EP3045822B1 - Extarctor hood - Google Patents

Extarctor hood Download PDF

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Publication number
EP3045822B1
EP3045822B1 EP16150899.9A EP16150899A EP3045822B1 EP 3045822 B1 EP3045822 B1 EP 3045822B1 EP 16150899 A EP16150899 A EP 16150899A EP 3045822 B1 EP3045822 B1 EP 3045822B1
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EP
European Patent Office
Prior art keywords
exhaust air
exhaust
lower device
extractor
extractor hood
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.)
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Application number
EP16150899.9A
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German (de)
French (fr)
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EP3045822A1 (en
Inventor
Peter Ahlmer
Marcel Thiebaut
Berthold Scholz
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.)
Berbel Ablufttechnik GmbH
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Berbel Ablufttechnik GmbH
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Publication of EP3045822A1 publication Critical patent/EP3045822A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGESĀ ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/20—Removing cooking fumes
    • F24C15/2078—Removing cooking fumes movable
    • F24C15/2085—Removing cooking fumes movable adjustable in height

Definitions

  • the invention relates to an extractor hood for the suction and discharge of exhaust air according to the preamble of claim 1.
  • extractor hoods In order to remove exhaust air and odors, especially from kitchens, extractor hoods are used, so that the resulting cooking fumes and the associated odors can be dissipated.
  • Such extractor hoods generally have a separator for separating solid and liquid components of the exhaust air and a fan for generating an air flow.
  • the deposition of the dirt particles can be effected by means of separation elements, such as, for example, washable grease filters or else by a suitable guidance of the air flow.
  • the separation device removes almost all the solid and liquid components contained in the exhaust air, such as grease droplets, dirt particles and condensed water, before the exhaust air enters the fan.
  • Such extractor hoods can be divided into two categories.
  • the exhaust air is led out of an exhaust outlet of the extractor hood via a pipe or hose line to the outside and thus removed from the room in which the hob and the extractor hood are located.
  • the exhaust air cleaned of liquid and solid particles but still contaminated with odors is usually released to the atmosphere outside the building.
  • the abovementioned separating device is provided in the exhaust hoods to keep all subsequently arranged exhaust ducts clean and the blower device functional. Likewise, however, the atmosphere outside the building should not be burdened with the dirt particles contained in the exhaust air. With this category of extractor hoods odor nuisance and dirt deposits in the cooking area and in the building as a whole can be avoided. However, the removal of warm air from a room leads to an increased energy demand, since the fresh air, which replaces the extracted exhaust air, must be reheated.
  • Such an exhaust hood is for example made of document CN 204 006 204 U known.
  • the exhaust air is returned to the room.
  • the exhaust air must also be cleaned of the adhering odors.
  • usually a carbon filter is provided, which must either be exchanged at certain intervals or regenerated.
  • the right time to swap or regenerate can easily be overlooked, so that then odors are not completely bound, but dismissed back into the kitchen.
  • the invention has the object of providing an extractor hood for sucking and discharging exhaust air according to the preamble of claim 1 in such a way that this disadvantage is avoided.
  • an extractor hood for suction and discharge of exhaust air with the features of claim 1.
  • a first lower device with the at least one exhaust air inlet, with a first blower and with a blow-off
  • a second upper device with at least one suction opening and with the at least one exhaust outlet on top of each other and by the provision of a second blower
  • the drawn from the first lower means exhaust air can be forwarded without fixed hose or channel to the second upper device and discharged from the outside.
  • the function for extracting the exhaust air and the function for discharging the exhaust air into the surrounding atmosphere are split into two devices, so to speak.
  • the device for deriving must be permanently installed locally.
  • the second fan may be part of the second upper device, but it may also be independently formed as an intermediate fan or exhaust fan in the outer wall or the fireplace wall.
  • advantages of a circulating air hood can be combined with the advantages of an exhaust air hood.
  • the exhaust air inlet can be located in its working position. In its working position, it is positioned so close to the exhaust air source that all exhaust air can really be collected and no exhaust air at the exhaust air inlet passes into the room. On the other hand, in its rest position, the exhaust air inlet can be brought into a position in which the view through the room and the aesthetic sensibility are not disturbed.
  • the blow-off opening of the first lower device is therefore advantageously designed as a nozzle.
  • the diameter of the outlet opening (blow-off opening) of the nozzle is smaller than the diameter of the inlet opening of the nozzle.
  • the ratio of the two diameters is about 4 to 5.
  • the edge of the nozzle may be shaped to give a tear-off edge. This shape prevents the ambient air surrounding the nozzle rim from being entrained by the exiting exhaust air and in this way the volume arriving at the second upper device is many times greater than the volume delivered by the first lower device.
  • the exhaust air jet can additionally be set in rotation.
  • corresponding guide elements can be provided on the inner wall of the nozzle.
  • the volume capacity of the second blower is advantageously designed to be greater than the volume capacity of the first blower. In this way it is ensured that all exhaust air is really detected and not a part of the edge area of the exhaust air jet passes into the room air and pollutes it with odors.
  • the first lower device is mounted height adjustable. As a result, the first lower device can be moved into a rest position, in which it does not interfere with the aesthetics of the room. On the other hand, it can also be put into a job position in which it can perform its task optimally. It is even possible to adjust the height in the working position according to the task. For example, if only water is heated, a relatively large distance between the exhaust air source and the exhaust air inlet is sufficient to fully absorb the slight upward rising water vapor. In contrast, z. B. when roasting a heavy, fat-laden steam generated, it may be useful to choose a working position in which the distance between the exhaust air source and the exhaust air inlet is lower.
  • a height adjustment of the first lower device may be carried out so that the adjustment must be made manually. Much more comfortable, however, the adjustment is carried out by motor.
  • the first lower device is suspended on at least one cable, wherein a motor is provided for driving at least one take-up device.
  • An adjustment over one or more ropes can be accommodated in a particularly space-saving manner, is cost-effective and has been used for other purposes for a very long time, so that only a minimal error rate can be expected.
  • the suction opening of the second upper device must be designed so that it can absorb the entire volume of the exhaust air jet. This could be achieved for example by a funnel-shaped component whose larger opening encloses the impact area of the exhaust air jet.
  • a relatively large overall depth would be necessary.
  • both a large opening and a large depth do not contribute to the increase in aesthetics.
  • An air-permeable cover By contrast, the opening would increase the flow resistance and cause additional costs.
  • the suction of the second upper device is therefore advantageously carried out in the form of a circumferential gap.
  • the gap encloses the impact area of the exhaust air jet and is open towards this.
  • the impinging exhaust air jet is thereby deflected outwards to the edge of the impact area and sucked.
  • an outwardly flowing fluid layer arises from the upwardly directed jet, which can be safely taken up via the gap and removed to the outside.
  • the displacement of the first lower means is limited by the second upper means. At rest, then both facilities would be directly above each other, arranged below the ceiling.
  • the first lower device is retractable into the second upper device. As a result, the height of the entire device in the rest position is smaller and less disturbing.
  • the second upper device can be designed so that it completely absorbs the first lower device in the rest position. In this case, only the second upper device and the lower end of the first lower device can be seen at rest. It would then even be possible to attach a flat closure, which can be moved to the side or folded down, for example. But even a partial reception of the first lower device in the second upper device can already reduce the height of the entire device at rest and contribute to a more attractive appearance.
  • the impact area of the exhaust air jet should be formed as a flat closed surface. Therefore, a cover is provided over the gap, which is guided in height displaceable. In this way, during operation of the device, the cover forms the closed surface above the gap at which the outwardly flowing fluid layer can form. However, the cover can be moved upwards so that the second upper device in the rest position can partially or completely accommodate the first lower device.
  • the cover could be provided with a drive that moves the cover to its two positions. But the cover is particularly advantageous by the first lower device movable. As a result, it is only moved without the need for a special control if the first lower device is also moved into its working position or into its rest position.
  • the cover may for example be guided by the cables, over which the first lower device is adjustable in height.
  • the second upper device is designed so that it can be lowered in a suspended ceiling. This means that the second upper device must at most appear with its edge. At rest, it is possible to hide the first lower device practically completely in the second upper device. As a result, only the lower boundary of the first lower device is visible in rest position, which can be additionally adapted to the decor of the ceiling.
  • the height of the inlet opening should be about 65 cm above the working surface of a kitchen. However, since the height of the work surface and the height of the room are always different, a fixed height adjustment of the first lower device from its rest to its working position is not possible.
  • the mobility of the first lower device must therefore be customizable to the local conditions. A working height of the first lower device is therefore presettable. This default can be made during assembly of the device.
  • the device can be put into operation with as little effort as possible.
  • Conventional extractor hoods in particular exhaust hoods are in a fixed position, so that only the fan must be started.
  • the first lower device In the case of the height-adjustable device, on the other hand, the first lower device must additionally be brought into position, in which handling below the device is not hindered, but in which the exhaust air from the exhaust air source is nevertheless safely extracted. Therefore, a control is provided which is designed such that, when the device is switched on, the first lower device moves from a rest position into a working position.
  • height adjustable exhaust hood has in particular two main components.
  • the actual extractor (first lower device) is provided with the designated by the arrows 10, designed as suction slots inlet openings.
  • the extractor 1 contains the extractor blower 3, which is indicated here only by dashed lines.
  • the upwardly directed exhaust nozzle 16 (see Fig. 5 ) is in the Figures 1 and 2 not visible.
  • the other main component is the exhaust air console 2 (second upper device). This is in particular provided with the exhaust air gap 11 and the exhaust outlet 6. Furthermore, the cover 8 is still provided.
  • An exhaust air duct 7 connects the exhaust air outlet of the exhaust air console 2 with the exhaust fan 4.
  • an external fan so a blower, which is not in the exhaust air console 2 but in the outer wall of the room used. In this way, the volume in the room itself can be reduced. Likewise, only a minimal amount of space is required for the exhaust air console. This is particularly important when installing the exhaust air console in a suspended ceiling.
  • the suspended ceiling is provided here with the reference numeral 14.
  • the extractor 1 is dimensioned so that it can be completely drawn into the exhaust air console 2.
  • the decorative panel 9 is placed on the underside of the extractor 1 in the fold 12 of the exhaust air console 2.
  • the underside of the decorative panel 9 is then in a plane with the suspended ceiling 14.
  • the decorative panel 9 can be adapted to the suspended ceiling 14, so that the extractor hood in their rest position barely can be recognized as such.
  • a frame strip 23 is attached, which covers the mounting gap between the ceiling 14 and the exhaust air console 2.
  • FIGS. 3 and 4 the connection between the cover 8 and the exhaust air console 2 is shown in detail.
  • the lower edge of the side walls of the exhaust air console 2 as shown in the figures, reshape. This results in a lower horizontal cover leg 24, a support fold 15 and an upper horizontal support leg 25.
  • the support fold 15 one or more openings are punched, which form the vertical exhaust air gap 11.
  • the cover 8 rests on the upper horizontal storage leg 25.
  • the vertical exhaust air gap 11 is still functional.
  • Fig. 5 shows the exhaust nozzle 16, which is integrated into the extractor 1.
  • the nozzle wall 19 forms a truncated cone.
  • the inner diameter is about 150 mm at the nozzle inlet opening 17 and about 110 mm at the nozzle outlet opening 18.
  • the height of the exhaust air nozzle 16 of about 50 mm results in an inclination of the lateral surface, which ensures an acceleration of the exhaust air when flowing through the exhaust air nozzle 16.
  • guide elements 20 are arranged, which are formed so that an approximately laminar exhaust air flow is formed.
  • the controller 26 sets an integrated into the extractor 1 winding device in motion, so that moves through the extension of the ropes 13 of the extractor 1 from its rest position in the exhaust air console 2 out down. At the same time, the cover 8 resting on the extractor 1 also moves downwards. As soon as the cover 8 has reached the upper horizontal storage leg 25 of the exhaust air console 2, it rests on these and does not continue to participate in the downward movement of the extractor 1.
  • the working position When installing the cooker hood you can preset a working position that is adapted to the height of the working area and the room height. Furthermore, the working position still depends on the type of cooker, as when using a gas stove usually a greater distance between the stove and extractor must be complied with, as when using an electric cooker. In the usual circumstances, the distance between the extractor and the exhaust air console is approximately between 50 and 70 cm.
  • the winding device stops and the extractor 1 remains in the reached position.
  • the electronic controller 26 turns on the extractor fan 3 and the exhaust fan 4.
  • the exhaust air over the stove is now sucked through the suction slots 10 in the extractor hood 1, freed in a separator not shown here of solid and liquid particles and pressed after passing through the extractor fan 3 in the exhaust nozzle 16. Due to the constriction of the flow cross section of the exhaust nozzle 16 between the nozzle inlet opening 17 and the nozzle outlet opening 18, the exhaust air is accelerated in the exhaust nozzle 16.
  • the exhaust fan 4 is therefore equipped with a higher volume capacity than the extractor blower 3.
  • the exhaust nozzle 16 may be provided at its nozzle outlet opening 18 with a tear-off edge not shown here.
  • the direction of the exhaust air flow 21 is indicated by the double arrows in Fig. 1 indicated.
  • a fluid layer is formed, which is withdrawn laterally over the vertical exhaust air gap 11.
  • the exhaust air is passed to the cover 8 over to the exhaust outlet 6. From there it enters the exhaust duct 7, which ends at the exhaust fan 4.
  • This exhaust fan 4 may be located in the outer wall or on the outside of the outer wall. In special cases, it can also be used in a chimney wall, so that the exhaust air is conveyed here via the fireplace to the outside.
  • the extractor blower 3 can be operated with different power levels. If the power level is changed, also the exhaust fan 4 switches to another power level.
  • the cooker hood is switched off, in particular via the remote control. As a result of the shutdown the extractor fan 3 and the exhaust fan 4 is stopped. Then, the winding device, not shown, is put into operation and the extractor 1 is pulled over the ropes 13 upwards.
  • the winding device is stopped only when, for example, a stop switch is actuated. But it is also possible to determine the achievement of the rest position without a mechanically moving switch.
  • a photoelectric sensor or a proximity sensor can be used.
  • the cover 8 In the rest position, the cover 8 is located just below the upper boundary of the exhaust air console 2 and rests on the extractor 1.
  • the decorative panel 9 is located in this position of the extractor 1 in the free space between the frame strips 23 and is applied to the lower horizontal cover legs 24 of the exhaust air console 2. From the extractor 2, therefore, only the two suction slots 10 are visible in the rest position.
  • the decorative panel 9 may be designed to be of the ceiling 14, which surrounds the exhaust air console 2, is practically indistinguishable. But it can also be deliberately designed so that it is a contrast to the ceiling 14.
  • the extractor 1 in the rest position within the ceiling 14 and hindered in any way the clear view through the room. Only when the cooker hood is to be operated, the extractor hood 1 is moved out of the ceiling and brought into working position. Despite these two different positions, the cooker hood can be operated as an exhaust hood, which removes all unpleasant odors from the room and conveys the exhaust air laden with the odors to the outside.
  • the exhaust air console 2 can only partially install in the ceiling.
  • the frame strips must be adapted accordingly and the protruding from the ceiling side panels should also be provided with decorative panels.
  • the exhaust air console must be installed directly below the ceiling.
  • the outer sides of the exhaust air console must be completely covered with decorative panels or even appropriately designed.
  • a lateral exhaust air outlet can be selected so that the exhaust duct can also run directly under the ceiling. But here, too, the extractor disappears in its rest position completely in the exhaust air console and gives the view through the room.
  • a not shown here carbon filter can be provided in the exhaust air console 2, but in particular in the extractor 1, a not shown here carbon filter can be provided. In this case, a non-illustrated diverter switch is still required, which leads the exhaust air either through the exhaust nozzle or through the carbon filter. Behind the carbon filter is located in the extractor 1 a - not shown here - alternative exhaust outlet.
  • the extractor hood can now be operated as an exhaust hood when the extractor switch is in a position in which the exhaust air of the exhaust nozzle 16 is supplied.
  • This mode of operation is particularly suitable for the warm season, in which the air flowing into the room, which replaces the outgoing exhaust air, is hardly colder than the room temperature.
  • the hood can also be operated as a recirculation hood, when the exhaust air is guided through the exhaust baffle through the carbon filter and discharged through the alternative exhaust outlet back to the room air.
  • recirculation mode no second fan is required, so that the exhaust fan 4 does not need to be put into operation. Since in this mode of operation no room air has to be replaced by outside air, no energy loss due to the heating of the outside air to room temperature is to be feared.

