EP0603537A1 - Smoke extracting hood - Google Patents

Smoke extracting hood Download PDF

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Publication number
EP0603537A1
EP0603537A1 EP93118455A EP93118455A EP0603537A1 EP 0603537 A1 EP0603537 A1 EP 0603537A1 EP 93118455 A EP93118455 A EP 93118455A EP 93118455 A EP93118455 A EP 93118455A EP 0603537 A1 EP0603537 A1 EP 0603537A1
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EP
European Patent Office
Prior art keywords
filter
extractor hood
grease filter
grease
actual
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Granted
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EP93118455A
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German (de)
French (fr)
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EP0603537B1 (en
Inventor
Hans Gerd Dipl.-Ing. Keller
Peter Dipl.-Ing. Rohrbach (Fh)
Wilfried Dipl.-Ing. Rückert (FH)
Dieter Dipl.-Ing. Schmid (Fh)
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Individual
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Individual
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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
    • F24C15/2035Arrangement or mounting of filters
    • 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
    • F24C15/2078Removing cooking fumes movable
    • F24C15/2092Removing cooking fumes movable extendable or pivotable

Definitions

  • the present invention relates to an extractor hood with a grease filter and a suction system for applying this grease filter with a substantially uniform vacuum in order to convey gases to be cleaned, in particular air contaminated by cooking fumes, through this grease filter, and with a suction area in front of the grease filter, which is changeable by air guiding devices, such as in flaps, drawer-like pull-outs and the like.
  • extractor hoods are Realized which are smaller in construction and which are additionally equipped with air guiding devices, such as plates, drawer-like pull-outs and the like, in order to enlarge the collecting area of the extractor hood.
  • An extractor hood with a grease filter and a suction system for supplying this grease filter with negative pressure in order to suck in kitchen fumes to be cleaned in particular, which does the job, is characterized according to the invention in that the air guiding devices are equipped with filter elements facing the origin of the gases to be cleaned, which are opposite the real one Grease filter is characterized by a higher permeability and a significantly reduced absorption behavior, and that the area of these filter elements facing away from the inflowing gases flows into the suction areas of the actual grease filter.
  • An extractor hood equipped according to these features according to the invention is characterized in that the actual fat filter connected directly or indirectly upstream of the suction fan is finally used and responsible for the absorption of the fat particles and other contaminants of the air occurring during cooking and roasting.
  • This can be inserted into the housing in an essentially air flow-tight manner, so that there is no fear of incorrect air in the intake and exhaust air ducts.
  • the additional air-guiding devices take into account the areas that are not directly covered by the actual grease filter, but are also to be detected, and specifically by means of filter elements which, due to their design, oppose the inflowing, cleaned gases, a very low flow resistance, and accordingly also have a low absorption capacity for the contaminants , but are able to pick up and hold easily settling particles from the gas.
  • the arrangement of the invention equips the gas flow of the area covered as a whole to the main grease filter, where it undergoes the essential and final cleaning.
  • the extractor hood according to the invention is characterized in that the value of the flow resistance of the filter elements per unit area is less than half the value of the flow resistance of the actual one Grease filter is.
  • the actual main grease filter can consist of six layers, while the air guiding devices are equipped with filter elements made of two layers.
  • the air guiding device is preferably implemented by a drawer-like pull-out which, in the idle state, is inserted essentially below the actual main grease filter and which, in the functional position, is pulled out toward the operator, with a narrower area remaining as an overlap with the actual main grease filter.
