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WO2019037962A1 - Appareil ménager de cuisson - Google Patents

Appareil ménager de cuisson Download PDF

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Publication number
WO2019037962A1
WO2019037962A1 PCT/EP2018/069585 EP2018069585W WO2019037962A1 WO 2019037962 A1 WO2019037962 A1 WO 2019037962A1 EP 2018069585 W EP2018069585 W EP 2018069585W WO 2019037962 A1 WO2019037962 A1 WO 2019037962A1
Authority
WO
WIPO (PCT)
Prior art keywords
cooking
time
core temperature
household
food
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.)
Ceased
Application number
PCT/EP2018/069585
Other languages
German (de)
English (en)
Inventor
Hans-Jürgen Bauer
Simon Gallinger
Barbara Ranzenberger
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Hausgeraete 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 BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Publication of WO2019037962A1 publication Critical patent/WO2019037962A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • G01K7/42—Circuits effecting compensation of thermal inertia; Circuits for predicting the stationary value of a temperature
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K2207/00—Application of thermometers in household appliances
    • G01K2207/02—Application of thermometers in household appliances for measuring food temperature
    • G01K2207/06—Application of thermometers in household appliances for measuring food temperature for preparation purposes

Definitions

  • the invention relates to a household cooking appliance, comprising a cooking chamber, a data connection device for establishing a data connection with a core temperature sensor and a control device which is set up to control the household cooking appliance based on temperature measurement values of the core temperature sensor, an anticipated cooking time of the cooking product, in which the core temperature probe is inserted, to calculate based on temperature readings of the core temperature probe and display the calculated estimated cooking time and / or a calculated estimated remaining cooking time.
  • the invention also relates to a system having such a household cooking appliance and having at least one core temperature sensor connectable to the data connection device.
  • the invention also relates to a method for determining an expected cooking duration and / or cooking time of cooking product. The invention is particularly advantageously applicable to ovens.
  • DE 10 2007 040 316 A1 discloses a method for indicating a remaining cooking time during a cooking process in a cooking appliance with a door closable by a door
  • Cooking chamber a heater, a display device, an operating device, a memory device, a control or regulating device and at least one
  • Sensing device wherein via the operating device at least one desired cooking size and / or desired cooking size can be set, depending on the Restgarzeit is determined to then be displayed on the display device, wherein in a first phase of the cooking process as a function of at least a set set cooking size and / or set cooking size estimated maximum and / or minimum value of the remaining cooking time is displayed, and in at least one further phase of the cooking process depending on a comparison between stored in the storage device values and at least one detected by the sensing device Value of at least one Gargutacious and / or Gargina certain Restgarzeit is displayed.
  • DE 42 17 943 A1 discloses an oven or microwave oven with a temperature probe for detecting the temperature of the food to be cooked and a control and monitoring circuit for controlling the heating energy according to a cooking program and to shut off the heating energy upon reaching a user-set Endkerntemperatur.
  • the user should be provided with such an oven information about the remaining period available.
  • a display device which in the operating mode temperature-controlled cooking, the calculated by a computer circuit in response to measured during the cooking core temperature values remaining cooking time or the time at which the Endkerntemperatur is reached indicates.
  • WO 2008/061634 A1 discloses a method for determining a remaining time until the end of a cooking process of a food. First, a target temperature value is defined for a core of the food. Next, the actual core temperatures in the core of the food are measured at predetermined times and a time dependence of the actual core temperature is determined. The time dependency of the actual temperature is then compared with the setpoint temperature value, and from this a remaining running time of the cooking process is estimated. WO 2008/061634 A1 further relates to a corresponding device for determining the remaining time to an end of a cooking process.
  • a household cooking appliance comprising a cooking chamber, a data connection device at least for establishing a data connection with a core temperature sensor and a control device.
  • the control device is configured to control the domestic cooking appliance based on temperature readings of the core temperature probe, to calculate an expected cooking time of food to be cooked into which the core temperature probe is inserted, based on temperature readings of the core temperature probe, and the calculated cooking time and / or a calculated remaining cooking time display.
  • the controller is also adapted to the cooking time and / or calculate the remaining cooking time assuming a proportional increase of a core temperature of the food with a first-order delay and taking into account a dead time.
  • the household cooking appliance has the advantage that with the progress of the cooking process, the forecast of the cooking time, remaining cooking time, etc. becomes more and more accurate. In addition, the cooking time, residual cooking time, etc. can be determined simply from the course of the core temperature. No comparison tables or reference curves are needed.
  • the household cooking appliance can be an oven.
  • the oven may be a standalone oven or part of a combination appliance such as a cooker.
  • the oven can be an oven, a microwave oven and / or a steamer.
  • the oven may be an oven with microwave functionality and / or steam cooking functionality.
  • the cooking chamber is used for the treatment of food, eg for heating or heating. If the cooking appliance is an oven, the cooking chamber can also be referred to as oven room.
  • the data connection device can be set up for establishing a wired data connection and / or a wireless data connection.
  • the data connection device may e.g. have a cable connection.
  • the data connection device can also be set up to supply power to the core temperature sensor.
  • the control device is thus configured to receive measured (core) temperature measured values of the core temperature sensor by means of the core temperature sensor at timely intervals and to use it to control a cooking cycle of the cooking product.
  • control device is set up to calculate the expected cooking duration of the cooking product may include that, alternatively or additionally, at least one time variable derived from the cooking time is calculated, e.g. the expected
  • the cooking time and the remaining cooking time differ only by a linear term and can therefore be easily converted into each other.
  • the remaining cooking time can be determined as the difference between the calculated cooking time and the cooking time previously passed.
  • the time variables, in particular the cooking duration and the remaining cooking time can also be used synonymously in the following, unless something else is specifically meant.
  • the setting up of the control device can comprise a corresponding programming of the control device.
  • the proportional increase of the core temperature of the food with a first-order delay, taking into account a dead time, is analogous to a time behavior of a PT1 element with a deadtime element known from control technology.
  • control device is adapted to the estimated cooking time proportional to a first term MT according to Eq. (1 ):
  • D is the expected cooking time
  • t is a current time since the beginning of the cooking cycle
