EP1382914A2 - Apparatus and method for air extraction - Google Patents

Apparatus and method for air extraction Download PDF

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Publication number
EP1382914A2
EP1382914A2 EP03006665A EP03006665A EP1382914A2 EP 1382914 A2 EP1382914 A2 EP 1382914A2 EP 03006665 A EP03006665 A EP 03006665A EP 03006665 A EP03006665 A EP 03006665A EP 1382914 A2 EP1382914 A2 EP 1382914A2
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EP
European Patent Office
Prior art keywords
sensor
air pressure
air
air extraction
evaluation device
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EP03006665A
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German (de)
French (fr)
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EP1382914A3 (en
Inventor
Heinz Gatzmanga
Hartmut Backe
Ernst U. Menken
Manuel Fernandez
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Albatros Applied Technologies GmbH
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Albatros Applied Technologies GmbH
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Publication of EP1382914A2 publication Critical patent/EP1382914A2/en
Publication of EP1382914A3 publication Critical patent/EP1382914A3/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24CDOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00Details
    • F24C15/20Removing cooking fumes
    • F24C15/2021Arrangement or mounting of control or safety systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/0001Control or safety arrangements for ventilation

Definitions

  • the invention relates to an air extraction device, in particular for an extractor hood, with a sensor device and an associated evaluation device, and a Air extraction device method.
  • Extractor hoods which are attached over hotplates, are used in most applications controlled by hand. However, extractor hoods are also from the prior art known, which are controlled or regulated by different criteria.
  • Such air extraction devices are known from DE 25 18 750 B2.
  • the one revealed in it Cooker hood includes two temperature sensors, which depend on temperature differences control a fan.
  • an extractor hood is known from utility model DE 76 33 882, the one Moisture sensing device, consisting of a sensor probe and a switching device for Has switched on, off and switching over the electrically operated fan of the extractor hood.
  • the object of the invention is to improve an air extraction device and critical conditions to avoid in operating rooms.
  • the task of the air extraction device described at the outset is achieved in that the Sensor device is an air pressure measuring device and the evaluation device differential pressures determined from measurement signals of the air pressure measuring device and in dependence thereon Differential pressures generated output signals.
  • Advantages of this invention are that critical negative pressure conditions in operating rooms, such as in a kitchen, and can be remedied in good time can be found. So there are the critical conditions such as difficult opening of the Doors and windows in the operating room or an above-average suction power on others Housing units avoided.
  • the air pressure measuring device preferably has a single sensor for the delivery of at least two time-spaced air pressure measurements.
  • a filter to eliminate Environmental influences follow the sensor. This has the advantage that the invention can be realized with few components and is simple to set up. It works despite environmental influences.
  • the filter is advantageously a bandpass filter, the lower limit of which is due to environmental influences and its upper limit to high-frequency interference, such as electromagnetic Radiation. This has the advantage that a very sensitive system is implemented.
  • the air pressure measuring device has a Sensor for air pressure measurement in the operating room and a reference sensor for air pressure measurement in a reference room.
  • the reference room does not have to be a closed side room but can also be the environment outside the building. Advantages of this embodiment lie in the fact that the reference measured value does not have to be stored, that the current ambient conditions contained in the reference air pressure value to be compared are. In contrast, when a reference pressure value is saved, only a specific one is saved Environmental status saved.
  • the evaluation device is preferably connected to a signal transmitter. This has the advantage that a current or critical condition can be communicated in good time.
