EP3045822B1 - Hotte aspirante - Google Patents

Hotte aspirante 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.)
Active
Application number
EP16150899.9A
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German (de)
English (en)
Other versions
EP3045822A1 (fr
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
Original Assignee
Berbel Ablufttechnik GmbH
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Publication date
Application filed by Berbel Ablufttechnik GmbH filed Critical Berbel Ablufttechnik GmbH
Publication of EP3045822A1 publication Critical patent/EP3045822A1/fr
Application granted granted Critical
Publication of EP3045822B1 publication Critical patent/EP3045822B1/fr
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Anticipated expiration legal-status Critical

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Classifications

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

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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)

Claims (10)

  1. Hotte aspirante pour aspirer et évacuer l'air vicié, comprenant : un dispositif inférieur (1) pour aspirer l'air vicié qui est produit par une source d'air vicié, dans laquelle le dispositif inférieur (1) comprend au moins une admission d'air vicié (10), un premier ventilateur (3) et une ouverture d'échappement (18),
    un dispositif supérieur (2) et un deuxième ventilateur (4) pour évacuer l'air vicié dégagé du dispositif inférieur (1), dans laquelle le dispositif supérieur (2) comprend au moins une ouverture aspirante (11) et au moins une sortie d'air vicié (6), caractérisée en ce que
    le dispositif supérieur (2) est monté de façon fixe et le dispositif inférieur (1) est monté en pouvant être réglé en hauteur de manière telle que le dispositif inférieur (1) peut être déplacé dans une position de travail et dans une position de repos, dans laquelle, dans la position de travail, la au moins une admission d'air vicié (10) du dispositif inférieur (1) est disposée près de la source d'air vicié et l'air vicié de l'ouverture d'échappement (18) est guidé par l'air ambiant vers la au moins une ouverture aspirante (11) du dispositif supérieur (2), et dans laquelle, dans la position de repos, le dispositif inférieur (1) est inséré dans le dispositif supérieur (2) mis en place pour loger le dispositif inférieur (1).
  2. Hotte aspirante selon la revendication 1, caractérisée en ce que l'ouverture d'échappement (18) du dispositif inférieur (1) est conçue comme une buse (16).
  3. Hotte aspirante selon l'une des revendications 1 à 2, caractérisée en ce que la puissance volumique du deuxième ventilateur (4) est supérieure à la puissance volumique du premier ventilateur (3).
  4. Hotte aspirante selon l'une des revendications 1 à 3, caractérisée en ce que le dispositif inférieur (1) est suspendu à au moins un câble (13), dans laquelle un moteur est prévu pour entraîner au moins un dispositif d'enroulement.
  5. Hotte aspirante selon l'une des revendications 1 à 4, caractérisée en ce que la au moins une ouverture aspirante du dispositif supérieur (2) est réalisée en forme de fente périphérique (11).
  6. Hotte aspirante selon la revendication 5, caractérisée en ce que au-dessus de la fente (11) est prévu un recouvrement (8) qui peut être guidé en hauteur de façon déplaçable.
  7. Hotte aspirante selon la revendication 6, caractérisée en ce que le recouvrement (8) peut être déplacé par le dispositif inférieur (1).
  8. Hotte aspirante selon l'une des revendications 1 à 7, caractérisée en ce que le dispositif supérieur (2) est conçu de manière telle qu'il peut être escamoté dans un plafond suspendu (14).
  9. Hotte aspirante selon l'une des revendications 1 à 8, caractérisée en ce qu'une hauteur de travail du dispositif inférieur (1) peut être préréglée.
  10. Hotte aspirante selon l'une des revendications 1 à 9, caractérisée en ce qu'une commande (26) est prévue qui est conçue de manière telle que, lors de la mise en marche de la hotte aspirante, le dispositif inférieur (1) se déplace de la position de repos à la position de travail.
EP16150899.9A 2015-01-16 2016-01-12 Hotte aspirante Active EP3045822B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015200639.5A DE102015200639A1 (de) 2015-01-16 2015-01-16 Vorrichtung zum Absaugen von Abluft

Publications (2)

Publication Number Publication Date
EP3045822A1 EP3045822A1 (fr) 2016-07-20
EP3045822B1 true EP3045822B1 (fr) 2017-11-22

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ID=55129584

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16150899.9A Active EP3045822B1 (fr) 2015-01-16 2016-01-12 Hotte aspirante

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EP (1) EP3045822B1 (fr)
DE (1) DE102015200639A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
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CN107166473A (zh) * 2017-07-25 2017-09-15 佛山市正略信息科技有限公司 一种节能型抽油烟机

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ITUA20161328A1 (it) * 2016-03-03 2017-09-03 Elica Spa Cappa per ambienti domestici dotata di una unità di comando e controllo esterna alla cappa
ITUA20162433A1 (it) * 2016-04-08 2017-10-08 Faber Spa Cappa perfezionata del tipo a saliscendi o up and down
DE102017101384A1 (de) 2017-01-25 2018-07-26 Miele & Cie. Kg Dunstabzugshaube, System und Verfahren zur Absaugung von Kochwrasen
CN107339731B (zh) * 2017-09-04 2024-09-13 中山市韩宝生活电器有限公司 具有余烟收集功能的自动伸缩式吸油烟机
CA3079944A1 (fr) 2017-10-24 2019-05-02 Kenfam Pty Ltd Hotte d'echappement
IT201800004522A1 (it) 2018-04-16 2019-10-16 "cappa perfezionata del tipo a saliscendi o up and down"
DE102018114805A1 (de) * 2018-06-20 2019-12-24 Miele & Cie. Kg Inseldunstabzugshaube und Verfahren zum Betreiben einer Inseldunstabzugshaube
CN111006282B (zh) * 2020-01-03 2021-11-02 宁波方太厨具有限公司 一种吸油烟机
GB2624441A (en) * 2022-11-18 2024-05-22 Dyson Technology Ltd Air treatment device

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DE102008041738A1 (de) * 2008-09-01 2010-03-04 BSH Bosch und Siemens Hausgeräte GmbH Dunstabzugsvorrichtung, insbesondere deckenbefestigbare Inselesse, sowie Modulanordnung mit einer solchen Dunstabzugsvorrichtung
ITMI20092078A1 (it) * 2009-11-26 2011-05-27 Faber Spa "cappa con dispositivo sali-scendi"
FR2997166B3 (fr) * 2012-10-19 2015-05-15 Airforce S P A Hotte filtrante simplifiee
CN204006204U (zh) * 2014-03-27 2014-12-10 宁波方太厨具有限公司 一种串联双风机型吸油烟机

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107166473A (zh) * 2017-07-25 2017-09-15 佛山市正略信息科技有限公司 一种节能型抽油烟机
CN107166473B (zh) * 2017-07-25 2019-09-24 泉州台商投资区大千机械科技有限公司 一种抽油烟机

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Publication number Publication date
EP3045822A1 (fr) 2016-07-20
DE102015200639A1 (de) 2016-07-21

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