Extractor hood for a hob-extract unit and hob-extract unit

Abstract

The present invention relates to a cooktop extractor unit (1), wherein the extractor unit (2) has a cover device (3) comprising at least one flap (30) for covering an extraction opening of the extractor unit (2) and at least one guide geometry (20) extending downwards from the extraction opening, characterized in that the cover device (3) comprises two flaps (30) pivotably mounted on one longitudinal side about an axis (31), that the flaps (30) each have a projection (32) at a distance from the axis (31), which projects beyond the longitudinal end of the flap (30) parallel to the axis (31), and the guide geometry (20) has a semicircular arc-shaped groove (201) at the center of which the axis (31) of the cover device (3) is located. The invention further relates to a cooktop extractor unit (1) with such an extractor unit (2).

Description

[0001] The present invention relates to a cooktop extractor hood and a cooktop extractor hood.

[0002] It is known to provide a cooktop with a range hood by means of which fumes and vapors produced during cooking on the cooktop can be extracted downwards and cleaned. The range hood is preferably integrated into the cooktop in such a way that the extraction opening of the range hood's extraction duct is located within the surface of the cooktop. To prevent, for example, the entry of liquids and objects into the extraction duct and, if necessary, to regulate the airflow into the extraction duct, it is known to install cover flaps at the extraction opening that at least temporarily close it.

[0003] Such a range hood with cover flaps is described, for example, in DE 10 2018 215 480 A1. In this ventilation unit, at least one cover flap is rotatably mounted in the ventilation duct and, when open, lies in an edge region of the extraction opening. A disadvantage of this ventilation unit is that, particularly in an embodiment with two cover flaps, motorized control and handling of the cover flaps are complex.

[0004] The object of the present invention is therefore to create a solution that has a simple structure.

[0005] According to a first aspect, the invention relates to a cooktop extractor unit, wherein the extractor unit has a cover device comprising at least one flap for covering an extraction opening of the extractor unit and at least one guide geometry extending downwards from the extraction opening. The extractor unit is characterized in that the cover device comprises two flaps pivotably mounted about an axis on one longitudinal side, that the flaps each have a projection at a distance from the axis, which extends beyond the longitudinal end of the flap parallel to the axis, and that the guide geometry has a semicircular arc-shaped groove, at the center of which the axis of the cover device is located.

[0006] Directional terms such as "top" and "bottom" refer – unless otherwise specified – to a cooktop with integrated extractor hood in its installed state, with the cooktop lying horizontally. In particular, the cooktop is preferably installed in a worktop. Regarding the flaps, directional terms such as "top," "bottom," and "width" refer – unless otherwise specified – to the flaps in a horizontal position.

[0007] A cooktop extractor unit is a device that includes a cooktop with an integrated extractor fan, in which at least one extraction opening for the extractor fan is arranged in or adjacent to the surface of the cooktop. The extraction opening forms the upper end of an extraction duct, which can also be referred to as an extraction channel. The lower end of the extraction duct is preferably connected to the extractor fan's blower, which can also be called a fan or ventilator.

[0008] The extractor hood, which can also be called an extractor fan, preferably has a fan and a downward-facing extraction duct. The fan is located below the cooktop. Viewed from above, the fan can be positioned within the cooktop surface or offset towards the outside of the cooktop surface.

[0009] The extractor hood preferably comprises an extraction duct with an extraction opening at its upper end, a fan, and a filter element. The filter element(s) may be housed within the extraction duct. According to one embodiment, the extractor hood has two filter elements arranged in a V-shape within the extraction duct. The extractor hood and the cooktop may be housed in a common casing. The cooktop extractor unit may also be referred to as a cooking extraction device or cooking extraction system.

[0010] The cooktop preferably has a cover plate with a recess in which the extraction opening of the extractor hood is located, either in or below the recess. The recess therefore preferably has a shape and size that corresponds to the shape and size of the extraction opening.

[0011] According to the invention, the extractor hood includes a cover device. A cover device is defined as a device by which the extraction opening can be temporarily closed at the top. According to the invention, the cover device comprises two flaps. A flap is defined, for example, as a plate that has at least one bearing element by which the flap can be pivotally mounted. The bearing element can be a rounded recess or a tubular eyelet. The flaps preferably each have the shape of an elongated rectangle. The longer sides of the flap are referred to as the longitudinal sides and the shorter sides as the longitudinal ends. The width of the flap is its dimension parallel to the longitudinal ends.

