EP2746681A1 - Extractor hood and method for controlling the operation of an extractor hood - Google Patents

Extractor hood and method for controlling the operation of an extractor hood Download PDF

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Publication number
EP2746681A1
EP2746681A1 EP13005692.2A EP13005692A EP2746681A1 EP 2746681 A1 EP2746681 A1 EP 2746681A1 EP 13005692 A EP13005692 A EP 13005692A EP 2746681 A1 EP2746681 A1 EP 2746681A1
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EP
European Patent Office
Prior art keywords
cooking
temperature
fan device
detected
extractor hood
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Granted
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EP13005692.2A
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German (de)
French (fr)
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EP2746681B1 (en
Inventor
Bruno Fuhge
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Diehl AKO Stiftung and Co KG
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Diehl AKO Stiftung and Co KG
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    • 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 present invention relates to an extractor hood and a method for controlling the operation of an extractor hood.
  • the DE 25 18 750 B2 and the DE 39 22 090 A1 describe in each case an extractor hood over a cooking stove, in which a speed of an electric motor of a fan is continuously regulated in dependence on a temperature of cooking fumes.
  • the control device is brought into standby position as soon as a cooking plate of the cooking range is switched on.
  • the temperature is monitored by means of at least one temperature sensor in the form of an NTC resistor in the extractor and at least one other temperature sensor in the form of an NTC resistor outside the housing of the hood.
  • the cooking fumes can also by means of infrared sensors (see. DE 41 05 807 A1 ), Ultrasonic sensors (cf. EP 1 001 226 B1 ), Laser sensors (see. DE 10 2005 015 754 A1 ) or gas sensors (cf. EP 1 452 804 A1 ) are recorded and evaluated.
  • infrared sensors see. DE 41 05 807 A1
  • Ultrasonic sensors cf. EP 1 001 226 B1
  • Laser sensors see. DE 10 2005 015 754 A1
  • gas sensors cf. EP 1 452 804 A1
  • the invention has for its object to provide an improved extractor hood and an improved method for controlling the operation of a hood with an automatic switch on and automatic power control.
  • the extractor hood of the invention comprises a fan device for extracting exhaust air of a cooking appliance arranged under the hood with at least one cooking area, a temperature detecting device for detecting a temperature of at least one cooking area of the cooking appliance and a cooking drough detection device for detecting cooking fumes in the extracted by the fan device exhaust air.
  • a control device of the extractor hood is designed to switch on the fan device as a function of a temperature detected by the temperature detection device and to control a suction power of the fan device as a function of cooking fumes detected by the cooking dusk detection device.
  • the different measures for automatically switching on the fan device and for controlling the suction of the fan device allow a very fast and reliable response of the hood on / on cooking utensils cooking.
  • the temperature monitoring of the at least one cooking area of the cooking appliance allows for a very quick turn on the fan device after the cooking appliance has been put into operation, ie as soon as there is a possibility that cooking fumes are produced on the cooking appliance. Emerging cooking fumes can thus be directed very quickly to the extractor hood and in particular to their cooking datalogger.
  • the Kochdunster ventes can capture the cooking fumes very quickly and cause a corresponding power control of the fan device in this way.
  • the advantages of a usually relatively coarse temperature detection of the cooking areas and a relatively accurate Kochdunster charged are combined with each other in the hood according to the invention.
  • this hood requires no wired or wireless coupling with the cooking appliance in order to realize this automatic, so that the hood must have no special interface.
  • the cooker hood and cooking appliance can thus be designed and installed as independent appliances.
  • the cooking appliance which is arranged under the extractor hood, is in particular a heat-generating cooking appliance, preferably a hob, and in particular an electronic cooking appliance.
  • the cooking appliance has in particular one, two, three, four or more cooking areas, which are arranged side by side.
  • the cooking areas correspond in particular to the cooking places or cooking plates specified by the cooking appliance, but may also comprise two or more such cooking places or cooking plates.
  • the extractor hood according to the invention has a fan device.
  • the term fan device is intended in this context to refer to any type of device which is suitable for generating an exhaust air flow from the cooking appliance under the extractor hood up into the extractor hood.
  • the exhaust air flow is preferably through an exhaust duct further from the extractor hood moved out again.
  • the fan device preferably has at least one fan, fan or the like.
  • the fan device preferably has at least one electric motor for driving the fan, fan, etc.
  • the electric motor of the fan device is preferably controlled by the control device of the hood, ie in particular switched on and regulated in its speed.
  • the extractor hood according to the invention further comprises a temperature detecting device for detecting a temperature of at least one cooking region of the cooking appliance. That The temperature detection device is part of the hood and integrated into or connected to this, so that the hood does not need an interface to the cooking appliance.
  • the temperature detection device is in particular designed to detect the temperatures of all cooking areas of the cooking appliance.
  • the temperature detection device preferably has one, two, three, four or more temperature sensors for detecting a temperature of a cooking area of the cooking appliance. These temperature sensors are preferably arranged outside or at least in an edge region of an exhaust air flow to the extractor hood.
  • the temperature detection device preferably also has one, two, three, four or more temperature sensors for detecting an ambient temperature of the extractor hood.
  • the control device of the extractor hood switches on the fan device of the extractor hood as a function of a temperature detected by this temperature detection device.
  • a dependence on a temperature value of a cooking area, a mean temperature value of all cooking areas, a temporal temperature gradient of one of the aforementioned temperature values, a difference value between one of the aforementioned temperature values and an ambient temperature of the extractor hood, a temporal temperature gradient shall be considered in this context one of the aforementioned difference values and the like are understood.
  • the control device switches on the fan device, in particular, as soon as the respective measured value reaches or exceeds a predetermined threshold, preferably for at least a predetermined period of time.
  • the extractor hood according to the invention has a cooking drough detection device for detecting cooking fumes in the extracted by means of the fan device exhaust air.
  • the cooking dusk detection device preferably has one, two, three or more cooking dwell detection sensors.
  • This Kochdunster linearssensoren can be connected upstream and / or downstream in the exhaust air flow of the fan device.
  • This Kochdunster naturally occurring in the exhaust air flow and a filter device, if present, upstream and / or downstream.
  • the term cooker detection sensor in this context is intended to denote any type of device which is suitable for detecting the presence and in particular also the quantity and / or the type of cooking fumes.
  • cookware detection sensors include infrared sensors, ultrasonic sensors, laser sensors, gas sensors, and the like.
  • the control device of the extractor hood controls a suction of the fan device in dependence on detected by the cooking dusk detection device cooking fumes. This is to be understood in this context, in particular a dependence on a Kochdunstmenge, cooking vapor composition, cooking steam temperature, Kochdunstart, etc.
  • the control of the suction of the fan device is preferably carried out continuously or in predetermined power levels.
  • the control of the suction power comprises, in particular, an upshift, downshift and keeping constant the suction power or the power level of the fan device.
  • the extraction capacities or performance levels of the fan device are preferably controlled by controlling the rotational speed of an electric motor and / or a fan of the fan device.
  • the temperature detection device has at least one infrared sensor for detecting a Temperature of at least one cooking area of the cooking appliance on.
  • the non-contact temperature detection of the infrared sensor is a particularly simple and at the same time sufficiently accurate measurement method.
  • the achievable accuracy of the temperature detection of at least one cooking area is sufficient for the hood of the invention, since the temperature detection is only to turn on the fan device, not However, a needs-based control of the suction should be done.
  • the control device is designed to switch on the fan device as a function of a temperature detected by the temperature detection device at a low power level.
  • the above statements apply accordingly. Turning on the fan device at a low power level initially causes only low power consumption and low noise. Only when using the Kochdunster linears adopted actually cooking fumes are detected in the extracted exhaust air, the fan device is switched up. The low power level corresponds in particular to a lowest power level of the fan device.
  • the temperature detection device is designed to detect the temperatures of several cooking areas of the cooking appliance separately; the fan device is designed to generate separate exhaust air streams from the individual cooking zones of the cooking appliance; and the control device is designed to control the separate exhaust air flows of the fan device as a function of the temperatures detected by the temperature detection device.
  • the control device is designed to control the separate exhaust air flows of the fan device as a function of the temperatures detected by the temperature detection device.
  • control device is designed to switch off the fan device as a function of a temperature detected by the temperature detection device, as a function of cooking fumes detected by the cooking datalogger, depending on time and / or by manual operation.
  • the hood is additionally equipped with an operating device, via which a user can turn on the fan device manually and / or manually select the power levels of the fan device.
  • the inventive method for controlling the operation of a cooker hood which is arranged above a cooking appliance with at least one cooking area, comprising the steps of detecting a temperature of at least one cooking area of the cooking appliance; turning on a fan device as a function of the detected temperature; detecting cooking fumes in the extracted by means of the fan device exhaust air; and controlling a suction power of the fan device depending on the detected cooking fumes.
  • the fan device is switched on as a function of the detected temperature at a low power level.
  • the temperatures of several cooking areas of the cooking appliance are detected separately and in Depending on the detected temperatures separate exhaust air streams of the fan device controlled by individual cooking zones of the cooking appliance.
  • the fan device of the extractor fan depending on a detected temperature of at least one cooking area of the cooking appliance, depending on detected cooking fumes, time-dependent and / or switched off by a manual operation.
  • FIG. 1 a schematic representation of the structure of an embodiment of an extractor hood according to the present invention.
  • FIG. 1 exemplified an embodiment of an extractor hood according to the present invention is illustrated.
  • the extractor hood 14 is arranged in the usual way above a hob 10 with a plurality of cooking zones 12.
  • the cooking areas 12 may have the same or different sizes and shapes.
  • the cooking zones 12 can be operated independently of each other, i. individually switched on and regulated in their heat outputs.
  • each of the four cooking zones 12 simultaneously forms a cooking area in the context of the invention.
  • two cooking zones 12 may be combined to form a cooking area.
  • the extractor hood 14 has a fan device 16 with a fan in an exhaust duct 17.
  • the fan is driven by an electric motor (not shown) of the fan device 16.
  • the driven fan generates an exhaust air flow from the cooking zones 12 of the hob 10 upwards into the extractor hood 14 and further into the exhaust air duct 17.
  • the exhaust air for example, led directly out of a building or forwarded to an exhaust system.
  • a filter device (not shown) is arranged at the underside of the extractor hood facing the cooking zones 12.
  • the filter device is, for example, detachably mounted so that it can be replaced or cleaned if necessary.
  • infrared sensors 18 are arranged in the area of the lower edge of the extractor hood 14.
  • the four infrared sensors together form a temperature detection device in the sense of the invention.
  • the infrared sensors 18 are each formed and aligned to detect a temperature of a cooking position 12 of the hob 10. They are preferably in the peripheral edge region of the hood 14 and thus positioned as possible outside the exhaust air flow. If a hotplate 12 is put into operation, the temperature of the hotplate 12 and of the cookware positioned thereon increases, which can be detected by the infrared sensors 18.
  • additional temperature sensors may additionally be provided on the extractor hood 14, which detect the temperature of the surroundings of the extractor hood.
  • control device 24 of the extractor hood 14.
  • control device 24 is preferably integrated in the extractor hood 14.
  • At least one cooker sensor 20 for example in the form of an ultrasonic sensor, an infrared sensor, a laser sensor or the like in the hood 14 arranged.
  • This at least one cooking vapor sensor 20 is intended to detect the presence and concentration of cooking fumes in the exhaust air stream of the extractor hood 14.
  • At least one further cooker sensor 22 for example in the form of a gas sensor or the like in the exhaust duct 17 of the hood 14 is arranged.
  • This at least one further cooker sensor 22 is intended to detect the composition of cooking fumes in the exhaust air stream of the extractor hood 14.
  • the at least one cooking-steam sensor 20 and the at least one further cooking-steam sensor 22 form a cooking-steam detecting device of the invention.
  • this cooking dusk detection device can also have only the at least one cooking-steam sensor 20 or only the at least one further cooking-steam sensor 22.
  • the at least one cooking-steam sensor 20 and the at least one further cooking-steam sensor 22 are likewise connected to the control device 24 of the extractor hood 14.
  • the control device 24 of the extractor hood 14 controls the fan device 16 as a function of the received measurement signals of the temperature detection device and the cooking datalogger as follows.
  • the control device 24 switches on the electric motor of the fan device 16 at a low power level.
  • the predetermined threshold value for the temperature is significantly above room temperature, for example 40 ° C, 45 ° C, 50 ° C, 55 ° C, 60 ° C or more.
  • a mean temperature value of all cooking zones 12, a maximum temperature value of all cooking zones 12, a difference between the temperature of a cooking zone 12 and an ambient temperature, a difference between the mean temperature of all cooking zones 12 and a middle Ambient temperature, a difference value between the maximum temperature of all cooking zones 12 and a mean or maximum ambient temperature or the like with a corresponding predetermined threshold value are compared. Furthermore, it is also possible to compare a temporal temperature gradient of the aforementioned measured values with a corresponding predetermined threshold value.
  • the fan device 16 is turned on by the controller 24 only when the predetermined threshold is reached or exceeded for a predetermined period of time. In this way, for example, measurement errors can be compensated for and a constant switching on and off of the fan device 16 can be avoided in the threshold range of the threshold.
  • the fan device 16 If the fan device 16 is now switched on with a low power level, it generates a weak exhaust air flow from the cooking areas 12 upwards into the extractor hood 14. The sensors 20, 22 of the cooking dusk detection device then detect cooking fumes in this exhaust air flow. If no cooking fumes are present or detectable in the exhaust air flow, then the fan device 16 continues to operate at a low power level.
  • the control device 24 controls the suction power of the fan device 16 or the speed of the electric motor of the fan according to the detected cooking fumes, for example, continuously or in predetermined Power levels. In this case, the suction power is increased, lowered or substantially kept constant in accordance with the measured values of the cooking dusk detection device.
  • the hood 14 may optionally be additionally equipped with an operating device. This operating device is then also connected to the control device 2 4. Via the operating device, a user can manually switch on the fan device 16 if necessary and manually adjust its power level. The manual actuation of the extractor hood 14 may have priority over the automatic control described above.
  • the shutdown of the hood can be done in various ways.
  • the control device 24 can switch off the fan device 16 of the extractor hood 14 again if the sensors 20, 22 of the cooking datalogger no longer detect cooking fumes when the temperature detected by the infrared sensors 18 of the temperature detection device drops below the predetermined threshold again manual actuation of a corresponding operating device by a user, upon reaching a predetermined operating time of the fan device 16 and the like.
  • combinations of these conditions are conceivable and preferably the respective conditions must be met for a predetermined period of time.
  • the temperature detection device is designed so that it can detect the temperatures of the individual cooking zones 12 of the hob 10 separately.
  • the fan device 16 it is conceivable, with the fan device 16, to generate an exhaust air stream predominantly from the respectively used hotplate 12.
  • the fan device 16 has for this purpose, for example, a plurality of fans and / or louvers, which can be controlled by the control device 24.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ventilation (AREA)