  • the signal generator can emit an acoustic signal or optical signal, for example, or have a display. An operator can then control the air extraction device accordingly, for example by reducing the air throughput of the hood or the operating room additionally is ventilated.
  • the air extraction device can also have a regulation, with which the air extraction is controlled directly, in which the evaluation device is a component this scheme is. This has the advantage that critical conditions are automatically avoided and do not depend on the commitment of an operator.
  • This problem can also be solved with an air extraction process. It has the following procedural steps on: a differential pressure with the sensor device is measured and output signals with the evaluation device depending on the measured differential pressures output.
  • the differential pressure is derived from sensor measurements that are spaced apart in time determined. This has the advantage that only a single sensor is required for air pressure measurement is.
  • the differential pressure is recorded from different locations Sensor measured values determined. This allows the current Environmental conditions are eliminated.
  • FIG. 1 shows an air extraction device 1 in an operating room 5.
  • a sensor 2 for air pressure measurement On the air extraction device 1 there is a sensor 2 for air pressure measurement.
  • Sensor 2 is a bandpass filter 4 downstream.
  • the bandpass filter is connected to an evaluation device 3.
  • the Evaluation device 3 contains a memory 11.
  • a temperature sensor 10 is also with the evaluation device 3 connected.
  • the temperature sensor 10 is expediently on the sensor 2 arranged.
  • the evaluation device controls a signal generator 7 and an air vent 8 1 has a display and two signal lamps.
  • a manual control device 9 is connected to the evaluation device in order to control the air vent 8.
  • the sensor 2 works in conjunction with the evaluation device and the bandpass filter a barometer with an absolute pressure measurement.
  • the Discharge 8 the current air pressure measured.
  • the environmental influences are above the bandpass filter in the range from 0 to 10 Hz as the lower threshold and high-frequency interference, in the range from 40 to 200 Hz eliminated as the upper threshold.
  • These measured values are in the evaluation device 3 held in a memory 11. There will be a histogram with at least 10 to 100,000 measured values created, the course of which is evaluated. The measurement takes place in the 0.01 mbar range. Differences in pressure between 4 and 5 Pa are recognized.
  • a temperature sensor 10 measures the temperature and gives these values to the evaluation device, which has a temperature compensation of 0.00002 ppm / ° C.
  • the evaluation device 3 When a certain pressure difference limit is exceeded or fallen below, which either entered in the factory or manually, for example via the manual control device 9 is, the evaluation device 3 generates output signals. These output signals are dependent from the determined pressure difference.
  • the pressure difference limits are between 0 - 5 mbar.
  • a first operating mode I the signal generator 7 is controlled with these output signals.
  • An operator recognizes the signals from the signal generator 7 and controls it accordingly via the manual control device 9 to the air vent 8.
  • the air vent 8 is directly via the evaluation device 3 controlled so that the combination of sensor and evaluation device is part of a control system are.
  • the signal generator 7 shows the output signals of the evaluation device 3 for the operator to check at the same time.
  • the air extraction is controlled at fixed speed levels.
  • the air vent 8 is regulated continuously to the measured pressure difference or continuously controlled by the manual control device 9.
  • the manual control device is superimposed on the regulation in connection with the evaluation device, so that an operator can always control the air vent 8 directly.
  • FIG. 2 shows an air extraction device 1 in a second embodiment with a sensor for air pressure measurement in an operating room 5 and a reference sensor 2 'in a reference room 6.
  • the difference to the first embodiment is that a temperature sensor 10 and a bandpass filter 4 are not necessary.
  • a memory 11 in the evaluation device is also not required. From the current values of sensor 2 and the reference sensor 2 'current differential pressure values in the evaluation device 3 are compared of the two measured values.
  • the two operating modes, a first operating mode l with a manual control of the air vent 8 via the manual control device 9 and one second operating mode II, that is to say a control mode, are identical to the exemplary embodiment from FIG. 1.

