EP3686496A1 - Vapour hood and method for changing filter units - Google Patents

Abstract

Extractor hood (1) comprising a housing device (2) with a processing section (3) with a round cross section (4) and with an inlet opening (5) for sucking in vapors and with an outlet opening (6) for blowing out treated air. An essentially flow-tight separation device (7) is arranged in the treatment section (3), which divides the treatment section (3) into a lower inlet section (8) and an upper blow-out section (9), a passage (7) in the separation device (7). 26) is provided as a connection between the lower inlet section (8) and the upper outlet section (9). A blower device (10) is arranged in the passage, which sucks in air from the inlet opening (5) and blows it out in the direction of the outlet opening (6). Furthermore, an essentially annular receiving space (11) for receiving at least two filter units (12) is formed in the upper blowout section (9) of the treatment section (3) between the separating device (7) and the outlet opening (6). 13) is accessible in the separating device (7) in order to remove and / or insert the filter units (12) through this recess (13). In the method according to the invention, a filter unit (12) is removed from the receiving space (11) through the recess (13).

Description

The present invention relates to an extractor hood comprising at least one housing device with at least one treatment section with a round cross section. The housing or the treatment section comprises at least one inlet opening for sucking in vapors and at least one outlet opening for blowing out treated air. The present invention also relates to a method for changing filter units in such an extractor hood.

Extractor hoods are often used in kitchens above cooktops to suck in the vapors rising during cooking and in particular to free them of fat components. The cleaned air is then either discharged as exhaust air from the kitchen or blown back into the kitchen in a recirculation mode.

In order to free the rising vapors of fat components, they are usually sucked into the extractor hood by a fan through a fat filter and then either discharged to the outside via a suitable air outlet or led back to the kitchen in recirculation mode. In particular for extractor hoods that are used in recirculation mode, odor filtering is often desired in addition to the removal of fat components. Extractor hoods for recirculation mode are known from the publication EP 2 498 006 A1 and from the publication DE 10 2017 100 855 A1 .

Odor pollution in recirculation mode can be achieved, for example, by means of odor-absorbing and / or neutralizing filters, for example activated carbon filters. For this purpose, the air flow through the fan is passed or pressed through such a filter before it leaves the extractor hood.

However, the problem with all extractor hoods is usually the space required, in particular for such additional filters. A user is not only interested in the satisfactory functioning of the extractor hood, but also in an appealing design. This often reduces the available space very much. In particular, extractor hoods with a round or rounded cross-section or housing, as described in the document DE 10 2012 022 571 A1 or the publication EP 3 163 175 A1 or the publication CN 108 592 116 A are known, often offer very poor or uncomfortable access to the filters. So often they can only poorly or not at all for cleaning or replacement, or used again.

It is therefore the object of the present invention to provide an extractor hood with an essentially round cross section, in which the filters for reducing odor are more accessible. A substantially round cross section is not limited to a circular cross section. Other round or rounded, in particular convex, shapes such as a symmetrical oval or an asymmetrical oval. In this sense, a round cross section is essentially round if at least 50 percent of the cross section circumference is not a straight line.

This object is achieved by an extractor hood with the features of claim 1 and by a method for changing filter units with the features of claim 9. Preferred developments of the invention are the subject of the dependent claims. Further advantages and features of the invention result from the exemplary embodiments.

The extractor hood according to the invention comprises at least one housing device with at least one treatment section with at least one round cross section. The housing device or the processing section has at least one inlet opening for sucking in vapors and at least one outlet opening for blowing out treated air. According to the invention, at least one essentially flow-tight separation device is arranged in the treatment section, which divides the treatment section into at least one lower inlet section with the inlet opening and at least one upper outlet section with the outlet opening. An essentially flow-tight separation device is designed such that a maximum of 10 percent of the air flow to which it is exposed bypasses the separation device as a faulty air flow.

In this case, at least one passage is provided in the separating device as a connection between the lower inlet section and the upper blow-out section, at least one blower device being arranged on the passage, which draws in air from the inlet opening and blows it out in the direction of the outlet opening. Furthermore, in the upper section of the processing section between the separating device and the outlet opening, at least one essentially annular receiving space for receiving at least two filter units is formed, which is accessible at least in sections via at least one recess in the separating device in order to remove the filter units through this recess and / or use. The term essentially ring-shaped is to be understood in such a way that the figurative-technical term ring is not only reduced to a circular ring, but also other basic ring shapes are included. The relationship between the distance between the inside of the ring and the center and the distance between the outside of the ring and the center is also not defined.