Abstract

The hood (14) has a fan device (16) for sucking the exhaust air from a cooking apparatus (10) with a cooking area (12). A temperature detecting unit (18) detects a temperature of cooking area of the cooking apparatus. The cooking vapor detection units (20,22) detect the cooking vapor in the sucked air sucked by a fan device. A control unit (24) for switching ON the fan device in response to detected temperature and controlling the suction power of the fan device based on the detected cooking vapor in sucked air. An independent claim is included for a method for controlling operation of fume extractor hood.

Description

Die vorliegende Erfindung betrifft eine Dunstabzugshaube und ein Verfahren zum Steuern des Betriebs einer Dunstabzugshaube.The present invention relates to an extractor hood and a method for controlling the operation of an extractor hood.

Es sind im Stand der Technik verschiedene Maßnahmen zum Einschalten und zur Leistungsregelung einer Lüftervorrichtung einer Dunstabzugshaube bekannt. Neben einem manuellen Einschalten und Auswählen einer Leistungsstufe über eine geeignete Bedienvorrichtung an der Dunstabzugshaube sind insbesondere verschiedene automatische Steuerungsverfahren bekannt.Various measures for switching on and for regulating the power of a fan device of an extractor hood are known in the prior art. In addition to a manual switch on and selecting a power level via a suitable control device on the hood particular, various automatic control methods are known.