  • the air flow channel formed between the filter element and the upper pull-out part thus ends in the suction area of the main grease filter itself and does not need to be particularly sealed, but only guided through a guide skirt, since in this area no significant flow resistance is opposed by the filter elements, which could give rise to disturbing leakage currents .
  • the extractor hood according to the invention is characterized in that input elements for controlling functions of the extractor hood are arranged within the flow space between one of the filter elements and the actual main grease filter.
  • input elements can also be sensors which detect the presence of gases to be cleaned and, as a function thereof, automatically control the operation of the extractor hood.
  • An extractor hood as shown in the figures, is suitable for typical use above hobs in kitchens. Such hobs are usually essentially square and have four hobs. 2, a projection of the position of these hotplates (15) on the underside of the extractor hood is indicated by dashed lines. An appropriately widened extractor hood can be used for wider cooktops.
  • an electric motor-operated fan 3 which draws air from the space 4 and thus generates negative pressure there and blows this air out via an outlet connection 5.
  • the room 4 is closed by a so-called fat filter 6, through which contaminated air, particularly during roasting and cooking processes, passes as a result of the negative pressure prevailing in the room 4, the grease and other contamination particles largely be absorbed in this grease filter 6.
  • the space 4 is formed in such a closed manner and the grease filter 6 is in inserted a recording that as far as possible no air is sucked in except through the grease filter.
  • a carbon filter 7 can be used within the room 4, which is able to absorb odors.
  • a drawer-like pull-out 8 is arranged in the housing of the extractor hood and can be pulled out to the front. In the figures, this is shown in the pulled-out position.
  • This drawer-like pull-out has fixed walls on the front, top and on the side walls.
  • a filter element 9 is inserted on the underside.
  • a flat channel is formed by the turns of the drawer-like pull-out and the filter element 9, which ends openly in the front region of the grease filter 6 when the drawer-like pull-out 8 is pulled out.
  • An apron 11 closes this channel 10 towards the filter 6.
  • the grease filter 6 In order to achieve the highest possible cleaning effect for the contaminated air that is brought in, the grease filter 6 must be designed as densely and homogeneously as possible, as a result of which it not only offers a high absorption capacity, but also opposes the air with a relatively high flow resistance.
  • the fan must be correspondingly powerful in order to generate the necessary, under pressure in the room 4 to overcome this grease filter 6 by the air to be cleaned. In front of the filter 6 this is not available under pressure and so a filter element is used in the present extractor hood in the drawer-like pull-out 8 brought, which, in order to be flowed through, is designed very permeable. This means that the absorption capacity of this filter element 9 is also relatively low, which is not only accepted with approval, but is also desirable.
  • the actual cleaning of the contaminated air, which is passed through the filter element 9, takes place in the same way as the cleaning of the air which is otherwise sucked in in the main grease filter 6. It is therefore not necessary to guide the drawer-like pull-out 8 and its apron 11 with regard to Specially design tightness against false currents.
  • a substantial negative pressure within the channel 10 is not built up anyway due to the lack of considerable flow resistance in the area of the filter element 9.
  • the actual main filter 6 can, for example, have eight to twelve layers in expanded metal, whereas the filter element 9 has only two to four layers of expanded metal. As a result, there is less overlap of the individual spaces between the expanded metal layers and the permeability is so low that the air flowing through can pass through almost unhindered without a significant drop in pressure.
  • Presetting input elements or sensor elements 12 can be arranged within the channel 10, that is to say above the filter element 9, which detect the rising smoke from the hotplates and evaluate it to control the extractor hood.
  • a lighting device 13 which extends longitudinally on the rear wall.
  • Operating elements 14 are inserted in the upper deck area of the drawer-like pull-out 8 and can only be operated from above when the extractor hood is in the pulled-out state.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ventilation (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Filtering Materials (AREA)