Abstract

The device (1) has a sensor device connected to an evaluation device (3). The sensor device is an air pressure measurement device and the evaluation device determines difference pressures from measurement signals of the air pressure measurement device and produces output signals depending on the different pressures. The air pressure measurement device has a single sensor (2) for outputting two air pressure measurement values at different times. An Independent claim is also included for the following: (a) a method of air extraction, especially for a vapor extractor.

Description

Die Erfindung betrifft eine Luftabzugsvorrichtung, insbesondere für eine Dunstabzugshaube, mit einer Sensorvorrichtung und einer damit verbundenen Auswertevorrichtung, sowie ein Verfahren einer Luftabzugsvorrichtung.The invention relates to an air extraction device, in particular for an extractor hood, with a sensor device and an associated evaluation device, and a Air extraction device method.

Dunstabzugshauben, die über Kochstellen angebracht sind, werden in den meisten Anwendungsfällen von Hand gesteuert. Aus dem Stand der Technik sind jedoch auch Dunstabzugshauben bekannt, die durch unterschiedliche Kriterien gesteuert oder geregelt werden.Extractor hoods, which are attached over hotplates, are used in most applications controlled by hand. However, extractor hoods are also from the prior art known, which are controlled or regulated by different criteria.

Derartige Luftabzugsvorrichtungen sind aus der DE 25 18 750 B2 bekannt. Die darin offenbarte Dunstabzugshaube umfasst zwei Temperaturfühler, die abhängig von Temperaturdifferenzen einen Ventilator steuern.Such air extraction devices are known from DE 25 18 750 B2. The one revealed in it Cooker hood includes two temperature sensors, which depend on temperature differences control a fan.

Ferner ist aus dem Gebrauchsmuster DE 76 33 882 eine Dunstabzugshaube bekannt, die eine Feuchtigkeitsfühlvorrichtung, bestehend aus einer Fühlsonde und einer Schalteinrichtung zum Ein-, Aus- und Umschalten des elektrisch betriebenen Ventilators der Dunstabzugshaube aufweist.Furthermore, an extractor hood is known from utility model DE 76 33 882, the one Moisture sensing device, consisting of a sensor probe and a switching device for Has switched on, off and switching over the electrically operated fan of the extractor hood.

Nachteil der herkömmlichen Dunstabzugshauben ist, dass ein erhöhter Unterdruck in der Küche entstehen kann, der die Öffnung von Türen und Fenstern erschweren kann und dass eine überdurchschnittliche Saugkraft auf andere Wohnungseinheiten ausgeübt wird, so dass Rauchabzugsgase aus Nebenräumen, zum Beispiel offenen Kaminen, in die Küche ziehen.The disadvantage of conventional extractor hoods is that there is an increased vacuum in the kitchen can arise, which can complicate the opening of doors and windows and that one Above-average suction power is exerted on other apartment units, so that smoke exhaust gases move into the kitchen from adjoining rooms, for example open fireplaces.

Aufgabe der Erfindung ist es, eine Luftabzugsvorrichtung zu verbessern und kritische Zustände in Betriebsräumen zu vermeiden. The object of the invention is to improve an air extraction device and critical conditions to avoid in operating rooms.

Die Aufgabe der eingangs bezeichneten Luftabzugsvorrichtung wird dadurch gelöst, dass die Sensorvorrichtung eine Luftdruckmessvorrichtung ist und die Auswertevorrichtung Differenzdrücke aus Messsignalen der Luftdruckmessvorrichtung ermittelt und in Abhängigkeit von diesen Differenzdrücken Ausgangssignale erzeugt.The task of the air extraction device described at the outset is achieved in that the Sensor device is an air pressure measuring device and the evaluation device differential pressures determined from measurement signals of the air pressure measuring device and in dependence thereon Differential pressures generated output signals.

Vorteile dieser Erfindung liegen darin, dass kritische Unterdruckzustände in Betriebsräumen, wie zum Beispiel in einer Küche, erfasst werden können und dadurch rechtzeitig eine Abhilfe gefunden werden kann. Es werden also die kritischen Zustände wie erschwerte Öffnung der Türen und Fenster im Betriebraum oder auch eine überdurchschnittliche Saugkraft auf andere Wohnungseinheiten vermieden.Advantages of this invention are that critical negative pressure conditions in operating rooms, such as in a kitchen, and can be remedied in good time can be found. So there are the critical conditions such as difficult opening of the Doors and windows in the operating room or an above-average suction power on others Housing units avoided.

Bevorzugt weist die Luftdruckmessvorrichtung einen einzigen Sensor zur Abgabe von mindestens zwei zeitlich beabstandeten Luftdruckmesswerten auf. Ein Filter zum Eliminieren von Umwelteinflüssen ist dem Sensor dabei nachgeschaltet. Dies hat den Vorteil, dass die Erfindung mit wenigen Bauelementen realisiert werden kann und einfach aufgebaut ist. Sie funktioniert trotz Umwelteinflüssen.The air pressure measuring device preferably has a single sensor for the delivery of at least two time-spaced air pressure measurements. A filter to eliminate Environmental influences follow the sensor. This has the advantage that the invention can be realized with few components and is simple to set up. It works despite environmental influences.

Vorteilhafterweise ist der Filter ein Bandpassfilter, dessen Untergrenze auf Umwelteinflüsse und dessen Obergrenze auf hochfrequente Störungen, wie zum Beispiel elektromagnetische Strahlung, ausgelegt ist. Dies hat den Vorteil, dass ein sehr sensitives System realisiert wird.The filter is advantageously a bandpass filter, the lower limit of which is due to environmental influences and its upper limit to high-frequency interference, such as electromagnetic Radiation. This has the advantage that a very sensitive system is implemented.

