EP1228335A1 - Extractor device for kitchen fumes - Google Patents

Extractor device for kitchen fumes

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Publication number
EP1228335A1
EP1228335A1 EP00972739A EP00972739A EP1228335A1 EP 1228335 A1 EP1228335 A1 EP 1228335A1 EP 00972739 A EP00972739 A EP 00972739A EP 00972739 A EP00972739 A EP 00972739A EP 1228335 A1 EP1228335 A1 EP 1228335A1
Authority
EP
European Patent Office
Prior art keywords
filter
extractor
extractor hood
stream
hood device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP00972739A
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German (de)
French (fr)
Other versions
EP1228335B1 (en
Inventor
Martin Kornberger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
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Filing date
Publication date
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP1228335A1 publication Critical patent/EP1228335A1/en
Application granted granted Critical
Publication of EP1228335B1 publication Critical patent/EP1228335B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/20—Removing cooking fumes

Definitions

  • the invention relates to an extractor device for kitchen extractor, comprising a filter device with at least one filter in the extractor path according to the preamble of claim 1.
  • an extractor hood with an odor filter insert which consists of a sheet metal frame which is closed on both sides by a fine wire mesh and is filled with an odor filter material.
  • This odor filter insert is arranged downstream of a grease filter in the extractor path.
  • the odor filter material is of such a type that it can be heated by a heating device to such an extent that it releases its odorous substances and is then again able to absorb odorous substances.
  • an odor filter is known which contains activated carbon as a filter material. Activated carbon cannot be regenerated and must therefore be replaced from time to time.
  • Extractor hoods are available in the form of recirculation hoods and exhaust hoods as well as in the form of hoods, which can be switched to either recirculated air or exhaust air. They are placed over hobs, stoves, and other food cooking devices to peel away from those created during cooking
  • the exhaust hoods release the extracted haze into the outside atmosphere through an exhaust duct (exhaust chimney) from the building in question.
  • Recirculation hoods direct the air contained in the haze, cleaned by a filter device, back into the room (kitchen) from which they sucked in the air.
  • the invention described here is particularly advantageous for ventilation hoods, but can also be used for ventilation hoods to avoid environmental pollution outside a building.
  • the recirculation hoods known today by no means achieve the effect of exhaust hoods with regard to removing steam, grease and odors from the room or the kitchen, in which the hood is arranged above a hotplate, a stove or another device for cooking food , At the same time, however, there is a great need for good steam, grease and odor removal, also in the case of recirculation hoods, especially in rental apartments where wall breakthroughs are not permitted, or in low-energy houses where the warm kitchen air should not be blown into the outside atmosphere to avoid energy losses.
  • Recirculation hoods today mainly work with activated carbon filters to remove odors.
  • the known disadvantages are:
  • the odor filter must be replaced every three to six months because the active surface is saturated with gases, also called "odors", and grease. It is expensive and pollutes the environment. The odor-eliminating effect is poor and decreases quickly, so that there is only a short service life (effective usage times).
  • the object of the invention is to provide a possibility by which the use of disposable filters is avoided, odor removal is improved, overall extractor hood efficiency is improved and noise is reduced.
  • the extractor hood device can have the shape of a hood or some other shape. It is therefore also generally referred to below as an extractor device.
  • the invention is described below with reference to the drawing using preferred embodiments as examples. In the drawing shows
  • Fig. 1 shows schematically an extractor hood device according to the invention.
  • the fume extraction device 2 shown in FIG. 1 contains in its fume extraction path or air extraction path in the flow direction a grease filter 4, a regenerable odor filter 6, which are each easily removable and easy to use, a cooking steam 8 and a fan 12 sucking in ambient air 10, an air outlet 14 for cleaned air 16 back into the room in which the extractor device 2 is located, and / or an alternative air outlet 18 for dispensing cleaned air 20 (or of unpurified air 20 when using the extractor device 2 without the filters 4 and 6) out of the room where the extractor hood device 2 is located, into the outside atmosphere of the building in question.
