EP2554918A1 - Device for extracting air from a hob - Google Patents

Abstract

The device (10) has a suction opening (12) for extracting air from a hob (20) and a front plate (11) for closing the extracting device within area adjacent to the suction opening. The front plate directs the extracted air. The front plate has an insulating layer. The insulating layer is arranged between two shells of the front plate. The front plate has L-shaped cross-section in partial region. The front plate is arranged between a cooking level and the suction opening. The insulating layer is made of open pore polyurethane foam.

Description

The invention relates to a device for the extraction of air in a hob. In particular, the invention relates to a table ventilation device, which is arranged next to and in particular behind a hob. It is also called a downdraft extractor.

EP 1 628 077 A1 discloses a suction device for extracting fumes over a cooking plate. The suction device is provided as a separate unit above the cooking plate, wherein the suction opening is located in a plane which is parallel to the plane of the cooking plate.

EP 0 640 798 A1 describes a suction device for suction and cleaning of grill, cooking and cooking fumes and for blowing out purified air. The suction device is arranged under a table top. For damping airborne sound of the suction device, a sound-damping chamber is provided.

In the Fig. 6 is a conventional table ventilation system in front view and FIG. 7 shown in a sectional view. The table ventilation system is provided with the reference numeral 100 and is arranged behind a hob 200, which in a worktop 300 (FIG. FIG. 6 ) is installed a table, not shown. The table ventilation system 100 has a front plate 110, above which a suction opening 120 is arranged, with which air 400 (FIG. FIG. 7 ) above the hob 200 or a cooking pot 500 ( FIG. 7 ) in the direction of the block arrows in FIG. 6 and the white block arrow in FIG. 7 can be sucked. The sucked air 400 flows around the front panel 110 at the rear, that is their side facing away from the hob 200 side. This can lead to a cooling of the front panel 110, which may lead to increased condensation in the front, visible area of the front panel 110 under certain circumstances. The area is in FIG. 6 denoted by the arrow K. Apart from the unsightly visual impression thereby resulting condensation water droplets along the front panel 110 can run down and, for lack of catcher, on the countertop 300 form a puddle.

The object of the invention is to provide an improved device for extracting air in a hob, in which, in particular in a simple manner, condensation formation in the front, visible region of the front panel is prevented.

The object of the invention is achieved by a device for the extraction of air in a hob with the features of claim 1. The device has in a cooktop facing side of the device, a suction opening for sucking air at the hob and a arranged next to the suction opening front panel for closing the device in the area next to the suction and for directing the extracted air, the front panel in particular at their from Hob side facing away from having an insulating layer.

The insulating layer may be configured to isolate a temperature gradient between the hob area and the interior of the device. By the insulating layer, for example, the cooling of the front panel is reduced when it is flowed around by sucked and sucked with the suction air. As a result, the formation of condensate or condensation in the front, visible area of the front panel is reduced.

In the device, one can also speak of a hood or a downdraft for the extraction of kitchen fumes or vapors. The haze, so laden with odor, particles or gases air is sucked out below a kitchen worktop.

Advantageously, the front panel be designed clamshell, wherein the insulating layer between the two shells of the front panel is arranged. In such an embodiment, the front panel is in particular better to clean. In addition, the front panel is more stable than a single-shell version. In addition, the insulating layer can not be easily damaged.

Conceivable is a multi-layered version of the insulating layer or the front panel. Through several layers, an improved insulation effect can be achieved. Preferably, the shell of the bivalve front panel arranged in the device is designed to cover and protect the insulating layer. As a result, the insulating layer is well protected against environmental influences and thus longer lasting. In addition, no deposits of grease or odors can form on the insulating layer. This makes this variant very hygienic.

It is possible that the front plate has an L-shaped cross-section, at least in a partial region, along which L-shaped cross section the likewise L-shaped insulating layer is arranged.

The front panel can be arranged between the cooking surface formed by the cooktop and the suction opening. Here, the front panel can be directly adjacent to the cooking surface formed by the cooktop.