Abstract

In the case of a smoke extracting hood having a filter and a suction system arranged there behind, and also having a drawer-like pull-out element for enlarging the sucking-in area, this drawer-like pull-out element arranged in front of the fat filter is equipped with a filter element which has a substantially lower flow resistance and a substantially reduced absorption behaviour compared with the actual fat filter arranged after it in the flow direction. <IMAGE>

Description

Die vorliegende Erfindung bezieht sich auf eine Dunstabzugshaube mit einem Fettfilter und einem Saugsystem zur Beaufschlagung dieses Fettfilters mit im wesentlichen einheitlichem Unterdruck, um zu reinigende Gase, insbesondere durch Kochdünste verunreinigte Luft, durch dieses Fettfilter zu fördern, und mit einem Ansaugbereich vor dem Fettfilter, welcher durch Luftleitvorrichtungen, wie in Klappen, schubladenartige Auszüge und dgl. veränderbar ist.The present invention relates to an extractor hood with a grease filter and a suction system for applying this grease filter with a substantially uniform vacuum in order to convey gases to be cleaned, in particular air contaminated by cooking fumes, through this grease filter, and with a suction area in front of the grease filter, which is changeable by air guiding devices, such as in flaps, drawer-like pull-outs and the like.

Es ist zweckmäßig, wenn sich bei einer Küchen-Dunstabzugshaube, die oberhalb eines Kochfeldes angeordnet ist, der Aufnahmebereich der Dunstabzugshaube für die Kochdünste den Bereich des Kochfeldes zumindest überdeckt, damit möglichst viele der aufsteigenden Kochdünste durch die Dunstabzugshaube erfaßt werden. Entsprechend große Ausgestaltungen von Dunstabzugshauben und Essen sind zwar funktionstechnisch äußerst vorteilhaft, sie wirken aber in kleineren Küchen eher zu voluminös und wirken sich eher störend für die Bedienung des Kochfeldes aus. Aus diesem Grunde sind Dunstabzugshauben realisiert worden, welche an sich kleiner im Aufbau sind und die zusätzlich mit Luftleitvorrichtungen, wie Platten, schubladenartige Auszüge und dgl. ausgestattet sind, um die Auffangfläche der Dunstabzugshaube zu vergrößern. Außerdem ist es bekannt geworden, beispielsweise durch schubladenförmige Auszüge, die mit vollwertigen Fettfiltern ausgestattet sind, den Ansaugbereich der Dunstabzugshaube zu vergrößern. Bei derartigen Auszügen besteht das Problem, daß durch Undichtigkeiten im Bereich der Auszugsführungen viel Luft an den Fettfiltern zu der Saugvorrichtung und den Abluftkanälen vorbeigeleitet wird, was dazu führt, daß wesentliche Anteile der Abluft nicht gereinigt wird, sondern ungereinigt in den Bereich des Ventilators und der Abluftkanäle gelangt und diese verschmutzt. Bei einfachen, vom Fettfilter aus weggerichteten Luftleitvorrichtungen in Form von Klappen oder schubladenartigen Auszügen ist zwar diese Problematik nicht gegeben, es lagern sich aber dort Küchendünste ab und es besteht die Gefahr, daß sich dort kondensierende Küchendünste als Tropfen ausbilden, die wieder herunterfallen.It is expedient if, in the case of a kitchen extractor hood which is arranged above a hob, the receiving area of the extractor hood for the cooking vapors at least overlaps the area of the hob so that as many of the rising cooking vapors as possible are captured by the extractor hood. Correspondingly large designs of extractor hoods and food are functionally extremely advantageous, but they appear to be too voluminous in smaller kitchens and have a rather disruptive effect on the operation of the hob. For this reason, extractor hoods are Realized which are smaller in construction and which are additionally equipped with air guiding devices, such as plates, drawer-like pull-outs and the like, in order to enlarge the collecting area of the extractor hood. In addition, it has become known, for example by means of drawer-shaped pull-outs which are equipped with full-fledged grease filters, to enlarge the suction area of the extractor hood. With such extracts, there is the problem that a lot of air is directed past the grease filters to the suction device and the exhaust air ducts due to leaks in the pull-out guides, which means that substantial portions of the exhaust air are not cleaned, but are not cleaned in the area of the fan and Exhaust air ducts get dirty. With simple air guiding devices directed away from the grease filter in the form of flaps or drawer-like pull-outs, this problem does not exist, but kitchen fumes are deposited there and there is a risk that condensing kitchen fumes will form as drops that fall down again.

Es nunmehr Aufgabe der vorliegenden Erfindung, ein Konzept für eine Dunstabzugshaube zu entwickeln, bei der aufbautechnisch und funktionstechnisch die aufgezeigten Probleme gelöst sind.It is now the object of the present invention to develop a concept for an extractor hood in which the problems indicated are solved in terms of structure and function.

Eine Dunstabzugshaube mit einem Fettfilter und einem Saugsystem zur Beaufschlagung dieses Fettfilters mit Unterdruck um insbesondere zu reinigende Küchendünste anzusaugen, die der gestellten Aufgabe gerecht wird, ist erfindungsgemäß dadurch gekennzeichnet, daß die Luftleitvorrichtungen mit dem Entstehungsort der zu reinigenden Gase zugewandten Filterelementen ausgestattet sind, die gegenüber dem eigentlichen Fettfilter durch eine höhere Durchlässigkeit und durch ein wesentlich vermindertes Absorptionsverhalten auszeichnet, und daß der den anströmenden Gasen abgewandte Bereich dieser Filterelemente strömungstechnisch in den Ansaugbereichen des eigentlichen Fettfilters mündet.An extractor hood with a grease filter and a suction system for supplying this grease filter with negative pressure in order to suck in kitchen fumes to be cleaned in particular, which does the job, is characterized according to the invention in that the air guiding devices are equipped with filter elements facing the origin of the gases to be cleaned, which are opposite the real one Grease filter is characterized by a higher permeability and a significantly reduced absorption behavior, and that the area of these filter elements facing away from the inflowing gases flows into the suction areas of the actual grease filter.

