EP0703414A1 - Smoke extracting hood - Google Patents

Smoke extracting hood Download PDF

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Publication number
EP0703414A1
EP0703414A1 EP95890157A EP95890157A EP0703414A1 EP 0703414 A1 EP0703414 A1 EP 0703414A1 EP 95890157 A EP95890157 A EP 95890157A EP 95890157 A EP95890157 A EP 95890157A EP 0703414 A1 EP0703414 A1 EP 0703414A1
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EP
European Patent Office
Prior art keywords
chamber
cover plate
exhaust air
suction chamber
cleaning liquid
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EP95890157A
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German (de)
French (fr)
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EP0703414B1 (en
Inventor
Josef Ing. Lechner
Reinhart Dipl.-Ing Temmel
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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
    • F24C15/2057Removing cooking fumes using a cleaning liquid

Definitions

  • the invention relates to an extractor hood or the like.
  • a hood box which comprises an extraction chamber having an air inlet and an exhaust air outlet opening into an exhaust air connection piece, connected via a grease separator-equipped air passage to the extraction chamber, the grease separator of the air passage having a cleaning device with a spray nozzle-side spray chamber Spraying and a collecting channel for collecting and draining cleaning liquid is assigned.
  • Extractor hoods are available in a wide variety of designs, with the separators intended for dedusting and degreasing the exhaust air being arranged directly in the air inlet area of the hood box, which means that the cleaning options for these grease separators in the hood area are limited to unsatisfactory downstream flushing with cleaning fluid and thorough cleaning and removal the separator inserts and their washing outside the hoods.
  • hood boxes have so far been attached to a wall as umbrella-like individual hoods above a hotplate or the like.Mist source, there is only one air inlet on one hood box side, the rigid spray nozzles supplied by a fixed supply line require large amounts of cleaning fluid and therefore extensive installations and, last but not least, the cleaning liquid collecting in the collecting channel of the hood box must be disposed of via a wall-mounted pipeline.
  • These hoods are therefore relatively complex, can usually only be produced and installed as single pieces in an uneconomical manner and are also not suitable for installation in a ceiling cladding, as they are used in kitchens, in particular commercial kitchens.
  • the invention is therefore based on the object to remedy these defects and to provide an extractor hood of the type described which can be produced and installed efficiently and which, with a good deduction effect, is distinguished by its low-maintenance operation with the best self-cleaning effect.
  • the hood box can be prefabricated into a rectangular unit in plan, that the exhaust air chamber extends in a ring around the central suction chamber and that the air passage is composed of flow openings arranged all around, that the suction chamber has a cover plate on the bottom, the outer edge of which delimits a circumferential slot duct which forms the air inlet, that a central spraying device is provided above the cover plate with the spray nozzles which can be supplied with liquid via a supply line, and that the collecting channel is connected to a waste water connection by means of a pump device.
  • the resulting unit from the hood box can be adjusted in its dimensions to the usual grid dimensions of a ceiling cladding, a coffered ceiling or the like, so that these extractor hoods can be easily integrated into such a ceiling, the installation of the extractor hoods simultaneously with the laying of the ceiling or also can be done later at any time.
  • the ring-shaped exhaust air chamber, the central suction chamber with its circumferential air inlet and the separator inserts distributed along the circumference of the exhaust air chamber lead to large extraction and ventilation capacities even with smaller units, whereby the exhaust air can be extracted through the ceiling-mounted air ducts and the Cleaning liquid is to be disposed of by means of the sewage connection via a sewerage network on the ceiling.
  • the all-round separator inserts are located in the direct spraying area of the central spraying device, which therefore achieves a good cleaning effect even with small amounts of liquid. Since the units are completely equipped with the appropriate units, such as pumping devices and, if necessary, ventilation and lighting devices, they can be used individually or in groups to form larger units without any retrofitting work.
  • a suitable circuit can also be set up for the cleaning liquid, so that the waste water supplied to the waste water connection via the pumping device is processed and can be fed back to the spraying device, the circuit water or fresh water of course, washing and solvent can also be added via a suitable metering device.
  • the spraying device can have an all-round spraying spray head or a ring line with radial spray nozzles, but it is particularly advantageous if the spraying device consists of a spray arm which is rotatably mounted about a vertical axis, so that the spray arm rotates when a liquid is applied and rotatably sprays the grease separator inserts one after the other in regions, which ensures a high cleaning effect with low fluid consumption.
  • the structural unit can be closed off with a cover plate covering the entire cross-sectional area, which may even form the collecting channel itself or have passage openings for the drainage of the cleaning liquid into a suspended collecting channel, which creates an external air inlet with an edge extraction for the exhaust air.
  • the cover plate of the suction chamber which essentially covers the center area within the exhaust air chamber ring, is preceded by an inflow funnel which covers the cover plate-free ring area, so that the outflow air is exhausted via this inflow funnel, which exhaust air is then radially outward again from the inflow funnel along the underside of the cover plate by the one formed here Slot channel of the air inlet penetrates into the suction chamber.
  • This inflow funnel allows the use of a relatively small cover plate, which can be removed without difficulty even with a built-in extractor hood and enables easy access to the internal spraying device and the grease separators for any maintenance work.
  • cover plates and / or flow funnels form guiding surfaces for the cleaning liquid that are inclined towards the outer circumferential gutter, the cleaning liquid is drained from the hood into the outer gutter without risk of dripping, which has a sufficiently large receiving volume even with smaller cross-sections and ensures proper wastewater disposal.
  • An extractor hood 1 consists of a hood box 2 with a suction chamber 4 having an air inlet 3 and an exhaust air chamber 6 opening into an exhaust air connection 5.
  • the exhaust air chamber 6 extends in a ring around the central suction chamber 4 and is connected to it via an air passage 7, the Air passage 7 is composed of flow openings 8 arranged all around, which are equipped with grease traps 9.
  • the suction chamber 3 has a cover plate 10 which covers the central region within the exhaust air chamber ring and which is preceded by an inflow funnel 11 which covers the outer ring region which is free of the cover plate.
  • This inflow funnel 11 leads to a central extraction of the exhaust air, with an all-round, the air inlet 3 forming between the outer edge of the cover plate 10 and the inner edge of the inflow funnel 11 Slot channel 12 is formed.
  • a cover plate 13 is provided which covers the entire cross section of the hood box 2 and which, in the outer edge area with the opposite exhaust air chamber wall, delimits a circumferential slot channel 14 as the air inlet 3.
  • An inflow funnel is missing here and there is an edge extraction of the exhaust air.
  • a cleaning device 15 which comprises a central spray device 16 arranged above the cover plates 10, 13 for spraying out cleaning liquid.
  • the spray device 16 has a spray arm 17 which is rotatably mounted about a vertical axis and has spray nozzles 18, and a collecting channel 19 running around the edge serves to collect and discharge the sprayed cleaning liquid, a pump device 20 ensuring that the collecting channel 19 is connected to a waste water connection 21.
  • a supply line 23 that can be controlled via a solenoid valve 22 is set up, wherein the waste water connection 21 and the supply line 23 can be parts of a cleaning liquid circuit in a manner not shown.
  • the hood box 2 forms a rectangular unit in plan, which can be fully equipped and prepared for installation.
  • This unit is in the form of a cassette element of a conventional coffered ceiling or other arrangement of a ceiling cladding for kitchens or the like. Adapted and can therefore be integrated into such a ceiling at any time, with only the corresponding Fortlurt connection or water and electrical connection then being provided is.
  • the exhaust air (see arrows) is sucked into the suction chamber 4 via the air inlet 3, for which purpose A suitable negative pressure is applied, for example, via the exhaust air connection, from which suction chamber 4 the exhaust air penetrates through the air passage 7 into the exhaust air chamber 6.
  • the waste water passes through passage openings 24, 25 in the inflow funnel 11 or in the cover plate 13 into the collecting trough 19, the cover plates 10, 13 or the inflow funnel 11 forming outwardly inclined guide surfaces for better drainage of the cleaning liquid, and then from the collecting trough 19 the waste water for disposal via the pumping device 20 is conveyed to the waste water connection 21.

