Extractor hood for a hob and kitchen furniture with extractor hood

Description

[0001] The invention relates to an extractor device for a hob and a kitchen unit with an extractor device.

[0002] It is common practice to provide an extractor hood for cooktops. This extractor hood extracts the fumes and vapors that arise during cooking. In addition to extractor hoods designed as extractor hoods located above the cooktop, extractor hoods are also known that draw the fumes and vapors into the piece of furniture on or in which the cooktop is located.

[0003] Such a fume extraction device is described, for example, in DE 20 2016 104 769 U1. An extraction opening is provided near the cooktop, which is connected via a duct to an extraction unit for extracting the fumes into the duct and discharging them outside the piece of furniture through an outlet opening. The extraction unit has a box-shaped body in which a centrifugal fan is housed. The rotational axis of the centrifugal fan is parallel to the vertical axis of the piece of furniture. The fumes are extracted vertically from the duct and directed radially to an opening through which the fumes are expelled.

[0004] A disadvantage of this extractor hood is that the noise from the centrifugal fan can escape through the exhaust opening when the hood is in operation. Furthermore, the space required for the extractor hood within the furniture is considerable.

[0005] Furthermore, DE 10 2008 033 792 A1 describes a recirculation module for use with such an extractor device. The recirculation module has a housing with an air inlet and at least one air outlet opening. Another extractor device is described in DE7203902U. In particular, a cooker unit with cooking zones and an extraction device is described therein. In these extractor devices, the extraction opening is located in the front of a part of the extractor device placed behind the cooking surface and thus at a distance from the cooking surface. Finally, EP 2 267 373 A1 describes an external blower for an extractor device, which has a blower housing and a fan housing accommodated in the blower housing. In the external blower, at least one sound-damping element is provided opposite the air outlet of the fan housing. The air inlet opening is provided on the rear of the blower housing.The external housing is located on the outer wall of a building or on the roof of a building.

[0006] Further prior art is disclosed in German utility model G7203902.

[0007] The object of the present invention is therefore to create a solution by means of which fumes and vapors can be reliably extracted from a cooktop, while at the same time producing a low noise level from the extractor. The invention is based on the finding that this object can be achieved by arranging the fan at a distance from the air outlet of the extractor and by installing a sound-damping material downstream of the fan of the extractor.

[0008] According to a first aspect, the object is achieved by an extractor device for a hob, which has at least one extraction opening in the top side, a fan arranged offset downwards relative to the extraction opening, and a connecting duct between the extraction opening and the fan. The extractor device is characterized in that a distribution chamber is provided downstream of the fan in the flow direction, which has at least one air outlet opening and is at least partially delimited by sound-damping material.

[0009] An extractor hood for a hob is a device by means of which fumes and vapors can be extracted from a hob. The extractor hood has an extraction opening, which is preferably located in or near the hob. The extraction opening is provided in the top of the extractor hood. This means that air enters the extractor hood from above via the extractor hood and in particular the extraction opening. A fan is arranged on the extractor hood, offset downwards from the extraction opening. The fan is preferably offset horizontally from the extraction opening, i.e. the fan is not in the area of ​​the extraction opening when projected vertically onto the extraction opening. The fan is preferably a radial fan. In particular, the fan comprises a fan accommodated in a fan housing.The fan housing has at least one air inlet, also referred to as the blower's air inlet. The fan housing is preferably a helical or spiral housing. The fan's rotational axis is perpendicular to the fan housing's air inlet. The fan housing also features an air outlet through which air can exit the fan housing in a radial direction. The fan housing's air outlet is also referred to as the blower's air outlet.

[0010] A connecting duct of the extractor hood runs between the fan and the extraction opening. The connecting duct can be located directly next to the extraction opening. However, it is also within the scope of the invention for a grease filter unit to be provided at the extraction opening, which extends downwards and the connecting duct is connected to the extraction opening via the grease filter unit. Air is guided from the extraction opening to the fan via the connecting duct. The connecting duct can be a one-piece duct, which can be made of plastic, for example. Alternatively, the connecting duct can consist of duct or pipe sections that are connected to one another. These duct or pipe sections can also be made of plastic. Additionally or alternatively, the connecting duct can have hose elements or consist of a hose.

[0011] The extractor hood is preferably installed in a piece of furniture, also known as kitchen furniture. The extractor hood's exhaust opening is located on the top of the piece, where the hob is usually installed.

[0012] Unless otherwise stated, directional references such as top, bottom, front and rear refer to the extractor hood and its components when assembled, i.e. built into a piece of furniture, also known as kitchen furniture. When assembled, the extraction opening of the extractor hood is preferably horizontal. The front of the piece of furniture and the extractor hood and its components is the side facing the user. The rear is the side opposite the front and is usually facing a wall of the room or adjacent to it. The dimension in the direction between the front and rear is called the depth and the horizontal dimension perpendicular to this is called the width. The vertical dimension is called the height.

[0013] The extractor device is characterized in that a distribution chamber is provided downstream of the fan in the flow direction, which has at least one air outlet opening and which is at least partially delimited by sound-damping material.

