EP4569271A1 - Dunstabzugsvorrichtung, kochfeldabzug und verfahren zum betreiben einer dunstabzugsvorrichtung - Google Patents
Dunstabzugsvorrichtung, kochfeldabzug und verfahren zum betreiben einer dunstabzugsvorrichtungInfo
- Publication number
- EP4569271A1 EP4569271A1 EP23761763.4A EP23761763A EP4569271A1 EP 4569271 A1 EP4569271 A1 EP 4569271A1 EP 23761763 A EP23761763 A EP 23761763A EP 4569271 A1 EP4569271 A1 EP 4569271A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fan
- extractor
- hob
- housing
- extractor device
- 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.)
- Pending
Links
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
- Extractor extractor device hob extractor and method for operating an extractor extractor device
- the present invention relates to an extractor device with the features of the preamble of claim 1 as well as a hob extractor with such an extractor device and a method for operating an extractor device.
- the extractor device can form an assembly unit with the hob.
- the hobs have at least one recess through which the cooking fumes and vapors are sucked downwards, below the hob, by means of an exhaust air flow.
- At least one fan generates the exhaust air flow.
- At least one element for separating or filtering grease and oil particles from the sucked-in exhaust air is arranged in the flow direction of the exhaust air flow between the at least one recess and the at least one fan.
- a disadvantage compared to extractor hoods is that these extractor devices are louder when operating the at least one fan and have higher energy consumption.
- the invention is therefore based on the object of specifying an extractor device that works quietly and energy-efficiently. This object is achieved by an extractor device with the features of claim 1 and a hob extractor with such an extractor device and a method for operating an extractor device with the features of claim 21.
- At least one fan with at least one fan impeller preferably a single fan impeller
- a separation or filter device wherein the at least one fan and the separation or filter device are arranged in the housing, are provided.
- the at least one fan is a free-running radial fan and the at least one fan impeller has backward-curved blades, with the housing delimiting an intake space and a pressure space of the at least one fan.
- the installation space gained compared to radial fans with a fan housing can be used for the use of a larger fan impeller, which has a positive effect on the acoustics of the extractor device and energy efficiency.
- backward-curved fan impellers have high efficiency, high power densities and are quiet.
- the separation or filter device is arranged in the suction space and a suction opening of the at least one fan is located in the suction space and decentralized to the separation or filter device.
- the at least one fan and the separator or filter device have a horizontal overlap of 0 to 75%. This arrangement allows installation space to be created for a larger fan impeller.
- the housing has a lid, a base and a Has an intermediate floor, the intermediate floor delimiting the suction chamber from the pressure chamber.
- the suction chamber preferably has a depression in which the separator or filter device is arranged.
- the height of the housing or the extractor device can be kept particularly low, which is advantageous for installation in a kitchen.
- the lid and the intermediate base delimit the suction space, the lid having an opening and the separating or filtering device being arranged below the opening.
- the at least one fan is attached to the bottom of the housing.
- Such an attachment can be designed to be particularly simple. If the at least one fan is possible to be sucked in from below, it is conceivable that the at least one fan is attached to the cover or the intermediate floor of the housing.
- the housing preferably has two outlets, which is advantageous for acoustics.
- both pressure chambers preferably have the same height.
- the intake space of the at least one fan has a constant height outside the depression.
- the ratio of the height of the suction chamber to the height of the pressure chamber is at most 1.2, in particular at most 0.9. This means that the overall height can be kept particularly low, which is an advantage for installation in a kitchen.
- the housing preferably has a width that is in a range of
- the housing preferably has one Total height, which is in a range of 100 to 250 mm.
- the area of width x depth of the housing in relation to the hob area is at least 0.7 and a maximum of 1.
- the at least one fan impeller has a fan impeller diameter of at least 175 mm, in particular at least 200 mm.
- a large fan impeller can generate a significantly higher volume flow than conventionally used radial fans. This improves vapor capture even under extreme cooking conditions.
