EP2444159A2 - Filter module and method for operating same - Google Patents

Filter module and method for operating same Download PDF

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Publication number
EP2444159A2
EP2444159A2 EP11184776A EP11184776A EP2444159A2 EP 2444159 A2 EP2444159 A2 EP 2444159A2 EP 11184776 A EP11184776 A EP 11184776A EP 11184776 A EP11184776 A EP 11184776A EP 2444159 A2 EP2444159 A2 EP 2444159A2
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EP
European Patent Office
Prior art keywords
fluid
field
region
filter module
filter
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Granted
Application number
EP11184776A
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German (de)
French (fr)
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EP2444159A3 (en
EP2444159B1 (en
Inventor
Abdullah Adar
Holger Eich
Daniel Metz
Volkmar Uebele
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BSH Hausgeraete GmbH
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BSH Bosch und Siemens Hausgeraete GmbH
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Priority to PL11184776T priority Critical patent/PL2444159T3/en
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Publication of EP2444159A3 publication Critical patent/EP2444159A3/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/02—Plant or installations having external electricity supply
    • B03C3/04—Plant or installations having external electricity supply dry type
    • B03C3/14—Plant or installations having external electricity supply dry type characterised by the additional use of mechanical effects, e.g. gravity
    • B03C3/155—Filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/66—Applications of electricity supply techniques
    • B03C3/68—Control systems therefor
    • 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

