EP1379105A2 - Sensor zur Kochgefässerkennung - Google Patents
Sensor zur Kochgefässerkennung Download PDFInfo
- Publication number
- EP1379105A2 EP1379105A2 EP03022466A EP03022466A EP1379105A2 EP 1379105 A2 EP1379105 A2 EP 1379105A2 EP 03022466 A EP03022466 A EP 03022466A EP 03022466 A EP03022466 A EP 03022466A EP 1379105 A2 EP1379105 A2 EP 1379105A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- sensor
- loop
- sensor loop
- heating zone
- heating
- 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.)
- Withdrawn
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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
- H05B3/00—Ohmic-resistance heating
- H05B3/68—Heating arrangements specially adapted for cooking plates or analogous hot-plates
- H05B3/74—Non-metallic plates, e.g. vitroceramic, ceramic or glassceramic hobs, also including power or control circuits
- H05B3/746—Protection, e.g. overheat cutoff, hot plate indicator
-
- 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
- H05B2213/05—Heating plates with pan detection means
Definitions
- the invention relates to a sensor for an electric radiant heater to detect the positioning of a cooking vessel on a the hotplate covering the radiator, in particular a glass ceramic plate.
- the single-winded pot detection loop mentioned is from DE 37 11 589 Al became known. It is a passive short circuit loop, between the heating elements and a glass ceramic plate is arranged. It is from one below the heating elements arranged magnetic field transmitter externally acted upon. By periodic Short circuit and a corresponding damping measurement will Evaluation circuit acted upon. The introduction of such a system in practice fails because of the great effort and above all the necessary large height to accommodate the magnetic field encoder.
- the mentioned multi-wind coils in the outer edge area cause thermal problems and are, as per the invention was recognized and as will be explained later, less suitable with regard to sharp signal generation and detection.
- EP 0 469 189 A describes a control method for the heating elements a stove with an air coil with only a few turns executed sensor, about its arrangement and design in no other details are given.
- the object of the invention is an active sensor for a radiant heater to create the simple and robust construction is easy to arrange on the radiant heater and as concise as possible Radiator control signal.
- the sensor is a loop made of electrically conductive material in the area the heating zone and arranged at least partially overlapping. This is compared to one in the edge area of the radiator rotating sensor the signal much more meaningful for the Coverage of the heating zone and thus more concise for the detection. This is unusual in that one should assume that by an Edge arranged sensor especially the associated cookware size would be recognized precisely because the signal size in the form of the relative Frequency shift in the edge area is particularly large and then drops sharply (parabolically) towards the center. The problem here, however, is that such an edge coil was found to be hardly between a relative small pot, which is still supposed to switch on, and one can distinguish a large pot that is moved to the heating surface, which should not cause an activation.
- Edge coils are always a problem due to the fact that radiant heaters are usually arranged in a tin plate, the Bottom and especially its edge strongly dampens the resonant circuit. The field therefore extends to a very narrow edge area, the delivers an evaluable signal at all.
- the sensor can be part of an inductive circuit, preferably by detuning the oscillating circuit working resonant circuit of a controller. So can the evaluation is done.
- radiators In general, such radiators must be considered that the bottom of the tin plate also dampens the magnetic field causes so that this is only relatively small-scale as a hose can form around the actual sensor conductor.
- a small pot Due to the arrangement of the sensor loop in the area of the heating zone achieved the greatest possible coverage of the sensor in the area be, in which the pot should cause an activation, and one if possible little coverage in the area where the heating element in question should be switched off. Therefore, a small pot also teaches proper centric arrangement a large signal while a moved pot only a small one clearly distinguishable from it Signal delivers.
- the sensor loop should therefore have its effective diameter in the range of the minimum diameter, advantageously something above namely around the area of the magnetic field "hose". As a result of There is no significant damping at a distance from the outer edge by this instead, which would fake a pot, so to speak. Thereby it is also possible to use one or only a few turns exhibiting sensor loop, while earlier usually the arrangement of a coil with many turns considered necessary was to get a sufficiently large signal in the form of a frequency shift in the measuring resonant circuit.
- the invention therefore advantageously enables the sensor loop in the immediate vicinity Area of the heating zone, i.e. directly the radiant heat exposed to arrange because with such a coil with one or only Insulation is not necessary for small turns with an air gap in between is.