Eine nach diesen erfindungsgemäßen Merkmalen ausgestattete Dunstabzugshaube zeichnet sich dadurch aus, daß endgültig für die Absorption der Fettpartikel und sonstigen beim Koch- und Bratbetrieb auftretenden Verunreinigungsstoffe der Luft das eigentliche unmittelbar oder mittelbar dem Sauglüfter vorgeschaltete Fettfilter herangezogen wird und verantwortlich ist. Dieses kann in das Gehäuse im wesentlichen luftströmungsdicht eingefügt werden, so daß keine Fehlluft in dem Ansaug- und Abluftkanal zu befürchten ist. Durch die zusätzlichen Luftleitvorrichtungen werden die nicht unmittelbar vom eigentlichen Fettfilter überdeckten, aber mit zu erfassenden Bereiche berücksichtigt, und zwar über Filterelemente, die durch ihre Ausgestaltung den anströmenden, zu reinigenden Gasen einen sehr geringen Strömungswiderstand entgegensetzen, dementsprechend auch ein geringes Absorptionsvermögen für die Verschmutzungen aufweisen, aber in der Lage sind, leicht sich absetzende Partikel aus dem Gas aufzunehmen und festzuhalten. Im übrigen wird durch die erfindungsgemäß ausgestattete Anordnung der Gasstrom des insgesamt erfaßten Bereichs dem Hauptfettfilter zugeführt, wo er die wesentliche und endgültige Reinigung erfährt.An extractor hood equipped according to these features according to the invention is characterized in that the actual fat filter connected directly or indirectly upstream of the suction fan is finally used and responsible for the absorption of the fat particles and other contaminants of the air occurring during cooking and roasting. This can be inserted into the housing in an essentially air flow-tight manner, so that there is no fear of incorrect air in the intake and exhaust air ducts. The additional air-guiding devices take into account the areas that are not directly covered by the actual grease filter, but are also to be detected, and specifically by means of filter elements which, due to their design, oppose the inflowing, cleaned gases, a very low flow resistance, and accordingly also have a low absorption capacity for the contaminants , but are able to pick up and hold easily settling particles from the gas. For the rest, the arrangement of the invention equips the gas flow of the area covered as a whole to the main grease filter, where it undergoes the essential and final cleaning.

Nach einer besonderen Ausgestaltung ist die erfindungsgemäße Dunstabzugshaube dadurch gekennzeichnet, daß pro Flächeneinheit der Wert des Strömungswiderstandes der Filterelemente kleiner als der halbe Wert des Strömungswiderstandes des eigentlichen Fettfilters ist. Bei einem Fettfilter, das beispielsweise in bekannter Weise aus geschichtetem Streckmetall besteht, kann das eigentliche Hauptfettfilter aus sechs Lagen bestehen, während die Luftleitvorrichtungen mit Filterelementen aus zwei Lagen ausgestattet sind. Bevorzugt wird die Luftleitvorrichtung durch einen schubladenartigen Auszug realisiert, der im Ruhezustand im wesentlichen unterhalb des eigentlichen Hauptfettfilters eingeschoben ist und welche in der Funktionslage nach vorne in Richtung auf die Bedienungsperson herausgezogen wird, wobei ein schmälerer Bereich als Überdeckung mit dem eigentlichen Hauptfettfilter verbleibt. Der zwischen dem Filterelement und dem Auszugoberteil gebildete Luftströmungskanal endet somit im Ansaugbereich des eigentlichen Hauptfettfilters und braucht auch nicht besonders abgedichtet, sondern ausschließlich durch Führungsschurz geleitet werden, da in diesem Bereich durch die Filterelemente kein wesentlicher Strömungswiderstand entgegengesetzt wird, der zu störenden Leckströmen Anlaß geben könnte.According to a special embodiment, the extractor hood according to the invention is characterized in that the value of the flow resistance of the filter elements per unit area is less than half the value of the flow resistance of the actual one Grease filter is. In the case of a grease filter, which for example consists of layered expanded metal in a known manner, the actual main grease filter can consist of six layers, while the air guiding devices are equipped with filter elements made of two layers. The air guiding device is preferably implemented by a drawer-like pull-out which, in the idle state, is inserted essentially below the actual main grease filter and which, in the functional position, is pulled out toward the operator, with a narrower area remaining as an overlap with the actual main grease filter. The air flow channel formed between the filter element and the upper pull-out part thus ends in the suction area of the main grease filter itself and does not need to be particularly sealed, but only guided through a guide skirt, since in this area no significant flow resistance is opposed by the filter elements, which could give rise to disturbing leakage currents .

