EP3045824A1 - Dispositif d'aspiration d'air au-dessus d'une cuisiniere - Google Patents

Dispositif d'aspiration d'air au-dessus d'une cuisiniere Download PDF

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Publication number
EP3045824A1
EP3045824A1 EP16150927.8A EP16150927A EP3045824A1 EP 3045824 A1 EP3045824 A1 EP 3045824A1 EP 16150927 A EP16150927 A EP 16150927A EP 3045824 A1 EP3045824 A1 EP 3045824A1
Authority
EP
European Patent Office
Prior art keywords
exhaust air
filter
hob
air inlet
flow cross
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP16150927.8A
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German (de)
English (en)
Other versions
EP3045824B1 (fr
Inventor
Peter Ahlmer
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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Application filed by Berbel Ablufttechnik GmbH filed Critical Berbel Ablufttechnik GmbH
Publication of EP3045824A1 publication Critical patent/EP3045824A1/fr
Application granted granted Critical
Publication of EP3045824B1 publication Critical patent/EP3045824B1/fr
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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
    • F24C15/2042—Devices for removing cooking fumes structurally associated with a cooking range e.g. downdraft
    • 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
    • F24C15/2035—Arrangement or mounting of filters

Definitions

  • the invention relates to a device for extracting exhaust air over a hob according to the preamble of claim 1.
  • extractor hoods are used, with which the cooking fumes and the odors associated therewith can be sucked off.
  • Such extractors have a fan for generating a flow over the hob. Basically, they can be divided into two categories.
  • the exhaust air is returned to the room.
  • the exhaust air must be cleaned of the adhering odors.
  • a carbon filter is provided, which must either be replaced at certain intervals or regenerated.
  • Both types of extractor hoods usually have a separator for the separation of solid and liquid components of the exhaust air.
  • the deposition of the dirt particles can be done by fat filter, which in particular retain the fat droplets contained.
  • Such grease filters can be easily removed and cleaned in a dishwasher.
  • Both separators remove from the exhaust air a large part of the contained solid and liquid components, such as grease droplets, dirt particles and condensed water before the exhaust air enters the fan.
  • the blower is kept clean and functional in this way. In the exhaust fume hoods is further prevented by the deposition that just fat laden exhaust air comes outside and the fats contained, for example, on the outer wall.
  • the invention has the object of providing a device for extracting exhaust air over a hob according to the preamble of claim 1 in such a way that the degree of separation, in particular of fats contained in the exhaust air, can be increased.
  • the object is achieved according to the invention by a device for extracting exhaust air over a hob with the features of claim 1.
  • the invention provides an exhaust duct whose flow cross-section decreases with increasing distance from the at least one exhaust air inlet, so that the air flowing through the exhaust duct Exhaust air is accelerated, a first separator with a Abluftumlenkung that deflects the accelerated exhaust air so strong that contained liquid and solid particles move on a trajectory with less curvature and a second separator with at least one of the exhaust air to flow through filter whose flow cross-section larger as the flow cross-section of the first separator, so that the accelerated exhaust air is slowed down.
  • the first separation device works particularly efficiently when high flow velocities are achieved.
  • high flow velocities even smaller and lighter particles have a sufficiently large inertia that they can not completely follow the deflected exhaust air, but rather maintain their straight trajectory longer, or take a trajectory with a lower curvature. In this way, they reach up to a responsible for the deflection of the exhaust deflecting element and are deposited on this.
  • low flow rates only slightly larger particles behave in this way.
  • very small particles quickly adapt their trajectory to the path of the deflected exhaust air and are carried along.
  • the at least one exhaust air inlet is provided in or next to the hob.
  • the exhaust air is no longer upwards, but sucked down.
  • the view through the kitchen - especially when used with a kitchen block - is undisturbed in this way. Since no large-scale exhaust air inlet can be used here and the exhaust air already undergoes a first acceleration through the slit-shaped exhaust air inlet, here in particular the first separation device downstream of the exhaust air inlet and the exhaust air system accelerating the exhaust air again can be used particularly effectively.
  • the filter for example, glass fibers or synthetic materials can be used.
  • the at least one, to be flowed through by the exhaust air filter is advantageously made of metal.
  • stainless steel or aluminum is used here.
  • Such filters are corrosion resistant and can not be attacked by fatty acids contained in the exhaust air. Even when cleaning the filter in a dishwasher, the filter can not be damaged.
  • a deflection element which has an angle between 10 and 30 ° to the horizontal. In particular, an angle between 20 and 22 ° has proven to be particularly advantageous. It has been found that this inclination of the deflecting element is sufficient so that separated and stored fat droplets can run down to the free edge of the deflecting element and can drip off this edge.
  • the highest possible flow rate is required.
  • the exhaust air When flowing through the at least one slit-shaped exhaust air inlet, the exhaust air already experiences an acceleration, which is not yet sufficient.
  • the flow cross section in front of the first separation device decreases to 40 to 60% of the flow cross section behind the at least one exhaust air inlet.