The extractor hood according to the invention is, in particular, an extractor hood which is suitable or designed exclusively or alternatively for recirculation mode. The filter units, which can be used in the essentially annular receiving space, are preferably designed as odor filters, and such odor filters, for example activated carbon filters, remove odors from the air that has already been cleaned by grease filters, particularly when the air is blown out back into the kitchen during recirculation mode is advantageous.

The housing device or the processing section have a substantially round cross section, here in particular a round cross section of the processing section which is oriented transversely to the direction of suction. The treatment section preferably has an essentially cylindrical shape, at least in sections. In particular, a dome-shaped configuration of the housing device or of the extractor hood or of the processing section is also preferred. Starting from the above-mentioned definition of an essentially round cross section, an essentially cylindrical shape can also include conical or asymmetrical spatial bodies.

The extractor hood according to the invention is preferably designed as a free-hanging extractor hood, which is arranged, for example, above a cooking island. Attachment of the extractor hood z. B. with wire ropes or the like on the ceiling.

The fact that the blower device is arranged on the passage means, in particular, that the blower device is in direct or indirect operative connection with the opening or the passage, so that the blower device can convey air from the inlet opening to the outlet opening. In particular, the blower device is positioned above the passage on or on the separating device and is preferably attached to the separating device.

The annular receiving space is preferably delimited by the housing device in the blow-out section and the blower device arranged in the blow-out section. The annular receiving space preferably extends around the blower device.

Since the blower device is arranged in the upper blow-out section, the blower device preferably sucks rising vapors through an in or on the

Grease filter arranged in the inlet opening into the extractor hood or into the processing section and presses the air that has already been cleaned of fat components through the filter units arranged in the annular receiving space, which are designed in particular as odor filters. A particularly advantageous air guidance is achieved by means of the blower device.

The recess in the separating device is preferably provided in such a way that the filter units movable in the circumferential direction in the receiving space can be inserted into and removed from the annular receiving space substantially transversely to the radius of the annular receiving space. The specification essentially transverse to the radius is not limited to a strict geometric movement perpendicular to the radius, but includes orientations deviating therefrom in a customary handling space. The tolerance includes a deviation of up to 60 °.

The recess in the separating device, via which access to the annular receiving space is created, is preferably provided so that it can be closed, so that during normal operation of the extractor hood, the entire air flow through the passage in the separating device is reached via the blower device. The recess is only opened when a filter unit is to be removed from the annular receiving space or when a filter unit is to be replaced. After a filter unit has been reinserted into the ring channel or the annular receiving space, the recess can also be closed again by means of a closure device.

As previously stated, at least one grease filter is preferably provided on or in the inlet opening. When flowing through the fat filter, the rising vapors are freed of fat components. Such a grease filter can preferably be accommodated in an optically appealing decorative panel, the grease filter (s) preferably being removed at the same time by removing the decorative panel, so that they can be easily cleaned or replaced.

The extractor hood according to the invention offers many advantages. A considerable advantage is that the separating device forms an upper and a lower section in the processing section, so that the processing section is divided into a suction and a pressure side for the blower device. The fan sucks rising vapors through the grease filters and then pushes the air that is sucked in through the other filter units, in particular through odor filters. This results in a particularly favorable flow behavior. The design of the upper blow-out section is more annular Recording space with the recess for removing and inserting filter units ensures particularly favorable accessibility to the filter units.

At least one driver device is preferably provided in the upper blow-out section in order to displace the filter units within the annular receiving space, in particular in order to move them from an inaccessible area of the annular receiving space to the recess. This achieves a particularly advantageous embodiment in which the filter units can be displaced along the annular receiving space, that is to say essentially transversely to the radius, in particular in the circumferential direction, of the round cross section of the processing section.

Depending on the size, design and number of filter units used in the annular receiving space, access to all filter units is not always possible. And to convey inaccessible filter units to the recess for removing the filter units from the annular receiving space, the driver device is provided.