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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)
  • Cleaning In General (AREA)

Abstract

The cowl (1) has a casing (2) containing an exhausting chamber (4) with an air inlet (3), also a discharge-air chamber (6) connected to the exhausting one by a passage (7) containing the grease-separator. The latter is cleaned by nozzles spraying cleaning liquid, which is collected in a trough (19) and drained off. The casing is prefabricated and rectangular in plan view. The passage is formed by ports (8) at intervals round the periphery, and the exhausting chamber has a bottom cover plate (10). Above the plate is a central sprayer unit (16) with nozzles (18), which are supplied by pipe with cleaning liquid. A pump connects the trough to a drain union. The sprayer unit can have a sprayer arm (17) rotating on a vertical axis.

Description

Die Erfindung bezieht sich auf eine Dunstabzugshaube od. dgl. mit einem Haubenkasten, der eine einen Lufteinlaß aufweisende Absaugkammer und eine in einen Fortluftanschlußstutzen ausmündende, über einen fettabscheiderbestückten Luftdurchlaß an die Absaugkammer anschließende Fortluftkammer umfaßt, wobei dem Fettabscheider des Luftdurchlasses eine Reinigungseinrichtung mit absaugkammerseitigen Spritzdüsen zum Aufspritzen und einer Sammelrinne zum Sammeln und Ableiten von Reinigungsflüssigkeit zugeordnet ist.The invention relates to an extractor hood or the like. With a hood box, which comprises an extraction chamber having an air inlet and an exhaust air outlet opening into an exhaust air connection piece, connected via a grease separator-equipped air passage to the extraction chamber, the grease separator of the air passage having a cleaning device with a spray nozzle-side spray chamber Spraying and a collecting channel for collecting and draining cleaning liquid is assigned.

Dunstabzugshauben gibt es in den verschiedensten Ausführungen, wobei vielfach die zum Entstauben und Entfetten der Abluft vorgesehenen Abscheider unmittelbar im Lufteinlaßbereich des Haubenkastens angeordnet sind, wodurch sich die Reinigungsmöglichkeiten für diese Fettabscheider im Haubenbereich auf ein unbefriedigendes abströmseitiges Spülen mit Reinigungsflüssigkeit beschränkt und ein gründliches Reinigen ein Ausbauen der Abscheidereinsätze und deren Waschen außerhalb der Hauben verlangt.Extractor hoods are available in a wide variety of designs, with the separators intended for dedusting and degreasing the exhaust air being arranged directly in the air inlet area of the hood box, which means that the cleaning options for these grease separators in the hood area are limited to unsatisfactory downstream flushing with cleaning fluid and thorough cleaning and removal the separator inserts and their washing outside the hoods.