Description

Die Erfindung betrifft eine Dunstabzugshaube zum Absaugen und Ableiten von Abluft nach dem Oberbegriff von Anspruch 1.The invention relates to an extractor hood for the suction and discharge of exhaust air according to the preamble of claim 1.

Um Abluft und GerĆ¼che insbesondere aus KĆ¼chen zu entfernen, werden Dunstabzugshauben verwendet, so dass die entstehenden KochdĆ¼nste und die damit verbundenen GerĆ¼che abgefĆ¼hrt werden kƶnnen. Derartige Dunstabzugshauben weisen in der Regel eine Abscheideeinrichtung zur Abscheidung fester und flĆ¼ssiger Bestandteile der Abluft und ein GeblƤse zur Erzeugung eines Luftstroms auf. Die Abscheidung der Schmutzpartikel kann mittels Abscheidungselementen, wie beispielsweise auswaschbaren Fettfiltern oder aber durch eine geeignete FĆ¼hrung des Luftstroms erfolgen. Die Abscheideeinrichtung entfernt aus der Abluft nahezu alle enthaltenen festen und flĆ¼ssigen Bestandteile, wie Fetttrƶpfchen, Schmutzpartikel und auskondensiertes Wasser, bevor die Abluft in das GeblƤse eintritt. Solche Dunstabzugshauben kƶnnen in zwei Kategorien eingeteilt werden.In order to remove exhaust air and odors, especially from kitchens, extractor hoods are used, so that the resulting cooking fumes and the associated odors can be dissipated. Such extractor hoods generally have a separator for separating solid and liquid components of the exhaust air and a fan for generating an air flow. The deposition of the dirt particles can be effected by means of separation elements, such as, for example, washable grease filters or else by a suitable guidance of the air flow. The separation device removes almost all the solid and liquid components contained in the exhaust air, such as grease droplets, dirt particles and condensed water, before the exhaust air enters the fan. Such extractor hoods can be divided into two categories.

Bei den so genannten Ablufthauben wird die Abluft von einem Abluftauslass der Dunstabzugshaube Ć¼ber eine Rohr- oder Schlauchleitung nach auƟen gefĆ¼hrt und so dem Raum entzogen, in dem sich die Kochstelle und die Dunstabzugshaube befinden. Dabei wird die von flĆ¼ssigen und festen Partikeln gereinigte, aber noch mit GerĆ¼chen belastete Abluft Ć¼blicherweise an die AtmosphƤre auƟerhalb des GebƤudes abgegeben.In the case of so-called exhaust hoods, the exhaust air is led out of an exhaust outlet of the extractor hood via a pipe or hose line to the outside and thus removed from the room in which the hob and the extractor hood are located. In this case, the exhaust air cleaned of liquid and solid particles but still contaminated with odors is usually released to the atmosphere outside the building.