The displacement of the filter units by means of the driver device can, depending on the configuration, be achieved automatically or automatically and / or manually.

The driver device particularly preferably comprises at least one driver ring and / or at least one driver disk. Such a driving disk or a driving ring can be arranged in particular on the outer edge of the receiving space or radially on the outside in the receiving space. In this case, the filter units preferably come into operative connection with the driver ring or the driver disk, so that the filter units are displaced by moving the driver ring or the driver disk.

For this purpose, the driver ring and / or the driver disk is preferably rotatably arranged in the receiving space. A displacement of the filter units can be achieved by rotating the drive plate or the drive ring.

In expedient developments, the driver ring and / or the driver disk is rotatably received at least in sections on the separating device. The drive ring and / or the drive plate can, for. B. just rest on the separator. However, other types of recording can also be used expediently. For example, the driving ring and / or the driving disk can be accommodated on the separating device via a rail system or comprise other sliding aids or sliding elements, which makes it easier to move the driving ring or the driving disk on the separating device.

The driver device and / or at least one filter unit preferably comprises at least one fastening device. A contact between the driver device and the filter unit is provided by means of such a fastening device, which is preferably designed to correspond between the driver device and the filter unit. The effect of this is that a displacement or rotation of the driving ring or the driving disk or the driving device is accompanied by a displacement of the filter units. Such a fastening device or a fastening between the filter unit and driver device can be achieved, for example, as a hook, driver or as other fastening elements with corresponding recesses. An adhesive connection, in particular a reusable adhesive connection such as Velcro or a corrugated ring or the like, can also be used as a connection between the driver device and filter units.

Particularly preferably, at least one preferably removable closure device is provided for closing the recess in the separating device. It is thus achieved that a fluid-tight separation device is provided except for the passage in the separation device.

In expedient configurations, at least one filter unit is arranged on the closure device. At least one filter unit and the closure device are provided as a common structural unit, so that, depending on the design, the z. B. the last filter unit is used together with the closure device in the annular receiving space.

The method according to the invention is suitable for changing filter units from the annular receiving space of an extractor hood, as described above. At least one filter unit is removed from the exception space through the recess in the separating device.

The method according to the invention also offers the advantages already described above.

Preferably, at least one filter unit is moved within the receiving space to the exception device in the separating device by moving the driver device in order to remove the filter unit.

The method described here describes the removal of a filter unit from the receiving space of an extractor hood according to the invention. When inserting such a filter, the procedure can be carried out in reverse order.

A filter unit is inserted through the recess in the separating device into the receiving space. The filter unit is then moved away from the recess by moving the driver device.

Alternatively, when a filter unit is inserted, it can also be moved manually out of the area of the recess in the separating device. Alternatively, when removing the filter, a filter unit can preferably only be moved in sections by means of the driver device until it can be reached by hand and can then also be pulled by hand to the recess.

In all configurations, the driver device can preferably be motorized and / or operated manually.

The recess in the separating device is preferably released by removing the closing device and / or closed by inserting the closing device.

It is particularly preferred that at least one filter unit is removed and / or inserted together with the closure device. This is possible in particular if at least one filter unit and the closure device form a common structural unit. In particular, it is also achieved that at least one filter unit can be arranged in the region of the recess.

In expedient further developments, the filter unit is inserted into the annular receiving space through the recess in the separating device, the filter unit being displaced away from the recess within the receiving space by pressing against the filter unit. By manually pushing against the filter unit or pushing against the filter unit or by motorized movement of the driver device and a resulting pushing against the filter unit, a filter unit can be moved away from the recess into an otherwise inaccessible area of the receiving space. With manual or motorized pressing against the filter unit used, the filter units previously used can, depending on the design, be conveyed further by means of the newly inserted filter unit if these are not also displaced by means of the driver device.

Further advantages and features of the present invention result from the exemplary embodiment which is explained below with reference to the accompanying figures.