Wie die DE-A 26 50 435 zeigt, gibt es aber auch schon Dunstabzugshauben mit einem in Absaugkammer und Fortluftkammer unterteilten Haubenkasten, bei denen die Fettabscheider in Luftdurchlässen zwischen diesen Kammern eingesetzt sind. Wegen der die Fettabscheider nach außen abdeckenden Absaugkammern ergibt sich nicht nur ein gefälliger optischer Eindruck, sondern es läßt sich vor allem auch eine anströmseitige Reinigung der Fettabscheider durch ein Aufspritzen von Reinigungsflüssigkeit vornehmen, was im Haubenbereich die Reinigung der verschmutzungsanfälligen Abscheiderteile erlaubt und außerdem zusätzlich zur chemischen Reinigungswirkung durch die Reinigungsflüssigkeit noch eine spritzbedingte mechanische Reinigungswirkung mit sich bringt. Allerdings sind diese Haubenkasten bisher jeweils für sich als schirmartige Einzelhauben oberhalb einer Kochstelle od. dgl. Dunstquelle an einer Wand zu befestigen, es gibt nur an einer Haubenkastenseite einen Lufteinlaß, die starren, über eine festverlegte Zuleitung versorgten Spritzdüsen erfordern große Mengen an Reinigungsflüssigkeit und damit umfangreiche Installationen und nicht zuletzt muß die sich in der Sammelrinne des Haubenkastens sammelnde Reinigungsflüssigkeit über eine wandverlegte Rohrleitung entsorgt werden. Diese Abzugshauben sind daher verhältnismäßig aufwendig, können meist nur in unwirtschaftlicher Weise als Einzelstükke hergestellt und installiert werden und eignen sich auch nicht zum Einbau in eine Deckenverkleidung, wie sie in Küchen, insbesondere Großküchen, Verwendung finden.As DE-A 26 50 435 shows, there are already extractor hoods with a hood box divided into the suction chamber and exhaust air chamber, in which the grease separators are used in air passages between these chambers. Because of the suction chambers that cover the grease separators on the outside, there is not only a pleasing visual impression, Rather, it is also possible to clean the grease separator on the upstream side by spraying cleaning liquid on it, which allows the cleaning of the separator parts susceptible to contamination in the hood area and, in addition to the chemical cleaning action by the cleaning liquid, also brings about a spray-related mechanical cleaning action. However, these hood boxes have so far been attached to a wall as umbrella-like individual hoods above a hotplate or the like.Mist source, there is only one air inlet on one hood box side, the rigid spray nozzles supplied by a fixed supply line require large amounts of cleaning fluid and therefore extensive installations and, last but not least, the cleaning liquid collecting in the collecting channel of the hood box must be disposed of via a wall-mounted pipeline. These hoods are therefore relatively complex, can usually only be produced and installed as single pieces in an uneconomical manner and are also not suitable for installation in a ceiling cladding, as they are used in kitchens, in particular commercial kitchens.

Der Erfindung liegt daher die Aufgabe zugrunde, diese Mängel zu beseitigen und eine Dunstabzugshaube der eingangs geschilderten Art zu schaffen, die rationell herstellbar und installierbar ist und die sich bei guter Abzugswirkung durch ihren wartungsarmen Betrieb mit bestem Selbstreinigungseffekt auszeichnet.The invention is therefore based on the object to remedy these defects and to provide an extractor hood of the type described which can be produced and installed efficiently and which, with a good deduction effect, is distinguished by its low-maintenance operation with the best self-cleaning effect.