Die DE 25 18 750 B2 und die DE 39 22 090 A1 beschreiben jeweils eine Dunstabzugshaube über einem Kochherd, bei welcher eine Drehzahl eines Elektromotors eines Ventilators in Abhängigkeit von einer Temperatur der Kochdünste stufenlos geregelt wird. Die Steuereinrichtung wird hierzu in Bereitschaftsstellung gebracht, sobald eine Kochplatte des Kochherdes eingeschaltet wird. Die Temperaturüberwachung erfolgt mittels wenigstens eines Temperaturfühlers in Form eines NTC-Widerstandes im Dunstabzugsbereich und wenigstens eines weiteren Temperaturfühlers in Form eines NTC-Widerstandes außen am Gehäuse der Dunstabzugshaube.The DE 25 18 750 B2 and the DE 39 22 090 A1 describe in each case an extractor hood over a cooking stove, in which a speed of an electric motor of a fan is continuously regulated in dependence on a temperature of cooking fumes. For this purpose, the control device is brought into standby position as soon as a cooking plate of the cooking range is switched on. The temperature is monitored by means of at least one temperature sensor in the form of an NTC resistor in the extractor and at least one other temperature sensor in the form of an NTC resistor outside the housing of the hood.

Zum Zwecke der Regelung der Leistungsstufe des Ventilatormotors einer Dunstabzugshaube können die Kochdünste außerdem mittels Infrarot-Sensoren (vgl. DE 41 05 807 A1 ), Ultraschallsensoren (vgl. EP 1 001 226 B1 ), Lasersensoren (vgl. DE 10 2005 015 754 A1 ) oder Gassensoren (vgl. EP 1 452 804 A1 ) erfasst und ausgewertet werden.For the purpose of regulating the power level of the fan motor of a cooker hood, the cooking fumes can also by means of infrared sensors (see. DE 41 05 807 A1 ), Ultrasonic sensors (cf. EP 1 001 226 B1 ), Laser sensors (see. DE 10 2005 015 754 A1 ) or gas sensors (cf. EP 1 452 804 A1 ) are recorded and evaluated.

Der Erfindung liegt die Aufgabe zugrunde, eine verbesserte Dunstabzugshaube und ein verbessertes Verfahren zum Steuern des Betriebs einer Dunstabzugshaube mit einem automatischen Einschalten und einer automatischen Leistungsregelung zu schaffen.The invention has for its object to provide an improved extractor hood and an improved method for controlling the operation of a hood with an automatic switch on and automatic power control.

Diese Aufgabe wird gelöst durch eine Dunstabzugshaube mit den Merkmalen des Anspruchs 1 bzw. ein Verfahren zum Steuern des Betriebs einer Dunstabzugshaube mit den Merkmalen des Anspruchs 6. Besonders bevorzugte Ausgestaltungen und Weiterbildungen der Erfindung sind Gegenstand der Unteransprüche.This object is achieved by a fume hood with the features of claim 1 and a method for controlling the operation of a fume hood with the features of claim 6. Particularly preferred embodiments and modifications of the invention are the subject of the dependent claims.

Die Dunstabzugshaube der Erfindung weist eine Lüftervorrichtung zum Absaugen von Abluft eines unter der Dunstabzugshaube angeordneten Kochgerätes mit wenigstens einem Kochbereich, eine Temperaturerfassungseinrichtung zum Erfassen einer Temperatur wenigstens eines Kochbereichs des Kochgerätes und eine Kochdunsterfassungseinrichtung zum Erfassen von Kochdünsten in der mittels der Lüftervorrichtung abgesaugten Abluft auf. Eine Steuereinrichtung der Dunstabzugshaube ist ausgebildet zum Einschalten der Lüftervorrichtung in Abhängigkeit von einer durch die Temperaturerfassungseinrichtung erfassten Temperatur und zum Steuern einer Absaugleistung der Lüftervorrichtung in Abhängigkeit von durch die Kochdunsterfassungseinrichtung erfassten Kochdünsten.The extractor hood of the invention comprises a fan device for extracting exhaust air of a cooking appliance arranged under the hood with at least one cooking area, a temperature detecting device for detecting a temperature of at least one cooking area of the cooking appliance and a cooking drough detection device for detecting cooking fumes in the extracted by the fan device exhaust air. A control device of the extractor hood is designed to switch on the fan device as a function of a temperature detected by the temperature detection device and to control a suction power of the fan device as a function of cooking fumes detected by the cooking dusk detection device.

Bei dieser Dunstabzugshaube erfolgen sowohl das Einschalten der Lüftervorrichtung als auch das Steuern der Absaugleistung der Lüftervorrichtung automatisch.In this hood, both turning on the fan device and controlling the suction of the fan device automatically done.

Die unterschiedlichen Maßnahmen zum automatischen Einschalten der Lüftervorrichtung und zum Steuern der Absaugleistung der Lüftervorrichtung ermöglichen eine sehr schnelle und zuverlässige Reaktion der Dunstabzugshaube auf/an am Kochgerät entstehende Kochdünste. Die Temperaturüberwachung des wenigstens eines Kochbereichs des Kochgerätes ermöglicht ein sehr schnelles Einschalten der Lüftervorrichtung, nachdem das Kochgerät in Betrieb genommen worden ist, d.h. sobald die Möglichkeit besteht, dass an dem Kochgerät Kochdünste entstehen. Entstehende Kochdünste können somit sehr rasch zur Dunstabzugshaube und insbesondere auch zu deren Kochdunsterfassungseinrichtung geleitet werden. Die Kochdunsterfassungseinrichtung kann auf diese Weise die Kochdünste sehr schnell erfassen und eine entsprechende Leistungsregelung der Lüftervorrichtung bewirken. Mit anderen Worten werden in der erfindungsgemäßen Dunstabzugshaube die Vorteile einer in der Regel nur relativ groben Temperaturerfassung der Kochbereiche und einer relativ genauen Kochdunsterfassung miteinander kombiniert.The different measures for automatically switching on the fan device and for controlling the suction of the fan device allow a very fast and reliable response of the hood on / on cooking utensils cooking. The temperature monitoring of the at least one cooking area of the cooking appliance allows for a very quick turn on the fan device after the cooking appliance has been put into operation, ie as soon as there is a possibility that cooking fumes are produced on the cooking appliance. Emerging cooking fumes can thus be directed very quickly to the extractor hood and in particular to their cooking datalogger. The Kochdunsterfassungseinrichtung can capture the cooking fumes very quickly and cause a corresponding power control of the fan device in this way. In other words, the advantages of a usually relatively coarse temperature detection of the cooking areas and a relatively accurate Kochdunsterfassung are combined with each other in the hood according to the invention.

Auch erfordert diese Dunstabzugshaube keine leitungsgebundene oder drahtlose Kopplung mit dem Kochgerät, um diese Automatik realisieren zu können, sodass die Dunstabzugshaube über keine spezielle Schnittstelle verfügen muss. Die Dunstabzugshaube und das Kochgerät können somit als voneinander unabhängige Geräte konzipiert und installiert werden.Also, this hood requires no wired or wireless coupling with the cooking appliance in order to realize this automatic, so that the hood must have no special interface. The cooker hood and cooking appliance can thus be designed and installed as independent appliances.

Bei dem Kochgerät, welches unter der Dunstabzugshaube angeordnet ist, handelt es sich insbesondere um ein Wärme erzeugendes Kochgerät, vorzugsweise um ein Kochfeld, und insbesondere um ein elektronisches Kochgerät. Das Kochgerät weist insbesondere einen, zwei, drei, vier oder mehr Kochbereiche auf, welche nebeneinander angeordnet sind. Die Kochbereiche entsprechen dabei insbesondere den durch das Kochgerät vorgegebenen Kochstellen oder Kochplatten, können aber auch zwei oder mehr solcher Kochstellen oder Kochplatten umfassen.The cooking appliance, which is arranged under the extractor hood, is in particular a heat-generating cooking appliance, preferably a hob, and in particular an electronic cooking appliance. The cooking appliance has in particular one, two, three, four or more cooking areas, which are arranged side by side. The cooking areas correspond in particular to the cooking places or cooking plates specified by the cooking appliance, but may also comprise two or more such cooking places or cooking plates.