  • t- ⁇ a selected ("reference") time for the calculation of the expected cooking duration D
  • d (t) a current core temperature
  • ⁇ end is an "asymptotic" core temperature in a final state of the food after a long time
  • d So ⁇ is a desired temperature of the food.
  • the reference time t-1 is in particular automatically selected or set by the household cooking appliance.
  • the asymptotic core temperature 0 E nde corresponds to a final value of the core temperature d (t), which theoretically approaches the core temperature 0 E nde as its limit asymptotically.
  • the relationship according to Eq. (1) can be derived by assuming that the increase of the core temperature d (t) in a cooking space according to Eq. (2):
  • T te is a dead time and T e is a time constant. This can be done according to Eq. (3) change to
  • control device is adapted to the prospective cooking time proportional to the first term MT and a second term (correction factor) CR according to Eq. (7):
  • CR (t) 1 - A initially too large forecast values of the expected cooking time are correctable. Initially, large forecast values of the expected cooking duration D are reduced, while later forecast values are not or not significantly changed.
  • the parameter A indicates at which time the correction factor CR the value according to Eq. (9):
  • the dependence of A on the nominal core temperature d So ⁇ can for example be stored in the household cooking appliance in the form of corresponding characteristic curves, tables, etc.
  • the parameter A may additionally or alternatively be dependent on a selected cooking program and / or food and be set automatically by the control device. It is a further embodiment that the reference time t- ⁇ , which is required for the calculation of the cooking duration D, according to Eq.
  • (10) t t - At, where At corresponds to a fixed predetermined period of time ("time window"), eg 1 min, 2 min, 5 min, etc.
  • the interval period is basically arbitrary. It can be kept constant or varied during a cooking cycle. If the reference time t- ⁇ according to Eq. (10), the cooking time t, the current core temperature 0 (t), the reference time t1 and the core temperature measured before At enter into the cooking time D.
  • the cooking duration D can be calculated eg at intervals of At.
  • the reference time t1 moves with it, ie, that with each time-offset calculation, a new value of t1 is used.
  • the time window At thus remains the same size and moves with t.
  • the delay period At may be dependent on the target core temperature d So ⁇ . This can be stored, for example, in the form of corresponding characteristic curves, tables, etc. in the household cooking appliance.
  • the time window At can be dependent on a selected cooking program and / or food and automatically adjusted by the control device.
  • Cooking process corresponds.
  • the reference time t-1 thus remains constant for a cooking cycle.
  • the temperature difference ⁇ may be, for example, a few Kelvin, for example 3 K.
  • Garraums corresponds. This has the advantage that even low-temperature cooking processes can be taken into account with high accuracy.
  • control device is set up to suppress or not to display an indication of the expected cooking duration and / or the expected remaining cooking time, if, for example, according to Eq. (4) determinable time constant T e ⁇ 0 applies.
  • T e can assume negative values
  • no negative cooking time is displayed.
  • the course of the core temperature of the step response of a PT1 element is not sufficiently similar.
  • T e ⁇ 0 a plausibility condition can be introduced which gives a clue as to whether the actual course of the core temperature can be meaningfully described by the functional approximation described above.
  • control device is set up to calculate the expected cooking duration and / or the expected remaining cooking time based on temperature measured values of a plurality of temperature sensors of the core temperature sensor.
  • the system can be designed analogously to the household cooking appliance and has the same advantages.
  • the object is also achieved by a method for determining an anticipated cooking duration and / or cooking time in which the expected cooking duration and / or remaining cooking time is calculated assuming a proportional increase of a core temperature of the food with a first order delay and taking into account a dead time ,
  • the method can be made analogous to the household cooking appliance and to the system and has the same advantages.
  • FIG. 1 shows a sectional side view of an inventive household cooking appliance
  • FIG. 2 shows a plot of a core temperature in ° C. against a time in minutes for a measured time course of the core temperature and after
  • Figure 3 shows as a plot of a cooking time in minutes against a time in minutes for two variants to calculate the cooking time compared to a true
  • the oven 1 has a cooking chamber 2, a data connection device 3 at least for establishing a data connection with a core temperature sensor KTF and a control device 4.
  • the data connection Direction 3 may be, for example, a plug connection element for inserting a cable K of the core temperature sensor KTF.
  • the core temperature sensor KTF can transmit to the oven 1 via the cable K (core) temperature measured values, in particular to the control device 4 connected to the data connection device 3.
  • the oven 1 can optionally supply the core temperature sensor KTF via the cable K with power.
  • the core temperature sensor KTF may have one or more temperature sensors.
  • the control device 4 is adapted to control the oven 1 based on the temperature readings of the core temperature sensor KTF, as indicated by the broad arrow, e.g. To activate heating elements for heating the cooking chamber 2 accordingly.
  • the control device 4 is set up to calculate an anticipated cooking duration and / or an expected remaining cooking time of food G into which the core temperature sensor KTF is inserted, as indicated, based on the temperature measured values sensed by the core temperature sensor KTF. More specifically, the control device 4 is configured to calculate the estimated cooking time assuming a proportional increase of a core temperature of the cooking product G with a first-order delay and considering a dead time.
  • the control device 4 is also set up to display at least a calculated estimated remaining cooking time, eg on a display device (not shown) of a control panel 5.
  • the display device may be, for example, a segment display or a screen.
  • FIG. 2 shows, as a plot of a core temperature ⁇ in ° C against a time t in minutes, for a measured time course L1 of the core temperature ⁇ (t) and one according to Eq. (2) calculated, idealized approximation L2.
  • the core temperature ⁇ (t) typically stays below 100 ° C for foods that are not completely dry (such as meat or fish).
  • 3 shows a plot of a cooking time D in minutes against a time t in minutes for two variants D- 1 , D 2 for calculating the cooking time D in comparison to a "true", experimentally determined cooking time D r .
  • the true Gardauer D r is less than 50 minutes, about 48 minutes.
  • the experimentally determined course of D- ⁇ corresponds to the choice of the first reference time t- ⁇ according to Eq. (10), while the experimentally determined course of D 2 the choice of the constant reference time t- ⁇ according to Eq. (1 1) corresponds.
  • the cooking duration D can also be calculated by means of an alternate use of both determinations of the reference time t-1. This can be done, for example, by using D 2 until Di ⁇ D 2 , then only Di.
  • 4 shows a time course over a time in minutes of an exemplary correction factor CR according to Eq. (8th).
  • the correction factor CR is initially zero and then asymptotically approaches unity.
  • the present invention is not limited to the embodiment shown.
  • a number may include exactly the specified number as well as a usual tolerance range, as long as this is not explicitly excluded.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cookers (AREA)
  • Electric Stoves And Ranges (AREA)

