EP4299990A1 - Procédé de commande automatisée d'une hotte aspirante et hotte aspirante conçue pour mettre en uvre le procédé - Google Patents

Procédé de commande automatisée d'une hotte aspirante et hotte aspirante conçue pour mettre en uvre le procédé Download PDF

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Publication number
EP4299990A1
EP4299990A1 EP23178690.6A EP23178690A EP4299990A1 EP 4299990 A1 EP4299990 A1 EP 4299990A1 EP 23178690 A EP23178690 A EP 23178690A EP 4299990 A1 EP4299990 A1 EP 4299990A1
Authority
EP
European Patent Office
Prior art keywords
sensor
extractor hood
control device
analysis
vapor
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.)
Pending
Application number
EP23178690.6A
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German (de)
English (en)
Inventor
Stefan Üffing
Stephan Robusch
Christin Gremme
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.)
Berbel Ablufttechnik GmbH
Original Assignee
Berbel Ablufttechnik 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 Berbel Ablufttechnik GmbH filed Critical Berbel Ablufttechnik GmbH
Publication of EP4299990A1 publication Critical patent/EP4299990A1/fr
Pending legal-status Critical Current

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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
    • F24C15/00—Details
    • F24C15/20—Removing cooking fumes
    • F24C15/2021—Arrangement or mounting of control or safety systems