Die erfindungsgemäße Dunstabzugshaube weist eine Lüftervorrichtung auf. Der Begriff Lüftervorrichtung soll in diesem Zusammenhang jede Art von Vorrichtung bezeichnen, die geeignet ist, einen Abluftstrom von dem Kochgerät unter der Dunstabzugshaube nach oben in die Dunstabzugshaube hinein zu erzeugen. Der Abluftstrom wird vorzugsweise durch einen Abluftkanal weiter aus der Dunstabzugshaube wieder heraus befördert. Die Lüftervorrichtung weist vorzugsweise wenigstens einen Lüfter, Ventilator oder dergleichen auf. Die Lüftervorrichtung weist vorzugsweise wenigstens einen Elektromotor zum Antreiben des Lüfters, Ventilators, etc. auf. Der Elektromotor der Lüftervorrichtung wird vorzugsweise von der Steuereinrichtung der Dunstabzugshaube angesteuert, d.h. insbesondere eingeschaltet und in seiner Drehzahl geregelt.The extractor hood according to the invention has a fan device. The term fan device is intended in this context to refer to any type of device which is suitable for generating an exhaust air flow from the cooking appliance under the extractor hood up into the extractor hood. The exhaust air flow is preferably through an exhaust duct further from the extractor hood moved out again. The fan device preferably has at least one fan, fan or the like. The fan device preferably has at least one electric motor for driving the fan, fan, etc. The electric motor of the fan device is preferably controlled by the control device of the hood, ie in particular switched on and regulated in its speed.

Die erfindungsgemäße Dunstabzugshaube weist weiter eine Temperaturerfassungseinrichtung zum Erfassen einer Temperatur wenigstens eines Kochbereichs des Kochgerätes auf. D.h. die Temperaturerfassungseinrichtung ist Bestandteil der Dunstabzugshaube und in diese integriert oder mit dieser verbunden, sodass die Dunstabzugshaube keine Schnittstelle zum Kochgerät benötigt. Die Temperaturerfassungseinrichtung ist insbesondere ausgebildet, um die Temperaturen aller Kochbereiche des Kochgerätes zu erfassen. Die Temperaturerfassungseinrichtung weist vorzugsweise einen, zwei, drei, vier oder mehr Temperatursensoren zum Erfassen einer Temperatur eines Kochbereichs des Kochgerätes auf. Diese Temperatursensoren sind vorzugsweise außerhalb oder zumindest in einem Randbereich eines Abluftstroms an der Dunstabzugshaube angeordnet. Darüber hinaus weist die Temperaturerfassungseinrichtung vorzugsweise auch einen, zwei, drei, vier oder mehr Temperatursensoren zum Erfassen einer Umgebungstemperatur der Dunstabzugshaube auf.The extractor hood according to the invention further comprises a temperature detecting device for detecting a temperature of at least one cooking region of the cooking appliance. That The temperature detection device is part of the hood and integrated into or connected to this, so that the hood does not need an interface to the cooking appliance. The temperature detection device is in particular designed to detect the temperatures of all cooking areas of the cooking appliance. The temperature detection device preferably has one, two, three, four or more temperature sensors for detecting a temperature of a cooking area of the cooking appliance. These temperature sensors are preferably arranged outside or at least in an edge region of an exhaust air flow to the extractor hood. In addition, the temperature detection device preferably also has one, two, three, four or more temperature sensors for detecting an ambient temperature of the extractor hood.

Die Steuereinrichtung der Dunstabzugshaube schaltet die Lüftervorrichtung der Dunstabzugshaube in Abhängigkeit von einer durch diese Temperaturerfassungseinrichtung erfassten Temperatur ein. Hierunter soll in diesem Zusammenhang insbesondere eine Abhängigkeit von einem Temperaturwert eines Kochbereichs, einem mittleren Temperaturwert aller Kochbereiche, einem maximalen Temperaturwert aller Kochbereiche, einem zeitlichen Temperaturgradienten eines der vorgenannten Temperaturwerte, einem Differenzwert zwischen einem der vorgenannten Temperaturwerte und einer Umgebungstemperatur der Dunstabzugshaube, einem zeitlichen Temperaturgradienten eines der vorgenannten Differenzwerte und dergleichen verstanden werden. Die Steuereinrichtung schaltet die Lüftervorrichtung insbesondere ein, sobald der jeweilige Messwert einen vorbestimmten Schwellenwert erreicht bzw. überschreitet, vorzugsweise für wenigstens eine vorbestimmte Zeitdauer erreicht bzw. überschreitet.The control device of the extractor hood switches on the fan device of the extractor hood as a function of a temperature detected by this temperature detection device. In this context, a dependence on a temperature value of a cooking area, a mean temperature value of all cooking areas, a temporal temperature gradient of one of the aforementioned temperature values, a difference value between one of the aforementioned temperature values and an ambient temperature of the extractor hood, a temporal temperature gradient shall be considered in this context one of the aforementioned difference values and the like are understood. The control device switches on the fan device, in particular, as soon as the respective measured value reaches or exceeds a predetermined threshold, preferably for at least a predetermined period of time.

Die erfindungsgemäße Dunstabzugshaube weist eine Kochdunsterfassungseinrichtung zum Erfassen von Kochdünsten in der mittels der Lüftervorrichtung abgesaugten Abluft auf. Die Kochdunsterfassungseinrichtung weist vorzugsweise einen, zwei, drei oder mehr Kochdunsterfassungssensoren auf. Diese Kochdunsterfassungssensoren können im Abluftstrom der Lüftervorrichtung vorgeschaltet und/oder nachgeschaltet sein. Diese Kochdunsterfassungssensoren können im Abluftstrom auch einer Filtervorrichtung, falls vorhanden, vorgeschaltet und/oder nachgeschaltet sein. Der Begriff Kochdunsterfassungssensor soll in diesem Zusammenhang jede Art einer Vorrichtung bezeichnen, welche geeignet ist, das Vorhandensein und insbesondere auch die Menge und/oder die Art von Kochdünsten zu erfassen. Zu den geeigneten Kochdunsterfassungssensoren zählen insbesondere Infrarot-Sensoren, Ultraschallsensoren, Lasersensoren, Gassensoren und dergleichen Sensoren.The extractor hood according to the invention has a cooking drough detection device for detecting cooking fumes in the extracted by means of the fan device exhaust air. The cooking dusk detection device preferably has one, two, three or more cooking dwell detection sensors. This Kochdunsterfassungssensoren can be connected upstream and / or downstream in the exhaust air flow of the fan device. This Kochdunsterfassungssensoren in the exhaust air flow and a filter device, if present, upstream and / or downstream. The term cooker detection sensor in this context is intended to denote any type of device which is suitable for detecting the presence and in particular also the quantity and / or the type of cooking fumes. In particular, cookware detection sensors include infrared sensors, ultrasonic sensors, laser sensors, gas sensors, and the like.

Die Steuereinrichtung der Dunstabzugshaube steuert eine Absaugleistung der Lüftervorrichtung in Abhängigkeit von durch die Kochdunsterfassungseinrichtung erfassten Kochdünsten. Hierunter soll in diesem Zusammenhang insbesondere eine Abhängigkeit von einer Kochdunstmenge, Kochdunstzusammensetzung, Kochdunsttemperatur, Kochdunstart, etc. verstanden werden. Die Steuerung der Absaugleistung der Lüftervorrichtung erfolgt vorzugsweise stufenlos oder in vorgegebenen Leistungsstufen. Das Steuern der Absaugleistung umfasst in diesem Zusammenhang insbesondere ein Hochschalten, Herunterschalten und Konstanthalten der Absaugleistung bzw. der Leistungsstufe der Lüftervorrichtung. Die Absaugleistungen bzw. Leistungsstufen der Lüftervorrichtung werden dabei vorzugsweise durch ein Steuern der Drehzahl eines Elektromotors und/odereines Ventilators der Lüftervorrichtung gesteuert.The control device of the extractor hood controls a suction of the fan device in dependence on detected by the cooking dusk detection device cooking fumes. This is to be understood in this context, in particular a dependence on a Kochdunstmenge, cooking vapor composition, cooking steam temperature, Kochdunstart, etc. The control of the suction of the fan device is preferably carried out continuously or in predetermined power levels. In this context, the control of the suction power comprises, in particular, an upshift, downshift and keeping constant the suction power or the power level of the fan device. The extraction capacities or performance levels of the fan device are preferably controlled by controlling the rotational speed of an electric motor and / or a fan of the fan device.

