EP2458936B1 - Domestic microwave device, module and method for reading data - Google Patents
Domestic microwave device, module and method for reading data Download PDFInfo
- Publication number
- EP2458936B1 EP2458936B1 EP11190223.5A EP11190223A EP2458936B1 EP 2458936 B1 EP2458936 B1 EP 2458936B1 EP 11190223 A EP11190223 A EP 11190223A EP 2458936 B1 EP2458936 B1 EP 2458936B1
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- cooking chamber
- microwave
- cooking
- transponder
- read device
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- 238000000034 method Methods 0.000 title claims description 7
- 238000010411 cooking Methods 0.000 claims description 68
- 238000004891 communication Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 4
- 230000005855 radiation Effects 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 7
- 108010085603 SFLLRNPND Proteins 0.000 description 4
- 238000003306 harvesting Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 244000144977 poultry Species 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Images
Classifications
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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
- H05B6/6447—Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors
- H05B6/6467—Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors using detectors with R.F. transmitters
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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
- H05B6/6447—Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors
- H05B6/645—Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors using temperature sensors
- H05B6/6452—Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors using temperature sensors the sensors being in contact with the heated product
Definitions
- the invention relates to a household microwave oven, comprising a microwave oven for cooking and at least one microwave resonant seal for microwave-tight sealing of the cooking chamber.
- the invention further relates to an insert device for use in a microwave-loadable cooking chamber, which is mikrowellenabdichtbar with at least one microwave resonant seal, wherein the insert device has a remote querable transponder and the transponder is coupled to at least one sensor and at least one antenna.
- the invention also relates to a method for reading out data of at least one sensor arranged within a microwave-tight cooking chamber, wherein the cooking chamber has at least one microwave resonant seal.
- core temperature probes or roasting thermometers are known, which are connected via a heat-resistant cable to a transmitter to be arranged outside of a cooking chamber.
- the transmitter may communicate via radio with a portable display unit (receiver), in particular for transmission of the core temperature sensed by the roasting thermometer. It is known that the transmitter and the portable display unit can communicate at a radio frequency of 433 MHz and a radio range of up to 30 meters.
- the transmitter and the portable display unit are each battery operated.
- ovens with a permanently installed in the oven antenna to receive radio signals of a fitted with a suitable transmitter Fridge thermometer.
- the antenna is connected via a guided by a baking oven muffle cable with an evaluation and / or display unit.
- a cooking appliance muffle and a Garellamuffel front closable cooking appliance door are typically electrically conductive and broadband not permeable to radiation.
- US 4,518,839 discloses a high-frequency heating device for detecting an internal temperature of an object located in a heating chamber as well as for controlling heating thereof, wherein the temperature change of the object is sensed as a change in the resistance value of a thermistor.
- the resistance change is converted into a change of an oscillation frequency of an oscillator and transmitted with ultrasound as a medium.
- the power supply for the transmitter circuit is provided by the fact that the high frequency with which the heating chamber is filled to heat the object is received by an antenna and rectified by a diode.
- the ultrasonic waves are picked up as a temperature signal of the object and processed by a microcomputer, so that the temperature of the object for heating control is detected.
- a household microwave oven comprising a microwave-loadable cooking chamber, and at least one microwave resonance seal in the form of a lambda / 4 door trap ( ⁇ / 4 trap) for microwave-tight sealing of the cooking chamber.
- Microwave resonance seals are known as microwave seals for sealing a gap between a cooking appliance muffle and a Garellomuffel front closable cooking appliance door.
- the household microwave oven further comprises a arranged outside the oven reading device for radio-based communication through the at least one lambda / 4-door trap into the cooking chamber inside. It is exploited that the microwave resonant seal is a highly effective shielding for the microwave radiation introduced into the cooking chamber, but for radiation outside of the microwave radiation introduced into the cooking chamber a much lower shielding is shown.
- the reader is arranged outside of the cooking chamber so that emerging from the cooking radio radiation is receivable.
- a wireless query of located within the Mikrowellenbeaufschlagbaren cooking chamber sensors while maintaining a microwave density of the microwave oven is possible.
- an antenna of the reader is arranged outside the oven behind the lambda / 4-door trap. This has the advantage that a cooking appliance muffle does not need to be modified.
- the reader is a transponder reader.
- the reading device is thus set up and arranged to emit a read-out signal into the cooking chamber, where the read-out signal is received by a transponder and combined with information (for example: modulated) is sent out again.
- the signal emitted by the transponder is received again by the transponder reader and, if necessary, processed to read the information.
- the transponder reader can be equipped in particular with a combined transmit / receive antenna.
- the transponder reader may in particular comprise a frequency-modulated continuous wave transmitter (FMCW).
- FMCW frequency-modulated continuous wave transmitter
- the transponder may for example be a temperature-resistant RFID unit, which is coupled to at least one sensor, e.g. a temperature sensor.
- the transponder combines the readout signal received by the transponder reader with measurement signals or measurement data of the at least one sensor.
