BE1030806B1 - Extractor hood and hob that can be structurally integrated into a hob - Google Patents

Abstract

The invention relates to an extractor device (4) for a hob (2) for structural integration into the hob (2), comprising an extractor device housing (6) for arranging the extractor device (4) below a hob plate (8) of the hob (2). with a suction opening (10) in the hob plate (8) connected in a flow-conducting manner, a suction shaft (12), a grease filter (14) arranged in the extractor housing (6), an odor filter arranged in the extractor housing (6) and in the flow direction after the grease filter (14). and a fan arranged in the extractor device housing (6) and in the flow direction after the grease filter (14) for extracting vapors rising above the hob (2), characterized in that the extractor device housing (6) at least in the area of the suction shaft (12). a double-walled housing wall (16) with an inner wall (18) facing the grease filter (14) and an outer wall (20) facing away from the grease filter (14), the inner wall (18) and the outer wall (20) having an intermediate space (22) lock in. The invention further relates to a hob (2).

Description

Description

Extractor hood and hob that can be structurally integrated into a hob

The invention relates to an extractor device that can be structurally integrated into a hob according to the preamble of patent claim 1 and to a hob with an extractor device that is structurally integrated into the hob.

Such extractor hoods for structural integration into a hob and hobs with structurally integrated extractor hoods are state of the art in a

Many different embodiments are already known. The known

Extractor hoods comprise an extractor hood housing for arranging 100 the extractor hood below a hob plate of the hob with a

Intake opening in the hob plate, a suction shaft connected in a flow-conducting manner, a grease filter arranged in the extractor housing, a

Extractor housing and odor filter arranged in the flow direction after the grease filter and an in the extractor housing and in

Fan arranged after the grease filter for suction of above the

Cooktop rising fumes. Extractor hoods of this type are also known as

Also known as a table fan or downdraft fan.

The invention therefore addresses the problem of providing an extractor device for structural

Integration into a hob and a hob with a structurally integrated

To improve the extractor hood.

According to the invention, this problem is solved by an extractor device with the

Features of claim 1, which is characterized in that the

Extractor housing has at least one double-walled housing wall with an inner wall facing the grease filter and an outer wall facing away from the grease filter, at least in the area of the suction shaft, wherein the inner wall and the outer wall enclose a gap. Furthermore, this

Problem solved by a hob with the features of patent claim 10. Advantageous

Further developments and refinements of the invention will become apparent from the following

subclaims.

The advantage achievable with the invention is in particular that a

Extractor hood for structural integration into a hob and a hob with a structurally integrated extractor hood are improved. Due to the inventive design of the extractor hood and the hob, the

Noise emissions from the extractor hood integrated into the hob can be significantly reduced. Accordingly, the invention enables

Technology provides lower noise emissions at the same volume flow through the

Extractor hood or a constant noise emission with an increased volume flow compared to the state of the art, i.e. with stronger extraction and thus a higher extraction performance of vapours rising above the hob.

Basically, the extractor device according to the invention is in terms of type, mode of operation,

Material and dimensions can be freely selected within wide suitable limits. For example, the extractor hood according to the invention can be used advantageously for both household hobs and commercial hobs, i.e. hobs for professional use.

An advantageous development of the extractor device according to the invention for a

Hob for structural integration into the hob provides that the grease filter is arranged in such a way that the grease filter extends at least partially into the area of the

Intake shaft extends, preferably that the grease filter extends, starting from the ı5 intake opening, into an interior of the extractor housing, particularly preferably that the grease filter is designed as a V-shaped grease filter. In this way it is ensured that the vapour rising above the hob is reliably filtered through the

This applies in particular to the preferred embodiment of this

Further development. The particularly preferred embodiment of this further development has the additional advantage that by means of this special form of the grease filter the

The flow cross-section of the grease filter for the vapor can be doubled in a very simple way in terms of design and production technology. Furthermore, by means of the last-mentioned embodiment of this development, it is possible to

Volume flow, before flowing through the odor filter, to be divided in the desired manner without additional components being required. Overall, the present development of the extractor device according to the invention enables a very compact design, particularly with regard to the height of the extractor device.

