EP2952819B1 - Filter element for an extractor hood and extractor hood - Google Patents

Description

The present invention relates to a filter assembly for an extractor hood and an extractor hood with such a filter assembly.

For cleaning of fumes and vapors, which arise in particular when cooking, it is known to use cooker hoods. Herein, impurities contained in the fumes and vapors, such as grease, liquids or other entrained particles are deposited in so-called grease filters. The grease filters are usually filter cassettes, which are introduced into the suction opening of the extractor and fixed in this intake. For example, the attachment takes place by means of locking pins on the edge of the filter cartridge for engagement in corresponding openings on a viewing hood of the extractor hood.

A disadvantage associated with this type of use of grease filters is that at least some of the contaminants can pass through the grease filter and then enter the interior of the extractor hood, where they adhere to the inside of the housing of the extractor hood, in particular at the Lower the inside of the hood of the extractor hood. The interior of the cooker hood is difficult to reach even after removal of the grease filter for the user of the hood and can therefore be difficult to clean.

In the DE 10 2009 028808 A1 an inner frame for an extractor hood is described. The inner frame has an interface for attachment to a fan box and at least one attachment area for attachment of at least one filter element. The inner frame consists of a trough-shaped base body, which has a back. The inner frame preferably has a main body and a rear wall attached to the main body. The filter element is attached via Einhängöffnungen in the rear wall and fastening devices on a light rail of the hood on this. The inner frame is attached to the top of the fan box.

A disadvantage of this extractor hood is that the handling of the inner frame and the filter elements for attachment to the hood is expensive.

Object of the present invention is thus to provide a solution that can be done with a simple manner and a simple construction of the hood reliable separation of fat particles and by means of which at the same time the unwanted separation of particles inside the hood can be reliably prevented.

The invention is based on the finding that this object can be achieved by providing a filter arrangement which also covers part of the interior of the extractor hood.

According to a first aspect of the invention, the object is achieved by a filter arrangement for an extractor hood, which has at least one filter device with at least one filter element. The filter device has a filter cover for the at least one filter element, which comprises at least one air guide element, which is connected to the filter element. Between the top of the at least one filter element and the air guide an air guide is formed. The filter device has fastening means for releasably securing the filter device to an extractor hood. At least in the region of the air guiding element, the filter cover serves for targeted air guidance of air from the upper side of the filter element to an air outlet opening of the filter arrangement. The filter assembly is characterized in that the filter device is a preassembled unit and that the filter element is permanently connected to the filter cover of the filter device.

As a filter assembly, an assembly is referred to, which serves for the separation of particles, in particular fat from fumes and vapor in an extractor hood. The extractor hood according to the invention represents, for example, a so-called Esse, in which a fan housing is accommodated in a chimney. The fireplace is followed by a viewing hood down, which at least partially surrounds the chimney and / or protrudes over this forward and / or to the sides. The filter assembly according to the invention can also be used in other types of cooker hoods be, for example, in substructure hoods. The filter assembly consists of at least one filter device. Each filter device in this case represents a preassembled unit. This means that the filter device can be used as a unit in the extractor hood and removed therefrom. As a filter device in this case an assembly is referred to, which comprises at least one filter element. In the simplest embodiment, the filter assembly consists of a single filter device. Preferably, however, at least two or more filter devices are contained in a filter assembly.

As a filter element, an element of the filter device is referred to, which consists at least partially of a filter material. The filter element may for example consist of expanded metal filter layers, which are optionally held in an element frame.

According to the invention, the filter device has a filter cover in addition to the filter element. The filter cover can also be called an apron. The filter cover comprises an air guide element. The air guide element is connected to the filter element. In particular, the air guide element is attached directly or indirectly to the filter element. The air guide is made of an air-impermeable material. At least in the region of the air guide element, the filter cover therefore serves for air guidance in the filter arrangement and in particular for targeted air guidance of air from the upper side of the filter element to an air outlet opening of the filter arrangement. The filter cover may be made of plastic or metal. In particular, the filter cover may be an injection-molded part or a bent part.

The spoiler is inventively provided so that between the top of the filter element and the spoiler an air guide is formed. For this purpose, the air guide element is at least partially spaced from the top of the filter element. The air guide is thus limited downwards from the top of the filter element. Upwards and to the sides of the air guide is at least partially limited by the air guide element, as will be explained in more detail later. Particularly preferably, the Luftleitraum the filter assembly, which is optionally formed by a plurality Luftleiträume of filter devices, thus only one Air inlet via the filter element and a preferably upwardly directed air outlet. The walls of the air duct, which are formed by the one or more air guide elements, however, are impermeable to air.

Direction information regarding the filter assembly or parts of the filter assembly, such as above or below, unless otherwise stated, refer to the filter assembly in the state of the filter assembly inserted in an extractor hood. In particular, these directions relate to a filter arrangement which is introduced into a horizontal suction opening of the extractor hood.

The filter assembly according to the invention further comprises fastening means for releasably securing the filter device to an extractor hood. As fastening means, for example latching devices, pins or hooks can be used. Alternatively, as a fastening means also receiving openings for locking devices, pins or hooks can be used. Furthermore, the fastening means may for example also be magnets.

By providing a filter cover in the filter arrangement according to the invention which comprises an air guide element which is designed and arranged such that an air guide space is formed between the upper side of the filter element and the air guide element, impurities that should pass through the filter element of the filter device can be provided on the air guide element and thus deposited on a portion of the filter assembly. Contamination of the housing of the hood, in particular the inside of the viewing hood can thus be prevented. In addition, since fastening means for releasably securing the filter device to the extractor hood are provided on the filter arrangement, it is possible to remove the filter device from the extractor hood in order to clean it, for example. By the filter device is a pre-assembled unit, except the filter element and the associated filter cover removed simultaneously from the hood and can thus also be cleaned outside the hood. Since the filter cover is connected to the filter element, the filter device can be removed as a unit from the hood and inserted into it, whereby the handling and cleaning of the filter assembly is further simplified.

The filter device is a preassembled unit. This means that the filter element and the filter cover can be connected to each other before introduction into the hood.

According to a further embodiment, the filter device, that is to say the filter element with the associated filter cover of the filter device, constitutes a preassembled unit. According to the invention, the filter element is permanently connected to the filter cover of the filter device. For example, the filter cover may be formed on the filter element, for example by bending or molding. In particular, in this embodiment, the filter element may also be a frameless filter element, which consists only of the filter material, for example, filter layers but has no element frame. By the filter device is a preassembled unit, their handling is further simplified. In particular, the filter device can be reliably removed as a unit from the cooker hood, cleaned and used again in the hood.

According to a preferred embodiment, the fastening means for releasably securing the filter device to the extractor hood on the filter device are provided in the region of the filter element of the filter device. In the area of the filter element means in this context preferably in the region of the plane of the filter element. The advantage of having this arrangement of the fastener or is that they are easily accessible to the user of the hood and even with a fitted filter element, the filter device can be solved by the cooker hood. For example, a handle for actuating retractable locking pins may be provided in the underside of the filter element, which protrude beyond the filter element and an optionally provided filter frame of the filter cover. By introducing these locking pins into corresponding openings in the suction opening of the extractor hood, in particular the viewing hood, the entire filter arrangement including the filter cover is thus held in the extractor hood. A separate attachment of the filter cover when inserting and loosening the filter cover to remove this is not required.

Preferably, the air guiding element extends from at least a part of the edge of the filter element upwards. The extension direction of the air guide element can vary over the length of the air guide element. Thus, the air-guiding element can be inclined upwards from the edge of the filter element and, in the further course of the air-guiding element, pass into an area inclined upwards to the surface of the filter element. In addition, the air guide element can also have regions which run parallel to the surface of the filter element. Preferably, the air guide is at least partially aligned with the surface of the filter element is inclined. By such a tendency, an improvement in the flow conditions in the Luftleitraum the filter device can be achieved. In addition, in the case of an at least partially provided inclination of the air guiding element, a separation of impurities which have passed through the filter element can be improved and prevent dripping down in comparison with a surface aligned parallel to the surface of the filter element. Thus, the Fettabscheiderate the filter assembly is improved, as well as the part of the impurities that settle on the filter cover are calculated to the Fettabscheiderate, as well as the filter cover can be removed from the hood and cleaned.

According to a preferred embodiment, the air guide element covers a part of the surface of the filter element in perpendicular projection onto the filter element and at least one recess is provided in the air guide element which forms at least part of an air outlet opening of the filter arrangement. The air guide element in this case preferably extends from the edge of the filter element to a position which corresponds to the air inlet opening for the air inlet into a fan housing connected downstream of the filter element.

This embodiment of the air guide element ensures reliable guidance of the air in the air guide to an air outlet opening of the filter arrangement and at the same time prevents or at least minimizes the flow through the cover by covering part of the surface of the filter element. The area of the air outlet opening or air outlet openings of the filter arrangement preferably has a size which corresponds to the size of an air inlet opening to the housing of a fan of the extractor hood. The size of the surface of the air outlet opening is, if only one air outlet opening on the Filter arrangement is preferably equal to the size of the surface of the air inlet opening. If a plurality of air outlet openings are formed on the filter arrangement, then the size of the area formed by the individual air outlet openings is only reduced by stabilizing means. For example, may be provided as a stabilizing means a web between two air outlet openings. Preferably, the filter arrangement according to the invention consists of at least two filter devices. The recesses on the air guide elements of the individual filter devices are arranged so that they adjoin one another in the installed state of the filter assembly in the hood. The defined by the recesses faces then together form an air outlet. The recess on the air guide element is provided in the region of the air guide element, which has the greatest distance to the surface of the filter element.

The filter element preferably has a rectangular shape. The air guide element preferably extends from at least one edge, but particularly preferably at least from at least two edges of the filter element. If the air guide element is connected to the filter element only at two edges, then these edges lie on opposite sides of the filter element, in particular on the rear side and the front side of the filter element. A filter device, in which the air guiding element extends only from two edges, thus has two open sides. On these open sides more filter devices can be arranged in the hood. In a filter device in which the air guide element extends from three edges of the filter element, the filter device has only one open side, to which a further filter device can connect in the extractor hood. By means of these embodiments of the air guiding elements, a plurality of filter devices in the filter arrangement can be provided adjacent to one another in exhaust hoods of greater width. This has the advantage that the size of the individual filter devices is smaller and therefore easier for the user of the extractor hood to handle.

According to one embodiment, the filter cover comprises a filter frame and the air guide element is designed in one piece with the filter frame. As a filter frame in this case a region of the filter cover is referred to, in which the filter material is held directly or indirectly. The filter frame thus forms the lower part of the Filter cover. If a filter element with an element frame, for example a filter cassette is used, the filter frame of the filter cover can be a guide for the element frame. For example, the lower edge of the filter cover can be folded and thus form a holder and guide for the element frame. Even when using a frameless filter element of the filter frame may be formed by a fold and then serves to receive the edges of the filter material, which can be inserted, for example, in the filter cover of the open side of the filter device. Alternatively, however, the filter frame can also be permanently connected to the filter material. In this case, for example, the filter material can be glued, welded or otherwise connected to at least one of the edges of the filter material with the material of the filter cover, for example, be injected. Finally, it is also possible to use an element frame as a filter frame in the sense of the present invention. In this case, we attached to the outer sides of the element frame of the filter element or on the upper side of the element frame, the air guide element on the element frame. This attachment can be done for example by means of welding, spraying or the like. According to a further embodiment, an insulating material is at least partially provided in at least one filter device. The insulating material is preferably provided in the air guide. For example, the insulating material may be provided on the side of the air guide element facing the air guide space and fastened there. The insulating material is preferably a Geräuschdämmmaterial. In addition, the insulating material is preferably dishwasher-safe. By providing a noise insulating material, the noise level of the extractor hood can be reduced overall. In addition, the fat removal rate is further increased in this embodiment, since the surface of an insulating material is generally better suited for the deposition of particles, as a flat surface. Since the filter device according to the invention is pre-assembled, the insulating material can be removed in one unit together with the filter element and the Fitlerabdeckung. The handling of the filter device (s) and thus the filter assembly is therefore further facilitated.

According to a further embodiment, at least part of the recess of the air guiding element is covered by a cover part. The cover part is preferably with the Air guide connected via a predetermined breaking point. As a result, the cover part can be removed by breaking away from the air guide element and thus out of the region of the recess. The advantage of providing such a cover part is that the size of the air outlet opening can be easily adapted to the conditions in the extractor hood. Thus, in the case of an extractor hood, in which three filter devices must be provided adjacent to one another, the size of the air outlet opening through the cover parts can be reduced to the size of the air inlet opening of the fan housing. On the other hand, if only two filter devices are to be introduced in the extractor hood, the cover parts of the filter devices can be removed, thus increasing the size of the air outlet opening to the size of the air inlet opening.

By providing cover parts can therefore be ensured with minimized storage and simplified production in a simple manner the reliable management of air from the filter element to the air outlet of the filter assembly and through this to the air inlet opening of the fan housing. In addition, an undesirable passage of contaminants through the air outlet opening of the filter assembly is prevented in a region of the extractor hood except the housing of the fan of the hood.

According to a further aspect, the invention relates to an extractor hood. Advantages and features that have been described with respect to the filter assembly, apply - where applicable - according to the cooker hood and vice versa.

The extractor hood according to the invention is characterized in that it has a filter arrangement according to the invention.

According to a preferred embodiment, a filter arrangement with at least two filter devices is arranged in the extractor hood, wherein the filter apparatuses are adjacent to one another and the air ducts of the at least two filter apparatuses merge into one another. In this embodiment, the filter devices are therefore arranged in the filter assembly and thus in the hood so that open sides of the filter devices face each other. According to one embodiment, two lateral filter devices are provided, which are arranged side by side so that their Liftleiträume are open to each other. As a result, the air guide space of the filter arrangement is formed by the two air guide spaces. Preferably, the two lateral filter devices have mirror-symmetrical shapes.

According to a further embodiment, two lateral filter devices and one middle filter device are provided and the lateral filter devices differ at least in their shape from the middle filter device. In this embodiment, the lateral filter devices preferably have air guide elements which each extend from three edges of the filter element. The middle filter device, however, in this case has an air guide element which extends from one or two opposite edges. Thus, the side filter devices each have an open side and the middle filter device two opposing open sides. To each of the two opposite open sides of the middle filter device one of the lateral filter devices is attached with its open side.

If more than one filter device is present in the filter arrangement, these are preferably not connected directly to one another, but are particularly preferably adjacent to one another. The relative position of the individual filter devices to one another is set via the attachment of the filter devices to the extractor hood.

According to a preferred embodiment, the at least one air outlet opening of the filter arrangement is formed by recesses of at least two air guide elements. Alternatively, it is also possible to provide the air outlet opening only in one of a plurality of filter devices.

According to a further embodiment, the extractor hood has a viewing hood whose body is formed exclusively from the outer material of the viewing hood and the filter assembly is detachably mounted in the viewing hood. In an extractor hood, which has a viewing hood, it is in particular a dining, which has a chimney above the viewing hood. By using in the extractor hood according to the invention a filter assembly comprising a filter cover has, the design of the viewing hood, in which the filter assembly is introduced, can be simplified. In particular, it is not necessary to provide an inner frame or another air guide element as part of the viewing hood. In the present invention, in which the filter assembly comprises a filter cover with air guide, can also be ensured by this air guide the air flow from the filter element to the fan of the hood.

• Figur 1: eine perspektivische Ansicht einer Ausführungsform einer erfindungsgemäßen Dunstabzugshaube;
• Figur 2: eine perspektivische Explosionsansicht der Ausführungsform der Dunstabzugshaube nach Figur 1;
• Figur 3: eine perspektivische Explosionsansicht einer weiteren Ausführungsform einer erfindungsgemäßen Dunstabzugshaube;
• Figur 4: eine schematische Schnittansicht einer Ausführungsform einer erfindungsgemäßen Dunstabzugshaube mit eingebrachter Filteranordnung;
• Figur 5: eine schematische Schnittansicht der Ausführungsform der erfindungsgemäßen Dunstabzugshaube nach Figur 4 mit entnommener Filteranordnung;
• Figur 6: eine schematische Schnittansicht einer weiteren Ausführungsform einer erfindungsgemäßen Filteranordnung; und
• Figur 7: eine schematische Schnittansicht einer weiteren Ausführungsform einer erfindungsgemäßen Filteranordnung.

The invention will be further described below with reference to the accompanying drawings. Show it:

• FIG. 1 a perspective view of an embodiment of an extractor hood according to the invention;
• FIG. 2 : An exploded perspective view of the embodiment of the hood after FIG. 1 ;
• FIG. 3 a perspective exploded view of another embodiment of an extractor hood according to the invention;
• FIG. 4 a schematic sectional view of an embodiment of an extractor hood according to the invention with incorporated filter assembly;
• FIG. 5 : A schematic sectional view of the embodiment of the extractor hood according to the invention FIG. 4 with removed filter assembly;
• FIG. 6 a schematic sectional view of a further embodiment of a filter arrangement according to the invention; and
• FIG. 7 : A schematic sectional view of another embodiment of a filter arrangement according to the invention.

In FIG. 1 an embodiment of the extractor hood 1 according to the invention is shown schematically. The extractor hood 1 represents in the embodiment shown a so-called box-Esse dar. The hood 1 has a chimney 10 and a below the chimney 10 subsequent viewing hood 11. In the chimney 10 is a fan (in FIG. 1 not visible). In the viewing hood 11, a filter assembly 13 is introduced from below. The filter assembly 13 is in the illustrated embodiment of three parts.

As it turned out FIG. 2 The filter device 130 consists in each case of a filter element 131 and a filter cover 136. The filter cover comprises in the illustrated embodiment a filter frame 134 with air guide element 132. Between the top of the filter element 131 and the air guide element 132 of the respective filter device 130, an air guide chamber 133 is formed. The side filter devices 130 in this case have such a structure that the filter frame 134 surrounds the flat filter element 131 on three sides. From the edge of the filter element 131, the filter frame 134 extends upwards and merges into the air guide element 132. The air guide element 132 is designed in one piece with the filter frame 134. In the illustrated embodiment, the filter frame 134 has a greater height at the rear edge than at the front edge. The air guide 132 forms an inclined plane which is inclined from the front edge of the filter element 131 to the rear edge of the filter element 131 upwards. On the open side of the lateral filter device 130, a recess 1320 is introduced in the air guide element 132 in the rear region at the edge. In the embodiment shown, in vertical projection onto the filter element 131, the entire filter element 131 is covered by the air guide element 132, except for the area below the recess 1320.

In the middle filter device 130, the filter frame 134 is provided at the front edge and the rear edge of the flat filter element 131. Between the front and rear edge of the filter element 131 extends the one with the filter frame 134 ausgestaltetes air guide 132 in the form of a flat, inclined plate arranged. The inclination of the air guide element 132 of the central filter device 130 corresponds to the inclination of the air guide elements 132 of the lateral filter devices 130. On the air guide element 132 of the central filter device 130, a respective recess 1320 is provided on the two open sides of the filter device 130. The size and position of the recesses 1320 corresponds to the size and Position of the recesses 1320 in the right and left filter device 130. Between the recesses 1320, a web 1321 remains.

In the inserted state of the filter assembly 13 in the hood 1, the open sides of the central filter device 130 are respectively on the open side of the right and left filter device 130 at. In the in FIG. 1 shown assembled state of the filter assembly 13 thus form the air ducts 133 of the three filter devices a common air duct 133rd

As in the in the FIGS. 1 and 2 In the embodiment shown, the recesses 1320 on the central filter device 130 are separated from the material of the air guiding element 132 by a web 1321. In the assembled state of the three filter devices 130 in the top side of the filter arrangement 13, two air outlet openings 135 of the filter arrangement 13 are.

The air outlet openings 135 are aligned with a passage opening 111 in the top of the viewing hood 11. The size of the passage opening 111 corresponds to the size of the two air outlet openings 135 and the intermediate web 1321. Thus, the air exiting the air guide space 133 of the filter assembly 13 through the air outlet opening 135 can pass through the passage opening 111 to the fan (not shown), which is arranged in the chimney 10, to arrive.

In FIG. 3 a further embodiment of the extractor hood 1 according to the invention is shown. In this embodiment, the filter assembly 13 also includes three filter devices 130. However, the width of the three filter devices 130 is the same in this embodiment. In addition, cover parts 1322 are provided on the side filter devices 130 in the recesses 1320, which cover part of the surface of the recess 1320 formed in the air guide element 132. The cover parts 1322 are provided in the recesses 1320 so that the open part of the recess 1320 continues to be on the open side of the filter device 130, that is, the side facing the further filter device 130.

For a cooker hood of smaller width, the central filter device 130 can be recessed. There are thus only the two lateral filter devices 130 introduced into the hood. Since the cover parts 1322 would make the remaining air outlet opening 135 between them too small, in this embodiment of the filter arrangement 13, the cover parts 1322 can be removed from the recesses 1320, in particular broken out. Thus, the entire surfaces of the two recesses 1320 are available as an air outlet opening 135 of the filter arrangement 13 consisting of two filter devices 130.

The operation of the present invention will be described again with reference to FIGS FIGS. 4 and 5 described. As is apparent from these sectional views, the filter element 131 is held in the filter frame 134 of the filter cover 136. The filter frame 134 in turn is attached to the air intake opening 110 in the underside of the viewing hood 11. For this purpose, for example, one or more fixed pins or hooks (not shown) may be provided on the rear side of the individual filter devices 130. At the front of the filter devices 130 may then be provided corresponding fastening means 137, for example in the form of retractable pins or hooks.

In the illustrated embodiment in FIG FIG. 4 the filter assembly 13 is not connected to the top of the viewing hood 11. However, the air outlet opening 135 of the filter device abuts against the passage opening 111 of the viewing hood 11. As a result, the interior of the viewing hood 11 is delimited from the air guide 133 of the filter assembly 13. Via the air outlet opening 135 and the passage opening 111, air can thus pass from the air guide region 133 into the fan housing 120, in which the fan 120 is provided.

During operation of the extractor hood 1, impurities will thus accumulate on the filter element or filters 131 of the filter arrangement 13 and on the inside of the air guide elements 132 which faces the air guide space 133. For cleaning, the entire filter arrangement 13 can be removed as a part or at least in each case the individual filter devices 130 of the filter arrangement 13 in each case as a unit from the extractor hood 1 and in particular the viewing hood 11. In this case, the filter element 131 is taken out of the extractor hood 1 together with the filter cover 136, which comprises the filter frame 134 and the air guide element 132. This is in FIG. 5 indicated schematically.

The thus removed filter device 130 or filter devices 130 can be cleaned, for example, in a dishwasher.

As is clear from the FIG. 5 can be seen, consists of the viewing hood in the embodiment shown exclusively from the outer panel. An inner lining of the viewing hood is not required in the extractor hood 1 according to the invention, since the one or more of the air guide elements 132 of the filter assembly 13 take over this function.

In FIG. 6 is a schematic sectional view of another embodiment of a filter assembly 13 according to the invention shown. Notwithstanding the in FIGS. 4 and 5 shown embodiment is in the embodiment of the filter assembly 13 after FIG. 6 a filter frame 134 is provided, which extends along the side of the filter element 131 and on the underside of the filter element 131 has an inwardly bent edge. The filter element 131, which in FIG. 6 is present as a frameless filter element 131 is thus held in the filter frame 134 and can be inserted, for example, in this inseparably connected, for example, injected. The further construction of the filter assembly 13 corresponds to that in the FIGS. 4 and 5 shown embodiment. However, in FIG. 6 the attachment means 137, which is preferably provided in the region of the filter element 131 is not shown. But is also preferred in the embodiment according to FIG. 6 a fastening means 137, for example in the form of retractable locking pins provided.

In FIG. 7 a further embodiment of a filter assembly 13 according to the invention is shown in a schematic sectional view. This embodiment corresponds to the in FIG. 6 shown embodiment and differs from this only by the filter element 131 used. In the embodiment according to FIG. 7 the filter element 131 is a filter element 131 with element frame 1310. Also in this embodiment, the filter element 131 is held over the element frame 1310 in the filter frame 134 and can for example be inserted into this or inextricably linked thereto, for example injected. Also fasteners 137 are preferably provided on this embodiment of the filter assembly 13, in the FIG. 7 but not shown.

In the present invention, for example, an extractor hood in the form of a so-called box hood, wherein the viewing hood has a box shape can be used. This box hood can be configured without a so-called inner frame, that is, in the field of the viewing hood only from the outer wall of the viewing hood - possibly with light bar and controls - exist. In such an extractor hood, the filter assembly according to the invention can be introduced or inserted from below.

With the filter assembly according to the invention, the problem can be addressed that experience has shown that the majority of the fat contained in the vapor is collected in the filter fabric, but the rest of the fat passes through the filter and partly precipitates inside the hood. To prevent this, according to the invention, the filter material, which may also be referred to as filter medium, in the size of a current or conventional filter element with a filter cover, which may also be referred to as a hood-like apron, preferably inseparably connected to a kind of cartridge. This apron is designed under aerodynamic aspects. Viewed systemically, there are preferably three differently shaped filter devices according to the invention, which may also be referred to as cartridges. In particular, preferably a left, a middle and a right filter device is provided.

In this case, for example, a left and a right filter cartridge together in a 60cm hood, that is a hood with a width of the viewing hood of 60 cm, be installed.

The three different filter cartridges fit together, for example, in a 90cm hood and two middle and the respective side filter cartridges, a 120cm hood can be displayed.

With the present invention a number of advantages are achieved. In particular, the use of the filter arrangement according to the invention facilitates the cleaning of, for example, standard / design hoods and has an increased grease filter property. In particular, no cumbersome cleaning of the hood interior is necessary because it can no longer pollute. The filter element can be cleaned in the dishwasher together with the soiled filter cover, which is also referred to as an apron.

In addition, the noise can be reduced because dishwashing machine-resistant insulating material with in the air guide, which can also be referred to as a filter room or filter interior, can be introduced, can be introduced.

In comparison to today's filters, a better filter efficiency is also to be achieved, since more grease settles in the apron belonging to the filter device than on the filter element alone.

LIST OF REFERENCE NUMBERS

1

Hood

10

fireplace

11

Viewing cover

110

air intake opening

111

Port

12

Fan

120

fan housing

13

A filter assembly

130

filter means

131

filter element

1310

element frame

132

air guide

1320

recess

1321

web

1322

cover part

1321

web

133

air conduit

134

filter frame

135

air outlet

136

filter cover

137

fastener

Claims (11)

1. Filter assembly for an extractor hood (1) which has at least one filter device (130) with at least one filter element (131), wherein the filter device (130) has a filter cover (136) for the at least one filter element (130) comprising at least one air guide element (132) connected to the filter element (131), wherein an air guide space (133) is formed between the top of the at least one filter element (131) and the air guide element (132), the filter device (130) has fastening means (137) for releasably securing the filter device (130) to an extractor hood (1) and wherein at least in the region of the air guide element (132) the filter cover (136) serves for the targeted air guidance of air from the top of the filter element (131) to an air outlet opening (135) of the filter assembly (13), characterised in that the filter device (130) is a pre-installed unit and that the filter element (131) is non-releasably connected to the filter cover (136) of the filter device (130).
2. Filter assembly according to claim 1, characterised in that the fastening means (137) for releasably securing the filter device (130) to the extractor hood (1) are provided on the filter device (130) in the region of the filter element (131).
3. Filter assembly according to one of claims 1 to 2, characterised in that the air guide element (132) extends from at least part of the edge of the filter element (131) upwards and is preferably at least partially aligned at an incline to the surface of the filter element (131).
4. Filter assembly according to one of claims 1 to 3, characterised in that the air guide element (132) covers part of the surface of the filter element (131) in a vertical projection onto the filter element (131) and at least one recess (1320) is provided in the air guide element (132) which forms at least part of an air outlet opening (135) of the filter assembly (13).
5. Filter assembly according to one of claims 1 to 4, characterised in that the air guide element (132) extends from at least one edge, preferably from at least two edges, of the filter element (132).
6. Filter assembly according to one of claims 1 to 5, characterised in that the filter cover (136) comprises a filter frame (134) and the air guide element (132) is configured integrally with the filter frame (134).
7. Filter assembly according to one of claims 1 to 6, characterised in that an insulating material is provided at least in some areas in at least one filter device (130).
8. Extractor hood, characterised in that a filter assembly (13) according to one of claims 1 to 7 is arranged in the extractor hood.
9. Extractor hood according to claim 8, characterised in that a filter assembly (13) with at least two filter devices (130) is arranged in the extractor hood (1), wherein the filter devices (130) lie adjacent to each other and the air guide spaces (133) of the at least two filter devices (130) merge into each other.
10. Extractor hood according to one of claims 8 or 9, characterised in that two lateral filter devices (130) and one central filter device (130) are provided and the lateral filter devices (130) differ at least in their shape from the central filter device (130).
11. Extractor hood according to one of claims 8 to 10, characterised in that it comprises a screen (11) whose body is formed exclusively from the outer material of the screen (11) and the filter assembly (13) is releasably secured in the screen (11).

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