeitszykluszeit, an die Frequenz der drahtlosen Kommunikation anpassbar ist.
  7. Mikrowellenofen nach einem der vorhergehenden Ansprüche, wobei der Mikrowellengenerator (2) einen Magnetron und/oder einen oder mehrere Festkörper-Mikrowellengeneratoren umfasst.
  8. Mikrowellenofen nach einem der vorhergehenden Ansprüche, wobei die Steuereinheit oder Steuerentität (3) direkt mit der drahtlosen Kommunikationseinheit oder Kommunikationsentität (4) über eine Steuerleitung oder einen Bus (5) oder eine elektronische Schaltung gekoppelt ist.
  9. Mikrowellenofen nach einem der Ansprüche 1 bis 7, wobei die Steuereinheit oder Steuerentität (3) mit der drahtlosen Kommunikationseinheit oder Kommunikationsentität (4) durch eine Steuerleitung oder einen Bus (5) über eine Benutzerschnittstelle (6) oder eine elektronische Schaltung gekoppelt ist.
  10. Mikrowellenofen nach einem der vorhergehenden Ansprüche, wobei der Mikrowellengenerator (2) mit der Steuereinheit oder Steuerentität (3) durch mindestens eine Steuerleitung und/oder über eine Leistungsschnittstelle, insbesondere eine Leitungsschnittstelle, die einer Leistungsplatine des Mikrowellenofens (1) zugeordnet ist, gekoppelt ist.
  11. Verfahren zum Betreiben eines Mikrowellenofens (1), der mindestens einen Mikrowellengenerator (2) und eine Steuereinheit oder Steuerentität (3) zum Steuern des Mikrowellengenerators (2) umfasst, wobei das Verfahren die folgenden Schritte umfasst:
    - Steuern des Mikrowellengenerators (2) gemäß einem Arbeitszyklus durch Aktivieren des Mikrowellengenerators (2) in einer ersten Zeitperiode (T1) des Arbeitszyklus und Deaktivieren des Mikrowellengenerators (2) in einer zweiten Zeitperiode (T2) des Arbeitszyklus; und
    - Durchführen einer drahtlosen Kommunikation in der zweiten Zeitspanne (T2) des Arbeitszyklus mittels einer drahtlosen Kommunikationseinheit oder Kommunikationsentität (4), die durch die Steuereinheit oder Steuerentität (3) gesteuert wird,
    wobei die Dauer eines Arbeitszyklus insbesondere im Bereich von 20 Sek. bis 60 Sek., vorzugsweise im Bereich von 30 Sek. bis 50 Sek., insbesondere 40 Sek. oder im Wesentlichen 40 Sek., liegt;
    dadurch gekennzeichnet, dass der Arbeitszyklus an die Zeit angepasst wird, die für einen vollständigen Informationsaustausch für jeden Kommunikationsprozess mittels drahtloser Kommunikation erforderlich ist.
  12. Verfahren nach Anspruch 11, wobei der Mikrowellenofen (1) gezielt bei einem normalen Garmodus und bei einem drahtlosen Kommunikationsmodus betreibbar ist, wobei in dem normalen Garmodus der Mikrowellenofen (1) höchstens dauerhaft bei einer Nennleistung des Mikrowellengenerators (2) betrieben wird und in dem drahtlosen Kommunikationsmodus der Mikrowellenofen (1) höchstens bei einem Bruchteil der Nennleistung des Mikrowellengenerators betrieben wird, wobei der Bruchteil durch das Verhältnis zwischen der ersten Zeitperiode (T1) und der Summe der ersten und zweiten Zeitperioden (T1, T2) definiert wird.
  13. Verfahren nach Anspruch 12, wobei zum Starten einer drahtlosen Kommunikation die Steuereinheit oder Steuerentität (3), insbesondere auf Anforderung durch eine externe Vorrichtung, vorzugsweise durch eine externe Kommunikations- und/oder Computervorrichtung, von dem normalen Garmodus zu dem drahtlosen Kommunikationsmodus umschaltet und vorzugsweise zu dem normalen Garmodus nach Beendigung der drahtlosen Kommunikation zurückkehrt.
  14. Verfahren nach einem der Ansprüche 11 bis 13, wobei Steuerinformationen bezüglich eines Aktivierens der drahtlosen Kommunikationseinheit oder Kommunikationsentität (4) direkt von der Steuereinheit oder Steuerentität (3) zu der drahtlosen Kommunikationseinheit oder Kommunikationsentität (4) oder über eine Benutzerschnittstelle (6) übertragen werden.
  15. Verfahren nach einem der Ansprüche 11 bis 14, wobei die drahtlose Kommunikationseinheit oder Kommunikationsentität (4) Dateninformationen von einer externen Datenquelle, insbesondere von einem Smartphone oder einem Computer, vorzugsweise von einem Tabletcomputer, während der zweiten Zeitperiode abruft oder herunterlädt.
EP19186445.3A 2019-07-16 2019-07-16 Mikrowellenofen Active EP3768045B1 (de)

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CN115175120A (zh) * 2022-07-22 2022-10-11 广东美的厨房电器制造有限公司 烹饪设备及其控制方法、装置和可读存储介质

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US6346692B1 (en) * 1999-09-20 2002-02-12 Agere Systems Guardian Corp. Adaptive microwave oven
US7308233B2 (en) 2002-10-10 2007-12-11 Aster Wireless System employing wideband wireless communication with super cycle detection
US20130008893A1 (en) * 2011-07-08 2013-01-10 General Electric Company Energy management in a microwave cooking appliance
JP2017118416A (ja) * 2015-12-25 2017-06-29 株式会社東芝 電子機器及び電磁波制御方法

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