- the transponder can be permanently installed in the cooking chamber or represent part of an optional insertable into the cooking chamber and removable therefrom use device.
- the reader may be a pure receiver which receives radio signals from the cooking chamber.
- the cooperating with the reader at least one transmitter of a deployment device is then in particular an autonomous or wireless transmitter, e.g. a battery powered transmitter or an "energy harvesting" transmitter.
- At least one antenna of the reader outside of the cooking chamber behind a microwave resonant seal in the form of a window, in particular lambda / 4-window is arranged, wherein the window is placed in a cooking space limiting, usually microwave-proof cooking appliance muffle, especially in a rear wall of the cooking appliance muffle.
- the antenna is not visible to a user.
- a position of the at least one antenna and the microwave resonance seal can be easily placed at a desired, in particular optimized to a signal transmission out, position, which allows for improved communication and / or utilization of space.
- the reader operates on a frequency in the range of 433 MHz (transmits or transmits and receives). This frequency has a sufficient frequency separation from the commonly used microwave frequencies of 2.4555 GHz and 915 MHz and is in a usable ISM band (ISM-A from 433.05 MHz to 434.79 MHz). However, the reader may also receive and, if necessary, transmit at a frequency which is above the microwave frequency used.
- the household microwave oven is an oven / microwave combination device.
- an insert device for use in a microwave-loadable cooking chamber, wherein the cooking chamber with at least one microwave resonant seal mikrowellenabdichtbar, the insert device has a remote querabagbaren transponder and the transponder is coupled to at least one sensor and at least one antenna.
- the antenna is followed by a microwave filtering (and the radio signals passing) filter downstream, to prevent damage to the transponder by the microwave radiation.
- the filter may in particular be a low-pass filter whose cut-off frequency is below the frequency of the microwave radiation. If the transponder's communication is carried out at a frequency which is above the microwave frequency, in particular a high-pass filter can be used as the filter.
- the filter may also be radio frequency (s) transmissive but microwave blocking bandpass filters.
- the deployment device may comprise an energy self-contained transmitter instead of the transceiver transponder, which may be e.g. battery powered or an energy harvesting transmitter.
- the at least one sensor has a temperature sensor, a humidity sensor and / or a pressure sensor.
- the transponder (or any other sensors) can then emit temperature information, moisture information or pressure information from the microwave-loadable cooking chamber.
- the at least one sensor has a temperature sensor and the insert device is a core temperature sensor.
- Other equipment can, for example steam cooking inserts (with a humidity sensor and possibly a Temperature sensor) and / or Druckgarein algorithms (with a pressure sensor and possibly a temperature sensor) include.
- the object is also achieved by a method for reading out data of at least one sensor arranged within a microwave-tight cooking chamber, wherein the cooking chamber has at least one microwave resonant seal in the form of a lambda / 4 door trap.
- the data is transmitted by means of radio signals which pass through the at least one in the form of a lambda / 4 door trap.
- the method may include remote reading of a radio transmitter, in particular a transponder, located in the cooking chamber.
- the method may be generally analogous to the devices described above.
- Fig.1 shows a sectional side view of a household microwave oven 1 in the form of a combined baking / microwave oven, which has a microwave-loadable cooking chamber 2.
- the cooking chamber 2 is bounded by an electrically conductive Garellamuffel 3 stainless steel and the Garausmuffel 3 front closing, microwave-safe cooking appliance door 4.
- the household microwave oven 1 has for treating located in the cooking chamber 2 food S a arranged outside the cooking chamber 2 top heat 5 and bottom heat 6 on.
- a magnetron 7 is present in the area of a ceiling of the cooking appliance muffle 3.
- the gap 8 occurring in the closed state of the cooking appliance door 4 for the cooking appliance muffle 3 is sealed microwave-tight by means of a resonance door seal in the form of a lambda / 4 trap 9.
- the household microwave oven 1 further comprises a arranged outside the cooking chamber 2 reader 10 in the form of a transponder reader for radio-based communication through the lambda / 4-trap 9 through into the cooking chamber 2 inside.
- An antenna 11 of the reader 10 is arranged outside of the cooking chamber 2 immediately behind the lambda / 4-trap 9.
- the reader 10 transmits via the antenna 11 at regular intervals or continuously radio signals, in particular on or in the range of 433 MHz.
- the use of the 433 MHz range allows the penetration of the lambda / 4 trap 9, since the lambda / 4 trap 9 is optimized for shielding the microwave radiation in the range of 2.455 GHz, but radio signals at approximately 433 MHz, possibly muted, lets through.
- the radio signals may in particular be frequency-modulated.
- the antenna 11 is also provided for receiving radio signals from the cooking chamber 2 on the same frequency or frequency range.
- a food S housed which can be treated by microwaves.
- a deployment device in the form of a core temperature sensor 12.
- the core temperature sensor 12 has a temperature sensor or sensor 13 on a plugged into the food S 7 mandrel.