Abstract

L'invention concerne un appareil ménager de cuisson (1) présentant un compartiment de cuisson (2), un dispositif de liaison de données (3) permettant d'établir une liaison de données avec un capteur de température à cœur (KTF), et un dispositif de commande (4), le dispositif de commande étant conçu pour commander l'appareil ménager de cuisson sur la base de valeurs de mesure de température du capteur de température à cœur, calculer une durée de cuisson (D, D1, D2) d'un produit à cuire (G) sur la base des valeurs de mesure de température, et afficher la durée de cuisson calculée (D, D1, D2) et/ou une durée de cuisson restante calculée. Le dispositif de commande est conçu pour calculer la durée de cuisson en supposant une augmentation proportionnelle d'une température à cœur (ϑ) du produit à cuire (G) avec un retard de premier ordre et en tenant compte d'un temps mort. L'invention concerne également un système présentant un appareil ménager de cuisson et au moins un capteur de température à cœur. L'invention concerne par ailleurs un procédé servant à déterminer une durée de cuisson et/ou une durée de cuisson restante d'un produit à cuire, selon lequel la durée de cuisson et/ou la durée de cuisson restante est calculée en supposant une augmentation proportionnelle d'une température à cœur du produit à cuire avec un retard de premier ordre et en tenant compte d'un temps mort. L'invention s'applique de manière particulièrement avantageuse à des fours.
PCT/EP2018/069585 2017-08-23 2018-07-19 Appareil ménager de cuisson Ceased WO2019037962A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017214753.9A DE102017214753A1 (de) 2017-08-23 2017-08-23 Haushalts-Gargerät
DE102017214753.9 2017-08-23