- Particular preference is given to using fan impellers with a fan impeller diameter of at least 200 mm in combination with a separation unit in which the exhaust air is cleaned by centrifugal force.
- a fan axis, around which the fan impeller rotates, is preferably oriented perpendicular to the plane of the bottom of the housing. But it is also conceivable that the fan axis is inclined.
- the extractor device has a single fan. It is conceivable that the separation or filter device is designed to be rotationally symmetrical and that the exhaust air stream emerging from the separation or filter device flows around it in the intake space by at least 300°.
- a hob extractor with a hob and at least one previously described extractor device is provided.
- the hob preferably has at least one recess, the extractor device being designed to draw off vapor rising above the hob through the at least one recess in an exhaust air flow generated by the at least one fan downwards, below the hob.
- the fan axis of the at least one fan can be aligned vertically or tilted to a hob surface.
- the exhaust air can be sucked in by the at least one fan from above or below. It is advantageous if the hob comprises a glass plate, to the underside of which the housing of the extractor device is attached. However, it is also conceivable that the hob forms the lid of the housing of the extractor device.
- the hob extractor preferably forms an assembly unit which, when fully assembled, can be inserted into a recess in a worktop by a kitchen fitter.
- a method for operating an extractor device for a hob having at least one fan with at least one fan impeller comprises the following steps: a) Control of the at least one fan in a normal level for generating a volume flow through the extractor device (1) in a range of 0 to 650 m 3 /h, the electrical power consumption of the at least one fan being at most 80% of a maximum electrical power consumption, in particular at most 75% is, b) controlling the at least one fan in an intensive level to generate a volume flow through the extractor device in a range of 700 to 750 m 3 /h.
- the method can be intended for both exhaust air operation and recirculation air operation of the extractor device.
- the extractor device is preferably designed as described above.
- Fig. 2 a spatial representation of an intake side of the fan
- Fig. 3 a longitudinal section through the hob extractor
- Fig. 4 a spatial view of the pressure side of the fan
- Fig. 5 a longitudinal section through the fan of the hob extractor, as well
- Fig. 6 a spatial view of part of a hob extractor with two
- the hob extractor comprises a hob (not shown), in particular an induction hob, with a recess which preferably forms a central opening. Through the recess, the vapor rising from the hob or from the cooking vessels located on it is directed downwards, below the hob in an exhaust air flow symbolized by the arrows
- the fan 3 is a free-running radial fan that has a fan impeller 4 with backward-curved blades.
- the term “free-running” is understood to mean that the fan 3 does not have its own outer housing.
- the fan 3 is therefore freely suctioning, freely blowing out and single-flow.
- the blades are curved in the opposite direction to the direction of rotation. It is also conceivable to use a fan impeller with doubly curved blades . Double-curved blades are additionally curved in the axial direction, i.e. over the height. The curvature can vary in the axial and radial directions.
- the fan impeller 4 is closed, i.e. the blades are at least partially covered on the top and bottom. Preferred The fan impeller diameter is at least 175mm, especially between
- the extractor device 1 has a housing 5 in which the fan 3 is placed.
- the housing 5 is rectangular in cross section with a first long side 50 and a second long side 51 as well as a first transverse side 52 and a second transverse side 53.
- the housing 5 also has a cover, not shown, which is perpendicular to the sides and a cover, not shown, which is arranged parallel to it shown floor.
- the housing 5 has a central plane 54 which pierces the long sides 50, 51 in the middle.
- the housing 5 has a width b in a range of 700 mm to 820 mm and a depth t in a range of 400 mm to 550 mm and a total height h from the lid to the bottom in a range of 150 mm to 200 mm. If you look at the area of width bx depth t, this is in relation to the hob area of at least 0.7 and a maximum of 1.
- the housing 5 surrounds the fan 3 and a separation unit 6.
- the separation unit 6 directly adjoins the recess in the flow direction of the exhaust air stream 2.
- the exhaust air stream 2 is divided into two streams and redirected several times.
