EP2372255A2 - Grease filter for an extractor hood and vapour extractor hood - Google Patents

Abstract

Fat filter element (1) comprises two outer layers (10, 11) and a filler made of plastic particles (13), which is arranged between the outer layers. An independent claim is also included for an exhaust bonnet, comprising a suction opening for sucking fumes and vapors, where the suction opening is provided with at least one fat filter element.

Description

The invention relates to a grease filter element for an extractor hood and an extractor hood.

For extractor hoods, especially for use in kitchens, it is known to provide grease filters. About this grease filter is sucked from the hood contaminated air, for example in the form of fumes and fumes of fat and other particles, such as oil or water particles, freed. For this purpose, a filter cartridge is generally used in which a plurality of layers of an expanded metal are arranged. Through the openings in the individual expanded metal layers and the resulting change in direction of the fumes and vapors, particles, in particular fat and liquid particles from the vapors and fumes are filtered out and are deposited on the expanded metal layers.

A disadvantage of these known filter cartridges is their sensitivity to alkalis in the dishwasher.

Furthermore, for example, from the DE 39 25 079 A1 an article for absorbing cooking fat containing an absorbent bed of particles and polyolefin microfibers. A disadvantage of this article is that it is a disposable device, that is, can not be used again after one-time saturation with cooking fat.

The object of the present invention is to provide a grease filter element for the separation of impurities from fumes and vapors, in particular grease, which at least reduces or at least reduces the disadvantages of known grease filter elements.

The invention is based on the finding that this object can be achieved by providing the grease filter element with a filler which differs from the cover layer of the grease filter element in shape and / or material and is arranged in a suitable form between the cover layers.

According to a first aspect, the object is therefore achieved by a grease filter element for an extractor hood, which has two cover layers. The fat filter element is characterized in that between the cover layers, a filler in the form of a bed of plastic particles is arranged.

The grease filter element is also referred to below as a filter element. For the purposes of the present invention, a cover layer is a layer of the fat filter element which, in the main flow direction of fumes and vapors, represents the first or the last layer through the filter element. The first position in the flow direction is also referred to below as the inflow side of the grease filter element. The last layer is also referred to as the clean air side of the grease filter element. The inflow side is thus the side of the fat filter element, which is the first of contaminated fumes and vapors flows when operating the hood. The clean air side is the side of the grease filter element through which the purified air leaves the grease filter element. The cover layers of the fat filter element according to the invention have openings through which air can enter the interior of the fat filter element and exit from the interior of the fat filter element.

As filling a filling of the fat filter element is called, which covers the surface of the cover layers at least partially. Preferably, the filler completely covers at least the surface of the cover layer on the upstream side.

By according to the invention, the filler of a different material than the cover layer, a number of advantages can be achieved. On the one hand, the material of the filler can be selected so that it has a lower specific weight than the material of the cover layer. In addition, the filler is exposed to the fat filter element according to the invention no mechanical stress, since it is held by the cover layers. The shape of the filler can therefore be selected according to fluidic aspects.

By providing two cover layers, in particular a cover layer on the inflow side and a cover layer on the opposite clean air side, a gap is formed, can be reliably held in the filler of different shapes. Particularly preferably, the fat filter element according to the invention represents a filter cartridge, wherein the two cover layers in a frame, for example made of aluminum. As a result, on the one hand the distance between the two cover layers can be fixed and on the other hand leakage of the filler on the sides can be prevented. The two cover layers, which are designed flat, thus form together with the frame an interior in which the filler can be introduced.

By using plastic particles as fillers in the fat filter element according to the invention, a number of advantages can be achieved. On the one hand, the specific weight of plastic is low, so that in this way the total weight of the fat filter element is reduced. Furthermore, plastic can be made in a cost effective manner in particulate form. Finally, plastic has the advantage that this fat and liquid particles can bind. In addition, bound or adhering to the particles fat and liquid particles can be easily solved by the plastic again. In particular, plastic particles can be cleaned by simply washing or rinsing in a dishwasher of grease and other contaminant particles. The filler, which consists of plastic particles, can thus be regenerated in the dishwasher. This is advantageous over other filter materials, such as activated carbon, where the regeneration usually has to be done by consuming processes.

By having the plastic as plastic particles, hereinafter also referred to as particles, the surface in the fat filter element, on which fat particles and other impurities can be deposited, is maximized. In addition, various types of plastic particles, in particular different materials or shapes can be mixed together. Preferably, the material of the filler is highly polar, as this can maximize the binding of fat and oil to the particles.