In einer weiteren bevorzugten Ausführungsform weist die Luftdruckmessvorrichtung einen Sensor zur Luftdruckmessung im Betriebsraum und einen Referenzsensor zur Luftdruckmessung in einem Referenzraum auf. Der Referenzraum muss nicht ein geschlossener Nebenraum sein, sondern kann auch die Umwelt außerhalb des Gebäudes sein. Vorteile dieser Ausführungsform liegen darin, dass der Referenzmesswert nicht gespeichert werden muss, dass die aktuellen Umgebungsbedingungen in dem zu vergleichenden Referenzluftdruckwert enthalten sind. Bei der Abspeicherung eines Referenzdruckwertes ist im Gegensatz dazu nur ein bestimmter Umgebungszustand abgespeichert.In a further preferred embodiment, the air pressure measuring device has a Sensor for air pressure measurement in the operating room and a reference sensor for air pressure measurement in a reference room. The reference room does not have to be a closed side room but can also be the environment outside the building. Advantages of this embodiment lie in the fact that the reference measured value does not have to be stored, that the current ambient conditions contained in the reference air pressure value to be compared are. In contrast, when a reference pressure value is saved, only a specific one is saved Environmental status saved.

Ein Vorteil ist es, wenn der oder die Sensoren zur Luftdruckmessung mit der Auswertevorrichtung drahtlos verbunden sind, denn dann entfällt eine aufwendige Verkabelung und Beschädigung des Betriebsraums sowie des eventuellen Referenzraums durch das Ziehen von Verbindungskabeln.It is an advantage if the sensor or sensors for air pressure measurement with the evaluation device are connected wirelessly, because then there is no need for complex cabling and damage the operating room and the possible reference room by pulling connecting cables.

Bevorzugt ist die Auswertevorrichtung mit einem Signalgeber verbunden. Dies hat den Vorteil dass ein aktueller oder kritischer Zustand rechtzeitig mitgeteilt werden kann. Der Signalgeber kann zum Beispiel ein akustisches Signal oder optisches Signal abgeben oder eine Anzeige aufweisen. Eine Bedienperson kann dann die Luftabzugsvorrichtung entsprechend steuern, zum Beispiel indem der Luftdurchsatz der Haube herabgesetzt wird oder der Betriebsraum zusätzlich belüftet wird.The evaluation device is preferably connected to a signal transmitter. This has the advantage that a current or critical condition can be communicated in good time. The signal generator can emit an acoustic signal or optical signal, for example, or have a display. An operator can then control the air extraction device accordingly, for example by reducing the air throughput of the hood or the operating room additionally is ventilated.

Die Luftabzugsvorrichtung kann in einer bevorzugten Ausführungsform auch eine Regelung aufweisen, mit welcher der Luftabzug direkt geregelt wird, bei der die Auswertevorrichtung Bestandteil dieser Regelung ist. Das hat den Vorteil, dass kritische Zustände automatisch vermieden werden und nicht vom Einsatz einer Bedienperson abhängen.In a preferred embodiment, the air extraction device can also have a regulation, with which the air extraction is controlled directly, in which the evaluation device is a component this scheme is. This has the advantage that critical conditions are automatically avoided and do not depend on the commitment of an operator.

Es kann vorteilhaft sein, dass der Regelung eine manuelle Steuerrichtung überlagert ist. Somit kann eine Bedienperson immer noch in den Luftabzug eingreifen, wenn Zustände auftreten, die die Sensoreinrichtung nicht erfasst beziehungsweise wenn die Regelung nicht schnell genug reagiert.It can be advantageous that a manual control direction is superimposed on the regulation. Consequently an operator can still intervene in the air vent when conditions occur the sensor device is not detected or if the control does not react quickly enough.

Die Lösung dieser Aufgabe gelingt auch mit einem Luftabzugsverfahren. Es weist folgende Verfahrensschritte auf: ein Differenzdruck mit der Sensorvorrichtung wird gemessen und Ausgangssignale werden mit der Auswertevorrichtung in Abhängigkeit der gemessenen Differenzdrücke ausgegeben.This problem can also be solved with an air extraction process. It has the following procedural steps on: a differential pressure with the sensor device is measured and output signals with the evaluation device depending on the measured differential pressures output.