Die oben genannte Abscheideeinrichtung ist bei den Ablufthauben dazu vorgesehen, alle danach angeordneten AbluftfĆ¼hrungen sauber und die GeblƤseeinrichtung funktionsfƤhig zu halten. Ebenso soll aber die AtmosphƤre auƟerhalb des GebƤudes nicht mit den in der Abluft enthaltenen Schmutzpartikeln belastet werden. Mit dieser Kategorie von Dunstabzugshauben lassen sich GeruchsbelƤstigungen und Schmutzablagerungen im Kochraum und im GebƤude insgesamt vermeiden. Allerdings fĆ¼hrt das Abziehen von warmer Luft aus einem Raum zu einem erhƶhten Energiebedarf, da die Frischluft, die die abgezogene Abluft ersetzt, wieder aufgeheizt werden muss. Eine derartige Ablufthaube ist beispielsweise aus Dokument CN 204 006 204 U bekannt.The abovementioned separating device is provided in the exhaust hoods to keep all subsequently arranged exhaust ducts clean and the blower device functional. Likewise, however, the atmosphere outside the building should not be burdened with the dirt particles contained in the exhaust air. With this category of extractor hoods odor nuisance and dirt deposits in the cooking area and in the building as a whole can be avoided. However, the removal of warm air from a room leads to an increased energy demand, since the fresh air, which replaces the extracted exhaust air, must be reheated. Such an exhaust hood is for example made of document CN 204 006 204 U known.

Bei den Umlufthauben wird die Abluft dagegen dem Raum wieder zugefĆ¼hrt. Zu diesem Zweck mĆ¼ssen allerdings nicht nur Fetttrƶpfchen und feste Partikel entzogen werden, sondern die Abluft muss auch von den anhaftenden GerĆ¼chen gereinigt werden. Hierzu ist Ć¼blicherweise ein Kohlefilter vorgesehen, der entweder in bestimmten AbstƤnden getauscht oder aber regeneriert werden muss. Der richtige Zeitpunkt zum Tauschen oder Regenerieren kann jedoch leicht Ć¼bersehen werden, so dass dann GerĆ¼che nicht vollkommen gebunden, sondern wieder in die KĆ¼che entlassen werden.On the other hand, the exhaust air is returned to the room. For this purpose, not only fat droplets and solid particles must be extracted, but the exhaust air must also be cleaned of the adhering odors. For this purpose, usually a carbon filter is provided, which must either be exchanged at certain intervals or regenerated. Of the However, the right time to swap or regenerate can easily be overlooked, so that then odors are not completely bound, but dismissed back into the kitchen.

Neben diesem Nachteil gegenĆ¼ber den Ablufthauben haben Umlufthauben aber den Vorteil, dass sie unabhƤngig von lokalen Abluftinstallationen, wie beispielsweise fest verlegten Rohren sind, mit denen bei Ablufthauben die Abluft von der Dunstabzugshaube nach drauƟen gefĆ¼hrt wird. Es ist folglich lediglich ein flexibles Elektrokabel notwendig um eine Umlufthaube entsprechend mit der Hausinstallation verbinden zu kƶnnen. Dadurch ergibt sich z. B. der Vorteil, dass eine Umlufthaube eine Arbeits- und eine Ruhestellung einnehmen kann. Da in einer modernen KĆ¼che die ArbeitsgerƤte - wenn sie gerade nicht in Gebrauch sind - mƶglichst unauffƤllig sein sollen, kann die Ruhestellung so gewƤhlt werden, dass die Dunstabzugshaube den Blick durch die KĆ¼che nicht stƶrt. Dies ist mit Ablufthauben bisher nicht mƶglich. Eine derartige Umlufthaube ist beispielsweise aus Dokument EP 2 327 936 A1 bekannt.In addition to this disadvantage compared to the exhaust hoods Umlufthauben but have the advantage that they are independent of local exhaust installations, such as permanently installed pipes with which exhaust air ducts the exhaust air from the hood is led to the outside. It is therefore only a flexible electrical cable necessary to be able to connect a recirculation hood accordingly with the house installation. This results z. B. the advantage that a recirculation hood can occupy a working and a rest position. Since in a modern kitchen the implements - if they are not in use - should be as inconspicuous as possible, the rest position can be chosen so that the hood does not disturb the view through the kitchen. This is not possible with exhaust hoods. Such a circulating air hood is for example made of document EP 2 327 936 A1 known.

Der Erfindung liegt die Aufgabe zugrunde, eine Dunstabzugshaube zum Absaugen und Ableiten von Abluft nach dem Oberbegriff von Anspruch 1 so auszubilden, dass dieser Nachteil vermieden wird.The invention has the object of providing an extractor hood for sucking and discharging exhaust air according to the preamble of claim 1 in such a way that this disadvantage is avoided.

Gelƶst wird die Aufgabe gemƤƟ der Erfindung durch eine Dunstabzugshaube zum Absaugen und Ableiten von Abluft mit den Merkmalen von Anspruch 1. Durch die Anordnung einer ersten unteren Einrichtung mit dem wenigstens einen Ablufteinlass, mit einem ersten GeblƤse und mit einer Abblasƶffnung, einer zweiten oberen Einrichtung mit wenigstens einer Einsaugƶffnung und mit dem wenigstens einen Abluftauslass Ć¼bereinander und durch das Vorsehen eines zweiten GeblƤses, kann die von der ersten untere Einrichtung angesaugte Abluft ohne festen Schlauch oder Kanal an die zweite obere Einrichtung weitergeleitet und von dieser nach auƟen abgegeben werden.The object is achieved according to the invention by an extractor hood for suction and discharge of exhaust air with the features of claim 1. By the arrangement of a first lower device with the at least one exhaust air inlet, with a first blower and with a blow-off, a second upper device with at least one suction opening and with the at least one exhaust outlet on top of each other and by the provision of a second blower, the drawn from the first lower means exhaust air can be forwarded without fixed hose or channel to the second upper device and discharged from the outside.

Bei der erfindungsgemƤƟen Vorrichtung werden gewissermaƟen die Funktion zum Absaugen der Abluft und die Funktion zum Ableiten der Abluft in die umgebende AtmosphƤre auf zwei Einrichtungen aufgeteilt. Dabei muss nur die Einrichtung zum Ableiten lokal fest installiert sein. Das zweite GeblƤse kann Teil der zweiten oberen Einrichtung sein, es kann aber auch unabhƤngig davon als ZwischengeblƤse oder als AbzugsgeblƤse in der AuƟenmauer oder der Kaminmauer ausgebildet sein.In the device according to the invention, the function for extracting the exhaust air and the function for discharging the exhaust air into the surrounding atmosphere are split into two devices, so to speak. In this case, only the device for deriving must be permanently installed locally. The second fan may be part of the second upper device, but it may also be independently formed as an intermediate fan or exhaust fan in the outer wall or the fireplace wall.

Durch die erfindungsgemƤƟe Vorrichtung lassen sich Vorteile einer Umlufthaube mit den Vorteilen einer Ablufthaube kombinieren. Insbesondere sind hier die unterschiedlichen Stellungen zu nennen, in der sich der Ablufteinlass befinden kann. In seiner Arbeitsstellung ist er so nahe an der Abluftquelle angeordnet, dass auch wirklich alle Abluft aufgefangen werden kann und keine Abluft an dem Ablufteinlass vorbei in den Raum strƶmt. In seiner Ruhestellung dagegen kann der Ablufteinlass in eine Position gebracht werden, in der die Sicht durch den Raum und das Ƥsthetische Empfinden nicht gestƶrt werden.By means of the device according to the invention, advantages of a circulating air hood can be combined with the advantages of an exhaust air hood. In particular, here are the different positions to call, in which the exhaust air inlet can be located. In its working position, it is positioned so close to the exhaust air source that all exhaust air can really be collected and no exhaust air at the exhaust air inlet passes into the room. On the other hand, in its rest position, the exhaust air inlet can be brought into a position in which the view through the room and the aesthetic sensibility are not disturbed.

Bisher wurde davon ausgegangen, dass die Vorteile von zwei unterschiedlichen Stellungen bei einer Ablufthaube nur durch ein Teleskoprohr oder einen Balg zwischen dem Ablufteinlass und dem fest installierten Abluftauslass zu verwirklichen wƤre. Beide Varianten wirken jedoch nicht sehr Ƥsthetisch und sind auƟerdem sehr stƶranfƤllig, da sich die Teile leicht gegeneinander verklemmen kƶnnen. Bei der erfindungsgemƤƟen Vorrichtung entfallen dagegen solche unƤsthetischen und stƶranfƤlligen Teile. Die Abluft wird hier ohne Rohr oder Schlauch von der Abblasƶffnung der ersten unteren Einrichtung durch die Raumluft zu der Einsaugƶffnung der zweiten oberen Einrichtung gefĆ¼hrt.Previously, it was assumed that the advantages of two different positions in an exhaust hood would be realized only by a telescopic tube or a bellows between the exhaust air inlet and the fixed exhaust air outlet. However, both variants are not very aesthetic and are also very susceptible to interference, since the parts can easily jam against each other. In the apparatus according to the invention, however, accounts for such unaesthetic and trouble-prone parts. The exhaust air is guided here without pipe or hose from the discharge opening of the first lower device through the room air to the intake opening of the second upper device.

Weitere Einzelheiten und Vorteile der Erfindung ergeben sich aus den UnteransprĆ¼chen.Further details and advantages of the invention will become apparent from the dependent claims.

Damit das Volumen der von der Abblasƶffnung abgegebenen Abluft vollstƤndige Ć¼ber die Einsaugƶffnung in die zweite obere Einrichtung aufgenommen werden kann, muss von der Abblasƶffnung ein mƶglichst gerichteter Abluftstrahl erzeugt werden. Die Abblasƶffnung der ersten unteren Einrichtung ist deshalb vorteilhaft als DĆ¼se ausgebildet. Der Durchmesser der Austrittsƶffnung (Abblasƶffnung) der DĆ¼se ist dabei kleiner dimensioniert als der Durchmesser der Eintrittsƶffnung der DĆ¼se. Das VerhƤltnis der beiden Durchmesser zueinander betrƤgt etwa 4 zu 5.In order that the volume of the exhaust air discharged from the blow-off opening can be completely absorbed via the intake opening into the second upper device, the most direct possible exhaust air jet must be generated by the blow-off opening. The blow-off opening of the first lower device is therefore advantageously designed as a nozzle. The diameter of the outlet opening (blow-off opening) of the nozzle is smaller than the diameter of the inlet opening of the nozzle. The ratio of the two diameters is about 4 to 5.