The cover layer may be a perforated plate or an expanded metal layer. This type of cover layer can be used both on the upstream side and on the clean air side. According to the invention, it is possible to design both cover layers in the same manner, that is to say, for example, as a perforated plate or expanded metal layer. Alternatively, it is also within the scope of the invention to design a cover layer as a perforated plate and the other layer as expanded metal layer. By using a perforated metal sheet or expanded metal sheet as a liner, the grease filter element becomes stability over its surface. Nevertheless, the air inlet is not obstructed due to the openings provided in the perforated plate or expanded metal layer. In particular, a layer in which the openings are obtained by stretching a slotted sheet is referred to as expanded metal sheet. Preferably, a close-meshed expanded metal is used in which the mesh size can be 3 or 4 mm, for example. In a perforated plate, the holes are preferably introduced by punching in a sheet. The perforated plate and the expanded metal may for example consist of aluminum or stainless steel.

According to the invention, the filler is in the form of a bed. A bed is here understood to mean a layer of loose particles which are not connected or fastened to one another. In contrast to filter mats, which are made of fleece for example, with a bed of particles on the one hand the surface on which impurities can be deposited is maximized. On the other hand, a bed usually allows a certain movement of the particles relative to each other, which is particularly advantageous for the regeneration or cleaning of the grease filter element.

According to one embodiment, the filler represents a plastic granulate. Granules are understood to be a grain mixture which is very uniform in grain form and grain size. By the grain shape and grain size are uniform, it can be prevented in a granulate unwanted leakage or trickling small particles from the fat filter element.

As materials for the filler different plastics come into consideration. For example, the plastic particles of polycarbonate, polyamide or polybutylene terephthalate (PBT) can be used.

According to one embodiment, the filler consists of a spherical material. Due to this shape of the plastic particles, the space formed between the cover layers can be optimally filled and thereby the largest possible surface area for the deposition of impurities can be created. However, other particle shapes, such as oval, square or other - even irregular - geometries are possible according to the invention.

Preferably, the size of the particles of the filler is selected to be low, as this can improve the degree of greasing. For example, the particles may have a size in the range of 3mm to 1cm. The smallest particle size of the particles is determined by the size of the openings in the cover layers. The largest size is limited by the height of the frame, which in turn is determined by the dimensions of the extractor hood on the suction opening and the fastening means on the suction opening. Preferably, the filter element has a height or thickness of 6 to 20mm. With this height, the filter element according to the invention can be used in known extractor hoods as a replacement for filter cartridges, which consist exclusively of expanded metal layers, without a change to the hood is required.

Furthermore, it is possible in the fat filter element according to the invention also to increase the filter usable area. The filter useful area is the size of the area on the upstream side. Due to the filling of the filter element with particles different shapes of filter elements can be easily filled with them. Thus, for example, the cover layers each have a shell shape, wherein the two shells are set with the same orientation. As a result, the filter is given the shape of a spherical section. The use of corrugated cover layers is also possible, with the valleys and elevations of the corrugations of the two cover layers being aligned with each other. As a result, a constant thickness of the filter element is ensured over its surface despite the increased filter effective area and a passage of unpurified air, which is also referred to as leakage, can be prevented.

According to one embodiment, the particle size of the filler decreases to a clean air side of the grease filter element. By this configuration, the density of the plastic particles can be increased to the clean air side. As a result, the filter is compacted on this side and continue to ensure the reliable cleaning of the fumes and vapors. The decrease in the particle size can be continuous, wherein in the production, for example, in each case a layer of a first larger and then a layer of a smaller particle size are poured. As a result, as a rule, at the transitions of the layers, the particles of different sizes are mixed and thus a continuous transition of the particle size.

In the fat filter element, according to one embodiment, at least one stabilizing device may be provided for fixing the filler. The stabilizing device may be an intermediate layer, which is arranged between the cover layers and is aligned according to the cover layers, in particular lies parallel thereto. As a result, for example, layers having different particle sizes can be separated from one another. Alternatively or additionally, a stabilizing device may be provided, for example in the form of webs, which delimit areas in the surface of the filter element and thus prevent slippage of the filler. When slipping of the filler could namely lead to leakage in corners, could pass through the uncleaned contaminated air. The webs may for example be introduced perpendicular to the cover layers between the cover layers and extend over part of the distance or over the entire distance between the cover layers.