Nach einer besonderen Ausgestaltung ist die erfindungsgemäße Dunstabzugshaube dadurch gekennzeichnet, daß innerhalb des Strömungsraums zwischen einem der Filterelemente und dem eigentlichen Hauptfettfilter Eingabeelemente zur Steuerung von Funktionen der Dunstabzugshaube angeordnet sind. Derartige Eingabeelemente können auch Sensoren sein, die das Vorhandensein von zu reinigenden Gasen erfassen und in Abhängigkeit davon den Betrieb der Dunstabzugshaube automatisch steuern.According to a special embodiment, the extractor hood according to the invention is characterized in that input elements for controlling functions of the extractor hood are arranged within the flow space between one of the filter elements and the actual main grease filter. Such input elements can also be sensors which detect the presence of gases to be cleaned and, as a function thereof, automatically control the operation of the extractor hood.

Ein nach Merkmalen der Erfindung ausgestaltetes Ausführungsbeispiel ist anhand der Zeichnung im folgenden näher beschrieben. Es zeigen:

Fig. 1
eine schematisierte Seitenansicht einer Dunstabzugshaube im Schnitt, und
Fig. 2
eine schematisierte Unteransicht dieser Dunstabzugshaube im Bereich der Filteranordnung.
An embodiment designed according to the features of the invention is described in more detail below with reference to the drawing. Show it:
Fig. 1
a schematic side view of an extractor hood in section, and
Fig. 2
a schematic bottom view of this extractor hood in the area of the filter arrangement.

Eine Dunstabzugshaube, wie sie in den Figuren dargestellt ist, ist für den typischen Einsatz oberhalb von Kochfeldern in Küchen geeignet. Derartige Kochfelder sind üblicherweise im wesentlichen quadratisch und weisen vier Kochstellen auf. In der Fig. 2 sind gestrichelt eine Projektion der Lage dieser Kochstellen (15) auf die Unterseite der Dunstabzugshaube angedeutet. Für breitere Kochfelder kann eine entsprechend verbreitert ausgestaltete Dunstabzugshaube zum Einsatz gebracht werden.An extractor hood, as shown in the figures, is suitable for typical use above hobs in kitchens. Such hobs are usually essentially square and have four hobs. 2, a projection of the position of these hotplates (15) on the underside of the extractor hood is indicated by dashed lines. An appropriately widened extractor hood can be used for wider cooktops.

Innerhalb eines Gehäuses 1 der Dunstabzugshaube 2 ist ein elektromotorisch betriebenes Gebläse 3 angeordnet, welches aus dem Raum 4 Luft ansaugt und damit dort Unterdruck erzeugt und diese Luft über einen Auslaßstutzen 5 ausbläst. Im unteren Bereich der Dunstabzugshaube, welcher dem Kochfeld zugewandt ist, ist der Raum 4 durch ein sogenanntes Fettfilter 6 abgeschlossen, durch welches insbesondere während Brat- und Kochvorgängen verunreinigte Luft infolge des im Raum 4 herrschenden Unterdrucks hindurchtritt, wobei die Fett- und sonstigen Verschmutzungspartikel weitestgehend in diesem Fettfilter 6 absorbiert werden. Der Raum 4 ist derart abgeschlossen ausgebildet und das Fettfilter 6 ist derart in eine Aufnahme eingefügt, daß möglichst keine Luft außer über das Fettfilter angesaugt wird. Für den Fall, daß die Dunstabzugshaube 2 im sogenannten Umluftbetrieb eingesetzt werden soll, wobei die Abluft über den Ausgangsstutzen 5 wieder in den Bedienungsraum zurückgeführt wird, ist innerhalb des Raumes 4 ein Kohlefilter 7 einsetzbar, welches Gerüche zu absorbieren in der Lage ist.Arranged within a housing 1 of the extractor hood 2 is an electric motor-operated fan 3 which draws air from the space 4 and thus generates negative pressure there and blows this air out via an outlet connection 5. In the lower area of the extractor hood, which faces the cooktop, the room 4 is closed by a so-called fat filter 6, through which contaminated air, particularly during roasting and cooking processes, passes as a result of the negative pressure prevailing in the room 4, the grease and other contamination particles largely be absorbed in this grease filter 6. The space 4 is formed in such a closed manner and the grease filter 6 is in inserted a recording that as far as possible no air is sucked in except through the grease filter. In the event that the extractor hood 2 is to be used in the so-called recirculating air mode, the exhaust air being returned to the operating room via the outlet connection 5, a carbon filter 7 can be used within the room 4, which is able to absorb odors.