[0012] According to the invention, the cover device has an axis. The axis can be formed by a rod. The flaps of the cover device are pivotable about this axis.

[0013] Furthermore, according to the invention, the cover device has at least one guide geometry. A guide geometry is defined as a device in which at least one groove is provided for guiding the movement of the flaps. The guide geometry can therefore be a plate or wall with at least one groove provided in it. The guide geometry extends downwards from the extraction opening. In particular, the guide geometry can be attached to a wall of the extraction duct or be formed by a wall of the extraction duct.

[0014] According to the invention, the two flaps of the cover device are pivotably mounted about an axis. This axis can therefore also be referred to as the common axis of the flaps. The flaps are pivotally mounted about this axis on one longitudinal side. For this purpose, each flap can have a bearing element on one longitudinal side. The width of each flap preferably corresponds to half the width of the extraction duct. The axis is located at the center of the width of the extraction duct.

[0015] The flaps also each have a projection at a distance from the axis. This projection can be formed, for example, by a pin or the end of a rod. The projection is located at a distance from the axis on the flap, particularly from the bearing element on the longitudinal side of the flap, and extends beyond the longitudinal end of the flap parallel to the axis. The projection can be located on the longitudinal side of the flap opposite the longitudinal side where the flap is mounted on the axis. Alternatively, the projection can also be located at a distance from this opposite longitudinal side.

[0016] According to the invention, the guide geometry has a semicircular arc-shaped groove. The axis of the cover device lies at the center of the semicircular arc-shaped groove. The center of the semicircular arc-shaped groove is defined as the center of the circle whose semicircle defines the semicircular arc-shaped groove. This semicircle is the lower semicircle of the circle. The upper ends of the semicircular arc-shaped groove therefore lie within the horizontal diameter of the circle.

[0017] By mounting the flaps on a central axis, simple movement around a fixed and stable pivot point is enabled. The semicircular groove also facilitates easy movement around the center of the axis. In the extractor hood according to the invention, the flaps can thus be easily pivoted downwards. Due to the semicircular groove and the projection of the flap guided within it, each flap can be pivoted downwards from a horizontal position, in which it closes the extraction opening. The horizontal position is therefore also referred to as the closed position. The flaps can be pivoted downwards to a vertical position. The vertical position can also be referred to as the open position. In this position, the flaps are aligned downwards, parallel to each other.

[0018] According to a preferred embodiment, the flaps are attached to the axis of the cover device. This connects the flaps to each other via the axis. The attachment can be achieved, for example, by a bearing element, which is a tubular eyelet. The axis can pass through the bearing element. In this embodiment, at least one bearing element is provided on each flap. The position of the bearing elements of one flap relative to the bearing elements of the second flap can be offset along the axis. Because the flaps are attached to the axis, they can be moved together with respect to the extraction duct of the extractor hood, and in particular, removed from and inserted into it.

[0019] According to one embodiment, the guide geometry below the axis has a vertical groove whose length corresponds to the radius of the semicircular arc groove. The vertical groove thus transitions into the semicircular arc groove at its lower end. By providing a vertical groove, the projections of the flaps can be guided upwards over the vertical groove when the flaps are oriented vertically, allowing the flaps to be removed from the extractor hood.

[0020] Preferably, the width of the vertical groove corresponds at least to the sum of the widths of the flap projections. The width of the projection is defined as its dimension in the lateral direction of the extractor hood. In the case of a round projection, the lateral direction represents the diameter of the projection.

[0021] Preferably, the cover device has two guide geometries arranged at opposite longitudinal ends of the extraction duct of the extractor hood. In this embodiment, each of the flaps has a projection at each of its longitudinal ends.

[0022] According to a preferred embodiment, the cover device has a fixing plate that limits the guide geometry upwards. In particular, the fixing plate covers an upwardly open vertical groove of the guide geometry. This allows the axis to be held on or in the upper region of the vertical groove in a closed position and during the opening and closing of the flaps. Additionally, the fixing plate can also cover the upper ends of the semicircular arc-shaped groove upwards. This limits the upward opening of the semicircular arc-shaped groove.

