EP3475622B1 - Muldenlüfter mit einem einsatz - Google Patents

Muldenlüfter mit einem einsatz Download PDF

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Publication number
EP3475622B1
EP3475622B1 EP17732422.5A EP17732422A EP3475622B1 EP 3475622 B1 EP3475622 B1 EP 3475622B1 EP 17732422 A EP17732422 A EP 17732422A EP 3475622 B1 EP3475622 B1 EP 3475622B1
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EP
European Patent Office
Prior art keywords
flow
collecting element
filter element
collecting
downdraft
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Application number
EP17732422.5A
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German (de)
English (en)
French (fr)
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EP3475622A1 (de
Inventor
Walter Könneker
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Individual
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Individual
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Publication of EP3475622A1 publication Critical patent/EP3475622A1/de
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    • 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
    • F24C15/2021—Arrangement or mounting of control or safety systems
    • 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 downdraft extractor with a removable insert. Furthermore, the invention relates to a hob system with such a downdraft fan.
  • a fume hood system is known, by means of which cooking fumes are drawn off downwards.
  • Such systems are also referred to as hob ventilators or downdraft systems.
  • Grease filter inserts are also known from DE 20 2009 008 286 U1 , the US 4,962,694A , the US 2012/0247345 A1 , the US 6,455,818 B1 and the DE 20 2011 005 698 U1 .
  • the core of the invention consists in designing the removable insert of the downdraft fan with a filter element and a collecting element for absorbing liquid, the collecting element having at least one wall which acts as a flow guide surface for deflection a cooking vapor stream is used.
  • the filter element and the collecting element are designed to be removable.
  • the filter element and the collecting element are designed so that they can be joined together. This is not mandatory.
  • the filter element and the collecting element can also be designed in one piece. They are designed in such a way that, when inserted, they rest against one another in the housing of the downdraft fan, in particular in the flow duct.
  • the collecting element forms part of a flow channel for the flow of cooking vapors, particularly when in use.
  • it forms part of a transition from one or more cooking vapor inlet openings to a channel for discharging cooking vapors.
  • the at least one inlet opening can be arranged in particular in the area of a cooktop level. In particular, it can be round, in particular circular, or rectangular.
  • the wall of the collecting element serving as a flow guiding surface leads in particular to a deflection of the flow of cooking vapors by approximately 90°, in particular by at least 10°, in particular by at least 30°, in particular by at least 45°, in particular by at least 60°.
  • the deflection of the cooking vapor flow by means of the serving as a flow guide surface can be defined here in particular by the angle which encloses an outflow-side tangential plane on the deflection-outside inner wall of the collecting element with an inflow-side tangential plane on the inner wall of the collecting element.
  • the channel for discharging cooking vapors can in particular be a flat channel, in particular with an aspect ratio of width to height of the flat channel of at least 2:1, in particular at least 3:1, in particular at least 5:1.
  • the aspect ratio is usually less than 100:1, in particular less than 50:1.
  • the flat channel has in particular a flow cross-section of at least 100 cm 2 , in particular at least 150 cm 2 , in particular at least 200 cm 2 , in particular at least 250 cm 2 , in particular at least 300 cm 2 .
  • the flow cross section is in particular at most 1000 cm 2 .
  • the design of the collecting element with at least one wall which serves as a flow guide surface for deflecting the flow of cooking fumes, improves its flow-mechanical properties in particular. This contributes to a more efficient extraction of the cooking vapors and to a reduced noise level.
  • the insert can be removed as a whole.
  • the filter element and the collecting element can in particular be firmly connected to one another. In particular, it is possible to form the collecting element in one piece with the filter element.
  • the filter element can be removed separately from the collecting element.
  • the filter element has a handle, for example in the form of a recessed grip.
  • the handle can also be arranged in a wall of the filter element so that it can be folded out or pulled out.
  • the catching element has a handle. This makes it easier to remove the collecting element.
  • the handle can be designed to correspond to the handle of the filter element.
  • the wall of the collecting element serving as a flow guide surface is designed to be bent or curved.
  • the collecting element can also be designed obliquely, at least in sections. This should be understood to mean that, when the collecting element is in the inserted state, it is not aligned parallel to a vertical plane or parallel to a horizontal plane, at least in sections. In particular, it has at least one area which encloses an angle in the range from 30° to 60° with a vertical plane. In the case of a curved design, this specification relates to a tangential plane on the inside of the wall serving as a flow guide surface.
  • the wall can also be designed to be flat in sections.
  • the insert is designed in such a way that, when the insert is in the inserted state, it encloses an angle of at least 3°, in particular at least 5°, in particular at least 10°, with the horizontal at least in certain areas.
  • the course of the wall which serves as a flow control surface, can be described by a continuously differentiable function.
