EP3527893A1 - Plaque de cuisson et procédé de fonctionnement d'une plaque de cuisson - Google Patents

Plaque de cuisson et procédé de fonctionnement d'une plaque de cuisson Download PDF

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Publication number
EP3527893A1
EP3527893A1 EP19150479.4A EP19150479A EP3527893A1 EP 3527893 A1 EP3527893 A1 EP 3527893A1 EP 19150479 A EP19150479 A EP 19150479A EP 3527893 A1 EP3527893 A1 EP 3527893A1
Authority
EP
European Patent Office
Prior art keywords
monitoring device
hob
housing
cooking
drive
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
Application number
EP19150479.4A
Other languages
German (de)
English (en)
Other versions
EP3527893B1 (fr
Inventor
Mathias Bellm
Uwe Schaumann
Christian Seidler
Wolfgang Thimm
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EGO Elektro Geratebau GmbH
Original Assignee
EGO Elektro Geratebau GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by EGO Elektro Geratebau GmbH filed Critical EGO Elektro Geratebau GmbH
Publication of EP3527893A1 publication Critical patent/EP3527893A1/fr
Application granted granted Critical
Publication of EP3527893B1 publication Critical patent/EP3527893B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/08—Arrangement or mounting of control or safety devices
    • F24C7/082—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination
    • F24C7/083—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination on tops, hot plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/10—Tops, e.g. hot plates; Rings
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/06—Control, e.g. of temperature, of power
    • H05B6/062—Control, e.g. of temperature, of power for cooking plates or the like
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/12—Cooking devices
    • H05B6/1209—Cooking devices induction cooking plates or the like and devices to be used in combination with them

Definitions

  • the invention relates to a hob with a hob surface, at least one heating device underneath and a hob control. Furthermore, the invention relates to a method for operating such a hob.
  • the invention has for its object to provide an aforementioned hob and a method for its operation, with which problems of the prior art can be solved and it is particularly possible to detect set up on the hob cooking utensils to be able to determine their position and / or properties of these cooking vessels such as temperature or the like. to be able to recognize.
  • the hob has a flat cooking surface, usually designed as a hob plate.
  • At least one heating device is arranged below the hob surface, advantageously a plurality of heating devices or a multiplicity of heating devices, so that either discrete and separate cooking zones are formed or substantially any surface areas of the hob surface are activated by activating them accordingly arranged heaters can be used as a cooking place, which is adapted to the size of an attached cooking vessel.
  • a hob control of the hob is provided, which is advantageously arranged below the hob surface. It may be connected to an operating device of the hob or have this, which is advantageously arranged at least partially below the hob surface.
  • At least one freely movable and self-propelled monitoring device is provided on the hob or the hob has such a monitoring device.
  • This monitoring device is not firmly connected to the cooking surface but it is removable or can be removed, for example for cleaning, repair or other purposes. She will not even with arms or the like. forced, but just drives itself and can therefore be self-sufficient and independent.
  • the monitoring device has its own energy storage and is designed to move freely on the hob surface. So, in principle, it can drive to any point on the hob surface, as long as there is enough space for it.
  • the monitoring device has sensor means to detect a cooking vessel positioned on the cooking surface and / or its temperature and / or its size. This may be a single sensor means, alternatively, several different types of sensor means may be provided. It is also possible to provide further sensor means for further functions, as will be explained in detail below.
  • the sensor means may be designed differently and be passive or active, as will also be explained below.
  • the monitoring device has a communication device in order to be able to communicate with an operator and / or the cooktop control in order in each case to be able to transmit information in at least one direction, advantageously bidirectionally.
  • At least the hob control then also has a corresponding communication device, advantageously both have a radio device.
  • This can work according to a known radio standard, for example via Bluetooth or BLE.
  • this wireless standard can then also very well be a transmission of information to a mobile terminal of an operator or even so that a bidirectional communication.
  • information from the monitoring device may also be transmitted to this mobile device.
  • the monitoring device has at least one position sensor in order to determine a position and / or a position change of the monitoring device on the hob surface.
  • the monitoring device itself knows where it is located on the hob area and can either transmit this information directly to the hob control or evaluate and use for further operations.
  • the cooktop control can interrogate the position sensor of the monitoring device in order to directly detect where the monitoring device is located.
  • a localization of a cooking vessel can take place and an assignment of information of the monitoring device to individual detected cooking vessels can take place on the hob surface.
  • the monitoring device also has a drive device which is designed so that the monitoring device is just self-propelled. Details of such a possible drive device will also be explained below, as in the context of the invention possibilities have been worked out as to how such a monitoring device can move as advantageously as possible on the hob surface. In principle, however, it is important for the drive device that it is arranged on or in the monitoring device itself and is thus movable with it, in order to ensure that the monitoring device can move as freely as possible on the hob surface and thus any approachable point that is accessible, can start.
  • a possibility can be created to identify cooking vessels on the hob surface or to detect whether ever at least one cooking vessel on the hob surface is present and, if so, how many and where.
  • basic inherent properties of the cooking vessel can be grasped, such as a type, size, material or specific identity, as well as operational characteristics such as temperature or the like.