  • the odor filter 6 has catalyst material or consists of catalyst material which has a catalyzing effect on the fume extraction stream consisting of cooking vapor 8 and / or ambient air 10, in particular on the odors or smelling gases contained therein, which is caused by irradiation of the fume extraction stream 8, 10 immediately before or on the regenerable odor filter 6 with ultraviolet light 22 (UV light) of a UV light source 24.
  • the UV light source 24 can be arranged and fastened on or in a housing 26 of the extractor device 2, or externally thereof, for example on a building wall.
  • an ionizing device 24 for ionizing the fume extraction stream 8, 10 on the way to the odor filter 6 or directly on this odor filter 6 is provided instead of the UV light source 24.
  • the odor filter 6 is a regenerative filter, the principle of which is based on adsorption and catalytic oxidation.
  • the odor filter 6 preferably has a lattice structure, for example a honeycomb structure. This is preferably formed by a support structure made of metal or ceramic, on which a layer of catalyst material or of a Catalyst material doped other material, preferably zeolite ceramic or titanium dioxide is applied.
  • Such a lattice-shaped odor filter 6 has only a low flow resistance for the cooking fumes 8 and the ambient air 10, and a good adsorption effect for collecting adsorbable constituents from this cooking fume air flow.
  • the catalytic effect is only slight or limited to light molecular structures (CH X , CH 4 OH) at room temperature if no additional measures are provided. Heating the cooking vapor ambient air air flow to, for example, 300 ° C. in order to develop a catalytic effect is, however, uneconomical because of the energy required for this and unfavorable because of the high temperature.
  • the invention therefore proposes the two methods “UV radiation” and “ionization”, which are used alternatively or simultaneously to excite the
  • Catalyst process can be used.
  • the UV light can be generated by a commercially available UV tube. This can be arranged behind a glass which is well permeable to UV light and thus outside of the steam area or vapor area of the cooking vapor 8.
  • the proportion of the catalyzed gases in the fume extraction stream to be cleaned can also include heavier molecular structures, such as occur in cooking processes, for example.
  • the catalytic material e.g. Titanium dioxide, is preferably doped in another material, e.g. in the manner mentioned in zeolite ceramic, which is based on a metallic or ceramic honeycomb structure or others
  • the proportion of the odor filter 6 required for the active surface for adsorption is lower than in conventional activated carbon filters, or longer service lives are achieved with active adsorption surfaces of the odor filter 6 of the same size (longer times during which the odor filter can be used effectively).
  • the odor filter 6 is saturated in terms of its adsorption capacity, which is estimated to be the case every 30 to 40 operating hours (similar to grease filters), then regeneration occurs possible.
  • the fat can be removed from the odor filter 6 in a dishwasher in a first step, because the grid material used according to the invention, including the catalyst material, is dishwasher-safe.
  • the odor filter 6 can be desorbed in the oven 30 of a baking oven 32 at approximately 150 ° C., ie the material adsorbed from the air stream to be cleaned can be detached again from the odor filter.
  • adsorbed odors or odor particles can, as described above with reference to the irradiation with UV light, be desorbed in an oven at, for example, 150 ° C. Excess ozone is converted into diatomic oxygen by the catalytic component at room temperature.
  • Disposable filters are no longer required, which is a cost advantage for customers and means a reduction in environmental pollution.
  • the odor filter 6 can be regenerated in a simple manner, for example by washing the odor filter in a dishwasher and desorption in an oven. Better, more effective odor removal from the airflow to be cleaned. Because of the lower flow resistance of the odor filter 6, relative to an activated carbon filter, the electrical power required for the blower 12, the blower noise and the flow noise of the fume extraction stream 8, 10 to be cleaned are reduced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
  • Catalysts (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Processing Of Meat And Fish (AREA)
  • Ventilation (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