Bei einem bevorzugten Verfahren wird der Differenzdruck aus zeitlich beabstandeten Sensormessewerten ermittelt. Dies hat den Vorteil, dass nur ein einziger Sensor zur Luftdruckmessung erforderlich ist.In a preferred method, the differential pressure is derived from sensor measurements that are spaced apart in time determined. This has the advantage that only a single sensor is required for air pressure measurement is.

Bei einem weiteren vorteilhaften Verfahren wird der Differenzdruck aus örtlich verschieden aufgenommenen Sensormesswerten ermittelt. Dadurch können die aktuellen Umgebungsbedingungen eliminiert werden. In a further advantageous method, the differential pressure is recorded from different locations Sensor measured values determined. This allows the current Environmental conditions are eliminated.

Die Erfindung wird nachfolgend anhand von zwei in der Zeichnung dargestellten Ausführungsbeispielen weiter erläutert. Es zeigen schematisch:

  • Figur 1 einen Aufbau einer Luftabzugsvorrichtung mit einem einzigen Sensor zur Luftdruckmessung und
  • Figur 2 den Aufbau einer Luftabzugsvorrichtung wie Figur 1 jedoch mit einem Sensor zur Luftdruckmessung im Betriebsraum und einem Referenzsensor in einem Referenzraum.
  • The invention is further explained below using two exemplary embodiments shown in the drawing. They show schematically:
  • Figure 1 shows a structure of an air extraction device with a single sensor for air pressure measurement and
  • FIG. 2 shows the construction of an air extraction device as in FIG. 1 but with a sensor for measuring air pressure in the operating room and a reference sensor in a reference room.
  • Die Figur 1 zeigt eine Luftabzugsvorrichtung 1 in einem Betriebsraum 5. An der Luftabzugsvorrichtung 1 befindet sich ein Sensor 2 zur Luftdruckmessung. Dem Sensor 2 ist ein Bandpassfilter 4 nachgeschaltet. Der Bandpassfilter ist mit einer Auswertevorrichtung 3 verbunden. Die Auswertevorrichtung 3 enthält einen Speicher 11. Ein Temperatursensor 10 ist auch mit der Auswertevorrichtung 3 verbunden. Der Temperatursensor 10 ist zweckmäßigerweise am Sensor 2 angeordnet. Die Auswertevorrichtung steuert einen Signalgeber 7 an und einen Luftabzug 8. Der Signalgeber 7 weist gemäß Figur 1 ein Display und zwei Signallampen auf. Eine manuelle Steuereinrichtung 9 ist mit der Auswertevorrichtung verbunden, um den Luftabzug 8 anzusteuern.FIG. 1 shows an air extraction device 1 in an operating room 5. On the air extraction device 1 there is a sensor 2 for air pressure measurement. Sensor 2 is a bandpass filter 4 downstream. The bandpass filter is connected to an evaluation device 3. The Evaluation device 3 contains a memory 11. A temperature sensor 10 is also with the evaluation device 3 connected. The temperature sensor 10 is expediently on the sensor 2 arranged. The evaluation device controls a signal generator 7 and an air vent 8 1 has a display and two signal lamps. A manual control device 9 is connected to the evaluation device in order to control the air vent 8.

    Der Sensor 2 funktioniert in Verbindung mit der Auswertevorrichtung und dem Bandpassfilter wie ein Barometer mit einer absoluten Druckmessung. Mit dem Sensor 2 wird beim Einschalten des Luftabzugs 8 der aktuelle Luftdruck gemessen. Über dem Bandpassfilter werden die Umwelteinflüsse im Bereich von 0 bis 10 Hz als untere Schwelle und hochfrequente Störungen, im Bereich von 40 bis 200 Hz als obere Schwelle eliminiert. Diese Messwerte werden in der Auswertevorrichtung 3 in einem Speicher 11 festgehalten. Es wird ein Histogramm mit mindestens 10 bis 100000 Messwerten erstellt, dessen Verlauf bewertet wird. Die Messung erfolgt im 0,01 mbar-Bereich. Somit werden Druckunterschiede zwischen 4 bis 5 Pa erkannt.The sensor 2 works in conjunction with the evaluation device and the bandpass filter a barometer with an absolute pressure measurement. With sensor 2, when the Discharge 8 the current air pressure measured. The environmental influences are above the bandpass filter in the range from 0 to 10 Hz as the lower threshold and high-frequency interference, in the range from 40 to 200 Hz eliminated as the upper threshold. These measured values are in the evaluation device 3 held in a memory 11. There will be a histogram with at least 10 to 100,000 measured values created, the course of which is evaluated. The measurement takes place in the 0.01 mbar range. Differences in pressure between 4 and 5 Pa are recognized.