Advantageously, the front panel of the device is removable. As a result, the device has a high ease of use and high ease of maintenance.

Preferably, the insulating layer is suitable for the insulation of airborne sound. As a result, the insulating layer can cause a sound reduction of airborne sound generated by the device. The airborne sound in the immediate vicinity of its point of origin is advantageously attenuated in the device.

The insulating layer can be made of open-pore PU foam.

It is also possible that the insulating layer is surface-sealed. Thus, the durability of the insulating layer can be increased. In addition, no deposits of grease or odors can form on the insulating layer in this variant. This makes this variant very hygienic.

The device may be a table ventilation device, which is installed next to the hob in a table or a kitchen worktop, wherein at least the suction opening and the adjacently arranged front panel of a table top of the table protrudes so that they are located next to the hob.

Further, a household appliance is proposed, in which a hob and a corresponding table ventilation device are integrated in a worktop and between the hob and a suction opening, the front panel is provided above the worktop.

Further possible implementations of the invention also include not explicitly mentioned combinations of features or embodiments described above or below with regard to the exemplary embodiments. The skilled person will also add individual aspects as improvements or additions to the respective basic form of the invention.

Further embodiments of the invention are the subject of the dependent claims and the embodiments of the invention described below.

Figur 1

eine Draufsicht auf ein Kochfeld, neben dem eine Vorrichtung gemäß einem ersten Ausführungsbeispiel angeordnet ist;

Figur 2

eine Seitenschnittansicht der Vorrichtung gemäß dem ersten Ausführungsbeispiel;

Figur 3

eine Detailansicht der in Figur 2 gezeigten Seitenschnittansicht;

Figur 4

eine Seitenschnittansicht der Vorrichtung gemäß einem zweiten Ausführungsbeispiel;

Figur 5

eine Detailansicht der in Figur 4 gezeigten Seitenschnittansicht;

Figur 6

eine Draufsicht auf ein Kochfeld, neben dem eine Vorrichtung gemäß dem Stand der Technik angeordnet ist; und

Figur 7

eine Teilseitenschnittansicht der Vorrichtung gemäß dem Stand der Technik;

The invention with reference to the accompanying drawings and with reference to specific embodiments as exemplary embodiments will be described in more detail. Show it:

FIG. 1

a plan view of a hob, next to which a device is arranged according to a first embodiment;

FIG. 2

a side sectional view of the device according to the first embodiment;

FIG. 3

a detailed view of in FIG. 2 shown side sectional view;

FIG. 4

a side sectional view of the device according to a second embodiment;

FIG. 5

a detailed view of in FIG. 4 shown side sectional view;

FIG. 6

a plan view of a hob, next to which a device according to the prior art is arranged; and

FIG. 7

a partial side sectional view of the device according to the prior art;

In the FIG. 1 For example, an apparatus 10 for extracting air from a hob 20 is shown. The device is arranged next to, and in particular behind, the hob 20, which is installed in a worktop 30 of a not illustrated table or worktop. The device 10 has a front plate 11, above which a suction opening 12 is arranged. To the suction 12, air, which is located in particular on the hob 20, sucked in the direction of the block arrows and thus sucked from the hob 20. The front panel 11 is thus arranged between the suction opening 12 and the table top 30, preferably between the suction opening 12 and the hob 20. Accordingly, the suction opening 12 has a predetermined distance from the hob 20 determined by the front panel 11. With the exception of the suction opening 12, the front panel 11 closes the apparatus 10 on the side facing the hob 20. The device 10 may also be referred to as a table ventilation device. The suction opening 12 has a rectangular cross-section and is oriented vertically.

FIG. 2 shows the construction of the device 10 in more detail. The device 10 has in addition to the front panel 11, which has a front 11 a and a back 11 b, and the suction 12, an insulating layer 13, a housing 14, an eddy current filter 15, an expanded metal filter 16, a collecting tray 17 and a fan box 18 at the foot of Housing 14.