A fume exhaust system includes a fume filter, particularly, an odor filter that induces a catalysis process with the aid of catalyst material of the filter given irradiation of the fume exhaust stream with UV light and/or given ionization of the fume exhaust stream.

Description

Dunstabzuqseinrichtunq für Küchendunst Extractor device for kitchen extractor
Die Erfindung betrifft eine Dunstabzugseinrichtung für Küchendunst, enthaltend eine Filtereinrichtung mit mindestens einem Filter im Dunstabzugsweg gemäß dem Oberbegriff von Anspruch 1.The invention relates to an extractor device for kitchen extractor, comprising a filter device with at least one filter in the extractor path according to the preamble of claim 1.
Aus der DE-B-23 63 820 ist eine Dunstabzugshaube mit einem Geruchsfiltereinsatz bekannt, welcher aus einem Blechrahmen besteht, der auf beiden Seiten durch ein Feindrahtgeflecht abgeschlossen und mit einem Geruchsfiltermaterial gefüllt ist. Dieser Geruchsfiltereinsatz ist im Dunstabzugsweg stromabwärts nach einem Fettfilter angeordnet. Das Geruchsfiltermaterial ist von solcher Art, daß es durch eine Heizvorrichtung soweit aufgeheizt werden kann, daß es seine Geruchsstoffe abgibt und dann erneut wieder aufnahmefähig ist für Geruchsstoffe. Aus der DE-C- 31 46 537 ist ein Geruchsfilter bekannt, welcher Aktivkohle als Filtermaterial enthält. Aktivkohle ist nicht regenerierbar und muß deshalb von Zeit zu Zeit ausgewechselt werden.From DE-B-23 63 820 an extractor hood with an odor filter insert is known, which consists of a sheet metal frame which is closed on both sides by a fine wire mesh and is filled with an odor filter material. This odor filter insert is arranged downstream of a grease filter in the extractor path. The odor filter material is of such a type that it can be heated by a heating device to such an extent that it releases its odorous substances and is then again able to absorb odorous substances. From DE-C-31 46 537 an odor filter is known which contains activated carbon as a filter material. Activated carbon cannot be regenerated and must therefore be replaced from time to time.
Dunstabzugseinrichtungen gibt es in Form von Umlufthauben und von Ablufthauben sowie in Form von Hauben, welche wahlweise auf Umluft oder auf Abluft umschaltbar sind. Sie werden über Kochstellen, Herden und anderen Geräten zum Garen von Speisen angeordnet zum Abziehen von den beim Garen entstehendenExtractor hoods are available in the form of recirculation hoods and exhaust hoods as well as in the form of hoods, which can be switched to either recirculated air or exhaust air. They are placed over hobs, stoves, and other food cooking devices to peel away from those created during cooking
Dämpfen, Fetten und Gerüchen. Die Ablufthauben geben den angesaugten Dunst durch einen Abzugskanal (Abzugskamin) aus dem betreffenden Gebäude hinaus in die Außenatmosphäre. Umlufthauben leiten den im Dunst enthaltenen, durch eine Filtereinrichtung gereinigten Luftanteil wieder in den Raum (Küche) zurück, aus welchem sie die Luft angesaugt haben.Steaming, greasing and smells. The exhaust hoods release the extracted haze into the outside atmosphere through an exhaust duct (exhaust chimney) from the building in question. Recirculation hoods direct the air contained in the haze, cleaned by a filter device, back into the room (kitchen) from which they sucked in the air.
Die hier beschriebene Erfindung ist besonders für Umlufthauben vorteilhaft, kann jedoch auch für Ablufthauben verwendet werden zur Vermeidung von Umweltbelästigungen außerhalb eines Gebäudes. Die heute bekannten Umlufthauben erreichen bei weitem nicht die Wirkung von Ablufthauben mit Bezug auf Dampf-, Fett- und Geruchsbeseitigung aus dem Raum bzw. der Küche, in welcher die Haube über einer Kochstelle, einem Herd oder einem anderen Gerät zum Garen von Speisen angeordnet ist. Gleichzeitig besteht jedoch ein großer Bedarf nach einer guten Dampf-, Fett- und Geruchsbeseitigung auch bei Umlufthauben, insbesondere in Mietwohnungen, wo Mauerdurchbrüche nicht erlaubt sind, oder in Niedrigenergiehäusern, wo zur Vermeidung von Energieverlusten die warme Küchenluft nicht in die Außenatmosphäre geblasen werden sollte.The invention described