Preferably, therefore, the at least one stabilizing device is at an angle of more than zero degrees to at least one cover layer. The so aligned stabilizers are also referred to as webs. By the webs are arranged in a direction which differs from the direction of the cover layer, the webs can protrude into the space between the two cover layers. Since in this space according to the invention, the filler is provided, limit the webs in this embodiment, the movement of the filler in the direction parallel to the surface of the cover layers. The webs may be provided on the upper side of the cover layer on the inflow side and / or on the underside of the cover layer on the clean air side of the filter element. The webs may be attached to the cover sheet or layers. But it is also possible that the webs are separate to the cover layers and, for example, form a three-dimensional structure, such as a grid, which can be placed between the cover layers and optionally held by a frame of the filter element. By the webs are formed over at least part of the depth of the intermediate space of the filter element, that is, the distance between the two cover layers, chambers. If the webs extend over the entire depth of the interstice of the filter element, the chambers are closed to the sides and the filling material can move only within the respective chamber. If the height of the webs hung less than the depth of the gap, then the movement in the direction parallel to the topsheet is impeded only over part of the depth of the gap, the filler but can pass from one chamber so formed into another chamber.

By means of the stabilizing device (s) it can be ensured that the distribution of the filler in the intermediate space between the cover layers is still uniform even after a movement of the filter element. The filter element according to the invention can be made, for example, for cleaning purposes in a dishwasher. In this case, the filter element is usually arranged so that the cover layers are inclined out of the horizontal. In this position, there is a risk in a filter element without a stabilizer that the filler accumulates on one side of the gap. In the wider region of the intermediate space there is then no or only a small amount of filling agent, so that the filter effect would be impaired in this area. When providing stabilizers, however, the filler is kept as far as possible in the desired position and thus even after a cleaning process, a uniform distribution of the filler can be ensured.

According to a preferred embodiment, the filter element has a round shape in plan view. In this case, the vertical view of the filter element on the clean air side or on the inflow side is referred to as top view. As a round shape, a shape is referred to, whose surface is bounded by a boundary line, which preferably has no corners. In particular, a shape is designated as a round shape, in which the boundary line has over its course only direction changes of greater than 90 degrees. The direction changes are indicated by the internal angle of the change in direction. The round shape may therefore be, for example, a rectangle with rounded corners, a polygon with more than four corners, for example a hexagon or octagon, or be an oval.

The shape of the filter element, which is usually formed by the cover layers and an optionally provided frame, also defines the shape of the interspace of the filter element. By having no rectangular or sharp corners on the mold, the gap can be reliably filled with filler. For pointed or rectangular corners, such filling is difficult because the particles of the filler may not be able to get into the corner. In this case, therefore, the air flows through the filter element without being cleaned to become. Due to the preferred, round shape of the filter element such undesirable passage can be avoided.

According to one embodiment, the filter element has a circular shape in plan view. In this embodiment, the already mentioned advantage of preventing leaks due to the fact that no corners are provided is also achieved. With a circular filter element, the leakage at the corners can be ensured even with a larger particle size of the filler. Another advantage of the circular shape is that the filter element in this embodiment has no concrete mounting position, that is, the filter element can be inserted in different angular positions in a likewise circular intake of the hood, whereby the assembly is facilitated. In addition, other fastening devices for holding the filter element to the extractor hood can be used in a circular filter element. For example, a bayonet lock can be used. About the bayonet lock the filter element can be attached by a rotary movement with optionally additional plugging movement on the hood.

According to one embodiment, the stabilizers provided in the space between the topsheets form a grid. In this case, such an arrangement of the stabilizing devices is referred to as the grid, in which at least two stabilizing devices intersect at least in their extension. The stabilizing devices in this embodiment preferably represent webs which, as defined above, project from at least one of the cover layers into the intermediate space of the filter element. The grid may in this embodiment be formed for example by two groups of webs, wherein the webs of each of the groups are parallel to each other and the webs of the first group and the webs of the second group, for example, perpendicular to each other. Other forms of gratings can also be used according to the invention. Thus, for example, a grid may be used whose chambers have a honeycomb shape, ie hexagonal shape or an octagonal shape.

According to one embodiment, the at least one stabilizer device is arranged radially. Also in this embodiment, the stabilizers are formed by webs. These webs extend radially from one point. This embodiment is particularly advantageous for a circular filter element. The point from which the webs extend is the center of the circle. The webs preferably do not extend to the center in such a radial arrangement, but end at a distance therefrom. As a result, the formation of acute angles between the webs in the region of the center is prevented. Also preferably to the outer edge of the filter element, the webs terminate at a distance, so that even at these locations no acute angle between the outer wall, which is formed for example by a frame, and the webs are formed. The length of the webs in the radial direction can be the same for all webs. But it is also possible that some of the bars are longer than the other bars.