Definitions

  • the invention relates to a filter module for a domestic kitchen extractor hood for cleaning a fluid flowing through the filter module, for example a vapor stream.
  • Wrasen the resulting during cooking and / or baking exhaust air is called.
  • the essential components of Wrasens are air, water vapor, fat and organic odors.
  • Filter modules of the type mentioned serve primarily to eliminate odors.
  • Domestic kitchen extractor filter modules have characteristic features such that filter apparatuses for other applications are generally not suitable for use in household kitchen extractor hoods.
  • household kitchen extractors have an air flow of a uniform magnitude.
  • the space for the filter modules is usually limited by the dimensions of the household kitchen extractor hood.
  • care must be taken that the fat particles still contained in the vapor stream behind the grease filter do not impair the functionality of the filter module.
  • Filter modules which are designed especially for use in commercial kitchens, and thus in particular in terms of space and air flow rate are much larger, are for example from the publications DE 10 2004 053030 A1 .
  • the document describes DE 10 2004 053030 A1 a method for filtering out odors from an air flow and a filter device with an odor filter.
  • An odorant-containing air stream is passed through a filter device with an odor filter.
  • the odor filter has a filter material, for example activated carbon. At least a portion of the particles contained in the airflow is ionized and / or dissociated prior to entering the odor filter.
  • the publication DE 10 2008 062415 A1 shows an ionization device for air treatment plants.
  • the ionization device has two electrodes connected to a an alternating voltage generating high voltage source can be connected and between which dielectrically impeded discharge for generating a plasma can be brought about.
  • Each electrode has a deformable structure with an electrical conductor encased in a dielectric material.
  • the two deformable structures touch each other at least partially or have a sufficiently small distance from each other in order to bring about the dielectrically impeded discharge can.
  • the publication DE 10 2009 012680 A1 describes a method for cleaning an air flow and a cleaning device.
  • Method for cleaning an air flow In this case, a dielectrically impeded discharge is forced into an air flow containing impurities and odors. As a result, a plasma is generated before the air flow is then passed through activated carbon or a similar filter material. The air flow is deflected in an entrance area. Subsequently, the flow rate is reduced to force a centrifugal force deposition of particulate impurities.
  • the present invention has for its object to provide a concept for an improved filter module for a domestic kitchen extractor of the type mentioned.
  • the filter module is equipped with a field region having an alternating electric field and a separate reaction region arranged downstream of the field region, the flow cross section of the field region being smaller than the flow cross section of the reaction region. Because the flow cross section of the field region is smaller than the flow cross section of the reaction region, the field region is limited relative to the reaction region.
  • the limited field area causes an improved mixing or turbulence of the split by the alternating electric field fluid partial products, such as the molecules of the vapor.
  • the improved mixture or turbulence in turn causes improved reaction possibilities for the fluid partial products and prevents phase formation.
  • the short-lived reaction products of the fluid in particular of the vapor, can degrade and convert remaining substances of the fluid.
  • the filter module or air cleaner module is especially adapted for extractor hoods and kitchen odors and is suitable as an accessory.
  • the filter module is adapted to be arranged directly or indirectly above a fan box of a fume hood.
  • the invention results from the optimization of the flow in the filter module, a significant reduction in the noise level compared to the conventional extractor in recirculation mode.
  • the delivery volume through the filter module compared to a conventional extract air extractor, according to the extractor standard (IEC 61591 standard) can be increased significantly.
  • the odor reduction is measured according to extractor standard especially better than conventional convection extractors. Consequently, there is a significantly higher efficiency in the odor reduction compared to conventional adsorbers.
  • a filter module for cleaning of a fluid flowing through the filter module, in particular vapor, with a field region and a reaction region which is separate from the field region and arranged downstream in the flow direction of the fluid.
  • the field region is set up to expose the fluid to an alternating electric field for producing fluid partial products.
  • the fluid sub-products react with each other or with a filter medium.
  • the flow area of the field area is smaller than a flow area of the reaction area. Thereby, the field region becomes a guiding device for the fluid flow device. The fluid is forced into the field area for mixing and interaction with the field.
  • an inflow region upstream of the field region is provided for guiding the detected flowing fluid into the field region.
  • At least one sensor for detecting the flowing fluid is preferably arranged in the field region.
  • the inflow region has at least one pair of sensors for detecting the flowing fluid.
  • the inflow region in particular has at least one flap for guiding the flowing fluid into the field region which actuates the sensor or the sensors.
  • the filter module is in particular configured to generate an alternating field as a function of a flow velocity of the fluid, wherein the fluid in the field region is exposed to the alternating field.
  • the senor can also activate the generation of the alternating electric field in the field region. Consequently, the detection of the fluid or Wrasenstromes acts as a trigger for the activation of the alternating electric field.
  • a flap controls at least two sensors that trigger upon detection of the flowing fluid from a predetermined flow rate. That is, the alternating field is activated only from the predetermined flow rate.
  • the volume of the field region is smaller than the volume of the reaction region.
  • the reaction area surrounds the field area. This results in a compact design for the filter module.
  • the field region and the reaction region are arranged in a single housing.
  • the outer walls of the housing limit the reaction area.
  • a control device for controlling the electrodes of the field region and for receiving sensor signals of the at least two sensors is preferably arranged in a further housing.
  • the electrodes provided in the field region are arranged to generate the alternating electric field at a predetermined frequency.
  • the control device is designed to the electrodes in such a way to control that the generated alternating field has a field strength which is suitable for generating plasma and ionized particles in the flowing fluid.
  • the filter medium is provided in a preferred embodiment exclusively in the reaction area.
  • the filter medium has activated carbon and / or a catalytic material.
  • the reaction region has at least one filter receptacle for receiving at least one filter element or a filter medium.
  • At least one security element is preferably provided, which ensures the insertion of a predetermined type of filter module into the filter receptacle and prevents re-insertion of a used filter medium into the filter receptacle, in particular by destroying a recognition feature during initial insertion. Furthermore, operation without a filter is prevented.
  • a household kitchen extractor which has a filter module according to the invention as explained above.
  • a method for operating a filter module for cleaning a fluid flowing through the filter module, wherein the fluid in a field region is exposed to an electric field for generating fluid subproducts and the fluid subproducts are separated in a region separated from the field region Flow direction of the fluid downstream reaction region react with each other or with a filter medium.
  • the flow cross section of the field region is formed smaller than the flow cross section of the reaction region.
  • FIG. 1 a representation of an embodiment of a filter module 1 for cleaning of a fluid flowing through the filter module 1 is shown.
  • the fluid consists for example of vapors.
  • the filter module 1 has a field region 2 and a reaction region 4 which is separate from the field region 2 and arranged downstream in the flow direction 3 of the fluid.
  • the field region 2 the fluid is exposed to an alternating electric field for producing fluid partial products.
  • the reaction region 4 the generated fluid partial products react with each other and / or with a designated filter medium.
  • the flow cross section 5 of the field region 2 is smaller than the flow cross section 6 of the reaction region 4.
  • the volume of the field region 2 is smaller than the volume of the reaction region. 4
  • the reaction area 4 surrounds the field area 2 completely. This results in a compact construction of the filter module 1.
  • the field region 2 and the reaction region 4 are provided in a housing 8 of the filter module 1.
  • the housing 8 has an opening 9, in which an inflow region 7 is provided for detecting the flowing fluid and for guiding the detected flowing fluid into the field region 2.
  • the inflow region 7 is equipped with a sensor for detecting the flowing fluid or with at least one flap for guiding the flowing fluid and for controlling the sensors.
  • the field region 2 is equipped with electrodes (not shown).
  • the Fig. 2 shows a flowchart of an embodiment for operating a filter module for cleaning a fluid flowing through the filter module.
  • step S1 the flow is detected in the inflow and passed from the sensors a signal to the control electronics.
  • step S2 the fluid in a field region is exposed to an alternating electric field for generating fluid partial products.
  • step S3 the fluid partial products produced are conducted into a reaction region arranged downstream of the field region in the direction of flow, so that the fluid partial products produced react with one another or with a filter medium provided in the reaction region.
  • the flow cross-section of the field region is formed such that it is smaller than the flow cross section of the reaction region and is given a thorough mixing and intensive interaction with the field.

Abstract

The filter module (1) has a field region (2) in which alternating electric field for producing fluid partial products is produced, and a reaction region (4) in which the produced fluid partial products react with one another or with fluid filter mediums. The field region forms a guide portion for guiding the flow of fluid. The flow surface area (5) in field region is smaller than the flow surface area (6) in reaction region. An independent claim is included for method for operating filter module.

Description

Die Erfindung betrifft ein Filtermodul für einen Haushaltsküchendunstabzug zum Reinigen von einem das Filtermodul durchströmenden Fluid, beispielsweise einem Wrasenstrom.The invention relates to a filter module for a domestic kitchen extractor hood for cleaning a fluid flowing through the filter module, for example a vapor stream.