The housing 14 is substantially L-shaped. The white block arrows indicate the path of the air in the device 10, which flows through the device 10 by suction through the suction opening 12. That is, the air flows through the housing 14 from top to bottom in FIG. 2 , On the way through the housing 14, the air flows past the front plate 11 to the eddy current filter 15 serving as a grease filter with the downstream expanded metal filter 16. The eddy current filter 15 and the expanded metal filter 16 are arranged obliquely to the flow direction of the air in the housing 14. In the drip pan 17 fat is collected, which was deposited with the combination of eddy current filter 15 and expanded metal filter 16 from the air. Finally, the fat-cleaned air can be discharged from the device 10 via the fan box 18 at the foot of the housing 14.

The device 10 causes during operation a noise, which is caused by the present in the fan box fan motor and the combination of eddy current filter 15 and expanded metal filter 16. The sound, in other words the sound, propagates in the direction of the black arrow on the fan box 18 and the arrow above the eddy current filter 15 up in FIG. 2 out.

The front panel 11 is fixed to the housing 14. Here, the front panel 11 is preferably easily removable from the housing 14, for example by means of releasable snap closure. The front panel 11 is in FIG. 2 shaped essentially L-shaped. The insulating layer 13 is arranged on the front panel 11 and that on its rear side 11b. Here, the insulating layer 13 has an L-shape. The insulating layer 13 is thus arranged on the side 11 b of the front panel 11, which is directed into the housing 14 of the device 10.

FIG. 3 shows the upper portion of the device 10 in more detail when the device 10 beside, and in particular behind, the in FIG. 1 shown hob 20 is arranged. On the hob 20 is on a cooking level 21, a saucepan 50, from the steam 40, that is, mixed with water droplets mixed air 40 rises, which is sucked to the suction opening 12 of the device 10 and finally sucked by the device 10 into the suction opening 12 , That is, air 40 which is exhausted from the apparatus 10 also includes air or room air mixed with water droplets. The eddy current filter 15, the expanded metal filter 16, the drip pan 17 and the in FIG. 3 not shown fan box 18 are located in the mounted next to the hob 20 device 10 substantially below the cooking level 21, whereas the front panel 11 with insulating layer 13 and the suction opening 12 are above the cooking level 21.

As in FIG. 3 shown in more detail, the L formed by the front panel 11 in the device 10 is virtually upside down. The downwardly projecting leg of the L, when the device 10 is installed in the hob 20, facing the hob 20. Here, the downwardly projecting leg of the L of the front panel 11 is substantially perpendicular to the hob 20, more precisely, the plane formed by it or the cooking plane 21. The foot of the Ls formed by the front panel 11 projects into the housing 14 of the device 10 inside and is slightly down at its end FIG. 3 bent. Different In other words, the front panel 11 has at its foot of its L-shape an elongated end which is bent toward the vertically oriented part of the L-shape. By this shape and by the tapered shape of the housing 14, which is opposite to the suction opening 12, on the one hand sucked into the suction opening 12, air 40 can be deflected in the housing 14 from a substantially horizontal flow direction in a substantially vertical flow direction. In addition, the front panel 11 directs the air 40 on the hob 20 to the suction opening 12. Thus, the front panel 11 also serves to direct the sucked with the device 10 air.

The insulating layer 13 is arranged on the side 11 a of the front panel 11, which faces away from the hob 20 when the device 10 is arranged adjacent to the hob 20. The front side 11 a of the front panel 11 is the side 11 a of the front panel 11 facing the hob 20 when the apparatus 10 is disposed adjacent to the hob 20. The front side 11a of the front panel 11 closes the housing 14 in the area adjacent to the suction opening 12 to the outside. The back 11 b of the front panel 11, however, facing the interior of the housing 14, that faces away from the hob 20.