here is particularly advantageous for ventilation hoods, but can also be used for ventilation hoods to avoid environmental pollution outside a building. The recirculation hoods known today by no means achieve the effect of exhaust hoods with regard to removing steam, grease and odors from the room or the kitchen, in which the hood is arranged above a hotplate, a stove or another device for cooking food , At the same time, however, there is a great need for good steam, grease and odor removal, also in the case of recirculation hoods, especially in rental apartments where wall breakthroughs are not permitted, or in low-energy houses where the warm kitchen air should not be blown into the outside atmosphere to avoid energy losses.
Umlufthauben arbeiten heute überwiegend mit Aktivkohlefilter zur Geruchsbeseitigung. Die bekannten Nachteile sind:Recirculation hoods today mainly work with activated carbon filters to remove odors. The known disadvantages are:
1. Alle drei bis sechs Monate muß der Geruchsfilter ausgewechselt werden, weil die aktive Oberfläche gesättigt ist mit Gasen, auch "Gerüchen" genannt, und Fett. Das ist teuer und belastet die Umwelt. Die geruchsbeseitigende Wirkung ist nur mangelhaft und nimmt schnell ab, so daß man nur kurze Standzeiten (wirksame Benutzungszeiten) hat.1. The odor filter must be replaced every three to six months because the active surface is saturated with gases, also called "odors", and grease. It is expensive and pollutes the environment. The odor-eliminating effect is poor and decreases quickly, so that there is only a short service life (effective usage times).
2. Aufgrund des hohen Luftwiderstandes von Aktivkohlefiltern, welches meistens2. Due to the high air resistance of activated carbon filters, which mostly
Schüttgut-Kohlefilter mit zwei engporigen Vlies-Lagen sind, ist die Absaugwirkung von Umluftfiltern im Vergleich zu Abluftfiltern deutlich niedriger und sie nimmt mit zunehmender Filterverschmutzung deutlich ab. Mit zunehmendem Luftwiderstand steigt auch das von der Dunstabzugshaube erzeugte Geräusch stark an, insbeson- dere das Strömungsrauschen des Dunstabzugstromes und das Motorgeräusch desBulk carbon filters with two narrow-pored fleece layers, the suction effect of recirculating air filters is significantly lower compared to exhaust air filters and it decreases significantly with increasing filter contamination. With increasing air resistance, the noise generated by the extractor hood also rises sharply, in particular the flow noise of the extractor fan current and the engine noise of the
Gebläses in der Dunstabzugshaube.Blower in the extractor hood.
Durch die Erfindung soll die Aufgabe gelöst werden, eine Möglichkeit zu schaffen, durch welche die Verwendung von Wegwerf-Filtern vermieden wird, die Geruchs- beseitigung verbessert wird, der Dunstabzugs-Gesamtwirkungsgrad verbessert und die Geräuschentwicklung reduziert wird.The object of the invention is to provide a possibility by which the use of disposable filters is avoided, odor removal is improved, overall extractor hood efficiency is improved and noise is reduced.
Die Dunstabzugseinrichtung kann wie beim Stand der Technik die Form einer Haube oder eine andere Form haben. Sie wird deshalb nachfolgend auch allgemein als Dunstabzugseinrichtung bezeichnet. Die Erfindung wird im folgenden mit Bezug auf die Zeichnung anhand von bevorzugten Ausführungsformen als Beispiele beschrieben. In der Zeichnung zeigtAs in the prior art, the extractor hood device can have the shape of a hood or some other shape. It is therefore also generally referred to below as an extractor device. The invention is described below with reference to the drawing using preferred embodiments as examples. In the drawing shows
Fig. 1 schematisch eine Dunstabzugseinrichtung nach der Erfindung.Fig. 1 shows schematically an extractor hood device according to the invention.