  • the wall is preferably designed without edges.
  • the wall is in particular an outer wall of the flow channel.
  • the wall of the collecting element which serves as a flow guide surface for deflecting the flow of cooking fumes, can in particular transition into a wall of the filter element essentially without edges.
  • the filter element and the collecting element can in particular be joined together in such a way that a wall of the filter element and a wall of the collecting element form an essentially edge-free flow guide surface for deflecting the flow of cooking fumes.
  • flow-guiding means in particular in the form of one or more flow-guiding elements, can be arranged in the area of the wall serving as a flow-guiding surface for deflecting the flow of cooking vapors, in particular in the transition area from the filter element to the collecting element. These can also be used to create a targeted turbulence in the flow of cooking fumes.
  • All of the walls of the filter element and of the collecting element that define the flow cross section of the insert are preferably designed accordingly.
  • the structural design of the housing of the downdraft fan is simplified by the wall of the insert acting as a flow guide surface.
  • the housing can in particular be rectangular. Flow losses caused by this, especially in the corner areas of the housing, are avoided by using it. By using it, in particular the wall of the same serving as a flow guide surface, the formation of dead spaces in the housing of the downdraft fan can be reliably prevented.
  • the collecting element and/or the filter element is designed in such a way that in the area of the inner radius of the flow channel they form a substantially edge-free continuation of a horizontal flow section.
  • the flow channel has no sharp-edged deflections, in particular no sharp-edged 90° deflections.
  • a deflection with a radius of curvature of less than 1 mm is referred to as sharp-edged.
  • the effective flow area, apart from specially provided turbulence means, is essentially free of edges, in particular free of undesirable sharp-edged deflection areas.
  • the insert is designed in particular in such a way that the areas of the insert that serve as flow guide surfaces for the flow of cooking vapors, in particular the walls of the collecting element, which serve as flow guide surfaces for deflecting the flow of cooking vapors, have a radius of curvature of at least 1 cm, in particular at least 2 cm.
  • the collecting element is essentially free of edges, in particular free of dead space.
  • the entire insert is preferably designed to be essentially free of dead space. In particular, it has a flow-optimized design.
  • the filter element and/or the collecting element is designed to be self-centering. This means that when it is inserted into the downdraft extractor, it automatically slides into the intended end position. This can be achieved, for example, with the aid of guide means on the outside of the collecting element and/or the filter element, which interact with suitable guide means in the housing of the downdraft fan, in particular on the inside of the opening for inserting the insert.
  • the guide means can be designed in the form of grooves, projections, guide links and the like.
  • a self-centering design of the filter element and/or the collecting element can also be supported by a suitable arrangement of the respective center of gravity of these elements.
  • the orientation of these elements can be influenced when inserting them into the downdraft fan.
  • the filter element and the collecting element are designed in such a way that when they are inserted into the downdraft fan, they automatically slide into the intended assembled relative position of these two elements to one another.
  • Suitable guide means can also be provided for this on the filter element and/or on the collecting element.
  • the guide means on the filter element and/or on the collecting element are in particular designed to be complementary to one another, in particular to engage in one another. In particular, they can be mechanical guide means.
  • the assumption of the intended relative position of the filter element and the collecting element can also be supported by alternative guide means, for example by magnetic guide means.
  • the exact relative position of the filter element and the collecting element in the inserted state is specified solely by their interaction with the housing of the downdraft fan. They slide into the designated positions when inserted into the downdraft extractor. When used, they rest against one another. In the inserted state, they rest against one another in particular in a form-fitting manner. They have a substantially identical inner border and/or a substantially identical outer border, particularly in the area in which they abut one another when inserted.
  • the filter element and/or the collecting element is designed asymmetrically.
  • it has purposefully asymmetrical guide means.
  • the filter element and/or the collecting element can be designed essentially symmetrically to a central plane by guiding means.
  • the asymmetrical design of the filter element and/or the collecting element can ensure that the respective element is not rotated through 180°, but can only be used in the downdraft ventilator with the correct intended orientation.
  • the filter element is designed in two or more parts.
  • it has a frame and one or more filter layers arranged on it.
  • the frame is preferably made of plastic. It can also be made of metal, in particular aluminum or stainless steel. It is preferably made of a corrosion-resistant, moisture-resistant and heat-resistant material.
  • the filter layers are preferably made of stainless steel.
  • they can be designed as double layers of a stainless steel mesh.
  • one, two, three, four, five, six, seven, eight or more such double layers can be provided.
  • the filter layers have a curved configuration. This increases the total surface area of the filter that can be arranged in the available width of the filter element.
  • the curvature of the filter layers has a radius of curvature of less than 100 cm, in particular less than 50 cm, in particular less than 30 cm, in particular less than 20 cm.