    Um Temperaturfehler zu vermeiden, misst ein Temperatursensor 10 die Temperatur und gibt diese Werte an die Auswertevorrichtung weiter, die eine Temperaturkompensation von 0,00002 ppm/°C vornimmt.In order to avoid temperature errors, a temperature sensor 10 measures the temperature and gives these values to the evaluation device, which has a temperature compensation of 0.00002 ppm / ° C.

    Beim Überschreiten oder Unterschreiten eines bestimmten Druckdifferenzgrenzwertes, der entweder werkseitig oder manuell, zum Beispiel über die manuelle Steuereinrichtung 9, vorher eingegeben ist, erzeugt die Auswertevorrichtung 3 Ausgangssignale. Diese Ausgangssignale sind abhängig von der ermittelten Druckdifferenz. Die Druckdifferenzgrenzwerte liegen zwischen 0 - 5 mbar.When a certain pressure difference limit is exceeded or fallen below, which either entered in the factory or manually, for example via the manual control device 9 is, the evaluation device 3 generates output signals. These output signals are dependent from the determined pressure difference. The pressure difference limits are between 0 - 5 mbar.

    In einem ersten Betriebsmodus l werden mit diesen Ausgangssignalen der Signalgeber 7 angesteuert. Eine Betriebsperson erkennt die Signale vom Signalgeber 7 und steuert dem entsprechend über die manuelle Steuereinrichtung 9 den Luftabzug 8 an.In a first operating mode I, the signal generator 7 is controlled with these output signals. An operator recognizes the signals from the signal generator 7 and controls it accordingly via the manual control device 9 to the air vent 8.

    In einem zweiten Betriebsmodus II wird der Luftabzug 8 über die Auswertevorrichtung 3 direkt angesteuert, so dass die Kombination Sensor und Auswertevorrichtung Bestandteil einer Regelung sind. Der Signalgeber 7 zeigt die Ausgangssignale der Auswertevorrichtung 3 für die Bedienperson zur Kontrolle dabei gleichzeitig an.In a second operating mode II, the air vent 8 is directly via the evaluation device 3 controlled so that the combination of sensor and evaluation device is part of a control system are. The signal generator 7 shows the output signals of the evaluation device 3 for the operator to check at the same time.

    Grundsätzlich wird der Luftabzug in festen Geschwindigkeitsstufen angesteuert. In einem dritten Betriebsmodus III wird der Luftabzug 8 stufenlos zur gemessenen Druckdifferenz geregelt bzw. von der manuellen Steuereinrichtung 9 stufenlos angesteuert.Basically, the air extraction is controlled at fixed speed levels. In a third Operating mode III, the air vent 8 is regulated continuously to the measured pressure difference or continuously controlled by the manual control device 9.

    Die manuelle Steuereinrichtung ist der Regelung in Verbindung mit der Auswertevorrichtung überlagert, so dass eine Bedienperson den Luftabzug 8 immer direkt ansteuern kann.The manual control device is superimposed on the regulation in connection with the evaluation device, so that an operator can always control the air vent 8 directly.

    Bei jedem neuen Einschalten der Luftabzugsvorrichtung wird auf den aktuellen Luftdruckwert Bezug genommen.Each time the air extraction device is switched on, the current air pressure value is set Referred.