A further advantageous development of the extractor device according to the invention for a hob for structural integration into the hob provides that the

Extractor housing has at least one double-walled housing wall only in the area of the suction shaft, preferably that the

Extractor housing has only one double-walled housing wall in the area of the suction shaft. As a result, the total volume of the extractor according to the invention and thus the

The installation space required for the extractor hood in the hob can be reduced to a minimum, despite significantly improved noise reduction. This applies in particular to the preferred embodiment of this development, since here the formation of

Housing walls as a double-walled housing wall to only one such

Housing wall is reduced. This is because a positioning of at least one double-walled housing wall in the area of the intake shaft, in particular a

Positioning of the only double-walled housing wall in this area results in a very high level of effectiveness, namely a very high level of noise reduction.

Another advantageous development of the extractor device according to the invention for a hob for structural integration into the hob provides that one of the at least one double-walled housing wall or the one double-walled housing wall is arranged directly adjacent to the grease filter, preferably on the side of the grease filter facing away from the odor filter and the fan. In this way, the

Positioning of this double-walled housing wall has been further optimized in terms of its noise dampening. This applies particularly to the preferred embodiment of this ı5 development.

A further advantageous development of the extractor device according to the invention for a hob for structural integration into the hob provides that the space between at least one of the at least one double-walled housing wall is only filled with a

Gas is filled or evacuated. This means that at least one double-walled

Housing wall can be realized in a particularly simple way in terms of construction and production technology. Air or similar can be used as a gas.

Another advantageous development of the extractor device according to the invention for a hob for structural integration into the hob provides that in the space between at least one of the at least one double-walled housing wall, an inner wall

And the outer wall is arranged with a force-transmitting stiffening structure, preferably the stiffening structure is designed as a plurality of ribs, particularly preferably the stiffening structure has a zigzag shape in cross section. In this way, it is possible, for example, to adjust the respective wall thickness of the

inner wall and/or the outer wall of the double-walled housing wall. Material and weight can be saved accordingly. With the preferred

The embodiment of this further development also provides a structurally and technically simple and very effective stiffening structure. Furthermore, the particularly preferred embodiment of this further development enables the same

Stability, additional material and weight savings.

A particularly advantageous development of the extractor device according to the invention for a hob for structural integration into the hob provides that in the

A noise damping filling made of a different material to the double-walled housing wall is arranged in the intermediate space of at least one of the at least one double-walled housing wall, preferably that the intermediate space with the noise damping filling in the

Essentially completely filled. As a result, the noise emission can be significantly reduced by means of this double-walled housing wall. This applies in particular to the preferred embodiment of this development, since there is essentially no

There are no longer any cavities in the space between the two, i.e. spaces that are not filled with the sound-absorbing filling.

A further particularly advantageous development of the extractor device according to the invention for a hob for structural integration into the hob provides that the inner wall and/or the outer wall of at least one of the at least one double-walled housing wall is/are designed as a perforated wall.

In this way, the weight of this double-walled housing and thus the total weight of the extractor device according to the invention can be reduced significantly. This applies

Especially when using the latter training at the same time, i.e. when

Use of a sound-damping filling so that it can be achieved through this single or double

Perforation does not lead to any functional disadvantages in the use of the extractor device according to the invention. In other embodiments of the extractor device according to the invention, i.e. when no noise-damping filling is used, it is more sensible to refrain from perforating the inner wall and the

Perforation is defined here as any suitable and reasonable type of

Perforation of the respective wall, whereby the number, arrangement, size and

The shape of the holes in the wall can be determined depending on the requirements of the individual case.