  • Different filter layers can have different radii of curvature.
  • the filter layers can in particular be arranged concentrically be.
  • the upper filter layers can have a smaller radius of curvature than the lower filter layers.
  • the filter layers can cover identical angular ranges. In other words, they can have different extents in the circumferential direction.
  • the filter layers are curved, in particular, around a horizontally aligned axis.
  • the filter element is preferably designed to be dishwasher safe. This considerably simplifies the cleaning of the same.
  • the collecting element is made of plastic at least in regions, in particular completely. This leads to a particularly low weight of the collecting element.
  • the collecting element is particularly resistant to moisture and heat. In particular, it is designed to be dishwasher safe.
  • the collecting element In the area on the flow outlet side, the collecting element has a cooking vapor outlet opening. When the insert is in place, this is followed by a cooking fume removal duct.
  • the transition from the collecting element to the cooking fumes discharge channel is preferably designed to be essentially edge-free. In particular, the transition has such a flow-optimized shape that turbulence in the flow of cooking vapors is reduced in this area, in particular largely avoided.
  • the collecting element at the transition to the cooking vapor discharge channel in particular in the area of the cooking vapor outlet opening, a tear-off edge.
  • the tear-off edge serves in particular to generate a targeted turbulence of the flow of cooking vapors in this area.
  • the collecting element is designed as a collecting trough or comprises at least one corresponding trough or at least one trough-shaped area.
  • the collection element in particular the collection tray, has a collection volume of at least 50 ml, in particular at least 100 ml, in particular at least 200 ml, in particular at least 300 ml, in particular at least 500 ml, in particular at least 700 ml.
  • the collection volume is usually less than 2000 ml, in particular less than 1000 ml.
  • the collecting element forms a transition piece between the filter element and the downstream channel for discharging the cooking vapor flow.
  • the transition from the filter element to the collecting element is essentially free of edges.
  • the collecting trough can have a cover which is at least partially liquid-permeable.
  • the cover can serve in particular as a flow guide element.
  • the flow of cooking vapors through the collecting element can be further improved.
  • openings, in particular holes or slots can be provided in the cover.
  • At least one signaling element is provided on the filter element and/or on the collecting element.
  • This can be a mechanical, electrical or magnetic signaling element.
  • the at least one signaling element interacts with a matching receiving device in the hob ventilator. This enables detection, by means of which a signal can be generated depending on whether the insert or its components are correctly inserted into the downdraft fan or not.
  • This signal can be forwarded to a control device of the downdraft fan via a signal connection.
  • provision can also be made for a signal, in particular an optical or acoustic signal, to be output in the event of an incorrectly inserted filter and/or collecting element.
  • one or more sensors can be provided in the collecting element and/or in the filter element.
  • the operating status of these elements can be monitored with the aid of such sensors.
  • a sensor in the collecting element it is possible in particular to detect the amount of liquid in the collecting element or if a predetermined amount of liquid in the collecting element is exceeded.
  • its loading status can be determined or record its remaining capacity, so that it can be recognized when the filter should be cleaned.
  • the downdraft fan has improved cleaning options.
  • it has improved flow-mechanical properties in particular.
  • the hob system can in particular be an assembly unit. With such a mounting unit, the hobs and the downdraft fan are integrated into a single, common built-in unit.
  • the assembly unit has a particularly compact structure. In particular, it has a total installation height in the range of less than 30 cm, in particular less than 25 cm, in particular less than 20 cm, in particular less than 18 cm, in particular less than 16 cm, in particular less than 15 cm.
  • the assembly unit can be delivered fully assembled. It can be inserted into a recess in a worktop.
  • the base cabinet provided in the area of the assembly unit does not have to be modified. All you have to do is remove the top drawer and replace it with a panel.
  • the hob system 1 includes at least one hob 2 1 Hob system 1 shown as an example, two hobs 2 are provided.
  • the hobs 2 can essentially be any hobs. In particular, it can be induction hobs, gas hobs, Tepan Yaki hobs, hobs for a wok, electric hobs or hotplates, grills or other hobs.
  • control knobs 3 are provided for operating the hobs 2 .
  • Operation by means of touch-sensitive sensors, which in particular can be integrated into the hob 2 is also possible.
  • Operation via a separate operating module is also conceivable.
  • the hobs 2 can be non-autonomous, ie without their own control electronics.
  • the construction of the hobs 2 can be simplified.
  • it can be at most 10 cm, in particular at most 6 cm, in particular at most 5 cm, in particular at most 4 cm, in particular at most 3 cm, in particular at most 2 cm.
  • the hob system 1 also includes a downdraft fan 4.
  • the downdraft fan 4 forms a device for extracting cooking vapors.