[0014] In the distribution space, the air from the fan is directed to at least one air outlet opening of the extractor extraction device. The air outlet opening of the extractor extraction device is an opening through which the air is discharged from the extractor extraction device. In order to direct the air from the fan in the distribution space to the air outlet opening of the extractor extraction device, the air outlet opening of the fan is arranged on or in the distribution space. Preferably, the at least one air outlet opening of the extractor extraction device is arranged perpendicular to the air outlet opening of the fan on the distribution space. The distribution space can also be referred to as an air outlet duct. In the distribution space, the air exiting the air outlet opening of the fan is preferably redirected in order to reach the air outlet opening.

[0015] According to the invention, the distribution chamber is at least partially delimited by sound-damping material. In particular, sound-damping material is arranged on at least part of at least one of the walls of the distribution chamber. The sound-damping material can also be referred to as sound-insulating material. The sound-damping material can be designed as a plate or mat, or as a molded body. The sound-damping material is preferably made of foam.

[0016] According to the invention, a number of advantages can be achieved by locating the distribution chamber downstream of the fan in the direction of flow, having at least one air outlet opening of the extractor device, and being at least partially delimited by sound-damping material. In particular, the fan is located at a distance from the air outlet opening of the extractor device, preventing noise generated by the fan from escaping directly through the air outlet opening. Furthermore, the sound-damping material can absorb at least some of the noise generated by the fan. Finally, the sound-damping material can also absorb noise that occurs due to a redirection of the air flow downstream of the fan.

[0017] According to a preferred embodiment, the distribution chamber has a floor opposite the air outlet opening of the fan. In this embodiment, the sound-damping material is preferably arranged on the floor. The lower surface of the distribution chamber is referred to as the floor of the distribution chamber. The floor of the distribution chamber simultaneously forms the lower surface of the extractor extraction device, which preferably rests on a room floor, in particular a kitchen floor. The floor of the distribution chamber therefore preferably represents a flat surface. The air outlet opening of the fan of the extractor extraction device is opposite the floor. The fan is therefore arranged such that the air outlet opening of the fan points downwards. The air exiting through the air outlet opening of the fan is thus directed towards the floor. According to a preferred embodiment, the sound-damping material is arranged on the floor of the distribution chamber.The sound-damping material is preferably provided on the floor in the area opposite the fan's air outlet. Thus, the sound-damping material covers at least the area on the floor corresponding to the vertical projection of the fan's air outlet onto the floor. However, the area of ​​the floor covered by the sound-damping material can also be larger than the projection area of ​​the fan's air outlet.

[0018] The air exiting the fan's air outlet is directed toward the floor of the distribution room and is deflected by impact with the floor. This deflection can generate noise. By providing sound-damping material, at least in the area where the air outlet projects onto the floor, the preferred embodiment can prevent or at least dampen this noise.

[0019] According to a preferred embodiment, the floor of the distribution compartment is completely covered by the sound-damping material. The at least one air outlet opening of the extractor device is preferably located at the outer edge of the floor of the distribution compartment. By completely covering the floor of the distribution compartment with sound-damping material, noise generated by the air flow between the air outlet opening of the fan and the air outlet opening of the extractor device can also be dampened.

[0020] According to a further embodiment, the distribution chamber has a cover plate which lies opposite the floor and in which the air outlet opening of the fan is located. The cover plate can be aligned parallel to the floor. The air outlet opening of the fan can lie in the surface of the cover plate. However, it is also possible according to the invention for the air outlet opening to be offset from the surface of the cover plate into the interior of the distribution chamber. In this case, the air outlet opening of the fan can, for example, represent the end of an outlet nozzle which extends through the cover plate of the distribution chamber. According to one embodiment, sound-damping material is arranged on the cover plate in the interior of the distribution chamber. The term "arranged in the interior of the distribution chamber" refers to sound-damping material which is arranged on the side of the cover plate which faces the interior of the distribution chamber.By providing sound-damping material on the cover plate, noise in the distribution compartment can be absorbed even more effectively. The sound-damping material can be arranged around the fan's air outlet, for example. For example, a ring of foam material can be placed around the air outlet.

[0021] However, it is also possible for the sound-damping material to completely cover the cover plate around the fan's air outlet opening. In this case, the sound-damping material extends from the air outlet opening to the outer edges of the cover plate. The air outlet opening of the extractor device is preferably located on at least one side of the distribution space. Thus, sound-damping material present from the air outlet opening to the outer edge of the cover plate can dampen noise along the entire airflow path to the air outlet opening.