Mit der DĆ¼se soll eine Strƶmung erzeugt werden, die Ć¼ber eine grĆ¶ĆŸere Strecke laminar bleibt. Der Rand der DĆ¼se kann so geformt sein, dass sich eine Abrisskante ergibt. Diese Form verhindert, dass die den DĆ¼senrand umgebende Raumluft durch die austretende Abluft mitgerissen wird und auf diese Weise das an der zweiten oberen Einrichtung ankommende Volumen um ein Vielfaches grĆ¶ĆŸer als das von der ersten unteren Einrichtung abgegebene Volumen ist. Um den gerichteten Abluftstrahl weiter zu stabilisieren und eine Vermischung mit der umgebenden Raumluft mƶglichst gering zu halten, kann der Abluftstrahl zusƤtzlich in Rotation versetzt werden. Hierzu kƶnnen an der Innenwand der DĆ¼se entsprechende Leitelemente vorgesehen werden.With the nozzle, a flow is to be generated, which remains laminar over a longer distance. The edge of the nozzle may be shaped to give a tear-off edge. This shape prevents the ambient air surrounding the nozzle rim from being entrained by the exiting exhaust air and in this way the volume arriving at the second upper device is many times greater than the volume delivered by the first lower device. In order to further stabilize the directional exhaust air jet and to minimize the mixing with the ambient air, the exhaust air jet can additionally be set in rotation. For this purpose, corresponding guide elements can be provided on the inner wall of the nozzle.

Auch durch eine Abrisskante lƤsst es sich nicht vollstƤndig vermeiden, dass durch den aus der DĆ¼se austretenden Abluftstrahl Raumluft mitgerissen wird. An der zweiten oberen Einrichtung wird daher immer ein grĆ¶ĆŸeres Volumen anstehen als das von der ersten unteren Einrichtung abgegebene Volumen an Abluft. Da sich die Abluft, die vor der Einsaugƶffnung in den ƤuƟeren Randschichten des Strahls mit Raumluft vermischt ist, sich nicht von dieser abtrennen lƤsst, ist die Volumenleistung des zweiten GeblƤses vorteilhaft grĆ¶ĆŸer als die Volumenleistung des ersten GeblƤses ausgelegt. Auf diese Weise wird sichergestellt, dass wirklich alle Abluft erfasst wird und nicht ein Teil aus dem Randbereich des Abluftstrahls in die Raumluft Ć¼bergeht und diese mit GerĆ¼chen belastet.Even with a spoiler lip, it can not be completely avoided that room air is entrained by the exhaust air jet emerging from the nozzle. Therefore, a larger volume will always be present at the second upper device than the volume of exhaust air emitted by the first lower device. As the exhaust air, in front of the suction opening in the outer surface layers of the Beam is mixed with room air, can not be separated from this, the volume capacity of the second blower is advantageously designed to be greater than the volume capacity of the first blower. In this way it is ensured that all exhaust air is really detected and not a part of the edge area of the exhaust air jet passes into the room air and pollutes it with odors.

Die erste untere Einrichtung ist hƶhenverstellbar montiert. Dadurch kann die erste untere Einrichtung in eine Ruhestellung verfahren werden, in der sie sich nicht stƶrend auf die Ƅsthetik des Raums auswirkt. Andererseits kann sie aber auch in eine Arbeitsstellung verfahren werden, in der sie ihre Aufgabe optimal wahrnehmen kann. Es ist sogar mƶglich, die Hƶhe in der Arbeitsstellung entsprechend der Aufgabe einzustellen. Wird beispielsweise nur Wasser erhitzt ist ein relativ groƟer Abstand zwischen der Abluftquelle und dem Ablufteinlass ausreichend, um den leichten nach oben steigenden Wasserdampf vollstƤndig aufnehmen zu kƶnnen. Wird dagegen z. B. beim Braten ein schwerer, Fett beladener Dampf erzeugt, kann es sinnvoll sein, eine Arbeitsstellung zu wƤhlen, bei der der Abstand zwischen Abluftquelle und Ablufteinlass geringer ist.The first lower device is mounted height adjustable. As a result, the first lower device can be moved into a rest position, in which it does not interfere with the aesthetics of the room. On the other hand, it can also be put into a job position in which it can perform its task optimally. It is even possible to adjust the height in the working position according to the task. For example, if only water is heated, a relatively large distance between the exhaust air source and the exhaust air inlet is sufficient to fully absorb the slight upward rising water vapor. In contrast, z. B. when roasting a heavy, fat-laden steam generated, it may be useful to choose a working position in which the distance between the exhaust air source and the exhaust air inlet is lower.

Auch bei diesen verschiedenen Arbeitsstellungen kann die Abluft vollstƤndig nach auƟen transportiert werden. Es wird auf diese Weise erstmals auch eine echte Ablufthaube mit verschiedenen Arbeitsstellungen mƶglich.Even with these different working positions, the exhaust air can be completely transported to the outside. It is possible in this way for the first time a real exhaust hood with different working positions.

Eine Hƶhenverstellung der ersten unteren Einrichtung kann so ausgefĆ¼hrt sein, dass die Verstellung manuell vorgenommen werden muss. Wesentlich komfortabler wird die Verstellung jedoch motorisch durchgefĆ¼hrt. Die erste untere Einrichtung ist hierzu an wenigstens einem Seil aufgehƤngt wobei ein Motor zum Antreiben wenigstens einer Aufwickeleinrichtung vorgesehen ist. Eine Verstellung Ć¼ber ein oder mehrere Seile kann besonders platzsparend untergebracht werden, ist kostengĆ¼nstig und fĆ¼r andere Zwecke seit sehr langer Zeit im Einsatz, so dass nur mit einer minimalen Fehlerquote zu rechnen ist.A height adjustment of the first lower device may be carried out so that the adjustment must be made manually. Much more comfortable, however, the adjustment is carried out by motor. For this purpose, the first lower device is suspended on at least one cable, wherein a motor is provided for driving at least one take-up device. An adjustment over one or more ropes can be accommodated in a particularly space-saving manner, is cost-effective and has been used for other purposes for a very long time, so that only a minimal error rate can be expected.

Die Einsaugƶffnung der zweiten oberen Einrichtung muss so ausgestaltet sein, dass sie das gesamte Volumen des Abluftstrahls aufnehmen kann. Dies kƶnnte beispielsweise durch ein trichterfƶrmiges Bauteil erreicht werden, dessen grĆ¶ĆŸere Ɩffnung den Auftreffbereich des Abluftstrahls umschlieƟt. Um hier jedoch StrƶmungsverhƤltnisse zu realisieren, die tatsƤchlich die Aufnahme der gesamten Abluft gewƤhrleisten, wƤre eine relativ groƟe Bautiefe notwendig. Sowohl eine groƟe Ɩffnung als auch eine groƟe Bautiefe tragen aber nicht zur Steigerung der Ƅsthetik bei. Eine luftdurchlƤssige Abdeckung der Ɩffnung wĆ¼rde dagegen den Strƶmungswiderstand erhƶhen und zusƤtzliche Kosten verursachen.The suction opening of the second upper device must be designed so that it can absorb the entire volume of the exhaust air jet. This could be achieved for example by a funnel-shaped component whose larger opening encloses the impact area of the exhaust air jet. However, in order to realize flow conditions that actually ensure the absorption of the entire exhaust air, a relatively large overall depth would be necessary. However, both a large opening and a large depth do not contribute to the increase in aesthetics. An air-permeable cover By contrast, the opening would increase the flow resistance and cause additional costs.

Die Einsaugƶffnung der zweiten oberen Einrichtung ist deshalb vorteilhaft in Form eines umlaufenden Spalts ausgefĆ¼hrt. Der Spalt umschlieƟt den Auftreffbereich des Abluftstrahls und ist zu diesem hin geƶffnet. Der auftreffende Abluftstrahl wird dadurch nach auƟen zum Rand des Auftreffbereichs hin umgelenkt und abgesaugt. Dabei entsteht aus dem nach oben gerichteten Strahl eine nach auƟen strƶmende Fluidschicht, die sicher Ć¼ber den Spalt aufgenommen und nach auƟen abgefĆ¼hrt werden kann.The suction of the second upper device is therefore advantageously carried out in the form of a circumferential gap. The gap encloses the impact area of the exhaust air jet and is open towards this. The impinging exhaust air jet is thereby deflected outwards to the edge of the impact area and sucked. In this case, an outwardly flowing fluid layer arises from the upwardly directed jet, which can be safely taken up via the gap and removed to the outside.