Figur 1

eine rein schematische Darstellung eines Ausführungsbeispiels einer erfindungsgemäßen Dunstabzugshaube in einer perspektivischen Ansicht von oben;

Figur 2

eine rein schematische Darstellung eines Ausführungsbeispiels einer erfindungsgemäßen Dunstabzugshaube in einer perspektivischen Ansicht von unten;

Figur 3

eine rein schematische Darstellung eines Ausführungsbeispiels einer erfindungsgemäßen Dunstabzugshaube in einer Schnittansicht von der Seite;

Figur 4

eine rein schematische Darstellung eines Ausführungsbeispiels einer erfindungsgemäßen Dunstabzugshaube in einer perspektivischen Explosionsansicht;

Figur 5

eine rein schematische Darstellung eines Ausführungsbeispiels einer erfindungsgemäßen Dunstabzugshaube in einer perspektivischen Explosionsansicht von oben;

Figur 6

eine rein schematische Darstellung einer Filtereinheit in einer perspektivischen Ansicht;

Figur 7

eine rein schematische Darstellung einer Filtereinheit auf der Verschlusseinrichtung; und

Figur 8

eine rein schematische Darstellung von Filtereinheiten auf einer Mitnehmereinrichtung und einer Verschlusseinrichtung mit Filtereinheit in einer perspektivischen Ansicht.

The figures show:

Figure 1

a purely schematic representation of an embodiment of an extractor hood according to the invention in a perspective view from above;

Figure 2

a purely schematic representation of an embodiment of an extractor hood according to the invention in a perspective view from below;

Figure 3

a purely schematic representation of an embodiment of an extractor hood according to the invention in a sectional view from the side;

Figure 4

a purely schematic representation of an embodiment of an extractor hood according to the invention in a perspective exploded view;

Figure 5

a purely schematic representation of an embodiment of an extractor hood according to the invention in a perspective exploded view from above;

Figure 6

a purely schematic representation of a filter unit in a perspective view;

Figure 7

a purely schematic representation of a filter unit on the closure device; and

Figure 8

a purely schematic representation of filter units on a driver device and a closure device with filter unit in a perspective view.

In the Figures 1 and 2 An embodiment of an extractor hood 1 according to the invention is shown in two different perspective views, once from above and once from below.

In the exemplary embodiment shown here, the extractor hood 1 is designed as a free-hanging extractor hood 1, which can be attached to the ceiling here, for example above a cooking island, using three wire cables 27.

The embodiment shown of an extractor hood 1 according to the invention has a housing device 2 with an upper housing cover 29, within which a

Processing section 3 is made available for processing sucked-in vapors. The preparation section 3 has a round cross-section 4, a round cross-section being considered here essentially transversely to the direction of suction.

In general, the extractor hood shown here has an essentially dome-shaped design. The basic shape of the extractor hood 1 is essentially based on a hemisphere or a spherical section.

The cooker hood 1 paid is designed for recirculation mode, for which purpose the cooker hood 1 has an inlet opening 5, via which rising vapors are sucked into the cooker hood 1. Furthermore, several outlet openings 6 are provided on the top of the extractor hood, through which the treated air is blown back into the kitchen.

In the exemplary embodiment shown here, a decorative panel 20 is arranged in the region of the inlet opening 5, by means of which one or more grease filters 21 are arranged in the inlet opening 5. So one is in the Figures 1 and 2 Blower device 10, not visible, said vapors through the grease filters 21, so that the interior of the extractor hood 1 is flowed through by grease-free air.

In Figure 3 a purely schematic cross section through an embodiment of an extractor hood 1 according to the invention is shown. It can be seen here that the extractor hood 1 also has an essentially dome-shaped configuration in this exemplary embodiment, the cross section 4 of the processing section 3 being round.

It can also be seen that the treatment section 3 within the extractor hood 1 is divided into a lower inlet section 8 and an upper outlet section 9 by means of a separating device 7. The separating device 7 is designed to be essentially flow-tight. However, in the separating device 7 in the exemplary embodiment shown, a passage 26 is provided, via which a fluidic connection between the lower inlet section 8 and the upper outer blowing section 9 is provided.

In the exemplary embodiment shown here, a blower device 10 is provided above this passage 26, by means of which air is sucked in through the grease filter 21 into the lower inlet section 8 and then blown back into the kitchen via the upper outlet section through the outlet openings 6. The air flow inside the extractor hood is indicated purely schematically by means of the dashed arrows.