In einer bevorzugten Ausgestaltung der Erfindung weist die Temperaturerfassungseinrichtung wenigstens einen Infrarot-Sensor zum Erfassen einer Temperatur wenigstens eines Kochbereichs des Kochgerätes auf. Die berührungslose Temperaturerfassung des Infrarot-Sensors stellt eine besonders einfache und zugleich ausreichend genaue Messmethode dar. Die so erzielbare Genauigkeit der Temperaturerfassung des wenigstens einen Kochbereichs ist für die Dunstabzugshaube der Erfindung ausreichend, da durch die Temperaturerfassung lediglich das Einschalten der Lüftervorrichtung ausgelöst werden soll, nicht jedoch eine bedarfsgenaue Regelung der Absaugleistung erfolgen soll.In a preferred embodiment of the invention, the temperature detection device has at least one infrared sensor for detecting a Temperature of at least one cooking area of the cooking appliance on. The non-contact temperature detection of the infrared sensor is a particularly simple and at the same time sufficiently accurate measurement method. The achievable accuracy of the temperature detection of at least one cooking area is sufficient for the hood of the invention, since the temperature detection is only to turn on the fan device, not However, a needs-based control of the suction should be done.

In einer bevorzugten Ausgestaltung der Erfindung ist die Steuereinrichtung ausgebildet, um die Lüftervorrichtung in Abhängigkeit von einer durch die Temperaturerfassungseinrichtung erfassten Temperatur auf einer niedrigen Leistungsstufe einzuschalten. Bezüglich der Steuerung in Abhängigkeit von einer Temperatur gelten die obigen Ausführungen entsprechend. Das Einschalten der Lüftervorrichtung auf einer niedrigen Leistungsstufe verursacht zunächst nur einen geringen Energieverbrauch und geringe Geräusche. Erst wenn mit Hilfe der Kochdunsterfassungseinrichtung auch tatsächlich Kochdünste in der abgesaugten Abluft erfasst werden, wird die Lüftervorrichtung hochgeschaltet. Die niedrige Leistungsstufe entspricht insbesondere einer niedrigsten Leistungsstufe der Lüftervorrichtung.In a preferred embodiment of the invention, the control device is designed to switch on the fan device as a function of a temperature detected by the temperature detection device at a low power level. Regarding the control as a function of a temperature, the above statements apply accordingly. Turning on the fan device at a low power level initially causes only low power consumption and low noise. Only when using the Kochdunsterfassungseinrichtung actually cooking fumes are detected in the extracted exhaust air, the fan device is switched up. The low power level corresponds in particular to a lowest power level of the fan device.

In einer weiteren bevorzugten Ausgestaltung der Erfindung ist die Temperaturerfassungseinrichtung ausgebildet, um die Temperaturen mehrerer Kochbereiche des Kochgerätes separat zu erfassen; ist die Lüftervorrichtung ausgebildet, um separate Abluftströme von den einzelnen Kochbereichen des Kochgerätes zu erzeugen; und ist die Steuereinrichtung ausgebildet, um die separaten Abluftströme der Lüftervorrichtung in Abhängigkeit von den durch die Temperaturerfassungseinrichtung erfassten Temperaturen zu steuern. Bei dieser Ausgestaltung besteht die Möglichkeit, Abluft hauptsächlich nur von den Kochbereichen abzusaugen, an denen tatsächlich Kochdünste entstehen. Als Ergebnis können der Energieverbrauch und/oder die Geräuschentwicklung der Dunstabzugshaube reduziert werden.In a further preferred embodiment of the invention, the temperature detection device is designed to detect the temperatures of several cooking areas of the cooking appliance separately; the fan device is designed to generate separate exhaust air streams from the individual cooking zones of the cooking appliance; and the control device is designed to control the separate exhaust air flows of the fan device as a function of the temperatures detected by the temperature detection device. In this embodiment, it is possible to suck exhaust air mainly only from the cooking areas where cooking fumes actually arise. As a result, the energy consumption and / or the noise of the hood can be reduced.

In einer noch weiteren bevorzugten Ausgestaltung der Erfindung ist die Steuereinrichtung ausgebildet, um die Lüftervorrichtung in Abhängigkeit von einer durch die Temperaturerfassungseinrichtung erfassten Temperatur, in Abhängigkeit von durch die Kochdunsterfassungseinrichtung erfassten Kochdünsten, zeitabhängig und/oder durch eine manuelle Bedienung abzuschalten.In yet another preferred embodiment of the invention, the control device is designed to switch off the fan device as a function of a temperature detected by the temperature detection device, as a function of cooking fumes detected by the cooking datalogger, depending on time and / or by manual operation.

In einer noch weiteren bevorzugten Ausgestaltung der Erfindung ist die Dunstabzugshaube zusätzlich mit einer Bedienvorrichtung ausgestattet, über welche ein Benutzer die Lüftervorrichtung manuell einschalten und/oder die Leistungsstufen der Lüftervorrichtung manuell auswählen kann.In yet another preferred embodiment of the invention, the hood is additionally equipped with an operating device, via which a user can turn on the fan device manually and / or manually select the power levels of the fan device.

Das erfindungsgemäße Verfahren zum Steuern des Betriebs einer Dunstabzugshaube, welche oberhalb eines Kochgerätes mit wenigstens einem Kochbereich angeordnet ist, enthält die Schritte des Erfassens einer Temperatur wenigstens eines Kochbereichs des Kochgerätes; des Einschaltens einer Lüftervorrichtung in Abhängigkeit von der erfassten Temperatur; des Erfassens von Kochdünsten in der mittels der Lüftervorrichtung abgesaugten Abluft; und des Steuerns einer Absaugleistung der Lüftervorrichtung in Abhängigkeit von den erfassten Kochdünsten.The inventive method for controlling the operation of a cooker hood, which is arranged above a cooking appliance with at least one cooking area, comprising the steps of detecting a temperature of at least one cooking area of the cooking appliance; turning on a fan device as a function of the detected temperature; detecting cooking fumes in the extracted by means of the fan device exhaust air; and controlling a suction power of the fan device depending on the detected cooking fumes.

Mit diesem Verfahren können die gleichen Vorteile erzielt werden wie sie in Zusammenhang mit der Dunstabzugshaube der Erfindung erläutert worden sind. Bezüglich der Vorteile, Begriffsdefinitionen und bevorzugten Ausgestaltungen sei deshalb an dieser Stelle nur auf die obigen Ausführungen in Zusammenhang mit der Dunstabzugshaube der Erfindung verwiesen.With this method, the same advantages can be achieved as have been explained in connection with the extractor hood of the invention. With regard to the advantages, definitions of terms and preferred embodiments, reference should therefore be made at this point only to the above statements in connection with the extractor hood of the invention.

In einer bevorzugten Ausgestaltung der Erfindung wird die Lüftervorrichtung in Abhängigkeit von der erfassten Temperatur auf einer niedrigen Leistungsstufe eingeschaltet.In a preferred embodiment of the invention, the fan device is switched on as a function of the detected temperature at a low power level.

In einer weiteren bevorzugten Ausgestaltung der Erfindung werden die Temperaturen mehrerer Kochbereiche des Kochgerätes separat erfasst und in Abhängigkeit von den erfassten Temperaturen separate Abluftströme der Lüftervorrichtung von einzelnen Kochstellen des Kochgerätes gesteuert.In a further preferred embodiment of the invention, the temperatures of several cooking areas of the cooking appliance are detected separately and in Depending on the detected temperatures separate exhaust air streams of the fan device controlled by individual cooking zones of the cooking appliance.

In einer noch weiteren bevorzugten Ausgestaltung der Erfindung wird die Lüftervorrichtung der Dunstabzugshaube in Abhängigkeit von einer erfassten Temperatur wenigstens eines Kochbereichs des Kochgerätes, in Abhängigkeit von erfassten Kochdünsten, zeitabhängig und/oder durch eine manuelle Bedienung abgeschaltet.In yet another preferred embodiment of the invention, the fan device of the extractor fan depending on a detected temperature of at least one cooking area of the cooking appliance, depending on detected cooking fumes, time-dependent and / or switched off by a manual operation.

Obige sowie weitere Merkmale und Vorteile der Erfindung werden aus der nachfolgenden Beschreibung eines bevorzugten, nicht-einschränkenden Ausführungsbeispiels anhand der beiliegenden Zeichnung besser verständlich. Darin zeigt die einzige Figur 1 eine schematische Darstellung des Aufbaus einer Ausgestaltung einer Dunstabzugshaube gemäß der vorliegenden Erfindung.The above and other features and advantages of the invention will become more apparent from the following description of a preferred, non-limiting embodiment thereof with reference to the accompanying drawings. In it shows the only one FIG. 1 a schematic representation of the structure of an embodiment of an extractor hood according to the present invention.