- It consists of a stable, self-supporting and temperature-resistant Conducting material, preferably from a tube or solid, strong wire.
- a material comes like a high-alloy material Steel, e.g. a FeCrNi alloy in question. Training from non-ferromagnetic Material is useful because with one ferromagnetic material due to the high temperature that occurs the Curie point would be exceeded and that at this point itself changing magnetic properties would lead to a signal completely independent of the desired determination of a cooking vessel position is and would therefore falsify the result.
- the sensor loop and the control can advantageously be used for cooking vessel size detection be trained.
- the sensor loop different effective areas at a radial distance from each other have, e.g. in different circumferential areas essentially circumferential loop sections, which by radial Connection sections are interconnected.
- a sensor loop with a circular or polygonal shape omega-shaped bulges result. This cloverleaf shape is as special been recognized effectively.
- the characteristic " frequency deviation / diametric coverage by the cooking vessel" in contrast to the parabolic course, has a stepped course with a steep section shifted more towards the interior of the heating zone, which can have two diameter levels for dual-circuit radiators.
- the signal curve can be more closely adapted to the ideal shape. For a radiator with only one heating zone, this would be a flat signal curve in the edge area, a steepest possible drop in the area of the diameter of the smallest possible pot, which should still lead to switching on, and then a flat, as deep as possible curve to the middle of the heating zone.
- the robust, self-supporting sensor loop can be used with any radiator configuration can be easily arranged. These usually have one Outer edge made of insulating material and, if necessary, one for two-circuit radiators Partition.
- the sensor loop can rest on this, for what purpose Recesses can be provided to attach a sensor and insulating edge on the plate or a certain, but only slight Distance from it. Even with existing radiator designs retrofitting with pan detection is possible.
- FIG. 1 and 2 show an electric radiant heater 11, the under a glass ceramic plate 12 an electric hob or one other radiation cooking device is arranged. He has a flat Tin plate 13, the bottom 14 and edge 15 of a bottom layer 16 and an edge 17 made of electrically and thermally insulating and absorbing heat-resistant insulating material. It deals is preferably a microporous bulk material pressed pyrogenic silica airgel. The outer edge 17 is because improved mechanical strength separately manufactured and exists from a pressed or wet-formed and then post-dried ceramic fiber with binders etc.
- the sheet edge 15 does not quite reach the glass ceramic plate 12, but the insulating edge 17, which is pressed onto the glass ceramic plate from below is by the heater 11 by a pressure spring, not shown is pushed up.
- the radiant heater has two concentric heating zones 18, 19, which are delimited from one another by an intermediate wall 20 are, which, however, does not reach the glass ceramic plate.
- both heating zones 18, 19 there are electrical heating elements 21 in the form of thin, wavy ribbons arranged upright arranged standing on the surface 22 of the insulating body 16 are anchored in this with feet formed on their underside are that have a spade shape due to the corrugation of the tape. You cover the two heating zones 18, 19 evenly with the exception of an unheated one Central zone 59, in which an upward projection 43 of the insulating bottom 16.
- Fig. 2 shows the arrangement of the heating elements in meandering ring tracks. They are connected to a temperature monitor via heating element connections 23 24 and a separate terminal block 25 switched so that the outer heating zone 19 of the radiator in operation all the time switched on heating zone 18 can optionally be switched on.
- the Temperature monitor 24 has a rod-shaped sensor 26 which a temperature monitor / contact to maintain a permissible maximum temperature on the underside of the glass ceramic and a hot detector contact for signaling the hot state of the radiator in one Temperature monitor head 27 acts.
- the sensor 26 projects through the edge of the insulating body 17 and through the intermediate wall 20 and runs in one level above the heating elements 21, but mostly in one alley free from heating elements 28.
- the heater has a sensor in the form of a loop 30, the part a controller 31 for detecting the positioning of a cooking vessel on the hotplate covering the radiator 12.
- the sensor loop 30 forms an inductance of an oscillating circuit 32 which is connected to a relatively high frequency of 1 MHz to 5 MHz, for example.
- the damping of the sensor loop changes when a cooking vessel is placed on it 30 and thus the frequency of the resonant circuit 32. This will evaluated in the controller 31 and depending on it mechanical or electronic switches 33, 33a in the control, which turn on the heating zones 18, 19 for operation.