  • the downdraft fan 4 is arranged between the two hobs 2 . It can also be arranged to the side of the hobs 2 or in the area behind the hobs 2 .
  • the cooking vapor inlet opening 5 can have a round, in particular a circular, cooking vapor inlet opening 5 .
  • the cooking vapor inlet opening 5 is elongate, in particular rectangular.
  • the cooking vapor inlet opening 5 has in particular an aspect ratio of at least 2:1, in particular at least 3:1, in particular at least 5:1, in particular at least 10:1.
  • the aspect ratio of the cooking vapor inlet opening 5 is usually at most 100:1, in particular at most 50:1.
  • cooking vapor inlet openings 5 can also be provided.
  • the cooking vapor inlet opening 5 can be reversibly closed, in particular by means of a closure element 6 .
  • a closure element 6 In the case of several cooking fumes inlet openings 5, these can each separately, d. H. be reversibly closed independently of one another by means of closure elements 6 .
  • a control knob 7 is provided to operate the downdraft fan 4 . Operation using a touch-sensitive sensor is also possible.
  • the downdraft fan 4 is arranged in particular in the area of a hob level 8 . It is used to extract cooking vapors from the area above the hob level 8 to an area below the hob level 8. It is therefore also referred to as a downdraft system.
  • the cooking vapor inlet opening 5 is preferably arranged in a fixed position relative to the plane 8 of the hob.
  • the area of the hob fan 4 with the cooking vapor inlet opening 5 can be displaced in the direction perpendicular to the plane 8 of the cooktop.
  • the risk of liquid inadvertently penetrating into the downdraft fan 4, particularly if liquids boil over, can be significantly reduced.
  • the cooking vapor inlet opening 5 is designed in such a way that it can be shifted to a position a few millimeters above the plane of the hob when the downdraft fan 4 is in operation. In this case, it can be arranged flush with the cooktop plane 8 when the downdraft fan 4 is switched off.
  • the hob system 1 is of modular design. In this case, essentially freely selectable hobs 2 can be flexibly combined with one or more of the downdraft fans 4 .
  • the hob system 1 can also be designed as an assembly unit.
  • one or more hobs 2 are integrated with one or more downdraft fans 4 into a single system. They are particularly in arranged in a common housing. This only has to be inserted into a recess in a worktop 9 for assembly.
  • compartments, in particular drawers 10 of a kitchen base unit 11, can be used essentially without restriction.
  • the kitchen base cabinet 11 generally forms a piece of kitchen furniture.
  • the hob system 1, in particular the downdraft fan 4 can be integrated into the kitchen furniture. In particular, they can be integrated into the kitchen furniture at the factory.
  • the assembly unit in particular the downdraft fan 4, preferably has an overall height h in the range of less than 30 cm, in particular less than 25 cm, in particular less than 20 cm, in particular less than 18 cm, in particular less than 16 cm, in particular less than 15 cm on.
  • the mounting unit requires no more space under the worktop 9 for installation than a normal cutlery drawer.
  • the downdraft fan 4 includes an insert 12.
  • An alternative of the insert 12 is an example in the 2 and 3 shown.
  • the insert 12 is designed in several parts. It comprises a filter element 13 and a collecting element 14.
  • the filter element 13 and the collecting element 14 can be separated from one another. In the 4 the filter element 13 is shown without the collecting element 14 . In the figure 5 the collecting element 14 is shown without the filter element 13 .
  • the filter element 13 can be removed from the downdraft fan 4 . In particular, it can be removed from the hob ventilator 4 independently of the collecting element 14 .
  • the filter element 13 has a handle 15 to make it easier to remove.
  • the handle 15 can be in the form of a recessed grip. In particular, it is designed in an ergonomically favorable manner, in particular adapted to the usual size of fingers on a human hand.
  • the filter element itself is designed in two parts. It has a frame 16 .
  • the frame 16 is dimensionally stable. In particular, it can be made of plastic. According to an alternative, the frame 16 is made of metal, in particular aluminum or stainless steel. Other materials, such as carbon, are also possible.
  • the frame 16 is in particular made of a moisture and heat resistant material.
  • the filter element 13 includes the actual filter 17.
  • the filter 17 includes several layers of filter fabric.
  • the filter layers are preferably made of stainless steel.
  • the filter 17 can in particular have several, in particular at least three, in particular at least five, in particular eight or more layers, in particular double layers.
  • the layers can have a stainless steel mesh. In particular, they can consist of a double-sided knitted grid.
  • the filter 17 is in particular a grease filter.
  • the downdraft fan 4 in particular the system comprising the removable components of the downdraft fan 4, in particular the system comprising the filter 17, the collecting element 14 and a collecting tray 28 which may be present, has a grease separation degree of more than 45%, in particular more than 55%, in particular more than 65%, in particular more than 75%, in particular more than 85%, in particular more than 95%. This information refers to the degree of grease separation according to DIN EN 61591.