  • numerous other uses for a freely movable on the hob surface monitoring device which will be explained in detail below.
  • the monitoring device and the drive device thereof are designed so that the monitoring device can move in any direction on the hob surface. So she can fulfill her task of finding a cooking vessel as well as possible. In addition, routes can be optimized or shortened.
  • the sensor means may be movably arranged on the monitoring device such that their height above the hob surface and / or an angular orientation of an effective direction of the sensor means to the plane of the hob surface can be changed. So it is possible that deviating from the technology of the aforementioned EP 845 922 A2 not only at a fixed, usually low height, a cooking vessel or, for example, a temperature of a cooking vessel can be detected. If the height comes to be variable in the vertical direction, a sensor means can additionally detect even a height of the cooking vessel and thus its size and thus also an important individualizing property.
  • the sensor means can be moved in height by a traversing device, so that the sensor means can be moved, for example, between 1 cm height above the cooking surface and 10 cm to 20 cm in height. Thereby, the height may be measured during the procedure, either at intervals or substantially permanently.
  • a sensor means may be consistent in height over the hob surface or not be variable in height, however, its angular orientation or its direction of action can be changed to the plane of the hob surface, however.
  • a rotation or pivoting of the sensor means itself is suitable, for example by a corresponding rotatable or pivotable mounting.
  • the direction of action of the sensor means can be rotated or pivoted, for example by deflection with a mirror or the like.
  • a change in the angular orientation or effective direction can not be changed only in the vertical direction, but also in a horizontal direction. But this can also be replaced by the fact that the monitoring device rotates by means of the drive means so to speak on the spot, which has the same effect.
  • the sensor means may be formed so that they have an optical sensor.
  • This can advantageously be a photosensor or a CCD chip for visible and / or invisible light, which then offers IR light here.
  • a reflection light barrier can be provided, with which one can recognize in a known manner the presence of a cooking vessel and also its position or at least its distance to it.
  • Such a reflection light barrier should have a corresponding light transmitter in the monitoring device, for example as IR light emitter or IR LED.
  • the optical sensor then forms the light receiver for the reflection light barrier. A removal of the sensor means and thus the monitoring device to a reflective surface of a cooking vessel, in particular a side wall, can then be advantageously detected by transit time measurement.
  • a radar sensor can also be used in addition to or as an alternative to optical sensors. These are now relatively small and can be easily installed in such a movable monitoring device, for example, in an external attachment module of the monitoring device.
  • ultrasound can be used with an ultrasonic transmitter and a Ultrasonic receiver. Ultrasound can also be directed in many ways, such as light, such as mirrors.
  • a sensor means of the monitoring device is arranged at a height of at least 4 cm above the cooking surface area or can be arranged. This is a height that a conventional cooking vessel mounted on a cooking surface has at least. Thus, the sensor means can definitely detect an erected cooking vessel.
  • the position sensor of the monitoring device can be designed to detect its orientation or rotational position in addition to determining a position and / or a change in position of the monitoring device. So cooking vessels can be accurately recognized or recorded their position because, so to speak, the sensor direction is known.
  • the or a position sensor cooperates with so-called determining means which are provided on the hob or under the hob surface.
  • These determination means should help, if possible in cooperation with the position sensor, to determine the position of the monitoring device on the hob surface, so that this position sensor may possibly be simpler and / or able to operate more accurately.
  • the determination means can be actively configured, then they can be, for example, a transmitter in the manner of a direction finder. This transmitter can have a transmission source, advantageously punctiform, which transmits a signal. If at least two of these transmitters are provided on the hob, in particular in corner regions of a lateral side of the hob surface, the exact position of the monitoring device on the hob surface can be detected by simply determining the distance to these two transmitters or transmission sources.
  • the determination means can be passive, so that they can have, for example, optically or mechanically recognizable markings on the hob surface.
  • optical Markings are already often provided on hob surfaces and can be detected with appropriate sensors.
  • Mechanically recognizable markings can be, for example, a slightly raised or upwardly directed edge of the hob.
  • the position sensor may then comprise detection means to detect these marks.
  • the detection means can either be optical, for example again with a CCD chip or sensors for pattern or image recognition, or operate mechanically, for example as switches or force sensors.
  • Another possibility is magnetically detectable markings in the form of magnets at or below the hob surface, in which case the detection means may be magnetic field sensors.
  • the detection means may be particularly advantageously directed downwards to detect a mark when the monitoring device is located above it. Then the monitoring device automatically and inevitably knows exactly where it is located.
  • such passive determination means may be designed not to determine the position of the monitoring device at each point of the hob surface, but to perform at least one calibration or calibration of the position sensor or a position detection.
  • the position sensors can be made somewhat simpler, since they do not have to have permanently high accuracy.
  • the monitoring device may comprise a motion sensor which is designed such that it detects a movement of the movement device in any direction. In particular, it can also detect a rotation in order to be able to carry out the aforementioned recognition of a rotational position or orientation.
  • a motion sensor can then serve to detect a movement path of the monitoring device when the monitoring device then starts a movement from a fixed known point. Then, when the movement path is detected, the monitoring device knows which position it is at any time. The aforementioned markings can serve to make this position detection more accurate from time to time.