Die Erfindung löst diese Aufgabe dadurch, daß der Haubenkasten zu einer im Grundriß rechteckigen Baueinheit vorfertigbar ist, daß sich die Fortluftkammer ringförmig um die mittige Absaugkammer erstreckt und sich der Luftdurchlaß aus rundum verteilt angeordneten Durchströmöffnungen zusammensetzt, daß die Absaugkammer ein bodenseitiges Deckblech aufweist, dessen Außenrand einen umlaufenden, den Lufteinlaß bildenden Schlitzkanal begrenzt, daß oberhalb des Deckbleches eine mittige Spritzvorrichtung mit den über eine Versorgungsleitung flüssigkeitsbeaufschlagbaren Spritzdüsen vorgesehen ist und daß die Sammelrinne mittels einer Pumpeinrichtung an einen Abwasseranschluß angeschlossen ist. Die durch den Haubenkasten entstehende Baueinheit läßt sich in ihren Abmessungen an übliche Rastermaße einer Deckenverkleidung, einer Kassettendecke od. dgl. anpassen, so daß diese Dunstabzugshauben schwierigkeitslos in eine solche Decke integrierbar sind, wobei der Einbau der Dunstabzugshauben gleichzeitig mit dem Verlegen der Decke oder auch zu einem beliebigen Zeitpunkt nachträglich erfolgen kann. Die ringförmige Fortluftkammer, die mittige Absaugkammer mit ihrem umlaufenden Lufteinlaß und die entlang des Umfangs der Fortluftkammer verteilt angeordneten Abscheidereinsätze führen auch bei kleineren Einheiten zu großen Abzugs- und Entlüftungsleistungen, wobei durch den Fortluftanschlußstutzen die Fortluft über beliebig verlegte deckenseitige Luftleitungen abgesaugt werden kann und auch die Reinigungsflüssigkeit mittels des Abwasseranschlusses über ein deckenseitiges Abwasserleitungsnetz zu entsorgen ist. Dazu kommt noch, daß die rundum angeordneten Abscheidereinsätze im direkten Aufspritzbereich der mittigen Spritzvorrichtung liegen, die daher auch mit geringen Flüssigkeitsmengen eine gute Reinigungswirkung erzielt. Da die Baueinheiten komplett mit den entsprechenden Aggregaten, wie Pumpeneinrichtungen und gegebenenfalls Ventilations- und Beleuchtungseinrichtungen, ausgestattet sind, können sie ohne Umrüstarbeiten einzeln oder gruppenweise zu größeren Einheiten kombiniert eingesetzt werden. Auch läßt sich für die Reinigungsflüssigkeit ein geeigneter Kreislauf einrichten, so daß das über die Pumpeinrichtung dem Abwasseranschluß zugeförderte Abwasser aufbereitet wird und wieder der Spritzvorrichtung zuführbar ist, wobei dem Kreislaufwasser oder Frischwasser selbstverständlich auch über eine geeignete Dosiereinrichtung Wasch- und Lösungsmittel zugesetzt werden kann.The invention solves this problem in that the hood box can be prefabricated into a rectangular unit in plan, that the exhaust air chamber extends in a ring around the central suction chamber and that the air passage is composed of flow openings arranged all around, that the suction chamber has a cover plate on the bottom, the outer edge of which delimits a circumferential slot duct which forms the air inlet, that a central spraying device is provided above the cover plate with the spray nozzles which can be supplied with liquid via a supply line, and that the collecting channel is connected to a waste water connection by means of a pump device. The resulting unit from the hood box can be adjusted in its dimensions to the usual grid dimensions of a ceiling cladding, a coffered ceiling or the like, so that these extractor hoods can be easily integrated into such a ceiling, the installation of the extractor hoods simultaneously with the laying of the ceiling or also can be done later at any time. The ring-shaped exhaust air chamber, the central suction chamber with its circumferential air inlet and the separator inserts distributed along the circumference of the exhaust air chamber lead to large extraction and ventilation capacities even with smaller units, whereby the exhaust air can be extracted through the ceiling-mounted air ducts and the Cleaning liquid is to be disposed of by means of the sewage connection via a sewerage network on the ceiling. In addition, the all-round separator inserts are located in the direct spraying area of the central spraying device, which therefore achieves a good cleaning effect even with small amounts of liquid. Since the units are completely equipped with the appropriate units, such as pumping devices and, if necessary, ventilation and lighting devices, they can be used individually or in groups to form larger units without any retrofitting work. A suitable circuit can also be set up for the cleaning liquid, so that the waste water supplied to the waste water connection via the pumping device is processed and can be fed back to the spraying device, the circuit water or fresh water of course, washing and solvent can also be added via a suitable metering device.

Die Spritzvorrichtung kann einen rundum spritzenden Spritzkopf oder eine Ringleitung mit radialen Spritzdüsen aufweisen, besonders vorteilhaft ist es jedoch, wenn die Spritzvorrichtung aus einem um eine Vertikalachse drehbar gelagerten Sprüharm besteht, so daß der Sprüharm bei einer Flüssigkeitsbeaufschlagung rotiert und drehend die Fettabscheidereinsätze bereichsweise nacheinander bespritzt, wodurch eine hohe Reinigungswirkung bei geringem Flüssigkeitsbedarf gewährleistet ist.The spraying device can have an all-round spraying spray head or a ring line with radial spray nozzles, but it is particularly advantageous if the spraying device consists of a spray arm which is rotatably mounted about a vertical axis, so that the spray arm rotates when a liquid is applied and rotatably sprays the grease separator inserts one after the other in regions, which ensures a high cleaning effect with low fluid consumption.

Nach unten zu kann die Baueinheit durchaus mit einem die gesamte Querschnittsfläche überdeckenden Deckblech abgeschlossen sein, das eventuell selbst die Sammelrinne ausformt oder Durchlaßöffnungen für den Abfluß der Reinigungsflüssigkeit in eine abgehängte Sammelrinne aufweist, wodurch ein außen umlaufender Lufteinlaß mit einem Randabzug für die Abluft entsteht. Zweckmäßigerweise ist aber dem im wesentlichen den Mittenbereich innerhalb des Fortluftkammerringes überdeckenden Deckblech der Absaugkammer ein den deckblechfreien Ringbereich überdeckender Anströmtrichter vorgeordnet, so daß über diesen Anströmtrichter ein Mittenabzug der Abluft erfolgt, welche Abluft dann aus dem Anströmtrichter wieder radial auswärts entlang der Deckblechunterseite durch den hier ausgebildeten Schlitzkanal des Lufteinlasses in die Absaugkammer dringt. Dieser Anströmtrichter erlaubt den Einsatz eines verhältnismäßig klein bemessenen Deckbleches, das sich ohne Schwierigkeiten auch bei eingebauter Dunstabzugshaube abnehmen läßt und einen einfachen Zugang zur inneren Spritzvorrichtung und den Fettabscheidern für etwaige Wartungsarbeiten freigibt.At the bottom, the structural unit can be closed off with a cover plate covering the entire cross-sectional area, which may even form the collecting channel itself or have passage openings for the drainage of the cleaning liquid into a suspended collecting channel, which creates an external air inlet with an edge extraction for the exhaust air. Expediently, however, the cover plate of the suction chamber, which essentially covers the center area within the exhaust air chamber ring, is preceded by an inflow funnel which covers the cover plate-free ring area, so that the outflow air is exhausted via this inflow funnel, which exhaust air is then radially outward again from the inflow funnel along the underside of the cover plate by the one formed here Slot channel of the air inlet penetrates into the suction chamber. This inflow funnel allows the use of a relatively small cover plate, which can be removed without difficulty even with a built-in extractor hood and enables easy access to the internal spraying device and the grease separators for any maintenance work.