  • the filter 17, in particular the filter layers, are curved.
  • the filter layers are curved in particular relative to a horizontally aligned axis. In particular, they have a rectilinear course in a horizontal section.
  • a flow-optimized construction of the filter element 13 can be achieved by a curved shape.
  • the filter element 13 is dishwasher safe. For cleaning, it can simply be removed from the downdraft extractor 4 and placed in the dishwasher.
  • a signal transmitter 18 is arranged on the frame 16 .
  • a magnet is used as the signal generator 18 .
  • the signal generator 18 can also be designed, for example, as an electrical contact or mechanically, for example as a projection, in particular in the form of a latching lug.
  • a suitable sensor element in the downdraft fan 4 can be used with the aid of the signal generator 18 to detect whether the filter element 13 is correctly inserted into the downdraft fan 4 or not.
  • the corresponding sensor is preferably in a signal-transmitting connection with a control device for the downdraft fan 4, not shown in the figures.
  • the collecting element 14 can also be removed from the downdraft fan 4 .
  • the collecting element 14 has a handle 19 for this purpose. With regard to its design, reference is made to the description of the handle 15 of the filter element 13 .
  • the collecting element 14 is designed to match the filter element 13 .
  • the two elements 13, 14 can in particular be plugged or laid into or onto one another in a form-fitting manner. When plugged together or in abutting state, they have, in particular, an inner wall 20 that is configured essentially without edges.
  • the inner wall 20 is curved. It forms a flow control surface for deflecting the flow of cooking fumes.
  • the flow guide surface is essentially edge-free, preferably smooth.
  • the course of the flow control surface in particular its cross section relative to a vertical plane, in particular relative to a vertically aligned center plane of the downdraft fan 4, can be described in particular by a continuous function, in particular a differentiable function, in particular by a continuously differentiable function.
  • the flow directing surface can have a constant curvature.
  • the flow guide surface can also have a curvature that varies in the direction of flow. In particular, it can be designed to be essentially planar in an edge region facing the cooking vapor inlet opening 5 . In particular, it can be designed to be essentially planar in an edge region facing the cooking vapor outlet opening 22 . In this case, it is curved only in the area between these edge areas.
  • the collecting element 14 serves to absorb liquids. For this purpose, it has a collecting trough 21 or at least a trough-like area.
  • the collection tray 21 has a collection volume of at least 50 ml, in particular at least 100 ml, in particular at least 200 ml, in particular at least 300 ml, in particular at least 500 ml, in particular at least 700 ml.
  • the collecting element 14 is made of a dimensionally stable material.
  • the collecting element 14 is in particular made of plastic. It can also be made of metal, in particular aluminum, or stainless steel.
  • the collecting element 14 can also be made from other materials, for example carbon, or can include such materials.
  • the collecting element 14 is made exclusively of moisture-resistant materials. It is heat-resistant in particular for temperatures up to 75°C, in particular up to 80°C, in particular up to 95°C, in particular at least 100°C.
  • the collecting element 14 has a cooking vapor outlet opening 22 .
  • a duct 23 for removal adjoins the cooking vapor outlet opening 22 from cooking fumes.
  • the transition from the collecting element 14 to the channel 23 is essentially free of edges. It is preferably designed to be flow-optimized in such a way that, apart from targeted dead space and/or turbulence areas, an essentially turbulence-free flow of cooking vapors is made possible.
  • the flow cross section can initially increase. After a deflection, the flow cross section decreases in an adjoining area.
  • the flow-mechanical properties of the downdraft fan 4, in particular of the insert 12, could be improved by a rounded design of the inner and/or outer wall delimiting the flow area, in particular in the area of the deflection, in particular by avoiding kinks in this area. In particular, it was possible to reduce flow losses.
  • the collecting element 14 rests against a bottom wall 24 of the hob fan 4, in particular of the duct 23 for discharging the cooking fumes.
  • the collecting element 14 can be removed upwards, in particular vertically upwards, in particular after the filter element 13 has been removed from the downdraft fan 4 .
  • the collecting element 14 has a flow-optimized shape. In particular, it is essentially edge-free on its inner side facing the flow area.
  • the collecting element 14, in particular the collecting pan 21, can lie flush in a collecting pan 28 in the channel 23. In particular, it rests flush on the collecting tray 28 at least in certain areas. As a result, an air flow in the area between the collecting tray 21 of the Filter element 13 and the drip pan 28 in the channel 23 are avoided.
  • the catching element 14 is designed in such a way that the position of its center of mass 25 relative to the handle 19 favors, in particular brings about, a pivoting of the catching element 14 about a horizontally running axis, which simplifies the insertion of the catching element 14 into the downdraft fan 4.
