EP2380393A1 - Intelligentes lebensmittelzubereitungsgerät - Google Patents
Intelligentes lebensmittelzubereitungsgerätInfo
- Publication number
- EP2380393A1 EP2380393A1 EP09764484A EP09764484A EP2380393A1 EP 2380393 A1 EP2380393 A1 EP 2380393A1 EP 09764484 A EP09764484 A EP 09764484A EP 09764484 A EP09764484 A EP 09764484A EP 2380393 A1 EP2380393 A1 EP 2380393A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- food preparation
- temperature
- data
- integrated circuit
- transmitter
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
- H05B1/0227—Applications
- H05B1/0252—Domestic applications
- H05B1/0258—For cooking
- H05B1/0261—For cooking of food
- H05B1/0266—Cooktops
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/04—Arrangements for transmitting signals characterised by the use of a wireless electrical link using magnetically coupled devices
-
- 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
- H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
- H05B2213/06—Cook-top or cookware capable of communicating with each other
-
- 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
- H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
- H05B2213/07—Heating plates with temperature control means
Definitions
- the invention relates to a food preparation device, in particular cooking utensils, with a transmitter and an energy absorber for the power supply of the transmitter and an operating device for operating the food preparation device.
- EP 0 098 491 A2 discloses a telemetry device which has at least one interrogation station and at least one measuring station, which are equipped with at least one information transmitter or a modulator and with an information receiver and in each case one antenna.
- the measuring station is provided with a measuring device for carrying out the measurements.
- the interrogation station is equipped with an energy transmitter, which transmits the energy required for the measuring station.
- the measuring station has an energy receiver, which is followed by a rectifier, which is provided for the entire current or voltage supply of the measuring station. If several measuring stations at the same time transmit their measured values to a polling station, then each measuring station is provided with an additional memory which contains a special opening code.
- the addressed measuring station outputs its information only when the opening code sent by the interrogation station coincides with the opening code contained in the memory.
- the measuring station may comprise a microcomputer belonging to a signal processing and control unit of the measuring station. Measured by the microcomputer measured data arrive via its output in the form of a control signal to the modulator, which is connected downstream of the microcomputer, and which is in communication with the antenna. The modulator changes the resistance of the antenna according to the signal supplied to it.
- the measuring station can be housed in a button of a lid of a Gar relienisses.
- the food preparation device has at least one transmitter for the wireless transmission of data.
- a transmitting device for access to a transmission channel to an external unit is generally used under a transmitter. stood.
- the food preparation apparatus further includes at least one integrated circuit for processing data and outputting data to the transmitter based on the processing.
- the integrated circuit can thus process data, for. B. read, modify, link, caching, format, etc., and output this data or derived data to the transmitter for transmission to an external unit.
- Data to be processed may be provided by another unit, e.g. As a sensor, data supplied or be stored in or on the integrated circuit data, z. B. an identifier or property of the food preparation device.
- the transmitter of the food preparation device is not battery operated but derives its energy essentially from an electromagnetic excitation field.
- the food preparation device has at least one energy absorber for the continuous absorption of energy from the electromagnetic excitation field.
- Energy taken up from the electromagnetic excitation field can be used on the one hand to supply power to the cooking appliance (operation of a heating element, etc.) and, on the other hand, to feed at least the integrated circuit and the transmitter, and possibly other low-voltage components as well.
- the energy absorber may be followed by a switching regulator, which rectifies the energy coupled out of the power supply to a voltage level suitable for operating the low-voltage components.
- the food preparation device as well as the integrated circuit and the transmitter can be fed by the energy absorber for their operation.
- the integrated circuit can thus be made permanently available a high electrical power, which allows the use of particularly efficient and relatively inexpensive electronic components.
- energy storage can be present, for.
- the volume of transmitted data can be significantly higher than, for example, with RFID (radio brand) systems without their own power supply or even with low-energy electronics.
- data can be processed flexibly.
- the use of a high-performance integrated circuit enables intelligent power management of the operating device depending on food preparation device and process parameters of the attached devices, e.g. B. a power distribution to several energy transmission areas (eg., Cooking zones) as a function of a maximum power consumption of the attached devices.
- the integrated circuit may be configured as an analog integrated circuit, as a digital integrated circuit or as a mixed analog and digital integrated circuit ("mixed signal IC").