Bilden Deckblech und/oder Anströmtrichter zu der außen umlaufenden Sammelrinne hin geneigte Leitflächen für die Reinigungsflüssigkeit, wird die Reinigungsflüssigkeit ohne Gefahr eines Abtropfens von der Haube in die äußere Sammelrinne abgeführt, die auch bei kleineren Querschnitten ein ausreichend großes Aufnahmevolumen besitzt und eine ordnungsgemäβe Abwasserentsorgung gewährleistet.If cover plates and / or flow funnels form guiding surfaces for the cleaning liquid that are inclined towards the outer circumferential gutter, the cleaning liquid is drained from the hood into the outer gutter without risk of dripping, which has a sufficiently large receiving volume even with smaller cross-sections and ensures proper wastewater disposal.

In der Zeichnung ist der Erfindungsgegenstand beispielsweise dargestellt, und zwar zeigen

Fig. 1
eine erfindungsgemäße Dunstabzugshaube im Vertikalschnitt nach der Linie I-I der Fig. 2,
Fig. 2
diese Dunstabzugshaube im Horizontalschnitt nach der Linie II-II der Fig. 1 kleineren Maßstabes sowie
Fig. 3
ein etwas geändertes Ausführungsbeispiel einer erfindungsgemäßen Dunstabzugshaube im Vertikalschnitt ähnlich Fig. 1.
In the drawing, the subject matter of the invention is shown, for example, and show
Fig. 1
an extractor hood according to the invention in vertical section along the line II of FIG. 2,
Fig. 2
this extractor hood in horizontal section along the line II-II of FIG. 1 smaller scale and
Fig. 3
a slightly modified embodiment of an extractor hood according to the invention in vertical section similar to FIG. 1st

Eine Dunstabzugshaube 1 besteht aus einem Haubenkasten 2 mit einer einen Lufteinlaß 3 aufweisenden Absaugkammer 4 und einer in einen Fortluftanschluß 5 ausmündenden Fortluftkammer 6. Die Fortluftkammer 6 erstreckt sich ringförmig um die mittige Absaugkammer 4 und ist an diese über einen Luftdurchlaß 7 angeschlossen, wobei sich der Luftdurchlaß 7 aus rundum verteilt angeordneten Durchströmöffnungen 8 zusammensetzt, die mit Fettabscheidern 9 bestückt sind.An extractor hood 1 consists of a hood box 2 with a suction chamber 4 having an air inlet 3 and an exhaust air chamber 6 opening into an exhaust air connection 5. The exhaust air chamber 6 extends in a ring around the central suction chamber 4 and is connected to it via an air passage 7, the Air passage 7 is composed of flow openings 8 arranged all around, which are equipped with grease traps 9.

Die Absaugkammer 3 weist gemäß dem Ausführungsbeispiel nach Fig. 1 und 2 ein den Mittenbereich innerhalb des Fortluftkammerringes überdeckendes Deckblech 10 auf, dem ein den deckblechfreien äußeren Ringbereich überdeckender Anströmtrichter 11 vorgeordnet ist. Dieser Anströmtrichter 11 führt zu einem Mittenabzug der Abluft, wobei zwischen dem Außenrand des Deckbleches 10 und dem Innenrand des Anströmtrichters 11 ein rundumlaufender, den Lufteinlaß 3 bildender Schlitzkanal 12 entsteht.1 and 2, the suction chamber 3 has a cover plate 10 which covers the central region within the exhaust air chamber ring and which is preceded by an inflow funnel 11 which covers the outer ring region which is free of the cover plate. This inflow funnel 11 leads to a central extraction of the exhaust air, with an all-round, the air inlet 3 forming between the outer edge of the cover plate 10 and the inner edge of the inflow funnel 11 Slot channel 12 is formed.

Gemäß dem Ausführungsbeispiel nach Fig. 3 ist ein den gesamten Querschnitt des Haubenkastens 2 überdeckendes Deckblech 13 vorgesehen, das im Außenrandbereich mit der gegenüberliegenden Fortluftkammerwand einen rundumlaufenden Schlitzkanal 14 als Lufteinlaß 3 begrenzt. Hier fehlt ein Anströmtrichter und es kommt zu einem Randabzug der Abluft.According to the exemplary embodiment according to FIG. 3, a cover plate 13 is provided which covers the entire cross section of the hood box 2 and which, in the outer edge area with the opposite exhaust air chamber wall, delimits a circumferential slot channel 14 as the air inlet 3. An inflow funnel is missing here and there is an edge extraction of the exhaust air.