Unterhalb des Fettfilters 6 ist im Gehäuse der Dunstabzugshaube ein schubladenartiger Auszug 8 nach vorne herausziehbar angeordnet. In den Figuren ist dieser in der herausgezogenen Stellung dargestellt. Dieser schubladenartige Auszug ist frontseitig, oben und an den Seitenwandungen mit festen Wänden versehen. An der Unterseite ist ein Filterelement 9 eingefügt. Durch die Wendungen des schubladenartigen Auszugs und das Filterelement 9 wird ein flacher Kanal gebildet, welcher im ausgezogenen Zustand des schubladenartigen Auszugs 8 im vorderen Bereich des Fettfilters 6 offen endet. Eine Schürze 11 schließt diesen Kanal 10 hin zum Filter 6 ab.Below the grease filter 6, a drawer-like pull-out 8 is arranged in the housing of the extractor hood and can be pulled out to the front. In the figures, this is shown in the pulled-out position. This drawer-like pull-out has fixed walls on the front, top and on the side walls. A filter element 9 is inserted on the underside. A flat channel is formed by the turns of the drawer-like pull-out and the filter element 9, which ends openly in the front region of the grease filter 6 when the drawer-like pull-out 8 is pulled out. An apron 11 closes this channel 10 towards the filter 6.

Um eine möglichst hohe Reinigungswirkung für die herangeführte, verschmutzte Luft zu bewirken, muß das Fettfilter 6 möglichst dicht und homogen ausgelegt werden, wodurch es nicht nur ein hohes Absorptionsvermögen bietet, sondern auch der Luft einen relativ hohen Strömungswiderstand entgegensetzt. Entsprechend leistungsstark muß der Ventilator sein, um den erfoderlichen, unter Druck im Raum 4 zur Überwindung dieses Fettfilters 6 durch die zu reinigende Luft zu erzeugen. Vor dem Filter 6 steht dieser unter Druck nicht zur Verfügung und so ist bei der vorliegenden Dunstabzugshaube im schubladenartigen Auszug 8 ein Filterelement zum Einsatz gebracht, welches, um überhaupt durchströmt zu werden, sehr durchlässig ausgestaltet ist. Damit ist auch das Absorptionsvermögen dieses Filterelements 9 relativ gering, was jedoch nicht nur billigend in Kauf genommen wird, sondern auch gewünscht ist. Die eigentliche Reinigung der verunreinigten Luft, welche über das Filterelement 9 geleitet wird, erfolgt nämlich genauso wie die Reinigung der ansonsten angesaugten Luft im eigentlichen Hauptfettfilter 6. Somit ist es auch nicht nötig, die Führungen des schubladenartigen Auszugs 8 und dessen Schürze 11 im Hinblick auf Dichtheit gegen Fehlströmungen besonders auszugestalten. Ein wesentlicher Unterdruck innerhalb des Kanals 10 wird mangels erheblichem Strömungswiderstand im Bereich des Filterelements 9 ohnehin nicht aufgebaut. Das eigentliche Hauptfilter 6 kann beispielsweise in der Ausführung durch Streckmetall acht- bis zwölf-lagig sein, während demgegenüber das Filterelement 9 lediglich zwei bis vier Streckmetall-Lagen aufweist. Dadurch findet eine geringere Überdeckung der einzelnen Zwischenräume der Streckmetall-Lagen statt und die Durchlässigkeit ist so gering, daß die durchströmende Luft annähernd ungehindert, ohne wesentlichen Druckabfall durchtreten kann.In order to achieve the highest possible cleaning effect for the contaminated air that is brought in, the grease filter 6 must be designed as densely and homogeneously as possible, as a result of which it not only offers a high absorption capacity, but also opposes the air with a relatively high flow resistance. The fan must be correspondingly powerful in order to generate the necessary, under pressure in the room 4 to overcome this grease filter 6 by the air to be cleaned. In front of the filter 6 this is not available under pressure and so a filter element is used in the present extractor hood in the drawer-like pull-out 8 brought, which, in order to be flowed through, is designed very permeable. This means that the absorption capacity of this filter element 9 is also relatively low, which is not only accepted with approval, but is also desirable. The actual cleaning of the contaminated air, which is passed through the filter element 9, takes place in the same way as the cleaning of the air which is otherwise sucked in in the main grease filter 6. It is therefore not necessary to guide the drawer-like pull-out 8 and its apron 11 with regard to Specially design tightness against false currents. A substantial negative pressure within the channel 10 is not built up anyway due to the lack of considerable flow resistance in the area of the filter element 9. The actual main filter 6 can, for example, have eight to twelve layers in expanded metal, whereas the filter element 9 has only two to four layers of expanded metal. As a result, there is less overlap of the individual spaces between the expanded metal layers and the permeability is so low that the air flowing through can pass through almost unhindered without a significant drop in pressure.