- the integrated circuit can be designed, for example, as ASIC, DSP, FPGA, or microcontroller.
- the integrated circuit may comprise a data memory and / or be connected to a data memory, for. B. an EEPROM.
- the type of the energy absorber is basically not limited.
- the energy absorber can have a coil with corresponding power windings, in particular for tapping energy from an electromagnetic excitation field in the form of an alternating magnetic field.
- a coil as Energyaufêt the food preparation device can be used in particular for inductive or transformer energy transfer (energy transfer between two inductors by means of an alternating magnetic field), in which the electromagnetic see excitation field is generated by means of an external primary coil.
- transformer energy transfer is described for example in DE 10 2006 017 800 A1.
- the transmitter may be at least partially integrated in the integrated circuit. As a result, a particularly compact design is achieved. Alternatively, the transmitter is a different device from the integrated circuit.
- the transmitter may include a modulator and an antenna connected downstream of the modulator.
- the modulator may be integrated into the integrated circuit, but not the antenna.
- the modulator can modulate the data signals by Amplotide Shift Keying (ASK) onto a carrier signal for wireless transmission of the modulated carrier signal via the antenna.
- ASK Amplotide Shift Keying
- OOK on-off keying
- Other possible, preferably digital, types of modulation may include, for example, Frequency Shift Keying (FSK, eg in the form of a Gaussian Minimum Shift Keying, GMSK) and Phase Shift Keying (PSK, e.g.
- the data transmission is advantageously carried out with a high-frequency carrier signal, wherein a frequency difference between the carrier signal and a frequency of the electromagnetic excitation field for feeding the food preparation device is selected so that the frequencies of energy transmission (power transmission) and signal transmission do not interfere with each other. This is advantageously done taking into account a disturbance spectrum of the energy transfer.
- the power transfer preferably moves in a range between 0 kW and 4 kW.
- the antenna can be embodied in particular as a coil-like winding (s) in the case of a transformatory energy transmission, since the operating device and the food preparation device for inductive coupling are already set up there via corresponding coils and already have a sufficiently small distance.
- the signal transmission can be transmitted over the same turns over which the power is transmitted, for. From a secondary coil to the primary coil in unidirectional data transmission and between the two coils in bidirectional data transmission. This eliminates the need for a separate antenna.
- the signal transmission can be carried out via inductively coupled signal windings in the operating device and food preparation device, which are designed separately from the power windings for power transmission.
- the signal winding (s) may or may in particular be arranged on a plane with the power windings, for. B. the power windings on the outside circumferentially.
- the data transmission can also be done by other means, for. Via a radio air path, an optical data transmission channel, an IR data transmission channel and so on.
- the carrier frequency can advantageously be the processor clock of the integrated circuit.
- the food preparation device can be equipped only with a transmitter, which simplifies the structure of the food preparation device and reduces costs (simplification of the electronics of the food preparation device).
- the communication is then carried out unidirectionally from the food preparation device to the operating device (base station).
- the food preparation device may also have a receiver function.
- the communication can then be bidirectional between see food preparation device and operating device done.
- the food preparation device may be equipped with a separate receiver (receiver).
- the receiver can then have a demodulator connected after a receiving antenna, wherein the demodulator can also be integrated into the integrated circuit.
- the transmitter can advantageously be designed as a transceiver (transmitter / receiver).
- the transceiver may include a modem connected downstream of a transmit receive antenna, which modem may also be integrated into the integrated circuit.
- the received data can be processed by the integrated circuit.
- the data transmission from the food preparation device to the operating device can be initiated, for example, cyclically and / or at the request of the operating device in the case of bidirectional data transmission, but not on request in the case of unidirectional data transmission.
- some data eg measurement data or device status data
- other data eg identification data
- modems may be present on both the operating device and the food preparation device.
- a modulator on the food preparation device and a demodulator on the operating device suffice.
- the data exchange can take place both in full-duplex mode and in half-duplex mode.
- the food preparation apparatus may further include at least one sensor unit for sensing at least one physical measure, wherein the at least one integrated circuit is configured to process sensor data of the at least one sensor unit and to output data to the transmitter based on that processing.
- a measured variable which serves to set or regulate a cooking process, such as a cooking temperature, a pressure (eg in the case of a pressure cooker), a humidity, a fill level and so on, can be sensed as the physical measured variable.