Zur Reinigung der Fettabscheider 9 ist eine Reinigungsvorrichtung 15 vorgesehen, die eine oberhalb der Deckbleche 10, 13 angeordnete mittige Spritzvorrichtung 16 zum Ausspritzen von Reinigungsflüssigkeit umfaßt. Die Spritzvorrichtung 16 weist einen um eine Vertikalachse drehbar gelagerten Sprüharm 17 mit Spritzdüsen 18 auf und eine randseitig umlaufende Sammelrinne 19 dient zum Sammeln und Ableiten der verspritzten Reinigungsflüssigkeit, wobei eine Pumpeinrichtung 20 für eine Verbindung der Sammelrinne 19 mit einem Abwasseranschluß 21 sorgt. Zur Versorgung der Spritzvorrichtung 16 mit Reinigungsflüssigkeit ist eine über ein Magnetventil 22 steuerbare Versogungsleitung 23 eingerichtet, wobei in nicht weiter dargestellter Weise Abwasseranschluß 21 und Versorgungsleitung 23 Teile eines Reinigungsflüssigkeitskreislaufes sein können.To clean the grease separators 9, a cleaning device 15 is provided, which comprises a central spray device 16 arranged above the cover plates 10, 13 for spraying out cleaning liquid. The spray device 16 has a spray arm 17 which is rotatably mounted about a vertical axis and has spray nozzles 18, and a collecting channel 19 running around the edge serves to collect and discharge the sprayed cleaning liquid, a pump device 20 ensuring that the collecting channel 19 is connected to a waste water connection 21. To supply the spraying device 16 with cleaning liquid, a supply line 23 that can be controlled via a solenoid valve 22 is set up, wherein the waste water connection 21 and the supply line 23 can be parts of a cleaning liquid circuit in a manner not shown.

Der Haubenkasten 2 bildet eine im Grundriß rechteckige Baueinheit, die vollständig ausgerüstet und für einen Einbau vorbereitet werden kann. Diese Baueinheit ist in ihrer Form einem Kassettenelement einer üblichen Kassettendecke oder einer anderen Einteilung eine Deckenverkleidung für Küchen od. dgl. angepaßt und läßt sich daher jederzeit in eine solche Decke integrieren, wobei dann lediglich für den entsprechenden Fortlurtanschluß bzw. Wasser- und Elektroanschluß zu sorgen ist. Im Betrieb wird die Abluft (siehe Pfeile) über den Lufteinlaß 3 in die Absaugkammer 4 gesaugt, wozu eine geeignete Unterdruckbeaufschlagung beispielsweise über den Fortluftanschluß erfolgt, aus welcher Absaugkammer 4 die Abluft durch den Luftdurchlaß 7 in die Fortluftkammer 6 dringt. Beim Durchströmen des Luftdurchlasses 7 werden an den Fettabscheidern 9 Staub- und Fetteilchen aus der Abluft abgesondert und weitgehend gereinigte Fortluft zieht durch den Fortluftanschlußstutzen 5 ab. Die Fettabscheider 9 lassen sich periodisch über die Reinigungseinrichtung 15 reinigen, wozu lediglich das Magnetventil 22 geöffnet und die Versorgungsleitung 23 mit Reinigungsflüssigkeit beaufschlagt zu werden braucht, die dann über den sich dabei drehenden Sprüharm 17 und die Spritzdüsen 18 ausgespritzt wird. Die auf die Abscheider 9 gespritzte Reinigungsflüssigkeit löst die abgesonderten Verunreinigungen und spült sie fort, wobei chemische und mechanische Reinigungskräfte genutzt werden. Das Abwasser gelangt über Durchlaßöffnungen 24, 25 im Anströmtrichter 11 bzw. im Deckblech 13 in die Sammelrinne 19, wobei die Deckbleche 10, 13 bzw. der Anströmtrichter 11 absaugkammerseitig auswärts geneigte Leitflächen zum besseren Abfluß der Reinigungsflüssigkeit bilden, und von der Sammelrinne 19 wird dann das Abwasser zur Entsorgung über die Pumpeinrichtung 20 dem Abwasseranschluß 21 zugefördert.The hood box 2 forms a rectangular unit in plan, which can be fully equipped and prepared for installation. This unit is in the form of a cassette element of a conventional coffered ceiling or other arrangement of a ceiling cladding for kitchens or the like. Adapted and can therefore be integrated into such a ceiling at any time, with only the corresponding Fortlurt connection or water and electrical connection then being provided is. In operation, the exhaust air (see arrows) is sucked into the suction chamber 4 via the air inlet 3, for which purpose A suitable negative pressure is applied, for example, via the exhaust air connection, from which suction chamber 4 the exhaust air penetrates through the air passage 7 into the exhaust air chamber 6. When flowing through the air outlet 7, dust and grease particles are separated from the exhaust air at the grease separators 9 and largely cleaned exhaust air is drawn off through the exhaust air connecting piece 5. The grease separators 9 can be cleaned periodically via the cleaning device 15, for which purpose only the solenoid valve 22 needs to be opened and the supply line 23 needs to be supplied with cleaning liquid, which is then sprayed out via the rotating spray arm 17 and the spray nozzles 18. The cleaning liquid sprayed onto the separators 9 dissolves the separated impurities and rinses them away, chemical and mechanical cleaning forces being used. The waste water passes through passage openings 24, 25 in the inflow funnel 11 or in the cover plate 13 into the collecting trough 19, the cover plates 10, 13 or the inflow funnel 11 forming outwardly inclined guide surfaces for better drainage of the cleaning liquid, and then from the collecting trough 19 the waste water for disposal via the pumping device 20 is conveyed to the waste water connection 21.