- the core temperature sensor 12 also has a remote-sensing transponder 15, which is coupled to the temperature sensor 13.
- the transponder 15 may receive radio signals emitted by the reader 10, associate with information generated by the temperature sensor 13 (e.g., a sensed temperature or a value associated therewith), e.g. modulate, and then radiate again.
- the radio signal emitted by the transponder 15 and containing the temperature information (s) travels back through the lambda / 4 trap 9 to the antenna 11 of the reader 10.
- the temperature information (s) can be extracted from the returned radio signal and forwarded to a central control unit 16 of the household microwave oven 1, for example, for controlling a heating power and / or heating time, as indicated by the dash-dotted arrows.
- an antenna 17 of the transponder 15 is followed by a filter 18 which filters microwaves, in particular a low-pass filter, which blocks the microwaves.
- Fig.2 shows a sectional side view of a household microwave oven 19 according to a second embodiment.
- the antenna 11 of the reader 10 is arranged outside the cooking chamber 2 behind a microwave resonant seal in the form of a microwave-tight, but permeable to the radio signals window 20.
- the window 20 is here introduced into a rear wall 21 of the cooking appliance muffle 3 which is otherwise radiopaque to a region on the magnetron 7.
- This embodiment has the advantage that the window 20 can be attached to a position optimized for communication in the cooking chamber 2, e.g. with respect to a height and / or central position, for example in a side wall of the cooking appliance muffle, etc.
- a further advantage is that sufficient space is available for the antenna 11 and, if appropriate, can be mounted in the immediate vicinity of the remaining reading device 10. Also, the antenna 11 is not visible.
- the reader 10 may be coupled to a plurality of antennas.
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Electric Ovens (AREA)
- Constitution Of High-Frequency Heating (AREA)
Description
Die Erfindung betrifft ein Haushaltsmikrowellengerät, aufweisend einen mikrowellenbeaufschlagbären Garraum und mindestens eine Mikrowellen-Resonanzdichtung zum mikrowellendichten Abdichten des Garraums. Die Erfindung betrifft ferner ein Einsatzgerät zum Einsatz in einem mikrowellenbeaufschlagbaren Garraum, der mit mindestens einer Mikrowellen-Resonanzdichtung mikrowellenabdichtbar ist, wobei das Einsatzgerät einen fernabfragbaren Transponder aufweist und der Transponder mit mindestens einem Sensor gekoppelt ist und mindestens eine Antenne aufweist. Die Erfindung betrifft auch ein Verfahren zum Auslesen von Daten mindestens eines innerhalb eines mikrowellendichten Garraums angeordneten Sensors, wobei der Garraum mindestens eine Mikrowellen-Resonanzdichtung aufweist.The invention relates to a household microwave oven, comprising a microwave oven for cooking and at least one microwave resonant seal for microwave-tight sealing of the cooking chamber. The invention further relates to an insert device for use in a microwave-loadable cooking chamber, which is mikrowellenabdichtbar with at least one microwave resonant seal, wherein the insert device has a remote querable transponder and the transponder is coupled to at least one sensor and at least one antenna. The invention also relates to a method for reading out data of at least one sensor arranged within a microwave-tight cooking chamber, wherein the cooking chamber has at least one microwave resonant seal.
Für Backöfen sind Kerntemperaturfühler oder Bratenthermometer bekannt, welche über ein hitzebeständiges Kabel mit einem außerhalb eines Garraums anzuordnenden Sender verbunden sind. Der Sender kann über Funk mit einer tragbaren Anzeigeeinheit (Empfänger) kommunizieren, insbesondere für eine Übertragung der durch das Bratenthermometer abgefühlten Kerntemperatur. Es ist bekannt, dass der Sender und die tragbare Anzeigeeinheit auf eine Funkfrequenz von 433 MHz und einer Funkreichweite von bis zu 30 Meter kommunizieren können. Der Sender und die tragbare Anzeigeeinheit sind jeweils batteriebetrieben.For ovens, core temperature probes or roasting thermometers are known, which are connected via a heat-resistant cable to a transmitter to be arranged outside of a cooking chamber. The transmitter may communicate via radio with a portable display unit (receiver), in particular for transmission of the core temperature sensed by the roasting thermometer. It is known that the transmitter and the portable display unit can communicate at a radio frequency of 433 MHz and a radio range of up to 30 meters. The transmitter and the portable display unit are each battery operated.
Es sind ferner Backöfen mit einer in dem Garraum fest installierten Antenne bekannt, um Funksignale eines mit einem passenden Sender ausgerüsteten Bratenthermometers zu empfangen. Die Antenne ist über ein durch eine Backofenmuffel geführtes Kabel mit einer Auswerte-und/oder Anzeigeeinheit verbunden.There are also ovens with a permanently installed in the oven antenna to receive radio signals of a fitted with a suitable transmitter Fridge thermometer. The antenna is connected via a guided by a baking oven muffle cable with an evaluation and / or display unit.