[0022] The distribution chamber can have a box shape. The base area of ​​the box shape, which is preferably formed by the floor of the distribution chamber, can be rectangular. The air outlet opening of the fan is preferably located centrally in the top side of the box shape in the box-shaped distribution chamber. If the top side is formed by a cover plate, the air outlet opening is located centrally in the cover plate. According to one embodiment, the distribution chamber extends from the air outlet opening of the fan in at least two horizontal directions. This allows the air that exits vertically from the air outlet opening of the fan to be deflected in two horizontal directions. The horizontal directions are preferably opposite one another. In this embodiment, the distribution chamber can be formed, for example, by a duct with a rectangular cross-section.The air outlet openings in the extractor unit are located at the open ends of the duct. The underside of the rectangular cross-section of the duct forms the floor, and the top of the rectangular cross-section forms the cover plate of the distribution compartment. If this duct with a rectangular cross-section is arranged so that its length is parallel to the back wall of the kitchen unit in which the extractor unit is installed, the air outlet openings are located in the sides of the extractor unit.

[0023] According to the invention, however, it is also possible for the distribution space to extend from the air outlet opening of the fan in three or four horizontal directions that are perpendicular to one another. In this embodiment, the distribution space can be formed, for example, by the floor and the cover plate, which are connected to one another at three or four edges via struts or grilles. In this embodiment, the air outlet openings of the extractor device are formed by the distance between the struts or between grille elements. If the struts or grille are only provided on three of the four edges of the floor and the cover plate, a side wall can be provided on the fourth edge. This side wall is preferably located on the rear edge of the floor of the distribution space. With such a configuration, the air exiting the air outlet opening of the fan can be discharged to the front and to the sides.In this embodiment, the air outlet opening of the fan can be located centrally in the cover plate in the width direction.

[0024] The distribution chamber can either form part of a blower housing and be designed as a single piece with it, or it can be connected to the blower housing as a separate component at the bottom, in which the blower and at least one odor filter are provided.

[0025] According to one embodiment, the extractor hood has a fan housing, and the distribution chamber is formed in the lower region of the fan housing. At least the fan of the extractor hood is accommodated in the fan housing. The fan housing has an air inlet opening that is connected to the connecting duct, so that air that has been sucked in from the cooktop via the extraction opening of the extractor hood can enter the fan housing via the air inlet opening. The fan housing can have a box shape. The air inlet opening is preferably provided in the top side of the fan housing. According to one embodiment, the distribution chamber is formed in the lower region of the fan housing. The air outlet openings of the extractor hood can be incorporated in the outer wall of the fan housing. In this embodiment, the bottom of the fan housing forms the bottom of the distribution chamber.The distribution chamber can be limited at the top by an intermediate floor, which serves as the cover plate of the distribution chamber. The intermediate floor separates the area in the fan housing where the fan is housed from the distribution chamber. An opening is provided in the intermediate floor, which houses the fan's air outlet or through which a fan outlet nozzle protrudes, the lower end of which forms the fan's air outlet.

[0026] By providing a fan housing, a reliable supply of air to the at least one air inlet of the fan housing and thus into the fan can be ensured. The air can be directed in the fan housing to the at least one air inlet of the fan housing. By forming the distribution chamber in the fan housing, the design of the extractor extraction device is simplified. Furthermore, the noise generation that can occur with a separate distribution chamber attached to a fan housing can be prevented.

[0027] Nevertheless, it is also possible with the present invention for the distribution chamber to be a separate component attached to the fan housing of the extractor fan. In this case, the air flow in the distribution chamber also occurs via the air outlet opening of the fan. In this embodiment, the distribution chamber can be formed by a floor with walls, struts, or grilles projecting upwards at the edges. This floor can be connected to the underside or floor of the fan housing. Thus, in this embodiment, the floor of the fan housing forms the cover plate of the distribution chamber. This embodiment further simplifies the structure of the extractor fan.

[0028] According to the invention, at least one odor filter is arranged in the extractor device upstream of the fan in the direction of flow. The direction of flow is the direction from the extraction opening to the fan. The at least one odor filter is thus located between the extraction opening and the fan. In particular, the at least one odor filter is arranged upstream of an air inlet opening of the fan. An activated carbon filter, for example, can be used as the odor filter. This can, for example, have the form of a mat or a shaped body. According to one embodiment, the odor filter is a pleated activated carbon filter mat held in a frame. The odor filter can remove odorous substances from the sucked-in vapors and fumes.

[0029] By arranging at least one odor filter upstream of the air inlet opening of the fan in the direction of flow in the extractor extraction device according to the invention, a number of advantages can be achieved. Firstly, the escape of odorous substances from the extractor extraction device can be reliably prevented. Since the odor filter is arranged upstream of the air inlet opening of the fan and preferably close to the fan, it can also be easily accessible to the user. The fan is provided below the extraction opening in the extractor extraction device. The fan is thus located in the area of ​​the piece of furniture in which the hob and thus the extraction opening of the extractor extraction device are located in the top. By opening the piece of furniture, for example by pulling out a drawer, the fan and thus the at least one odor filter can be made accessible to the user.In addition, the odor filter provided in the fan housing can be arranged near the air inlet of the fan, and in particular the fan housing, thereby improving noise attenuation by the odor filter. In particular, the at least one odor filter can dampen noise generated by the fan when air is drawn in by the material of the odor filter. This minimizes the noise level perceived by the user through the exhaust opening of the extractor device.