Publications (1)

Publication Number Publication Date
WO2019037962A1 true WO2019037962A1 (fr) 2019-02-28

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PCT/EP2018/069585 Ceased WO2019037962A1 (fr) 2017-08-23 2018-07-19 Appareil ménager de cuisson

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DE (1) DE102017214753A1 (fr)
WO (1) WO2019037962A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111713964A (zh) * 2020-06-01 2020-09-29 珠海格力电器股份有限公司 一种蒸烤箱及控制方法
DE102023208973A1 (de) 2023-09-15 2025-03-20 BSH Hausgeräte GmbH Regeln eines Garvorgangs mit einem Kerntemperaturfühler sowie Backofen
DE102023208975A1 (de) 2023-09-15 2025-03-20 Robert Bosch Gesellschaft mit beschränkter Haftung Regeln eines Garvorgangs in einem Backofen sowie Backofen
DE102023211730A1 (de) * 2023-11-24 2025-05-28 BSH Hausgeräte GmbH Verfahren zum Regeln eines Garvorgangs und Backofen

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4217943A1 (de) 1992-05-30 1993-12-02 Miele & Cie Backofen oder Mikrowellenofen mit Temperatursonde
DE19718399A1 (de) * 1997-04-30 1998-11-05 Rational Gmbh Verfahren zum individuellen Führen eines Garprozesses und zugehöriges Gargerät
US7102107B1 (en) * 2004-08-20 2006-09-05 Maverick Industries, Inc. Method, apparatus and system for predicting cooking completion time of food
US20070215599A1 (en) * 2006-03-17 2007-09-20 W.C. Bradley Company Systems and methods for predicting the time to change the temperature of an object
WO2008061634A1 (fr) 2006-11-24 2008-05-29 Electrolux Home Products Corporation N.V. Procédé et appareil pour déterminer le temps restant jusqu'au terme d'un processus de cuisson d'un aliment
DE102007040316A1 (de) 2007-08-24 2009-02-26 Rational Ag Verfahren zur Anzeige einer Restgarzeit
WO2015185404A1 (fr) * 2014-06-06 2015-12-10 Koninklijke Philips N.V. Dispositif et procédé de cuisson d'aliment en fonction d'une prédiction de température centrale d'aliment

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009019613A1 (de) * 2009-04-30 2010-11-04 Wmf Württembergische Metallwarenfabrik Ag Temperaturmesseinrichtung für ein Gargut
DE102013002476A1 (de) * 2013-02-13 2014-08-14 Wmf Ag Verfahren und Vorrichtung zur Berechnung der Gesamtdauer von Garprozessen von Lebensmitteln sowie Garverfahren

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4217943A1 (de) 1992-05-30 1993-12-02 Miele & Cie Backofen oder Mikrowellenofen mit Temperatursonde
DE19718399A1 (de) * 1997-04-30 1998-11-05 Rational Gmbh Verfahren zum individuellen Führen eines Garprozesses und zugehöriges Gargerät
US7102107B1 (en) * 2004-08-20 2006-09-05 Maverick Industries, Inc. Method, apparatus and system for predicting cooking completion time of food
US20070215599A1 (en) * 2006-03-17 2007-09-20 W.C. Bradley Company Systems and methods for predicting the time to change the temperature of an object
WO2008061634A1 (fr) 2006-11-24 2008-05-29 Electrolux Home Products Corporation N.V. Procédé et appareil pour déterminer le temps restant jusqu'au terme d'un processus de cuisson d'un aliment
DE102007040316A1 (de) 2007-08-24 2009-02-26 Rational Ag Verfahren zur Anzeige einer Restgarzeit
WO2015185404A1 (fr) * 2014-06-06 2015-12-10 Koninklijke Philips N.V. Dispositif et procédé de cuisson d'aliment en fonction d'une prédiction de température centrale d'aliment

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