    Die Figur 2 zeigt eine Luftabzugsvorrichtung 1 in einer zweiten Ausführungsform mit einem Sensor zur Luftdruckmessung in einem Betriebsraum 5 und einem Referenzsensor 2' in einem Referenzraum 6. Der Unterschied zur ersten Ausführungsform besteht darin, dass ein Temperatursensor 10 sowie ein Bandpassfilter 4 nicht notwendig sind. Ein Speicher 11 in der Auswertevorrichtung ist auch nicht erforderlich. Aus den aktuellen Werten des Sensors 2 und des Referenzsensors 2' werden aktuelle Differenzdruckwerte in der Auswertevorrichtung 3 durch Vergleichen der beiden Messwerte ermittelt. Die zwei Betriebsmodi, einem ersten Betriebsmodus l mit einer manuellen Ansteuerung des Luftabzugs 8 über die manuelle Steuereinrichtung 9 und einem zweiten Betriebsmodus II, also einem Regelungsmodus, sind identisch mit dem Ausführungsbeispiel aus Figur 1.FIG. 2 shows an air extraction device 1 in a second embodiment with a sensor for air pressure measurement in an operating room 5 and a reference sensor 2 'in a reference room 6. The difference to the first embodiment is that a temperature sensor 10 and a bandpass filter 4 are not necessary. A memory 11 in the evaluation device is also not required. From the current values of sensor 2 and the reference sensor 2 'current differential pressure values in the evaluation device 3 are compared of the two measured values. The two operating modes, a first operating mode l with a manual control of the air vent 8 via the manual control device 9 and one second operating mode II, that is to say a control mode, are identical to the exemplary embodiment from FIG. 1.

    Claims (11)

    Luftabzugsvorrichtung (1), insbesondere für eine Dunstabzugshaube, mit einer Sensorvorrichtung und einer damit verbundenen Auswertevorrichtung,
    dadurch gekennzeichnet, dass die Sensorvorrichtung eine Luftdruckmessvorrichtung ist und die Auswertevorrichtung (3) Differenzdrücke aus Messsignalen der Luftdruckmessvorrichtung ermittelt und in Abhängigkeit von diesen Differenzdrücken Ausgangssignale erzeugt.
    Air extraction device (1), in particular for an extractor hood, with a sensor device and an evaluation device connected to it,
    characterized in that the sensor device is an air pressure measuring device and the evaluation device (3) determines differential pressures from measurement signals of the air pressure measuring device and generates output signals as a function of these differential pressures.
    Luftabzugsvorrichtung gemäß Anspruch 1,
    dadurch gekennzeichnet, dass die Luftdruckmessvorrichtung einen einzigen Sensor (2) zur Abgabe von mindestens zwei zeitlich beabstandeten Luftdruckmesswerten aufweist und dass dem Sensor (2) ein Filter zum Ausfiltern von Umwelteinflüssen nachgeschaltet ist.
    Air extraction device according to claim 1,
    characterized in that the air pressure measuring device has a single sensor (2) for delivering at least two time-spaced air pressure measured values and that the sensor (2) is followed by a filter for filtering out environmental influences.
    Luftabzugsvorrichtung gemäß Anspruch 2,
    dadurch gekennzeichnet, dass der Filter ein Bandpassfilter (4) ist, dessen Untergrenze auf Umwelteinflüsse und dessen Obergrenze auf hochfrequente Störungen ausgelegt ist.
    Air extraction device according to claim 2,
    characterized in that the filter is a bandpass filter (4), the lower limit of which is designed for environmental influences and the upper limit of which is designed for high-frequency interference.
    Luftabzugsvorrichtung gemäß Anspruch 1,
    dadurch gekennzeichnet, dass die Luftdruckmessvorrichtung einen Sensor (2) zur Luftdruckmessung im Betriebsraum (5) und einen Referenz-Sensor (2') zur Luftdruckmessung in einem Referenz-Raum (6) aufweist.
    Air extraction device according to claim 1,
    characterized in that the air pressure measuring device has a sensor (2) for measuring air pressure in the operating room (5) and a reference sensor (2 ') for measuring air pressure in a reference room (6).
    Luftdruckmessvorrichtung gemäß einem der Ansprüche 2 bis 4,
    dadurch gekennzeichnet, dass der oder die Sensoren zur Luftdruckmessung mit der Auswertevorrichtung (3) drahtlos verbunden sind.
    Air pressure measuring device according to one of claims 2 to 4,
    characterized in that the sensor or sensors for measuring the air pressure are wirelessly connected to the evaluation device (3).
    Luftabzugsvorrichtung gemäß einem der Ansprüche 1 bis 4,
    dadurch gekennzeichnet, dass die Auswertevorrichtung (3) mit einem Signalgeber (7) verbunden ist.
    Air extraction device according to one of claims 1 to 4,
    characterized in that the evaluation device (3) is connected to a signal transmitter (7).
    Luftabzugsvorrichtung gemäß einem der Ansprüche 1 bis 5,
    dadurch gekennzeichnet, dass die Auswertevorrichtung (3) ist Bestandteil einer Regelung, mit welcher der Luftabzug (8) geregelt wird.
    Air extraction device according to one of claims 1 to 5,
    characterized in that the evaluation device (3) is part of a regulation with which the air extraction (8) is regulated.
    Luftabzugsvorrichtung gemäß Anspruch 6,
    dadurch gekennzeichnet, dass der Regelung eine manuelle Steuereinrichtung (9) überlagert ist.
    Air extraction device according to claim 6,
    characterized in that a manual control device (9) is superimposed on the regulation.
    Luftabzugsverfahren, insbesondere für eine Dunstabzugshaube
    dadurch gekennzeichnet, dass ein Differenzdruck gemessen wird und in Abhängigkeit von den gemessenen Differenzdrücken der Luftabzug gesteuert wird.
    Air extraction process, in particular for an extractor hood
    characterized in that a differential pressure is measured and the air extraction is controlled as a function of the measured differential pressures.
    Verfahren gemäß Anspruch 9,
    dadurch gekennzeichnet, dass der Differenzdruck aus zeitlich beabstandeten Sensormesswerten ermittelt wird.
    Method according to claim 9,
    characterized in that the differential pressure is determined from temporally spaced sensor measured values.
    Verfahren gemäß Anspruch 9,
    dadurch gekennzeichnet, dass der Differenzdruck aus örtlich verschiedenen aufgenommenen Sensormesswerten ermittelt wird.
    Method according to claim 9,
    characterized in that the differential pressure is determined from locally different recorded sensor measured values.
    EP03006665A 2002-07-19 2003-03-25 Apparatus and method for air extraction Withdrawn EP1382914A3 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE2002132992 DE10232992A1 (en) 2002-07-19 2002-07-19 Air extraction device and air extraction method
    DE10232992 2002-07-19