Als Wrasen wird die beim Kochen und/oder Backen entstehende Abluft bezeichnet. Die wesentlichen Bestandteile des Wrasens sind Luft, Wasserdampf, Fett und organische Geruchsstoffe. Filtermodule der eingangs genannten Art dienen in erster Linie der Beseitigung von Geruchsstoffen.As Wrasen the resulting during cooking and / or baking exhaust air is called. The essential components of Wrasens are air, water vapor, fat and organic odors. Filter modules of the type mentioned serve primarily to eliminate odors.

Filtermodule für Haushaltsküchendunstabzüge weisen charakteristische Besonderheiten auf, so dass Filtereinrichtungen für andere Anwendungen in der Regel nicht für den Einsatz in Haushaltsküchendunstabzügen geeignet sind. Beispielsweise besitzen Haushaltsküchendunstabzüge einen Luftdurchsatz in einer einheitlichen Größenordnung. Der Bauraum für die Filtermodule ist in der Regel durch die Abmessungen des Haushaltsküchendunstabzugs begrenzt. Darüber hinaus muss darauf geachtet werden, dass die in dem Wrasenstrom auch hinter dem Fettfilter noch enthaltenen Fettpartikel die Funktionsfähigkeit des Filtermoduls nicht beeinträchtigen.Domestic kitchen extractor filter modules have characteristic features such that filter apparatuses for other applications are generally not suitable for use in household kitchen extractor hoods. For example, household kitchen extractors have an air flow of a uniform magnitude. The space for the filter modules is usually limited by the dimensions of the household kitchen extractor hood. In addition, care must be taken that the fat particles still contained in the vapor stream behind the grease filter do not impair the functionality of the filter module.

Filtermodule, die insbesondere für den Einsatz in gewerblichen Küchen ausgelegt sind, und damit insbesondere hinsichtlich Bauraum und Luftdurchsatz weitaus größer dimensioniert sind, sind beispielsweise aus den Druckschriften DE 10 2004 053030 A1 , DE 10 2008 062415 A1 und DE 10 2009 012680 A1 bekannt.Filter modules, which are designed especially for use in commercial kitchens, and thus in particular in terms of space and air flow rate are much larger, are for example from the publications DE 10 2004 053030 A1 . DE 10 2008 062415 A1 and DE 10 2009 012680 A1 known.

Dabei beschreibt die Druckschrift DE 10 2004 053030 A1 ein Verfahren zum Herausfiltern von Gerüchen aus einer Luftströmung und eine Filtervorrichtung mit einem Geruchsfilter. Ein Geruchsstoffe enthaltender Luftstrom wird durch eine Filtervorrichtung mit einem Geruchsfilter hindurchgeführt. Der Geruchsfilter hat ein Filtermaterial, zum Beispiel Aktivkohle. Zumindest ein Teil der in der Luftströmung enthaltenen Teilchen wird vor dem Eintritt in den Geruchsfilter ionisiert und/oder dissoziiert.The document describes DE 10 2004 053030 A1 a method for filtering out odors from an air flow and a filter device with an odor filter. An odorant-containing air stream is passed through a filter device with an odor filter. The odor filter has a filter material, for example activated carbon. At least a portion of the particles contained in the airflow is ionized and / or dissociated prior to entering the odor filter.

Die Druckschrift DE 10 2008 062415 A1 zeigt eine lonisierungsvorrichtung für Luftbehandlungsanlagen. Die lonisierungsvorrichtung hat zwei Elektroden, die mit einer eine Wechselspannung erzeugenden Hochspannungsquelle verbindbar sind und zwischen denen dielektrisch behinderte Entladung zur Erzeugung eines Plasmas herbeigeführt werden kann. Jede Elektrode hat ein verformbares Gebilde mit einem elektrischen Leiter, der mit einem dielektrischen Material ummantelt ist. Die beiden verformbaren Gebilde berühren sich mindestens bereichsweise oder haben einen ausreichend geringen Abstand zueinander, um die dielektrisch behinderte Entladung herbeiführen zu können.The publication DE 10 2008 062415 A1 shows an ionization device for air treatment plants. The ionization device has two electrodes connected to a an alternating voltage generating high voltage source can be connected and between which dielectrically impeded discharge for generating a plasma can be brought about. Each electrode has a deformable structure with an electrical conductor encased in a dielectric material. The two deformable structures touch each other at least partially or have a sufficiently small distance from each other in order to bring about the dielectrically impeded discharge can.