Für Mikrowellengeräte sind solche Methoden jedoch nicht nutzbar, da durch die Kabel und zugehörigen Kabelöffnungen Mikrowellen aus dem Garräum auskoppeln können und so eine Mikrowellendichtigkeit des Garraums im Betrieb beeinträchtigen würden. Eine Gargerätemuffel und eine die Gargerätemuffel frontseitig verschließbare Gargerätetür sind typischerweise elektrisch leitend und für Strahlung breitbandig nicht durchlässig.For microwave ovens, however, such methods can not be used because microwaves can decouple out of the cooking space through the cables and associated cable openings and thus impair microwave oven oven cooking during operation. A cooking appliance muffle and a Gargerätemuffel front closable cooking appliance door are typically electrically conductive and broadband not permeable to radiation.
Es ist die Aufgabe der vorliegenden Erfindung, eine verbesserte Möglichkeit zum Auslesen von Daten aus einem mikrowellendichten Garraum bereitzustellen.It is the object of the present invention to provide an improved possibility for reading out data from a microwave-tight cooking chamber.
Diese Aufgabe wird gemäß den Merkmalen der unabhängigen Ansprüche gelöst. Bevorzugte Ausführungsformen sind insbesondere den abhängigen Ansprüchen entnehmbar.This object is achieved according to the features of the independent claims. Preferred embodiments are in particular the dependent claims.
Die Aufgabe wird gelöst durch ein Haushaltsmikrowellengerät, aufweisend einen mikrowellenbeaufschlagbaren Garraum, und mindestens eine Mikrowellen-Resonanzdichtungin Form einer Lambda/4-Türfalle (λ/4-Falle) zum mikrowellendichten Abdichten des Garraums. Mikrowellen-Resonanzdichtungen sind als Mikrowellendichtungen zur Abdichtung eines Spalts zwischen einer Gargerätemuffel und einer die Gargerätemuffel frontseitig verschließbaren Gargerätetür bekannt. Das Haushaltsmikrowellengerät weist ferner ein außerhalb des Garraums angeordnetes Lesegerät zur funkbasierten Kommunikation durch die mindestens eine Lambda/4-Türfalle hindurch in den Garraum hinein auf. Dabei wird ausgenutzt, dass die Mikrowellen-Resonanzdichtung für die in den Garraum eingebrachte Mikrowellenstrahlung eine hochwirksame Abschirmung darstellt, für Strahlung außerhalb der in den Garraum eingebrachten Mikrowellenstrahlung jedoch eine weit geringere Abschirmung zeigt. So ist es möglich, auf einer Frequenz, die einen ausreichenden Frequenzabstand von der Mikrowellenfrequenz aufweist, durch die Mikro-wellen-Resonanzdichtung hindurch per Funkstrahlung zu kommunizieren. Das Lesegerät ist außerhalb des Garraums so angeordnet, dass aus dem Garraum austretende Funkstrahlung empfangbar ist. Dadurch wird eine drahtlose Abfrage von innerhalb des mikrowellenbeaufschlagbaren Garraums befindlichen Sensoren unter Beibehaltung einer Mikrowellendichtigkeit des Mikrowellengeräts ermöglicht. Ferner ist eine Antenne des Lesegeräts außerhalb des Garraums hinter der Lambda/4-Türfalle angeordnet ist. Dies weist den Vorteil auf, dass eine Gargerätemuffel nicht modifiziert zu werden braucht.The object is achieved by a household microwave oven, comprising a microwave-loadable cooking chamber, and at least one microwave resonance seal in the form of a lambda / 4 door trap (λ / 4 trap) for microwave-tight sealing of the cooking chamber. Microwave resonance seals are known as microwave seals for sealing a gap between a cooking appliance muffle and a Gargerätemuffel front closable cooking appliance door. The household microwave oven further comprises a arranged outside the oven reading device for radio-based communication through the at least one lambda / 4-door trap into the cooking chamber inside. It is exploited that the microwave resonant seal is a highly effective shielding for the microwave radiation introduced into the cooking chamber, but for radiation outside of the microwave radiation introduced into the cooking chamber a much lower shielding is shown. Thus, it is possible to communicate by radio radiation at a frequency having a sufficient frequency separation from the microwave frequency through the micro-wave resonance gasket. The reader is arranged outside of the cooking chamber so that emerging from the cooking radio radiation is receivable. As a result, a wireless query of located within the Mikrowellenbeaufschlagbaren cooking chamber sensors while maintaining a microwave density of the microwave oven is possible. Further, an antenna of the reader is arranged outside the oven behind the lambda / 4-door trap. This has the advantage that a cooking appliance muffle does not need to be modified.