  • the center of mass 25 of the catching element 14 is arranged in particular in such a way relative to the handle 19 that the horizontal extension of the catching element 14 when it is hung on the handle 19 is reduced, in particular minimized, compared to the maximum horizontal extension in the correctly inserted state .
  • the catching element 14 is automatically pivoted. This makes it easier to remove the collecting element 14 .
  • the catching element 14 can be provided with guide means, which lead to a self-centering design of the catching element 14 when it is inserted into the downdraft fan.
  • guide means which lead to a self-centering design of the catching element 14 when it is inserted into the downdraft fan.
  • guide means For example, one or more grooves, webs, projections, bulges or recesses can serve as guide means.
  • the filter element 13 and the collecting element 14 can in particular be plugged together.
  • they have connecting means 26 adapted to one another in the form of projections or recesses. This is not mandatory. Special connecting means can also be dispensed with.
  • the filter element 13 and the collecting element 14 can, but do not have to, be latchable with one another. They can also rest loosely on one another in the inserted state. in the abutting, in particular when they are plugged together, the filter element 13 and the collecting element 14 form an essentially edge-free, continuous, in particular smooth surface.
  • the collecting element 14 and the filter element 13 are preferably designed in such a way that they automatically come together in the correct relative positioning when they are inserted into the downdraft fan 4 .
  • guide means in particular in the form of recesses, in particular guide grooves and projections interacting therewith, can be provided on the outer walls of the filter element 13 and the collecting element 14 or on the inside of the downdraft fan 4 .
  • the collecting element 14 is arranged downstream of the filter element 13 in the flow direction 27 of the flow of cooking vapors in the downdraft fan 4 . Leaking liquids and fat can thus be collected in the flow direction 27 after the filter element 13 in the collecting element 14 .
  • a collecting tray 28, in particular for collecting liquids, is preferably formed in the channel 23 itself for discharging the cooking fumes.
  • a liquid barrier in the form of a nose 29 protruding upwards is formed in the channel 23 .
  • the drip tray 28 can be detachable or removable. In particular, it can be latched to the channel 23 , in particular to the rest of the channel 23 . In particular, it is on or in the channel 23 attached that this is liquid-tightly closed by the drip tray 28 to the outside.
  • the drip tray 28 can remain in the extraction guide, even if the collecting element 14 is removed with the drip tray 21 from the downdraft fan 4.
  • the drip pan 28, which is also referred to as a maintenance pan, is usually only removed for maintenance work on the downdraft fan 4 or in the event of heavy soiling.
  • the insert 12 When inserted, the insert 12 forms part of a duct for deflecting and discharging the flow of cooking fumes.
  • the insert 12 has in particular a flow-guiding function.
  • the inner wall 20 serves as a flow guide surface for the flow of cooking fumes.
  • the flow of the cooking vapors is significantly improved by their design, in particular by the curved, essentially edge-free design. Undesirable turbulence and, in particular, dead spaces are largely avoided.
  • the inner wall 20 can be provided with a structure to further improve the flow conditions in the downdraft fan 4 .
  • the cooking vapor entry device 41 has an overall height h of about 15 cm.
  • the overall height h of the cooking vapor entry device 41 is in particular at most 30 cm, in particular at most 20 cm, in particular at most 15 cm. It is preferably at least 5 cm, in particular at least 10 cm.
  • it therefore has a compact design, but on the other hand it is optimized with regard to its flow-mechanical properties.
  • it is designed in such a way that in the area of the hob level 8 next to the cooking vapor entry device 41 hobs 2 can be arranged in the worktop 9 without them colliding with components of the hob ventilator 4, which are arranged downstream of the cooking vapor entry device 41 in the direction of flow 27.
  • a flow-guiding means 31 in particular in the form of a flow-guiding element or flow-guiding plate, is provided on the frame 16 of the filter element 13 on the deflection outside of the flow direction 27 of the flow of cooking vapors.
  • the flow-guiding means 31 is in particular aligned essentially parallel to a further flow-guiding means 32 in the area of the inner radius r of the deflection area for the flow of cooking vapors.
  • the flow-guiding means 32 is continued in a flow-guiding surface 33 of the collecting element 14.
  • a flow-guiding element, in particular a flow-guiding plate, preferably serves as the flow-guiding means 32.
  • the flow-guiding means 31, 32 are made of the same material as the frame 16 of the filter element 13 and/or the collecting pan 21. They are made of plastic in particular.
  • the flow guide surface 33 forms a transition, in particular a rounded transition, in particular a substantially edge-free transition, to the channel 23.