[0023] According to a preferred embodiment, the fixing plate is detachably attached to the extractor hood. The fixing plate can, for example, be snapped into place on the extraction duct or a recess in the cooktop. Because the fixing plate is detachably attached to the extractor hood—that is, it can be connected to and removed from the hood without damage and preferably without tools—it becomes easy to remove the hood flaps, for example, for cleaning purposes or to access filter elements located below the flaps. Removing the flaps allows the axle to be moved upwards. In the embodiment where the flaps are attached to the axle, the flaps can therefore be removed together.In one embodiment where the axle is received in or placed upon the vertical groove, which is open at the top, and the semicircular groove is also open at the top, the flaps can be removed from the extractor hood in the closed position after the fixing plate has been removed. In another embodiment where the semicircular groove is closed at its upper ends, the flaps can be removed upwards after they have been brought into the open position, i.e., the vertical position, and the projections of the flaps are guided through the vertical groove.

[0024] As an alternative to a detachable fixing plate, it can also be pivotally mounted on the extractor hood. In this embodiment, the fixing plate can be pivoted upwards from a horizontal position, thus releasing at least the fixing of the axis of the cover device. The flaps can then be removed as described for the embodiment with the detachable fixing plate.

[0025] According to a preferred embodiment, the cover device has a motorized drive for moving the flaps. In addition to a motor, the drive may, for example, include one or more gears, rotary wheels, or other drive elements. The drive is preferably arranged outside the exhaust duct of the extractor hood. According to one embodiment, the drive acts on the respective projection of the flaps within the semicircular groove. Here, for example, the groove may be a slot, and the projection may extend beyond the depth of the groove. According to an alternative embodiment, the drive engages a bearing element of the respective flap, by which the flap is mounted on the axis. However, the invention is not limited to a specific embodiment of the motorized drive.The extractor hood according to the invention, due to the fixed pivot point, enables easy movement of the flaps through the guide in the semicircular arc-shaped groove, allowing for easy control and motor-driven movement of the flaps.

[0026] According to a further aspect, the invention relates to a cooktop extractor unit comprising a cooktop and an extractor hood. The cooktop extractor unit is characterized in that it has an extractor hood according to the invention.

[0027] Advantages and features described for the cooktop extractor unit apply – where applicable – to the extractor hood and vice versa.

[0028] According to a preferred embodiment, the extraction opening of the extractor hood is located in or below a recess in the cooktop, which is centrally located in the cooktop. The recess is preferably an elongated, rectangular recess. The recess preferably extends in the depth direction of the cooktop.

[0029] According to one embodiment, the axis of the cover device is arranged such that, in the closed position, the upper surface of the flaps forms a flat surface with the cooktop surface, and in the open position, the flaps do not protrude beyond the cooktop surface. According to one embodiment, the flaps have a leveling layer applied to the upper surface of a base plate of the flaps, the thickness of which, when the flaps are closed, corresponds to the distance between the axis and the cooktop surface, in particular the surface of a cover plate of the cooktop.

[0030] The invention is described again below with reference to the accompanying figures. These show: Figure 1: a schematic top view of a first embodiment of the cooktop extractor unit according to the invention; Figure 2: a schematic, perspective sectional view of the first embodiment of the cooktop extractor unit according to the invention with the flaps closed; Figure 3: a detailed view of the front area of ​​the cooktop extractor unit according to the invention. Figure 2Figure 4: A schematic, perspective sectional view of the first embodiment of the cooktop extractor unit according to the invention in a partially open state of the flaps; Figure 5: A schematic, perspective sectional view of the first embodiment of the cooktop extractor unit according to the invention in a fully open state of the flaps; Figure 6: A schematic, perspective top view of the first embodiment of the cooktop extractor unit according to the invention in the fully open state of the flaps; Figure 7: A schematic, perspective sectional view of the first embodiment of the cooktop extractor unit according to the invention in a first state of removal of the flaps; Figure 8: A schematic, perspective sectional view of the first embodiment of the cooktop extractor unit according to the invention in a second state of removal of the flaps;Figure 9: a schematic, perspective sectional view of the first embodiment of the cooktop extractor unit according to the invention, in a third state of removal of the flaps; Figure 10: a schematic, perspective sectional view of a second embodiment of the cooktop extractor unit according to the invention, in a first state of removal of the flaps; Figure 11: a schematic, perspective sectional view of the second embodiment of the cooktop extractor unit according to the invention, in a second state of removal of the flaps; Figure 12: a schematic, perspective top view of the second embodiment of the cooktop extractor unit according to the invention, in the second state of removal of the flaps; and Figure 13: a schematic, perspective detail view of the front area of ​​the second embodiment of the cooktop extractor unit according to the invention. Figure 12 .