Es ist eine Ausgestaltung, dass das Lesegerät ein Transponder-Lesegerät ist. Das Lesegerät ist somit zur Aussendung eines Auslesesignals in den Garraum eingerichtet und angeordnet, wo das Auslesesignal von einem Transponder empfangen und mit Information verknüpft (z.B: moduliert) wieder ausgesendet wird. Das von dem Transponder ausgesandte Signal wird von dem Transponder-Lesegerät wieder empfangen und ggf. zum Auslesen der Information verarbeitet. Das Transponder-Lesegerät kann dazu insbesondere mit einer kombinierten Sende/Empfangsantenne ausgerüstet sein. Das Transponder-Lesegerät kann insbesondere einen frequenzmodulierten Dauerstrichsender (FMCW) aufweisen.It is an embodiment that the reader is a transponder reader. The reading device is thus set up and arranged to emit a read-out signal into the cooking chamber, where the read-out signal is received by a transponder and combined with information (for example: modulated) is sent out again. The signal emitted by the transponder is received again by the transponder reader and, if necessary, processed to read the information. The transponder reader can be equipped in particular with a combined transmit / receive antenna. The transponder reader may in particular comprise a frequency-modulated continuous wave transmitter (FMCW).
Der Transponder kann beispielsweise eine temperaturfeste RFID-Einheit sein, welche mit mindestens einem Sensor gekoppelt ist, z.B. einem Temperatursensor. Der Transponder verknüpft das von dem Transponder-Lesegerät empfangene Auslesesignal mit Messsignalen oder Messdaten des mindestens einen Sensors. Der Transponder kann fest in dem Garraum verbaut sein oder einen Teil eines wahlweise in den Garraum einbringbaren und daraus herausnehmbaren Einsatzgeräts darstellen.The transponder may for example be a temperature-resistant RFID unit, which is coupled to at least one sensor, e.g. a temperature sensor. The transponder combines the readout signal received by the transponder reader with measurement signals or measurement data of the at least one sensor. The transponder can be permanently installed in the cooking chamber or represent part of an optional insertable into the cooking chamber and removable therefrom use device.
Alternativ kann das Lesegerät ein reiner Empfänger sein, welcher Funksignale aus dem Garraum empfängt. Der mit dem Lesegerät zusammenarbeitende mindestens eine Sender eines Einsatzgeräts ist dann insbesondere ein autonom oder kabellos arbeitender Sender, z.B. ein batteriebetriebener Sender oder ein "Energy Harvesting"-Sender.Alternatively, the reader may be a pure receiver which receives radio signals from the cooking chamber. The cooperating with the reader at least one transmitter of a deployment device is then in particular an autonomous or wireless transmitter, e.g. a battery powered transmitter or an "energy harvesting" transmitter.
Es ist noch eine Ausgestaltung, dass mindestens eine Antenne des Lesegeräts außerhalb des Garraums hinter einer Mikrowellen-Resonanzdichtung in Form eines Fensters, insbesondere Lambda/4-Fensters, angeordnet ist, wobei das Fenster in einer den Garraum begrenzenden, üblicherweise mikrowellendichten Gargerätemuffel eingebracht ist, insbesondere in einer Rückwand der Gargerätemuffel. Dadurch ist die Antenne für einen Benutzer nicht einsehbar. Ferner kann eine Position der mindestens einen Antenne und der Mikrowellen-Resonanzdichtung einfach an einer gewünschten, insbesondere auf eine Signalübertragung hin optimierten, Position platziert werden, was eine verbesserte Kommunikation und/oder Ausnutzung eines Bauraums ermöglicht.It is still an embodiment that at least one antenna of the reader outside of the cooking chamber behind a microwave resonant seal in the form of a window, in particular lambda / 4-window, is arranged, wherein the window is placed in a cooking space limiting, usually microwave-proof cooking appliance muffle, especially in a rear wall of the cooking appliance muffle. As a result, the antenna is not visible to a user. Furthermore, a position of the at least one antenna and the microwave resonance seal can be easily placed at a desired, in particular optimized to a signal transmission out, position, which allows for improved communication and / or utilization of space.
Es ist auch eine Ausgestaltung, dass das Lesegerät auf einer Frequenz in einem Bereich von 433 MHz arbeitet (sendet oder sendet und empfängt). Diese Frequenz weist einen ausreichenden Frequenzabstand zu den häufig verwendeten Mikrowellenfrequenzen von 2,4555 GHz und 915 MHz auf und liegt in einem nutzbaren ISM-Band (ISM-A von 433,05 MHz bis 434,79 MHz). Jedoch kann das Lesegerät auch auf einer Frequenz empfangen und ggf. senden, welche oberhalb der verwendeten Mikrowellenfrequenz liegt.It is also an embodiment that the reader operates on a frequency in the range of 433 MHz (transmits or transmits and receives). This frequency has a sufficient frequency separation from the commonly used microwave frequencies of 2.4555 GHz and 915 MHz and is in a usable ISM band (ISM-A from 433.05 MHz to 434.79 MHz). However, the reader may also receive and, if necessary, transmit at a frequency which is above the microwave frequency used.