Die Druckschrift DE 10 2009 012680 A1 beschreibt ein Verfahren zur Reinigung einer Luftströmung und eine Reinigungsvorrichtung. Verfahren zur Reinigung einer Luftströmung. Dabei wird in einer Verunreinigungen und Gerüche enthaltenden Luftströmung eine dielektrisch behinderte Entladung erzwungen. Dadurch wird ein Plasma erzeugt, bevor die Luftströmung anschließend durch Aktivkohle oder ein vergleichbares Filtermaterial geführt wird. Die Luftströmung wird in einem Eingangsbereich umgelenkt. Anschließend wird die Strömungsgeschwindigkeit vermindert, um eine fliehkraftbedingte Abscheidung von partikelförmigen Verunreinigungen zu erzwingen.The publication DE 10 2009 012680 A1 describes a method for cleaning an air flow and a cleaning device. Method for cleaning an air flow. In this case, a dielectrically impeded discharge is forced into an air flow containing impurities and odors. As a result, a plasma is generated before the air flow is then passed through activated carbon or a similar filter material. The air flow is deflected in an entrance area. Subsequently, the flow rate is reduced to force a centrifugal force deposition of particulate impurities.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein Konzept für ein verbessertes Filtermodul für einen Haushaltsküchendunstabzug der eingangs genannten Art zur Verfügung zu stellen.The present invention has for its object to provide a concept for an improved filter module for a domestic kitchen extractor of the type mentioned.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass das Filtermodul mit einem Feldbereich mit einem elektrischen Wechselfeld und einem dem Feldbereich nachgeordneten, getrennten Reaktionsbereich ausgestattet wird, wobei der Durchflussquerschnitt des Feldbereiches kleiner als der Durchflussquerschnitt des Reaktionsbereiches ausgebildet ist. Dadurch, dass der Durchflussquerschnitt des Feldbereiches kleiner als der Durchflussquerschnitt des Reaktionsbereiches ist, ist der Feldbereich gegenüber dem Reaktionsbereich eingegrenzt.This object is achieved according to the invention in that the filter module is equipped with a field region having an alternating electric field and a separate reaction region arranged downstream of the field region, the flow cross section of the field region being smaller than the flow cross section of the reaction region. Because the flow cross section of the field region is smaller than the flow cross section of the reaction region, the field region is limited relative to the reaction region.

Folglich ergibt sich eine erzwungene Führung des Fluides durch den eingegrenzten Feldbereich. Der eingegrenzte Feldbereich bewirkt eine verbesserte Mischung oder Verwirbelung der durch das elektrische Wechselfeld aufgespalteten Fluidteilprodukte, z.B. der Moleküle des Wrasen. Die verbesserte Mischung oder Verwirbelung bewirkt wiederum verbesserte Reaktionsmöglichkeiten für die Fluidteilprodukte und verhindert Phasenbildung.Consequently, there is a forced guidance of the fluid through the limited field area. The limited field area causes an improved mixing or turbulence of the split by the alternating electric field fluid partial products, such as the molecules of the vapor. The improved mixture or turbulence in turn causes improved reaction possibilities for the fluid partial products and prevents phase formation.

Im Reaktionsbereich des Filtermoduls können sich die kurzlebigen Reaktionsprodukte des Fluides, insbesondere des Wrasen, abbauen und verbleibende Stoffe des Fluides umwandeln. Das Filtermodul oder Luftreinigermodul ist insbesondere für Dunstabzüge und auf Küchengerüche angepasst und als Zubehör geeignet. Insbesondere ist das Filtermodul dazu eingerichtet, direkt oder indirekt über einem Lüfterkasten eines Dunstabzugs angeordnet zu werden.In the reaction zone of the filter module, the short-lived reaction products of the fluid, in particular of the vapor, can degrade and convert remaining substances of the fluid. The filter module or air cleaner module is especially adapted for extractor hoods and kitchen odors and is suitable as an accessory. In particular, the filter module is adapted to be arranged directly or indirectly above a fan box of a fume hood.

Erfindungsgemäß ergibt sich durch die Optimierung der Strömung im Filtermodul eine deutliche Reduzierung des Geräuschpegels im Vergleich zum konventionellen Dunstabzug im Umluftbetrieb. In Abhängigkeit des verwendeten Lüfters kann das Fördervolumen durch das Filtermodul, im Vergleich zu einem Dunstabzug in konventionellem Umluftbetrieb, nach Dunstabzugsnorm (Norm IEC 61591) gemessen deutlich erhöht werden. Die Geruchsreduzierung ist nach Dunstabzugsnorm gemessen insbesondere besser als konventionelle Umluftdunstabzüge. Folglich ergibt sich eine deutlich höhere Effektivität in der Geruchsreduzierung im Vergleich zu herkömmlichen Adsorbern.According to the invention results from the optimization of the flow in the filter module, a significant reduction in the noise level compared to the conventional extractor in recirculation mode. Depending on the fan used, the delivery volume through the filter module, compared to a conventional extract air extractor, according to the extractor standard (IEC 61591 standard), can be increased significantly. The odor reduction is measured according to extractor standard especially better than conventional convection extractors. Consequently, there is a significantly higher efficiency in the odor reduction compared to conventional adsorbers.

Demgemäß wird ein Filtermodul zum Reinigen von einem das Filtermodul durchströmenden Fluid, insbesondere Wrasen, mit einem Feldbereich und einem von dem Feldbereich getrennten, in Durchströmrichtung des Fluides nachgeordneten Reaktionsbereich vorgeschlagen. Der Feldbereich ist dazu eingerichtet, das Fluid einem elektrischen Wechselfeld zum Erzeugen von Fluidteilprodukten auszusetzen. In dem nachgeordneten Reaktionsbereich reagieren die Fluidteilprodukte miteinander oder mit einem Filtermedium. Der Durchflussquerschnitt des Feldbereichs ist kleiner als ein Durchflussquerschnitt des Reaktionsbereiches. Dadurch wird der Feldbereich als eine Führungsvorrichtung zur Strömungsvorrichtung des Fluides. Das Fluid wird im Feldbereich zur Durchmischung und Wechselwirkung mit dem Feld gezwungen.Accordingly, a filter module is proposed for cleaning of a fluid flowing through the filter module, in particular vapor, with a field region and a reaction region which is separate from the field region and arranged downstream in the flow direction of the fluid. The field region is set up to expose the fluid to an alternating electric field for producing fluid partial products. In the downstream reaction region, the fluid sub-products react with each other or with a filter medium. The flow area of the field area is smaller than a flow area of the reaction area. Thereby, the field region becomes a guiding device for the fluid flow device. The fluid is forced into the field area for mixing and interaction with the field.