In der Ruhestellung der ersten unteren Einrichtung, soll diese soweit wie mƶglich nach oben verschoben werden, damit die Sicht durch den Raum nicht unnƶtig behindert wird. Der Verschiebeweg der ersten unteren Einrichtung wird jedoch durch die zweite obere Einrichtung begrenzt. In Ruhestellung wƤren dann beide Einrichtungen direkt Ć¼bereinander, unterhalb der Decke angeordnet. Die erste untere Einrichtung ist in die zweite obere Einrichtung einfahrbar. Dadurch wird die Hƶhe der gesamten Vorrichtung in Ruhestellung kleiner und weniger stƶrend. Die zweite obere Einrichtung kann dabei so ausgebildet sein, dass sie die erste untere Einrichtung in Ruhestellung vollkommen aufnimmt. In diesem Fall ist in Ruhestellung nur die zweite obere Einrichtung und der untere Abschluss der ersten unteren Einrichtung zu sehen. Es wƤre dann sogar denkbar einen flƤchigen Verschluss anzubringen, der beispielsweise zur Seite verfahren oder abgeklappt werden kann. Aber auch eine nur teilweise Aufnahme der ersten unteren Einrichtung in der zweiten oberen Einrichtung kann die Bauhƶhe der gesamten Vorrichtung in Ruhestellung bereits reduzieren und zu einem ansehnlicheren Erscheinungsbild beitragen.In the rest position of the first lower device, this should be moved as far as possible upwards so that the view through the room is not unnecessarily obstructed. However, the displacement of the first lower means is limited by the second upper means. At rest, then both facilities would be directly above each other, arranged below the ceiling. The first lower device is retractable into the second upper device. As a result, the height of the entire device in the rest position is smaller and less disturbing. The second upper device can be designed so that it completely absorbs the first lower device in the rest position. In this case, only the second upper device and the lower end of the first lower device can be seen at rest. It would then even be possible to attach a flat closure, which can be moved to the side or folded down, for example. But even a partial reception of the first lower device in the second upper device can already reduce the height of the entire device at rest and contribute to a more attractive appearance.

Der Auftreffbereich des Abluftstrahls soll als ebene geschlossene FlƤche ausgebildet sein. Ɯber dem Spalt ist deshalb eine Abdeckung vorgesehen, die in der Hƶhe verschiebbar gefĆ¼hrt ist. Auf diese Weise bildet die Abdeckung wƤhrend des Betriebs der Vorrichtung die geschlossene FlƤche oberhalb des Spalts, an der sich die nach auƟen strƶmende Fluidschicht bilden kann. Die Abdeckung kann jedoch nach oben verfahren werden, damit die zweite obere Einrichtung in der Ruhestellung die erste untere Einrichtung teilweise oder vollstƤndig aufnehmen kann.The impact area of the exhaust air jet should be formed as a flat closed surface. Therefore, a cover is provided over the gap, which is guided in height displaceable. In this way, during operation of the device, the cover forms the closed surface above the gap at which the outwardly flowing fluid layer can form. However, the cover can be moved upwards so that the second upper device in the rest position can partially or completely accommodate the first lower device.

Die Abdeckung kƶnnte mit einem Antrieb versehen werden, der die Abdeckung in ihre zwei Positionen bewegt. Besonders vorteilhaft ist die Abdeckung aber durch die erste untere Einrichtung bewegbar. Dadurch wird sie - ohne dass eine spezielle Steuerung erforderlich wƤre - nur dann bewegt, wenn auch die erste untere Einrichtung in ihre Arbeitsstellung, bzw. in ihre Ruhestellung bewegt wird. Die Abdeckung kann beispielsweise durch die Seile gefĆ¼hrt sein, Ć¼ber die die erste untere Einrichtung in ihrer Hƶhe verstellbar ist.The cover could be provided with a drive that moves the cover to its two positions. But the cover is particularly advantageous by the first lower device movable. As a result, it is only moved without the need for a special control if the first lower device is also moved into its working position or into its rest position. The cover may for example be guided by the cables, over which the first lower device is adjustable in height.

Es wƤre vorteilhaft, wenn die Vorrichtung in Ruhestellung fast unsichtbar wƤre und das Aussehen des Raums nicht negativ beeinflussen wĆ¼rde. Zu diesem Zweck ist die zweite obere Einrichtung so ausgebildet, dass sie in einer abgehƤngten Decke versenkbar ist. Da bedeutet, dass die zweite obere Einrichtung hƶchstens mit ihrem Rand in Erscheinung treten muss. In Ruhestellung wird es mƶglich, die erste untere Einrichtung praktisch vollkommen in der zweiten oberen Einrichtung zu verbergen. Dadurch ist in Ruhestellung dann nur noch die untere Begrenzung der ersten unteren Einrichtung sichtbar, die zusƤtzlich an das Dekor der Decke angepasst werden kann.It would be advantageous if the device were almost invisible at rest and would not adversely affect the appearance of the room. For this purpose, the second upper device is designed so that it can be lowered in a suspended ceiling. This means that the second upper device must at most appear with its edge. At rest, it is possible to hide the first lower device practically completely in the second upper device. As a result, only the lower boundary of the first lower device is visible in rest position, which can be additionally adapted to the decor of the ceiling.

Die Hƶhe der Einlassƶffnung soll ca. 65 cm Ć¼ber der ArbeitsflƤche einer KĆ¼che liegen. Da aber die Hƶhe der ArbeitsflƤche und die Raumhƶhe immer unterschiedlich sind, ist eine feste Hƶhenverstellung der ersten unteren Einrichtung von ihrer Ruhe- in ihre Arbeitsstellung nicht mƶglich. Die Verfahrbarkeit der ersten unteren Einrichtung muss also individuell an die ƶrtlichen Gegebenheiten anpassbar sein. Eine Arbeitshƶhe der ersten unteren Einrichtung ist deshalb voreinstellbar. Diese Voreinstellung kann bei der Montage der Vorrichtung vorgenommen werden.The height of the inlet opening should be about 65 cm above the working surface of a kitchen. However, since the height of the work surface and the height of the room are always different, a fixed height adjustment of the first lower device from its rest to its working position is not possible. The mobility of the first lower device must therefore be customizable to the local conditions. A working height of the first lower device is therefore presettable. This default can be made during assembly of the device.

Es ist erstrebenswert, dass die Vorrichtung mit mƶglichst geringem Aufwand in Betrieb gesetzt werden kann. Ɯbliche Dunstabzugshauben, insbesondere Ablufthauben, befinden sich in einer festen Position, so dass nur das GeblƤse gestartet werden muss. Bei der hƶhenverstellbaren Vorrichtung dagegen, muss zusƤtzlich die erste untere Einrichtung in Position gebracht werden, in der ein Hantieren unterhalb der Einrichtung nicht behindert wird, in der die Abluft der Abluftquelle aber trotzdem sicher abgesaugt wird. Es ist deshalb eine Steuerung vorgesehen, die so ausgebildet ist, dass beim Einschalten der Vorrichtung die erste untere Einrichtung aus einer Ruhestellung in eine Arbeitsstellung verfƤhrt.It is desirable that the device can be put into operation with as little effort as possible. Conventional extractor hoods, in particular exhaust hoods are in a fixed position, so that only the fan must be started. In the case of the height-adjustable device, on the other hand, the first lower device must additionally be brought into position, in which handling below the device is not hindered, but in which the exhaust air from the exhaust air source is nevertheless safely extracted. Therefore, a control is provided which is designed such that, when the device is switched on, the first lower device moves from a rest position into a working position.

Weitere Einzelheiten und Vorteile der Erfindung ergeben sich aus der Beschreibung eines AusfĆ¼hrungsbeispiels, das anhand der Zeichnung eingehend erlƤutert wird.Further details and advantages of the invention will become apparent from the description of an embodiment which is explained in detail with reference to the drawing.

Es zeigt:

Fig. 1
eine schematische Darstellung eines bevorzugten AusfĆ¼hrungsbeispiels der erfindungsgemƤƟen Vorrichtung in Arbeitsstellung,
Fig. 2
die Vorrichtung aus Fig. 1 in Ruhestellung,
Fig. 3
ein Detail der Vorrichtung aus Fig. 1 in Arbeitsstellung,
Fig. 4
das Detail aus Fig. 3 in Ruhestellung der Vorrichtung und
Fig. 5
die AbluftdĆ¼se der Vorrichtung aus den Figuren 1 und 2.
It shows:
Fig. 1
a schematic representation of a preferred embodiment of the device according to the invention in working position,
Fig. 2
the device off Fig. 1 at rest,
Fig. 3
a detail of the device Fig. 1 in working position,
Fig. 4
the detail Fig. 3 at rest of the device and
Fig. 5
the exhaust nozzle of the device from the Figures 1 and 2 ,

Die in Fig. 1 dargestellte hƶhenverstellbare Ablufthaube weist insbesondere zwei Hauptbestandteile auf. Der eigentliche Dunstabzug (erste untere Einrichtung) ist mit den durch die Pfeile 10 bezeichneten, als Absaugschlitze ausgebildeten Einlassƶffnungen versehen. Auch enthƤlt der Dunstabzug 1 das DunstabzugsgeblƤse 3, welches hier nur Ć¼ber gestrichelte Linien angedeutet ist. Die nach oben gerichtete AbluftdĆ¼se 16 (siehe Fig. 5) ist in den Figuren 1 und 2 nicht sichtbar.In the Fig. 1 shown height adjustable exhaust hood has in particular two main components. The actual extractor (first lower device) is provided with the designated by the arrows 10, designed as suction slots inlet openings. Also, the extractor 1 contains the extractor blower 3, which is indicated here only by dashed lines. The upwardly directed exhaust nozzle 16 (see Fig. 5 ) is in the Figures 1 and 2 not visible.

Den anderen Hauptbestandteil bildet die Abluftkonsole 2 (zweite obere Einrichtung). Diese ist insbesondere mit dem Abluftspalt 11 und dem Abluftauslass 6 versehen. Weiterhin ist noch die Abdeckung 8 vorgesehen.The other main component is the exhaust air console 2 (second upper device). This is in particular provided with the exhaust air gap 11 and the exhaust outlet 6. Furthermore, the cover 8 is still provided.