The arrangement of the blower device 10 in the upper blow-out section 9 creates an essentially annular receiving space 11 between the separating device 7 and the outlet openings 6, in which, as explained in more detail below, a plurality of filter units 12 can be arranged, which are designed here as odor filters 28. The blower device 10 then blows the air, which has already been freed of fat components, into the upper blow-out section and presses the air back through the filter units 12 through the outlet openings 6 into the kitchen.

In Figure 4 a purely schematic embodiment of an extractor hood 1 according to the invention is shown in a perspective view from below, the decorative panel 20 together with the grease filters 21 being shown removed from the inlet opening 5 in order to provide an insight into the lower inlet section 8 and the separating device 7.

In Figure 4 to recognize that a separation device 7 is provided within the processing section 3, which is basically designed to be flow-tight. In the middle there is a passage 26 through which air can be conveyed into the upper blow-out section 9 or into the annular receiving space 11 by means of the blower device 10 arranged above it.

In order to insert or remove filter units 12 in the upper blow-out section 9 or in the annular receiving space 11, a recess 13 is provided in the separating device 7, via which a user can easily reach the filter units 12.

Due to the filter units 12 which are adapted to the annular receiving space 11, these can be fed to the annular receiving space 11 via the recess 13 and then moved transversely to the radius of the processing section 3 into an otherwise inaccessible area 19 of the annular receiving space 11.

When all of the filter units 12 provided have been inserted into the annular receiving space 11, the recess 13 can be closed by means of a closure device 18, so that the only flow connection between the upper section 9 and the lower section 8 is the passage 26.

In the exemplary embodiment shown here, the last filter unit 12 is inserted into the annular receiving space 11 together with the closure device 18. For this purpose, this filter unit 12 and the closure device 18 are provided as a common structural unit, the filter device 12 being screwed onto the closure unit 18 here.

In order to move or move the filter units 12 from the otherwise inaccessible areas 19 to the recess 13, in the exemplary embodiment shown here a driver device 14 is provided, which here comprises a driver ring 15 or a driver disk 16. This driver ring 15 is arranged radially on the outside in the annular receiving space 11, the filter units 12 being displaced in the direction of rotation by rotating the driver ring 15 via the separating device 7. Thus, a displacement of the filter units 12 can be achieved via the driving ring 15 or a driving disk 16, even if the filter units 12 themselves cannot be reached.

In Figure 5 is the embodiment according to Figure 4 shown in a perspective view from above, here the in Figure 1 shown upper housing cover 29 is not shown in order to be able to look into the upper blow-out section 9 or the annular receiving space 11 from above.

Here too, the recess 13 can be seen, via which filter units 12 can be fed to the annular receiving space 11 and removed therefrom. This view also shows the closure device 18, which is designed as a common structural unit, together with that with a filter unit 12.

It can also be seen that the inside of the decorative panel 20 is divided into four sections, in each of which a grease filter 21 is arranged. The decorative panel 20 also includes fastening tabs 30, via which the decorative panel 20 engage in a corresponding receptacle in the lower inlet section 8 of the processing section 3. A lock 31 is also provided.

In Figure 6 A purely schematic perspective view shows a filter unit 12, which here comprises a filter frame 22 and a filter element 23, the filter element 23 being designed here as an odor filter 28.

In Figure 7 it is shown again that a filter unit 12 can be formed with the closure device 18 as a common structural unit, the filter frame 22 of the filter unit 12 being fixed on the closure device 18 or being screwed thereto.

In Figure 8 the driver device 14 is shown purely schematically, which is designed here as a driver ring 15 or as a driver disk 16. In the installed state, this driver device 14 or the driver disk 15 rests on the separating device 7 in the upper blow-out section 9 in the exemplary embodiment shown here. How to can be seen, the driver ring 15 is dimensioned such that it lies in the outer region of the annular receiving space 12.

If a filter unit 12 is inserted through the recess 13 into the annular receiving space 11, the filter units 12 engage in the driver device 14. For this purpose, a fastening device 17 is provided, which in the exemplary embodiment shown here has a fastening element 25 on the filter unit 12 or on the filter frame 22 and a fastening element 24 on the driver device 14.

Here hook-like structures are provided as fastening element 25 on the filter units 12, which engage in fastening elements 24 designed as recesses in the driving ring.

It is hereby achieved that when the driver ring 15 rotates or is displaced, the filter units 12 engaging in the latter are also displaced, so that they can be moved to the recess 13 in the separating device 7.