  • a sensor means in the monitoring device may be configured to detect and evaluate a drive power and / or a drive movement of a drive motor of the drive device for the monitoring device. This can then be done alone or in addition to one of the other aforementioned possibilities a position determination. In addition, blocking of movement of the monitoring device by these sensor means may also be enabled. This information may be generally significant, as well It can also be deduced from this that the monitoring device has moved against a cooking vessel and thus can not continue. If then consciously the monitoring device repeatedly moves in the approximate direction, where it has been stopped for the first time, but each time by a piece to the side, so it can be recognized from at least a part of an outline of a cooking vessel.
  • the monitoring device actively shifts the cooking vessel to a position and / or in a direction that has been predetermined by the hob control.
  • the monitor may first detect the exact size and location of the cooking vessel as previously described. Then, if the hob control for the cooking vessel looks at a different or slightly different position than better, for example, shifted by 2 cm to 20 cm, the movable monitoring device can move the cooking vessel accordingly in the better position.
  • the hob control for the cooking vessel looks at a different or slightly different position than better, for example, shifted by 2 cm to 20 cm
  • the movable monitoring device can move the cooking vessel accordingly in the better position.
  • the communication device of the monitoring device advantageously has a transmitting device and a receiving device.
  • information can be sent to the cooktop control and, if necessary, information from the cooktop control can be received, so it is bidirectional.
  • This can also be, for example, information that is to be displayed on the monitoring device for an operator or should be displayed to an operator.
  • This can be information about an operating state of the hob, in particular also about program sequences on the hob, such as automatic cooking programs or the like.
  • the hob control advantageously has a corresponding corresponding communication device. If appropriate, the monitoring device can also communicate with an aforementioned mobile terminal of an operator and send and / or receive information for this purpose.
  • the monitoring device has its own internal energy store. This is advantageously designed as a rechargeable accumulator so that it is self-sufficient in its operation.
  • the monitoring device particularly advantageously has a charging device which is designed for inductive charging.
  • the hob can for this purpose have a built-in below the hob surface induction coil, so that the monitoring device in a known manner and Move way through this induction coil, and then in a known manner, an inductive charging takes place.
  • open contacts or a manually to be performed charging with separate plug or the like. be avoided.
  • the energy storage can be charged with a dedicated electrical contacting device of the hob, as is also known per se, in particular of vacuum cleaner robots or lawn mowing robots.
  • the monitoring device automatically moves to charge the energy store and the charging process begins automatically, for example, when a state of charge of the accumulator has fallen below a certain limit.
  • the monitoring device comprises a chassis or a housing, which is preferably formed substantially closed.
  • drive means may be arranged, which are preferably arranged outside.
  • These drive means carry the monitoring device or with these it is on the hob surface.
  • Drive means may advantageously be formed circumferentially such as wheels, caterpillars or the like.
  • a drive for such drive means is preferably arranged in the chassis or in the housing.
  • Such a monitoring device is then designed substantially like a known vehicle. Steering can either be done by appropriately movable wheels, alternatively can be dispensed with a complex steering mechanism and by different drive the wheels, for example, with different speeds or even different directions on both sides, a non-linear movement or rotation can be effected.
  • the drive means are advantageously designed accordingly, particularly advantageously by means of different drives.
  • For this purpose for example, be provided for each wheel or bead a separate drive, which is then controlled individually for a precisely predetermined movement. This is known per se from the prior art for small autonomous vehicles, in particular robotic vehicles.
  • a propeller or rotor as drive means, in which case the monitoring device is an aircraft. It can be advantageously designed in the manner of a drone. It is very flexible and can fly at different heights as well as determine its size by flying over a cooking vessel.
  • the monitoring device may have a round housing, which in particular is spherical.
  • Drive means are provided within this housing, said drive means by a rotational and / or rolling movement of the housing itself relative to the cooking surface and on the hob surface resting Move monitoring device.
  • the drive means may preferably be circumferential or rotate and rest against an inner surface of the housing.
  • the housing of the monitoring device can move itself like a ball or a ball, advantageously in any direction.
  • Such a drive principle is known from the DE 20 2015 002 763 U1 , which are hereby explicitly referred to.
  • the monitoring device in the housing on a main unit on which the essential components of the monitoring device such as a drive or drive motors, control, sensor means and energy storage are arranged.
  • a center of gravity of this main unit is preferably lower than a geometric center of the housing, in particular if this is spherical.
  • the drive means may comprise lower drive wheels in a lower region of the main unit and upper drive wheels in an upper region, these drive wheels each resting against an inner surface of the housing at the top and bottom. At least on one side, the drive wheels are driven, advantageously below.
  • the ball-shaped housing is then, as it were, mounted like a shell firmly on the drive means of the main unit.
  • the main unit remains substantially aligned by the low center of gravity with respect to a vertical axis, and a relative movement between the main unit and housing results in a rotation of the housing so that it rolls like a ball on the cooking surface.
  • this rolling motion is effected and controlled by the main unit, also with respect to a possible direction.