- An energy control device is also used to set the respective released power 34 (often referred to as energy regulator) provided the can be set to a certain power via an adjusting knob 35 can.
- a temperature controller can also be provided.
- the energy control device 34 can be thermo-mechanical, i.e. as a bimetal switch or, preferred to be designed as an electronic component, which may also be can be integrated into the controller 31.
- the line between the actual Sensor loop 30 and the other elements of the resonant circuit be kept as short as possible. Also a shielding of the lines is possible. Possibly. could be the actual cooking vessel detection contained component 36 of the control system separately from the rest Radiator control separately close to radiant heater 11 be arranged.
- the sensor loop 30 consists of a relatively thick round wire with a Diameter between 1 and 4 millimeters, preferably about 2 Millimeters, from a heat-resistant and non-magnetizable Material.
- a heat-resistant and non-magnetizable Material For example, in high-alloy steel such as an iron-chromium-nickel alloy his. Suitable materials are e.g. a steel with the material no. 1.4876 or a heating conductor material with the material no. 2.4869.
- the sensor can be grounded on one side. To achieve a low earth resistance (preferably less than 0.1 ohm), and that required very low ohmic resistance of the sensor, can these should be made correspondingly thick. For its function as a pot detection sensor with high frequency exposure is due The skin effect only makes its surface effective, so it can also be used as a tube could be trained. Because of the low ohmic resistance could this also be with copper or another highly conductive Material can be filled, while the jacket material for temperature resistance and scaling resistance. An embodiment is particularly advantageous with an electrically highly conductive galvanic coating, e.g. made of silver, or a version made of highly conductive solid material with e.g. galvanic, scale-resistant coating. The very rigid training The sensor loop 30 ensures that even with high thermal loads not sinking towards the heating elements 21 to calculate.
- an electrically highly conductive galvanic coating e.g. made of silver, or a version made of highly conductive solid material with e.g. galvanic, scale-resistant coating.
- the sensor loop forms a single-turn coil over the outer heating zone 19, but with a relatively large radial distance outer peripheral portions 37 extending from outer edge 17 and, again at a radial distance from the intermediate wall 20, over the inner peripheral portions 38 of the heating zone 18.
- the Top view of the sensor loop 30 has the basic shape of a three-leaf Cloverleaf with a relatively large, almost full circle Middle section and three lateral "leaves" in the form of a triangular Sector or omega. Depending on the size and control requirements more peripheral section sectors can also be provided his. At one of the peripheral section sectors 40 there are connections 41 in Form of outwardly directed, parallel sections of the Loop material provided.
- the entire sensor loop 30 with the shape described is flat and due to the relatively strong material, self-supporting and dimensionally stable.
- she in the present example lies on the one hand in the area of the connections 41 in shallow depressions of the outer edge 17 of the insulating body and is supported in the the rest with their connecting sections 39 on the intermediate wall 20 that does not quite reach the glass ceramic plate.
- This is the sensor loop is close or at a short distance from the bottom the glass ceramic plate 12 arranged and with a safety distance above the heating elements 21. It can be seen that the sensor 26 of the temperature monitor due to the arrangement shown, the sensor loop traverses only once, in the area of an inner peripheral portion 38.
- FIG. 2 shows a two-circuit radiator with two concentric heating zones 18, 19 shows, in Fig. 4 is a two-circuit heater with a total shown elongated oval shape.
- This radiant heater 11 has the remaining the same basic structure, a circular main heating zone 18 to which one side, delimited by an intermediate wall 20, an additional heating zone 19 connects, the half- or quarter-moon-shaped shape Has.
- a temperature monitor 24 is inclined at the main heating zone 18 provided and its sensor 26 projects radially only about to the middle of where he on a central projection 43 in the unheated central zone 59 of the Insulating body bottom 16 rests.
- the sensor loop 30 provided for this radiant heater is made of the same material as that of Figures 1 and 2. You has the shape of a quadrilateral that consists of straight circumferential sections there, which is parallel in the region of the longitudinal center line 44 of the radiator lead out connections 41 form. The one in the cross-center line 45 of the main heating zone 18 lying corners 46 of the square are in corresponding shallow depressions 47 of the outer edge of the insulating body 17, but within the sheet metal shell edge 15. The peripheral sections 38 thus run in the form of chords with a clear distance from Outer edge over large areas of the radiator and thus have an effective in the area of the heating zone 18 Diameter.