In Figur 1 ist beispielhaft ein Ausführungsbeispiel einer Dunstabzugshaube gemäß der vorliegenden Erfindung veranschaulicht.In FIG. 1 exemplified an embodiment of an extractor hood according to the present invention is illustrated.

Die Dunstabzugshaube 14 ist in der üblichen Weise oberhalb eines Kochfeldes 10 mit mehreren Kochstellen 12 angeordnet. Die Kochstellen 12 können gleiche oder zueinander verschiedene Größen und Formen haben. Außerdem können die Kochstellen 12 unabhängig voneinander betrieben werden, d.h. einzeln eingeschaltet und in ihren Heizleistungen geregelt werden. In diesem Ausführungsbeispiel bildet jede der insgesamt vier Kochstellen 12 gleichzeitig einen Kochbereich im Sinne der Erfindung. In anderen Ausführungsbeispielen können zum Beispiel zwei Kochstellen 12 zu einem Kochbereich zusammengefasst sein.The extractor hood 14 is arranged in the usual way above a hob 10 with a plurality of cooking zones 12. The cooking areas 12 may have the same or different sizes and shapes. In addition, the cooking zones 12 can be operated independently of each other, i. individually switched on and regulated in their heat outputs. In this embodiment, each of the four cooking zones 12 simultaneously forms a cooking area in the context of the invention. In other embodiments, for example, two cooking zones 12 may be combined to form a cooking area.

Die Dunstabzugshaube 14 weist eine Lüftervorrichtung 16 mit einem Ventilator in einem Abluftkanal 17 auf. Der Ventilator wird über einen Elektromotor (nicht dargestellt) der Lüftervorrichtung 16 angetrieben. Der angetriebene Ventilator erzeugt einen Abluftstrom von den Kochstellen 12 des Kochfeldes 10 nach oben in die Dunstabzugshaube 14 und weiter in den Abluftkanal 17 hinein. Über den Abluftkanal 17 wird die Abluft beispielsweise direkt aus einem Gebäude heraus geführt oder in ein Abluftsystem weitergeleitet.The extractor hood 14 has a fan device 16 with a fan in an exhaust duct 17. The fan is driven by an electric motor (not shown) of the fan device 16. The driven fan generates an exhaust air flow from the cooking zones 12 of the hob 10 upwards into the extractor hood 14 and further into the exhaust air duct 17. On the Exhaust duct 17, the exhaust air, for example, led directly out of a building or forwarded to an exhaust system.

Optional ist an der den Kochstellen 12 zugewandten Unterseite der Dunstabzugshaube eine Filtervorrichtung (nicht dargestellt) angeordnet. Die Filtervorrichtung ist beispielsweise lösbar montiert, um sie bei Bedarf auswechseln bzw. reinigen zu können.Optionally, a filter device (not shown) is arranged at the underside of the extractor hood facing the cooking zones 12. The filter device is, for example, detachably mounted so that it can be replaced or cleaned if necessary.

Im Bereich der Unterkante der Dunstabzugshaube 14 sind mehrere (in diesem Ausführungsbeispiel vier) Infrarot-Sensoren 18 angeordnet. Die vier Infrarot-Sensoren bilden gemeinsam eine Temperaturerfassungseinrichtung im Sinne der Erfindung. Die Infrarot-Sensoren 18 sind jeweils ausgebildet und ausgerichtet, um eine Temperatur einer Kochstelle 12 des Kochfeldes 10 zu erfassen. Sie sind vorzugsweise im Umfangsrandbereich der Abzugshaube 14 und damit möglichst außerhalb des Abluftstroms positioniert. Wird eine Kochstelle 12 in Betrieb genommen, so steigt die Temperatur der Kochstelle 12 sowie des darauf positionierten Kochgeschirrs, was von den Infrarot-Sensoren 18 erfasst werden kann.In the area of the lower edge of the extractor hood 14, a plurality of (four in this embodiment) infrared sensors 18 are arranged. The four infrared sensors together form a temperature detection device in the sense of the invention. The infrared sensors 18 are each formed and aligned to detect a temperature of a cooking position 12 of the hob 10. They are preferably in the peripheral edge region of the hood 14 and thus positioned as possible outside the exhaust air flow. If a hotplate 12 is put into operation, the temperature of the hotplate 12 and of the cookware positioned thereon increases, which can be detected by the infrared sensors 18.

Je nach Ausführungsform können zusätzlich weitere Temperatursensoren (nicht dargestellt) an der Dunstabzugshaube 14 vorgesehen sein, welche die Temperatur der Umgebung der Dunstabzugshaube erfassen.Depending on the embodiment, additional temperature sensors (not shown) may additionally be provided on the extractor hood 14, which detect the temperature of the surroundings of the extractor hood.

Die Infrarot-Sensoren 18 und ggf. die weiteren Temperatursensoren sind mit einer Steuereinrichtung 24 der Dunstabzugshaube 14 verbunden. Die in Figur 1 separat dargestellte Steuereinrichtung 24 ist vorzugsweise in der Dunstabzugshaube 14 integriert.The infrared sensors 18 and possibly the other temperature sensors are connected to a control device 24 of the extractor hood 14. In the FIG. 1 separately shown control device 24 is preferably integrated in the extractor hood 14.

Wie in Figur 1 angedeutet, ist im Abluftstrom vor dem Ventilator der Lüftervorrichtung 16 wenigstens ein Kochdunstsensor 20 zum Beispiel in Form eines Ultraschallsensors, eines Infrarot-Sensors, eines Lasersensors oder dergleichen in der Dunstabzugshaube 14 angeordnet. Dieser wenigstens eine Kochdunstsensor 20 soll das Vorhandensein und die Konzentration von Kochdünsten im Abluftstrom der Dunstabzugshaube 14 erfassen.As in FIG. 1 indicated, in the exhaust air flow in front of the fan of the fan device 16 at least one cooker sensor 20, for example in the form of an ultrasonic sensor, an infrared sensor, a laser sensor or the like in the hood 14 arranged. This at least one cooking vapor sensor 20 is intended to detect the presence and concentration of cooking fumes in the exhaust air stream of the extractor hood 14.

Wie ebenfalls in Figur 1 angedeutet, ist im Abluftstrom nach dem Ventilator der Lüftervorrichtung 16 wenigstens ein weiterer Kochdunstsensor 22 zum Beispiel in Form eines Gassensors oder dergleichen im Abluftkanal 17 der Dunstabzugshaube 14 angeordnet. Dieser wenigstens eine weitere Kochdunstsensor 22 soll die Zusammensetzung von Kochdünsten im Abluftstrom der Dunstabzugshaube 14 erfassen.Like also in FIG. 1 indicated in the exhaust air flow to the fan of the fan device 16, at least one further cooker sensor 22, for example in the form of a gas sensor or the like in the exhaust duct 17 of the hood 14 is arranged. This at least one further cooker sensor 22 is intended to detect the composition of cooking fumes in the exhaust air stream of the extractor hood 14.

Der wenigstens eine Kochdunstsensor 20 und der wenigstens eine weitere Kochdunstsensor 22 bilden eine Kochdunsterfassungseinrichtung der Erfindung. Diese Kochdunsterfassungseinrichtung kann in anderen Ausführungsbeispielen auch nur den wenigstens einen Kochdunstsensor 20 oder nur den wenigstens einen weiteren Kochdunstsensor 22 aufweisen.The at least one cooking-steam sensor 20 and the at least one further cooking-steam sensor 22 form a cooking-steam detecting device of the invention. In other exemplary embodiments, this cooking dusk detection device can also have only the at least one cooking-steam sensor 20 or only the at least one further cooking-steam sensor 22.

Der wenigstens eine Kochdunstsensor 20 und der wenigstens eine weitere Kochdunstsensor 22 sind ebenfalls mit der Steuereinrichtung 24 der Dunstabzugshaube 14 verbunden.The at least one cooking-steam sensor 20 and the at least one further cooking-steam sensor 22 are likewise connected to the control device 24 of the extractor hood 14.

Die Steuereinrichtung 24 der Dunstabzugshaube 14 steuert die Lüftervorrichtung 16 in Abhängigkeit von den empfangenen Messsignalen der Temperaturerfassungseinrichtung und der Kochdunsterfassungseinrichtung wie folgt.The control device 24 of the extractor hood 14 controls the fan device 16 as a function of the received measurement signals of the temperature detection device and the cooking datalogger as follows.