- the separation unit 6 is cuboid and mirror-symmetrical to a central plane and has two opposite outlets 60,61.
- the two flow channels are formed by metal sheets lying between two side walls 62,63.
- the two side walls 62,63 are closed and oriented parallel to one another. The deflections cause the water drops as well as fat and oil particles in the exhaust air stream 2 to be accelerated outwards by centrifugal force, to conglomerate and to be pressed against the wall of the separation unit 2 and separated.
- the exhaust air is sucked in from above by the fan 3.
- a suction opening 7 of the fan 3 thus points upwards towards the cover of the housing 5.
- the fan axis around which the fan impeller 4 rotates is vertically aligned and congruent with a normal of the cover of the housing 5.
- the housing 5 delimits a suction space 8 of the fan 3, which communicates directly with the suction opening 7 of the fan 3 in terms of flow.
- the suction opening 7 is exposed in the suction space 8.
- the fan 3 itself has no limited suction.
- the suction is limited by the housing 5. When the fan 3 is operated, there is negative pressure in the suction chamber 8 compared to the air pressure surrounding the extractor device 1.
- the separation unit 6 lies with its central plane in the middle of the long sides 50, 51 of the housing 5.
- the central plane of the separation unit 6 is identical to the central plane 54 of the housing 5.
- the fan 3 is arranged decentrally to the separation unit 6.
- the fan 3 is arranged on one side of the central plane 54 of the housing 5. It lies completely on one side of the separation unit 6. When viewed from the transverse side, the separation unit 6 partially covers the fan 3.
- the fan wheel axis lies outside the separation unit 6.
- the separation unit 6 rests with one of the closed side walls 62 on the inside of the second longitudinal side 51 of the housing 5.
- the exhaust air that flows from the outlet 60 near the fan is sucked in directly by the fan 3.
- the other part of the exhaust air flow, which flows from the outlet 61 remote from the fan flows along the closed side wall 63 of the separation unit 6, which is exposed in the intake space 8 and remote from the housing, to the fan 3.
- the separation unit 6 is therefore surrounded by the exhaust air flow 2 in the intake space 8 from three sides.
- the housing 5 is shown in detail in Figure 2.
- the housing 5 has an intermediate floor 9 lying between the lid, not shown, and the floor 55, which is flat and aligned parallel to the lid.
- the intermediate floor 9 separates the suction chamber 8 from a pressure chamber 10, which is also defined by the housing 5.
- the intermediate floor 9 has a cutout 11 which forms a shoulder and a depression 12 extending thereon in the suction chamber 8.
- the depression 12 is defined by the shoulder, the cutout 11 and the bottom 55 of the housing 5.
- the intake chamber 8 thus has two areas with different heights. The height of the suction chamber 8 is constant in both areas.
- the separation unit 6 is arranged in the depression 12.
- the two outlets 60, 61 of the separation unit 6 are thus located in the transverse direction of the housing below the suction opening 7 of the fan 3.
- the depression 12 is rectangular in cross section except for a bevel at the corner near the fan.
- the depression 12 is dimensioned such that the separation unit 6 rests on the shoulder with the closed side wall 63 near the fan.
- the depression 12 is formed in such a way that the exhaust air from the two outlets 60, 61 of the separation unit 6 is guided upwards towards the cover of the housing and thus to the higher suction opening 7 of the fan 3.
- the pressure chamber 10 is formed, in which there is excess pressure compared to the air pressure surrounding the extractor device when the fan 3 is operated.
- the pressure chamber 10 has two outlets 15.
- the outlets 15 have an opening with a connecting flange.
- a first outlet 15 is arranged in plan view on the side near the fan, next to the depression 12. The first outlet 15 is located in the transverse direction at the level of the depression 12 and at the level of the fan wheel 4.
- a second outlet 15 is located on the side of the depression 12 opposite the central plane of the housing.
- the second outlet 15 is also located in the transverse direction at the level of the depression 12 and at the level of the fan wheel 4.
- the two outlets 15 each have a flow cross section of at least 120cm 2 up to 300cm2 .