  • the first exhaust air duct is thus constructed so that a reduction of the flow cross section which is as continuous as possible takes place between the exhaust air inlet and the first precipitator.
  • the exhaust air should have a flow velocity of at least 8 m / s, at least at the highest power level of the blower.
  • the filter Since at a low power level of the fan especially very small fat droplets are deposited mainly on the filter, accumulates here over time, a significant amount of fat. In order to ensure that the filter only has to be cleaned at longer intervals, the filter should be arranged in such a way that accumulated fat can run off. The at least one filter is therefore arranged vertically. In this situation, not only does the accumulated grease drain off best, but also the largest flow cross-section can be realized.
  • the grease draining from the deflector and from the filter must not drip onto the kitchen floor or into a base cabinet. It is therefore advantageous under the deflecting element and the at least one filter provided a drip pan.
  • This drip tray is designed to hold more fat without overflowing. It may also be provided a level sensor that generates an alarm when the highest level is reached.
  • the drip pan can be designed so that it can be removed and emptied separately. But are particularly advantageous the exhaust air duct, the first separator, the second separator and the drip tray constructed as a removable module. In this way, only at longer intervals a single action is necessary to maintain the extractor in a neat and functional condition. The entire module can be placed in a dishwasher and easily cleaned there.
  • the device according to the invention can be used both as an exhaust air vent, as well as a circulating air vent.
  • the exhaust air outlet therefore either returns the exhaust air to the room via an odor filter or directs it to the outside via another exhaust air duct.
  • a switch is still provided. In this way, z.
  • the extractor can be operated in the winter as Um Kunststoffabzug and in the summer as exhaust vent. The switching between the operating modes can be done manually, but also, for example, depending on the outside temperature automatically.
  • At the front edge of the hob controls are often attached as touch sensors. With an exhaust air inlet on the front of the hob, these controls would pollute very quickly and make regulation or shutdown difficult or even impossible. It is therefore provided at least one exhaust air inlet behind the hob or at least one exhaust air inlet left and right of the hob. In a conventional hob with two consecutive rows of cooking zones rather at least two laterally exhaust air inlets are used. In a single-row arrangement of several adjacent cooking zones, however, at least one exhaust air inlet behind the hob is advantageous.
  • hobs there are many different hobs available on the market that meet a wide range of requirements. These hobs should also be usable in connection with the device according to the invention. It is therefore provided a frame in which a hob with standard dimensions can be used. In this way, retrofitting of the device according to the invention is possible even in an existing kitchen.
  • the at least one exhaust air inlet can be integrated in the frame.
  • Fig. 1 an embodiment of the extractor hood 1 according to the invention is shown without built-in hob. It is only visible the hob opening 12, in which a standard hob can be used.
  • the frame 2 of the extractor 1 may have different sizes, the dimensions are each adapted to a particular standard size of a hob.
  • the frame 2 can be used in a conventional manner in a countertop and attached via the mounting brackets 3 at this.
  • the frame 2 has on both sides next to the hob opening 12 each designed as a suction gap 4 exhaust air inlet. Each suction gap 4 is closed by a shutter 5 when the extractor 1 is not in operation.
  • the closure flaps 5 each have two side guides 15, which guide the closing flaps 5 during the opening and closing movement and, in the open position of the closing flaps 5, form the side walls of an intake channel. The closure flaps 5 are each moved by an opening mechanism 6.
  • a control panel 11 is provided in front of the right-hand shutter 5. At this panel 11, the extractor 1 can be switched on and off. Likewise, the various power levels can be switched via this control panel 11.
  • the fan duct 7 connects the upper part 24 of the extractor hood 1 with the fan 8.
  • the controller 23 is in a manner not visible here with the control panel 11 in electrical connection.
  • the extractor 1 shown here is designed as a recirculation air vent. He is therefore provided with the odor filter 10.
  • the odor filter 10 is connected directly to the exhaust air outlet, which is invisible in this illustration, on the blower 8. The cleaned exhaust air is supplied to the room via the base area of the lower cabinet in which the extractor hood 1 is mounted.
  • Fig. 2 In the sectional view in Fig. 2 is on the right flap 5, for reasons of clarity, the side guide 5 omitted. It can be seen so the cleaning module 14, which can be pulled out completely upwards. The cleaning module 14 can be cleaned, for example, in a dishwasher and can then be used again in the extractor 1.
  • the cleaning module 14 has the guide plate 19 (the components of the cleaning module 14 are in detail in Fig. 4 shown), the baffle plate 20, the filter 21 and the sump 22.
  • the filter 21 is mounted above an opening so that the exhaust air leaves the cleaning module via the filter 21.
  • Fig. 3 an alternative arrangement is shown.
  • the extractor hood according to the invention is constructed here so that three closing flaps 5 are provided for the exhaust air inlets at the rear edge of the hob 13.
  • the control panel 17 In the front part of the hob 13, the control panel 17 is housed.
  • On lateral exhaust air inlets was omitted in this embodiment.
  • the hob 13 here has three individual cooking zones 16, all of which are directly adjacent to the respective exhaust air inlet below the closing flaps 5. This results in particular for the central cooking zone 16, a better extraction result than in a fume hood with two lateral exhaust air inlets.