- connection section with a strong outward bend 39 connected which extends to outer corners 48, which, like the corners 46, on the outer edge 17 of the insulating body in corresponding depressions rest. They are straight through in the embodiment Section 37a interconnected, which is essentially central to Additional heating zone 19 crosses this and extends transversely to the longitudinal center line 44. This section could also correspond to the crescent shape of the Additional heating zone 19 should be rounded.
- the sensor loop 30 is therefore in total seven places on the insulating body, at the corners 46 and 48, at the connections 41 and, with their inner corners 49 between the square legs 38a and the connecting sections 39, on the intermediate wall 20. Their basic shape is that of a stylized one Fish.
- FIGS. 5 to 7 are for single-circuit radiators thought, i.e. Radiators that are just one coherent and always have jointly operated heating zone 18.
- the sensor loop 30 in FIG. 5 has the shape of a square with corners supported on the edge 17 46.
- the sensor 46 of the temperature monitor 24 projects essentially diagonally over the field delimited by the sensor.
- Fig. 6 an embodiment corresponding to Fig. 5 is shown, but in the sensor 26 of the temperature monitor 24 on both sides of straight Sections of the sensor loop 30 is flanked. Behind the free end of the temperature sensor 26, these are connected to one another. This is it is possible to have the temperature sensor and the sensor loop in the same Level, which leads to the reduction of the overall height with sufficient electrical distances.
- Fig. 8 shows a sensor loop 30 for a two-circuit radiator, which in Area of the partition 20 between the main heating zone 18 and the surrounding area Additional heating zone 19 is.
- the essentially square Design similar to Fig. 5 of the loop is much smaller and is sufficient the outside corners in the area of the additional heating zone, while the peripheral sections 38a paint over the exterior of the main heating zone 18.
- Fig. 10 shows an embodiment for a two-circuit radiator, in contrast to the other radiators, which essentially consist of a single wind Passed loop, forms a double loop, but parallel is switched.
- the shape is that of two squares inside each other, which are both connected to the same connections 41 and only to increase their surface coverage at a distance from each other have circumferential sections extending, but electrically a single wind Form a loop.
- the inner of the two loops lies, as in FIG. 8 described on the intermediate wall 20 while the outer loop 5 rests with its corners on the outer edge 80.
- the Relatively stable, but elastic design of the sensor loop enables it also e.g. by snapping into recesses in the The margin. Also a definition by plugging in the insulating material, e.g. with welded-on pins is possible.
- the method by which the pot detection works is based on the Figures 1 to 3 described.
- the desired button 35 Power level set and thus the controller 31 including the cooking vessel detection 36 is put into operation.
- This cooking vessel detection works inductively, i.e. the resonant circuit 32 becomes relative high frequency between 1 MHz and 5 MHz excited and the subsequent evaluation of the pot detection described in its result is in on built up in a known manner.
- the European patent application 0442 275 A2 please refer to the European patent application 0442 275 A2.
- the diagram in Fig. 3 shows the relative frequency response df over the Diameter, i.e. the frequency change df as a percentage of the maximum Frequency change in the measurement depending on the diameter coverage the hotplate and thus the sensor loop a cooking vessel.
- the diagram in Fig. 3 shows the relative frequency response df over the Diameter, i.e. the frequency change df as a percentage of the maximum Frequency change in the measurement depending on the diameter coverage the hotplate and thus the sensor loop a cooking vessel.
- Cross section of the radiator 11 indicated in FIG. 1.
- the diagram shows the following: when using a conventional one Sensor coil, which is arranged in the edge 17, would be the dash-dotted line Line 52 shown course of the frequency change over the Result in diameter.
- the signal value added up over the range would be practically proportional to the coverage of the circumference.
- Exactly Centrally placed large pot 51a (see Fig. 1) would be a good one Signal, but a somewhat smaller pot despite being exactly centric Coverage is not a reasonably usable signal.