The insulating layer 13, which may be formed as an insulating mat, prevents the cooling of the front panel 11 and thus reduces condensation on the front of the front panel 11. In addition, with a corresponding selection of the material of the insulating layer 13, a noise reduction can be achieved. In this case, on the one hand, the noise component is damped, which is caused by the motor provided in the fan box 18, and which propagates through the piping system between the exhaust opening 12 and the fan box 18 of the device 10. On the other hand, the noise component is damped, which arises due to the resulting when flowing through the filter elements 15, 16 air noise. The air noise is insulated in the immediate vicinity of its place of origin.

In the FIG. 4 and the FIG. 5 a device 60 according to a second embodiment is shown. The device 60 is installed in a table 70, in the table top 71, a hob 20 is installed. The table 70 is designed as a kitchen cabinet. The device 60 may also be referred to as a "downdraft" device, which may also be configured as a table ventilation device. In the FIG. 4 and the FIG. 5 Downdraft device shown has a recirculation module.

The device 60 has a front plate 61, a suction opening 62, an insulating layer 63 (FIG. FIG. 5 ), a housing 64, a grease filter 65 and a fan box 68 at the foot of the housing 64. In the fan box 68 is an unspecified fan for sucking cooking vapor to below the level of the hob 20 and the table - or worktop 71st Die Device 60 protrudes in its upper part partially from the table top 71 and thus the table 70 upwards. Here, the front plate 61 and the suction opening 62 are arranged above the work surface 71 and above the hob 20. The suction opening 62 has a predetermined distance from the hob plate 20 from the front panel 61.

From the engine provided in the fan box 68 also a noise propagates upwards in FIG. 4 from what's in FIG. 4 is shown with the block arrows.

FIG. 5 shows the upper portion of the device 60 in more detail. The front plate 61 is in this embodiment, a beveled plate in the edge region, on which the insulating layer 63 is arranged. The beveled edge region of the front plate 61 faces the suction opening 62. The front plate 61 is arranged substantially perpendicular to the work surface 71 and thus also to the hob 20. The front panel 61 is thus arranged between the suction opening 62 and the table top 71, preferably between the suction opening 62 and the hob 20. With the exception of the suction opening 62, the front plate 61 closes the device 60 on the side directed toward the hob 20. The front plate 61 thus contributes, as in the first embodiment, also in this embodiment to the fact that the sucked into the suction port 62 air is deflected in the housing 64 in a different flow direction, as the air was sucked into the suction opening 62. In addition, the front panel 61 directs the air 40 on the hob 20 to the suction opening 62. Thus, the front panel 61 is also used for directing the air extracted with the device 60.

Behind the front panel 61, the grease filter 65 is disposed in the housing 64. The grease filter 65 is thus provided in the device 60 in the upper area, which above the work surface 71 and thus also above the hob 20 (FIG. FIG. 4 ) when the device 60 is placed in the table 70 (FIG. FIG. 4 ) is installed.

In FIG. 5 the insulating layer 63 is arranged on the side of the front plate 61, which of the work surface 71 and thus also the hob 20 (FIG. FIG. 4 ) facing away when the device 60 is disposed adjacent to the hob 20. In other words, the front panel 61 has a front 61a facing the hob 20 when the device 60 is disposed adjacent to the hob 20 and a back 61b facing away from the hob 20 in such a case. The front 61 a of the front panel 61 closes the housing 64 in the area adjacent to the suction opening 12 to the outside. The front side 61 a of the front panel 11 is substantially perpendicular to the hob 20, more precisely, the plane formed by it or the cooking plane 21. The back 61 b of the front panel 61, however, is directed toward the interior of the housing 64.

The front plate 61 is fixed to the housing 64, preferably easily removable, for example by means of releasable snap closure. The insulating layer 13 is arranged on the front panel 11, in particular partially embedded in it. The insulating layer 63 is a flat plate. The insulating layer 63 is arranged on the side of the front plate 61, which is directed into the housing 64 of the device 10.

The insulating layer 63 has the same properties as mentioned in the first embodiment. In particular, with a suitable choice of material, the air noise of the grease filter caused by the device 60 can be damped, which in FIG. 5 is shown as a small block arrow. The noise caused by the fan motor 18 present in the fan box is in FIG. 5 shown as a large block arrow.

All embodiments described above can be used individually or in all possible combinations. In particular, the following modifications are conceivable.

The devices 10, 60 of the first and second embodiments are not limited to a table ventilation system. The devices 10, 60 of the first and second embodiments are also not limited to a ventilation system in which the extracted air is sucked from top to bottom through the device 10, 60. The devices 10, 60 of the first and second embodiments, however, all devices that have a front panel 11, 61 in the front area due to the design.

There are other than the illustrated and described geometries and dimensions for the devices 10, 60 and in particular the front panel 11, 61 and arranged thereon insulating layer 13, 63 selected, as far as the circumstances are to be considered at the installation and a detachable installation of the respective front panel eleventh , 61 is possible as previously described.

The front panel 11, 61 of the first and / or second embodiment may be formed with two shells. In this case, the insulating layer 13, 63 of the first and / or second embodiment may be arranged between the two shells. The second, inner shell can cover the respective insulating layer 13, 63 and protect the insulating layer 13, 63 in its edge region. The front panel 11, 61 of the first and / or second embodiment may in particular be crimped around the respective insulating layer 13, 63.

The front panel 11, 61 of the first and / or second embodiment may be made of sheet metal, in particular aluminum or steel sheet, etc.

The front panel 11, 61 of the first and / or second embodiment, in particular the side facing the hob of the front panel, preferably has a height corresponding to a conventional cooking pot height.

The insulating layer 13, 63 of the first and / or second embodiment may be made of open-cell foam, for example polyurethane (PU). The insulating layer 13, 63 of the first and / or second embodiment may also be surface-sealed. Other materials that allow a certain thermal insulation or insulation are conceivable. To keep contamination of the insulating layer low, for example, the surface can be painted or coated differently. In principle, insulating materials comprising mineral wool are also conceivable,

The hob 20 does not have to be a built-in hob, but it may also be a separate hob which can be placed on a worktop.

Claims (11)

Device (10; 60) for extracting air (40) in a hob (20), in which in a side of the device (10; 60) facing the hob (20) there is a suction opening (12; 62) for sucking air ( 40) on the hob (20) and a front plate (11; 61) arranged adjacent to the suction opening (12; 62) for closing the device (10; 60) in the area adjacent to the suction opening (12; 62) and for directing the extracted air (40) is present, wherein the front plate (11; 61) at its from the hob (20) has an insulating layer (13; 63). Device according to claim 1, characterized in that the front plate (11; 61) is double-shelled, wherein the insulating layer (13; 63) is arranged between the two shells of the front plate (11; 61). Apparatus according to claim 2, characterized in that in the device (10; 60) arranged shell of the bivalve front plate (11; 61) for covering and protecting the insulating layer (13; 63) is configured. Device according to one of the preceding claims, characterized in that the front plate (11; 61) has an L-shaped cross-section at least in a partial region, along which L-shaped cross section the likewise L-shaped insulating layer (13; 63) is arranged. Device according to one of the preceding claims, characterized in that the front plate (11; 61) is arranged between the cooking plane (21) formed by the hob (20) and the suction opening (12; 62). Apparatus according to claim 5, characterized in that the front plate (11; 61) directly adjacent to the cooking surface (21) formed by the hob (20). Device according to one of the preceding claims, characterized in that the front plate (11; 61) is removable from the device (10; 60). Device according to one of the preceding claims, characterized in that the insulating layer (13; 63) is suitable for the insulation of airborne sound. Apparatus according to claim 8, characterized in that the insulating layer (13; 63) is made of open-pore PU foam. Apparatus according to claim 8, characterized in that the insulating layer (13; 63) is surface-sealed. Device according to one of the preceding claims, characterized in that the device (10; 60) is a table ventilation device, which is installed next to the hob (20) in a table (70), wherein at least the suction opening (12; 62) and the next arranged front panel (11; 61) of a table top (71) of the table (70) protrudes so that they are arranged adjacent to the hob (70).

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