According to one embodiment, the filler is doped. As doping, in particular a surface treatment of the particles of the filler is understood. This can be, for example, the introduction or introduction of means for increasing hygiene, that is to say sterilization of the particles. However, agents that contain or generate odors may also be used. For example, the plastic particles may be doped with potassium permanganate or silver.

According to a further aspect, the present invention relates to an extractor hood, which has a suction opening for sucking in fumes and vapors. The extractor hood is characterized in that at least one inventive grease filter element is provided in the suction opening of the extractor hood.

The intake opening of the extractor hood is the opening through which steam and steam enter the extractor hood. The suction port can therefore also be referred to as an inlet opening. At a provided in the suction opening of the extractor hood fat filter element are separated from the laden with fat and other impurities vapors and fumes impurity particles, for example in the form of fat droplets from. By using the fat filter element according to the invention, on the one hand, an efficient separation of the particles is possible, since the surface in the fat filter element, where deposition can take place, is large. On the other hand, the fat filter element can be easily regenerated. In particular, the fat filter element, since the filler are plastic particles, are cleaned in the dishwasher.

The suction opening may be rectangular or round in the extractor hood according to the invention. With a circular suction opening in the extractor hood, a filter element with a circular shape can be used. In this embodiment, the attachment of the filter element to the hood can be done for example by a bayonet lock. For this purpose, pins may be provided on the filter element, which extend from the periphery thereof to the outside. Alternatively, recesses or grooves may be provided in the periphery of the filter element, in which pins of a closure provided on the extractor hood can engage. The attachment by means of bayonet lock has the advantage that it can be easily solved but still ensures a reliable hold of the filter element to the hood.

Advantages and features that are described with respect to the fat filter element according to the invention apply - as far as applicable - for the inventive extractor hood and vice versa.

• Figur 1: eine schematische, perspektivische Schnittdarstellung einer ersten Ausführungsform des erfindungsgemäßen Fettfilterelementes;
• Figur 2: eine schematische, perspektivische Schnittdarstellung einer zweiten Ausführungsform des erfindungsgemäßen Fettfilterelementes;
• Figur 3: eine schematische Schnittdarstellung einer dritten Ausführungsform des erfindungsgemäßen Fettfilterelementes;
• Figur 4: eine schematische Draufsicht auf eine Ausführungsform des erfindungsgemäßen Filterelementes
• Figur 5: eine schematische Schnittansicht einer Ausführungsform der erfindungsgemäßen Dunstabzugshaube; und
• Figur 6: eine schematische Untersicht der Ausführungsform der Dunstabzugshaube nach Figur 5.

The invention will be explained again below with reference to the accompanying drawings. Hereby show:

• FIG. 1 a schematic, perspective sectional view of a first embodiment of the fat filter element according to the invention;
• FIG. 2 a schematic, perspective sectional view of a second embodiment of the fat filter element according to the invention;
• FIG. 3 a schematic sectional view of a third embodiment of the fat filter element according to the invention;
• FIG. 4 : A schematic plan view of an embodiment of the filter element according to the invention
• FIG. 5 a schematic sectional view of an embodiment of the extractor hood according to the invention; and
• FIG. 6 : A schematic bottom view of the embodiment of the hood after FIG. 5 ,

FIG. 1 shows a first embodiment of the fat filter element 1 according to the invention, which is also referred to below as a filter element. The filter element 1 represents a filter cartridge. In a frame 12 which surrounds all lateral edges of the filter element 1, in this case a lower cover layer 10 is held on the inflow side of the filter element 1. The cover layer 10 consists in the illustrated embodiment of a flat expanded metal layer. On the cover layer 10 filler is provided which consists of round Füllmittelpartikeln 13 in the illustrated embodiment. The filler particles 13 are tightly packed and completely fill the interior of the filter element 1 which is bounded laterally by the frame 12. At the top of the filter element 1, an upper cover layer 11 is provided, which also represents a flat expanded metal layer in the illustrated embodiment. These, provided on the clean air side of the filter element 1, cover layer 11 is held in the frame 12.