Furthermore, another advantageous development of the inventive

Extractor hood for a hob for structural integration into the hob, that the extractor hood housing is provided with at least one double-walled

Housing wall is designed in such a way and the grease filter and/or the odor filter are arranged detachably on the extractor housing in such a way that the respective filter

can be cleaned and/or replaced on site. This means that cleaning and/or

Replacement of the grease filter and/or the odour filter on site, i.e. at the installation location of the

hob, is basically possible.

Accordingly, an advantageous development of the hob according to the invention provides that the extractor device is arranged in the hob in such a way that the grease filter and/or the odor filter can be cleaned and/or replaced on site.

Five embodiments of the invention are shown purely schematically in the drawings and are described in more detail below. It shows

Figure 1 shows a first embodiment of the cooktop according to the invention with the extractor device according to the invention in a partial, sectioned

side view,

Figure 2a shows a first variant of a second embodiment of the cooktop according to the invention with the

Extractor hood in a partial, cut-away side view,

Figure 2b shows a second variant of the second embodiment of the hob according to the invention with the

Extractor hood in a partial perspective view,

Figure 2c shows a third variant of the second embodiment of the inventive

Cooktop with the extractor device according to the invention in analogue

Illustration for Fig. 2b,

Figure 3 shows a third embodiment of the cooktop according to the invention with the extractor device according to the invention in a partial, sectioned

side view,

Figure 4 shows a fourth embodiment of the cooktop according to the invention with the extractor device according to the invention in a partial, sectioned

Side view and

Figure 5 shows a fifth embodiment of the hob according to the invention with the extractor device according to the invention in a partial, perspective view.

In Fig. 1, a first embodiment of the hob according to the invention with the extractor device according to the invention is shown purely by way of example.

The hob 2 is designed as an induction hob and has an extractor device 4 structurally integrated into the hob 2.

The extractor device 4 comprises an extractor device housing 6 for

Arrangement of the extractor device 4 below a hob plate 8 of the hob 2 with a flow-conductingly connected to an intake opening 10 in the hob plate 8

Intake shaft 12, a grease filter 14 arranged in the extractor housing 6, a filter in the extractor housing 6 and in the flow direction after the

Grease filter 14 arranged, not shown odor filter and a in the

Extractor housing 6 and fan (not shown) arranged in the flow direction after the grease filter 14 for extracting vapours (also not shown) rising above the hob 2. The aforementioned odour filter,

For example, an activated carbon filter can be arranged before or after the fan in the direction of flow.

According to the invention, the extractor housing 6 has at least one double-walled housing wall 16 at least in the area of the suction shaft 12 with an inner wall 18 facing the grease filter 14 and an inner wall 18 facing away from the grease filter 14.

Outer wall 20, wherein the inner wall 18 and the outer wall 20 enclose a gap 22.

The grease filter 14 is arranged in the present embodiment in such a way that the grease filter 14 extends at least partially into the area of the intake shaft 12, namely in such a way that the grease filter 14, starting from the intake opening 10, extends into an interior of the

Extractor housing 6. Furthermore, the grease filter 14 is designed as a V-shaped grease filter. The grease filter 14 is, as can be seen from Fig. 1, provided with a

Base of the grease filter 14 is arranged directly at the intake opening 10 of the hob plate 8, so that the vapors (not shown) extracted above the hob 2 pass from the intake opening 10 through the open base of the grease filter 14 directly into the interior of the grease filter 14. When flowing through the grease filter 14, the vapors, i.e. the volume flow, are essentially divided into two partial flows, with one partial flow of the vapors passing through a side wall of the grease filter 14 shown on the left in the image plane of Fig. 1 and the other partial flow of the vapors passing through a side wall shown on the right in the image plane of Fig. 1.

side wall of the grease filter 14. In this way, the grease filter 14 can be used, for example, to divide the vapor before it flows into the not shown

serve as odor filters.