  • the upper drive wheels can also be dispensed with in a simple embodiment of the invention. In this case, however, should be provided an upper support against the inner surface of the housing in the manner of a follower wheel or the like., At least without much friction against the inner surface.
  • the main unit is fixed and stable stored in the housing, whereby the friction between the necessary lower drive wheels and the inner surface of the housing can be increased to a sufficient degree.
  • such a monitoring device can be provided on the outside of the housing, preferably in an area above a horizontal plane in which a geometric center of the housing, a kind of attachment module.
  • This attachment module can be attached from the outside to the housing and rest against it, wherein it is held by magnetic force non-positively on the housing. Furthermore, it is held relative to the main unit in the housing in as constant a position as possible with only a small positional deviation.
  • the attachment module magnetic means for corresponding counter-magnetite in the main unit.
  • the distance between the two magnetic media should be as low as possible for the largest possible magnetic force between the two.
  • the attachment module should rest with the least possible friction on the outside of the housing and can have either circumferential rollers or wheels or balls.
  • the attachment module may sliding surfaces, sliding protrusions or the like. have the least possible friction with the outside of the housing, for example consisting of PTFE.
  • Such an attachment module can be used to accommodate at least one sensor means of the monitoring device.
  • the advantage of this attachment module is namely that it is actually arranged in always the same position on the housing, for example on its upper side or maximum height.
  • the sensor means may also have, so to speak, free visual path and optionally look in all directions during rotation. It is of course also possible that a direction of action of a sensor means in this attachment module is determined by a movement of the monitoring device or the housing itself.
  • the attachment module may comprise a wireless communication device for communicating with communication means of the main unit and / or with the communication device of the cooktop controller itself. Likewise, it can of course communicate with a communication device of an aforementioned mobile terminal of an operator. Under certain circumstances, it may even be provided that said main unit within the housing is only responsible for a corresponding movement of the monitoring device, if necessary also for a purposeful movement, or a position detection of the monitoring device can be taken over by the main unit. A sensory monitoring of processes on the hob surface or cooking vessels on the hob surface is then taken over by the attachment module, which works as it were self-sufficient within the movable monitoring device itself.
  • a power supply of the attachment module or of functional units within the attachment module is carried out either by its own built-in energy source, which in turn is of course advantageous rechargeable.
  • a contactless inductive energy transfer may be provided with appropriate inductive energy transfer means possible in the lower region of the attachment module and possibly in the region within the housing to which the attachment module is held by magnetic force.
  • a sensor means is designed for temperature detection, as has been previously mentioned and is basically known from the prior art.
  • a temperature of the cooktop surface itself can also be detected, for example for a known hot display of the cooktop.
  • Such a sensor means for temperature detection should therefore have an effective direction at least partially to the side. This can either be in the horizontal direction to the side or inclined at an angle upwards or downwards. Particularly advantageous can just as explained above, the sensor means itself or its direction of action are pivoted between upward and downward.
  • a detection of an individual cooking vessel is possible.
  • this may for example have an RFID transponder, advantageously robust and practical mounted on the cooking vessel for a practical use of the cooking vessel.
  • the monitoring device can then have a corresponding RFID reader. If the monitoring device, as has also been explained above, is very close to a cooking vessel or abuts such a cooking vessel, in particular close or even as close as possible to the RFID transponder, then it can be ensured that the read-out RFID identifier actually too heard the cooking vessel at this point.
  • This individual recognition can be advantageous, for example, with special cooking vessels, which must not be confused with other cooking vessels during operation, for example because they are more sensitive or have to be operated differently.
  • a further development of the invention can provide that cooking vessel classes or cooking vessel types can be recognized and, above all, distinguished. This can be recognized for example by a special outer material of a cooking vessel. So cooking vessel made of stainless steel, cast iron, enamelled cooking vessels or even, if they can be operated on the appropriate heating, stoneware pots and glass pots are recognized. Such recognition of an outer material of a cooking vessel is advantageously carried out via a spectrometer, which is provided on or in the monitoring device. Such a spectrometer may be arranged similar to the aforementioned optical sensor and also operated similarly. This is known per se for spectrometers and for the person skilled in the art easy to implement here with a hob. Modern spectrometers are also relatively small and can be easily operated.
  • the distance between the spectrometer and a surface to be examined, namely that of the cooking vessel, is relatively small. This makes the measurement predictably more accurate. Furthermore, disturbances or possible disturbances can be avoided as another significant advantage.
  • the hob can have a plurality of identical monitoring devices on its hob surface.
  • these monitoring devices are identically formed, whereby a production is easier.
  • These monitoring devices can communicate with their communication devices with the hob control and / or with each other. Direct communication of the monitoring devices with one another has the advantage that it is thus possible for the monitoring devices to organize themselves and work together, so to speak.
  • the hob area may in principle be possible for the hob area to be divided into partial areas, with one or exactly one monitoring device being provided in principle for each partial area.
  • this fixed division can be changed, either by the cooktop controller or by the group of monitoring devices themselves, for example, if a cooking vessel is set up on the cooktop surface in such a way that it covers two partial areas significantly.