Insbesondere ist ein dem Feldbereich vorgeordneter Einströmbereich zum Leiten des erkannten strömenden Fluides in den Feldbereich vorgesehen. In dem Feldbereich ist vorzugsweise zumindest ein Sensor zum Erkennen des strömenden Fluides angeordnet. Vorzugsweise hat der Einströmbereich zumindest ein Sensorpaar zum Erkennen des strömenden Fluides.In particular, an inflow region upstream of the field region is provided for guiding the detected flowing fluid into the field region. At least one sensor for detecting the flowing fluid is preferably arranged in the field region. Preferably, the inflow region has at least one pair of sensors for detecting the flowing fluid.

Ferner hat der Einströmbereich insbesondere zumindest eine Klappe zum Leiten des strömenden Fluides in den Feldbereich, die den Sensor oder die Sensoren ansteuert.In addition, the inflow region in particular has at least one flap for guiding the flowing fluid into the field region which actuates the sensor or the sensors.

Das Filtermodul ist insbesondere dazu eingerichtet, ein Wechselfeld in Abhängigkeit einer Strömungsgeschwindigkeit des Fluids zu erzeugen, wobei das Fluid in dem Feldbereich dem Wechselfeld ausgesetzt wird.The filter module is in particular configured to generate an alternating field as a function of a flow velocity of the fluid, wherein the fluid in the field region is exposed to the alternating field.

Der Sensor kann insbesondere auch die Erzeugung des elektrischen Wechselfeldes in dem Feldbereich aktivieren. Folglich wirkt die Erkennung des Fluid- oder Wrasenstromes als ein Auslöser für die Aktivierung des elektrischen Wechselfeldes. Dabei steuert eine Klappe zumindest zwei Sensoren, die bei Erkennen des strömenden Fluides ab einer vorgegebenen Strömungsgeschwindigkeit auslösen. D.h., das Wechselfeld wird erst ab der vorgegebenen Strömungsgeschwindigkeit aktiviert.In particular, the sensor can also activate the generation of the alternating electric field in the field region. Consequently, the detection of the fluid or Wrasenstromes acts as a trigger for the activation of the alternating electric field. In this case, a flap controls at least two sensors that trigger upon detection of the flowing fluid from a predetermined flow rate. That is, the alternating field is activated only from the predetermined flow rate.

Vorzugsweise ist das Volumen des Feldbereiches kleiner als das Volumen des Reaktionsbereiches. In einer bevorzugten Ausführungsform umgibt der Reaktionsbereich den Feldbereich. Damit ergibt sich ein kompakter Aufbau für das Filtermodul.Preferably, the volume of the field region is smaller than the volume of the reaction region. In a preferred embodiment, the reaction area surrounds the field area. This results in a compact design for the filter module.

Beispielsweise sind der Feldbereich und der Reaktionsbereich in einem einzigen Gehäuse angeordnet. Insbesondere begrenzen die Außenwände des Gehäuses den Reaktionsbereich.For example, the field region and the reaction region are arranged in a single housing. In particular, the outer walls of the housing limit the reaction area.

Eine Steuervorrichtung zum Steuern der Elektroden des Feldbereiches und zum Aufnehmen von Sensorsignalen der zumindest zwei Sensoren ist vorzugsweise in einem weiteren Gehäuse angeordnet.A control device for controlling the electrodes of the field region and for receiving sensor signals of the at least two sensors is preferably arranged in a further housing.

Insbesondere sind die Elektroden, die in dem Feldbereich vorgesehen sind, zum Erzeugen des elektrischen Wechselfeldes mit einer vorgegebenen Frequenz eingerichtet. Vorzugsweise ist dabei die Steuerungsvorrichtung dazu ausgebildet, die Elektroden derart anzusteuern, dass das erzeugte Wechselfeld eine Feldstärke hat, welche zum Erzeugen von Plasma und ionisierten Teilchen im durchströmenden Fluid geeignet ist.In particular, the electrodes provided in the field region are arranged to generate the alternating electric field at a predetermined frequency. Preferably, the control device is designed to the electrodes in such a way to control that the generated alternating field has a field strength which is suitable for generating plasma and ionized particles in the flowing fluid.

Das Filtermedium ist in einer bevorzugten Ausführungsform ausschließlich in dem Reaktionsbereich vorgesehen. Insbesondere hat das Filtermedium Aktivkohle und/oder ein katalytisches Material.The filter medium is provided in a preferred embodiment exclusively in the reaction area. In particular, the filter medium has activated carbon and / or a catalytic material.

In einer bevorzugten Ausführungsform weist der Reaktionsbereich zumindest eine Filteraufnahme zum Aufnehmen zumindest eines Filterelementes oder eines Filtermediums auf.In a preferred embodiment, the reaction region has at least one filter receptacle for receiving at least one filter element or a filter medium.