Im Ausgangszustand, d.h. im Nicht-Betriebszustand bzw. Stand-by-Zustand der Dunstabzugshaube 14 überwachen die Infrarot-Sensoren 18 die Temperaturen der Kochstellen 12 des Kochfeldes 10. Die von den Infrarot-Sensoren 18 erfassten Temperaturwerte werden in der Steuereinrichtung 24 jeweils mit einem vorgegebenen Schwellenwert verglichen. Erreicht ein Temperaturwert diesen vorgegebenen Schwellenwert, so schaltet die Steuereinrichtung 24 den Elektromotor der Lüftervorrichtung 16 auf einer niedrigen Leistungsstufe ein. Der vorgegebene Schwellenwert für die Temperatur liegt hier deutlich oberhalb Raumtemperatur, er beträgt zum Beispiel 40°C, 45°C, 50°C, 55°C, 60°C oder mehr.In the initial state, ie in the non-operating state or stand-by state of the extractor 14 monitor the infrared sensors 18, the temperatures of the cooking zones 12 of the hob 10. The temperature detected by the infrared sensors 18 temperature values are in the controller 24 each with a predetermined threshold value compared. If a temperature value reaches this predetermined threshold value, the control device 24 switches on the electric motor of the fan device 16 at a low power level. The predetermined threshold value for the temperature is significantly above room temperature, for example 40 ° C, 45 ° C, 50 ° C, 55 ° C, 60 ° C or more.

In anderen Ausführungsbeispielen kann anstelle eines Vergleichs zwischen Temperaturwert und Schwellenwert auch ein mittlerer Temperaturwert aller Kochstellen 12, ein maximaler Temperaturwert aller Kochstellen 12, ein Differenzwert zwischen der Temperatur einer Kochstelle 12 und einer Umgebungstemperatur, ein Differenzwert zwischen der mittleren Temperatur aller Kochstellen 12 und einer mittleren Umgebungstemperatur, ein Differenzwert zwischen der maximalen Temperatur aller Kochstellen 12 und einer mittleren oder maximalen Umgebungstemperatur oder dergleichen mit einem entsprechenden vorgegebenen Schwellenwert verglichen werden. Des Weiteren besteht auch die Möglichkeit, einen zeitlichen Temperaturgradienten der vorgenannten Messwerte mit einem entsprechenden vorgegebenen Schwellenwert zu vergleichen.In other embodiments, instead of a comparison between temperature value and threshold value, a mean temperature value of all cooking zones 12, a maximum temperature value of all cooking zones 12, a difference between the temperature of a cooking zone 12 and an ambient temperature, a difference between the mean temperature of all cooking zones 12 and a middle Ambient temperature, a difference value between the maximum temperature of all cooking zones 12 and a mean or maximum ambient temperature or the like with a corresponding predetermined threshold value are compared. Furthermore, it is also possible to compare a temporal temperature gradient of the aforementioned measured values with a corresponding predetermined threshold value.

Vorzugsweise wird die Lüftervorrichtung 16 durch die Steuereinrichtung 24 erst dann eingeschaltet, wenn der vorgegebene Schwellenwert für eine vorbestimmte Zeitdauer erreicht bzw. überschritten wird. Auf diese Weise können zum Beispiel Messfehler ausgeglichen werden und kann ein ständiges Ein- und Ausschalten der Lüftervorrichtung 16 im Grenzbereich des Schwellenwertes vermieden werden.Preferably, the fan device 16 is turned on by the controller 24 only when the predetermined threshold is reached or exceeded for a predetermined period of time. In this way, for example, measurement errors can be compensated for and a constant switching on and off of the fan device 16 can be avoided in the threshold range of the threshold.

Ist die Lüftervorrichtung 16 nun mit einer niedrigen Leistungsstufe eingeschaltet, so erzeugt sie einen schwachen Abluftstrom von den Kochstellen 12 nach oben in die Dunstabzugshaube 14. Die Sensoren 20, 22 der Kochdunsterfassungseinrichtung erfassen dann Kochdünste in diesem Abluftstrom. Sind keine Kochdünste im Abluftstrom vorhanden bzw. erfassbar, so bleibt die Lüftervorrichtung 16 weiter auf niedriger Leistungsstufe im Betrieb.If the fan device 16 is now switched on with a low power level, it generates a weak exhaust air flow from the cooking areas 12 upwards into the extractor hood 14. The sensors 20, 22 of the cooking dusk detection device then detect cooking fumes in this exhaust air flow. If no cooking fumes are present or detectable in the exhaust air flow, then the fan device 16 continues to operate at a low power level.

Entstehen auf dem Kochfeld 10 nennenswerte Kochdünste, so werden diese von den Sensoren 20, 22 der Kochdunsterfassungseinrichtung in der Abzugshaube 14 erfasst. Die Steuereinrichtung 24 steuert dann die Absaugleistung der Lüftervorrichtung 16 bzw. die Drehzahl des Elektromotors des Ventilators entsprechend den erfassten Kochdünsten, beispielsweise stufenlos oder in vorgegebenen Leistungsstufen. Dabei wird die Absaugleistung entsprechend den Messwerten der Kochdunsterfassungseinrichtung erhöht, abgesenkt oder im Wesentlichen konstant gehalten.Emerge on the hob 10 significant cooking fumes, they are detected by the sensors 20, 22 of Kochdunsterfassungseinrichtung in the fume hood 14. The control device 24 then controls the suction power of the fan device 16 or the speed of the electric motor of the fan according to the detected cooking fumes, for example, continuously or in predetermined Power levels. In this case, the suction power is increased, lowered or substantially kept constant in accordance with the measured values of the cooking dusk detection device.

Obwohl nicht dargestellt, kann die Dunstabzugshaube 14 optional zusätzlich mit einer Bedienvorrichtung ausgestattet sein. Diese Bedienvorrichtung ist dann ebenfalls mit der Steuereinrichtung2 4 verbunden. Über die Bedienvorrichtung kann ein Benutzer die Lüftervorrichtung 16 bei Bedarf manuell einschalten und manuell ihre Leistungsstufe einstellen. Die manuelle Betätigung der Dunstabzugshaube 14 hat ggf. Vorrang vor der oben beschriebenen automatischen Steuerung.Although not shown, the hood 14 may optionally be additionally equipped with an operating device. This operating device is then also connected to the control device 2 4. Via the operating device, a user can manually switch on the fan device 16 if necessary and manually adjust its power level. The manual actuation of the extractor hood 14 may have priority over the automatic control described above.

Das Abschalten der Dunstabzugshaube kann auf verschiedene Weise erfolgen. So kann die Steuereinrichtung 24 die Lüftervorrichtung 16 der Dunstabzugshaube 14 zum Beispiel wieder abschalten, wenn die Sensoren 20, 22 der Kochdunsterfassungeinrichtung keine Kochdünste mehr erfassen, wenn die von den Infrarot-Sensoren 18 der Temperaturerfassungseinrichtung erfasste Temperatur wieder unter den vorgegebenen Schwellenwert sinkt, durch eine manuelle Betätigung einer entsprechenden Bedienvorrichtung durch einen Benutzer, bei Erreichen einer vorbestimmten Betriebsdauer der Lüftervorrichtung 16 und dergleichen. Selbstverständlich sind auch Kombinationen dieser Bedingungen denkbar und vorzugsweise müssen die jeweiligen Bedingungen eine vorbestimmte Zeitdauer erfüllt sein.The shutdown of the hood can be done in various ways. For example, the control device 24 can switch off the fan device 16 of the extractor hood 14 again if the sensors 20, 22 of the cooking datalogger no longer detect cooking fumes when the temperature detected by the infrared sensors 18 of the temperature detection device drops below the predetermined threshold again manual actuation of a corresponding operating device by a user, upon reaching a predetermined operating time of the fan device 16 and the like. Of course, combinations of these conditions are conceivable and preferably the respective conditions must be met for a predetermined period of time.

