DE102018215480A1 - Vapor extraction device with flap - Google Patents

Abstract

The invention relates to a fume extraction device for a kitchen appliance, which has at least one suction duct (14) with at least one suction opening (10) and at least one closing flap (11) which is pivotably mounted in the suction duct (14) about a pivot axis (D). The extractor device is characterized in that the at least one closure flap (11) is movable over an axis of rotation (D) between an open position and a closed position, and the at least one closure flap (11) is completely in the open position in an edge region of the suction opening (10) Suction shaft (14) is located.

Description

The present invention relates to a fume extraction device with flaps.

It is known in kitchen appliances, especially in cooking appliances, such as hobs provide extractor devices, by means of which resulting contaminated air, especially fumes and vapors, can be sucked off and cleaned. In particular, extractor devices are known, which are arranged next to or behind a hob and are also referred to as table ventilation or Muldenlüftung. These types of extractor device can also be integrated in the hob.

The extractor devices have a suction duct, which comprises at least one suction opening, through which air is sucked into the extractor device. One disadvantage is that objects and contaminants can enter the extraction shaft and therefore the extractor device via the suction opening. For example, in the DE 36 01 460 A a device for the withdrawal of fumes on kitchen appliances described in which at least one closure flap is provided for the suction opening, which is pivotally mounted between an open and a closed position about a fixed axis of rotation and is provided with a drive. In this device, the two closing flaps are preferably pivotally mounted in the central longitudinal axis of the exhaust opening and can be moved by means of movement in opposite directions in the closed position.

A disadvantage of this device is that, in the open position, the closing flaps cover a part of the suction opening in the middle and thus partially obstruct the flow into the suction opening.

The object of the present invention is to provide a fume extraction device in which a reliable opening and closing of the suction opening can be ensured in a simple manner and in which a reliable operation of the fume extraction device is possible even in the open position of the flaps.

The object is achieved by a fume extraction device for a kitchen appliance having at least one suction duct with at least one suction opening and at least one shutter which is pivotally mounted in the suction duct about a rotation axis. The extractor device is characterized in that the at least one closure flap can be moved via the axis of rotation between an open position and a closed position and the at least one closure flap in the open position lies completely in the suction tube in an edge region of the suction opening.

As a vapor extraction device, a device is referred to, can be sucked through the air and preferably cleaned. For this purpose, the extractor device preferably has a fan, which can be referred to as a fan, or is connected to such a blower. The extractor device represents a fume extraction device for a kitchen appliance. The kitchen appliance is preferably a cooking appliance, in particular a hob.

The extractor device has at least one suction duct. The suction duct may also be referred to as a housing and represents the area of the extractor device in which the air is guided after entering the extractor device. The suction duct can represent a separate component or form part of an exhaust duct. In the suction duct and one or more filter elements may be arranged, is released via the incoming air from impurities. However, the filter element (s) may also be provided in the flow direction downstream of the suction chute, for example a distributor housing adjoining the suction chute, in which the sucked-in air flows toward the blower and can be distributed.

The suction duct has at least one suction opening. Air can enter the suction duct via the suction opening. In a fume extraction device, which is arranged in or next to the kitchen appliance, such as a hob, the suction opening is preferably in the horizontal and the suction duct extends from the suction opening downwards. In this case, the extractor device is also referred to as a desk ventilator or tray ventilator.

The suction opening may be formed by the end of the suction shaft. For example, the suction opening form the upper edge of the suction duct. In an alternative embodiment, the extractor device on a cover frame, which covers the upper edge of the suction duct. This cover frame is considered part of the extraction shaft. In this embodiment, the suction opening of the suction duct is formed by the opening in the cover frame.

The extractor device has at least one closure flap. The closure flap, which can also be referred to as a wing, represents a component that is in at least one position covering at least part of the suction opening and thus closes. The closure flap is therefore preferably a flat component. According to the invention, the closure flap may for example be flat or have a curved shape.

The closure flap is pivotably mounted in the suction shaft about an axis of rotation. In this way, the closure flap can be rotated about the axis of rotation in the suction shaft. The axis of rotation lies in a plane which lies at least temporarily in or parallel to the surface of the suction opening. In a horizontally oriented suction opening, the axis of rotation lies in the horizontal.

The extractor device is characterized in that the closure flap can be moved via the axis of rotation between an open position and a closed position and the at least one closure flap in the open position is located completely in the suction tube in an edge region of the suction opening.

In this case, the closed position is the position of the closure flap, in which it at least partially closes off the suction opening. In particular, the closed position is the position in which the surface of the closure flap lies in a plane lying in or parallel to the surface of the suction opening. If only one closure flap is provided, then it covers the entire suction opening in the closed position. If a plurality of closing flaps are provided, they together cover the suction opening completely in the closed position. In the case of a horizontally oriented suction opening, the surface of the closing flap lies or the surfaces of the closing flaps lie in the closed position in the horizontal. With two flaps these are adjacent to each other and preferably touch each other at one edge. This edge of the individual flaps is also referred to as the inner edge. The opposite edge of the individual closing flaps, which is also referred to as the outer edge, abuts in the closed position on an edge of the suction opening.

As the open position, the position of the at least one flap is referred to, in which this largely or completely releases the suction. The suction opening is in the open position, the closure flap (s) not or only slightly obscured. The surface of the flap is in the open position inclined to the surface of the suction opening. In the case of a horizontally aligned suction opening, the surface of the closure flap in the open position is preferably in the vertical.

According to the invention, the at least one closing flap is in the open position in an edge region of the suction opening. As lying in the edge region of the suction opening, the position of the closure flap is referred to, in which the entire surface is located in the vicinity of an edge of the suction opening. The closure flap is preferably vertical in the open position in the case of a horizontal suction opening. In the open position, the closure flap can partially rest against the edge of the suction opening or lie at a small distance from the edge. If two closing flaps are provided, then the two closing flaps lie in opposite edge regions of the suction opening. The closure flaps can lie in the edge region of the suction opening in such a way that the surface of the closure flap, which faces away from the interior of the extractor device in the closed position, faces the edge in whose region the closure flap lies in the open position. Alternatively, the surface of the flaps in the open position facing away from this edge. In the simplest embodiment, the axis of rotation of the closure flap or the axes of rotation of the closure flaps can lie in the edge of the suction opening. In this embodiment, the flaps can be pivoted about the axis of rotation in each case downwards, in particular rotated by 90 °.

The at least one shutter is in the open position completely in the suction shaft. This means that in the open position the closure flap does not protrude beyond the suction opening in the direction away from the suction chute. In the case of a horizontal suction opening, the closing flap thus does not project upwards beyond the suction opening.

An advantage that can be provided by the present invention is that the flow of air that is drawn into the extractor is not obstructed by the shutters. In this way, on the one hand, a maximum entry of air through the suction opening can be ensured. On the other hand, turbulences of the sucked air, which can occur in the open position in the middle of the suction opening when the closing flaps are arranged, can be prevented. Thus, the fan of the extractor device can be operated at a lower power and yet a reliable suction of contaminated air can be ensured. Alternatively, a smaller blower can be used. In addition, by the flap or the flaps in the open position do not protrude beyond the suction opening, the suction of contaminated air can be further improved. In particular, the closure flap does not hinder the flow of air to the suction opening. In addition, this prevents mechanical damage to the flaps or their leadership in a cooking process. In particular, the abutment with the flaps with a cooking vessel, such as a pot can be prevented.

According to a preferred embodiment, the at least one closing flap does not protrude beyond the suction opening during the movement between the open position and the closed position and the movement between the closed position and the open position. In this case, protruding beyond at least a part of the closing flap is understood as being opposite to the direction of flow. With a suction opening which lies in the horizontal, the flow direction is directed downward. In the case of a suction opening arranged in this way, therefore, the at least one closing flap does not project upwards beyond the suction opening during opening and closing. The at least one closure flap is preferably guided, the dimensions of which are selected and their storage is positioned so that the closure flap always lies completely in the extraction shaft. In particular, for this purpose, the projection of the at least one closure flap between a bearing, for example a guide pin, by means of which the closure flap is guided and the edge of the closure flap, which faces upwards in the open position, can be selected as small as possible. In addition, a guide geometry, for example a groove in which the bearing is moved during opening and closing, be adjusted so that it has at least one position at a distance from the suction opening, which corresponds at least to the projection of the closure flap over the storage. Particularly preferably, the distance of the guide geometry from the edge of the suction opening to the center of the suction initially increases and then again. In this way it can be ensured that in the closed position of the closure flap it lies in the area of the suction opening, while during opening and closing the closure flap always lies below the suction opening.

By the fact that the at least one shutter does not protrude beyond the suction opening during closing and opening, it is possible to prevent articles that have been accidentally placed on the suction opening, for example during a cooking process, from being knocked over by the closing flap (s) or the closing flap (n ) or their guidance and drive are damaged by such objects.

The axis of rotation about which the closure flap can be pivoted can be a fixed axis of rotation. In this embodiment, the axis of rotation is preferably in the edge or in the vicinity of the edge of the suction opening. In this embodiment, the closure flap is preferably pivoted or folded downwards in the direction of the suction chute, that is to say in the case of a horizontal suction opening.

According to a preferred embodiment, however, the axis of rotation constitutes a translationally movable axis of rotation. The translationally movable axis of rotation is an axis which can be displaced in addition to the rotation about the axis. The displacement takes place in a direction which is perpendicular to the axis of rotation. The axis of rotation may be formed by a component, for example a displaceably guided shaft, via which the closure flap is mechanically mounted. Preferably, however, the axis of rotation represents an imaginary axis of rotation. The mechanical bearing takes place here at points which are at a distance from the axis of rotation.

By using a translationally movable axis of rotation, it can be ensured on the one hand that the closure flap also during the movement between the open position and closed position, that is, when closing the suction opening, or during the movement between the closed position and the open position, that is when opening the Suction opening, does not protrude beyond the suction opening. In addition, a secure guidance of the closure flap can be ensured when opening or closing the suction opening. In addition, the closure flap can be held securely even in the closed position and accidental opening of the suction opening can be prevented.

According to one embodiment, the at least one closure flap is mounted in the extraction shaft via a groove guide. As a groove guide a guide is referred to, which has at least one groove and at least one sliding element guided therein, in particular rotary sliding element, for example a pin. This arrangement can also be referred to as a slotted guide. By using such a guide a pivoting movement and a translational movement of the flaps can be ensured. In particular, the pin can allow pivoting of the closure flap about its axis and the movement of the pin in the groove, that is the displacement of the pin in the groove, leads to a translational movement of the closure flap. The axis of rotation of the flap is preferably offset from the surface of the flap and represents an imaginary axis of rotation.

Preferably, groove guides are provided at two opposite ends of the closure flap. Particularly preferably, the closure flap has an elongated shape and the groove guides lie in the region of the longitudinal ends of the closure flaps. The flap is mounted on the grooves guide in the suction shaft. For this purpose, the grooves of the groove guide are preferably introduced on or in a wall of the suction duct and the pin (s) are provided on the closing flap or a holder of the closing flap attached to the closing flap. The grooves of the groove guide are also referred to as guide geometry.

Preferably, each closure flap is associated with at least two guide pins which each cooperate with a groove of the groove guide in the suction passage and which extend in a direction parallel to the axis of rotation of the closure flap. By two guide pins are provided, which are each guided in a groove, an uncontrolled pivoting of the flap can be prevented. Preferably, the guide pins are arranged so that they lie in the vicinity of opposite edges of the closure flap, in particular in the vicinity of longitudinal edges of an elongate flap. Thus, the flap can be supported over the width. The guide pins preferably extend in a direction parallel to the axis of rotation of the closure flap. In an elongate flap, the guide pins are thus in the longitudinal direction of the flap.

The guide pins may be arranged so that they project beyond the closure flap at opposite ends of the closure flap. As a result, the guide pins can be easily inserted into grooves provided in or on a wall of the exhaust duct. But it is also possible that the guide pins are aligned inwardly, that are directed from one end of the flap to the opposite end. In this embodiment, the guide geometry, that is, the grooves, must be introduced into a wall which is spaced from the wall of the suction duct.

According to a preferred embodiment, the groove guide comprises at least one groove running at least partially parallel to the suction opening and at least one groove running at least partially perpendicular to the suction opening. In each groove, one of the guide pins is guided. In this embodiment, the groove guide thus has two guide pins.

In a lying in the horizontal suction opening, the first groove extends at least partially in the horizontal. The first groove can hereby run completely or partially straight. However, it is also possible according to the invention that the first groove is completely or partially curved. In this case, the first groove preferably has a convex curvature viewed from the suction opening. The second groove is at least partially vertical in a horizontally aligned suction. This second groove preferably has a plurality of straight portions which are vertical or inclined.