- a measured variable which serves to set or regulate a cooking process, such as a cooking temperature, a pressure (eg in the case of a pressure cooker), a humidity, a fill level and so on, can be sensed as the physical measured variable.
- a corresponding temperature control, pressure control, humidity control, etc. is made possible.
- identification data can be, for example, information about a device type (eg pot, pan, small domestic appliance), a system affiliation (eg for a specific device series), a design, a type and number of sensors, control parameters, material properties (eg. A heat conductivity of a cooking utensil floor), coefficients (eg, PID coefficients for PID control), etc. of the food preparation apparatus.
- a device type eg pot, pan, small domestic appliance
- system affiliation eg for a specific device series
- control parameters eg. A heat conductivity of a cooking utensil floor
- coefficients eg, PID coefficients for PID control
- the device status data may include, for example, information about a presence of a device, an on / off state, a power consumption, a centering of the food preparation device with respect to a power transmission area (cooking zone or the like), and so forth.
- the information about the centering of the food preparation device allow a readjustment of the energy transfer at not centered pot or for efficient energy transfer (adaptation of the parameters of the electromagnetic excitation field) can be used.
- the identification data a user interface of the operating device can also be adapted individually to the food preparation device.
- foodstuffs can be detected by the transmitted data, in particular the measured data, such as cooking conditions in a cooking utensil or an end of a food preparation with a toaster (ready to toast) or a coffee machine (coffee run through) etc. Also, by the data transmission, a performance of cooking programs for different foods.
- the food preparation apparatus may further include an own temperature determining unit for determining an inherent temperature of the integrated circuit.
- the integrated circuit can be set up in particular for processing self-temperature data and for outputting data to the transmitter based on the processing of the self-temperature data. As a result, for the operation of the integrated circuit harmful temperature values can be detected early and avoided as a result.
- the self-temperature determination unit may have a (self) temperature sensor. This can be arranged outside the integrated circuit, for. In a space region representative of the determination of the intrinsic temperature (for example on a surface of the integrated circuit or at a distance therefrom), and with the integrated sound system. be connected.
- the self-temperature determination unit can be integrated in the integrated circuit; while the self-temperature sensor does not need to be a separate sensor, but can determine the temperature indirectly, for example, for. B. on a temperature-dependent delay determination, voltage level determination, resistance value determination, clock rate determination, etc.).
- a self-temperature determination unit is understood to be a unit which is able to deduce the sensed temperature from a sensed primary variable (voltage, resistance, etc.).
- the processing of the self-temperature data can be done in the integrated circuit, in the operating device or partially in the integrated circuit and partly in the operating device.
- the integrated circuit can process the self-temperature data for transmission to the operating device, for. For example, format it while the operating device uses the self-temperature data to control the food preparation device.
- the processing of the self-temperature data may include a comparison of the self-temperature with at least one self-temperature threshold.
- the self-temperature threshold may for example be predetermined and stored in a memory connected to the integrated circuit or integrated therein.
- a warning can be output, the excitation field can be purposefully weakened and in extreme cases even switched off.
- the self-temperature may be compared with a plurality of self-threshold temperatures, and different actions may be performed depending on the level of the threshold.
- the operating device issues an audible and / or visual warning signal which can indicate to an operator the critical condition and cause him to counteract.
- reaching or exceeding the first, lower self-threshold temperature can be an indication of a low water level of a cooking utensil ('threatening empty cooking'), whereupon the operator can react, for example, with a refilling of water of the cooking utensil.
- the operating Device that the electromagnetic excitation field is reduced by, for example 25% in order to prevent rapid overheating and interrupting the cooking cycle. If the value of the self-temperature reaches or exceeds a second, higher self-threshold temperature (eg after a long period of empty cooking), the operating device switches off the excitation field in order to prevent damage to the integrated circuit (and possibly other temperature-sensitive components).
- various self-temperature thresholds may be associated with different levels of reduction (eg, a reduction of 5%, 10%, 25%, etc.) of the strength of the excitation field.
- the reduction may in particular be the stronger, the higher the exceeded or exceeded Eigentemperaturschwellwert is.
- certain reactions can be reversed with a reduction in the temperature of the person, for.
- the warning signal can be switched off and / or a higher level of power can again be generated, eg. As the full strength of the excitation field can be adjusted.