  • the monitoring devices in each of the subregions must make a measurement so that the result of the determination becomes more accurate.
  • either the two monitoring devices that are responsible for the two subareas can cooperate here.
  • a monitoring device can take over the main task, so that the other monitoring devices are left behind here.
  • the monitoring device triggered automatically or by an operator, scans the hob area for an installed cooking vessel or for other processes or states that are relevant.
  • the monitoring device can automatically drive to the hob surface after a start command.
  • a first rough examination by the monitoring device is started as to whether any cooking vessels are present on the hob surface. From then on can be detected by an ongoing monitoring, which can be triggered for example by events such as setting a power level for a cooking surface on the cooking surface or the beginning of an actual operation of a heater under the hob surface, what happens on the hob area or if you have Cooking vessels are placed.
  • Another example of a possible advantageous cooperation of several monitoring devices would be if it is prevented by erected cooking vessels or hot areas of the hob surface that a monitoring device comes to a specific area where they should and should measure something. Then, this task can be given to another free monitoring device, which would have to be able to get into this area, at least because of the detectable circumstances. If this monitoring device does not succeed in a practical attempt, it can, if another monitoring device is present, they are tasked with it.
  • Such a distribution of tasks among a plurality of monitoring devices can also be influenced by the fact that not every monitoring device must be able to perform or perform each task, but specialization is possible. For example, provision may also be made for a monitoring device provided in the front area or for the front area to provide information to an operator, simply because it is closer to this operator or can also be seen better. Information can be displayed optically and / or acoustically. There are new options for both display options, since their origin has been pulled out of the hob, so to speak, or has been brought up from under the hob surface. Thus, the hob surface, for example, if it is a common hob plate made of glass ceramic, no longer disturbing or can no longer distort this information display.
  • Operating elements on the monitoring device for an operator can advantageously be formed capacitively or be designed as touch sensors.
  • Such controls can also be advantageously provided on an aforementioned attachment module, since this is indeed on top of the housing and thus well visible and easily accessible for an operator.
  • a display can be provided for general information or for those that relate specifically to the monitoring device.
  • Such a display may generally also cause projection onto a surface with a small projector, preferably an LED projector.
  • a surface may be on the hob surface or a surrounding worktop, alternatively a vertical surface on a wall behind the hob.
  • a microphone may be provided on the monitoring device, preferably at an aforementioned attachment module. Then the microphone can be moved close to an operator, whereby speech recognition is particularly well possible.
  • an inventive hob 11 is simplified from the side and shown schematically.
  • the hob 11 has a conventional hob plate 12, advantageously made of glass ceramic, under which in a heating area, not shown, two induction heating coils 17a and 17b are arranged. In practice, this can be more, possibly even with a much smaller distance from each other.
  • an operating device 18 is provided, as it is known per se from the prior art and in the plan view of Fig. 6 something is easier to recognize.
  • the induction heating coils 17 a and 17 b and the operating device 18 are connected to a hob control 20.
  • This hob control 20 has, on the one hand, a so-called intelligence for the hob 11, in particular with at least one controller.
  • the hob control unit 20 here also has a power supply for the induction heating coils 17.
  • the cooktop control 20 is connected to the radio device 22, which can operate according to any standard, in particular according to WLAN standard or Bluetooth or BLE standard.
  • the radio device 22 may also be formed, for example, in a structural unit with the hob control 20, advantageously on a same circuit board.
  • radio transmitters 24a and 24b are provided under the hob plate 12, advantageously attached to the underside thereof.
  • these radio transmitters 24a and 24b may be arranged at any point below the cooktop plate 12 and serve to determine the position. They are particularly preferred according to Fig. 6 arranged in the back two corners. Thus, a clear position determination by distance measurement is easily possible with them.
  • a cooking vessel 26 is placed above the right induction heating coil 17b, here a filled with water pot. It is now about either already the placement of the cooking vessel 26 to recognize or its exact location, possibly also its temperature.
  • the monitoring device 30 is left in Fig. 1 intended.
  • the monitoring device 30 is shown here as a kind of car or vehicle with a housing 32 and four wheels 33 thereon.
  • the number of wheels 33 may also vary slightly, in particular, there may be only three wheels for better steering.
  • the wheels 33 are driven by means not shown drive motors and, in the absence of steering by adjustable drive wheels, can be driven with different drive powers and even drive directions that the monitoring device 30 can be controlled as a vehicle back and forth and in curves as desired.
  • a controller 36 of the monitoring device 30 advantageously has a controller and is connected to an energy store 38 for the monitoring device 30.
  • This is advantageously a rechargeable accumulator, which can be charged via a arranged on the bottom of the housing 32 charging coil 39.
  • a special charging coil can be provided under the hob plate 12 or in another base station.
  • the left induction heating coil 17a serve this purpose by appropriate design and control.
  • the monitoring device 30 or its energy storage 38 can be charged inductively at the appropriate time by stopping over an induction heating coil.