Ein Abluftkanal 7 verbindet den Abluftauslass der Abluftkonsole 2 mit dem AbluftgeblƤse 4. Bei dem gezeigten AusfĆ¼hrungsbeispiel wurde ein externes GeblƤse, also ein GeblƤse, das sich nicht in der Abluftkonsole 2 sondern in der AuƟenmauer des Raumes befindet, verwendet. Auf diese Weise kann die LautstƤrke in dem Raum selbst reduziert werden. Ebenso ist fĆ¼r die Abluftkonsole so nur ein minimaler Platzbedarf nƶtig. Dies ist insbesondere beim Einbau der Abluftkonsole in eine abgehƤngte Decke wichtig. Die abgehƤngte Decke ist hier mit dem Bezugszeichen 14 versehen.An exhaust air duct 7 connects the exhaust air outlet of the exhaust air console 2 with the exhaust fan 4. In the illustrated embodiment, an external fan, so a blower, which is not in the exhaust air console 2 but in the outer wall of the room used. In this way, the volume in the room itself can be reduced. Likewise, only a minimal amount of space is required for the exhaust air console. This is particularly important when installing the exhaust air console in a suspended ceiling. The suspended ceiling is provided here with the reference numeral 14.

Die Verbindung zwischen Dunstabzug 1 und Abluftkonsole 2ist in dem gezeigten AusfĆ¼hrungsbeispiel Ć¼ber Seile 13 realisiert. Es ist unerheblich, ob mehrere Seile vorgesehen sind, die Ć¼ber eine oder mehrere Wickeleinrichtungen aufgewickelt werden, oder ob nur ein einziges Seil Ć¼ber entsprechende Umlenkrollen gefĆ¼hrt wird.The connection between extractor hood 1 and exhaust air console 2 is realized in the embodiment shown via ropes 13. It is irrelevant whether several ropes are provided, which are wound up via one or more winding devices, or whether only a single rope is guided over corresponding pulleys.

Der Dunstabzug 1 ist so dimensioniert, dass er vollkommen in die Abluftkonsole 2 hineingezogen werden kann. In der vollkommen eingezogenen Ruhestellung (siehe Fig. 2) legt sich das Dekorpanel 9 an der Unterseite des Dunstabzugs 1 in den Falz 12 der Abluftkonsole 2. Die Unterseite des Dekorpanels 9 liegt dann in einer Ebene mit der abgehƤngten Decke 14. Das Dekorpanel 9 kann an die abgehƤngte Decke 14 angepasst werden, so dass die Dunstabzugshaube in ihrer Ruhestellung kaum noch als solche zu erkennen ist. An der AuƟenwand der Abluftkonsole 2 ist eine Rahmenleiste 23 angebracht, die den Montagespalt zwischen Decke 14 und der Abluftkonsole 2 Ć¼berdeckt.The extractor 1 is dimensioned so that it can be completely drawn into the exhaust air console 2. In the fully retracted rest position (see Fig. 2 The decorative panel 9 is placed on the underside of the extractor 1 in the fold 12 of the exhaust air console 2. The underside of the decorative panel 9 is then in a plane with the suspended ceiling 14. The decorative panel 9 can be adapted to the suspended ceiling 14, so that the extractor hood in their rest position barely can be recognized as such. On the outer wall of the exhaust air console 2, a frame strip 23 is attached, which covers the mounting gap between the ceiling 14 and the exhaust air console 2.

In den Figuren 3 und 4 ist die Verbindung zwischen der Abdeckung 8 und der Abluftkonsole 2 detailliert gezeigt. Bei der Verwendung von Stahlblech, insbesondere von Edelstahlblech, lƤsst sich der untere Rand der SeitenwƤnde der Abluftkonsole 2, wie in den Figuren gezeigt, umformen. Es entsteht so ein unterer horizontaler Abdeckschenkel 24, ein StĆ¼tzfalz 15 und ein oberer horizontaler Ablageschenkel 25. In den StĆ¼tzfalz 15 sind eine oder mehrere Ɩffnungen gestanzt, die den vertikalen Abluftspalt 11 bilden. In Arbeitsstellung (siehe Fig. 3) liegt die Abdeckung 8 auf dem oberen horizontalen Ablageschenkel 25 auf. Dadurch ist die Sicht in das Innere der Abluftkonsole 2 nicht mƶglich und es ergibt sich fĆ¼r den Betrachter eine geschlossene Decke, die im Bereich der Abluftkonsole 2 lediglich eine geringfĆ¼gige Vertiefung aufweist. Der vertikale Abluftspalt 11 ist trotzdem funktionsfƤhig.In the FIGS. 3 and 4 the connection between the cover 8 and the exhaust air console 2 is shown in detail. When using sheet steel, in particular stainless steel sheet, the lower edge of the side walls of the exhaust air console 2, as shown in the figures, reshape. This results in a lower horizontal cover leg 24, a support fold 15 and an upper horizontal support leg 25. In the support fold 15, one or more openings are punched, which form the vertical exhaust air gap 11. In working position (see Fig. 3 ), the cover 8 rests on the upper horizontal storage leg 25. As a result, the view into the interior of the exhaust air console 2 is not possible and it results for the viewer a closed ceiling, which has only a slight depression in the area of the exhaust air console 2. The vertical exhaust air gap 11 is still functional.

Wird der Dunstabzug 1 in seine Ruhestellung (siehe Fig. 4) verfahren, taucht er vollkommen in die Abluftkonsole 2 ein. Dabei wird von der Oberseite des Dunstabzugs 1 die Abdeckung 8 angehoben und nach oben geschoben (siehe Fig. 2). Das Dekorpanel 9 sitzt in dieser Stellung passgenau in dem Aufnahmefalz 12. In dieser Ruhestellung ist in der Decke 14 nur die Rahmenleiste 23 und das Dekorpanel 9 zu sehen. Der Dunstabzug 1 ist vollkommen in der in die Decke 14 eingelassenen Abluftkonsole 2 verschwunden.If the extractor 1 in its rest position (see Fig. 4 ), he dives completely into the exhaust air console 2. In this case, the cover 8 is lifted from the top of the extractor 1 and pushed upwards (see Fig. 2 ). In this position of rest, only the frame strip 23 and the decorative panel 9 can be seen in the ceiling 14 in this position of rest. The extractor 1 is completely gone in the recessed in the ceiling 14 exhaust air console 2.

Fig. 5 zeigt die AbluftdĆ¼se 16, die in den Dunstabzug 1 integriert ist. Die DĆ¼senwand 19 bildet einen Kegelstumpf. Der Innendurchmesser betrƤgt an der DĆ¼seneintrittsƶffnung 17 etwa 150 mm und an der DĆ¼senaustrittsƶffnung 18 etwa 110 mm. Durch die Hƶhe der AbluftdĆ¼se 16 von ca. 50 mm ergibt sich eine Neigung der MantelflƤche, die fĆ¼r eine Beschleunigung der Abluft beim Durchstrƶmen der AbluftdĆ¼se 16 sorgt. Im Inneren der AbluftdĆ¼se 16 sind Leitelemente 20 angeordnet, die so ausgeformt sind, dass ein annƤhernd laminarer Abluftstrom entsteht. Fig. 5 shows the exhaust nozzle 16, which is integrated into the extractor 1. The nozzle wall 19 forms a truncated cone. The inner diameter is about 150 mm at the nozzle inlet opening 17 and about 110 mm at the nozzle outlet opening 18. The height of the exhaust air nozzle 16 of about 50 mm results in an inclination of the lateral surface, which ensures an acceleration of the exhaust air when flowing through the exhaust air nozzle 16. In the interior of the exhaust nozzle 16 guide elements 20 are arranged, which are formed so that an approximately laminar exhaust air flow is formed.

Im Folgenden soll die Funktion der Dunstabzugshaube naher erlƤutert werden. Soll die Dunstabzugshaube in Betrieb genommen werden, wird vorteilhaft eine Fernsteuerung verwendet. Durch das BetƤtigen eines entsprechenden Schaltknopfs der Fernsteuerung wird eine in den Figuren 1 und 2 gestrichelt eingezeichnete elektronische Steuerung 26 aktiviert. Die Verbindung kann Ć¼ber Sender und EmpfƤnger erfolgen.In the following, the function of the extractor hood will be explained in more detail. If the hood is put into operation, a remote control is advantageously used. By pressing a corresponding button of the remote control is in the Figures 1 and 2 Dashed electronic control 26 activated. The connection can be made via transmitter and receiver.

Die Steuerung 26 setzt eine in den Dunstabzug 1 integrierte Wickeleinrichtung in Gang, so dass sich durch die VerlƤngerung der Seile 13 der Dunstabzug 1 aus seiner Ruhestellung in der Abluftkonsole 2 heraus nach unten bewegt. Dabei bewegt sich ebenfalls die auf dem Dunstabzug 1 aufliegende Abdeckung 8 nach unten. Sobald die Abdeckung 8 die oberen horizontalen Ablageschenkel 25 der Abluftkonsole 2 erreicht hat, liegt sie auf diesen auf und nimmt nicht weiter an der AbwƤrtsbewegung des Dunstabzugs 1 teil.The controller 26 sets an integrated into the extractor 1 winding device in motion, so that moves through the extension of the ropes 13 of the extractor 1 from its rest position in the exhaust air console 2 out down. At the same time, the cover 8 resting on the extractor 1 also moves downwards. As soon as the cover 8 has reached the upper horizontal storage leg 25 of the exhaust air console 2, it rests on these and does not continue to participate in the downward movement of the extractor 1.

Bei der Montage der Dunstabzugshaube lƤsst sich eine Arbeitsstellung voreinstellen, die an die Hƶhe des Arbeitsfeldes und die Raumhƶhe angepasst ist. Weiterhin hƤngt die Arbeitsstellung noch von der Art des Herds ab, da bei der Verwendung eines Gasherds Ć¼blicherweise ein grĆ¶ĆŸerer Abstand zwischen Herd und Dunstabzug eingehalten werden muss, als bei Verwendung eines Elektroherds. Bei den Ć¼blicherweise vorkommenden VerhƤltnissen betrƤgt der Abstand zwischen dem Dunstabzug und der Abluftkonsole etwa zwischen 50 und 70 cm.When installing the cooker hood you can preset a working position that is adapted to the height of the working area and the room height. Furthermore, the working position still depends on the type of cooker, as when using a gas stove usually a greater distance between the stove and extractor must be complied with, as when using an electric cooker. In the usual circumstances, the distance between the extractor and the exhaust air console is approximately between 50 and 70 cm.