[0031] The same reference numerals are used for identical parts in the figures. These are described only once, if necessary, and, in the case of multiple views of an embodiment, are only indicated once in the figures.

[0032] In Figure 1 Figure 1 shows a schematic top view of a first embodiment of the cooktop extractor unit 1 according to the invention. The cooktop extractor unit 1 consists of a cooktop 10 and an extractor hood 2. In the embodiment shown, the cooktop 10 has a cover plate 12 in which cooking zones 11 are formed by heating modules arranged in or below the cover plate 12. A recess 13 is provided in the center of the width of the cover plate 12. The recess 13 has an elongated, rectangular shape and extends in the depth direction of the cover plate 12.

[0033] In front of recess 13 is in Figure 1A control unit 4 is shown schematically, which can be used to operate the hob 1 and / or the extractor hood 2.

[0034] The extractor hood 2 has a cover device 3. In Figure 1 Only the flaps 30 and fixing plate 33 of the cover device 3 are visible of the extractor hood 2. The cover device 3 has two flaps 30, each with an elongated rectangular shape. The flaps 30 lie in the recess 13 and completely cover it. The combined width of the two flaps 30 therefore corresponds to the width of the recess 13. The length of the flaps 30 is less than the length of the recess 13. The difference in the length of the flaps 30 compared to the length of the recess 13 is covered by a fixing plate 33, which, in the illustrated embodiment, is arranged at the front longitudinal end of the recess 13.

[0035] In Figure 2is a schematic, perspective sectional view of the first embodiment of the cooktop extractor unit 1 according to the invention. Figure 1 shown in a closed state of flaps 30. In the Figure 2 Only the front part of the cooktop extractor unit 1 and the extractor hood 2 are shown. A suction duct extends below the recess 13 of the cooktop 10 (in Figure 2 (not shown) downwards. Filter elements 21 are arranged in the extraction shaft. Figure 2 Only one filter element 21 is visible. The filter element 21 is arranged at an angle in the extraction shaft and forms a structure with another in Figure 2 The non-visible filter element has a V-shape. A guide geometry 20 is arranged below at least one longitudinal end of the recess 13.

[0036] As can be seen from Figure 3As can be seen more precisely, a vertical groove 200 and a semicircular arc-shaped groove 201 are provided in the side of the guide geometry 20 that faces the recess 13 and can also be referred to as the inside. In the Figures 2 and 3 Only half of the grooves 200, 201 are visible.

[0037] In the illustrated embodiment, the flaps 30 have bearing elements 300 in the form of tubular eyelets. The axis 31 of the cover device 3 extends through the bearing elements 300. In addition, the flaps 30 in the illustrated embodiment have a base plate (in Figures 2 and 3(not visible) and a leveling layer 302 applied to it. The fixing plate 33 has a height corresponding to the height of the leveling layer 302. The fixing plate 33 rests on the axis 31 with a surrounding bearing element 300. This holds the axis 31 in a position where its longitudinal end rests on the upper end of the vertical groove 200.

[0038] In Figure 4 Figure 1 shows a schematic, perspective sectional view of the first embodiment of the cooktop extractor unit 1 according to the invention in a partially open state of the flaps 30. As can be seen from this figure, when the flap 30 is pivoted downwards, the axis 31 is held firmly in its original position, while the projection 32, which extends at a distance from the axis 31 and the lower longitudinal side of the flap 30, is guided downwards in the semicircular arc-shaped groove 201. Figure 5The position of flap 30 is shown, in which flap 30 lies vertically in the recess 13 and which is also referred to as the open position. In this position, the projection 32 lies at the lower end of the vertical groove 200. The open position of flap 30 is shown in Figure 6 shown again in a perspective top view of the first embodiment of the cooktop extractor unit 1 according to the invention.

[0039] In order to remove the flaps 30 from the extractor hood 2 in this open position, the fixing plate 33 must be moved so that it no longer holds the axis 31 on the top of the vertical groove 200. In the Figures 7 to 9 The extraction process is shown schematically. As can be seen from Figure 7In the first embodiment, the fixing plate 33 is pivotably attached to the extractor hood 2. Folding the fixing plate 33 outwards releases the axis 31 upwards. Pulling the axis 31 upwards also pulls the flaps 30 mounted on it upwards. The projections 32 are guided in the vertical groove 200.