Es ist ferner eine Ausgestaltung, dass das Haushaltsmikrowellengerät ein Backofen/Mikrowellen-Kombinationsgerät ist.It is also an embodiment that the household microwave oven is an oven / microwave combination device.
Die Aufgabe wird auch gelöst durch ein Einsatzgerät zum Einsatz in einem mikrowellenbeaufschlagbaren Garraum, wobei der Garraum mit mindestens einer Mikrowellen-Resonanzdichtung mikrowellenabdichtbar ist, das Einsatzgerät einen fernabfragbaren Transponder aufweist und der Transponder mit mindestens einem Sensor gekoppelt ist und mindestens eine Antenne aufweist. Der Antenne ist ein Mikrowellen filterndes (und die Funksignale durchlassendes) Filter nachgeschaltet, um eine Beschädigung des Transponders durch die Mikrowellenstrahlung zu verhindern. Das Filter kann insbesondere ein Tiefpassfilter sein, dessen Grenzfrequenz unterhalb der Frequenz der Mikrowellenstrahlung liegt. Wird die Kommunikation des Transponders auf einer Frequenz durchgeführt, welche oberhalb der Mikrowellenfrequenz liegt, kann insbesondere ein Hochpassfilter als das Filter eingesetzt werden. Das Filter kann auch ein für die Funkfrequenz(en) durchlässiges, aber für die Mikrowellen sperrendes Bandpassfilter sein.The object is also achieved by an insert device for use in a microwave-loadable cooking chamber, wherein the cooking chamber with at least one microwave resonant seal mikrowellenabdichtbar, the insert device has a remote querabagbaren transponder and the transponder is coupled to at least one sensor and at least one antenna. The antenna is followed by a microwave filtering (and the radio signals passing) filter downstream, to prevent damage to the transponder by the microwave radiation. The filter may in particular be a low-pass filter whose cut-off frequency is below the frequency of the microwave radiation. If the transponder's communication is carried out at a frequency which is above the microwave frequency, in particular a high-pass filter can be used as the filter. The filter may also be radio frequency (s) transmissive but microwave blocking bandpass filters.
Alternativ kann das Einsatzgerät anstelle des fernabfragbaren Transponders einen energieautonomen Sender aufweisen, welcher z.B. batteriebetrieben ist oder ein Energy Harvesting-Sender ist.Alternatively, the deployment device may comprise an energy self-contained transmitter instead of the transceiver transponder, which may be e.g. battery powered or an energy harvesting transmitter.
Es ist eine Ausgestaltung, dass der mindestens eine Sensor einen Temperatursensor, einen Feuchtesensor und/oder einen Drucksensor aufweist. Der Transponder (oder jegliche andere Sensoren) kann dann eine Temperaturinformation, Feuchteinformation bzw. Druckinformation aus dem mikrowellenbeaufschlagbaren Garraum aussenden.It is an embodiment that the at least one sensor has a temperature sensor, a humidity sensor and / or a pressure sensor. The transponder (or any other sensors) can then emit temperature information, moisture information or pressure information from the microwave-loadable cooking chamber.
Es ist eine spezielle Ausgestaltung, dass der mindestens eine Sensor einen Temperatur-sensor aufweist und das Einsatzgerät ein Kerntemperaturfühler ist. Andere Einsatzgeräte können beispielsweise Dampfgareinsätze (mit einem Feuchtesensor und ggf. einem Temperatursensor) und/oder Druckgareinsätze (mit einem Drucksensor und ggf. einem Temperatursensor) umfassen.It is a special embodiment that the at least one sensor has a temperature sensor and the insert device is a core temperature sensor. Other equipment can, for example steam cooking inserts (with a humidity sensor and possibly a Temperature sensor) and / or Druckgareinsätze (with a pressure sensor and possibly a temperature sensor) include.
Die Aufgabe wird auch gelöst durch ein Verfahren zum Auslesen von Daten mindestens eines innerhalb eines mikrowellendichten Garraums angeordneten Sensors, wobei der Garraum mindestens eine Mikrowellen-Resonanzdichtung in Form einer Lambda/4-Türfalle aufweist. Die Daten werden mittels Funksignalen übertragen, welche durch die mindestens eine in Form einer Lambda/4-Türfalle hindurchlaufen.The object is also achieved by a method for reading out data of at least one sensor arranged within a microwave-tight cooking chamber, wherein the cooking chamber has at least one microwave resonant seal in the form of a lambda / 4 door trap. The data is transmitted by means of radio signals which pass through the at least one in the form of a lambda / 4 door trap.
Das Verfahren kann insbesondere ein Fernauslesen eines in dem Garraum befindlichen Funksender, insbesondere Transponders, umfassen.In particular, the method may include remote reading of a radio transmitter, in particular a transponder, located in the cooking chamber.
Das Verfahren kann allgemein analog zu den oben beschriebenen Vorrichtungen ausgebildet werden.The method may be generally analogous to the devices described above.