When the filter units 12 are inserted into the annular receiving space 11 through the recess 13, they can also be displaced again by means of a rotary movement of the driver device 14 or the driver ring 15.

When it is inserted, however, it is also possible for the filter units 12 to be pushed or pushed in by hand from the recess 13 transversely to the radius of the processing section 3 into the annular receiving space 11. Filter units 12 that have already been used are conveyed further by inserting the subsequent filter unit and can be moved into an otherwise inaccessible area 19.

In all configurations, it is possible to design the extractor hood 1 or the driver device 14 in such a way that it can be moved manually and / or motorized or automatically in order to displace the filter units 12 within the annular receiving space 11.

Reference list

1

Extractor hood

2nd

Housing device

3rd

Processing section

4th

cross-section

5

Inlet opening

6

Outlet opening

7

Separator

8th

lower section

9

upper section

10th

Blower device

11

annular receiving space

12th

Filter unit

13

Recess

14

Carrier device

15

Drive ring

16

Drive plate

17th

Fastening device

18th

Locking device

19th

inaccessible area

20

Decorative panel

21

Grease filter

22

Filter frame

23

Filter element

24th

Fastener

25th

Fastener

26

passage

27

Wire rope

28

Odor filter

30th

Mounting tab

31

Interlock

Claims (13)

Extractor hood (1) comprising at least one housing device (2) with at least one treatment section (3) with a round cross section (4) and with at least one inlet opening (5) for sucking in vapors and with at least one outlet opening (6) for blowing out treated air ,
characterized,
that at least one flow-tight separation device (7) is arranged in the treatment section (3), which separates the treatment section (3) into at least one lower inlet section (8) with the inlet opening (5) and at least one upper outlet section (9) with the outlet opening (6 ), wherein in the separating device (7) at least one passage (26) is provided as a connection between the lower inlet section (8) and the upper blow-out section (9), at least one blower device (10) being arranged on the passage, which air sucked in by the inlet opening (5) and blows it out in the direction of the outlet opening (6),
and that in the upper blow-out section (9) of the treatment section (3) between the separating device (7) and the outlet opening (6) at least one annular receiving space (11) for receiving at least two filter units (12) is formed, which has at least one recess (13) is accessible at least in sections in the separating device (7) in order to remove and / or insert the filter units (12) through this recess (13). Extractor hood (1) according to Claim 1, characterized in that at least one driver device (14) is provided in the upper blow-out section (9) in order to displace the filter units (12) within the annular receiving space (11) in order to move them from an inaccessible area (19) of the annular receiving space (11) to move to the recess (13). Extractor hood (1) according to claim 1, characterized in that the driver device (14) comprises at least one driver ring (15) and / or at least one driver disk (16). Extractor hood (1) according to the preceding claim, characterized in that the driving ring (15) and / or the driving disk (16) is rotatably arranged in the receiving space (11). Extractor hood (1) according to one of the two preceding claims, characterized in that the driving ring (15) and / or the driving disk (16) is rotatably received at least in sections on the separating device (7). Extractor hood (1) according to one of the two preceding claims, characterized in that the driver device (14) and / or at least one filter unit (12) comprises at least one fastening device (17). Extractor hood (1) according to the preceding claim, characterized in that at least one closing device (18) is provided for closing the recess (13) in the separating device (7). Extractor hood (1) according to the preceding claim, characterized in that at least one filter unit (12) is arranged on the closure device (18). Method for changing filter units (12) from the annular receiving space of an extractor hood according to one of the preceding claims, characterized in that at least one filter unit (12) is removed from the receiving space (11) through the recess (13). Method according to the preceding claim, characterized in that at least one filter unit (12) is displaced within the receiving space (11) to the recess in the separating device (7) by moving the driver device (14). Method according to one of the preceding method claims, characterized in that the recess (13) in the separating device (7) is released by removing the closing device (18) and / or is closed by inserting the closing device (18). Method according to one of the preceding method claims, characterized in that at least one filter unit (12) is removed and / or used together with the closure device (18). Method according to one of the preceding method claims, characterized in that the filter unit (12) is inserted through the recess (13) in the separating device (7) into the receiving space (11) and that the filter unit (12) within the receiving space away from the recess by pushing against the filter unit.

Images