Innerhalb des Kanals 10, also oberhalb des Filterelements 9, können Voreinstell-Eingabeelemente oder Sensorelemente 12 angeordnet sein, die von den Kochstellen aufsteigenden Dunst erfassen und zur Steuerung der Dunstabzugshaube auswerten. Dadurch, daß das Filterelement 9 Fett- und sonstige Verschmutzungspartikel, die leicht bei Berührung mit festen Körpern aus der Luft ausfallen, aufgenommen werden, sind diese Elemente in diesem Kanal gegen Verunreinigung wesentlich geschützt. Vom entsprechenden Bereich des Hauptfilters 6 werden im wesentlichen die Verunreinigungsbestandteile der Luft ausgefiltert, die hauptsächlich deswegen verblieben sind, da ihre Bereitschaft zum Ausfallen aus der Luft schlechter ist.Presetting input elements or sensor elements 12 can be arranged within the channel 10, that is to say above the filter element 9, which detect the rising smoke from the hotplates and evaluate it to control the extractor hood. The fact that the filter element 9 grease and other dirt particles, which easily fall out of contact with solid bodies from the air, are taken up, these elements in this channel are substantially protected against contamination. From the corresponding area of the main filter 6, the contaminants are essentially the Filtered out air that remained mainly because of its poorer readiness to drop out of the air.

Im unteren rückwärtigen Bereich der Dunstabzugshaube ist eine an der Rückwand längs sich erstreckende Beleuchtungseinrichtung 13 angeordnet. Im oberen Deckbereich des schubladenartigen Auszugs 8 sind Bedienungselemente 14 eingefügt, die nur im ausgezogenen Zustand der Dunstabzugshaube von oben bedienbar sind.In the lower rear area of the extractor hood there is a lighting device 13 which extends longitudinally on the rear wall. Operating elements 14 are inserted in the upper deck area of the drawer-like pull-out 8 and can only be operated from above when the extractor hood is in the pulled-out state.

Claims (4)

Dunstabzugshaube mit einem Fettfilter und einem Saugsystem zur Beaufschlagung dieses Fettfilters mit im wesentlichen einheitlichem Unterdruck, um zu reinigende Gase, insbesondere Luft, durch dieses Fettfilter zu fördern, und mit einem Ansaugbereich vor dem Fettfilter, welcher durch Luftleitvorrichtungen, wie Klappen, schubladenartigen Auszügen und dgl. veränderbar ist, dadurch gekennzeichnet, daß die Luftleitvorrichtungen (8) mit dem Entstehungsort der zu reinigenden Gase zugewandten Filterelemente (9) ausgestattet sind, die sich gegenüber dem eigentlichen Fettfilter (6) durch eine höhere Durchlässigkeit und durch ein wesentlich vermindertes Absorptionsverhalten auszeichnen, und daß der den anströmenden Gasen abgewandte Bereich dieser Filterelemente (9) strömungstechnisch in den Auszugsbereich des eigentlichen Fettfilters (6) mündet.Extractor hood with a grease filter and a suction system for applying this grease filter with a substantially uniform vacuum in order to convey gases, in particular air, through this grease filter, and with a suction area in front of the grease filter, which is guided by air guiding devices such as flaps, drawer-like pull-outs and the like . is variable, characterized in that the air guiding devices (8) are equipped with the place of origin of the filter elements (9) facing the gases to be cleaned, which are distinguished from the actual grease filter (6) by a higher permeability and by a substantially reduced absorption behavior, and that the area of these filter elements (9) facing away from the inflowing gases flows into the pull-out area of the actual grease filter (6). Dunstabzugshaube nach Anspruch 1, dadurch gekennzeichnet, daß pro Flächeneinheit der Wert des Strömungswiderstandes der Filterelemente (9) zumindest gleich oder kleiner als der halbe Wert des Strömungswiderstandes des eigentlichen Fettfilters (6) ist.Extractor hood according to claim 1, characterized in that the value of the flow resistance of the filter elements (9) per unit area is at least equal to or less than half the value of the flow resistance of the actual grease filter (6). Dunstabzugshaube nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß der zwischen dem Gehäuse der Luftleitvorrichtung (8) und dem Filterelement (9) gebildete Kanal (10) zwischen diesem Filterelement (9) und dem eigentlichen Hauptfilter (6) durch eine Strömungsschürze (11) abgeschlossen ist.Extractor hood according to one of claims 1 or 2, characterized in that the channel (10) formed between the housing of the air guiding device (8) and the filter element (9) between this filter element (9) and the actual main filter (6) through a flow apron ( 11) is complete. Dunstabzugshaube nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß innerhalb des Strömungsraumes zwischen einem der Filterlemente (9) und dem eigentlichen Fettfilter (6) Eingabeelemente (12) zur Steuerung von Funktionen der Dunstabzugshaube (2) angeordnet sind.Extractor hood according to one of claims 1 to 3, characterized in that input elements (12) for controlling functions of the extractor hood (2) are arranged within the flow space between one of the filter elements (9) and the actual grease filter (6).
EP93118455A 1992-12-23 1993-11-15 Smoke extracting hood Expired - Lifetime EP0603537B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4243944 1992-12-23
DE4243944A DE4243944A1 (en) 1992-12-23 1992-12-23 Extractor hood