Ist die voreingestellte Arbeitsstellung erreicht, stoppt die Wickeleinrichtung und der Dunstabzug 1 verbleibt in der erreichten Position. Gleichzeitig schaltet die elektronische Steuerung 26 das DunstabzugsgeblƤse 3 und das AbluftgeblƤse 4 ein. Die Abluft Ć¼ber dem Herd wird nun durch die Absaugschlitze 10 in dem Dunstabzug 1 abgesaugt, in einer hier nicht dargestellten Abscheideeinrichtung von festen und flĆ¼ssigen Partikeln befreit und nach dem Durchgang durch das DunstabzugsgeblƤse 3 in die AbluftdĆ¼se 16 gedrĆ¼ckt. Durch die Verengung des Strƶmungsquerschnitts der AbluftdĆ¼se 16 zwischen der DĆ¼seneintrittsƶffnung 17 und der DĆ¼senaustrittsƶffnung 18 wird die Abluft in der AbluftdĆ¼se 16 beschleunigt.When the preset working position is reached, the winding device stops and the extractor 1 remains in the reached position. At the same time, the electronic controller 26 turns on the extractor fan 3 and the exhaust fan 4. The exhaust air over the stove is now sucked through the suction slots 10 in the extractor hood 1, freed in a separator not shown here of solid and liquid particles and pressed after passing through the extractor fan 3 in the exhaust nozzle 16. Due to the constriction of the flow cross section of the exhaust nozzle 16 between the nozzle inlet opening 17 and the nozzle outlet opening 18, the exhaust air is accelerated in the exhaust nozzle 16.

Dadurch entsteht oberhalb der AbluftdĆ¼se 16 der Strahlkegel 22, der in der Abluftkonsole 2 auf die Abdeckung 8 auftrifft. SelbstverstƤndlich wird der tatsƤchlich sich ergebende Strahlkegel nicht diese saubere in der Zeichnung dargestellte Form erreichen. Insbesondere in den Randzonen wird es zu einer zumindest geringfĆ¼gigen Vermischung mit der Raumluft kommen. In der Abluftkonsole 2 wird deshalb ein grĆ¶ĆŸeres Volumen ankommen als in dem Dunstabzug von der AbluftdĆ¼se 16 abgegeben wird.This results in above the exhaust nozzle 16, the jet cone 22 which impinges on the cover 8 in the exhaust air console 2. Of course, the actual resulting beam cone will not achieve this clean shape shown in the drawing. In particular in the peripheral zones, there will be an at least slight mixing with the room air. Therefore, a larger volume will arrive in the exhaust air console 2 than is emitted from the exhaust air nozzle 16 in the extractor hood.

Das AbluftgeblƤse 4 wird deshalb mit einer hƶheren Volumenleistung ausgestattet als das DunstabzugsgeblƤse 3. Um die Vermischung mit Raumluft in den Randbereichen des Strahlkegels 22 mƶglichst gering zu halten, kann die AbluftdĆ¼se 16 an ihrer DĆ¼senaustrittsƶffnung 18 auch mit einer hier nicht dargestellten Abrisskante versehen sein.The exhaust fan 4 is therefore equipped with a higher volume capacity than the extractor blower 3. In order to minimize the mixing with ambient air in the edge regions of the beam cone 22, the exhaust nozzle 16 may be provided at its nozzle outlet opening 18 with a tear-off edge not shown here.

Die Richtung der Abluftstrƶmung 21 ist durch die Doppelpfeile in Fig. 1 angedeutet. Unterhalb der Abdeckung 8 bildet sich eine Fluidschicht aus, die seitlich Ć¼ber den vertikalen Abluftspalt 11 abgezogen wird. In der Abluftkonsole 2 wird die Abluft an der Abdeckung 8 vorbei zu dem Abluftauslass 6 gefĆ¼hrt. Von dort gelangt sie in den Abluftkanal 7, der an dem AbluftgeblƤse 4 endet. Dieses AbluftgeblƤse 4 kann sich in der AuƟenmauer oder aber auch an der AuƟenseite der AuƟenmauer befinden. In speziellen FƤllen kann es auch in eine Kaminwand eingesetzt werden, so dass die Abluft hier Ć¼ber den Kamin nach auƟen gefƶrdert wird.The direction of the exhaust air flow 21 is indicated by the double arrows in Fig. 1 indicated. Below the cover 8, a fluid layer is formed, which is withdrawn laterally over the vertical exhaust air gap 11. In the exhaust air console 2, the exhaust air is passed to the cover 8 over to the exhaust outlet 6. From there it enters the exhaust duct 7, which ends at the exhaust fan 4. This exhaust fan 4 may be located in the outer wall or on the outside of the outer wall. In special cases, it can also be used in a chimney wall, so that the exhaust air is conveyed here via the fireplace to the outside.

SelbstverstƤndlich kann das DunstabzugsgeblƤse 3 mit verschiedenen Leistungsstufen betrieben werden. Wird die Leistungsstufe gewechselt, schaltet ebenfalls das AbluftgeblƤse 4 auf eine andere Leistungsstufe.Of course, the extractor blower 3 can be operated with different power levels. If the power level is changed, also the exhaust fan 4 switches to another power level.

Wird die Dunstabzugshaube nicht mehr benƶtigt, wird sie, insbesondere Ć¼ber die Fernsteuerung, abgeschaltet. In Folge der Abschaltung wird das DunstabzugsgeblƤse 3 und das AbluftgeblƤse 4 gestoppt. Dann wird die nicht gezeigte Wickeleinrichtung in Betrieb gesetzt und der Dunstabzug 1 Ć¼ber die Seile 13 nach oben gezogen.If the cooker hood is no longer needed, it is switched off, in particular via the remote control. As a result of the shutdown the extractor fan 3 and the exhaust fan 4 is stopped. Then, the winding device, not shown, is put into operation and the extractor 1 is pulled over the ropes 13 upwards.

Die Wickeleinrichtung wird erst angehalten wenn beispielsweise ein Stopp-Schalter betƤtigt wird. Es ist aber ebenso mƶglich, das Erreichen der Ruhestellung ohne einen mechanisch bewegten Schalter festzustellen. Zu diesem Zweck kann eine Lichtschranke oder ein NƤherungssensor eingesetzt werden.The winding device is stopped only when, for example, a stop switch is actuated. But it is also possible to determine the achievement of the rest position without a mechanically moving switch. For this purpose, a photoelectric sensor or a proximity sensor can be used.

Nach Erreichen der Ruhestellung ist der Dunstabzug 1 vollkommen in die Abluftkonsole 1 eingezogen, wie es in den Figuren 2 und 4 dargestellt ist. WƤhrend des Einfahrens des Dunstabzugs 1 in die Abluftkonsole 2 hebt der Dunstabzug 1 die auf den oberen horizontalen Ablageschenkeln 25 aufliegende Abdeckung 8 an, so dass der zur VerfĆ¼gung stehende Raum in der Abluftkonsole 2 entsprechend vergrĆ¶ĆŸert wird.After reaching the rest position of the extractor 1 is fully recovered in the exhaust air console 1, as in the Figures 2 and 4 is shown. During retraction of the extractor hood 1 into the exhaust air console 2, the extractor hood 1 raises the cover 8 resting on the upper horizontal support legs 25, so that the available space in the exhaust air console 2 is correspondingly increased.

In der Ruhestellung befindet sich die Abdeckung 8 kurz unterhalb der oberen Begrenzung der Abluftkonsole 2 und liegt auf dem Dunstabzug 1 auf. Das Dekorpanel 9 befindet sich in dieser Position des Dunstabzugs 1 in dem freien Raum zwischen den Rahmenleisten 23 und liegt an den unteren horizontalen Abdeckschenkeln 24 der Abluftkonsole 2 an. Von dem Dunstabzug 2 sind in Ruhestellung folglich nur die beiden Absaugschlitze 10 sichtbar. Das Dekorpanel 9 kann so gestaltet sein, dass es von der Decke 14, die die Abluftkonsole 2 umgibt, praktisch nicht unterscheidbar ist. Es kann aber bewusst auch so gestaltet werden, dass es einen Kontrast zu der Decke 14 darstellt.In the rest position, the cover 8 is located just below the upper boundary of the exhaust air console 2 and rests on the extractor 1. The decorative panel 9 is located in this position of the extractor 1 in the free space between the frame strips 23 and is applied to the lower horizontal cover legs 24 of the exhaust air console 2. From the extractor 2, therefore, only the two suction slots 10 are visible in the rest position. The decorative panel 9 may be designed to be of the ceiling 14, which surrounds the exhaust air console 2, is practically indistinguishable. But it can also be deliberately designed so that it is a contrast to the ceiling 14.

UnabhƤngig von der Gestaltung des Dekorpanels 9 befindet sich der Dunstabzug 1 in Ruhestellung innerhalb der Decke 14 und behindert in keiner Weise die freie Sicht durch den Raum. Nur wenn die Dunstabzugshaube betrieben werden soll, wird der Dunstabzug 1 aus der Decke herausgefahren und in Arbeitsstellung gebracht. Trotz dieser beiden unterschiedlichen Stellungen kann die Dunstabzugshaube als Ablufthaube betrieben werden, die alle unangenehmen GerĆ¼che aus dem Raum entfernt und die mit den GerĆ¼chen beladene Abluft nach auƟen befƶrdert.Regardless of the design of the decorative panel 9 is the extractor 1 in the rest position within the ceiling 14 and hindered in any way the clear view through the room. Only when the cooker hood is to be operated, the extractor hood 1 is moved out of the ceiling and brought into working position. Despite these two different positions, the cooker hood can be operated as an exhaust hood, which removes all unpleasant odors from the room and conveys the exhaust air laden with the odors to the outside.