[0030] The at least one odor filter is preferably arranged in the fan housing of the extractor device. The odor filter can be attached to the fan and / or to a wall of the fan housing. The odor filter is preferably detachably attached. For example, the odor filter can be inserted into a holder in the fan housing. The odor filter preferably completely covers the air inlet opening of the fan in the direction of flow. In particular, the odor filter has a size that is equal to or larger than the area of ​​the air inlet opening of the fan. The odor filter completely covers the air inlet opening in a perpendicular projection onto the air inlet opening. For this purpose, the odor filter is preferably provided in the immediate vicinity of the air inlet opening. The at least one odor filter can be arranged at an angle to the surface of the air inlet opening of the fan.An inclined arrangement of the odor filter refers to an orientation in which the angle between the fan axis and the surface of the odor filter is not equal to 90°. By arranging the odor filter at an angle, the surface area of ​​the odor filter can be increased. This improves the filtering of odorous substances and also optimizes sound insulation.

[0031] According to a preferred embodiment, the fan is a radial fan, and the fan axis of the fan, i.e., the fan of the fan, is horizontal. In this embodiment, the diameter of the fan is vertical and thus perpendicular to a hob that is incorporated into the top of a piece of furniture in which the extractor hood is integrated. The fan axis can be horizontal, parallel or perpendicular to a wall of the piece of furniture, in particular to the rear wall of the piece of furniture in which the extractor hood is integrated.

[0032] The dimension of the fan in the direction of the fan axis can be smaller than the dimension of the fan in the radial direction or in the direction of the diameter. In this embodiment, the fan can be arranged in the extractor extraction device such that the fan axis lies horizontally, perpendicular to the rear wall of the piece of furniture. The air inlet opening of the fan in this embodiment lies parallel to the rear wall of the piece of furniture. In this embodiment, an odor filter is preferably provided in front of the fan, i.e. on the side of the fan facing away from the rear wall. This allows the odor filter to be reached by the user of the extractor extraction device from the front.

[0033] Preferably, however, the fan axis of the blower is parallel to the rear wall of the piece of furniture. The at least one air inlet opening of the blower is perpendicular to the rear wall of the piece of furniture. The at least one odor filter is thus located next to the blower and is also accessible to the user of the extractor hood from the front. With this embodiment, too, the installation space required in the depth direction of the piece of furniture is small, since, if an odor filter is provided upstream of the blower in the direction of flow, this odor filter is located next to the blower and thus does not increase the dimensions of the extractor hood in the depth direction in the area of ​​the blower.

[0034] The storage space in the piece of furniture that is available after the extractor hood is installed is therefore maximized.

[0035] According to a preferred embodiment, the fan is a double-flow fan. A fan is referred to as a double-flow fan if it has two air inlets. These air inlets are perpendicular to the fan axis and are provided on opposite sides of the fan housing. The double-flow fan preferably has only one fan. The double-flow fan is preferably arranged so that the fan axis is horizontal and parallel to the rear wall of the piece of furniture. Thus, the air inlets of the fan are perpendicular to the rear wall of the piece of furniture. The odor filter(s), which are arranged in front of the respective air inlets in the direction of flow, are thus located to the side of the fan and are accessible to the user of the extractor hood from the front.

[0036] By using a dual-flow fan, a smaller diameter fan can be used while maintaining the same performance. This further maximizes the storage space in the furniture in which the extractor is integrated.

[0037] In addition, a dual-flow fan allows for reliable extraction of fumes and vapors even at lower fan power. This further reduces the noise generated when air is drawn into the fan.

[0038] According to one embodiment, at least one wall of the fan housing is detachably attached. In particular, the front wall of the fan housing is detachably connected to the other side walls of the fan housing. The front wall is the wall that is closest to the user of the extractor hood when installed. In an extractor hood integrated into a piece of furniture, the front wall of the fan housing thus faces away from the rear wall of the piece of furniture. By detachably connecting at least one wall, in particular the front wall of the fan housing, to the other fan housing, the user can remove it. This allows access to the components housed in the fan housing. In particular, the user can access the fan and any odor filters provided, which are preferably housed in the fan housing, and remove or replace the odor filters.

[0039] According to a further aspect, the present invention relates to a piece of kitchen furniture with at least one cooking hob. The kitchen furniture is characterized in that at least one extractor device according to the invention is integrated into the kitchen furniture.

[0040] Advantages and features described with regard to the extractor hood also apply - where applicable - to the kitchen furniture according to the invention and vice versa and are therefore only described once if necessary.

[0041] According to the invention, kitchen furniture refers to a kitchen cabinet, specifically a kitchen base unit. The kitchen cabinet can be integrated into a kitchen unit or represent a cooking block. The kitchen furniture is also referred to below as a piece of furniture. According to the invention, a hob is provided in the kitchen furniture. The hob is preferably inserted into a worktop of the kitchen unit or placed on top of it. The hob can, for example, be an induction hob.

[0042] According to the invention, at least one extractor hood configured according to the present invention is integrated into the kitchen unit. "Integration" refers to the installation of the extractor hood into the kitchen unit. In this case, the extractor hood can extend beyond the boundary walls of the kitchen unit, in particular the floor, at least in some areas.

[0043] According to the invention, the extractor device has an extraction opening. The extraction opening can be located within the hob, for example, centrally located within the hob. The extraction opening can extend across the depth of the hob. The extraction opening can be rectangular or round. However, according to the present invention, it is also possible for the extraction opening to be arranged adjacent to the hob. For example, an extraction opening of the extractor device can be provided on each side edge of the hob. It is also possible to provide an extraction opening at the front or rear edge of the hob.

[0044] According to a preferred embodiment, the hob is arranged in the top of the kitchen unit and the extraction opening of the extractor device is located in the area of ​​the hob.

[0045] According to a preferred embodiment, the fan is located in the rear area of ​​the kitchen unit. The fan is therefore preferably offset to the rear relative to the extraction opening of the extractor hood. The fan is particularly preferably located near the rear wall of the kitchen unit. According to the invention, a connecting duct is provided between the extraction opening and the fan. With a fan offset to the rear relative to the extraction opening, the connecting duct therefore has a course in which deflections are present. In particular, the connecting duct preferably extends downwards from the extraction opening and then merges into a region running parallel to the extraction opening to the rear. Adjacent to the parallel region is a further deflection, via which the connecting duct merges into a region running vertically downwards.The vertically downward section is parallel to the back wall of the kitchen unit. The lower end of the vertical section of the connecting duct is preferably connected to a fan housing.

[0046] According to a preferred embodiment, at least the distribution chamber of the extractor extraction device projects downwards above the floor of the kitchen furniture. The side walls of this distribution chamber have openings that serve as air outlet openings on the extractor extraction device. The air outlet openings can be located in the side walls of the distribution chamber and / or in the front of the distribution chamber. If the piece of furniture is not arranged on a mounting wall, the air outlet openings can also be provided in the rear of the distribution chamber. The floor of the distribution chamber can stand on the room floor, i.e. the kitchen floor. Because the distribution chamber of the extractor extraction device projects downwards above the floor of the kitchen furniture, the air that is emitted from the extractor extraction device via the air outlet openings can exit below the kitchen furniture.Kitchen units typically have feet that raise the base of the unit to a certain distance from the floor of the room in which the unit is located, i.e., a kitchen floor. The distribution compartment is preferably located at this distance.

[0047] If the distribution compartment represents the lower section of a fan housing, the fan housing preferably extends through the floor of the kitchen unit, so that the distribution compartment is located below the floor of the kitchen unit. If the distribution compartment is a separate component connected to a fan housing, the fan housing can be completely incorporated into the kitchen unit.

[0048] Even in the embodiment in which the fan housing extends downwards over the floor of the kitchen furniture, the fan is preferably arranged according to the invention inside the kitchen furniture, i.e. above the floor of the kitchen furniture. By arranging the fan inside the kitchen furniture, the noise generated by the fan is dampened by the walls of the kitchen furniture. This reduces the overall noise level generated by the fan and perceptible to the user. In particular, the odor filter or odor filters prevent noise from escaping via the extraction opening of the extractor hood, and other noises from the fan, such as vibration noise, are dampened by the walls of the kitchen furniture. Furthermore, when the fan is arranged inside the kitchen furniture, the air outlet opening of the extractor hood is at a distance from the air outlet opening of the fan.This prevents fan noise from escaping directly through the air outlet. Since, according to the invention, sound-damping material is also provided in the distribution space extending between the fan's air outlet and the extractor's air outlet, the noise generated by the fan can be absorbed.

[0049] The present invention is explained in more detail below with reference to the accompanying figures. They show: Figure 1 : a schematic perspective view of an embodiment of the extractor device according to the invention; Figure 2 : a schematic representation of the fan housing of an embodiment of the extractor device according to the invention; Figure 3 : a schematic sectional view of an embodiment of the kitchen furniture according to the invention with an extractor hood according to the invention; Figure 4: a schematic perspective view of the embodiment of the extractor device according to Figure 1 in the area of ​​the blower housing; and Figure 5 : a schematic, perspective sectional view of the embodiment of the extractor device in the area of ​​the fan housing according to Figure 4 .

[0050] In Figure 1 A schematic perspective view of an embodiment of the extractor device 3 according to the invention is shown. The extractor device 3 has an extraction opening 30, a connecting duct 34, a fan (not visible) accommodated in a fan housing 31, and a distribution chamber 312. In the embodiment of the Figure 1It can be seen that a grease filter unit 35 extends downwards from the extraction opening 30. A connecting duct 34 is connected to the grease filter unit 35. The extractor extraction device 3 can, however, also be formed without a separate grease filter unit; in this case, the grease filter unit can be integrated into the connecting duct 34. In the embodiment shown, the connecting duct 34 initially has a horizontally running region. On the rear side of the horizontally running region there is a deflection through which the connecting duct 34 merges into a vertically downwardly running region. The lower end of the connecting duct 34 rests on the upper side of a fan housing 31. In particular, the air inlet opening 314 of the fan housing 31 is accommodated in the interior of the lower end of the connecting duct 34.

[0051] The blower housing 31 has a box shape in the illustrated embodiment. A shoulder is provided in the front of the blower housing 31. This shoulder increases the depth of the blower housing 31 from the top, where the air inlet opening 314 is provided, downwards. An air guide element 311 is provided at the top in the blower housing 31. The air guide element 311 has a roof shape and is arranged centrally below the air inlet opening 314. The air flow that enters the blower housing 31 via the air inlet opening 314 is thus split via the air guide element 311. In the part of the blower housing 31 that has a greater depth, the blower (in Figure 3 not visible) and two odor filters 33. The front wall 310 of the blower housing 31, which is preferably detachably attached, is in Figure 1shown. Recesses are provided in the front wall 310 through which the odor filters 33 can be inserted into the blower housing 31.

[0052] The distribution chamber 312 is arranged below the fan 33. In the illustrated embodiment, this represents a separate component. In particular, the distribution chamber 312 is formed by a frame having a base 317 and struts projecting upwards at the corners. In the illustrated embodiment, the air outlet opening 313 of the fan housing 31, and thus of the extractor hood 3, extends across the entire depth of the fan housing 31, as well as across the front and rear of the distribution chamber 312. In the illustrated embodiment, a panel 36 is shown in the front central area of ​​the distribution chamber 312, which prevents air from escaping via the central front area of ​​the distribution chamber 312. This protects the user from drafts.

[0053] Upper and lower sound-damping materials 315, 316 are arranged in the distribution chamber 312. The lower sound-damping material 316 covers the floor 317 of the distribution chamber 312, and the upper sound-damping material 315 is arranged at the top of the distribution chamber 312. The top of the distribution chamber is also referred to as the cover plate and, in the illustrated embodiment, is formed by the floor of the blower housing 31. The sound-damping material 315, 316 is formed by mats or plates, which are preferably made of foam material.

[0054] In the Figure 2 is a schematic representation of the fan housing 31 of an embodiment of the extractor device 3 according to the invention. Figure 2only the lower part of the blower housing is shown, and the components in the blower housing 31 are shown in a schematic front view. In particular, a blower 32 is accommodated in the blower housing 31. In the illustrated embodiment, the blower 32 is a double-flow blower. Two air inlet openings 321 are therefore provided in the fan housing 320 of the blower 32. The air inlet openings 321 are perpendicular to the fan axis 322 of the blower 32. The fan axis 322 lies horizontally. Adjacent to the air inlet openings 321, in front of each air inlet opening 321, is an odor filter 33 outside the fan housing 320. In the illustrated embodiment, the odor filters 33 each have a box shape. The odor filters 33 are arranged at an angle to the respective air inlet opening 321. In particular, the upper edge of the odor filter 33 rests above the air inlet opening 321 on the fan housing 320 of the blower 32.

[0055] In the Figure 2 In the illustrated embodiment, the distribution chamber 312 is integrated into the fan housing 31. In this embodiment, an intermediate floor 318 of the fan housing 31, which closes off the area in which the fan 32 is accommodated in the fan housing 31, forms the top or cover plate of the distribution chamber 312. The floor 317 of the fan housing 31 forms the floor of the distribution chamber 312 in this embodiment. The air outlet openings 313 in the distribution chamber 312 are formed by openings in the wall of the fan housing 31.

[0056] The fan housing 320 has an outlet nozzle through which the air outlet opening 323 of the fan housing 320 is formed. In the illustrated embodiment, the outlet nozzle of the fan housing 320 protrudes through the intermediate floor 318 of the blower housing 31. The distribution chamber 312 is located below the intermediate floor 318 of the blower housing 31. The distribution chamber 312 is fluidically connected to the interior of the fan housing 320 via the air outlet opening 323 of the fan housing 320.

[0057] In the illustrated embodiment, the floor 317 of the distribution chamber 312 is covered by sound-damping material 316. Sound-damping material 315 is also provided on the top of the distribution chamber 312. The sound-damping material 315 extends over the entire surface of the top of the distribution chamber 312 inside the distribution chamber 312 and is penetrated by the outlet nozzle of the fan housing 320.

[0058] The arrows S indicate the Figure 2 the air flow that results in the fan housing 31. From an air inlet opening 314 provided above the fan 32 (in Figure 2 not shown), air is sucked in by the fan 32. The air first passes through the two odor filters 33 before entering the air inlet openings 321 of the fan housing 320. The air is conveyed to the outlet nozzle via the fan wheel (not shown) and leaves the fan housing 320 via the air outlet opening 323. The air thus emitted is deflected in the distribution chamber 312 and directed horizontally to the air outlet openings 313 of the fan housing 31 and thus to the air outlet openings 313 of the extractor device 3.

[0059] In the Figure 3 is a schematic sectional view of an embodiment of the kitchen furniture 1 according to the invention with an extractor device 3 according to the invention. As can be seen from Figure 3The vertically running section of the connecting duct 34 lies in the rear area of ​​the kitchen unit 1. The depth of the connecting duct is small. The fan housing 31 is arranged below the connecting duct 34. In the embodiment shown, this extends through the floor 13 of the kitchen unit 1 down to the floor B of the kitchen. In the embodiment shown, the kitchen unit 1 has a worktop 10 in which a hob 20 is accommodated. Drawers are provided in the front of the kitchen unit 1. The drawers comprise compartments 11, 12 which extend into the interior of the kitchen unit 1 and are slidably mounted. In the embodiment shown, the depth of the upper drawer 11 is greater than the depth of the lower drawer 12. The upper drawer 11 is at the height at which the vertical section of the connecting duct 34 runs in the rear area of ​​the kitchen unit 1.The lower drawer 12 is located at the height at which the fan housing 31 of the extractor fan 3 runs inside the kitchen unit 1. The floor 13 of the kitchen unit is offset upwards relative to the floor B of the kitchen and is held in place by a foot 14. In the . Figure 3 only one foot 14 is visible. However, it is also within the scope of the invention and is preferred that at least two feet, preferably four feet 14, are provided on the base 13 of the kitchen furniture 1.

[0060] In the embodiment according to Figure 3The distribution chamber 312 is shown as an integral component of the fan housing 31. However, the distribution chamber 312 can also be provided as a separate component in this embodiment. The distribution chamber 312 is arranged in the area in which the fan housing 31 extends downwards over the floor 13 of the kitchen unit 1. Thus, air can be blown out from below the floor 13 of the kitchen unit 1 through the air outlet openings (not shown).

[0061] In Figure 4 An embodiment of an extractor device 3 is shown in the area of ​​the fan housing 31 as a schematic perspective view. This embodiment shows the fan housing 31 as it is in the embodiment of the extractor device 3 in Figure 1 is shown. In the Figure 4It can also be seen that an inlet nozzle is provided on the top side of the blower housing 31, the upper end of which serves as the air inlet opening 314 of the blower housing 31. In addition, Figure 4 an electronics 324 of the blower 32 is indicated. The electronics 324 is arranged above the blower housing 320. In addition, Figure 4 that the odor filter 33 is a pleated odor filter. For this purpose, the frame of the left odor filter 33, which is visible on the right odor filter 33, is not shown. Furthermore, from the Figure 4 that the walls of the distribution chamber 312 are formed by a grid. The air outlet openings 313 are thus in the embodiment according to Figure 4 formed by the spaces between the bars of the grid.

[0062] In Figure 5is a schematic perspective sectional view of the embodiment of the extractor device 3 in the area of ​​the fan housing 31 according to Figure 4 shown. In this sectional view, it can be seen that the air guide element 311 is arranged centrally below the air inlet opening 314. The roof-shaped air guide element 311 covers the electronics 324 at the top. The fan 32 is arranged below the electronics 324. As can be seen from Figure 5 The air outlet opening 323 of the fan housing 320 is formed by an outlet nozzle. The outlet nozzle projects into the distribution chamber 312. The outlet nozzle projects through the upper sound-damping material 315. The bottom 317 of the distribution chamber 312 is covered by the lower sound-damping material 316. The odor filters 33 are connected to the air inlet openings (in Figure 5 not visible) arranged at an angle.

[0063] The present invention preferably uses a double-flow fan installed in a fan housing. A sound absorption mat is integrated at the fan outlet. This mat is positioned perpendicular to the air flow from the fan. Two odor filters, particularly activated carbon filters, can be installed in front of the fan's air inlet.

[0064] The present invention is not limited to specific dimensions of the extractor hood or the kitchen unit. However, according to one embodiment, the depth of the kitchen unit can be 600 mm, for example. The extraction opening can be located, for example, in a recess in a hob and have a depth of 520 mm. The distance between the rear wall of the kitchen unit and the extraction opening can be 50 mm, for example. The height between the extraction opening and the lower end of a horizontally running section of the connecting duct can be 170 mm, for example. The depth of the vertically running section of the connecting duct can be 100 mm, for example. The depth of the fan housing can be 230 mm, for example. In this embodiment, an upper drawer can have a depth of 450 mm, for example, and a lower drawer can have a depth of 340 mm.If the depth of the kitchen unit, especially the worktop, is 700 mm or more than 900 mm, for example, the upper drawer can be either 550 or 600 mm deep. The lower drawer in this configuration can be 440 or 600 mm deep, for example.

[0065] Such great depths for the lower drawer are not possible with state-of-the-art extractor hoods. Due to the vertical orientation of the fan axis of the blower, which is usually located beneath the kitchen unit, i.e., below the floor of the kitchen unit, a housing containing such a blower is generally 400 mm deep. To ensure an air supply to the blower, a connection between a narrow connecting duct and the large fan housing is required. For this reason, with state-of-the-art extractor hoods, a drawer in the lower area of ​​the kitchen unit can have a maximum depth of 280 mm.

[0066] A number of advantages can be achieved with the present invention. In particular, the present invention offers an integrated solution. A very low noise level can be achieved with the present invention. In particular, this is achieved through sound-damping material provided in the distribution space. The sound-damping material can also be referred to as absorption material and can, for example, be a mat.

[0067] In contrast to the extractor hoods according to the prior art, the extractor hood according to the invention can use a fan which, on the one hand, produces little noise and, on the other hand, can be easily provided with sound insulation. REFERENCE SYMBOL

[0068] 1Kitchen furniture 10Worktop 11Drawer 12Drawer 13Floor 14Foot 2Hob 3Extractor device 30Extraction opening 31Fan housing 310Front wall 311Air guide element 312Distribution chamber 313Air outlet opening 314Air inlet opening 315Soundproofing material 316Soundproofing material 317Floor 318Intermediate floor 32Fan 320Fan housing 321Air inlet opening 322Fan shaft 323Air outlet opening 324Electronics 33Odor filter 34Connecting duct 35Grease filter unit 36Panel SFlow direction BRoor floor

Claims

1. Vapour extraction apparatus for a hob, which has, in the upper side, at least one suction opening (30), a fan (32) that is arranged offset downwards in relation to the suction opening (30) and a connecting channel (34) between the suction opening (30) and the fan (32), wherein a distributor space (312), which has at least one air outlet opening (313), is provided downstream of the fan (32) in the flow direction, characterised in that the distributor space (312) is delimited at least partially by sound attenuation material (315, 316), wherein at least one odour filter (33) is arranged upstream of the fan (32) in the flow direction.

2. Vapour extraction apparatus according to claim 1, characterised in that the distributor space (312) has a floor (317), which lies opposite the air outlet opening (323) of the fan (32), and the sound attenuation material (316) is arranged on the floor (317).

3. Vapour extraction apparatus according to claim 2, characterised in that the sound attenuation material (316) completely covers the floor (317) of the distributor space (312).

4. Vapour extraction apparatus according to one of claims 1 to 3, characterised in that the distributor space (312) has a cover plate, which lies opposite the floor (317) and in which the air outlet opening (323) of the fan (32) lies, and on the cover plate the sound attenuation material (315) is arranged in the inner space of the distributor space (312).

5. Vapour extraction apparatus according to claim 4, characterised in that the sound attenuation material (315) completely covers the cover plate around the air outlet opening (323) of the fan (32).

6. Vapour extraction apparatus according to one of claims 1 to 5, characterised in that the distributor space (312) extends from the air outlet opening (323) of the fan (32) in at least two horizontal directions.

7. Vapour extraction apparatus according to one of claims 1 to 6, characterised in that the sound attenuation material (315, 316) is made of foam.

8. Vapour extraction apparatus according to one of claims 1 to 7, characterised in that the vapour extraction apparatus (3) has a fan housing (31) and the distributor space (312) is formed in the lower region of the fan housing (31).

9. Vapour extraction apparatus according to claim 8, characterised in that an intermediate floor (318) of the fan housing (31) partitions off the distributor space (312) from the upper region of the fan housing (31), in which at least the fan (32) of the vapour extraction apparatus (3) is accommodated and the intermediate floor (318) forms the cover plate of the distributor space (312).

10. Vapour extraction apparatus according to one of claims 1 to 9, characterised in that the vapour extraction apparatus (3) has a fan housing (31), the distributor space (312) represents a separate component that is fastened to the fan housing (31) of the vapour extraction apparatus (3) and the air flow into the distributor space (312) takes place via the air outlet opening (323) of the fan.

11. Vapour extraction apparatus according to one of claims 1 to 10, characterised in that the at least one odour filter (33) completely covers the air inlet opening (321) of the fan (32) in the flow direction.

12. Vapour extraction apparatus according to one of claims 1 to 11, characterised in that the fan (32) represents a radial fan and the fan axis (322) of the fan (32) lies in the horizontal in the vapour extraction apparatus (3).

13. Vapour extraction apparatus according to one of claims 1 to 12, characterised in that the at least one air outlet opening (313) is arranged perpendicularly to the air outlet opening (323) of the fan in the distributor space (312).

14. Kitchen furniture with at least one hob, characterised in that at least one vapour extraction apparatus (3) according to one of claims 1 to 13 is integrated into the kitchen furniture (1).

15. Kitchen furniture according to claim 14, characterised in that the hob (2) is arranged in the upper side of the kitchen furniture (1), the suction opening (30) of the vapour extraction apparatus (3) lies in the region of the hob (2) and the fan (32) lies in the rear region of the kitchen furniture (1).

16. Kitchen furniture according to one of claims 14 or 15, characterised in that at least the distributor space (312) of the vapour extraction apparatus (3) protrudes downwards over the floor of the kitchen furniture.

17. Kitchen furniture according to one of claims 14 to 16, characterised in that the fan (32) of the vapour extraction apparatus (3) lies above the floor (13) of the kitchen furniture (1).