  • the three adjacent exhaust air outlets are each equipped with their own cleaning module.
  • the two lateral exhaust air inlets of the first embodiment of the FIGS. 1 to 2 and 4 to 5 are better suited for a hob with a square arrangement of four cooking zones.
  • Fig. 5 the ratio of the flow cross sections should be displayed.
  • the different flow cross sections are necessary in order to be able to accelerate the exhaust air flow before the first separation device, the baffle plate 20 accordingly.
  • the guide plate 19 is provided.
  • the distance b between the lower edge of the baffle 19 and the free edge of the baffle 20 is about 60% of the distance a between the baffle 19 and the shutter 5 in the upper region of the exhaust duct. Through this smaller flow cross-section of the exhaust air flow is accelerated.
  • the exhaust air flow is in Fig. 4 indicated by arrows.
  • the cross-flow cooking vapor is sucked into the suction gap 4 and forced through the exhaust air guide (eg shutter 5 and guide plate 19) in the direction of the baffle plate 20.
  • the exhaust air guide eg shutter 5 and guide plate 19
  • the exhaust air flow is accelerated by the constriction of the flow cross section accordingly.
  • the fan 8 is designed so that the exhaust air flow in the region of the baffle plate 20 reaches a speed between 8 and 10 m / s. These values apply to the highest power level of the blower 8.
  • the baffle 20 occupies an angle of approximately 20 ° with respect to the horizontal.
  • the accelerated exhaust air flow is thus deflected by the baffle plate 20 very strong. Due to the high speed and the strong deflection even very small particles, especially fat droplets can not participate in the strong deflection and describe for reasons of inertia a much less curved trajectory than the exhaust air flow itself.
  • the fat droplets accumulate on its surface and run due to the inclination of the baffle plate 20 in the direction of the free edge. From there, the fat can drain into the drip pan 22.
  • the first and the second separator complement each other perfectly.
  • a very high separation efficiency is achieved in the first separation device via the baffle plate 20.
  • the filter 21 therefore only needs to retain very small amounts of fat.
  • the first separator operates less effectively than at a high power level. This means that, although larger particles are retained, but very small particles are not separated, but entrained with the exhaust air. The separation efficiency is thus lower in the first separation device at a lower power level of the blower 8.
  • the exhaust air flow at a lower power level of the fan 8 will flow more slowly through the filter 21. Due to this lower flow rate, the separation efficiency of the filter 21 increases, since the time required for the exhaust air through the filter increases.
  • the exhaust air is usually passed through carbon, which adsorbs the odor molecules with its large inner surface.
  • the carbon must be changed or regenerated from time to time.
  • the cleaned in the odor filter and freed from the adhering odors exhaust air can now be supplied to the room again. In this way, no heat is removed from the room.
  • the operation of the extractor hood according to the invention as a recirculation hood is therefore ideal for the cold season, in which the heated air should be kept as possible in the room.
  • a channel or hose is connected to the exhaust air outlet not visible here, which leads into the open and with its open side z. B. ends on the outer wall of a house.
  • the still laden with odors exhaust air is conveyed directly to the outside.
  • a switch can be provided at the exhaust air outlet, which feeds the exhaust air either via the odor filter 10 back to the room, or directs the exhaust air directly to the outside.
  • the switch can be controlled either manually or, for example, via a temperature outside sensor.
  • In the second case results in an automatic summer-winter operation, which must not be actively triggered by the user of the extractor.
  • the extractor can be switched via the control panel 11. It includes a power on and off function and a power level selection function.
  • the fan 8 When switching off the extractor via the control panel 11, the fan 8 is turned off first. With a short delay, the closing flaps 5 are closed via the opening mechanism 6. This creates a smooth surface that can fit flush into the worktop.
  • a sensor It may be provided in the drip pan 22, a sensor.
  • This sensor should be designed to detect the level of the surface of the deposited grease. If a certain level is reached which requires cleaning, a corresponding message can be generated by the control. This may be, for example, an acoustic message or a visual alarm via the control panel 11. For example, the alarm could be triggered when the extractor is turned on or off. In this way, the cooking process would not be interrupted by the cleaning.
  • closure flaps 5 should be open, which are required for the extraction of cooking fumes formed during cooking. In most cases, only one cooking zone 16 is used, so that only one open flap 5 is sufficient.
  • the shutter 5 are therefore individually controlled.
  • the fan 8 can be operated in this case at a lower power level, since only one exhaust air flow must be generated by an exhaust air inlet. The effect is the same as in the opening of all the flaps 5 and a correspondingly higher power level of the blower 8, despite the lower energy consumption.
  • the selection of the required exhaust air inlets can be made via the control panel 11. Alternatively, however, an automatic detection is possible. Thus, for example, via a coupling of the controller 23 with the hob 13, the currently used cooking zones 16 can be determined. But it can also provide sensors in the frame 2, which determine the cooking zone on which a pot is placed. When switching on the extractor 1 is then only the shutter open, which is assigned to the cooking zone used.