Die in Fig. 1 dargestellte Dunstabzugseinrichtung 2 enthält in ihrem Dunstabzugsweg bzw. Luftabzugsweg in Strömungsrichtung nacheinander einen Fettfilter 4, einen regenerierbaren Geruchsfilter 6, die je leicht herausnehmbar und leicht ein- setzbar sind, ein Kochdünste 8 und Umgebungsluft 10 ansaugendes Gebläse 12, einen Luftauslaß 14 für gereinigte Luft 16 zurück in den Raum, in welchem sich die Dunstabzugseinrichtung 2 befindet, und/oder einen alternativ verwendbaren Luftauslaß 18 zur Abgabe von gereinigter Luft 20 (oder von ungereinigter Luft 20 bei Verwendung der Dunstabzugseinrichtung 2 ohne die Filter 4 und 6) aus dem Raum heraus, wo sich die Dunstabzugseinrichtung 2 befindet, in die Außenatmosphäre des betreffenden Gebäudes.The fume extraction device 2 shown in FIG. 1 contains in its fume extraction path or air extraction path in the flow direction a grease filter 4, a regenerable odor filter 6, which are each easily removable and easy to use, a cooking steam 8 and a fan 12 sucking in ambient air 10, an air outlet 14 for cleaned air 16 back into the room in which the extractor device 2 is located, and / or an alternative air outlet 18 for dispensing cleaned air 20 (or of unpurified air 20 when using the extractor device 2 without the filters 4 and 6) out of the room where the extractor hood device 2 is located, into the outside atmosphere of the building in question.
Der Geruchsfilter 6 weist Katalysatormaterial auf oder besteht aus Katalysatormaterial, welches auf den Dunstabzugstrom, bestehend aus Kochdunst 8 und/oder Umgebungsluft 10, insbesondere auf die in ihm enthaltenen Gerüche bzw. riechenden Gase eine katalysierende Wirkung hat, die durch Bestrahlen des Dunstabzugstromes 8, 10 unmittelbar vor oder am regenerierbaren Geruchsfilter 6 mit Ultraviolett-Licht 22 (UV-Licht) einer UV-Lichtquelle 24 angeregt wird. Die UV-Lichtquelle 24 kann an oder in einem Gehäuse 26 der Dunstabzugseinrichtung 2 angeordnet und befestigt sein, oder extern davon, beispielsweise an einer Gebäudewand.The odor filter 6 has catalyst material or consists of catalyst material which has a catalyzing effect on the fume extraction stream consisting of cooking vapor 8 and / or ambient air 10, in particular on the odors or smelling gases contained therein, which is caused by irradiation of the fume extraction stream 8, 10 immediately before or on the regenerable odor filter 6 with ultraviolet light 22 (UV light) of a UV light source 24. The UV light source 24 can be arranged and fastened on or in a housing 26 of the extractor device 2, or externally thereof, for example on a building wall.
Gemäß einer anderen Ausführungsform wird anstelle der UV-Lichtquelle 24 eine lonisiereinrichtung 24 zur Ionisierung des Dunstabzugstromes 8, 10 auf dem Weg zum Geruchsfilter 6 oder unmittelbar an diesem Geruchsfilter 6 vorgesehen.According to another embodiment, an ionizing device 24 for ionizing the fume extraction stream 8, 10 on the way to the odor filter 6 or directly on this odor filter 6 is provided instead of the UV light source 24.
Der Geruchsfilter 6 ist ein regenerativer Filter, dessen Prinzip auf Adsorption und katalytischer Oxydation beruht.The odor filter 6 is a regenerative filter, the principle of which is based on adsorption and catalytic oxidation.
Der Geruchsfilter 6 hat vorzugsweise eine Gitterstruktur, beispielsweise eine Wa- benstruktur. Diese ist vorzugsweise durch eine Trägerstruktur aus Metall oder Keramik gebildet, auf welche eine Schicht aus Katalysatormaterial oder aus einem mit Katalysatormaterial dotiertem anderen Material, vorzugsweise Zeolith-Keramik oder Titandioxid aufgebracht ist.The odor filter 6 preferably has a lattice structure, for example a honeycomb structure. This is preferably formed by a support structure made of metal or ceramic, on which a layer of catalyst material or of a Catalyst material doped other material, preferably zeolite ceramic or titanium dioxide is applied.