Des Weiteren ist bevorzugt zumindest ein Sicherheitselement vorgesehen, welches das Einsetzen einer vorbestimmten Art des Filtermoduls in die Filteraufnahme sicherstellt und ein Wiedereinsetzen eines benutzten Filtermediums in die Filteraufnahme, insbesondere durch Zerstörung eines Erkennungsmerkmals beim erstmaligen Einsetzen, verhindert. Ferner ist auch ein Betrieb ohne Filter verhindert.Furthermore, at least one security element is preferably provided, which ensures the insertion of a predetermined type of filter module into the filter receptacle and prevents re-insertion of a used filter medium into the filter receptacle, in particular by destroying a recognition feature during initial insertion. Furthermore, operation without a filter is prevented.

Gemäß einem weiteren Aspekt der Erfindung wird ein Haushaltsküchendunstabzug vorgeschlagen, welcher ein wie oben erläutertes erfindungsgemäßes Filtermodul aufweist.According to a further aspect of the invention, a household kitchen extractor is proposed, which has a filter module according to the invention as explained above.

Gemäß einem weiteren Aspekt der Erfindung wird ein Verfahren zum Betreiben eines Filtermoduls zum Reinigen von einem das Filtermodul durchströmenden Fluid vorgeschlagen, wobei das Fluid in einem Feldbereich einem elektrischen Feld zum Erzeugen von Fluidteilprodukten ausgesetzt wird und die erzeugten Fluidteilprodukte in einem von dem Feldbereich getrennten, in Durchströmrichtung des Fluides nachgeordneten Reaktionsbereich miteinander oder mit einem Filtermedium reagieren. Der Durchflussquerschnitt des Feldbereiches wird kleiner als der Durchflussquerschnitt des Reaktionsbereiches ausgebildet.According to a further aspect of the invention, a method is proposed for operating a filter module for cleaning a fluid flowing through the filter module, wherein the fluid in a field region is exposed to an electric field for generating fluid subproducts and the fluid subproducts are separated in a region separated from the field region Flow direction of the fluid downstream reaction region react with each other or with a filter medium. The flow cross section of the field region is formed smaller than the flow cross section of the reaction region.

Weitere Vorteile und Einzelheiten der Erfindung werden anhand der in den schematischen Figuren dargestellten Ausführungsbeispiele näher erläutert. Dabei zeigt:

Fig. 1
eine schematische Darstellung eines Ausführungsbeispiels eines Filtermoduls; und
Fig. 2
ein schematisches Ablaufdiagramm eines Ausführungsbeispiels eines Verfahrens zum Betreiben eines Filtermoduls.
Further advantages and details of the invention will be explained in more detail with reference to the embodiments illustrated in the schematic figures. Showing:
Fig. 1
a schematic representation of an embodiment of a filter module; and
Fig. 2
a schematic flow diagram of an embodiment of a method for operating a filter module.

In der Fig. 1 ist eine Darstellung eines Ausführungsbeispiels eines Filtermoduls 1 zum Reinigen von einem das Filtermodul 1 durchströmenden Fluid dargestellt. Das Fluid besteht beispielsweise aus Wrasen. Das Filtermodul 1 hat einen Feldbereich 2 und einen von dem Feldbereich 2 getrennten, in Durchströmrichtung 3 des Fluides nachgeordneten Reaktionsbereich 4. In dem Feldbereich 2 wird das Fluid einem elektrischen Wechselfeld zum Erzeugen von Fluidteilprodukten ausgesetzt. In dem Reaktionsbereich 4 reagieren die erzeugten Fluidteilprodukte miteinander und/oder mit einem vorgesehenen Filtermedium.In the Fig. 1 a representation of an embodiment of a filter module 1 for cleaning of a fluid flowing through the filter module 1 is shown. The fluid consists for example of vapors. The filter module 1 has a field region 2 and a reaction region 4 which is separate from the field region 2 and arranged downstream in the flow direction 3 of the fluid. In the field region 2, the fluid is exposed to an alternating electric field for producing fluid partial products. In the reaction region 4, the generated fluid partial products react with each other and / or with a designated filter medium.

Der Durchflussquerschnitt 5 des Feldbereiches 2 ist kleiner als der Durchflussquerschnitt 6 des Reaktionsbereiches 4. Insbesondere ist das Volumen des Feldbereiches 2 kleiner als das Volumen des Reaktionsbereiches 4.The flow cross section 5 of the field region 2 is smaller than the flow cross section 6 of the reaction region 4. In particular, the volume of the field region 2 is smaller than the volume of the reaction region. 4

Wie in Fig. 1 gezeigt, umgibt der Reaktionsbereich 4 den Feldbereich 2 vollständig. Damit ergibt sich ein kompakter Aufbau des Filtermoduls 1. Der Feldbereich 2 und der Reaktionsbereich 4 sind in einem Gehäuse 8 des Filtermoduls 1 vorgesehen. Das Gehäuse 8 hat eine Öffnung 9, in welchem ein Einströmbereich 7 zum Erkennen des strömenden Fluides und zum Leiten des erkannten strömenden Fluides in den Feldbereich 2 vorgesehen ist.As in Fig. 1 shown, the reaction area 4 surrounds the field area 2 completely. This results in a compact construction of the filter module 1. The field region 2 and the reaction region 4 are provided in a housing 8 of the filter module 1. The housing 8 has an opening 9, in which an inflow region 7 is provided for detecting the flowing fluid and for guiding the detected flowing fluid into the field region 2.