Claims (4)

Dunstabzugshaube (1) od. dgl. mit einem Haubenkasten (2), der eine einen Lufteinlaß (3) aufweisende Absaugkammer (4) und eine in einen Fortluftanschlußstutzen ausmündende, über einen fettabscheiderbestückten Luftdurchlaß (7) an die Absaugkammer (4) anschließende Fortluftkammer (6) umfaßt, wobei dem Fettabscheider des Luftdurchlasses (7) eine Reinigungseinrichtung mit absaugkammerseitigen Spritzdüsen (18) zum Aufspritzen und einer Sammelrinne (19) zum Sammeln und Ableiten von Reinigungsflüssigkeit zugeordnet ist, dadurch gekennzeichnet, daß der Haubenkasten (2) zu einer im Grundriß rechteckigen Baueinheit vorfertigbar ist, daß sich die Fortluftkammer (6) ringförmig um die mittige Absaugkammer (4) erstreckt und sich der Luftdurchlaß (7) aus rundum verteilt angeordneten Durchströmöffnungen (8) zusammensetzt, daß die Absaugkammer (4) ein bodenseitiges Deckblech (10, 13) aufweist, dessen Außenrand einen umlaufenden, den Lufteinlaß (3) bildenden Schlitzkanal (12, 14) begrenzt, daß oberhalb des Deckbleches (10, 13) eine mittige Spritzvorrichtung (16) mit den über eine Versorgungsleitung (23) flüssigkeitsbeaufschlagbaren Spritzdüsen (18) vorgesehen ist und daß die Sammelrinne (19) mittels einer Pumpeinrichtung (20) an einen Abwasseranschluß (21) angeschlossen ist.Extractor hood (1) or the like with a hood box (2) which has a suction chamber (4) with an air inlet (3) and an exhaust air chamber (4) which opens into an exhaust air connector and connects to the suction chamber (4) via a grease separator air passage (7). 6), wherein the grease separator of the air passage (7) is assigned a cleaning device with spray chamber-side spray nozzles (18) for spraying and a collecting channel (19) for collecting and draining cleaning liquid, characterized in that the hood box (2) has a floor plan rectangular unit can be prefabricated that the exhaust air chamber (6) extends in a ring around the central suction chamber (4) and the air passage (7) is composed of flow openings (8) distributed all around, that the suction chamber (4) has a cover plate (10, 13), the outer edge of which defines a circumferential slot duct (12, 14) forming the air inlet (3) It is indicated that above the cover plate (10, 13) there is a central spraying device (16) with the spray nozzles (18) which can be supplied with liquid via a supply line (23) and that the collecting channel (19) is connected to a waste water connection (21.) by means of a pump device (20) ) connected. Dunstabzugshaube nach Anspruch 1, dadurch gekennzeichnet, daß die Spritzvorrichtung (16) aus einem um eine Vertikalachse drehbar gelagerten Sprüharm (17) besteht.Extractor hood according to claim 1, characterized in that the spray device (16) consists of a spray arm (17) rotatably mounted about a vertical axis. Dunstabzugshaube nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß dem im wesentlichen den Mittenbereich innerhalb des Fortluftkammerringes überdeckenden Deckblech (10) der Absaugkammer (4) ein den deckblechfreien Ringbereich überdeckender Anströmtrichter (11) vorgeordnet ist.Extractor hood according to claim 1 or 2, characterized in that the cover plate (10) of the suction chamber (4) which essentially covers the central area within the exhaust air chamber ring is preceded by an inflow funnel (11) covering the ring area free of the cover plate. Dunstabzugshaube nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß Deckblech (10, 13) und/oder Anströmtrichter (11) zu der außen umlaufenden Sammelrinne (19) hin geneigte Leitflächen für die Reinigungsflüssigkeit bilden.Extractor hood according to one of Claims 1 to 3, characterized in that the cover plate (10, 13) and / or the inflow funnel (11) form guide surfaces for the cleaning liquid which are inclined towards the collecting channel (19) which runs around the outside.
EP95890157A 1994-09-08 1995-09-06 Smoke extracting hood Expired - Lifetime EP0703414B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0172194A AT401102B (en) 1994-09-08 1994-09-08 COOKER HOOD OD. DGL.
AT1721/94 1994-09-08

Publications (2)

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EP0703414A1 true EP0703414A1 (en) 1996-03-27
EP0703414B1 EP0703414B1 (en) 1998-07-08

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ID=3519573

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95890157A Expired - Lifetime EP0703414B1 (en) 1994-09-08 1995-09-06 Smoke extracting hood