Sollte ein Raum nicht die erforderliche Hƶhe fĆ¼r eine entsprechend weit abgesenkte Decke aufweisen, sind selbstverstƤndlich mit der erfindungsgemƤƟen Vorrichtung auch andere Lƶsungen mƶglich. So lƤsst sich die Abluftkonsole 2 auch nur teilweise in die Decke einbauen. In diesem Fall mĆ¼ssen die Rahmenleisten entsprechend angepasst und die aus der Decke herausstehenden Seitenteile sollten ebenfalls mit Dekorpanelen versehen werden.Should a room not have the required height for a correspondingly far lowered ceiling, of course, other solutions are possible with the device according to the invention. Thus, the exhaust air console 2 can only partially install in the ceiling. In this case, the frame strips must be adapted accordingly and the protruding from the ceiling side panels should also be provided with decorative panels.

Ƅhnliches gilt, wenn gar keine abgesenkte Decke mƶglich ist und die Abluftkonsole direkt unterhalb der Decke angebracht werden muss. In diesem Fall mĆ¼ssen die AuƟenseiten der Abluftkonsole vollstƤndig mit Dekorpanelen verkleidet oder selbst entsprechend ansehnlich gestaltet werden. Um die Hƶhe der Abluftkonsole mƶglichst klein zu halten, kann auch ein seitlicher Abluftauslass gewƤhlt werden, so dass der Abluftkanal ebenfalls direkt unter der Decke verlaufen kann. Aber auch hier verschwindet der Dunstabzug in seiner Ruhestellung vollkommen in der Abluftkonsole und gibt die Sicht durch den Raum frei.The same applies if no lowered ceiling is possible and the exhaust air console must be installed directly below the ceiling. In this case, the outer sides of the exhaust air console must be completely covered with decorative panels or even appropriately designed. In order to keep the height of the exhaust air console as small as possible, a lateral exhaust air outlet can be selected so that the exhaust duct can also run directly under the ceiling. But here, too, the extractor disappears in its rest position completely in the exhaust air console and gives the view through the room.

In der Abluftkonsole 2, insbesondere aber in dem Dunstabzug 1, kann ein hier nicht dargestellter Kohlefilter vorgesehen sein. In diesem Fall ist weiterhin eine nicht dargestellte Abluftweiche erforderlich, die die Abluft entweder durch die AbluftdĆ¼se oder durch den Kohlefilter fĆ¼hrt. Hinter dem Kohlefilter befindet sich in dem Dunstabzug 1 ein - hier auch nicht gezeigter - alternativer Abluftauslass.In the exhaust air console 2, but in particular in the extractor 1, a not shown here carbon filter can be provided. In this case, a non-illustrated diverter switch is still required, which leads the exhaust air either through the exhaust nozzle or through the carbon filter. Behind the carbon filter is located in the extractor 1 a - not shown here - alternative exhaust outlet.

Die Dunstabzugshaube kann nun als Ablufthaube betrieben werden, wenn sich die Abluftweiche in einer Stellung befindet, in der die Abluft der AbluftdĆ¼se 16 zugefĆ¼hrt wird. Diese Betriebsweise eignet sich insbesondere fĆ¼r die warme Jahreszeit, in der die in den Raum einstrƶmende Luft, die die nach auƟen geleitete Abluft ersetzt, kaum kƤlter als die Raumtemperatur ist.The extractor hood can now be operated as an exhaust hood when the extractor switch is in a position in which the exhaust air of the exhaust nozzle 16 is supplied. This mode of operation is particularly suitable for the warm season, in which the air flowing into the room, which replaces the outgoing exhaust air, is hardly colder than the room temperature.

Ebenso kann die Dunstabzugshaube aber auch als Umlufthaube betrieben werden, wenn die Abluft durch die Abluftweiche durch den Kohlefilter gefĆ¼hrt und Ć¼ber den alternativen Abluftauslass wieder an die Raumluft abgegeben wird. Im Umluftbetrieb ist kein zweites GeblƤse erforderlich, so dass das AbluftgeblƤse 4 nicht in Betrieb gesetzt werden muss. Da bei dieser Betriebsweise keine Raumluft durch AuƟenluft ersetzt werden muss, ist auch kein Energieverlust durch das Aufheizen der AuƟenluft auf Raumtemperatur zu befĆ¼rchten.Likewise, the hood can also be operated as a recirculation hood, when the exhaust air is guided through the exhaust baffle through the carbon filter and discharged through the alternative exhaust outlet back to the room air. In recirculation mode, no second fan is required, so that the exhaust fan 4 does not need to be put into operation. Since in this mode of operation no room air has to be replaced by outside air, no energy loss due to the heating of the outside air to room temperature is to be feared.

Diese verschiedenen Betriebsweisen kƶnnen sinnvoll fĆ¼r einen Sommerbetrieb (Abluft) oder einen Winterbetrieb (Umluft) genutzt werden.These different operating modes can be used meaningfully for a summer operation (exhaust air) or a winter operation (recirculation).

Bezugszeichenliste:LIST OF REFERENCE NUMBERS

11
Dunstabzugextractor
22
Abluftkonsoleexhaust console
33
DunstabzugsgeblƤseExtractor fan
44
AbluftgeblƤseexhaust fan
55
DunstansaugschlitzeDunstansaugschlitze
66
Abluftauslassexhaust outlet
77
Abluftkanalexhaust duct
88th
Abdeckungcover
99
Dekorpaneldecorative panel
1010
Absaugschlitzesuction slots
1111
Abluftspaltair gap
1212
AufnahmefalzAufnahmefalz
1313
Seilrope
1414
Deckeblanket
1515
StĆ¼tzfalzStĆ¼tzfalz
1616
AbluftdĆ¼seAbluftdĆ¼se
1717
DĆ¼seneintrittsƶffnungNozzle inlet opening
1818
DĆ¼senaustrittsƶffnungNozzle outlet opening
1919
DĆ¼senwandnozzle wall
2020
Leitelementvane
2121
Abluftstrƶmungexhaust air flow
2222
Strahlkegeljet cone
2323
Rahmenleisteframe strip
2424
unterer horizontaler Abdeckschenkellower horizontal cover leg
2525
oberer horizontaler AblageschenkelUpper horizontal storage leg
2626
elektronische Steuerungelectronic control

Claims (10)

  1. Extractor hood for exhausting and discharging exhaust air, comprising: a lower device (1) for extracting exhaust air generated by an exhaust air source, wherein the lower device (1) comprises at least one exhaust air inlet (10), a first blower (3) and a blow-off orifice (18),
    an upper device (2) and a second blower (4) for discharging the exhaust air supplied by the lower device (1), wherein the upper device (2) comprises at least one suction opening (11) and at least one exhaust outlet (6), characterized in that
    the upper device (2) is fixedly mounted and the lower device (1) is mounted so as to be height-adjustable, such that the lower device (1) can be moved into a working position and into a rest position, wherein, in the working position, the at least one exhaust air inlet (10) of the lower device (1) is arranged in proximity of the exhaust air source and the exhaust air exiting from the blow-off orifice (18) is guided by room air to the at least one suction opening (11) of the upper device (2), and wherein the lower device (1), when it is in its rest position, it is been moved into the upper device (2) configured for receiving the lower device (1).
  2. Extractor hood according to claim 1, characterized in that the blowoff orifice (18) of the lower device (1) is designed as a nozzle (16).
  3. Extractor hood according to one of claims 1 to 2, characterized in that the volume output of the second blower (4) is greater than the volume output of the first blower (3).
  4. Extractor hood according to one of claims 1 to 3, characterized in that the lower device (1) is suspended from a rope (13) wherein a motor is provided for driving at least one winding device.
  5. Extractor hood according to one of claims 1 to 4, characterized in that the at least one suction opening of the upper device (2) is designed in the form of a circumferential gap (11).
  6. Extractor hood according to claim 5, characterized in that a cover (8) is provided above the gap (11), which cover is displaceable in height.
  7. Extractor hood according to claim 6, characterized in that the cover (8) is movable by the lower device (1).
  8. Extractor hood according to one of claims 1 to 7, characterized in that the upper device (2) is such designed that it is retractable in a suspended ceiling (14).
  9. Extractor hood according to one of claims 1 to 8, characterized in that a working height of the lower device (1) can be preset.
  10. Extractor hood according to one of claims 1 to 9, characterized in that a controller (26) is provided which is such designed that upon switch-on of the extractor hood the lower device (1) moves from the rest position into the working position.
EP16150899.9A 2015-01-16 2016-01-12 Extarctor hood Active EP3045822B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015200639.5A DE102015200639A1 (en) 2015-01-16 2015-01-16 Device for extracting exhaust air

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EP3045822A1 EP3045822A1 (en) 2016-07-20
EP3045822B1 true EP3045822B1 (en) 2017-11-22

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IT201800004522A1 (en) 2018-04-16 2019-10-16 "PERFECTED HOOD WITH RAIL OR UP AND DOWN"
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CN111006282B (en) * 2020-01-03 2021-11-02 å®ę³¢ę–¹å¤ŖåŽØå…·ęœ‰é™å…¬åø Fume exhaust fan

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CN107166473A (en) * 2017-07-25 2017-09-15 佛山åø‚ę­£ē•„äæ”ęÆē§‘ęŠ€ęœ‰é™å…¬åø A kind of energy-saving range hood
CN107166473B (en) * 2017-07-25 2019-09-24 ę³‰å·žå°å•†ęŠ•čµ„åŒŗ大千ęœŗę¢°ē§‘ęŠ€ęœ‰é™å…¬åø A kind of smoke exhaust ventilator

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