- an intrinsic temperature threshold overshoot signal may include a warning signal, a down control signal for reducing the electromagnetic excitation field, and / or a shutdown signal for switching off the electromagnetic excitation field.
- the food preparation device may be designed in particular as cooking dishes, z. B. as a pot, pan, etc.
- the operating device is set up to operate such a food preparation device and for this purpose has at least one excitation field generating means, in particular coil ('primary coil') for inductive or transformer energy transmission, in order to generate an electromagnetic excitation field, in particular alternating magnetic field.
- the operating device has a receiver which is set up to receive data from the transmitter of the food preparation device.
- the operation device also has a control unit for setting a strength of the electromagnetic excitation field on the basis of the received data.
- the control unit may be configured to perform a comparison of the self-temperature with at least one self-temperature threshold value upon receipt of self-temperature data.
- the operating device may, when the self-temperature reaches or exceeds a self-temperature threshold, give a warning signal and / or reduce a strength of the electromagnetic excitation field, including turn off.
- the operating device may reduce a magnitude of the electromagnetic excitation field in response to a magnitude of one of a plurality of self-temperature thresholds.
- control unit can also be set up to react accordingly upon receipt of an own temperature threshold overflow signal.
- the control unit can in particular (a) output a visual and / or audible warning upon receipt of a warning signal from the food preparation device, (b) reduce the electromagnetic excitation field, in particular down-regulate, and / or (c) upon receipt of a switch-off signal Switch off electromagnetic excitation field.
- the control unit can thus counteract the threat of overheating of the integrated circuit.
- a power of not more than 10 watts is consumed for data communication, especially not more than 5 watts, in particular not more than 3 watts.
- the power may also be needed to operate an electronics of the attachment, which uses the signal coil as an antenna.
- a minimum frequency of the power signal or the data signal is at least ten times higher than a maximum frequency of the data signal and the power signal, respectively.
- the data signal may preferably have a frequency in the MHz range or higher, preferably in a range from a frequency of 4 MHz or z. B. a frequency in the frequency range between 4 MHz and 32 MHz.
- the power signal advantageously has a frequency of not more than 400 KHz, in particular a frequency in the frequency range between 100 KHz and 400 KHz.
- data signals may be transmitted at frequencies below the frequency band for power transmission.
- a power of not more than 10 watts is consumed for data communication, especially not more than 5 watts, in particular not more than 3 watts.
- the power may also be needed to operate an electronics of the attachment, which uses the signal coil as an antenna.
- a method for operating such a food preparation device may include, for example, the following steps: monitoring a self-temperature (by means of the integrated circuit of the food preparation device and / or by means of the operating device) and, if the self-temperature reaches or exceeds a predetermined self-threshold temperature, issuing a warning signal and / or down-regulation (possibly including shutdown) of the electromagnetic excitation field.
- Fig. 1 shows a system of an operating device for operating a cooking utensil by means of transformatory energy transmission and a pot arranged thereon as cooking utensils;
- FIG. 2 shows a sketch of a simplified control structure of the system from FIG. 1.
- Fig. 1 shows an intelligent cooking utensil 101, which is designed as an "electric pot” and represents an electrical consumer.
- the cooking utensil 101 has a main body 102 with a lid and handles, and an energy absorber 1 14 designed as a drive unit.
- the cooking utensil 101 is arranged on a surface of a worktop 105 of an operating device 106 for operating the cooking utensil 101. Under the worktop 105, a power transmission unit 107 is mounted. This has a housing 108 with an actuating element 109 for switching the energy transfer unit 107 on and off.
- the energy transfer unit 107 comprises an excitation field generating means 11 designed as a primary winding and a current generating unit 12 for supplying the excitation field generating means 11 1 with an alternating current.
- the power generation unit 1 12 is in this embodiment as Inverters formed.
- the excitation field generating means 11 1 designed as a primary winding is wound in the form of a spiral winding.
- the excitation field generating means 11 1 is supplied with the alternating current and generates an excitation field designed as an alternating magnetic field.
- the excitation field generating means 111 transmits, by induction, energy to the energy absorber 114, which is arranged in an energy transfer region 13 drawn on the surface of the work plate 105.
- the energy absorber 114 is formed as a secondary winding, which is wound in the form of a spiral winding.
- the energy transfer area 113 is indicated by means of a line 115 on the work plate 105.
- a secondary voltage is induced by the excitation field flux, which is used as the operating voltage for an operation of the cooking utensil 101.