  • the flow guide means 32 and the flow guide surface 33 prevent the flow of cooking vapors from being deflected around a sharp edge on the inside of the deflection area. As a result, the flow-mechanical properties of the downdraft fan 4 are significantly improved.
  • the deflection area for the flow of cooking vapors has in particular a radius of curvature of at least 1 cm, in particular at least 2 cm, in particular at least 3 cm, in particular at least 5 cm.
  • the collecting pan 21 of the collecting element 14 has a bottom surface 34 which is designed to rise slightly in the direction of the cooking vapor outlet opening 22 .
  • the bottom surface 34 has, in particular, an angle b in the range from 3° to 30° with a horizontal plane 35 .
  • the angle b is in particular at least 5°, in particular at least 10°. In particular, it is at most 20°, in particular at most 15°.
  • the inclined design of the bottom surface 34 ensures that liquids that collect in the collecting pan 21 collect in a rear area 38 of the collecting pan 21 .
  • the area on the bottom of the collecting tray 21 opposite the cooking vapor outlet opening 22 is referred to as the rear area 38 .
  • the rear area 38 forms a collection area for the liquids to be collected. In addition, it forms a catchment area for fat running out of the fat filter 17 .
  • the bottom wall 24 of the collecting trough 28 is also designed to be inclined relative to the horizontal plane 35, at least in certain areas.
  • the bottom surface 34 of the collecting pan 21 is in particular at least partially flush with the bottom wall 24 of the collecting pan 28 .
  • the bottom surface 34 of the collecting pan 21 has a tear-off edge 42 in the region of the cooking vapor outlet opening 22 .
  • the tear-off edge 42 is at a distance from the nose 29 of the drip pan 28 .
  • the inclination of the bottom surface 34 can ensure that the flow of cooking vapors is efficiently directed via the nose 29 into the adjoining channel 23 .
  • Heavier particles, for example fat droplets, can remain upstream of the nose 29 and collect in the collecting pan 28 .
  • the nose 29 reliably prevents particles and/or liquids that have accumulated in the collecting tray 28 from being sucked into the channel 23 by the flow of cooking vapors.
  • the handle 15 of the filter element 13 is arranged outside a flow area 36 of the flow of cooking fumes.
  • the flow area 36 extends vertically downwards, in particular as an extension of the cooking vapor inlet opening 5, in particular perpendicular to the horizontal plane 35. Arranging the handle 15 outside of the flow area 36 can prevent the handle 15 from causing turbulence in the cooking vapor flow.
  • a hook 37 is arranged on the flow guide element 31 .
  • the hook 37 is arranged on the side of the flow guide element 31 facing the deflection area. It is used for the targeted generation of turbulence in the flow of cooking vapors. In other words, it forms a means for generating turbulence.
  • Such turbulence can be used to increase the degree of fat separation in the insert 12 .
  • the degree of fat separation in the collecting element 14 can be increased by means of the hook 37 .
  • Corresponding hooks 38, 39 are provided on the inside of the deflection area, in particular on the flow guide surface 33, and in the area of the end of the bottom surface 34 facing the cooking vapor outlet opening 22.
  • the collecting element 14 is thus provided with a plurality of turbulence-generating means.
  • the filter element 13 and the collecting element 14 each form separate or separable components of the insert 12. This is not absolutely necessary.
  • the collecting element 14 can in particular also be designed in one piece with the filter element 13 . This allows the insert 12 to be designed in a manner that is particularly favorable in terms of flow mechanics. In this case, the insert 12 forms a filter-collecting insert.
  • the alternative shown includes the insert 12 only the filter element 13, but no collecting element 14.
  • the filter element 13 lies directly on the collecting tray 28.
  • the flow guide element 32 is extended in such a way that it forms the transition to the channel 23 on the inside of the flow.
  • it is designed in such a way that it is on the flow guide surface 33, which in accordance with the alternative 9 Is part of the drip tray 21 includes.
  • the bottom wall 24 of the drip tray 28 substantially flat.
  • the bottom surface 34 of the catch pan 21 can in particular bear against the nose 29 in a substantially tight manner, in particular in a liquid-tight manner. This prevents liquid, in particular fat, from penetrating into the area between the collecting pan 21 and the collecting pan 28 .
  • FIG 12 a further alternative of the collecting element 14 is shown.
  • the embodiment essentially corresponds to that in FIG figure 5 shown, the description of which is hereby referred to.
  • flow guide elements are provided in the collecting element 14 in the region of the cooking vapor outlet opening.
  • vertically aligned fins 43 serve as flow guide elements.
  • two fins 43 are provided. A different number of fins is also possible.
  • the fins 43 lead to an improvement in the flow properties and, on the other hand, to a mechanical stabilization of the collecting element 14, in particular its bottom surface 34.