In einer Abwandlung des oben beschriebenen Ausführungsbeispiels ist die Temperaturerfassungseinrichtung so ausgebildet, dass sie die Temperaturen der einzelnen Kochstellen 12 des Kochfeldes 10 separat erfassen kann. In diesem Fall ist es denkbar, mit der Lüftervorrichtung 16 einen Abluftstrom schwerpunktmäßig von der jeweils benutzten Kochstelle 12 zu erzeugen. Die Lüftervorrichtung 16 weist zu diesem Zweck beispielsweise mehrere Ventilatoren und/oder Luftklappen auf, welche von der Steuereinrichtung 24 angesteuert werden können.In a modification of the embodiment described above, the temperature detection device is designed so that it can detect the temperatures of the individual cooking zones 12 of the hob 10 separately. In this case, it is conceivable, with the fan device 16, to generate an exhaust air stream predominantly from the respectively used hotplate 12. The fan device 16 has for this purpose, for example, a plurality of fans and / or louvers, which can be controlled by the control device 24.

BEZUGSZIFFERNLISTEREFERENCE NUMBER LIST

1010
Kochgerätcooker
1212
Kochstellenhobs
1414
DunstabzugshaubeHood
1616
Lüftervorrichtungfan device
1717
Abluftkanalexhaust duct
1818
Temperaturerfassungseinrichtung, IR-SensorenTemperature detection device, IR sensors
2020
Kochdunsterfassungseinrichtung, SensorenCooking dusk detector, sensors
2222
Kochdunsterfassungseinrichtung, SensorenCooking dusk detector, sensors
2424
Steuereinrichtungcontrol device

Claims (9)

Dunstabzugshaube (14), mit
einer Lüftervorrichtung (16) zum Absaugen von Abluft eines unter der Dunstabzugshaube angeordneten Kochgerätes (10) mit wenigstens einem Kochbereich (12);
einer Temperaturerfassungseinrichtung (18) zum Erfassen einer Temperatur wenigstens eines Kochbereichs (12) des Kochgerätes (10); einer Kochdunsterfassungseinrichtung (20, 22) zum Erfassen von Kochdünsten in der mittels der Lüftervorrichtung (16) abgesaugten Abluft; und einer Steuereinrichtung (24) zum Einschalten der Lüftervorrichtung (16) in Abhängigkeit von einer durch die Temperaturerfassungseinrichtung (18) erfassten Temperatur und Steuern einer Absaugleistung der Lüftervorrichtung (16) in Abhängigkeit von durch die Kochdunsterfassungseinrichtung (20, 22) erfassten Kochdünsten.Extractor hood (14), with
a fan device (16) for extracting exhaust air of a cooking appliance (10) arranged under the extractor hood with at least one cooking area (12);
a temperature detecting means (18) for detecting a temperature of at least one cooking area (12) of the cooking appliance (10); a cooking dusk detecting means (20, 22) for detecting cooking fumes in the extracted by means of the fan device (16) exhaust air; and a control device (24) for switching on the fan device (16) as a function of a temperature detected by the temperature detection device (18) and controlling a suction power of the fan device (16) as a function of cooking fumes detected by the cooking dusk detection device (20, 22). Dunstabzugshaube nach Anspruch 1,
dadurch gekennzeichnet, dass
die Temperaturerfassungseinrichtung (18) wenigstens einen Infrarot-Sensor zum Erfassen einer Temperatur wenigstens eines Kochbereichs (12) des Kochgerätes (10) aufweist.Extractor hood according to claim 1,
characterized in that
the temperature detection device (18) has at least one infrared sensor for detecting a temperature of at least one cooking region (12) of the cooking appliance (10). Dunstabzugshaube nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
die Steuereinrichtung (24) ausgebildet ist, um die Lüftervorrichtung (16) in Abhängigkeit von einer durch die Temperaturerfassungseinrichtung (18) erfassten Temperatur auf einer niedrigen Leistungsstufe einzuschalten.Extractor hood according to one of the preceding claims,
characterized in that
the control device (24) is designed to switch on the fan device (16) in response to a temperature detected by the temperature detection device (18) at a low power level. Dunstabzugshaube nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
die Temperaturerfassungseinrichtung (18) ausgebildet ist, um die Temperaturen mehrerer Kochbereiche (12) des Kochgerätes (10) separat zu erfassen;
die Lüftervorrichtung (16) ausgebildet ist, um separate Abluftströme von den einzelnen Kochbereichen (12) des Kochgerätes (10) zu erzeugen; und
die Steuereinrichtung (24) ausgebildet ist, um die separaten Abluftströme der Lüftervorrichtung (16) in Abhängigkeit von den durch die Temperaturerfassungseinrichtung (18) erfassten Temperaturen zu steuern.Extractor hood according to one of the preceding claims,
characterized in that
the temperature detecting means (18) is adapted to separately detect the temperatures of a plurality of cooking areas (12) of the cooking appliance (10);
the fan device (16) is designed to generate separate exhaust air streams from the individual cooking areas (12) of the cooking appliance (10); and
the control device (24) is designed to control the separate exhaust air flows of the fan device (16) as a function of the temperatures detected by the temperature detection device (18). Dunstabzugshaube nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
die Steuereinrichtung (24) ausgebildet ist, um die Lüftervorrichtung (16) in Abhängigkeit von einer durch die Temperaturerfassungseinrichtung (18) erfassten Temperatur, in Abhängigkeit von durch die Kochdunsterfassungseinrichtung (20, 22) erfassten Kochdünsten, zeitabhängig und/oder durch eine manuelle Bedienung abzuschalten.Extractor hood according to one of the preceding claims,
characterized in that
the control device (24) is designed to switch off the fan device (16) as a function of a temperature detected by the temperature detection device (18) as a function of cooking fumes detected by the cooking dusk detection device (20, 22), depending on the time and / or by manual operation , Verfahren zum Steuern des Betriebs einer Dunstabzugshaube (14), welche oberhalb eines Kochgerätes (10) mit wenigstens einem Kochbereich (12) angeordnet ist, mit den Schritten: Erfassen einer Temperatur wenigstens eines Kochbereichs (12) des Kochgerätes (10); Einschalten einer Lüftervorrichtung (16) in Abhängigkeit von der erfassten Temperatur; Erfassen von Kochdünsten in der mittels der Lüftervorrichtung (16) abgesaugten Abluft; und Steuern einer Absaugleistung der Lüftervorrichtung (16) in Abhängigkeit von den erfassten Kochdünsten. Method for controlling the operation of an extractor hood (14), which is arranged above a cooking appliance (10) with at least one cooking area (12), with the steps: Detecting a temperature of at least one cooking zone (12) of the cooking appliance (10); Switching on a fan device (16) as a function of the detected temperature; Detecting cooking fumes in the extracted by means of the fan device (16) exhaust air; and Controlling a suction power of the fan device (16) in dependence on the detected cooking fumes. Verfahren nach Anspruch 6,
dadurch gekennzeichnet, dass
die Lüftervorrichtung (16) in Abhängigkeit von der erfassten Temperatur auf einer niedrigen Leistungsstufe eingeschaltet wird.Method according to claim 6,
characterized in that
the fan device (16) is turned on in response to the detected temperature at a low power level. Verfahren nach Anspruch 6 oder 7,
dadurch gekennzeichnet, dass
Temperaturen mehrerer Kochbereiche (12) des Kochgerätes (10) separat erfasst werden; und
in Abhängigkeit von den erfassten Temperaturen separate Abluftströme der Lüftervorrichtung (16) von einzelnen Kochbereichen (12) des Kochgerätes (10) gesteuert werden.Method according to claim 6 or 7,
characterized in that
Temperatures of several cooking areas (12) of the cooking appliance (10) are detected separately; and
depending on the detected temperatures separate exhaust air streams of the fan device (16) of individual cooking areas (12) of the cooking appliance (10) are controlled. Verfahren nach einem der Ansprüche 6 bis 8,
dadurch gekennzeichnet, dass
die Lüftervorrichtung (16) der Dunstabzugshaube (14) in Abhängigkeit von einer erfassten Temperatur wenigstens eines Kochbereichs des Kochgerätes, in Abhängigkeit von erfassten Kochdünsten, zeitabhängig und/oder durch eine manuelle Bedienung abgeschaltet wird.Method according to one of claims 6 to 8,
characterized in that
the fan device (16) of the extractor hood (14) is switched off as a function of a detected temperature of at least one cooking zone of the cooking appliance, depending on detected cooking fumes, time-dependent and / or by manual operation.
EP13005692.2A 2012-12-20 2013-12-06 Extractor hood and method for controlling the operation of an extractor hood Active EP2746681B1 (en)

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