  • the monitoring device 30 also has a radio module 40 connected to the controller 36. This can on the one hand, as explained above, communicate with the radio device 22 of the hob control 20 in the manner described above. Furthermore, the radio module 40 can also serve to communicate with a mobile terminal in the form of a tablet computer 65 shown here by means of its radio device 66, in particular just via Bluetooth. Thus, information from the monitoring device 30 can also be given to the tablet computer 65 so that an operator can display this information. Alternatively, it is also possible to influence the monitoring device 30 via this tablet computer 65, for example an at least partial reprogramming.
  • the attachment 42 on the housing 32 of the monitoring device 30 is here in Fig. 1 rotatably formed. It can be fixed in height, so that arranged sensor means act only at a certain height, but in any direction, so practically in one plane. If this level is at a height of several centimeters above the hob plate 12, then this may be sufficient to detect any cooking vessels such as the cooking vessel 26.
  • Such a configuration of the attachment 42 is in Fig. 2 shown.
  • a light transmitter 43 is provided on the side with light rays 46 shown in dashed lines, which extend approximately in a horizontal plane. Reflected light rays 46 are incident on the light receiver 44 arranged underneath.
  • an optical system 45 can be provided in a manner known per se.
  • a reflection light barrier explained in the introduction can be constructed in order to detect the presence of a cooking vessel on the hob plate 12 and possibly also the distance to it. This can easily be done via a transit time measurement, as is known for retro-reflective sensors. An evaluation can be made in the controller 36 of the monitoring device 30.
  • the controller 36 may also perform position determination on the cooktop panel 12 by means of the radio module 40 and the two radio transmitters 24a and 24b, respectively, by determining the distance to these radio transmitters 24a and 24b. This is not very difficult technically.
  • the radio transmitters 24 in, for example, the two rear corner areas according to Fig. 6 have been set, the position of the monitoring device is easily and uniquely determined from the distance of the monitoring device 30 to these two radio transmitters 24.
  • the two rear corner areas are very well suited for this.
  • a motion sensor explained at the outset may also be contained in the control 36, which in itself detects any movement and can determine a movement path therefrom. It can also be an orientation of the direction of rotation of the monitoring device 30, so that it always knows in which direction it is aligned. This is important for the orientation of the sensor means. For this purpose, only their orientation to the monitoring device 30 itself or to its housing 32 must be known.
  • a more elaborate essay 142 is shown for the monitoring device.
  • a light emitter 143 and a light receiver 144 do not point directly in the direction in which an expected cooking vessel is placed, but upward.
  • a MEMS mirror 145 is arranged as a type of optics for the light beams 146, with which they can be easily deflected vertically and advantageously also horizontally in a certain angular range.
  • Such a use of such a MEMS mirror is for a similar purpose from the European patent application with the application number EP 17168739.5 with the filing date of April 28, 2017, the same applicant, to which expressly incorporated herein by reference.
  • a deflection or control of the light beams 146 can be achieved relatively easily in not completely arbitrary direction, but in a varying direction with sufficient practicality.
  • only one light receiver 44 may be provided as a sensor means, which is an IR sensor. So can, as from the aforementioned EP 845 922 A2 is known, a temperature of a cooking vessel 26 are detected by the heat radiation to an outside. Such a temperature measurement has been explained at the outset yes. Yet another alternative is the use of ultrasound with an ultrasound transmitter and an ultrasound receiver. This is also possible in combination with a named MEMS system. In a similar form, an aforementioned spectrometer could also be arranged on a monitoring device.
  • Fig. 2 also easy to imagine that this can be rotated about a vertical axis of rotation.
  • a standstill monitoring device 30 regardless of their orientation, a certain surface area can either be searched for a cooking vessel at all, or a recognized and known cooking vessel can be detected in its temperature.
  • a rotation axis vertically, but obliquely to the vertical axis.
  • both the lateral direction and the height direction of detection of the sensor means can be varied. If the orientation of the monitoring device 30 is variable and at the same time known, a large area with sensor means can thus also be monitored.
  • FIG. 4 is a simple design for a monitoring device 230 to see in partial view, in which case an attachment 242 is height adjustable in the housing 232. At a Side of the attachment 242 is namely an elongated toothed rail 248 attached, which can be adjusted by means of a driven gear 249 in height. So sensor means or light emitter and light receiver behind the optics 245 shown here can be easily adjusted in height. Such a vertical method of the sensor means is known from the above EP 845 922 A2 basically known.
  • a further advantageous embodiment of a monitoring device 330 is shown for a hob, the housing 332 is spherical.
  • the structural design is also on the aforementioned DE 20 2015 002 763 U1 pointed.
  • the spherical monitoring device 330 lies directly on top of the hob plate 312 of the hob 311.
  • a main unit 331 is arranged, on which essential parts of the monitoring device 330 are arranged.
  • friction wheels 335 are provided, preferably rubberized on the outside, so that they rest well on an inner surface of the ball-shaped housing 332 and preferably have no slippage.
  • an arm 351 a projects upwards, at the upper end of which a non-driven sliding wheel 352 is arranged, which rests against the inner surface of the housing 332. This concern may be somewhat yielding, which in any case ensures that the friction wheels 335 a and 335 b are pressed against the inner surface of the housing 332.
  • the friction wheels 335a and 335b are driven by a respective drive motor 334a and 334b and can be driven individually.