Beispielsweise ist der Einströmbereich 7 mit einem Sensor zum Erkennen des strömenden Fluides oder mit zumindest einer Klappe zum Leiten des strömenden Fluids und zur Ansteuerung der Sensoren ausgestattet. Zum Erzeugen des elektrischen Wechselfeldes ist der Feldbereich 2 mit Elektroden (nicht gezeigt) ausgestattet.For example, the inflow region 7 is equipped with a sensor for detecting the flowing fluid or with at least one flap for guiding the flowing fluid and for controlling the sensors. For generating the alternating electric field, the field region 2 is equipped with electrodes (not shown).

Die Fig. 2 zeigt ein Ablaufdiagramm eines Ausführungsbeispiels zum Betreiben eines Filtermoduls zum Reinigen von einem das Filtermodul durchströmenden Fluids.The Fig. 2 shows a flowchart of an embodiment for operating a filter module for cleaning a fluid flowing through the filter module.

In Schritt S1 wird die Strömung im Einströmbereich erkannt und von den Sensoren ein Signal an die Steuerelektronik weitergegeben.In step S1, the flow is detected in the inflow and passed from the sensors a signal to the control electronics.

In Schritt S2 wird das Fluid in einem Feldbereich einem elektrischen Wechselfeld zum Erzeugen von Fluidteilprodukten ausgesetzt.
Die erzeugten Fluidteilprodukte werden in einem Schritt S3 in einen von dem Feldbereich getrennten, in Durchströmrichtung nachgeordneten Reaktionsbereich geleitet, so dass die erzeugten Fluidteilprodukte miteinander oder mit einem in dem Reaktionsbereich vorgesehenen Filtermedium reagieren.In step S2, the fluid in a field region is exposed to an alternating electric field for generating fluid partial products.
In a step S3, the fluid partial products produced are conducted into a reaction region arranged downstream of the field region in the direction of flow, so that the fluid partial products produced react with one another or with a filter medium provided in the reaction region.

Dabei wird der Durchflussquerschnitt des Feldbereiches derart ausgebildet, dass er kleiner als der Durchflussquerschnitt des Reaktionsbereiches ist und eine Durchmischung und intensive Wechselwirkung mit dem Feld gegeben ist.In this case, the flow cross-section of the field region is formed such that it is smaller than the flow cross section of the reaction region and is given a thorough mixing and intensive interaction with the field.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Filtermodulfilter module
22
Feldbereichfield area
33
DurchflussrichtungFlow direction
44
Reaktionsbereichreaction region
55
Durchflussquerschnitt des FeldbereichesFlow cross-section of the field area
66
Durchflussquerschnitt des FeldbereichesFlow cross-section of the field area
77
Einströmbereichinflow
88th
Gehäusecasing
99
Öffnungopening
S1-S3S1-S3
Verfahrensschrittstep

Claims (15)