[0040] In Figures 10 and 11Figure 1 shows a schematic, perspective sectional view of a second embodiment of the cooktop extractor unit 1 according to the invention. The second embodiment differs from the first embodiment in that the fixing plate 33 is not pivotally mounted on the extractor 2, but is detachably attached. After detaching and removing the fixing plate 33, the flaps 30 can be removed upwards in accordance with the procedure described for the first embodiment, and the projections 32 are guided in the vertical groove 200.

[0041] The removed state of the flaps 30 in the second embodiment is shown in the Figure 12 and 13 shown in more detail. In this perspective top view, it can be seen that the flaps 30 are parallel to each other in this state and that the projections 32 of the flaps 30 are in contact with each other.

[0042] The present invention thus provides a motor-controlled flap solution for a cooktop ventilation unit that is as simple and cost-effective to manufacture as possible. In particular, it creates a technically simple and robust concept for motorized ventilation flap control for cooktops.

[0043] In the invention, the extraction shaft is preferably closed by two flaps, both of which are laterally mounted on a central axis of the extraction shaft. The opposite side of each flap is guided in two circular segments on the upper and lower sides of the extraction shaft.

[0044] The mounting of the two flaps on a central axis within the shaft allows for easy movement around a fixed and stable pivot point; the circular segments facilitate simple movement around the axis's center point. This movement is easy to control and can be motorized.

[0045] The two flaps should preferably be connected to each other on the axis, so that they can be easily removed and inserted for cleaning or filter changes.

[0046] Ideally, the pivot points in the extraction duct are positioned so that, when closed, the flaps form a flat surface with the cooktop surface, and when open, the flaps do not protrude beyond the cooktop surface.

[0047] The present invention offers several advantages. Firstly, the combination of an axis and a circular segment guide creates a simple and clearly defined movement. Furthermore, the axis ensures stable mounting of the flaps. Additionally, the flaps can be easily disassembled and reassembled for cleaning and filter replacement. Due to the simple movement of the flaps, they are well-suited for motor control. This simple and stable movement and mounting concept makes it a cost-effective solution. Reference symbol list

[0048] 1 Cooktop ventilation unit 10 Cooktop 11 Cooking zone 12 Cover plate 13 Recess 2 Extractor hood 20 Guide geometry 200 Vertical groove 201 Semicircular arc groove 21 Filter element 22 Extraction duct 3 Cover device 30 Flap 300 Bearing element 301 Base plate 302 Leveling layer 31 Axis 32 Projection 33 Fixing plate 4 Control panel

Claims

1. Extractor hood for a cooktop extractor unit (1), wherein the extractor hood (2) has a cover device (3) comprising at least one flap (30) for covering an extraction opening of the extractor hood (2) and at least one guide geometry (20) extending downwards from the extraction opening, characterized by the fact that the cover device (3) comprises two flaps (30) which are pivotably mounted on a longitudinal side about an axis (31), such that the flaps (30) each have a projection (32) at a distance from the axis (31) which extends beyond the longitudinal end of the flap (30) parallel to the axis (31), and the guide geometry (20) has a semicircular arc-shaped groove (201) in the center of which the axis (31) of the cover device (3) is located.

2. Extractor hood according to claim 1, wherein the flaps (30) are attached to the axis (31).

3. Extractor hood according to one of claims 1 or 2, wherein the guide geometry (20) below the axis (31) has a vertical groove (200) whose length corresponds to the radius of the semicircular arc-shaped groove (201).

4. Extractor hood according to one of claims 1 to 3, wherein the cover device (3) has two guide geometries (20) which are arranged at opposite longitudinal ends of the extraction duct (22) of the extractor hood (2).

5. Extractor hood according to one of claims 1 to 4, wherein the cover device (3) has a fixing plate (33) which limits the guide geometry (20) upwards.

6. Extractor hood according to claim 5, wherein the fixing plate (33) is detachably attached to the extractor hood (2) or is pivotably mounted on the extractor hood (2).

7. Extractor hood according to one of claims 3 to 6, wherein the width of the vertical groove (200) corresponds to the sum of the widths of the projections (32) of the flaps (30).

8. Extractor hood according to one of claims 1 to 7, wherein the cover device (3) has a motor drive for moving the flaps (30).

9. Cooktop extractor unit comprising a cooktop (10) and an extractor hood (2), characterized by the fact that the extractor hood (2) is an extractor hood (2) according to one of claims 1 to 8.

10. Cooktop extractor unit according to claim 9, wherein the extraction opening is located in or below a recess (13) of the cooktop (10) which is provided centrally in the cooktop (10).

Images