In den folgenden Figuren wird die Erfindung anhand von Ausführungsbeispielen schematisch genauer beschrieben. Dabei können zur Übersichtlichkeit gleiche oder gleichwirkende Elemente mit gleichen Bezugszeichen versehen sein.
- Fig.1
- zeigt als Schnittdarstellung in Seitenansicht ein Haushaltsmikrowellengerät gemäß einer ersten Ausführungsform; und
- Fig.2
- zeigt als Schnittdarstellung in Seitenansicht ein Haushaltsmikrowellengerät gemäß einer zweiten Ausführungsform.
- Fig.1
- shows a sectional side view of a household microwave appliance according to a first embodiment; and
- Fig.2
- shows a sectional side view of a household microwave oven according to a second embodiment.
Das Haushaltsmikrowellengerät 1 weist ferner ein außerhalb des Garraums 2 angeordnetes Lesegerät 10 in Form eines Transponder-Lesegeräts zur funkbasierten Kommunikation durch die Lambda/4-Falle 9 hindurch in den Garraum 2 hinein auf. Eine Antenne 11 des Lesegeräts 10 ist dazu außerhalb des Garraums 2 unmittelbar hinter der Lambda/4-Falle 9 angeordnet. Das Lesegerät 10 sendet über die Antenne 11 in regelmäßigen Abständen oder kontinuierlich Funksignale aus, insbesondere auf oder im Bereich von 433 MHz. Die Verwendung des Bereichs von 433 MHz ermöglicht die Durchdringung der Lambda/4-Falle 9, da die Lambda/4-Falle 9 auf eine Abschirmung der Mikrowellenstrahlung im Bereich von 2,455 GHz hin optimiert ist, aber Funksignale bei ca. 433 MHz, ggf. gedämpft, hindurchlässt.The
Die Funksignale können insbesondere frequenzmoduliert sein. Die Antenne 11 ist auch zum Empfang von Funksignalen aus dem Garraum 2 auf der gleichen Frequenz oder Frequenzbereich vorgesehen.The radio signals may in particular be frequency-modulated. The
In dem Garraum 2 ist eine Speise S untergebracht, welche mittels Mikrowellen behandelt werden kann. In der Speise S, z.B. Geflügel oder Braten, steckt ein Einsatzgerät in Form eines Kerntemperaturfühlers 12. Der Kerntemperaturfühler 12 weist einen Temperatur-sensor oder -fühler 13 an einem in die Speise S eingesteckten Dorn 14 auf. Der Kemtemperaturfühler 12 weist ferner einen fernabfragbaren Transponder 15 auf, welcher mit dem Temperatursensor 13 gekoppelt ist. Der Transponder 15 kann von dem Lesegerät 10 ausgesandte Funksignale empfangen, mit von dem Temperatursensor 13 erzeugter Information (z.B. einer abgefühlten Temperatur oder einen damit zusammenhängenden Wert) verknüpfen, z.B. modulieren, und dann wieder abstrahlen. Das von dem Transponder 15 abgestrahlte, die Temperaturinformation(en) enthaltende, Funksignal läuft durch die Lambda/4-Falle 9 hindurch zu der Antenne 11 des Lesegeräts 10 zurück. In dem Lesegerät 10 kann die Temperaturinformation(en) aus dem zurückgesandten Funksignal extrahiert werden und an eine zentrale Steuereinheit 16 des Haushaltsmikrowellengeräts 1 weitergeleitet werden, beispielsweise für eine Steuerung einer Heizleistung und/oder Heizdauer, wie durch die strichgepunkteten Pfeile angedeutet..In the
Damit der Transponder 15 während eines Mikrowellenbetriebs nicht gestört oder zerstört wird, ist einer Antenne 17 des Transponders 15 ein Mikrowellen filterndes Filter 18, insbesondere Tiefpassfilter, nachgeschaltet, welches die Mikrowellen blockiert.So that the
Diese Ausführungsform weist den Vorteil auf, dass das Fenster 20 an einer zur Kommunikation in den Garraum 2 hin optimierten Position angebracht werden kann, z.B. bezüglich einer Höhe und/oder zentralen Position, z.B auch in einer Seitenwand der Gargerätemuffel usw. Ein weiterer Vorteil besteht darin, dass für die Antenne 11 ein ausreichender Bauraum zur Verfügung steht und ggf. in unmittelbarer Nähe des restlichen Lesegeräts 10 angebracht sein kann. Auch ist die Antenne 11 nicht sichtbar.This embodiment has the advantage that the
Selbstverständlich ist die vorliegende Erfindung nicht auf die gezeigten Ausführungsbeispiele beschränkt. So können Merkmale der verschiedenen Ausführungsbeispiele kombiniert werden.Of course, the present invention is not limited to the embodiments shown. Thus, features of the various embodiments can be combined.