  • the fins 43 are preferably arranged aligned in the direction of flow with corresponding flow guide elements in the channel 23 adjoining the collecting element 14 .
  • the stability of the channel 23 can be improved by means of appropriate flow guide elements.
  • the fins 43 have a flow-optimized shape. In particular, they are wider in the area of the bottom surface 34 than in the area of the upper limit of the cooking vapor outlet opening 22.
  • the insert 12 with the filter element 13 and the collecting element 14 has a very low weight overall.
  • the total weight of the insert 12 can in particular be less than 3 kg, in particular less than 2 kg, in particular less than 1 kg.
  • the weight of the collecting element 14 can be less than 1 kg, in particular less than 500 g, in particular less than 300 g. This makes it easier to remove the insert, in particular the collecting element 14, from the downdraft fan 4. In particular, the risk of causing damage by accidentally dropping the catching element 14 is reduced.
  • the collecting element 14 and the filter element 13 When the collecting element 14 and the filter element 13 are inserted into the downdraft fan 4, they automatically slide into the positions provided for this purpose. This is called the self-centering property. This is supported or made possible by a corresponding design of the housing of the downdraft fan 4, in particular in the area of the cooking vapor inlet opening 5 and/or in the area of the collecting pan 28.
  • guide means in particular can be provided in the housing of the downdraft fan 4, which interact with these elements.
  • the collecting element 14 and the filter element 13 can be designed to at least partially overlap. They can also be designed without overlapping.
  • the filter element 13 When inserted into the downdraft fan 4, the filter element 13 automatically slides into the correct position relative to the collecting element 14.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Separating Particles In Gases By Inertia (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Ventilation (AREA)
  • Baking, Grill, Roasting (AREA)
EP17732422.5A 2016-06-22 2017-06-22 Muldenlüfter mit einem einsatz Active EP3475622B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016211206.6A DE102016211206A1 (de) 2016-06-22 2016-06-22 Einsatz für einen Muldenlüfter
PCT/EP2017/065410 WO2017220728A1 (de) 2016-06-22 2017-06-22 Einsatz für einen muldenlüfter

Publications (2)

Publication Number Publication Date
EP3475622A1 EP3475622A1 (de) 2019-05-01
EP3475622B1 true EP3475622B1 (de) 2023-08-23

Family

ID=59152895

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17732422.5A Active EP3475622B1 (de) 2016-06-22 2017-06-22 Muldenlüfter mit einem einsatz

Country Status (9)

Country Link
US (1) US10948198B2 (ko)
EP (1) EP3475622B1 (ko)
KR (1) KR102305968B1 (ko)
CN (1) CN109416186B (ko)
AU (1) AU2017281474B2 (ko)
CA (1) CA3028836C (ko)
DE (1) DE102016211206A1 (ko)
ES (1) ES2959733T3 (ko)
WO (1) WO2017220728A1 (ko)

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DE102017223828A1 (de) * 2017-12-27 2019-06-27 Wilhelm Bruckbauer Dunstabzugsvorrichtung zum Abzug von Kochdünsten nach unten
KR20210036942A (ko) * 2018-07-24 2021-04-05 빌렘 브루크바우어 연기 추출 디바이스
EP3956610A1 (de) * 2019-04-17 2022-02-23 BSH Hausgeräte GmbH Kombinationsgerät mit dunstabzugsvorrichtung und kochfeld
DE102019213610B3 (de) * 2019-09-06 2020-12-17 Wilhelm Bruckbauer Einströmdüse
US20230056084A1 (en) * 2020-02-14 2023-02-23 BSH Hausgeräte GmbH Fume extraction device, system for installation, and assembly kit for a fume extraction
IT202000027516A1 (it) 2020-11-17 2022-05-17 Faber Spa Gruppo filtro perfezionato per cappa aspirante
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EP4332441A1 (en) * 2022-08-30 2024-03-06 Electrolux Appliances Aktiebolag Filter assembly and combination appliance
KR20240037102A (ko) * 2022-09-14 2024-03-21 삼성전자주식회사 조리 기기

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Also Published As

Publication number Publication date
ES2959733T3 (es) 2024-02-28
CA3028836A1 (en) 2017-12-28
US10948198B2 (en) 2021-03-16
KR102305968B1 (ko) 2021-09-28
DE102016211206A1 (de) 2017-12-28
AU2017281474A1 (en) 2019-01-03
CN109416186B (zh) 2024-02-13
WO2017220728A1 (de) 2017-12-28
CN109416186A (zh) 2019-03-01
US20190203949A1 (en) 2019-07-04
KR20190020685A (ko) 2019-03-04
AU2017281474B2 (en) 2023-02-02
CA3028836C (en) 2023-12-12
EP3475622A1 (de) 2019-05-01

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