Filtermodul (1) für einen Haushaltsküchendunstabzug zum Reinigen von einem das Filtermodul (1) durchströmenden Fluid mit einem Feldbereich (2) mit einem elektrischen Wechselfeld zum Erzeugen von Fluidteilprodukten und einem von dem Feldbereich (2) getrennten, in Durchströmrichtung (3) nachgeordneten Reaktionsbereich (4), in welchem die erzeugten Fluidteilprodukte miteinander oder mit einem Fluidfiltermedium reagieren, dadurch gekennzeichnet, dass ein Durchflussquerschnitt (5) des Feldbereiches (2) kleiner als ein Durchflussquerschnitt (6) des Reaktionsbereiches (4) ist.Filter module (1) for a domestic kitchen extractor hood for cleaning a fluid flowing through the filter module (1) with an alternating field for generating fluid subproducts and a reaction area downstream from the field area (2) ( 4), in which the fluid partial products produced react with one another or with a fluid filter medium, characterized in that a flow cross section (5) of the field region (2) is smaller than a flow cross section (6) of the reaction region (4). Filtermodul nach Anspruch 1, dadurch gekennzeichnet, dass der Feldbereich (2) eine Führungsvorrichtung zur Strömungsführung des Fluides ausbildet.Filter module according to claim 1, characterized in that the field region (2) forms a guide device for flow guidance of the fluid. Filtermodul nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass ein dem Feldbereich (2) vorgeordneter Einströmbereich (7) zum Leiten des strömenden Fluides in den Feldbereich (2) vorgesehen ist, wobei der Einströmbereich (7) zumindest einen Sensor zum Erkennen des strömenden Fluides aufweist.Filter module according to claim 1 or 2, characterized in that the field region (2) upstream Einströmbereich (7) for guiding the flowing fluid in the field region (2) is provided, wherein the inflow region (7) at least one sensor for detecting the flowing fluid having. Feldmodul nach Anspruch 3, dadurch gekennzeichnet, dass der Einströmbereich (7) eine Klappe und zumindest ein von der Klappe angesteuertes Sensorpaar zum Erkennen des strömenden Fluides in den Feldbereich (2) aufweist.Field module according to claim 3, characterized in that the inflow region (7) has a flap and at least one sensor pair controlled by the flap for detecting the flowing fluid into the field region (2). Filtermodul nach Anspruch 4, dadurch gekennzeichnet, dass das Filtermodul (1) dazu eingerichtet ist, ein Wechselfeld in Abhängigkeit einer Strömungsgeschwindigkeit des Fluids zu erzeugen, wobei das Fluid in dem Feldbereich (2) dem Wechselfeld ausgesetzt wird.Filter module according to claim 4, characterized in that the filter module (1) is adapted to generate an alternating field as a function of a flow velocity of the fluid, wherein the fluid in the field region (2) is exposed to the alternating field. Filtermodul nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass ein Volumen des Feldbereiches (2) kleiner als ein Volumen des Reaktionsbereiches (4) ist.Filter module according to one of claims 1 to 5, characterized in that a volume of the field region (2) is smaller than a volume of the reaction region (4). Filtermodul nach Anspruch 6, dadurch gekennzeichnet, dass der Reaktionsbereich (4) den Feldbereich (2) umgibt.Filter module according to claim 6, characterized in that the reaction region (4) surrounds the field region (2). Filtermodul nach Anspruch 7, dadurch gekennzeichnet, dass der Feldbereich (2) und der Reaktionsbereich (4) in einem Gehäuse (8) angeordnet sind, wobei die Außenwände des Gehäuses (8) den Reaktionsbereich (4) begrenzen.Filter module according to claim 7, characterized in that the field region (2) and the reaction region (4) are arranged in a housing (8), wherein the outer walls of the housing (8) delimiting the reaction region (4). Filtermodul nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass der Feldbereich (2) Elektroden zum Erzeugen des elektrischen Wechselfeldes aufweistFilter module according to one of claims 1 to 8, characterized in that the field region (2) has electrodes for generating the alternating electric field Filtermodul nach Anspruch 9, dadurch gekennzeichnet, dass eine Steuerungsvorrichtung vorgesehen ist, die dazu eingerichtet ist, die Elektroden derart anzusteuern, dass das erzeugte elektrische Wechselfeld eine Feldstärke und/oder eine Frequenz aufweist, welche zum Erzeugen von Plasma und ionisierten Reaktionsprodukten aus dem Fluid geeignet ist.Filter module according to claim 9, characterized in that a control device is provided, which is adapted to drive the electrodes such that the generated alternating electric field has a field strength and / or a frequency which is suitable for generating plasma and ionized reaction products from the fluid is. Filtermodul nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass das Filtermedium ausschließlich in dem Reaktionsbereich (4) vorgesehen ist.Filter module according to one of claims 1 to 10, characterized in that the filter medium is provided exclusively in the reaction region (4). Filtermodul nach Anspruch 11, dadurch gekennzeichnet, dass der Reaktionsbereich (4) zumindest eine Filteraufnahme zum Aufnehmen zumindest eines Filtermediums aufweist.Filter module according to claim 11, characterized in that the reaction region (4) has at least one filter receptacle for receiving at least one filter medium. Filtermodul nach Anspruch 12, dadurch gekennzeichnet, dass zumindest ein Sicherheitselement vorgesehen ist, welches das Einsetzen einer vorbestimmten Art des Filtermediums in die Filteraufnahme sicherstellt und/oder ein Wiedereinsetzen eines benutzten Filtermediums in die Filteraufnahme verhindert.Filter module according to claim 12, characterized in that at least one security element is provided, which ensures the insertion of a predetermined type of the filter medium in the filter holder and / or prevents re-insertion of a used filter medium in the filter holder. Haushaltsküchendunstabzug mit einem Filtermodul nach einem der Ansprüche 1 bis 13.Domestic kitchen extractor with a filter module according to one of claims 1 to 13. Verfahren zum Betreiben eines Filtermoduls eines Haushaltsküchendunstabzugs zum Reinigen von einem das Filtermodul durchströmenden Fluid, wobei das Fluid in einem Feldbereich einem elektrischen Wechselfeld zum Erzeugen von Fluidteilprodukten ausgesetzt wird und die erzeugten Fluidteilprodukte in einem von dem Feldbereich getrennten, in Durchströmrichtung nachgeordneten Reaktionsbereich miteinander oder mit einem Filtermedium reagieren, dadurch gekennzeichnet, dass ein Durchflussquerschnitt des Feldbereiches kleiner als ein Durchflussquerschnitt des Reaktionsbereiches ausgebildet wird.A method for operating a filter module of a domestic kitchen extractor for cleaning a fluid flowing through the filter module, wherein the fluid is exposed in a field region an alternating electric field for generating fluid sub-products and the generated fluid sub-products in a separate from the field area, in the flow direction downstream reaction area with each other or react with a filter medium, characterized in that a flow cross-section of the field region is formed smaller than a flow cross-section of the reaction region.
EP11184776.0A 2010-10-22 2011-10-12 Filter module and method for operating the same Active EP2444159B1 (en)

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EP3220725B1 (en) 2016-03-15 2019-05-22 Manfred H. Langner Air purification module with a plasma-generating device and method for the preparation of a plasma-generating device

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EP2444159A3 (en) 2017-05-10
ES2766270T3 (en) 2020-06-12
EP2444159B1 (en) 2019-12-11
DE102010042795A1 (en) 2012-04-26

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