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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)
EP16150927.8A 2015-01-16 2016-01-12 Dispositif d'aspiration d'air d'une cuisiniere Active EP3045824B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015200642.5A DE102015200642A1 (de) 2015-01-16 2015-01-16 Vorrichtung zum Abziehen von Abluft über einem Kochfeld

Publications (2)

Publication Number Publication Date
EP3045824A1 true EP3045824A1 (fr) 2016-07-20
EP3045824B1 EP3045824B1 (fr) 2020-10-14

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EP16150927.8A Active EP3045824B1 (fr) 2015-01-16 2016-01-12 Dispositif d'aspiration d'air d'une cuisiniere

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DE (1) DE102015200642A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201700111914A1 (it) * 2017-10-05 2019-04-05 Vittinox S R L Struttura di supporto
EP3557141A1 (fr) * 2018-04-17 2019-10-23 Steel S.R.L. Cuisinière du type autoportant comportant un système d'extraction et de filtration de fumées intégré
WO2019238421A1 (fr) * 2018-06-13 2019-12-19 BSH Hausgeräte GmbH Combinaison d'appareils composée d'appareils ménagers, procédé permettant de faire fonctionner un système de hotte aspirante et produit-programme informatique
CN113237111A (zh) * 2021-05-31 2021-08-10 宁波方太厨具有限公司 一种吸油烟机及其控制方法
WO2021244847A1 (fr) * 2020-06-05 2021-12-09 Wesco Ag Dispositif d'extraction de vapeur et système de surface de cuisson
EP3809048B1 (fr) * 2019-10-18 2023-08-02 B.S. Service S.r.l. Assemblage d'un système d'extraction et d'une plaque de cuisson