- the cooking utensil 101 can be removed from the transfer region 1 13, whereby the energy absorber 114 is separated from the excitation field generating means 11 1.
- a control panel in the form of a touch-sensitive screen 104 is further embedded on the display elements and actuators are freely programmable.
- the touch-sensitive screen 104 may be, for example, a liquid crystal or LED screen that is dependent on a touch-sensitive area, e. As an ITO film is covered.
- actuation elements such as push buttons, circular sliders, linear sliders, can be displayed essentially as desired on the control panel, which allows a very flexible user guidance.
- the cooking utensil 101 is equipped with an integrated circuit 116 for processing data and outputting data to a transmitter.
- a temperature sensor (own temperature sensor) 1 17 for determining a natural temperature of the integrated circuit 1 16 is connected to an input of the integrated circuit 116.
- the integrated circuit 16 16 cyclically senses the self-temperature sensor 117, processes the sensed self-temperature signals into a predetermined data and protocol structure, and transmits the self-temperature data thus processed to a transmitter.
- the transmitter has an unmarked modulator and a downstream transmitting antenna.
- the secondary winding 1 14 serves as the transmitting antenna for the power Transmission.
- the data signals radiated by the secondary winding 114 are picked up by the primary winding 11 which also serves as the receiving antenna of the operating device 106, demodulated in a demodulator of the operating device 106, not shown, and forwarded to a control unit 110 of the operating device 106.
- the control unit (“stove electronics") 110 which here comprises a microcontroller, controls the power generation unit 112, among other things by means of the self-temperature data.
- the control unit 110 outputs an audible and visual warning signal which can indicate a critical condition to an operator and cause him to counteract ,
- reaching or exceeding the first self-threshold temperature can be an indication of a low water level ('threatening empty cooking'), whereupon the operator can react, for example, with a refilling of water, a switching down of a power level or a removal of the cooking utensils.
- the control unit 110 causes the electromagnetic excitation field to be reduced by, for example, 25% (“reduction level") in order to prevent overheating and interrupting the cooking process soon.
- the control unit 110 switches off the power generation unit 12 and thus the excitation field in order to damage the integrated circuit (and possibly other temperature-sensitive components ) to prevent.
- FIG. 2 shows a sketch of a simplified control structure of a system comprising an intelligent cooking utensil 201 and an operating device 206.
- the intelligent cooking utensil 201 is designed as a pot, in which cooking product 221 can be filled into a main body 202, which is closed off at the bottom by a pot bottom 220.
- a heating path 222 in the form of an intertwined resistance thick-layer web, which is heated when energized and so warms the pot bottom 220 to heat the food 221 runs.
- the heating track 222 is connected to a Energyaufillon 214 in the form of a spiral-shaped secondary winding and represents their load. From the Energyaufillon 214 and an electrical power to supply a pot electronics 223 is branched off.
- the pot electronics 223 has a switching regulator 224, which converts the output power voltage output by the energy receiver 214 into a low-voltage direct voltage.
- a switching regulator 224 which converts the output power voltage output by the energy receiver 214 into a low-voltage direct voltage.
- the remaining parts of the pot electronics 223 are operated, of which an analog measuring electronics 225, an integrated circuit 216 and a modulator 226 are shown here.
- the analog measuring electronics 225 measuring signals of various sensors of the cooking utensil 201 are sensed and digitized. For ease of illustration here are only three attached to the bottom of the pot bottom 220 temperature sensors
- a self-temperature sensor 217 is present directly at a measuring input of the analog measuring electronics 225. This therefore measures the temperature in the area of this measuring input of the analog measuring electronics 225; Since the well electronics 223 are relatively compactly housed on a common board (not shown), the temperature at that measurement input is also considered to be representative of the temperature at the integrated circuit 216.
- the analog measuring electronics 225 are connected on the output side to an input side of the integrated circuit 216, so that temperature data from the analog measuring electronics 225 are forwarded to the integrated circuit 216 for subsequent processing.
- the integrated circuit 216 has an A / D converter (not shown).
- the digital "raw data" supplied by the analog measuring electronics 225 are reformatted into a format compatible for communication with the operating device 206.
- raw data is converted to a predetermined data format and protocol format.