- Switching threshold for example, significantly below 50% of the total signal size would set, on the one hand, the signal noise that occurs with such Sensors and their arrangement is relatively large, a circuit unreliable and on the other hand an eccentric (shifted) Pot (see double dash-dotted line 51 b in Fig. 2) already closed lead to an undesired activation.
- the Diameter of the small pot 51 corresponds to only the central one Main heating zone 18 be turned on alone, while at the left end of the Level 55, which is the minimum pot diameter for the central heating zone indicates the signal should drop off quickly.
- the curve generated by the sensor loop 30 56 approaches this theoretical ideal curve 53 by generally has a largely linear course, i.e. the signal size to the covered diameter is largely proportional, but it is the Step shape of the ideal curve contains approximate steps. It will possible to reliably large from small pots with just one sensor distinguish and above all a distinction between one displaced pot, which is supposed to cause an activation, and to reach a small saucepan that starts the middle main heating zone should put.
- the switchover points 57, 58 are shown in the diagram in FIG. 3. At point 57 (Signal level S1) only the middle heating zone 18 should be switched on and remain switched on until switching point 58 (switch 33 "ON”). At switching point 58 (signal size S2) the outer heating zone 19 switched on (both switches 33 and 33a "ON”). In other words: the Switch point 58 symbolizes the smallest size of the large pot 51 a, who should work with both heating zones, while switching point 57 the smallest size of a pot 51 indicates that there is still a switch should lead.
- Cooking vessel 51 is a pot whose diameter corresponds to that of the central main heating zone 18. It covers the Area of the heating zone 18 and the corresponding area of the sensor loop 30, ie mainly the inner circumferential sections 38 the signal level is approximately in the region of the first stage 55 3 is in the diagram. This signal is between the one specified there Signal values S1 and S2, so that only the central main heating zone 18 is turned on.
- the cooking mode runs without any influence by the Pot detection either power or temperature controlled and under monitoring the temperature monitor 24 of the glass ceramic plate protects against overheating.
- the function is comparable, only that instead of concentric arrangement, side by side arrangement of the heating zones and their coverage by a correspondingly round or elongated cooking vessel (oval roaster) either only Main heating zone 18 or additionally the additional heating zone 19 switched on becomes. There, too, a certain level is created by the arrangement of the individual sections of the sensor loop. Above all, the stepped signal curve given the possibility of depending on the diameter turn.
- Pot detection sensor created that is not only particularly simple, robust and can be retrofitted, but also a sharp one and for those Circuit provides usable signal in a wide range. Especially can thus create several effective areas for pot detection so that pots of different diameters are different Trigger heating. With a sensor it becomes a real cooking vessel size recognition possible. It would be, albeit with more construction work, also possible, e.g. for two-circuit radiators, with two sensors to achieve according to the invention, being opposite an arrangement two conventional sensors in the outer and intermediate edge both structural as well as functional advantages. Through the Arrangement in the area of the heating zone itself results in a Diameter with changes usable for switching Result that is roughly called linearized can, but advantageously that shown in the diagrams Fig. 3 and 11 Has step or jump characteristics.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Electric Stoves And Ranges (AREA)
- Cookers (AREA)
- Resistance Heating (AREA)
- Control Of Resistance Heating (AREA)
Abstract
Description
- Fig. 1
- einen zentralen Schnitt durch einen Strahlungsheizkörper unter einer Glaskeramikplatte mit angedeuteten Kochgefäßen,
- Fig. 2
- eine Draufsicht auf den Strahlungsheizkörper nach Fig. 1,
- Fig. 3
- eine Diagramm über den Frequenzgang bei einem Zweikreisheizkörper,
- Fig. 4
- eine Draufsicht auf eine Variante eines Strahlungsheizkörpers,
- Fig. 5-10
- Draufsichten auf weitere Varianten in schematischer Darstellung und
- Fig. 11
- ein Frequenzgang-Diagramm eines Sensors für einen Einkreisheizkörper (Fig. 5 bis 7).