Definitions

  • the invention relates to a method for the automated control of an extractor hood, which is arranged above a hob, using a control device by means of which at least one motor, which drives at least one fan, can be controlled and which is connected to sensors arranged in or on the extractor hood via an interface is communicatively connected, the sensors comprising an IR sensor and an air analysis sensor arrangement.
  • the DE 30 39 246 A1 discloses an extractor hood, which is arranged above a hob, with a control device by means of which a motor that drives a fan can be controlled, the control unit being communicatively connected to up to two sensors, the sensors being a temperature sensor and/or a Include humidity sensor.
  • the EP 4 027 061 A1 relates to a combination device with an extractor hood for a hob, with a sensor device which, for example as an IR sensor, determines the temperature of cooking pots or the food contained therein, moisture and / or volatile organic compounds. Only the humidity sensor and/or VOC sensor are used for auto-activation and control of the extractor hood. However, any further measurement or detection events are used to provide appropriate signals to the extractor hood control device so that the information can be used for an assisted cooking function that the combination appliance can provide.
  • a sensor device which, for example as an IR sensor, determines the temperature of cooking pots or the food contained therein, moisture and / or volatile organic compounds. Only the humidity sensor and/or VOC sensor are used for auto-activation and control of the extractor hood. However, any further measurement or detection events are used to provide appropriate signals to the extractor hood control device so that the information can be used for an assisted cooking function that the combination appliance can provide.
  • the DE 10 2012 220 598 A1 relates to a monitoring system for monitoring and setting at least one air parameter in the room for an extractor hood, the monitoring system comprising a CO or CO 2 sensor.
  • the publication DE 10 2018 201 047 A1 describes a method for the automated control of an extractor hood.
  • the method described there aims to make a prediction about the amount of vapor and, accordingly, to predict the optimal performance of the fan arranged in the extractor hood.
  • the environmental conditions should be monitored and various decision-making criteria should be used.
  • Monitoring is essentially carried out using imaging sensors. Activities on the hob or user gestures are recorded via the imaging sensors. For example, lifting the lid of a cooking pot on the hob indicates whether fumes are likely to form in the short term and the extractor hood fan should be activated accordingly.
  • a disadvantage of air quality sensors is that they are subject to strong fluctuations when the temperature and/or humidity changes.
  • the control device of the extractor hood works in accordance with the actual power requirement on the basis of the vapor analysis. This allows the extractor hood to be operated in a very energy-saving manner and noise emissions can be minimized.
  • the procedure is too independent of the hob and can be used for a wide range of hob manufacturers and types.
  • the air analysis sensor arrangement comprises a multispectral sensor. It is advantageous in the method according to the invention that the control device of the extractor hood recognizes the exact power requirement of the fan based on the vapor analysis from the measured values of the multispectral sensor. This allows the extractor hood to be operated in a particularly energy-saving manner and noise emissions can be minimized excellently.
  • the multispectral sensor is preferably an optical sensor which can selectively detect various components of the sucked-in air by measuring the wavelength-dependent light absorption, reflection or scattering.
  • the multispectral sensor can be designed in such a way that it can simultaneously measure particles in the air with different wavelengths on a plurality of channels (for example, more than ten in a practical implementation).
  • the multispectral sensor can, for example, distinguish between water vapor and frying vapors based on the particles detected in the air flow. But melting plastic, fog, oil vapor, liquid fire or cigarette smoke can also be detected using the multispectral sensor.
  • the spectral sensitivity of the multispectral sensor is advantageously defined by individual channels covering approximately 380 nm to 1000 nm with 12+2 channels. Twelve channels of the multispectral sensor preferably measure in the visible spectrum (VIS) to the near infrared (NIR). A clear channel and a flicker channel are also provided.
  • Vapor analysis can be supported by a full spectral reconstruction of the light and an integrated flicker detection channel, which can automatically detect ambient light flicker at 50/60 Hz and buffer data for external calculation of other flicker frequencies. This would significantly improve the planned control and determination of the cooking process.
  • the air analysis sensor arrangement comprises a VOC sensor and a humidity sensor and/or a temperature sensor.
  • VOC sensor in conjunction with a humidity sensor and/or a temperature sensor makes the vapor analysis more accurate by logically linking the measured values recorded.
  • the exceeding of a predetermined limit value can preferably be detected using the IR sensor and a warning signal can be output via the control device.
  • the limit value is expediently set at a temperature that is above that of a typical cooking process such as boiling or frying. If this limit value is exceeded, there is most likely a malfunction and/or a danger, which is communicated to the user via the warning signal.
  • the exceeding of a predetermined limit value can preferably be detected by means of the air analysis sensor arrangement and a warning signal can be output via the control device.
  • the limit value is expediently set to a measurement value that is above that of a typical cooking process such as boiling or frying. If this limit value is exceeded, there is most likely a malfunction and/or a danger, which is communicated to the user via the warning signal.
  • the extractor hood can warn of various types of smoke such as melting plastic, mist, liquid fire or cigarette smoke.
  • the distance between the The extractor hood and the hob are recorded, and the distance between the extractor hood and the hob is adjusted based on the vapor analysis.
  • the vapor capture of the extractor hood can therefore be further optimized by precisely adjusting the distance between the hob and the extractor hood.
  • suitable means for adjusting the height of the extractor hood must be provided.
  • the air analysis sensor arrangement comprises a multispectral sensor. From the measured values of the multispectral sensor, the control device can determine the exact power requirement of the fan based on the vapor analysis. This means that the extractor hood can be operated in a particularly energy-saving manner and noise emissions can be minimized excellently.
  • the detection of particles via the channels of the multispectral sensor significantly improves the planned control and determination of the cooking process.
  • the air analysis sensor arrangement comprises a VOC sensor as well as a humidity sensor and/or a temperature sensor.
  • the VOC sensor in conjunction with a humidity sensor and/or a temperature sensor makes the vapor analysis more accurate by logically linking the recorded measured values.
  • FIG. 1 a sectional view of an extractor hood according to the invention is shown.
  • the extractor hood is designated in its entirety by reference number 1.