Ein solcher gitterförmiger Geruchsfilter 6 hat einen nur geringen Strömungswider- stand für die Kochdünste 8 und die Umgebungsluft 10, und eine gute Adsorptionswirkung zum Auffangen von adsorbierbaren Bestandteilen aus diesem Kochdunst- Luftstrom. Der katalytische Effekt ist jedoch nur gering oder beschränkt sich auf leichte Molekularstrukturen (CHX, CH4OH) bei Zimmertemperatur, falls keine zusätzlichen Maßnahmen vorgesehen werden. Ein Aufheizen des Kochdunst-Umge- bungsluft-Luftstromes auf beispielsweise 300° C, um eine katalytische Wirkung zu entfalten, ist jedoch wegen der dafür erforderlichen Energie unwirtschaftlich und wegen der hohen Temperatur ungünstig.Such a lattice-shaped odor filter 6 has only a low flow resistance for the cooking fumes 8 and the ambient air 10, and a good adsorption effect for collecting adsorbable constituents from this cooking fume air flow. However, the catalytic effect is only slight or limited to light molecular structures (CH X , CH 4 OH) at room temperature if no additional measures are provided. Heating the cooking vapor ambient air air flow to, for example, 300 ° C. in order to develop a catalytic effect is, however, uneconomical because of the energy required for this and unfavorable because of the high temperature.
Durch die Erfindung werden deshalb die zwei Verfahren "UV-Bestrahlung" und "Ionisierung" vorgeschlagen, welche alternativ oder gleichzeitig zum Anregen desThe invention therefore proposes the two methods “UV radiation” and “ionization”, which are used alternatively or simultaneously to excite the
Katalysatorprozesses verwendbar sind.Catalyst process can be used.
Zur Anregung des Katalysatorprozesses durch Bestrahlung des zu reinigenden Luftstromes mit UV-Licht stromaufwärts oder im Bereich des regenerierbaren Ge- ruchsfilters 6:To stimulate the catalyst process by irradiating the air stream to be cleaned with UV light upstream or in the area of the regenerable odor filter 6:
1. Das UV-Licht kann von einer handelsüblichen UV-Röhre erzeugt werden. Diese kann hinter einem für UV-Licht gut durchlässigen Glas und damit außerhalb von dem Dampfbereich oder Dunstbereich des Kochdunstes 8 angeordnet werden. Bei geeigneter Wahl der Wellenlänge des UV-Lichtes in Abhängigkeit von dem katalyti- schen Material kann der Anteil der katalysierten Gase des zu reinigenden Dunstabzugstromes auch schwerere Molekularstrukturen umfassen, wie sie beispielsweise bei Kochprozessen auftreten. Das katalytische Material, z.B. Titandioxid, ist vorzugsweise in ein anderes Material dotiert, z.B. in der genannten Weise in Zeolith- Keramik, welches auf eine metallische oder keramische Wabenstruktur oder andere1. The UV light can be generated by a commercially available UV tube. This can be arranged behind a glass which is well permeable to UV light and thus outside of the steam area or vapor area of the cooking vapor 8. With a suitable choice of the wavelength of the UV light as a function of the catalytic material, the proportion of the catalyzed gases in the fume extraction stream to be cleaned can also include heavier molecular structures, such as occur in cooking processes, for example. The catalytic material, e.g. Titanium dioxide, is preferably doped in another material, e.g. in the manner mentioned in zeolite ceramic, which is based on a metallic or ceramic honeycomb structure or others
Gitterstruktur aufgebracht ist. Dadurch wird der für die aktive Oberfläche zur Adsorption erforderliche Anteil des Geruchsfilters 6 geringer als bei herkömmlichen Aktivkohlefiltern oder man erreicht bei gleich großen aktiven Adsorptions-Oberflächen des Geruchsfilters 6 längere Standzeiten (längere Zeiten, während welchen der Geruchsfilter wirksam benutzt werden kann). Wenn der Geruchsfilter 6 bezüglich seiner Adsorptionskapazität gesättigt ist, was schätzungsweise alle 30 bis 40 Betriebsstunden (ähnlich wie bei Fettfiltern) der Fall sein wird, ist eine Regeneration möglich. Für eine solche Regeneration kann in einem ersten Schritt das Fett vom Geruchsfilter 6 in einer Spülmaschine entfernt werden, weil das gemäß der Erfindung verwendete Gittermaterial einschließlich des Katalysatormaterials spülmaschinenfest ist. In einem zweiten Schritt kann der Geruchsfilter 6 im Backofen 30 eines Backherdes 32 bei ungefähr 150° C desorbiert werden, d.h. das aus dem zu reinigenden Luftstrom adsorbierte Material wieder vom Geruchsfilter gelöst werden.Lattice structure is applied. As a result, the proportion of the odor filter 6 required for the active surface for adsorption is lower than in conventional activated carbon filters, or longer service lives are achieved with active adsorption surfaces of the odor filter 6 of the same size (longer times during which the odor filter can be used effectively). If the odor filter 6 is saturated in terms of its adsorption capacity, which is estimated to be the case every 30 to 40 operating hours (similar to grease filters), then regeneration occurs possible. For such a regeneration, the fat can be removed from the odor filter 6 in a dishwasher in a first step, because the grid material used according to the invention, including the catalyst material, is dishwasher-safe. In a second step, the odor filter 6 can be desorbed in the oven 30 of a baking oven 32 at approximately 150 ° C., ie the material adsorbed from the air stream to be cleaned can be detached again from the odor filter.