In FIG. 1 are shown by dashed lines also stabilizing devices 14 in the form of webs, which may be provided in the filter element 1. The webs are perpendicular to the cover layers 10, 11 and have a height corresponding to the distance between the two cover layers 10, 11. In the FIG. 1 two webs are provided so that in the interior of the filter element 1, three chambers are formed, in which the filler is added.

Wrasen, who in an extractor hood (in FIG. 1 not shown) in the suction port introduced filter element 1 flows against, first meets the top layer 10 of the filter element 1. The main flow direction of the vapor is indicated in the figure by the arrow marked W. Through the openings in the expanded metal of the cover layer 10 of the vapor penetrates into the interior of the filter element 1 a. Here, the vapor flows along the surfaces of the filler particles 13, which are made of plastic, and impurities from the vapor deposit on the surfaces. The flow between the filler particles 13 is possible because the filler particles 13 are in the form of a bed and due to the circular shape of the particles 13 there are gaps between them. The thus Air largely freed from impurities finally leaves the filter element 1 via the openings in the cover layer 11 on the clean air side 11 and thus enters the interior of the extractor hood, where further treatment devices for the air, such as odor filters can be provided.

The filler particles 13 of the first embodiment have, in the illustrated embodiment, apart from tolerances that are production-related, all the same size. It is understood that the shape of the particles 13 may also differ from a spherical shape. The particles 13 may, for example, also be egg-shaped or present as grains having irregular shapes. A mixture of different forms of particles 13 can also be used as filler.

In addition or as an alternative to divergent shapes, it is also possible to provide particles 13 of different sizes in a filter element. One possibility of such a particle distribution is in the FIG. 2 shown. The construction of this second embodiment of the filter element 1 essentially corresponds to that in FIG FIG. 1 shown construction. In particular, flat cover layers 10 and 11 are provided from expanded metal and the cover layers 10 and 11 and the filler provided therebetween are held by a frame 12. In this case, 10 particles 13 of a certain size are provided in a first layer on the lower cover layer. On this first layer is another layer of particles 13 of smaller size. The particle size thus decreases at the in FIG. 2 shown embodiment of layer to layer, so that on the clean air side, the particles 13 are present with the smallest particle size. In the FIG. 2 For example, the individual layers are each shown as a series of particles 13. It is understood, however, that the individual layers can each have a thickness which is greater than the size of a particle 13 and the arrangement of the particles 13 in the layers can be irregular. In addition, the layers can also be mixed together at their passages.

In FIG. 3 a further embodiment of the filter element 1 according to the invention is shown. In this embodiment are different from those in the FIGS. 1 and 2 embodiments shown, the cover layers 10 and 11 not configured flat. In the embodiment shown, the cover layers 10 and 11 rather have a waveform. The waves of the two cover layers 10 and 11 are so aligned with each other so that the thickness of the filter element 1 over its surface is constant that is constant. Also between the in FIG. 3 shown corrugated cover layers 10 and 11 Füllmittelpartikel 13 are added. Also in this embodiment, the particles 13 fill the limited by the frame 12 and the cover layers 10 and 11 interior of the filter element 1 completely.

In FIG. 4 is a schematic plan view of an embodiment of the filter element 1 according to the invention shown. In this illustration, the cover layer is recessed to allow the view of the interior of the filter element 1. In the frame 12, a grid of stabilizers 14 in the form of webs is provided in this embodiment. Through the grid chambers are formed, in which the Füllmittelpartikel 13 are held. In FIG. 4 If the filler particles 13 are shown only in one chamber, they are also present in the other chambers.

In FIG. 5 an embodiment of the extractor hood 20 according to the invention is shown. In FIG. 5 For better visibility, only the housing 21 of the extractor hood 20 and the filter element 1 are shown. Of course, the extractor hood 20 includes other components, such as a fan and the like. The housing 21 extractor hood 20 comprises in the illustrated embodiment, a viewing hood 22, which has a roof shape in the illustrated embodiment, and a lower cover 23 of the viewing hood 22. The lower cover 23, which may for example be a sheet metal flap, is movable relative to the viewing hood 22 and in particular pivotable. In the in FIG. 5 shown position, the lower cover 23 is pivoted at the front side down.

In the lower cover 23, the suction port 24 of the extractor hood 20 is provided, can enter via the steam and fumes into the interior of the hood 20, in particular into the interior of the viewing hood 22 and then exit via an air outlet from the hood 20.