  • the extractor hood 1 has a housing 2.
  • On the housing 2 an air inlet 3 is arranged on the bottom and air outlets 4 on the top.
  • a fan 5 is arranged above the air inlet 3, which has a motor, not shown here is driven. The motor is controlled via a control device, also not shown here.
  • a grease filter 6 is arranged between the fan 5 and the air inlet 3.
  • 4 circulating air filters 7 are arranged in the housing 2 between the fan 5 and the air outlets.
  • An air analysis sensor arrangement is placed between the grease filter 6 and the fan 5, which has a multispectral sensor 8 and/or a VOC sensor 9, and/or a humidity sensor 10 and/or a temperature sensor 11. Finally, an IR sensor 12 is provided on the underside of the housing 2, the field of view of which is directed downwards towards the hob below, not shown here.
  • the sensors (8-12) are communicatively connected to the control device so that they can transmit their measured values to the control device.
  • FIG. 2 shows schematically a flowchart for detecting the start or end of a cooking process.
  • the start of the cooking process is determined.
  • a threshold value of, for example, 40°C can be specified.
  • the formation of vapor is monitored and analyzed using one or more of the sensors 8-12.
  • the measured values of the channels of the multispectral sensor 8 are evaluated.
  • the measured values of the VOC sensor 9 are corrected here using the measured values of the humidity sensor 10 and the temperature sensor 11. This means that the temperature and humidity-related fluctuations in the measured values of the VOC sensor 9 are taken into account by a correction step k.
  • the end of the cooking process is determined.
  • FIG 3 a flowchart for carrying out a vapor analysis 13 is shown during a cooking process.
  • the hob temperature is monitored using the IR sensor 12.
  • the IR sensor 12 which is designed, for example, as an IR sensor array, can be used to determine which part of the cooking surface is currently in operation.
  • the multispectral sensor 8 and/or VOC sensor 9 continuously determines the odor pollution caused by the vapors, while the moisture sensor 10 can determine the moisture of the vapors and the temperature sensor 11 can determine the vapor temperature.
  • the single ones Measured values from the sensors (8-12) and their time course are used for the vapor analysis 13.
  • the measured values of the VOC sensor 9 are subject to relatively strong temperature and humidity-related fluctuations.
  • the measured values of the VOC sensor 9 are therefore corrected in correction step k, taking into account the measured vapor temperature and vapor moisture. Based on the vapor analysis 13, the power of the fan 5 is then adjusted using the control device. The time course of the measured values is also included in the vapor analysis 13.
  • FIG 4 a schematic flowchart of the method according to the invention for fan control is shown.
  • the extractor hood 1 is initially in standby mode SB.
  • the fan is set to a first, low power level LS1.
  • the measurement recording of all sensors (8-12) of the air analysis sensor arrangement is started. If the extractor hood is height-adjustable, it can also be moved from a standby position to an operating position.
  • the vapor analysis 13 is carried out continuously on the basis of the measured value recording. If a higher vapor load is detected, the fan 5 is set to a higher second power level LS2. The fan 5 remains in the second power level LS2 until the vapor load exceeds a threshold value. Depending on the direction in which the vapor load changes, either an even higher third power level LS3 is set or the performance of the fan 5 is reduced to the first power level LS1.
  • the threshold values can be both absolute measured values from the sensors and changes determined through time-resolved recording, i.e. the increase or decrease in the measured values.
  • the procedure proceeds exactly as in the second power level LS2. So that the fan 5 is switched to a fourth power level LS4 if the vapor load increases further and back to the LS4 if the vapor load is reduced second power stage LS2 is switched.
  • the fan it is possible for the fan to have additional power levels or a continuously variable power setting. If there is a strong short-term change in the formation of vapor, it is also possible that power levels are skipped, for example directly from the first power level LS1 to the fourth power level LS4.
  • the hob temperature is monitored at any time and at every power level using the IR sensor 12. As soon as a limit temperature is exceeded, a warning signal WS is issued.
  • the fan is either switched directly to standby mode SB or first to a run-on NL and then switches to standby mode SB.
  • the IR sensor 12 detects a hob temperature of 80 - 100 °C.
  • the humidity sensor 10 detects a humidity of 80 - 100%.
  • the VOC sensor detects only little pollution due to the pure water vapor.
  • the control device can then derive the cooking process “boiling water” and select a power level of the fan 5 that is suitable for this process.
  • the low exposure to water vapor can be detected via the multispectral sensor of the air analysis sensor arrangement and the control device can then safely derive the cooking process “water boiling” from the sensor data obtained and select a power level of the fan 5 suitable for this process.
  • the IR sensor detects a hob temperature in the range of 150 - 250°C.
  • the humidity sensor 10 on the other hand, only detects relatively little humidity.
  • the VOC sensor 9 detects a high load.
  • the control device can derive the “roasting” cooking process from the sensor data obtained and can select the appropriate power level of the fan for this purpose.
  • the high load can be detected via the multispectral sensor of the air analysis sensor arrangement and the control device can then reliably derive the “roasting” cooking process from the sensor data obtained and select a power level of the fan 5 that is suitable for this process.
  • the IR sensor 12 only detects a temperature of less than 40°C.
  • the humidity sensor 10 only detects low humidity.
  • the VOC sensor 9 detects a high concentration.
  • the VOC sensor 9 and the moisture sensor 10 therefore detect similar values to those in the “roasting” process.
  • the control device can deduce that no cooking process has been started.
  • the fan 5 remains in standby mode SB.
  • the high concentration can be detected via the multispectral sensor of the air analysis sensor arrangement and the control device can then safely derive the “hob cleaning” process from the sensor data obtained and select the standby mode SB.
  • the power level of the fan 5 can also be made dependent on the number of cookware and their position using the IR sensor 12.
  • the IR sensor 12 can also be used to control other functions of the extractor hoods, for example to turn the extractor hood on and off, to switch on and off the Lighting, for adjusting the height of the extractor hood relative to the hob.
  • the measurement data obtained by the sensors of a large number of extractor hoods can also be compiled centrally in a database. Further insights can then be drawn from the collected measurement data in order to further optimize the vapor analysis, process detection and ultimately the fan control.
EP23178690.6A 2022-06-28 2023-06-12 Procédé de commande automatisée d'une hotte aspirante et hotte aspirante conçue pour mettre en uvre le procédé Pending EP4299990A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102022116083.1A DE102022116083A1 (de) 2022-06-28 2022-06-28 Verfahren zur automatisierten Steuerung einer Dunstabzugshaube und Dunstabzugshaube eingerichtet zur Durchführung des Verfahrens