- FIG 4 shows in detail the exhaust air flow 2 in the pressure chamber 10.
- the fan 3 is designed to blow freely.
- the pressure chamber 10 is essentially U-shaped, with the separation unit, not shown, being arranged between the two legs.
- the fan 3 sits in the bend area between one leg and a transition area connecting the two legs.
- the exhaust air is thus divided into two air streams, which are at an angle of approximately 90° to each other starting from the fan wheel axis.
- the exhaust air in one exhaust air stream reaches the outlet 15 directly, without deflection.
- the exhaust air in the second exhaust air stream is deflected by 90 ° to the second outlet 15. Deflections are flanged to the two outlets 15, which deflect the exhaust air downwards by 90°.
- Odor filters can be connected to the deflections for recirculating air operation, or additional duct elements for air flow.
- FIG. 1 A longitudinal section through the fan 3 is shown in FIG.
- the total height h of the schematically shown housing 5 is 170 mm.
- the housing 5 is therefore particularly compact, which is very user-friendly since the space below the hob extractor is available, for example, for kitchen cupboards.
- the position of the intermediate level 9 is chosen such that there is sufficient cross-sectional area for the exhaust air flow on both the suction and pressure sides.
- the ratio of the height FIA of the suction chamber 8 to the height FID of the pressure chamber 10 is a maximum of 1.2, preferably a maximum of 1.0.
- the housing 5 is attached to the underside of the hob, in particular to the underside of the glass plate of the hob, for example by means of fasteners 16 which are glued to the underside of the glass plate and to which the housing 8 is screwed.
- FIG. 6 shows an exemplary embodiment with two free-running radial fans 3 with backward-curved blades.
- the housing 5 forms a suction chamber 8 and a pressure chamber for the fans 3.
- the two fans 3 are each decentralized Separating device 6 is arranged, wherein the separating device 6 is located in the area of the central plane of the housing 5 and the two fans 3 are each placed on one side of the central plane and symmetrically to it.
- the exhaust air now flows directly to the respective fan 3.
- the separation unit 6 is not flowed around by the exhaust air on the closed side walls.
- Each fan 3 has a pressure chamber, with both pressure chambers being separate areas. In both pressure chambers, the exhaust air flows essentially parallel to the transverse sides of the housing 5.
- Each pressure chamber has an outlet 15.
- the operating range or the volume flows in the normal levels of the extractor hood are in a range from 0 to 650 m 3 /h.
- the electrical power consumption can be reduced in a range of 20 to 50% compared to a conventional forward-curved fan impeller, which is arranged in a screw housing.
- the high efficiency means that the at least one fan can be operated at lower speeds, especially in the normal settings, and thus the acoustic behavior is improved both physically (dB(A)) and psychoacoustically (perception).
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022120186.4A DE102022120186B4 (de) | 2022-08-10 | 2022-08-10 | Dunstabzugsvorrichtung, Kochfeldabzug und Verfahren zum Betreiben einer Dunstabzugsvorrichtung |
| PCT/EP2023/072119 WO2024033452A1 (de) | 2022-08-10 | 2023-08-09 | Dunstabzugsvorrichtung, kochfeldabzug und verfahren zum betreiben einer dunstabzugsvorrichtung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4569271A1 true EP4569271A1 (de) | 2025-06-18 |
Family
