EP0763694B1 - Verfahren zur Temperaturregelung für eine sensorgesteuerte Garungseinheit - Google Patents
Verfahren zur Temperaturregelung für eine sensorgesteuerte Garungseinheit Download PDFInfo
- Publication number
- EP0763694B1 EP0763694B1 EP96113001A EP96113001A EP0763694B1 EP 0763694 B1 EP0763694 B1 EP 0763694B1 EP 96113001 A EP96113001 A EP 96113001A EP 96113001 A EP96113001 A EP 96113001A EP 0763694 B1 EP0763694 B1 EP 0763694B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- temperature
- cooking
- holding process
- target
- sensor
- 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.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims description 37
- 238000010411 cooking Methods 0.000 title claims description 23
- 230000001105 regulatory effect Effects 0.000 title claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 13
- 239000002241 glass-ceramic Substances 0.000 claims description 4
- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 claims 1
- 235000013305 food Nutrition 0.000 description 9
- 238000010586 diagram Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 235000021186 dishes Nutrition 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 235000012020 french fries Nutrition 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- 235000014347 soups Nutrition 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Images
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
-
- 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
- F24C15/102—Tops, e.g. hot plates; Rings electrically heated
- F24C15/106—Tops, e.g. hot plates; Rings electrically heated electric circuits
Definitions
- the invention relates to a method for temperature control for a sensor-controlled cooking unit consisting of a cooking device, sensors and hob, for example a glass ceramic hob, with both the hob and the cooking appliance May contain sensor-specific configurations.
- EP 0 658 067 A1 describes a Control for household appliances for the evaluation of sensor signals, especially for radiant heating in glass ceramic cooktops, known, the control sensory operated, direct and indirect temperature measurements of the decoding the respective hotplate of a glass ceramic cooktop and compares it with typical temperature profiles, and wherein the controller performs a pot detection and in In the event of a hotplate idle, the control unit controls the radiant heating switches off.
- the object of the invention is therefore the temperature of the food in cookware on troughs by an infrared sensor to measure without contact, the signals of this sensor too a controller, through which the food temperature led as precisely as possible to a setpoint and held there shall be.
- Figures 1, 2 show both the starting process and the holding process of the regulation in the case of conventional regulation and almost ideal regulation recognizable.
- the controller estimates the approach from the difference a first target temperature of the start value and the setpoint up to which the cookware is heated up without the heating of the hotplate being cycled. In order to the fastest possible heating is achieved. Is the first When the target temperature is reached, the hotplate is switched off. Because of the possible heat capacity of the hotplate the temperature of the cookware can be reheated for a short time become and rise slightly, the temperature of the cookware so the actual target temperature of the Cookware is approaching.
- the controller that is equipped with intelligence is determined by experimentally determined times Switched off the hotplate after the start-up process be on operation heating the setpoint.
- the holding process of the setpoint is made up of two sections. This is particularly important if the temperature of the food has to be kept relatively constant over a long period of time.
- the control device switches to the holding process I.
- the setpoint is held by simply comparing the temperatures T setpoint and T actual with the corresponding switching of the control device with respect to the heating device of the hotplate.
- the control system can also intelligently take into account on and off times for switching cycles of the hotplate heating, which defines the current energy consumption of the cookware. As a result, the holding process I can be further optimized.
- the minimum on and off times of the hotplate are determined, and the holding process II is initiated. From now on, the controller will automatically cycle with the previously determined switching times. If the temperature of the food drifts, the switching times are corrected so that the on and off times of the hotplate remain minimal.
- the strict program sequence sequences of a regulation consisting of the starting process, the stopping process I and the stopping process II, are defined. 3 can be seen from the start of the control 31, the subsequent step that the control takes in the control process, 32, namely firstly estimating the first target temperature, secondly switching on the hotplate. This happens in the start-up process.
- control determines that the desired target temperature has been reached, it switches off the hotplate in step 34 and waits for the temperature of the food to settle.
- step 33 if the position target temperature is negated, the hotplate continues to be operated until the target temperature of the food to be cooked is reached.
- the evaluation of the actual temperature to the target temperature after the transient process follows.
- the comparison temperature check carried out in step 35 leads, in the event that the actual temperature has already exceeded the target temperature, to switching off the hotplate and registering the necessary switching time. If the actual temperature has not yet reached the target temperature, the hotplate remains switched on and the necessary switch-on time until the target temperature is reached is registered by the intelligent control.
- This step 36 leads to the fact that the hotplate is continuously clocked with the determined switching times in the controller step 37, the switching times having to be corrected continuously if necessary.
- control according to the invention are, in particular, that by dividing the control process into a start-up towards the setpoint and the stages of maintaining the setpoint of the temperature, overshoots and undershoots can be kept within tolerable limits, if necessary effectively avoided. This is important for cooking processes, as it is particularly overshoots that cause the food to burn, boil and boil over.
- the division of the holding process in the form shown in FIG. 4 allows the temperature setpoint T Soll to be controlled with a minimum possible control amplitude.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cookers (AREA)
- General Preparation And Processing Of Foods (AREA)
Description
- Fig. 1
- einen Regelungsverlauf bei relativ konventioneller Regelung im Diagramm,
- Fig.2
- einen Regelungsverlauf bei idealer Regelung im Diagramm,
- Fig.3
- ein spezielles Ablaufprogramm für die Temperaturregelung und
- Fig.4
- eine Sollwertvorgabe für verschiedene Garverfahren.