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EP0603537A1 true EP0603537A1 (en) 1994-06-29
EP0603537B1 EP0603537B1 (en) 1997-01-22

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ES (1) ES2099350T3 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0727620A2 (en) * 1995-02-20 1996-08-21 Bosch-Siemens Hausgeräte GmbH Smoke extracting hood
DE19825324A1 (en) * 1998-06-05 1999-12-09 Bsh Bosch Siemens Hausgeraete Domestic equipment with a deployment body, e.g. a cooker or hob with a drawer
WO2006075028A1 (en) * 2005-01-17 2006-07-20 BSH Bosch und Siemens Hausgeräte GmbH Kitchen extractor device
DE102005008373A1 (en) * 2005-02-23 2006-08-31 BSH Bosch und Siemens Hausgeräte GmbH Fume hood for domestic cooker has a bath-shaped filter device, forming underside of drawer
DE202011110424U1 (en) 2011-11-04 2014-01-23 Elica S.P.A Extractor hood for filtering gaseous substances from a domestic environment with pull-out drawer
CN110207222A (en) * 2018-10-30 2019-09-06 华帝股份有限公司 Smoke collecting box and integrated stove using same
CN112815368A (en) * 2021-01-15 2021-05-18 山东佳士博食品有限公司 Fried food processingequipment with oil smoke is handled
US11285421B2 (en) 2018-04-12 2022-03-29 Electrolux Home Products, Inc. Filter media for filtration of cooking fumes

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DE19906318B4 (en) * 1999-02-16 2004-02-12 Imperial-Werke Ohg Hood
DE10015745A1 (en) * 2000-03-29 2001-10-11 Bsh Bosch Siemens Hausgeraete Extractor hood
DE10016295A1 (en) * 2000-03-31 2001-10-04 Bsh Bosch Siemens Hausgeraete Extractor hood
DE20316130U1 (en) * 2003-10-21 2004-04-15 BSH Bosch und Siemens Hausgeräte GmbH Set of drawer extractor hoods
CN109114608B (en) * 2017-06-26 2020-11-10 博西华电器(江苏)有限公司 Control method for range hood and range hood

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0727620A2 (en) * 1995-02-20 1996-08-21 Bosch-Siemens Hausgeräte GmbH Smoke extracting hood
EP0727620A3 (en) * 1995-02-20 1997-03-12 Bosch Siemens Hausgeraete Smoke extracting hood
DE19825324A1 (en) * 1998-06-05 1999-12-09 Bsh Bosch Siemens Hausgeraete Domestic equipment with a deployment body, e.g. a cooker or hob with a drawer
DE19825324B4 (en) * 1998-06-05 2013-04-18 BSH Bosch und Siemens Hausgeräte GmbH Domestic appliance with an extension body
WO2006075028A1 (en) * 2005-01-17 2006-07-20 BSH Bosch und Siemens Hausgeräte GmbH Kitchen extractor device
US8286626B2 (en) 2005-01-17 2012-10-16 Bsh Bosch Und Siemens Hausgeraete Gmbh Kitchen extractor device
DE102005008373A1 (en) * 2005-02-23 2006-08-31 BSH Bosch und Siemens Hausgeräte GmbH Fume hood for domestic cooker has a bath-shaped filter device, forming underside of drawer
DE202011110424U1 (en) 2011-11-04 2014-01-23 Elica S.P.A Extractor hood for filtering gaseous substances from a domestic environment with pull-out drawer
US11285421B2 (en) 2018-04-12 2022-03-29 Electrolux Home Products, Inc. Filter media for filtration of cooking fumes
CN110207222A (en) * 2018-10-30 2019-09-06 华帝股份有限公司 Smoke collecting box and integrated stove using same
CN112815368A (en) * 2021-01-15 2021-05-18 山东佳士博食品有限公司 Fried food processingequipment with oil smoke is handled

Also Published As

Publication number Publication date
DE59305247D1 (en) 1997-03-06
EP0603537B1 (en) 1997-01-22
ES2099350T3 (en) 1997-05-16
DE4243944A1 (en) 1994-06-30

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