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3338029B1 (fr) * 2015-08-19 2022-03-09 BSH Hausgeräte GmbH Appareil combiné avec plaque de cuisson et dispositif d'evacuation des fumées
CN107300199B (zh) * 2017-07-20 2023-05-05 杭州老板电器股份有限公司 一种立体进风油烟机

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4962694A (en) * 1988-04-15 1990-10-16 Graver James H Grill exhaust system
GB2263334A (en) * 1992-01-13 1993-07-21 Liu Wan Tien Vertical type cooking fumes exhauster
EP1532907A1 (fr) * 2002-06-10 2005-05-25 Kyushu Electric Power Co., Inc. Rotissoire electrique sans fumee
DE102005004692A1 (de) * 2005-02-02 2006-08-10 Berbel Ablufttechnik Gmbh Dunstabzugshaube mit Ausblasöffnung
CN101126516A (zh) * 2006-08-18 2008-02-20 富士工业株式会社 抽油烟机
DE202011005698U1 (de) * 2011-04-28 2011-09-26 Wilhelm Bruckbauer Kochfeld mit zentraler Absaugung von Kochdünsten nach unten
EP2594852A1 (fr) * 2011-11-17 2013-05-22 Samsung Electronics Co., Ltd Système de cuisson équipé d'appareil de ventilation
DE202013005303U1 (de) * 2013-06-12 2013-06-24 Wilhelm Bruckbauer Kochfeld
EP2772695A2 (fr) * 2014-06-27 2014-09-03 V-Zug AG Hotte aspirante

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3893831A (en) * 1972-10-10 1975-07-08 Doane Mfg Co Grease extractor for kitchen ventilating systems
AT396546B (de) * 1980-06-06 1993-10-25 Sonnleitner Engelbert Ing Dunstabzugshaube od.dgl.
DE102010063843A1 (de) * 2010-12-22 2012-06-28 BSH Bosch und Siemens Hausgeräte GmbH Dunstabzugshaube und Verfahren zum Abscheiden von Aerosolen

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4962694A (en) * 1988-04-15 1990-10-16 Graver James H Grill exhaust system
GB2263334A (en) * 1992-01-13 1993-07-21 Liu Wan Tien Vertical type cooking fumes exhauster
EP1532907A1 (fr) * 2002-06-10 2005-05-25 Kyushu Electric Power Co., Inc. Rotissoire electrique sans fumee
DE102005004692A1 (de) * 2005-02-02 2006-08-10 Berbel Ablufttechnik Gmbh Dunstabzugshaube mit Ausblasöffnung
CN101126516A (zh) * 2006-08-18 2008-02-20 富士工业株式会社 抽油烟机
DE202011005698U1 (de) * 2011-04-28 2011-09-26 Wilhelm Bruckbauer Kochfeld mit zentraler Absaugung von Kochdünsten nach unten
EP2594852A1 (fr) * 2011-11-17 2013-05-22 Samsung Electronics Co., Ltd Système de cuisson équipé d'appareil de ventilation
DE202013005303U1 (de) * 2013-06-12 2013-06-24 Wilhelm Bruckbauer Kochfeld
EP2772695A2 (fr) * 2014-06-27 2014-09-03 V-Zug AG Hotte aspirante

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201700111914A1 (it) * 2017-10-05 2019-04-05 Vittinox S R L Struttura di supporto
EP3557141A1 (fr) * 2018-04-17 2019-10-23 Steel S.R.L. Cuisinière du type autoportant comportant un système d'extraction et de filtration de fumées intégré
WO2019238421A1 (fr) * 2018-06-13 2019-12-19 BSH Hausgeräte GmbH Combinaison d'appareils composée d'appareils ménagers, procédé permettant de faire fonctionner un système de hotte aspirante et produit-programme informatique
EP3809048B1 (fr) * 2019-10-18 2023-08-02 B.S. Service S.r.l. Assemblage d'un système d'extraction et d'une plaque de cuisson
WO2021244847A1 (fr) * 2020-06-05 2021-12-09 Wesco Ag Dispositif d'extraction de vapeur et système de surface de cuisson
CN113237111A (zh) * 2021-05-31 2021-08-10 宁波方太厨具有限公司 一种吸油烟机及其控制方法

Also Published As

Publication number Publication date
EP3045824B1 (fr) 2020-10-14
DE102015200642A1 (de) 2016-07-21

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