In the present embodiment, the extractor housing 6 has at least one double-walled

Housing wall, namely only the single double-walled housing wall 16 shown in Fig. 1. This single double-walled housing wall 16 is arranged directly adjacent to the grease filter 14, wherein the housing wall 16 is arranged on the side of the grease filter 14 facing away from the odor filter (not shown) and the fan (also not shown). Accordingly, the

Odor filter and the fan here on the left side of the

Grease filter 14.

Furthermore, the intermediate space 22 delimited by the inner wall 18 and the outer wall 20 is only filled with one gas, namely air. In other embodiments of the extractor device according to the invention, however, it would also be conceivable as an alternative that the at least one intermediate space is either filled with another gas or evacuated.

To increase the user-friendliness of the hob 2, the

Extractor hood 4 is arranged in the hob 2 and is on the other hand the

Grease filter 14 and the odor filter are arranged detachably on the extractor housing 6 in such a way that the grease filter 14 and the odor filter can be removed on site, i.e. at the installation location of the

Hob 2, are cleanable and/or replaceable.

The functioning of the hob according to the invention with the extractor device according to the invention according to the present embodiment is briefly explained below with reference to Fig. 1.

The hob 2 with the extractor device 4 is built into a piece of kitchen furniture (not shown), for example a worktop or the like, and is ready for use.

The hob plate 8 has a total of four cooking zones, not specified in detail, which are distributed as usual on the hob plate 8. Of the four aforementioned

Here, in the image plane of Fig. 1, two of the cooking zones are arranged to the left and right of the suction opening 10. Accordingly, regardless of the temperature during a

Cooking process specifically used cooking area, efficient extraction from above the

Hob 2 allows rising vapors.

The extractor device 4 is, as usual, designed in such a way that the vapor flows through the extractor device 4 in a guided forced flow, whereby the entire

The vapors are first sucked through the grease filter 14 and then through the odor filter (also not shown) by means of the fan (not shown). The vapors cleaned in this way can then either be led back in circulating air into the kitchen area (not shown in detail) in which the hob 2 is installed, or by means of a flow connection (not shown) from the fan into a free

environment should be promoted.

Accordingly, the vapor extracted by the fan above the hob 2 passes through the intake opening 10 into the extractor housing 6 and initially flows through the V-shaped grease filter 14. As can be seen from Fig. 1 and has already been explained above, the vapor stream is not only freed of grease (not shown) by means of the grease filter 14, but is simultaneously also divided into two essentially equal-sized partial streams, with one of the two partial streams passing through the grease filter 14 on the left in the image plane of Fig. 1 and the other of the two partial streams passing through the grease filter 14 on the right in the image plane of Fig. 1.

The vapor stream divided in the above-mentioned manner is passed through the

Odour filter, whereby the vapours are separated due to the previous division of the

vapor flow into the two partial flows essentially over the entire inlet area of the

odor filter evenly distributed.

As already explained, the cleaned vapours can then either be led back into the kitchen area (not shown in detail) in which the hob 2 is installed in a recirculation mode of the extractor device 4 or in an exhaust air mode of the

Extractor device 4 by means of a flow connection (not shown) from the

The extractor device 4 can be used advantageously in both recirculation and exhaust air mode. In order to meet the conditions

In order to be able to meet the requirements of the location, the extractor device 4 is designed in such a way that the

Extractor hood 4 can be used in both recirculation and exhaust air mode.

Accordingly, the implementation of the inventive

Extractor hood in two versions, namely for recirculation mode and for

Extract air operation. The necessary adjustment is made to the extractor device 4 when

Installation of hob 2 carried out directly on site.

The unavoidable effects of the aforementioned operation of the extractor device 4

According to the invention, operating noises can be effectively reduced by means of the housing wall 16 which is designed as a double-wall and arranged in the area of the intake shaft 12, so that the aforementioned operation of the extractor device 4 is at least less disturbing for people staying in the vicinity of the hob 2.