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EP (1) EP0703414B1 (en)
AT (1) AT401102B (en)
DE (1) DE59502750D1 (en)
ES (1) ES2118528T3 (en)
IL (1) IL115180A (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000056202A2 (en) * 1999-03-22 2000-09-28 Langner Manfred H Method and device for cleaning extractor hoods
DE10221314A1 (en) * 2002-05-08 2003-12-04 Berbel Ablufttechnik Gmbh Particulate matter separator for air flow in oven has front region of upper plate curved upwards and front region of bottom plate curved outwards
EP1411301A2 (en) * 2002-09-26 2004-04-21 BSH Bosch und Siemens Hausgeräte GmbH Extractor hood device
EP1543273A1 (en) * 2002-08-16 2005-06-22 Kim Lui So Self-cleaning exhaust system and method
US7470298B2 (en) 2002-05-08 2008-12-30 Berbel Ablufttechnik Gmbh Device for effectively removing suspended particles from an airflow
EP2808613B1 (en) * 2013-05-29 2016-12-07 Seaking OY Hood extractor
CN106594838A (en) * 2017-02-20 2017-04-26 广东美的厨房电器制造有限公司 Self-cleaning device for range hood oil net, oil net module with same and range hood
CN106885282A (en) * 2017-03-31 2017-06-23 广东美的厨房电器制造有限公司 Lampblack absorber
CN106958846A (en) * 2017-05-23 2017-07-18 广东美的厨房电器制造有限公司 Range hood
WO2018214276A1 (en) * 2017-05-23 2018-11-29 广东美的厨房电器制造有限公司 Exhaust hood
CN110360633A (en) * 2019-07-31 2019-10-22 中山市博一电器有限公司 A kind of automatically cleaning kitchen ventilator
CN110793083A (en) * 2019-11-14 2020-02-14 东莞市泽威五金制品有限公司 Range hood and range hood system
CN112879954A (en) * 2021-01-25 2021-06-01 宁波方太厨具有限公司 Integrated cooking machine
WO2024033524A1 (en) * 2022-08-11 2024-02-15 Alain Lange Extractor hood

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US3653179A (en) * 1967-10-02 1972-04-04 Cockle Ventilator Co Inc Grease extractor method
DE2650435A1 (en) 1975-11-12 1977-05-26 Giovanna Sa H VENTILATION EXHAUST
US4071019A (en) * 1976-04-08 1978-01-31 Industrial Industries, Inc. Grease extractor
US4103676A (en) * 1976-11-03 1978-08-01 Kastner Karl F Grease extraction cartridge for kitchen exhaust ventilator

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Publication number Priority date Publication date Assignee Title
US3653179A (en) * 1967-10-02 1972-04-04 Cockle Ventilator Co Inc Grease extractor method
DE2650435A1 (en) 1975-11-12 1977-05-26 Giovanna Sa H VENTILATION EXHAUST
US4071019A (en) * 1976-04-08 1978-01-31 Industrial Industries, Inc. Grease extractor
US4103676A (en) * 1976-11-03 1978-08-01 Kastner Karl F Grease extraction cartridge for kitchen exhaust ventilator

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000056202A2 (en) * 1999-03-22 2000-09-28 Langner Manfred H Method and device for cleaning extractor hoods
WO2000056202A3 (en) * 1999-03-22 2000-12-21 Manfred H Langner Method and device for cleaning extractor hoods
DE10221314A1 (en) * 2002-05-08 2003-12-04 Berbel Ablufttechnik Gmbh Particulate matter separator for air flow in oven has front region of upper plate curved upwards and front region of bottom plate curved outwards
US7470298B2 (en) 2002-05-08 2008-12-30 Berbel Ablufttechnik Gmbh Device for effectively removing suspended particles from an airflow
EP1543273A1 (en) * 2002-08-16 2005-06-22 Kim Lui So Self-cleaning exhaust system and method
EP1543273A4 (en) * 2002-08-16 2005-12-21 Kim Lui So Self-cleaning exhaust system and method
EP1411301A2 (en) * 2002-09-26 2004-04-21 BSH Bosch und Siemens Hausgeräte GmbH Extractor hood device
EP1411301A3 (en) * 2002-09-26 2005-08-31 BSH Bosch und Siemens Hausgeräte GmbH Extractor hood device
EP2808613B1 (en) * 2013-05-29 2016-12-07 Seaking OY Hood extractor
CN106594838A (en) * 2017-02-20 2017-04-26 广东美的厨房电器制造有限公司 Self-cleaning device for range hood oil net, oil net module with same and range hood
CN106885282A (en) * 2017-03-31 2017-06-23 广东美的厨房电器制造有限公司 Lampblack absorber
CN106958846A (en) * 2017-05-23 2017-07-18 广东美的厨房电器制造有限公司 Range hood
WO2018214276A1 (en) * 2017-05-23 2018-11-29 广东美的厨房电器制造有限公司 Exhaust hood
CN110360633A (en) * 2019-07-31 2019-10-22 中山市博一电器有限公司 A kind of automatically cleaning kitchen ventilator
CN110793083A (en) * 2019-11-14 2020-02-14 东莞市泽威五金制品有限公司 Range hood and range hood system
CN112879954A (en) * 2021-01-25 2021-06-01 宁波方太厨具有限公司 Integrated cooking machine
WO2024033524A1 (en) * 2022-08-11 2024-02-15 Alain Lange Extractor hood
FR3138935A1 (en) * 2022-08-11 2024-02-23 Alain LANGE Suction hood

Also Published As

Publication number Publication date
ATA172194A (en) 1995-10-15
EP0703414B1 (en) 1998-07-08
IL115180A0 (en) 1995-12-31
IL115180A (en) 2000-02-29
DE59502750D1 (en) 1998-08-13
ES2118528T3 (en) 1998-09-16
AT401102B (en) 1996-06-25

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