- the formatted measurement data is then cycled by integrated circuit 216, e.g. B. every 10 ms, forwarded to the modulator 226, where they are modulated onto a carrier signal to then from the modulator 226 via an antenna
- the antenna 228 to be communicated to the operating device 206.
- the antenna 228 is designed here as a parallel to the pot bottom 220 extending signal winding.
- other measurement data can also be processed by the integrated circuit 216 and forwarded to the modulator 226, such as a secondary-side power voltage measurement signal.
- other data may be processed by the integrated circuit 216 and passed to the modulator 226, such as identification data (ID code, etc.) and device status data, cyclically or, in the case of bidirectional communication, on polling.
- the operating device 206 has a receiving antenna 229, which is likewise designed as a signal winding, which is substantially opposite to the signal winding of the transmitting antenna 228 of the cooking utensil 201.
- the receive antenna 229 receives the modulated carrier signal radiated from the transmit antenna 228 and passes it to a demodulator 230 in which the carrier signal modulated data and output again as readable digital data.
- a control unit (“hearth electronics") 210 and evaluated for the operation of the cooking utensil 201.
- the temperature data emitted by the cooking utensil 201 can be in the form of resistance values of the temperature sensors used, if they are designed as resistance temperature sensors. From this, the actual temperature at the underside of the pot bottom 220 can be determined in the control unit 210 by means of a look-up of the corresponding resistance / temperature characteristics in a look-up table, and the temperature of the cooking product can be deduced therefrom. For example, the temperature at the bottom of the pot bottom 220 can be equated with the temperature of the cooking product, or an empirically determined temperature difference can be added, which may also depend on the height of the measured temperature.
- the control unit 210 also receives inputs from a control panel 204, for example, about a desired cooking temperature for a temperature control. For this purpose, an operator has previously set the desired cooking temperature on the control panel 204 directly or via a cooking program. From the control panel 204 - unnoticed by the operator - also other control variables such as PID coefficients are sent to the control unit. In the control unit 210, in the case of a temperature control, a control deviation between desired cooking temperature and actual cooking temperature can be determined, as well as a manipulated variable of the control loop, from which in turn a control voltage for controlling a power generating unit 212 in the form of power electronics is calculated and output.
- the control voltage is here in a range between 0 V (switched off) and 4 V (maximum).
- a digital / analog converter 231 is inserted between the control unit 210 and the power generation unit 212.
- an excitation field generating means 211 is operated in the form of a spiral-shaped power winding, as has already been explained with regard to FIG.
- the power generation unit 212 generates an alternating power voltage applied to the excitation field generating means 211, here for example between 10 VAC and 230 VAC at a frequency between 400 kHz and 100 kHz.
- the excitation field generating means 21 1 generates as an excitation field a magnetic alternating field, which in turn is picked up by the energy receiver 214. In other words, an induction-based energy transfer results between the excitation field generating means 21 1 and the energy absorber 214.
- the control unit 210 further compares the transmitted value of the self-temperature with at least one Eigentemperaturschwellwert, as described in more detail above. Depending on whether one of the self-temperature threshold values has been reached or exceeded and, if appropriate, which of several self-temperature threshold values has been reached or exceeded, a warning can be output or the excitation field generated by the excitation field generating means 21 1 can be targeted by a reduction of a control voltage to the current generation unit 212 weakened and in extreme cases even switched off.
- the cooking utensil 201 is placed on the operating device 206, for example on the worktop 105 shown in FIG. 1, energy can be transmitted from the operating device 206 to the cooking utensil 201 and data signals from the cooking utensil 201 to the operating device 206.
- the energy transfer is possible only in a near field of the excitation field generating means 211 for operating the cooking utensil 201.
- Typical maximum distances between operating device 206 and cooking utensil 201 are 3 to 10 cm.
- the transmitted power is no longer sufficient for the operation of the cooking utensil 201. Then the transmitted energy is no longer sufficient for the operation of the pot electronics, which then stops their operation.
- the cooking utensil 201 When the cooking utensil 201 approaches an operating device 206, it can again enter the near field of the excitation field generating means 211 and thus be supplied with energy again. In this case, the top electronics 223 again sends out signals which are recognized by the operating device 206.
- An appliance operable by the operating device is not limited to a cooking utensil, but may include any other electrically operable food preparation device, such as a household small appliance.