Claims (13)
- Sensor für einen elektrischen Strahlungsheizkörper (11) zur Erkennung der Positionierung eines Kochgefäßes (51) auf einer den Heizkörper (11) überdeckenden Kochplatte (12), insbesondere einer Glaskeramikplatte, wobei der Sensor als Schleife (30) aus elektrisch leitfähigem Material im Bereich wenigstens einer von elektrischen Strahlungsheizelementen (21) beheizten Heizzone (18, 19) und diese zumindest teilweise übergreifend angeordnet ist, dadurch gekennzeichnet, dass die Sensorschleife (30) nur eine oder ggf. wenige gestaltfeste, selbsttragende und temperaturbeständige Windungen aufweist.
- Sensor nach Anspruch 1, dadurch gekennzeichnet, dass die Sensorschleife (30) eine von einer Konzentrizität zur Heizzone (18, 19) abweichende Form hat.
- Sensor nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Sensorschleife (30) im Randbereich der wenigstens einen Heizzone (18, 19) mit Abstand vom Außenrand und/oder einer unbeheizten Mittelzone (59) des Heizkörpers (11) verläuft.
- Sensor nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Sensorschleife (30) in radialem Abstand voneinander unterschiedliche, im wesentlichen in Umfangsrichtung verlaufende Schleifenabschnitte (37, 38) aufweist, die ggf. durch mehrere radial gerichtete Verbindungsabschnitte (39) miteinander verbunden sind.
- Sensor nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Sensorschleife aus massivem, starkem Draht besteht, der insbesondere unisoliert ist.
- Sensor nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Sensorschleife (30) als Rohr ausgebildet ist.
- Sensor nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Sensorschleife (30) aus einem mehrschichtigen Material besteht, z.B. einem Rohr aus temperaturbeständigem, zunderfestem Material mit einer Füllung aus gut leitfähigem Material, wie Kupfer.
- Sensor nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Sensorschleife (30) einen Überzug aufweist.
- Sensor nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Überzug aus elektrisch gut leitendem Material besteht.
- Strahlungsheizkörper nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Sensorschleife (30) sich auf einem aus Isoliermaterial bestehendem Außenrand (17) und/oder einem unterschiedliche Heizzonen (18, 19) abgrenzenden Zwischenrand (20) abstützt, wobei vorzugsweise radiale Verbindungsabschnitte (39) und/oder nach außen gerichtete Abbiegungen (46, 48) der Sensorschleife (30) Auflagerabschnitte bilden.
- Strahlungsheizkörper nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Sensorschleife (30) eine Kreis- oder Mehreckform mit Umfangsabschnittssektoren (40) in Form omegaförmiger Ausbuchtungen aufweist.
- Strahlungsheizkörper nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Sensorschleife (30) aus nicht magnetisierbarem Material, wie einem hochlegierten Stahl, z.B. einer Eisen-Chrom-Nickellegierung besteht.
- Strahlungsheizkörper nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Sensorschleife (30) dicht unterhalb der Kochplatte (12), ggf. über einem Fühler (26) eines Temperaturwächters (24) oder in gleicher Ebene mit ihm mit wesentlichem Abstand von den Heizelementen (21) angeordnet ist.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19603845 | 1996-02-05 | ||
DE19603845A DE19603845B4 (de) | 1996-02-05 | 1996-02-05 | Elektrischer Strahlungsheizkörper mit einem aktiven Sensor zur Kochgefäßerkennung |
EP97100766A EP0788293B1 (de) | 1996-02-05 | 1997-01-18 | Elektrischer Strahlungsheizkörper mit einem aktiven Sensor zur Kochgefässerkennung |
EP99123892A EP0982973B2 (de) | 1996-02-05 | 1997-01-18 | Sensor zur Kochgefässerkennung |
Related Parent Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99123892A Division-Into EP0982973B2 (de) | 1996-02-05 | 1997-01-18 | Sensor zur Kochgefässerkennung |