  • each of these wheels 335 is individually and arbitrarily drivable, but at least arranged on one side, so it is easy to imagine that the main unit 331 can move within the spherical housing 332 in almost any direction and thus the housing 332 itself to roll which causes the entire monitoring device 330 to move.
  • a center of gravity of the main unit 331 not shown here, is arranged significantly lower than a geometric center of the spherical housing 332, so that the main unit 331 essentially always corresponds in its vertical orientation Fig. 5 tried to stay.
  • the main unit 331 has a controller 336 and an energy store 338 including charging coil 339 at the very bottom.
  • the controller 336 is connected to a radio module 340 which has the functions previously described and can communicate with either a cooktop controller or an external device such as the tablet computer according to Fig. 1 ,
  • the monitoring device 330 is also moved via an induction heating coil 317, so that the charging coil 339 can charge the energy storage 338 in a known manner in cooperation with the induction heating coil 317.
  • a separate charging coil may be provided below the hob area elsewhere.
  • a holding magnet 354 is provided which lies just below the inner surface of the housing 332.
  • a transformer 356 is provided, which is connected to the controller 336.
  • an attachment module 342 is placed externally on the housing 332 and abuts against it, wherein it has a plurality of sliding projections 353 on its underside, advantageously of a material which slides very well, such as PTFE. It has a counter magnet 355 in the lower region, which attracts with the holding magnet 354.
  • the attachment module 342 is held on the housing 332 in a manner known from the prior art, even when the monitor 330 is moving or the housing 332 is rotating. It then turns, as it were, between the main unit 331 and the attachment module 342.
  • the lower transmitter 356 is an upper transmitter 357 in the attachment module 342, which is connected to a light transmitter 343 and a light receiver 344. These work by means of the light beams 346 as previously described reflection light barrier.
  • other sensor means for example an IR temperature sensor, a radar sensor or the like.
  • the transformers advantageously operate inductively and can either transmit the respective signals or supply energy to an upper control, not shown here, together with energy storage.
  • Holding magnet 354 and counter magnet 355 are advantageously designed such that not only they remain exactly opposite each other even with rotating housing 332, but also their orientation to each other remains the same.
  • a direction of the light rays 346 may always be parallel to a direction of travel for the main unit 331 or its friction wheels 335.
  • the alignment of these light beams 346 and thus also the orientation of the sensor means in the attachment module 342 is always known for an exact function, in particular one exact temperature measurement and precise position detection for cooking vessels.
  • a second arm 351b of the main unit 331 may be provided a kind of operating device or at least one operating element.
  • the housing 332 does not have to be transparent for this purpose, it is advantageous for it to be so transparent that it allows light to pass through from the inside when transilluminated, that is to say is translucent, as it were.
  • These are at the top of the arm 351b Provided in annular form, optical fibers 359 illuminated by LED 360 connected to the controller 336. This luminous phenomenon can be seen through the housing 332, so that an operator knows through the luminous phenomenon that an operation is possible at this point.
  • a capacitive sensor 362 is provided, which is also connected to the controller 336.
  • the monitoring device 330 can be switched on or off.
  • predefined defined operating commands can be entered by confirming.
  • a plurality of such operating elements may also be provided on the monitoring device 330.
  • Corresponding operating commands as well as the information from the sensor means or the light receiver 344 can transmit the controller 336 by means of the radio module 340 to a controller of the hob.
  • each position information of the monitoring device 330 can be sent, and this information is then processed by the control of the hob to a total image.
  • a monitoring device 330 accordingly Fig. 5 has the advantage that it can be waterproof and thus insensitive to steam and leaking liquid in a cooking process on a hob. It can also be very robust.
  • Further sensor means may be provided on the monitoring device 330, for example also downwardly and forwardly oriented simple optical temperature sensors which operate at a distance of a few cm. Through this, the monitoring device can recognize when there is a risk of driving on a too hot area of the hob plate, in which even a short drive over could cause damage to the monitoring device.
  • a heating area 13 is provided, which is shown in dashed lines.
  • the heating area 13 occupies the largest part of the surface of the hob plate 12, as is known per se.
  • a control device 18 or controls 18 ' may be provided and a large display 19.
  • This display 19 may be simple and by simple points of light, for example, power levels or the like. Show. Alternatively, the positions of detected cooking vessels may be displayed or other information. Fully graphic-capable displays with backlighting can also be used for this purpose.
  • the heating area 13 is subdivided by means of a dotted separation 14 into a rear partial area 15a and a front partial area 15b.
  • the partial areas 15a and 15b are approximately the same size.
  • a first cooking vessel 26a is placed.
  • a cooking vessel 26b is placed, and right almost centered to the separation 14, a cooking vessel 26c is placed.
  • the division of the heating area 13 into two partial areas 15a and 15d serves to provide a separate monitoring device 30a for the rear partial area 15a, and an identical frontal monitoring device 30b for the front partial area 15b.
  • For the monitoring device 30b also possible routes are indicated by dashed lines.