The suction opening 24 has a circular cross-section in the illustrated embodiment. As can be seen in particular FIG. 6 results, the suction port 24 is provided in the rear region of the lower cover 23. In the suction port 24, a filter element 1 is introduced. The filter element 1 is connected by a bayonet lock 25 to the extractor hood 20, in particular at the intake opening 24 attached. The filter element 1 also has a circular shape. In FIG. 6 the lower cover layer of the filter element 1 is not shown to allow the view of the interior of the filter element 1. As it turned out FIG. 6 results in stabilizing devices 14 are provided in the form of webs in the filter element. The webs are arranged radially to the center of the filter element 1 in this embodiment. The stabilizers 14 terminate in the illustrated embodiment to the edge of the filter element 1 and the center of the filter element 1 at a distance. In the illustrated embodiment, the webs have different lengths. But it is also possible to use webs with the same length. The filler particles 13, which are provided in the filter element 1 between the stabilizers 14, are in the FIG. 6 Not shown.

The present invention is not limited to the embodiments shown in the figures. It is possible that one or more features of a first embodiment shown are realized in another embodiment shown or not shown, without the other features of the first embodiment shown also having to be fulfilled. Thus, for example, be provided in a filter element in which the cover layers have a waveform filler, the particle size decreases towards the clean air side. Also, the extractor hood according to the invention may have a different shape than shown in the figures.

The present invention provides a new and cost effective solution for filter elements that includes a special construction of the filter elements and can serve as an alternative technology to previous complex solution systems.

With the present invention a number of advantages are achieved. Due to the filter element according to the invention there are no delivery volume losses of hoods with higher delivery rates. In addition, a high Fettabscheidungsgrad can be achieved. The extraction behavior remains noticeably good for the customer. Optimal flow velocity profiles can be achieved. As before, it is easy to mount. The weight of the filter is low. In addition, different types of granules can be mixed. In the filter according to the invention chemical functions can be integrated, so in addition to the pure mechanical deposition of fat and a chemical deposition by a suitable choice of Materials for the filler or by treatment of the filler can be achieved. A compaction of different granule layers is possible. There is no impairment of the vapor capture rate. In addition, the filter is quickly converted to other granules. The more polar the granules, the better the fat deposits. Furthermore, the present invention brings a significant benefit for customer service, since the filter according to the invention represents an effective retrofit filter. On a cooker hood, in which the filter element is to be used, no conversion measures are required. The filter usage area can be set large, which results in a longevity of the filter. Finally, the filter material can be doped with pleasant odors.

LIST OF REFERENCE NUMBERS

1

Grease filter element

10

Cover layer inflow side

11

Cover layer clean air side

12

frame

13

filler particles

14

stabilizing

20

Hood

21

casing

22

Viewing cover

23

Lower cover

24

suction

25

bayonet catch

W

Main flow direction Wrasen

Claims (15)

Fat filter element for an extractor hood, characterized in that the fat filter element (1) has two cover layers (10, 11) and between the cover layers (10, 11) a filler in the form of a bed of plastic particles (13) is arranged. Fat filter element according to claim 1, characterized in that the cover layer (10, 11) is a perforated plate or an expanded metal layer. Fat filter element according to one of claims 1 or 2, characterized in that the filler is a granulate. Grease filter element according to one of claims 1 to 3, characterized in that the filler consists of plastic, in particular polycarbonate, polymamide or PBT. Fat filter element according to one of claims 1 to 4, characterized in that the filler consists of a spherical material. Fat filter element according to one of claims 1 to 5, characterized in that the particle size of the filler to a clean air side of the grease filter element (1) decreases. Fat filter element according to one of claims 1 to 6, characterized in that in the fat filter element (1) at least one stabilizing device (14) is provided for fixing the filler. Fat filter element according to claim 7, characterized in that the at least one stabilizing device (14) is at an angle of more than zero degrees to at least one cover layer (10, 11). Fat filter element according to one of claims 1 to 8, characterized in that the filter element (1) has a round shape in plan view. Fat filter element according to claim 9, characterized in that the filter element (1) has a circular shape in plan view. Fat filter element according to one of claims 7 to 10, characterized in that the stabilizing devices (14) form a grid. Fat filter element according to one of claims 7 to 11, characterized in that the at least one stabilizing device (14) is arranged radially. Fat filter element according to one of claims 1 to 12, characterized in that the filler is doped. Extractor hood, which has a suction opening (24) for sucking in fumes and vapors, characterized in that at least one grease filter element (1) according to one of claims 1 to 13 is provided in the suction opening (24). Extractor hood according to claim 14, characterized in that the fat filter element (1) via a bayonet lock to the extractor hood (20) is attached.

Images