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Cookers (AREA)
- Induction Heating Cooking Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008054911A DE102008054911A1 (de) | 2008-12-18 | 2008-12-18 | Intelligentes Lebensmittelzubereitungsgerät |
| PCT/EP2009/065743 WO2010069720A1 (de) | 2008-12-18 | 2009-11-24 | Intelligentes lebensmittelzubereitungsgerät |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP2380393A1 true EP2380393A1 (de) | 2011-10-26 |
| EP2380393B1 EP2380393B1 (de) | 2020-03-04 |
| EP2380393B2 EP2380393B2 (de) | 2022-12-07 |
Family
ID=41527753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP09764484.3A Active EP2380393B2 (de) | 2008-12-18 | 2009-11-24 | Intelligentes lebensmittelzubereitungsgerät |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2380393B2 (de) |
| DE (1) | DE102008054911A1 (de) |
| WO (1) | WO2010069720A1 (de) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010031761A1 (de) * | 2010-07-15 | 2012-01-19 | Ljubisa Ilić | Herd-Topf-Kombination |
| JPWO2013038695A1 (ja) * | 2011-09-14 | 2015-03-23 | パナソニックIpマネジメント株式会社 | 非接触受電装置および非接触電力伝送装置 |
| DE102011088918A1 (de) * | 2011-12-16 | 2013-06-20 | E.G.O. Elektro-Gerätebau GmbH | Verfahren zum Übertragen von Daten, Induktionsheizvorrichtung, induktiv beheizbares Kochgefäß und System |
| DE102014009710B4 (de) * | 2014-07-02 | 2018-05-09 | Dräger Safety AG & Co. KGaA | Verfahren zur Fehlererkennung in einem Messsystem |
| DE102015222797A1 (de) | 2015-11-18 | 2017-05-18 | BSH Hausgeräte GmbH | System mit Kochgerät und Kochgeschirr |
| US12329313B2 (en) * | 2017-12-29 | 2025-06-17 | Breton Spa | Countertop with induction hob |
| DE102018124319A1 (de) * | 2018-10-02 | 2020-04-02 | Miele & Cie. Kg | Verfahren und Vorrichtung zum Betreiben eines Kochfelds, Kochgeschirr und Kochfeld |
| DE102019114805A1 (de) * | 2019-06-03 | 2020-12-03 | Miele & Cie. Kg | System, umfassend ein Aufstellgerät und eine Aufstellbasis, und Verfahren zum Betrieb des Systems |
| DE102019119731A1 (de) * | 2019-07-22 | 2021-01-28 | Miele & Cie. Kg | Induktionskochgeschirr für ein Induktionskochsystem mit einem Temperatursensor, Induktionskochsystem und Verfahren zum Betrieb des Induktionskochsystems |
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| JPH08315975A (ja) † | 1995-05-18 | 1996-11-29 | Matsushita Electric Ind Co Ltd | 誘導加熱調理器 |
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| ES2284317B1 (es) | 2005-03-31 | 2008-07-16 | Bsh Electrodomesticos España, S.A. | Aparato de calentamiento por induccion. |
| DE102005023468B4 (de) | 2005-05-20 | 2009-08-20 | Electrolux Home Products Corporation N.V. | Gargerät |
| US7355150B2 (en) † | 2006-03-23 | 2008-04-08 | Access Business Group International Llc | Food preparation system with inductive power |
| DE102006017800A1 (de) | 2006-04-18 | 2007-11-15 | BSH Bosch und Siemens Hausgeräte GmbH | Energieübertragungseinheit |
| DE102006022283A1 (de) † | 2006-05-11 | 2007-11-15 | Micronas Gmbh | Monolithische Sensoranordnung bzw. Verfahren zum Ansteuern einer monolithischen Sensoranordnung |
| CN200977058Y (zh) * | 2006-11-25 | 2007-11-21 | 浙江苏泊尔家电制造有限公司 | 感应测温锅具 |
-
2008
- 2008-12-18 DE DE102008054911A patent/DE102008054911A1/de not_active Withdrawn
-
2009
- 2009-11-24 EP EP09764484.3A patent/EP2380393B2/de active Active
- 2009-11-24 WO PCT/EP2009/065743 patent/WO2010069720A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2010069720A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2380393B2 (de) | 2022-12-07 |
| DE102008054911A1 (de) | 2010-06-24 |
| EP2380393B1 (de) | 2020-03-04 |
| WO2010069720A1 (de) | 2010-06-24 |
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