Beispielsweise kann das Lesegerät 10 mit mehreren Antennen gekoppelt sein.For example, the
- 11
- HaushaltsmikrowellengerätDomestic microwave oven
- 22
- Garraumoven
- 33
- Gargerätemuffelcooking appliance muffle
- 44
- Gargerätetürcooking appliance
- 55
- Oberhitzetop heat
- 66
- Unterhitzeunder heat
- 77
- Magnetronmagnetron
- 88th
- Spaltgap
- 99
- Lambda/4-FalleLambda / 4 trap
- 1010
- Lesegerätreader
- 1111
- Antenne des LesegerätsAntenna of the reader
- 1212
- KerntemperaturfühlerCore probe
- 1313
- Temperaturfühlertemperature sensor
- 1414
- Dornmandrel
- 1515
- Transpondertransponder
- 1616
- Steuereinheitcontrol unit
- 1717
- Antenne des TransponderAntenna of the transponder
- 1818
- Filterfilter
- 1919
- HaushaltsmikrowellengerätDomestic microwave oven
- 2020
- Fensterwindow
- 2121
- Rückwandrear wall
- SS
- Speisefood
Claims (6)
- Domestic microwave appliance (1; 19), having a cooking chamber (2) to which microwaves can be applied and a read device (10) arranged outside the cooking chamber (2) for communication into the cooking chamber (2), wherein the read device (10) is designed for radio-based communication into the cooking chamber (2), and having at least one microwave resonance seal (9; 20) in the form of a λ/4 door handle (9) for sealing the cooking chamber (2) against microwaves,
characterised in that
the read device (10) is designed for radio-based communication through the at least one λ/4 door handle (9) and for this purpose an antenna (11) of the read device (10) is arranged outside the cooking chamber (2) behind the λ/4 door handle (9). - Domestic microwave appliance (1; 19) according to claim 1, characterised in that the read device (10) is a transponder read device.
- Domestic microwave appliance (19) according to one of the preceding claims, characterised in that at least one antenna (11) of the read device (10) is arranged outside the cooking chamber (2) behind a microwave resonance seal in the form of a window (20), wherein the window (20) is introduced in a cooking appliance muffle (3) delimiting the cooking chamber (2), in particular in a rear wall (21) of the cooking appliance muffle (3).
- Domestic microwave appliance (1; 19) according to one of the preceding claims, characterised in that the read device (10) operates on a frequency in a region of 433 MHz.
- Domestic microwave appliance (1; 19) according to one of the preceding claims, characterised in that the domestic microwave appliance (1; 19) is a combined oven/microwave appliance.
- Method for reading out data of at least one sensor arranged inside a cooking chamber (2) sealed against microwaves, wherein the cooking chamber (2) has at least one microwave resonance seal (9) in the form of a λ/4 door handle (9) and the data is transmitted by means of radio signals, characterised in that the radio signals pass through the at least one λ/4 door handle (9).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201010062162 DE102010062162A1 (en) | 2010-11-30 | 2010-11-30 | Household microwave oven, implement and method of reading data |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2458936A1 EP2458936A1 (en) | 2012-05-30 |
EP2458936B1 true EP2458936B1 (en) | 2016-08-10 |
Family
ID=45372192
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11190223.5A Active EP2458936B1 (en) | 2010-11-30 | 2011-11-23 | Domestic microwave device, module and method for reading data |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2458936B1 (en) |
DE (1) | DE102010062162A1 (en) |
ES (1) | ES2587831T3 (en) |
PL (1) | PL2458936T3 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015215772A1 (en) * | 2015-08-19 | 2017-02-23 | BSH Hausgeräte GmbH | Core temperature probe, microwave oven and system |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2116829A1 (en) * | 2008-05-08 | 2009-11-11 | Electrolux Home Products Corporation N.V. | Temperature treatment device for active temperature treatment of a substance |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4297557A (en) * | 1976-05-03 | 1981-10-27 | Robertshaw Controls Company | Microwave oven temperature indicator and control means |
CA1200583A (en) * | 1982-03-03 | 1986-02-11 | Shunichi Taguchi | High-frequency heating apparatus with wireless temperature probe |
ITMO20040193A1 (en) * | 2004-07-23 | 2004-10-23 | Angelo Grandi Cucine Spa | SYSTEM AND PROBE FOR REVALING A PARAMETER |
-
2010
- 2010-11-30 DE DE201010062162 patent/DE102010062162A1/en not_active Withdrawn
-
2011
- 2011-11-23 EP EP11190223.5A patent/EP2458936B1/en active Active
- 2011-11-23 ES ES11190223.5T patent/ES2587831T3/en active Active
- 2011-11-23 PL PL11190223T patent/PL2458936T3/en unknown
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2116829A1 (en) * | 2008-05-08 | 2009-11-11 | Electrolux Home Products Corporation N.V. | Temperature treatment device for active temperature treatment of a substance |
Also Published As
Publication number | Publication date |
---|---|
DE102010062162A1 (en) | 2012-05-31 |
PL2458936T3 (en) | 2017-02-28 |
ES2587831T3 (en) | 2016-10-27 |
EP2458936A1 (en) | 2012-05-30 |
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