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EP4299990A1 true EP4299990A1 (fr) 2024-01-03

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EP23178690.6A Pending EP4299990A1 (fr) 2022-06-28 2023-06-12 Procédé de commande automatisée d'une hotte aspirante et hotte aspirante conçue pour mettre en uvre le procédé

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EP (1) EP4299990A1 (fr)
DE (1) DE102022116083A1 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3039246A1 (de) 1980-10-17 1982-05-19 Gebrüder Mayer KG, 5760 Arnsberg Dunstabzugshaube, insbesondere zum einsatz in kuechen
US20060278216A1 (en) * 2005-06-08 2006-12-14 Gagas John M Range hood
US20070062513A1 (en) * 2005-09-21 2007-03-22 Gagas John M Cooking system with ventilator and blower
DE102012220598A1 (de) 2012-11-13 2014-05-28 BSH Bosch und Siemens Hausgeräte GmbH Überwachungssystem und Verfahren zur Überwachung und Einstellung von Luftparametern in einem Raum, Dunstabzugsvorrichtung zur Verwendung in einem Überwachungssystem
WO2015085864A1 (fr) * 2013-12-09 2015-06-18 罗瑞真 Appareil et procédé de purification d'air
DE102018201047A1 (de) 2018-01-24 2019-07-25 BSH Hausgeräte GmbH Verfahren zum Betrieb mindestens einer Funktion eines Haushaltsgerätes und Steuervorrichtung
DE102018128934A1 (de) 2018-11-19 2020-05-20 minEnergy GmbH Dunstabzugshaube
CN111288515A (zh) * 2020-01-23 2020-06-16 深圳市大拿科技有限公司 抽油烟机控制方法及相关产品
EP4027061A1 (fr) 2021-01-12 2022-07-13 Electrolux Appliances Aktiebolag Dispositif d'extraction pour l'élimination d'air, appareil combiné et bras d'aspiration

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3039246A1 (de) 1980-10-17 1982-05-19 Gebrüder Mayer KG, 5760 Arnsberg Dunstabzugshaube, insbesondere zum einsatz in kuechen
US20060278216A1 (en) * 2005-06-08 2006-12-14 Gagas John M Range hood
US20070062513A1 (en) * 2005-09-21 2007-03-22 Gagas John M Cooking system with ventilator and blower
DE102012220598A1 (de) 2012-11-13 2014-05-28 BSH Bosch und Siemens Hausgeräte GmbH Überwachungssystem und Verfahren zur Überwachung und Einstellung von Luftparametern in einem Raum, Dunstabzugsvorrichtung zur Verwendung in einem Überwachungssystem
WO2015085864A1 (fr) * 2013-12-09 2015-06-18 罗瑞真 Appareil et procédé de purification d'air
DE102018201047A1 (de) 2018-01-24 2019-07-25 BSH Hausgeräte GmbH Verfahren zum Betrieb mindestens einer Funktion eines Haushaltsgerätes und Steuervorrichtung
DE102018128934A1 (de) 2018-11-19 2020-05-20 minEnergy GmbH Dunstabzugshaube
CN111288515A (zh) * 2020-01-23 2020-06-16 深圳市大拿科技有限公司 抽油烟机控制方法及相关产品
EP4027061A1 (fr) 2021-01-12 2022-07-13 Electrolux Appliances Aktiebolag Dispositif d'extraction pour l'élimination d'air, appareil combiné et bras d'aspiration

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