ID=87848008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23761763.4A Pending EP4569271A1 (de) | 2022-08-10 | 2023-08-09 | Dunstabzugsvorrichtung, kochfeldabzug und verfahren zum betreiben einer dunstabzugsvorrichtung |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4569271A1 (de) |
| DE (1) | DE102022120186B4 (de) |
| WO (1) | WO2024033452A1 (de) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3120569A1 (de) * | 1981-05-23 | 1982-12-09 | G. Bauknecht Gmbh, 7000 Stuttgart | "kuechendunstabzugshaube" |
| DE29513292U1 (de) * | 1995-08-18 | 1996-12-19 | Gutmann GmbH, 75417 Mühlacker | Dunstabzugselement |
| DE102008041739A1 (de) * | 2008-09-01 | 2010-03-04 | BSH Bosch und Siemens Hausgeräte GmbH | Dunstabzugsvorrichtung |
| DE102019220266B4 (de) * | 2019-12-19 | 2024-09-26 | Wilhelm Bruckbauer | Lüftereinrichtung zum Fördern von Luft |
| DE102020200864A1 (de) * | 2020-01-24 | 2021-07-29 | Wilhelm Bruckbauer | Dunstabzugsvorrichtung zum Abzug von Kochdünsten nach unten |
| DE102021204128A1 (de) | 2021-04-26 | 2022-10-27 | BSH Hausgeräte GmbH | Kombinationsgerät mit Kochfeld und Dunstabzugsvorrichtung |
-
2022
- 2022-08-10 DE DE102022120186.4A patent/DE102022120186B4/de active Active
-
2023
- 2023-08-09 WO PCT/EP2023/072119 patent/WO2024033452A1/de not_active Ceased
- 2023-08-09 EP EP23761763.4A patent/EP4569271A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE102022120186B4 (de) | 2024-08-14 |
| WO2024033452A1 (de) | 2024-02-15 |
| DE102022120186A1 (de) | 2024-02-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3338031B1 (de) | Kombinationsgerät mit kochfeld und dunstabzugsvorrichtung | |
| DE202019106084U1 (de) | Kochfläche mit Downdraft-Dunstabzugshaube | |
| EP3338028A1 (de) | Kombinationsgerät mit kochfeld und dunstabzugsvorrichtung | |
| EP3914864B1 (de) | Kombinationsgerät | |
| DE102012207850B4 (de) | Absaugvorrichtung zum Absaugen von Luft von einem Herd | |
| EP3136004A1 (de) | Kombinationsgerät mit kochfeld und dunstabzugsvorrichtung | |
| DE202020100040U1 (de) | Ansaugvorrichtung für eine Dunstabzugshaube für Privathaushalte | |
| WO2022228910A1 (de) | Gebläsegehäuse für ein gebläse einer dunstabzugsvorrichtung und gebläse für dunstabzugsvorrichtung | |
| DE202022002854U1 (de) | Kochfeldabzug | |
| EP4397914A1 (de) | Kochfeldabzug und verfahren zum betreiben eines kochfeldabzugs | |
| DE102022120186B4 (de) | Dunstabzugsvorrichtung, Kochfeldabzug und Verfahren zum Betreiben einer Dunstabzugsvorrichtung | |
| WO2024033453A1 (de) | Kochfeldabzug und verfahren zum betreiben eines kochfeldabzugs | |
| EP4083517A1 (de) | Kombinationsgerät mit kochfeld und dunstabzugsvorrichtung | |
| EP2119971A2 (de) | Dunstabzugshaube sowie Filter für Dunstabzugshaube | |
| DE102020215186A1 (de) | Kochfeldvorrichtung | |
| EP3421806B1 (de) | Gebläse | |
| EP4328495A1 (de) | In ein kochfeld baulich integrierbare dunstabzugsvorrichtung und kochfeld | |
| BE1031697B1 (de) | Dunstabzugseinrichtung, Deckenlüftersystem und Verfahren zum Betreiben | |
| DE102021114109A1 (de) | Downdraftlüfter und Verfahren zur Wartung | |
| EP4298384B1 (de) | Dunstabzugsvorrichtung | |
| EP4328497B1 (de) | In ein kochfeld baulich integrierbare dunstabzugsvorrichtung und kochfeld | |
| EP3653940A1 (de) | Dunstabzugshaube | |
| EP4328496B1 (de) | In ein kochfeld baulich integrierbare dunstabzugsvorrichtung und kochfeld | |
| EP3770510B1 (de) | Gebläse für eine dunstabzugsvorrichtung und kombinationsgerät | |
| DE102022133876B4 (de) | Kochvorrichtung |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20250307 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |