EP3018421A1 - Tolerance compensation of the filters - Google Patents

Abstract

Filter device (1) comprising a housing device (2) with a receiving section (3) for at least two filter devices (4, 5, 21), wherein at the receiving section (3) in the inserted state of the filter devices (4, 5, 21) a filter surface ( 6) is formed. The filter device (1) comprises a cover device (50) and / or an adjusting device (7) which is suitable and designed to bring the filter devices (4, 5, 21) together to form a substantially closed filter surface (6).

Description

The present invention relates to a filter device with at least one filter surface. The filter device comprises at least one housing device with at least one receiving section for at least two filter devices. In this case, the filter surface is formed on the receiving portion in the inserted state of the filter devices. The filter device according to the invention can be designed in particular as a fan module or an extractor hood or can provide at least part of a fan module or an extractor hood.

Cooker hoods are often provided over hotplates to suck off the boiling swirls rising during cooking. The rising vapor is then freed in particular of fatty components, the purified air is discharged either as exhaust air from the kitchen or blown in a recirculation mode back to the kitchen.

As a rule, the largest possible filter surfaces are preferred in order to provide the best possible filter effect. Then, depending on the structure of the housing, often several adjacent grease filters form a common filter surface. It is important with several filters that they connect flush with each other so that no gaps or gaps between the individual grease filters are created.

Then fat-laden cooking fumes could get through this column inside the hood, pollute them and then blown unfiltered from the hood again.

The grease filters are adapted to the size of a specific area of the cooker hood. However, manufacturing tolerances may cause the used grease filters together not to cover the entire filter surface. Then, these tolerances can create free spaces or gaps between the individual grease filters. However, this should be avoided. To avoid the problem of gap formation, one could specify the manufacture of the parts used. However, a lower tolerance causes much higher manufacturing costs.

It is therefore the object of the present invention to provide a filter device in which it is ensured in a simple manner that a closed filter surface is provided.

This object is achieved by a filter device with the features of claim 1. Preferred developments of the invention are the subject of the dependent claims. Further advantages and features of the invention will become apparent from the embodiments.

The filter device according to the invention comprises at least one housing device with at least one receiving section for at least two filter devices. In this case, a filter surface is formed on the receiving portion in the inserted state of the filter means. At least one adjusting device and / or at least one cover device are associated with the receiving section, which is suitable and designed to bring the filter devices together to form a substantially closed filter surface.

According to the invention, a filter device is understood in particular to be an extractor hood or a part thereof. A filter device can also be provided by a fan module or form part of the fan module.

A filter device according to the invention is to be understood in particular as meaning a grease filter which is preferably removable and re-insertable on the receiving section. The filter surface is formed in particular by the filter devices. In this case, two or even more filter devices can be arranged next to one another or else adjacent, so that a larger filter surface is composed of a plurality of filter devices.

The fact that the filter surface is essentially closed means, in particular, that a completely closed filter surface is made available. In this case, according to the invention, closed means in particular that the individual filter devices are so close to one another that no gap formation occurs between the individual filter devices. In this case, the individual filter devices in the receiving section are oriented in particular in such a way or positioned by the adjusting device that the filter devices are preferably substantially flush with each other, so that no gap is formed through which ascending vapor could pass unfiltered. In particular, according to the invention, the term "closed" also means that there is no formation of a flow-permeable gap between the individual filter devices. Covering means are arranged on the frame sections of adjacent filter devices and optionally on the frame sections of the filter devices arranged in the receiving section, whereby a difference between the longitudinal extent and the filter device between the filter device and receiving section is covered, so that a flow-permeable gap is substantially shortened or no flow-permeable gap is formed through which ascending vapor could pass unfiltered.

Reducing the tolerance-related gap ensures that cooking fumes contaminated with oils and fats can no longer enter unhindered - and therefore no longer unfiltered - into the extractor hood. As a result, the Fettabscheidegrad is increased and reduces the pollution inside the hood, whereby the cleaning effort decreases.

To the filter surface is preferably followed by a suction, which usually comprises at least one blower device. By means of such a fan, the cooking fumes rising from a cooking location are then sucked through the filter devices into the interior of the filter device. As a result, the vapor is freed in particular of fatty components.

The filter device according to the invention offers many advantages. A considerable advantage is that a filter surface consisting of a plurality of filter devices is formed on the receiving section, which is substantially closed. By providing a plurality of filter devices, a large filter surface can be formed even with a receiving section which is difficult to access or a partially installed receiving section. In this case, the individual filter devices can be positioned relative to one another by the adjusting device or by a plurality of adjusting devices such that no gaps are formed between the individual filter devices and / or positioned relative to one another by the covering device or by a plurality of covering devices such that there is no gap between the individual filter devices Column arise.

Thus, manufacturing tolerances of both the receiving area and the individual filter devices can be compensated effectively by one or more adjusting devices and / or one or more covering devices. This can reduce or maintain the manufacturing costs, since the individual parts do not have to be manufactured with a lower tolerance.

Preferably, the receiving portion has a longitudinal extent and also the filter devices each have a longitudinal extent. In this case, the covering device and / or the adjusting device are suitable and designed to compensate for at least a difference between the sum of the longitudinal extents of the filter devices and the longitudinal extent of the receiving section. Although the size of the individual filter devices is adapted to the size of the receiving section. Nevertheless, manufacturing tolerances may mean that the filter devices together have a smaller longitudinal extent than the longitudinal extent of the receiving section. Then could In the worst case, the filter devices do not lie flush against one another, as a result of which a gap may arise between at least two filter devices.

The adjusting device ensures that, for example, differences in the longitudinal extent occurring due to manufacturing tolerances are compensated in such a way that no gap arises between the filter devices, so that a closed filter surface is made available. The covering device ensures that, for example, differences in the longitudinal extent occurring due to manufacturing tolerances are compensated such that a possible gap between the filter devices is covered, so that a closed filter surface is made available.

Particularly preferably, the adjusting device is assigned to the housing device. In such an advantageous embodiment, the adjusting device is provided on the housing device and in particular on the receiving portion of the housing device. This makes it possible, inter alia, that all filter devices can be configured the same, since the adjusting device is provided on the housing device and not on one or more filter devices.

In advantageous developments, the receiving section has at least one upper contact surface and at least one lateral contact surface for supporting the filter devices. Through these two contact surfaces, a kind of collar is provided on the housing device or on the receiving section, in which the filter devices can be used. In this case, the filter devices are based in expedient embodiments against the contact surfaces, wherein a fixation of the filter devices can be achieved via known attachment mechanisms. The filter devices z. B. are hooked on one side and then fixed to the other side by means of a snap closure or other locking on the receiving portion.

Preferably, the upper and lower abutment surface at least in sections, the receiving portion formed circumferentially. As a result, a particularly good investment of the individual filter devices is made possible on the receiving portion.

Preferably, the adjusting device is associated with at least one lateral contact surface. In this case, the adjusting device may in particular be assigned to the left and / or the right lateral contact surface. Preferably, the adjusting device is associated in particular with such a lateral contact surface, that a filter device applied to the adjusting device can be displaced by means of the adjusting device in the direction of an adjacent filter device.

Particularly preferably, at least two adjusting devices are provided, wherein the adjusting devices are provided on opposite lateral contact surfaces. In this case, the two adjusting devices are provided in particular on the left and the right side abutment surface. The provision of adjusting devices on at least two sides of the receiving section ensures that the individual filter devices are arranged distributed symmetrically in the receiving section.

Preferably, the adjusting device comprises at least one spring device. Such a spring device can effectively compensate for any difference between the longitudinal extent of the receiving section and the sum of the longitudinal dimensions of the filter devices. An otherwise possibly resulting gap can then be avoided in that the spring device presses at least one filter device in the direction of the adjacent filter device, whereby the two filter devices lie flush against each other. This creates a substantially completely closed filter surface.

In preferred embodiments, the spring device is manufactured in one piece with the housing device. In this case, the adjusting device or the spring device is in particular made in one piece with the receiving portion. Thus, a spring device can be provided in a simple manner, without having to attach separate parts to the housing device.

Preferably, the spring device is provided by at least one perforation in the housing device. It is thus achieved that the region of the housing device delimited by the perforation can deform in particular outwards.

Preferably, the adjusting device comprises at least one spacer device. Such a spacer device serves, in particular, to compensate for a gap, which may arise as a result of manufacturing tolerances, between at least two filter devices.

In this case, the spacer device particularly preferably comprises at least one plastic part. By such a plastic part, a certain distance can be bridged well, with the design of plastic a particularly gentle investment of the filter device is made possible on the adjusting device.

The spacer device preferably comprises at least one fastening section and at least one spacer section. The spacer device can then preferably be received on the spring device by means of the fastening section. Preferably, the same Distance section tolerances that would lead to a gap between two filter devices.

For this purpose, the spacer section particularly preferably has a thickness which is adapted to the largest difference in the longitudinal dimensions to be assumed. This is particularly the case when an adjusting device is provided only on one side of the receiving portion. If adjusting devices are provided on both sides of the receiving section, the thickness of the spacer sections is preferably corresponding to in each case half of the largest difference to be assumed between the longitudinal expansions.

In preferred developments, the spacer device is accommodated on the spring device. For this purpose, the spring device in particular has a receptacle for the spacer device. Such a receptacle can be provided in a simple embodiment by a passage opening, in which preferably the attachment portion of the spacer device can be accommodated.

It has proved favorable that the at least one covering device comprises at least one covering element which is detachably arranged on the housing device and / or on at least one frame section of one of the filter devices. This makes it possible for the user to easily remove the filter devices of the housing device and all parts, in particular the filter devices and the covering, easy to clean, for example in a dishwasher.

It is envisaged that the at least one covering device has at least one holding device for the covering element, wherein the holding device is fastened to the housing device and the covering element is detachably connected to the holding device. Furthermore, it is provided that the at least one covering device comprises at least one connecting device, wherein the covering element is held detachably by means of the connecting device to the at least one holding device and / or to the at least one frame section.

The cover member has a width which corresponds to at least one largest difference of the longitudinal dimensions to be assumed, preferably the frame width of a frame portion, in a particularly preferred manner corresponds to twice the frame width of a frame portion. As a result, a sufficient overlap and a secure closure of optionally resulting between two filter devices gap is ensured.

Preferably, the at least one connecting device has two mutually opposite connection partners, wherein a first of the connection partners is arranged on a frame section and / or on a cover element. Another of the connection partners is arranged on a frame section and / or on a holding device.

It has proved to be particularly favorable that at least one of the connection partners is a permanent magnet and the associated other of the connection partners either one of this permanent magnet magnetically attractable material or magnetically attractable by this permanent magnet further permanent magnet with opposite polarity.

It is equally favorable that at least one of the connection partners is a groove with a latching projection and the associated other of the connection partner is an arranged in this groove spring with a latching projection. Preferably, the spring is an elongated, in particular integrally formed with the cover, profile. However, the spring can also be designed as a pin. For improved retention of the connection, it is favorable that the groove and / or the at least one latching projection of the groove and / or the at least one latching projection of the spring is elastically deformable.

The execution of the connection means by means of a magnetic or locking mechanical coupling allows the user to make and dissolve a tool without tools. This facilitates the handling of the components and thus the handling of the entire filter device.

Preferably, the frame sections of the filter devices and optionally also at several points of the receiving section connecting means are provided at several points. In this case, in particular in the case of two adjacently arranged filter elements, the connection partners are arranged in pairs opposite one another. By using, for example, a permanent magnet in at least one paired connection partner, it is possible for the filter devices to attract each other and thus reduce the gap between the filter devices. In the connection partners at the connection points of filter device and receiving portion, however, it has proven to be favorable that both connection partners are designed as permanent magnets, which are aligned with respect to their polarity such that the filter device repels the receiving portion. Alternatively, individual or all connecting devices between two adjacent filter devices can also be designed tongue and groove. Further advantages and features of the present invention will become apparent from the embodiments, which are explained below with reference to the accompanying figures.

Figur 1

eine rein schematische Darstellung einer erfindungsgemäßen Filtervorrichtung in einer perspektivischen Ansicht mit eingesetzten Filtereinrichtungen;

Figur 2

eine rein schematische Darstellung einer ersten Ausführungsform der erfindungsgemäßen Filtervorrichtung in einer perspektivischen Ansicht mit einer Gehäuseeinrichtung ohne eingesetzte Filtereinrichtungen und Justierelementen;

Figur 3

die Ansicht gemäß Figur 2 mit eingesetzten Distanzeinrichtungen;

Figur 4

eine rein schematische Darstellung der Wirkungsweise der Justiereinrichtungen; und

Figur 5

eine rein schematische Darstellung einer Distanzeinrichtung in einer perspektivischen Ansicht;

Figur 6

eine rein schematische Darstellung einer zweiten Ausführungsform der erfindungsgemäßen Filtervorrichtung mit Abdeckeinrichtungen;

Figur 7

eine rein schematische Darstellung einer ersten Variante der Ausgestaltung der in Figur 6 gezeigten Abdeckeinrichtungen;

Figur 8

eine rein schematische Darstellung einer zweiten Variante der Ausgestaltung der in Figur 6 gezeigten Abdeckeinrichtungen mit Dauermagneten als Teil einer Verbindungseinrichtung;

Figur 9

eine rein schematische Darstellung einer dritten Variante der Ausgestaltung der in Figur 6 gezeigten Abdeckeinrichtung mit Dauermagneten als Teil einer Verbindungseinrichtung;

Figur 10

eine rein schematische Darstellung einer vierten Variante der Ausgestaltung der in Figur 6 gezeigten Abdeckeinrichtungen mit einer Halteeinrichtung;

Figur 11

eine rein schematische Darstellung der in Figur 10 gezeigten Halteeinrichtung in einer perspektivischen Ansicht;

Figur 12

eine rein schematische Darstellung eines Abdeckelements der in Figur 10 gezeigten Abdeckeinrichtung in einer perspektivischen Ansicht;

Figur 13

eine rein schematische Darstellung einer fünften Variante der Ausgestaltung der in Figur 6 gezeigten Abdeckeinrichtung;

Figur 14

eine rein schematische Darstellung einer sechsten Variante der Ausgestaltung der in Figur 6 gezeigten Abdeckeinrichtung;

Figur 15

eine rein schematische Darstellung einer dritten Ausführungsform der erfindungsgemäßen Filtervorrichtung mit Verbindungseinrichtungen in Rahmenabschnitten der Filtereinrichtungen.

In the figures show:

FIG. 1

a purely schematic representation of a filter device according to the invention in a perspective view with inserted filter devices;

FIG. 2

a purely schematic representation of a first embodiment of the filter device according to the invention in a perspective view with a housing means without inserted filter means and adjusting elements;

FIG. 3

the view according to FIG. 2 with deployed distance devices;

FIG. 4

a purely schematic representation of the operation of the adjusting devices; and

FIG. 5

a purely schematic representation of a spacer device in a perspective view;

FIG. 6

a purely schematic representation of a second embodiment of the filter device according to the invention with covering devices;

FIG. 7

a purely schematic representation of a first variant of the embodiment of in FIG. 6 Covering devices shown;

FIG. 8

a purely schematic representation of a second variant of the embodiment of in FIG. 6 shown cover devices with permanent magnets as part of a connecting device;

FIG. 9

a purely schematic representation of a third variant of the embodiment of in FIG. 6 shown covering device with permanent magnets as part of a connecting device;

FIG. 10

a purely schematic representation of a fourth variant of the embodiment of in FIG. 6 Covering devices shown with a holding device;

FIG. 11

a purely schematic representation of in FIG. 10 shown holding device in a perspective view;

FIG. 12

a purely schematic representation of a cover of the in FIG. 10 Covering device shown in a perspective view;

FIG. 13

a purely schematic representation of a fifth variant of the embodiment of in FIG. 6 Covering device shown;

FIG. 14

a purely schematic representation of a sixth variant of the embodiment of in FIG. 6 Covering device shown;

FIG. 15

a purely schematic representation of a third embodiment of the filter device according to the invention with connecting means in frame portions of the filter means.

In FIG. 1 one sees a filter device 1 according to the invention in a purely schematic perspective view from below. The filter device 1 is not limited in terms of their use to a special extractor hood 101 but can be used in wall hoods 100, but also in island hoods and other embodiments. Looking at the underside 24 of the filter device 1, wherein the lamps to be seen in the front region 25 in the installed state of the filter device 1 down to a in FIG. 1 Radiator not shown radiating.

The filter device 1 comprises a housing device 2, which provides a receiving section 3, on which a filter surface 6 can be formed. The filter surface 6 is formed in the embodiment shown here by three filter devices 4, 5, 21, which are arranged side by side in the receiving portion 3. In other embodiments, only two or more than three filter devices may be provided. The filter devices can also be provided in several rows.

In the embodiment shown here, a suction region 35 with a blower device, which sucks ascending cooking swaths through the filter devices 4, 5, 21 into the interior of the filter device 1, adjoins the receiving section 3 or the filter surface 6. The suction area 35 is in the FIG. 6 shown. The blower device is not shown in detail in the figures. The blower device can also be designed as an external blower outside the extractor hood.

The filter devices 4 are designed as a grease filter 26, which each have a frame section 27 and a filter section 28. The grease filters 26 are hooked in the embodiment shown here on one side 31 in the receiving portion 3. On the other side 32, a fastening element 29 is provided, which is designed here as a snap closure 30.

The receiving portion 3 has a longitudinal extent 8, which in the embodiment shown here corresponds approximately to three times the longitudinal extent of the three filter devices 4, 5, 21.

It is advantageous if the individual longitudinal extensions 9, 10, 22 of the individual filter devices 4, 5, 21 add to the longitudinal extent 8 of the receiving portion 3. Thus, it can be ensured that the individual filter devices 4, 5, 21 lie substantially flush against each other, so that a substantially completely closed filter surface 6 is provided. In particular, it must be ensured that no gap can form between the filter elements 4, 5, 21, as a result of which ascending cooking puffs could pass unfiltered into the housing device 2.

Due to manufacturing tolerances, however, it is possible that a difference 11 between the longitudinal extent 8 of the receiving portion 3 and the sum of the longitudinal dimensions 9, 10, 22 of the filter means 4, 5, 21 is formed. Then, depending on the arrangement of the filter devices 4, 5, 21, a gap formation between at least two filter devices 4, 5, 21 could occur.

To avoid this, it is advantageous if the filter devices 4, 5, 21 are pushed together in the direction of the longitudinal alignment 8 of the receiving section in the direction of the center of the receiving section 3. Thus it can be ensured that the filter devices 4, 5, 21 lie flush against each other, so that there is no undesirable gap formation. In the outer region of the receiving section, certain gap dimensions between a filter device 4, 5, 21 and the housing device 2 can be compensated for design reasons. This results inter alia from the contact surfaces 3 substantially circumferential contact surfaces 12, 13 which closer in the Figures 2 and 3 are shown.

Thus, the filter devices 4, 5, 21 are pushed together flush in the direction of the center of the receiving portion 3, 4 adjusting devices 7 are provided in the embodiment shown here. The adjusting devices 7 are provided on the left side 33 and the right side 34 of the housing device 2. In other embodiments, only one adjusting device can be advantageously provided on each side. If no symmetrical alignment of the filter devices 4, 5, 21 within the receiving section 3 is required, only one side 33 or 34 can be equipped with adjusting devices 7 or even only with a single adjusting device 7.

In FIG. 2 is a purely schematic view of the receiving portion 3 of a housing device 2 of a filter device 1 according to the invention in a perspective View shown. For better clarity, only the housing device 2 without the filter devices 4, 5, 21 is shown. Furthermore, an adjusting device 7 is shown in an enlargement.

The housing device 2 has on the receiving portion 3 lateral abutment surfaces 13 and upper abutment surfaces 12, which support the inserted filter devices 4, 5, 21. The upper contact surface 12 is in FIG. 2 directed downwards, as well as in FIG. 2 like in FIG. 1 a view is shown on the lower side of the filter device 1.

By the removed filter devices 4, 5, 21 in particular the view of the contact surface 12 on the left side 33 of the receiving portion 3 is free, on which adjusting devices 7 are provided. The adjusting devices 7 each comprise a spring device 14, which in the embodiment shown here is provided by a perforation 15 in the housing device 2. Thus, the spring device 14 is made in one piece with the housing device 2. In other embodiments, the adjusting device 7 or the spring device 14 may also be provided as a separate part. The spring device 14 has a receptacle 23 for a spacer 16.

In FIG. 3 is the view according to FIG. 2 shown again, wherein in the spring means 14 of the adjusting device 7, a spacer device 16 is inserted. The spacer device 16 is provided here by a plastic part 17 which has a fastening section 18 and a spacer section 19. The spacer 16 is shown in detail in FIG FIG. 5 shown.

In this case, the attachment portion 18 of the spacer 16 is inserted into a receptacle 23 in the spring device 14. The spacer element 16 serves to compensate for a difference 11 between the sum of the longitudinal dimensions 9, 10, 22 of the filter devices 4, 5, 21 and the longitudinal extent 8 of the receiving portion 3.

For this purpose, the spacer section 19 has a thickness 20 which, depending on the embodiment, is adapted to a largest difference 11 to be assumed. If the filter devices 4, 5, 21 or only one of them is made too narrow by manufacturing tolerances, a gap would form in the filter surface 6. In order to prevent this, the outer filter devices 4, 21 are pushed by the adjusting devices 7 into the middle of the receiving section 2 in such a way that the filter devices 4, 5, 21 lie flush against one another and thus form a closed filter surface 6.

Depending on the longitudinal extent 9, 10, 22 of the filter devices 4, 5, 21, the thickness 20 of the spacer portion 19 of the spacer 16, the longitudinal extent of the 8

To restrict recording section 3 too much. Then the spacer element 16 springs together with the spring device 14 to the outside, so that there is always an optimal distance between the housing device 2 and the outer filter devices 4, 21. Thus, a gap formation is effectively avoided.

So that the spacer device 16 can deflect away outward together with the spring device 14, the shape of the spacer device 16 and in particular the shape of the spacer section 19 is adapted to the shape of the spring device 14, so that the spacer device 16 can dive through the lateral contact surface 13 to the outside, so sufficient space for the filter means 4, 5, 21 in the receiving section 3 is available.

In FIG. 4 Two installation situations of filter devices 4, 5, 21 are shown purely schematically, wherein only the filter device 4 is shown in sections.

In the installation situation shown on the left, a maximum difference 11 between the longitudinal extensions 9, 10, 22 of the filter devices 4, 5, 21 and the longitudinal extension 8 of the receiving section 3 is given. Then, the spring device 14 is flush in the lateral contact surface 13 and the spacer 16 or the spacer portion 19 is completely in the receiving portion 3 into it. In this position, the filter device 4 is pushed by the spacer portion 19 in the direction of the center of the receiving portion 3, so that the filter devices 4, 5, 21 abut each other flush.

In the right in FIG. 4 illustrated installation situation, the filter devices 4, 5, 21 made slightly wider, so that only a small gap would arise. Then, the spring device 14 springs away from the outside through the lateral abutment surface 13, so that the spacer device 16 and in particular the spacer section 19 at least partially springs outward. Thus, sufficient space is provided for the filter devices 4, 5, 21 in the receiving section 3.

In FIG. 5 is again purely schematically and exemplified the distance means 16, as shown in FIG. 3 is inserted into the spring device 14. Here, one recognizes the attachment portion 18 and the spacer portion 19. In this case, the spacer portion 19 has a thickness 20, which can be carried out differently depending on the assumed maximum difference 11. In this case, the thickness 20 of the spacer section 19 depends essentially on the expected manufacturing tolerances of both the individual filter devices 4, 5, 21, and on the manufacturing tolerances of the housing device 2. If adjusting devices 3 are provided on both sides of the receiving section, the thickness 20 of the spacer section 19 of the spacer device 16 can be set to half the maximum difference 11 to be expected.

In FIG. 6 one sees a filter device 1 according to the invention in a purely schematic sectional view. Shown are the filter devices 4, 5, 21 and the housing device 2, which provides a receiving portion 3, on which a filter surface 6 can be formed. The filter surface 6 is formed in the embodiment shown here by three filter devices 4, 5, 21, which are arranged side by side in the receiving portion 3.

In the embodiment shown here, a suction region 35 with a blower device, which sucks ascending cooking swaths through the filter devices 4, 5, 21 into the interior of the filter device 1, adjoins the receiving section 3 or the filter surface 6.

In order to provide a substantially completely closed filter surface 6, according to this embodiment it is provided according to the invention that cover devices 50 are arranged on the mutually facing frame sections 27 of two adjacent filter devices 4, 5, 21. This ensures that no flow-permeable gap can arise between the filter elements 4, 5, 21, could pass unfiltered through the ascending cooking puddles in the housing device 2.

In FIG. 7 a purely schematic representation of a first variant of the embodiment covering means 50 is shown. In this variant, covering devices 50 are respectively arranged on the frame sections 27 of a filter device 5. The covering devices 50 are preferably formed integrally with the frame sections 27 or permanently connected to the frame sections 27, for example by means of gluing. The covering devices 50 extend so far beyond the longitudinal extent 22 of the filter element 5 that a gap between two adjacent filter elements 4, 5, 21 is covered by the covering devices 50.

In FIG. 8 a purely schematic representation of a second variant of the embodiment of the covering means 50 is shown. The covering devices 50 are arranged on the underside 24 of the filter device 1 and, as in the first variant, formed integrally with the frame sections 27 or permanently connected to the frame sections 27, for example by means of gluing, welding or riveting. In addition, each of the covering means 50 of the second variant has at least one permanent magnet 56. Each of the permanent magnets 56 is one of the connection partners 54, 55 of a connection device 53. By means of the connection devices 53, the cover devices 50 are applied in a fluid-tight manner to the frame sections 27 of adjacent filter elements 4, 5 or to the housing device 2. In the frame sections 27 adjacent filter elements 4, 5 or in the housing device 2 is provided as another of the connection partners 54, 55 of the connecting device 53 is a permanent magnet 56 arranged opposite to the pole or a magnetic material.

In FIG. 9 is a schematic representation of a third variant of the embodiment of the cover means 50 with permanent magnets 56 shown as part of a connecting device 53. In this variant, the covering means 50 are arranged on a side of the filter elements 4, 5 facing the suction region 35 and rest on the filter elements 4, 5, 21 and / or the receiving section 3. The covering devices 50 which bridge the gap between two adjacent filter elements 4, 5 comprise two permanent magnets 56 each for a connection device with one of the adjacent filter elements 4, 5. The covering devices 50 arranged on the receiving section 3 are positively, flow-tight and translationally movable in at least one direction 62 connected to the housing device 2. In this way, the replacement of the filter elements 4, 5 is facilitated, at the same time the cover means 50 by the force acting on them gravity and in particular by the magnetic force 63 of the permanent magnet 56 equipped with a connecting device 53 after assembly of the adjacent filter element 4, 5 at this flow-tight.

In FIG. 10 is a purely schematic representation of a fourth variant of the embodiment of a cover 50 with a holding device 52 is shown. The covering device 50 comprises a covering element 51 and a holding device 52 for the covering element 51. Further, it is not exposed here how the holding device 51 is fastened to the housing device 2. The cover 51 is detachably connected to the holder 52. For this purpose, a connection device 53 is designed such that a first of the connection partners 54, 55 on the cover 51 and another of the connection partners 54, 55 is arranged on the holding device 52. In this case, the connection partners 54, 55 are designed as a groove 57 with a latching projection 58 and an arranged in the groove 57 spring 59 with a latching projection 58. By mutually undercut latching projections 58 groove 57 and spring 59 are held together. Groove 57 and spring 59 are designed such that they are at least in one direction translationally movable 62. This mobility 62 allows the cover elements 50, which are independent of the filter elements 4, 5, 21, to be deflected during assembly, and that the cover device 50 abuts against the filter elements 4, 5, 21 in the mounted state in a flow-tight manner.

In FIG. 11 a purely schematic representation of the holding device 52 is shown in a perspective view. The holding device 52 has on one side a connection partner 54 designed as a groove 57. On another side, the holding device 52 has a fastening projection 64 for fastening the holding device 52 on the housing device 2, in particular on the receiving portion 3 of the housing device 2.

In FIG. 12 a purely schematic representation of a cover 51 of the cover 50 is shown in a perspective view. The covering element 51 has a connecting partner 55 designed as a spring 59, which is provided for engagement in the groove 57 of the holding device 52.

In the FIGS. 13 and 14 are shown in purely schematic representations, a fifth and a sixth variant of the cover 50. The mobility 62 of the cover 50 is indicated by a double arrow. The covering element 51 of the covering device 50 has a width 60 which corresponds to at least one largest difference 11 to be assumed of the longitudinal extensions 9, 10, 22 of the filter elements 4, 5, 21. In the illustrated variants, the width 60 of the cover 51 is significantly larger. In the in FIG. 13 shown fifth variant corresponds to the width 60 of the cover 51 of the frame width 61 of a frame portion 27. In the in FIG. 14 shown sixth variant, the width 60 of the cover 51 is greater than the two frame widths 61 of the adjacently arranged frame sections 27 plus the largest assumed difference 11th

In FIG. 15 is a purely schematic representation of a third embodiment of the filter device 1 according to the invention with connecting means 53 in frame portions 27 of the filter means 4, 5 and the receiving portion 3 of the housing means 2 is shown. At the connection means 53, at least one of the connection partners 54, 55 is a permanent magnet 56. The associated other one of the connection partners 54, 55 is either a magnetically attractable material of this permanent magnet 56 or a further permanent magnet 56 of opposite polarity magnetically attractable by this permanent magnet 56. According to an advantageous embodiment of this embodiment, the connection partner 54, 55 arranged in the receiving section 3 of the housing device 2 is a further permanent magnet 56 which is magnetically repelled by the permanent magnet 56 in the adjacently arranged filter device 4, 5 and has the same polarity. This ensures that the filter devices 4, 5 in the receiving portion 3 of the housing device 2 center.

LIST OF REFERENCE NUMBERS

1

filter means

2

housing means

3

receiving portion

4

filtering device

5

filtering device

6

filter area

7

adjusting

8th

longitudinal extension

9

longitudinal extension

10

longitudinal extension

11

difference

12

upper contact surface

13

lateral contact surface

14

spring means

15

perforation

16

standoff

17

Plastic part

18

attachment section

19

Distance section

20

Strength

21

filter element

22

longitudinal extension

23

admission

24

bottom

25

lamp

26

grease filter

27

frame section

28

filter section

29

fastener

30

snap lock

31

page

32

page

33

left side

34

right side

35

suction

50

cover

51

cover

52

holder

53

connecting device

54

link partner

55

link partner

56

permanent magnets

57

groove

58

catch projection

59

feather

60

width

61

frame width

62

mobile connection

63

magnetic force

64

fixing projection

100

Lüfterbaustein

101

Hood

Claims (15)

Filter device (1) comprising at least one housing device (2) with at least one receiving section (3) for at least two filter devices (4, 5, 21), each comprising a frame section (27) and a filter section (28), wherein on the receiving section (3 ) in the inserted state of the filter devices (4, 5, 21) a filter surface (6) is formed,
characterized in that
the facing frame portions (27) of two adjacent filter means (4, 5, 21) and / or the receiving portion (3) is associated with at least one covering device (50)
and or
the frame sections (27) of the filter devices (4, 5, 21) comprise connecting devices (53)
and or
at least one adjusting device (7) is associated with the receiving section (3),
which is suitable and designed to merge the filter devices (4, 5, 21) to form a substantially closed filter surface (6). Filter device (1) according to claim 1, characterized in that the receiving portion (3) has a longitudinal extent (8) and that the filter means (4, 5) have a longitudinal extent (9, 10), wherein the adjusting device (7) and / or the covering device (50) is suitable and designed to compensate a difference (11) between the sum of the longitudinal extensions (9, 10) of the filter devices (4, 5, 21) and the longitudinal extension (8) of the receiving section (3). Filter device (1) according to one of the preceding claims, characterized in that the adjusting device (7)
associated with the housing device (2)
and or
at least one spring device (14)
and or
at least one spacer device (16). Filter device (1) according to any one of the preceding claims, characterized in that the receiving portion (3) has at least one upper abutment surface (12) and at least one lateral contact surface (13) for supporting the filter means (4, 5). Filter device (1) according to the preceding claim, characterized in that the upper abutment surface (12) and the lateral abutment surface (13) are at least partially circumferentially formed on the receiving portion (3). Filter device (1) according to one of the two preceding claims, characterized in that the adjusting device (7) is associated with at least one lateral contact surface (13). Filter device (1) according to one of the three preceding claims, characterized in that at least two adjusting devices (7) are provided, wherein the adjusting means (7) on opposite lateral contact surfaces (13) are provided. Filter device (1) according to the preceding claim, characterized in that the spring device (14)
is made in one piece with the housing device (2)
and or
is provided by a perforation (15) in the housing means (2) .. Filter device (1) according to one of the preceding claims 11 or 14, characterized in that the spacer device (16)
at least one plastic part (17)
and or
at least one attachment portion (18) and at least one spacer portion (19)
and or
is received on the spring device (14). Filter device (1) according to any one of the preceding claims, characterized in that the at least one covering device (50) comprises at least one cover element (51), which releasably
on the housing device (2)
and or
is arranged on at least one frame section (27) of one of the filter devices (4, 5, 21). Filter device (1) according to one of the preceding claims, characterized in that the at least one covering device (50) has at least one holding device (52) for the covering element (51), wherein the holding device (51) is fastened to the housing device (2) and the cover element (51) is detachably connected to the holding device (52) and / or
the at least one covering device (50) comprises at least one connecting device (53), the covering element (51) being held detachably on the at least one holding device (52) and / or on the at least one frame section (27) by means of the connecting device (53) , Filter device (1) according to the preceding claim, characterized in that the spacer section (19) has a thickness (20) which corresponds to a largest difference (11) to be assumed for the longitudinal extensions (9, 10, 22) and / or the cover element (51st) ) has a width (60) which corresponds to at least one largest difference (11) to be assumed of the longitudinal dimensions (9, 10, 22), preferably the frame width (61) of a frame portion (27), most preferably twice the width of the frame (61) Frame section (27) corresponds. Filter device (1) according to one of the preceding claims, characterized in that the at least one connecting device (53) has two mutually opposite connection partners (54, 55), wherein a first of the connection partners (54, 55) on a frame section (27) and / / or on a cover element (51) and another of the connection partners (54, 55) on a frame portion (27) and / or on a holding device (52) is arranged. Filter device (1) according to one of the preceding claims, characterized in that at least one of the connection partners (54, 55) is a permanent magnet (56) and the associated other of the connection partners (54, 55) either one of this permanent magnet (56) magnetically attractable material or magnet magnetically attractable further permanent magnet (56) of opposite polarity from said permanent magnet (56),
and or
at least one of the connection partners (54, 55) is a groove (57) with a latching projection (58) and the associated other of the connection partners (54, 55) has a spring (59) which can be arranged in this groove (57) with a latching projection (58 ). Filter device (1) according to one of the preceding claims, characterized in that the groove (57) and / or latching projections (58) are elastically deformable.

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