2. Anregen der katalytischen Wirkung durch die genannte Ionisation:2. Stimulation of the catalytic effect by the named ionization:
Durch Ionisation des zu reinigenden Luftstromes stromaufwärts oder im Bereich des regenerierbaren Geruchsfilters 6, welcher das Katalysatormaterial aufweist, ist es ebenfalls möglich, die Oxydationsprozesse zu beschleunigen. Einerseits wird das Energieniveau auch von größeren Molekülen oder Partikeln des zu reinigenden Dunstabzugstromes 8, 10 angehoben, wodurch sie reaktionsfreudiger werden, andererseits bildet sich durch Dissoziation nativer Sauerstoff und, je nach lonisa- tionsspannung, Ozon. In Gegenwart des katalytischen Materials des Geruchsfilters 6 wird somit eine Oxydation begünstigt. Durch diese Oxydationsbegünstigung können O3 und höherwertige Sauerstoff-Cluster schon allein oxydieren. Die ebenfalls vorhandene Adsorptionswirkung des Geruchsfilters 6 führt dazu, daß unkatalysier- bare Gerüche bzw. Gase adsorbiert werden. Diese adsorbierten Gerüche bzw. Geruchspartikel können, wie dies vorstehend mit Bezug auf die Bestrahlung mit UV- Licht beschrieben wurde, in einem Backofen bei beispielsweise 150° C desorbiert werden. Überschüssiges Ozon wird durch den katalytischen Anteil bei Raumtemperatur in zweiatomigen Sauerstoff überführt.By ionizing the air stream to be cleaned upstream or in the area of the regenerable odor filter 6, which has the catalyst material, it is also possible to accelerate the oxidation processes. On the one hand, the energy level is increased by larger molecules or particles of the fume extraction stream 8, 10 to be cleaned, which makes them more reactive, on the other hand, through dissociation, native oxygen and, depending on the ionization voltage, ozone are formed. In the presence of the catalytic material of the odor filter 6, oxidation is thus promoted. Due to this oxidation favor, O 3 and higher-quality oxygen clusters can oxidize alone. The adsorption effect of the odor filter 6, which is also present, leads to the fact that uncatalyzed odors or gases are adsorbed. These adsorbed odors or odor particles can, as described above with reference to the irradiation with UV light, be desorbed in an oven at, for example, 150 ° C. Excess ozone is converted into diatomic oxygen by the catalytic component at room temperature.
Die Vorteile der Erfindung sind insbesondere:The advantages of the invention are in particular:
Es werden keine Wegwerf-Filter mehr benötigt, was ein Kostenvorteil für die Kunden ist und eine Reduzierung der Umweltbelastung bedeutet. Das Regenerieren des Geruchs- filters 6 kann auf einfache Weise durchgeführt werden, beispielsweise durch Waschen des Geruchsfilters in einer Geschirrspülmaschine und Desorption in einem Backofen. Eine bessere, effektivere Geruchsbeseitigung aus dem zu reinigenden Luftstrom. Wegen des geringeren Strömungswiderstandes des Geruchsfilters 6, relativ zu einem Aktivkohlefilter, werden die für das Gebläse 12 erforderliche elektrische Leistung, die Gebläsege- rausche und die Strömungsgeräusche des zu reinigenden Dunstabzugstromes 8, 10 reduziert. Disposable filters are no longer required, which is a cost advantage for customers and means a reduction in environmental pollution. The odor filter 6 can be regenerated in a simple manner, for example by washing the odor filter in a dishwasher and desorption in an oven. Better, more effective odor removal from the airflow to be cleaned. Because of the lower flow resistance of the odor filter 6, relative to an activated carbon filter, the electrical power required for the blower 12, the blower noise and the flow noise of the fume extraction stream 8, 10 to be cleaned are reduced.