Four further embodiments of the invention are shown in Figs. 2a to 5, whereby the second embodiment according to Figs. 2a to 2c is also designed in three variants. The aforementioned further embodiments are described below only in the scope of the respective distinguishing features from the aforementioned

Examples of embodiments are explained. Otherwise, reference is made to the above explanations for the first

Example of implementation. Identical or equivalent components are marked with the same

Reference numerals as in the first embodiment according to Fig. 1.

The second embodiment in the three variants according to Fig. 2a to 2c differs from the first embodiment in that a stiffening structure 24 connecting the inner wall 18 and the outer wall 20 in a force-transmitting manner is arranged in the intermediate space 22 of the double-walled housing wall 16.

The stiffening structure 24 according to the first variant of the second embodiment shown in Fig. 2a is designed as a plurality of ribs, wherein the individual ribs are arranged relative to one another in such a way that the stiffening structure 24 in the

In the cross section shown in Fig. 2a has a zigzag shape.

In the second variant of the second embodiment shown in Fig. 2b, the

Stiffening structure 24 is also designed as a plurality of ribs. In contrast to the first variant according to Fig. 2a, the individual ribs are spaced apart from one another and arranged parallel in the intermediate space 22. s The third variant of the second embodiment according to Fig. 2c differs from the first and second variants of the second embodiment in that the double-walled housing wall 16 extends only over a section of the

Intake shaft 12 and thus only extends over a partial height of the extractor device 4. Otherwise, i.e. directly adjacent to the double-walled housing wall 16, the extractor device housing 6 is only single-walled.

Fig. 3 shows the third embodiment of the cooktop according to the invention with the extractor device according to the invention. Unlike in the first and second embodiments, a noise-damping filling 26 made of a different material than the double-walled housing wall 16 is arranged in the intermediate space 22 of the double-walled housing wall 16, which is delimited by the inner wall 18 and the outer wall 20, wherein the intermediate space 22 is essentially completely filled with the noise-damping filling 26 in the present third embodiment.

Fig. 4 shows the fourth embodiment of the cooktop according to the invention with the extractor device according to the invention. While in the aforementioned

Embodiments according to Fig. 1 to 3, the gap 22 is filled either with a gas or a stiffening structure 24 or a noise damping filling 26, the

The space 22 of the double-walled housing wall 16 is filled here with a stiffening structure 24 designed analogously to the second embodiment according to Fig. 2a as well as with a noise-damping filling 26 designed analogously to the third embodiment according to Fig. 3. Accordingly, the present fourth embodiment combines the advantages of the second and the third

embodiment.

Furthermore, the fifth embodiment of the cooktop according to the invention with the extractor device according to the invention is shown in Fig. 5. Similar to the aforementioned fourth embodiment, the intermediate space 22 of the double-walled housing wall 16 is here provided with a stiffening structure 24 designed analogously to the second embodiment according to Fig. 2b as well as with a stiffening structure 24 designed analogously to the third

Embodiment according to Fig. 3 formed noise dampening filling 26.

Accordingly, the present fifth embodiment also combines the advantages of the second and third embodiments. In addition, the outer wall 20 of the double-walled housing wall 16 in the present fifth embodiment is designed as a perforated wall in the manner of a perforated plate. See Fig. 5, where, for the sake of visibility, the inner wall 18 is shown partially cut away and the actually existing space in the intermediate space 22 is shown.

Noise dampening filling 26 is not shown in some areas. s Due to the inventive design of the extractor device 4 and the

Hob 2 is the noise emission of the structurally integrated in the hob 2

Extractor hood 4 can be reduced significantly. Accordingly, the invention enables

Compared to the state of the art, lower noise emissions at the same

Volume flow through the extractor device 4 or a constant 10 noise emission with a higher volume flow than the state of the art, i.e. with a stronger extraction and thus a higher extraction power of over

Hob 2 rising vapors.

However, the invention is not limited to the present embodiments. See, for example, the relevant statements in the introduction to the description, according to which the extractor device according to the invention can be used advantageously both for domestic hobs and for commercial hobs, i.e. hobs for professional use. The type and functioning of the hob can also be used in a wide range of suitable

Limits freely selectable and not on induction hobs, as in the present

The same applies to the number and design of the

Cooking zones arranged on the hob plate of the hob. For example, the invention can also be used advantageously with so-called surface hobs.

Claims (11)

Patent claims 1. Extractor device (4) for a hob (2) for structural integration into the hob (2), comprising an extractor device housing (6) for arranging the extractor device (4) beneath a hob plate (8) of the hob (2) with an intake shaft (12) connected in a flow-conducting manner to an intake opening (10) in the hob plate (8), a grease filter (14) arranged in the extractor device housing (6), an odor filter arranged in the extractor device housing (6) and downstream of the grease filter (14) in the flow direction, and a fan arranged in the extractor device housing (6) and downstream of the grease filter (14) in the flow direction for extracting vapors rising above the hob (2), characterized in that the extractor device housing (6) has at least one double-walled housing wall (16) with an inner wall (18) facing the grease filter (14) and an outer wall (20) facing away from the grease filter (14), wherein the inner wall (18) and the outer wall (20) enclose an intermediate space (22). 2. Extractor device (4) according to claim 1, characterized in that the grease filter (14) is arranged such that the grease filter (14) extends at least partially into the region of the intake shaft (12), preferably that the grease filter (14) extends, starting from the intake opening (10), into an interior of the extractor device housing (6), particularly preferably that the grease filter (14) is designed as a V-shaped grease filter. 3. Extractor device (4) according to claim 1 or 2, characterized in that the extractor device housing (6) has at least one double-walled housing wall (16) only in the region of the intake shaft (12), preferably that the extractor device housing (6) has only a single double-walled housing wall (16) in the region of the intake shaft (12). 4. Extractor hood device (4) according to one of claims 1 to 3, characterized in that one of the at least one double-walled housing wall or the one double-walled housing wall (16) is arranged directly adjacent to the grease filter (14), preferably on the side of the grease filter (14) facing away from the odor filter and the fan. 5. Extractor device (4) according to one of claims 1 to 4, characterized in that the intermediate space (22) of at least one of the at least one double-walled housing wall (16) is only filled with a gas or evacuated. 6. Extractor hood device (4) according to one of claims 1 to 5, characterized in that a stiffening structure (24) connecting the inner wall (18) and the outer wall (20) in a force-transmitting manner is arranged in the intermediate space (22) of at least one of the at least one double-walled housing wall (16), preferably that the stiffening structure (24) is designed as a plurality of ribs, particularly preferably that the stiffening structure (24) has a zigzag shape in cross section. 7. Extractor hood device (4) according to one of claims 1 to 6, characterized in that in the intermediate space (22) of at least one of the at least one double-walled housing wall (16) a noise-damping filling (26) made of a different material to the double-walled housing wall (16) is arranged, preferably that the intermediate space (22) is substantially completely filled with the noise-damping filling (26). 8. Extractor device (4) according to one of claims 1 to 7, characterized in that the inner wall and/or the outer wall (20) of at least one of the at least one double-walled housing wall (16) is/are designed as a perforated wall. 9. Extractor device (4) according to one of claims 1 to 8, characterized in that the extractor device housing (6) with the at least one double-walled housing wall (16) is designed in such a way and the grease filter (14) and/or the odor filter are/is detachably arranged on the extractor device housing (6) in such a way that the respective filter can be cleaned and/or replaced on site. 10. Hob (2) with an extractor device (4) structurally integrated in the hob (2), characterized in that the extractor device (4) is designed according to one of claims 1 to 9. 11. Hob (2) according to claim 10, characterized in that the extractor device (4) is arranged in the hob (2) in such a way that the grease filter (14) and/or the odor filter can be cleaned and/or replaced on site.