  • each monitoring device 30a and 30b is exclusively responsible for its subarea 15a and 15b. This would mean that the monitoring device 30a in the partial area 15a recognizes the cooking vessel 26a with regard to its exact position and size. With regard to the cooking vessel 26c, it can recognize that at least part of a cooking vessel is in its partial area 15a. At the same time, it can be seen that the cooking vessel 26c is not completely in the partial area 15a.
  • the two monitoring devices 30 have to solve.
  • teaming can be done according to different specifications.
  • the monitoring device 30a is already already at the cooking vessel 26c before the monitoring device 30b has arrived there.
  • the responsibility for the cooking vessel 26c may be transferred to the monitor 30a, both in the position and size of the cooking vessel 26c and, for example, in detecting its temperature.
  • the monitoring device 30b detects the cooking vessel 26a which is close to it and determines its size and position precisely, also with regard to its temperature monitoring. Furthermore, it could then be provided if one of the monitoring devices 30, advantageously the monitoring device 30b, has detected the size and position of the cooking vessel 26b and has given it to a control of the hob 11 that then this controller knows that all of the cooking plate 12 and in the heating area 13 patch cooking vessels 26 are detected. For then possibly desired permanent temperature monitoring of all cooking vessels, the controller could command the monitoring devices 30a and 30b to monitor one of the two, advantageously the monitoring device 30a, the two closer cooking vessels 26b and 26c.
  • the cooking vessel 26a further away can then be monitored by the monitoring device 30b alone, since this, due to its distance from the other two, is not suitable for being permanently monitored together with one of the other two cooking vessels by a single monitoring device.
  • Fig. 1 further functional units.
  • These may be, for example, cleaning agents in the form of a downwardly facing brush. This can be raised and lowered, for example, by motor. With it, the monitoring device by passing a polluted place, for example, by repeatedly driving over, clean the hob plate.
EP19150479.4A 2018-02-14 2019-01-07 Système comprenant une plaque de cuisson et un dispositif de surveillance Active EP3527893B1 (fr)

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DE102018202255.0A DE102018202255B4 (de) 2018-02-14 2018-02-14 Kochfeld und Verfahren zum Betrieb eines Kochfelds

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EP3527893B1 EP3527893B1 (fr) 2020-11-18

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020112582A1 (de) 2020-05-08 2021-11-11 Rational Aktiengesellschaft Gargerät, Baugruppe mit einem solchen Gargerät und einem externen Sensor sowie Verfahren zum Steuern eines Gargeräts einer solchen Baugruppe
DE102020212169B3 (de) 2020-09-28 2022-02-10 E.G.O. Elektro-Gerätebau GmbH Verfahren zur Bestimmung einer Topfposition eines Topfes auf einem Kochfeld und Kochfeld

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0845922A2 (fr) 1996-12-02 1998-06-03 Bosch-Siemens HausgerÀ¤te GmbH Ensemble de cuisson commande par un capteur avec purgeur de condensat dans l'unité fonctionnelle constructif
DE102006023702A1 (de) * 2006-05-19 2007-11-22 BSH Bosch und Siemens Hausgeräte GmbH Hausgerät, vorzugsweise Kochfeld
DE202015002763U1 (de) 2015-04-15 2015-05-26 Orbotix, Inc. Magnetisch gekoppeltes Zubehör für eine selbstangetriebene Vorrichtung
WO2015125017A2 (fr) * 2014-02-20 2015-08-27 Mark Oleynik Procédés et systèmes de préparation des aliments dans une cuisine robotisée

Family Cites Families (4)

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Publication number Priority date Publication date Assignee Title
ES2319031B1 (es) * 2007-02-21 2010-02-03 Bsh Electrodomesticos España, S.A. Campo de coccion con un elemento de calentamiento movible.
DE102010042138A1 (de) * 2010-10-07 2012-04-12 BSH Bosch und Siemens Hausgeräte GmbH Temperaturmesssystem
ES2544503B1 (es) * 2014-02-28 2016-06-09 Bsh Electrodomésticos España, S.A. Procedimiento para la regulación de la temperatura de un campo de cocción
DE102015219906A1 (de) * 2015-10-14 2017-04-20 Robert Bosch Gmbh Sensorvorrichtung zum Eingeben in ein Fluid in einem Kochgeschirr und Verfahren zum Aussenden eines Sensorsignals

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0845922A2 (fr) 1996-12-02 1998-06-03 Bosch-Siemens HausgerÀ¤te GmbH Ensemble de cuisson commande par un capteur avec purgeur de condensat dans l'unité fonctionnelle constructif
DE102006023702A1 (de) * 2006-05-19 2007-11-22 BSH Bosch und Siemens Hausgeräte GmbH Hausgerät, vorzugsweise Kochfeld
WO2015125017A2 (fr) * 2014-02-20 2015-08-27 Mark Oleynik Procédés et systèmes de préparation des aliments dans une cuisine robotisée
DE202015002763U1 (de) 2015-04-15 2015-05-26 Orbotix, Inc. Magnetisch gekoppeltes Zubehör für eine selbstangetriebene Vorrichtung

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EP3527893B1 (fr) 2020-11-18
DE102018202255B4 (de) 2022-02-10

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