Claims

Patentansprüche claims
1. Dunstabzugseinrichtung für Küchendünste, enthaltend eine Filterein- richtung mit mindestens einem Filter (6) im Dunstabzugsweg, dadurch gekennzeichnet, daß eine UV-Lichtquelle (24) zur UV-Lichtbestrahlung und/oder eine lonisationsquelle zur Ionisierung des von einem Gebläse (12) angesaugten Dunststromes vor dem Filter (6) oder im Bereich dieses Filters vorgesehen ist, um ein katalytisches Zersetzen von minde- stens einem Teil des Dunstabzugstromes (8, 10) durch Katalysatormaterial anzuregen, welches der Filter (6) aufweist oder aus welchem der Filter besteht.1. Extractor hood device for kitchen vapors, containing a filter device with at least one filter (6) in the extractor hood path, characterized in that a UV light source (24) for UV light irradiation and / or an ionization source for ionizing the fan (12) the suctioned-in vapor stream is provided in front of the filter (6) or in the area of this filter in order to stimulate catalytic decomposition of at least a part of the vapor exhaust stream (8, 10) by catalyst material which the filter (6) has or of which the filter consists ,
2. Dunstabzugseinrichtung nach Anspruch 1 , dadurch gekennzeichnet, daß der Filter (6) ein Geruchsfilter und das Katalysatormaterial von der2. Extractor hood device according to claim 1, characterized in that the filter (6) is an odor filter and the catalyst material of the
Art ist, daß der katalytisch zersetzbare Teil des Dunstabzugstromes dessen Geruchsteil ist.Type is that the catalytically decomposable part of the fume hood is its odor part.
3. Dunstabzugseinrichtung nach Anspruch 1 oder 2, dadurch gekenn- zeichnet, daß der Filter (6) eine Gitterstruktur aufweist, welche Gitteröffnungen für den Durchlaß des Dunstabzugstromes hat.3. Extractor hood device according to claim 1 or 2, characterized in that the filter (6) has a grid structure which has grid openings for the passage of the extractor hood flow.
4. Dunstabzugseinrichtung nach Anspruch 3, dadurch gekennzeichnet, daß die Gitterstruktur eine Wabenstruktur ist.4. Extractor hood device according to claim 3, characterized in that the lattice structure is a honeycomb structure.
5. Dunstabzugseinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Filter (6) ein Trägergitter aufweist, auf welches das Katalysatormaterial aufgebracht ist.5. Extractor hood device according to one of the preceding claims, characterized in that the filter (6) has a support grid on which the catalyst material is applied.
6. Dunstabzugseinrichtung nach Anspruch 5, dadurch gekennzeichnet, daß das Trägergitter aus Metall oder Keramik besteht. 6. Extractor hood device according to claim 5, characterized in that the support grid consists of metal or ceramic.
7. Dunstabzugseinrichtung nach Anspruch 5 oder 6, dadurch gekennzeichnet, daß auf das Trägergitter ein mit dem Katalysatormaterial dotiertes Material aufgebracht ist.7. Extractor hood device according to claim 5 or 6, characterized in that a material doped with the catalyst material is applied to the support grid.
8. Dunstabzugseinrichtung nach Anspruch 7, dadurch gekennzeichnet, daß das dotierte Material Keramik ist. 8. Extractor hood device according to claim 7, characterized in that the doped material is ceramic.
9. Dunstabzugseinrichtung nach Anspruch 8, dadurch gekennzeichnet, daß das dotierte Keramik Zeolith-Keramik ist.9. Extractor hood device according to claim 8, characterized in that the doped ceramic is zeolite ceramic.
10. Dunstabzugseinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Katalysatormaterial Titandioxid ist.10. Extractor hood device according to one of the preceding claims, characterized in that the catalyst material is titanium dioxide.
11. Dunstabzugseinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Filter (6) ein Adsorptionsmaterial zum Adsorbieren von Teilen aus dem Dunstabzugstrom aufweist, dessen adsorbierte Teile durch Erwärmung auf eine Temperatur im Bereich von 120° C bis 180° C desorbierbar sind.11. Extractor hood device according to one of the preceding claims, characterized in that the filter (6) has an adsorbent material for adsorbing parts from the extractor hood flow, the adsorbed parts of which can be desorbed by heating to a temperature in the range from 120 ° C to 180 ° C.
12. Geruchsfilter für Dunstabzugseinrichtungen, gekennzeichnet durch Katalysatormaterial nach einem der vorhergehenden Ansprüche zum katalytischen Zersetzen von Teilen eines Dunstabzugstromes durch Bestrahlen dieses Dunstabzugstromes mit ultraviolettem Licht und/oder durch Ionisierung dieses Dunstabzugstromes.12. Odor filter for extractor devices, characterized by catalyst material according to one of the preceding claims for the catalytic decomposition of parts of an extractor stream by irradiating this extractor stream with ultraviolet light and / or by ionizing this extractor stream.
13. Verwendung eines Geruchsfilters in einer Dunstabzugseinrichtung, welcher Katalysatormaterial nach einem der Ansprüche 1 bis 12 zum katalytischen Zersetzen von Teilen des Dunstabzugstromes durch Bestrahlen des Dunstabzugstromes mit ultraviolettem Licht und/oder durch Ionisierung des Dunstabzugstromes aufweist. 13. Use of an odor filter in an extractor device, which has catalyst material according to one of claims 1 to 12 for the catalytic decomposition of parts of the extractor stream by irradiating the extractor stream with ultraviolet light and / or by ionizing the extractor stream.
EP00972739A 1999-10-14 2000-10-11 Extractor device for kitchen fumes Expired - Lifetime EP1228335B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19949599A DE19949599A1 (en) 1999-10-14 1999-10-14 Extractor hood for kitchen extractor
DE19949599 1999-10-14
PCT/EP2000/010032 WO2001027539A1 (en) 1999-10-14 2000-10-11 Extractor device for kitchen fumes

Publications (2)

Publication Number Publication Date
EP1228335A1 true EP1228335A1 (en) 2002-08-07
EP1228335B1 EP1228335B1 (en) 2006-08-02

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EP00972739A Expired - Lifetime EP1228335B1 (en) 1999-10-14 2000-10-11 Extractor device for kitchen fumes

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US (1) US20020157661A1 (en)
EP (1) EP1228335B1 (en)
AT (1) ATE335174T1 (en)
DE (2) DE19949599A1 (en)
ES (1) ES2267578T3 (en)
TR (1) TR200200742T2 (en)
WO (1) WO2001027539A1 (en)

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Also Published As

Publication number Publication date
TR200200742T2 (en) 2002-08-21
ATE335174T1 (en) 2006-08-15
US20020157661A1 (en) 2002-10-31
ES2267578T3 (en) 2007-03-16
DE19949599A1 (en) 2001-04-19
WO2001027539A1 (en) 2001-04-19
EP1228335B1 (en) 2006-08-02
DE50013273D1 (en) 2006-09-14

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