EP99123892A Division EP0982973B2 (de) | 1996-02-05 | 1997-01-18 | Sensor zur Kochgefässerkennung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1379105A2 true EP1379105A2 (de) | 2004-01-07 |
EP1379105A3 EP1379105A3 (de) | 2004-11-03 |
Family
ID=7784387
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97100766A Expired - Lifetime EP0788293B1 (de) | 1996-02-05 | 1997-01-18 | Elektrischer Strahlungsheizkörper mit einem aktiven Sensor zur Kochgefässerkennung |
EP03022466A Withdrawn EP1379105A3 (de) | 1996-02-05 | 1997-01-18 | Sensor zur Kochgefässerkennung |
EP99123892A Expired - Lifetime EP0982973B2 (de) | 1996-02-05 | 1997-01-18 | Sensor zur Kochgefässerkennung |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97100766A Expired - Lifetime EP0788293B1 (de) | 1996-02-05 | 1997-01-18 | Elektrischer Strahlungsheizkörper mit einem aktiven Sensor zur Kochgefässerkennung |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99123892A Expired - Lifetime EP0982973B2 (de) | 1996-02-05 | 1997-01-18 | Sensor zur Kochgefässerkennung |
Country Status (6)
Country | Link |
---|---|
US (1) | US5893996A (de) |
EP (3) | EP0788293B1 (de) |
JP (1) | JPH09223572A (de) |
AT (2) | ATE204114T1 (de) |
DE (3) | DE19603845B4 (de) |
ES (2) | ES2162136T3 (de) |
Families Citing this family (61)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19700753C2 (de) * | 1997-01-11 | 2000-09-14 | Schott Glas | Kochfeld mit einer nicht-metallischen Kochplatte |
DE19907596A1 (de) * | 1999-02-22 | 2000-08-24 | Patrick Leidenberger | Selbst-Fokussierende-Herdplatte |
GB2349471B (en) * | 1999-04-27 | 2003-08-06 | Ceramaspeed Ltd | Electric heater assembly |
DE19930830A1 (de) * | 1999-07-03 | 2001-01-18 | Dold Gmbh Mes Und Regeltechnik | Verfahren und Sensoreinrichtung zur Erfassung der Größe einer Topfbodenfläche über einer Heizzone |
DE19945297A1 (de) | 1999-09-22 | 2001-03-29 | Diehl Ako Stiftung Gmbh & Co | Topferkennung |
US6184501B1 (en) * | 1999-09-23 | 2001-02-06 | Cherry Gmbh | Object detection system |
US6140617A (en) * | 1999-10-22 | 2000-10-31 | General Electric Company | Cooktop control and monitoring system including detecting properties of a utensil through a solid-surface cooktop |
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DE10023179C2 (de) * | 2000-05-11 | 2002-07-18 | Schott Glas | Vorrichtung und deren Verwendung Steuerung von Kochfeldern mit Glaskeramikkochflächen |
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- 1997-01-18 ES ES97100766T patent/ES2162136T3/es not_active Expired - Lifetime
- 1997-01-18 DE DE59711476T patent/DE59711476D1/de not_active Expired - Lifetime
- 1997-01-18 EP EP97100766A patent/EP0788293B1/de not_active Expired - Lifetime
- 1997-01-18 ES ES99123892T patent/ES2218941T5/es not_active Expired - Lifetime
- 1997-01-18 AT AT97100766T patent/ATE204114T1/de not_active IP Right Cessation
- 1997-01-18 EP EP03022466A patent/EP1379105A3/de not_active Withdrawn
- 1997-01-18 EP EP99123892A patent/EP0982973B2/de not_active Expired - Lifetime
- 1997-01-18 AT AT99123892T patent/ATE263475T1/de not_active IP Right Cessation
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Also Published As
Publication number | Publication date |
---|---|
EP0788293A3 (de) | 1998-01-07 |
DE19603845B4 (de) | 2010-07-22 |
EP0982973B1 (de) | 2004-03-31 |
DE19603845A1 (de) | 1997-08-07 |
DE59711476D1 (de) | 2004-05-06 |
US5893996A (en) | 1999-04-13 |
DE59704217D1 (de) | 2001-09-13 |
ES2218941T5 (es) | 2009-06-01 |
ES2218941T3 (es) | 2004-11-16 |
EP0982973A2 (de) | 2000-03-01 |
EP0982973B2 (de) | 2009-02-11 |
JPH09223572A (ja) | 1997-08-26 |
EP0788293B1 (de) | 2001-08-08 |
EP1379105A3 (de) | 2004-11-03 |
ATE204114T1 (de) | 2001-08-15 |
EP0982973A3 (de) | 2000-05-03 |
ATE263475T1 (de) | 2004-04-15 |
ES2162136T3 (es) | 2001-12-16 |
EP0788293A2 (de) | 1997-08-06 |
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