    Publications (2)

    Publication Number Publication Date
    EP1382914A2 true EP1382914A2 (en) 2004-01-21
    EP1382914A3 EP1382914A3 (en) 2004-12-15

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    DE (1) DE10232992A1 (en)

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    WO2004090426A1 (en) * 2003-04-10 2004-10-21 BSH Bosch und Siemens Hausgeräte GmbH Control device for a fume extraction device
    DE102005063350B4 (en) * 2005-06-04 2008-04-24 Diehl Ako Stiftung & Co. Kg Hood
    CN102589025A (en) * 2012-02-17 2012-07-18 宁波方太厨具有限公司 Fan speed adaptive regulation device of range hood and control method thereof
    DE202012006361U1 (en) 2012-07-03 2013-10-09 Broko Gmbh Elektroproduktion Und Vertrieb Safety device for an exhaust air system
    GB2505146A (en) * 2012-04-11 2014-02-26 Graham Stanley Harrison Electronic local extract ventilation monitoring device
    CN106705160A (en) * 2016-12-11 2017-05-24 杭州老板电器股份有限公司 Fume sucking and discharge effect evaluation device and evaluation method

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    Cited By (6)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    WO2004090426A1 (en) * 2003-04-10 2004-10-21 BSH Bosch und Siemens Hausgeräte GmbH Control device for a fume extraction device
    DE102005063350B4 (en) * 2005-06-04 2008-04-24 Diehl Ako Stiftung & Co. Kg Hood
    CN102589025A (en) * 2012-02-17 2012-07-18 宁波方太厨具有限公司 Fan speed adaptive regulation device of range hood and control method thereof
    GB2505146A (en) * 2012-04-11 2014-02-26 Graham Stanley Harrison Electronic local extract ventilation monitoring device
    DE202012006361U1 (en) 2012-07-03 2013-10-09 Broko Gmbh Elektroproduktion Und Vertrieb Safety device for an exhaust air system
    CN106705160A (en) * 2016-12-11 2017-05-24 杭州老板电器股份有限公司 Fume sucking and discharge effect evaluation device and evaluation method

    Also Published As

    Publication number Publication date
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    DE10232992A1 (en) 2004-01-29

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