Claims (5)
- Verfahren zur Temperaturregelung für eine sensorgesteuerte Garungseinheit, bestehend aus Kochgeschirr, Sensorik und Kochfeld, beispielsweise Glaskeramik-Kochfeld, wobei sowohl das Kochfeld als auch das Kochgeschirr sensorspezifische Ausgestaltungen enthalten kann,
dadurch gekennzeichnet, daß die Temperatur von Kochgut in dem Kochgeschirr auf dem Kochfeld berührungslos durch einen Infrarotsensor gemessen wird, daß das Temperaturregelungsverfahren aus einem Anfahrvorgang und einem Haltevorgang, bezogen auf den jeweils zu erreichenden Temperatursollwert, besteht, wobei das Anfahren des Temperatursollwertes aus der Differenz von Temperatursollwert und Temperaturstartwert mit einer ersten Zieltemperatur erfolgt und in den Haltevorgang für das Temperaturverhalten des Sollwertes überleitet, wobei der Temperaturhaltevorgang durch einen Soll-Ist·Wertvergleich der Garguttemperaturen schrittweise optimiert wird. - Verfahren zur Temperaturregelung nach Anspruch 1, dadurch gekennzeichnet, daß die Kochstelle im ersten Anfahrvorgang ungetaktet betrieben wird.
- Verfahren zur Temperaturregelung nach Anspruch 1, dadurch gekennzeichnet, daß der Temperaturhaltevorgang in zwei Etappen erfolgt.
- Verfahren zur Temperaturregelung nach Anspruch 3, dadurch gekennzeichnet, daß im Temperaturhaltevorgang 1 die Regelung das Halten des Sollwertes dadurch realisiert, daß sie einen Vergleich von Soll- und Isttemperatur mit dem Schalten der Kochstelle kombiniert.
- Verfahren zur Temperaturregelung nach Anspruch 3, dadurch gekennzeichnet, daß beim Temperaturhaltevorgang 2 die Regelung mit bereits ermittelten Schaltzeiten die Heizleistung taktet.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19533971A DE19533971A1 (de) | 1995-09-13 | 1995-09-13 | Verfahren zur Temperaturregelung für eine sensorgesteuerte Garungseinheit |
DE19533971 | 1995-09-13 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0763694A1 EP0763694A1 (de) | 1997-03-19 |
EP0763694B1 true EP0763694B1 (de) | 2000-10-18 |
Family
ID=7772081
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96113001A Expired - Lifetime EP0763694B1 (de) | 1995-09-13 | 1996-08-09 | Verfahren zur Temperaturregelung für eine sensorgesteuerte Garungseinheit |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0763694B1 (de) |
DE (2) | DE19533971A1 (de) |
ES (1) | ES2153067T3 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19813550A1 (de) * | 1998-03-27 | 1999-09-30 | Ego Elektro Geraetebau Gmbh | Verfahren zum Betrieb eines Elektrowärmegerätes |
DE19821439A1 (de) * | 1998-05-13 | 1999-11-18 | Bsh Bosch Siemens Hausgeraete | Sensorgesteuerte Garungseinheit mit Selbstkalibrierung |
DE10223686B4 (de) * | 2002-05-23 | 2014-10-09 | Behr Thermot-Tronik Gmbh | Verfahren zum Ansteuern eines beheizbaren Dehnstoffelements |
DE102011017638A1 (de) * | 2011-04-27 | 2012-10-31 | BSH Bosch und Siemens Hausgeräte GmbH | Verfahren zum Betreiben eines Gargeräts sowie Steuer- und Regeleinrichtung für ein Gargerät und Gargerät |
BE1031128B1 (de) * | 2022-12-13 | 2024-07-08 | Miele & Cie | Verfahren zum Betrieb eines induktiven Kochsystems |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4217749C2 (de) * | 1992-05-29 | 1996-11-21 | Miele & Cie | Verfahren zur Steuerung der Backmuffeltemperatur |
DE4223654A1 (de) * | 1992-07-17 | 1994-01-20 | Bosch Siemens Hausgeraete | Steuereinrichtung für ein verschließbares Gerät |
DE4237570A1 (de) * | 1992-11-06 | 1994-05-11 | Bosch Siemens Hausgeraete | Backofen |
DE4341485A1 (de) | 1993-12-06 | 1995-06-08 | Bosch Siemens Hausgeraete | Steuerung für Haushaltgeräte zur Auswertung von Sensorsignalen |
-
1995
- 1995-09-13 DE DE19533971A patent/DE19533971A1/de not_active Withdrawn
-
1996
- 1996-08-09 EP EP96113001A patent/EP0763694B1/de not_active Expired - Lifetime
- 1996-08-09 ES ES96113001T patent/ES2153067T3/es not_active Expired - Lifetime
- 1996-08-09 DE DE59606018T patent/DE59606018D1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE59606018D1 (de) | 2000-11-23 |
ES2153067T3 (es) | 2001-02-16 |
EP0763694A1 (de) | 1997-03-19 |
DE19533971A1 (de) | 1997-03-20 |
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