More preferably, the second groove is located near one end of the first groove and extends from the first groove in a direction away from the suction opening. In a horizontally aligned suction opening, the first groove is preferably located in the vicinity of the suction opening to the bottom offset and the second groove extends from a point in the vicinity of the outer end of the first groove down. As the outer end of the first groove, the end is called the end facing the lateral edge of the wall in which the grooves are inserted. The other end of the first groove is called the inner end. By this geometry, the pivoting and displacement of the closure flap can be ensured by a horizontal orientation in the closed position to a vertical orientation in the open position. In the embodiment in which the guide pins are located on the outer edge and inner edge of the closure flap, the closure flap does not protrude beyond the suction opening during opening and closing.

According to one embodiment, the at least one closure flap is fastened to a guide plate which extends perpendicular to the surface of the closure flap and forms a closure element with the closure flap. In the closed position, the at least one guide plate of the closure flap thus projects into the suction chute. Also in the open position, the guide plate is preferably in the suction shaft. Preferably, a guide plate is arranged at each end of the closure flap. By providing guide plates on the one hand, the stability of the closure plate is increased. On the other hand, a larger surface is formed by the guide plate, which extends parallel to a wall in which the grooves of the groove guide are introduced. As a result, a surface is provided on which the guide pins of the groove guide can be provided. According to a preferred embodiment, the guide pins are provided on the guide plate. The guide plate or guide plates can be permanently or detachably attached to the closure flap, for example by means of magnets. The closure element consisting of the closure flap and preferably two guide plates can be introduced as a unit into the extractor device and removed therefrom.

In addition, by providing a guide plate, the advantage can be achieved that the guide groove can be offset downwards at a distance from the surface of the closure flap. This guide is usually introduced into a side wall of the suction duct. If the one or more pins are provided directly on one side of the closure flap, a groove in the immediate vicinity of the extraction opening would be required for a flush closure of the closure flap at the suction opening. This may be difficult for design reasons, and at least the stability of the guide groove upwards is low in this embodiment. When providing a guide plate, these disadvantages are not to be feared.

According to a preferred embodiment, the at least one shutter is automatically driven. So automatic drive is called a mechanical, hydraulic and / or electric drive, which is preferably activated electronically. By not requiring manual operation of the shutters, handling of the fume extractor is simplified. The output may include, for example, a motor, in particular an electric motor. If a plurality of closure plates, in particular two closure plates, are provided, these are preferably moved simultaneously and symmetrically.

According to a preferred embodiment, the extractor device has at least one drive, in which each flap a gear and at least two slides are assigned. As assigned elements are referred to, due to which the position of the shutter, at least temporarily be changed directly or indirectly. Preferably, the gear engages alternately with the first slider and the second slider. The slides are connected via the guide pins with the grooves guide and thus indirectly with the flap. For this purpose, each slider has an opening, which is preferably formed as a slot on. Through this opening, the guide pin can reach through. As a slider components are called, on the one hand have a toothing for engagement with the gear and the other are arranged displaceable in the suction duct. The gear preferably with either the first slider or with the second slider and by rotation of the gear, the slides are moved. The gear is preferably driven by a motor.

According to one embodiment, the drive comprises two slides, wherein a slide is arranged in a direction parallel to the suction opening, in particular in the horizontal direction, and a further slide in a direction perpendicular to the suction opening, in particular in the vertical direction, movable in the suction chute. The slide, which can be moved perpendicular to the suction opening, will also be referred to as the first slide hereinafter. The slide, which can be moved parallel to the suction opening, will also be referred to as the second slide hereinafter.

The extractor device has, for example, a drive for each flap. However, it is also within the scope of the invention that each shutter is associated with two drives, which are arranged at opposite ends of the closure flap, in particular in the region of the end sides of the closure flap in the suction chute. In an advantageous embodiment, a drive arrangement is provided in a fume extraction device with two flaps over which the two flaps can be moved. Such a drive arrangement may comprise two embodiments of the drive described above, which are aligned mirror-inverted.

According to one embodiment, the extractor device on two flaps and two drives, wherein only the gear of a drive is connected to a motor. In this embodiment, the gear of the second drive engages with the gear connected to the motor. The transmission ratio here is preferably 1: 1. By this embodiment, the construction of the extractor device is further simplified. In this embodiment, the two drives are preferably located at a front end of the flaps and form a drive assembly. According to a further embodiment, a drive arrangement can also be provided on the opposite front end of the closure flap. These may optionally have either only one or two motors. According to a further embodiment, a drive arrangement is arranged only at one end face. Here, the drive arrangement may comprise a motor which drives only one gear, or have two motors, each of which drives a gear of one of the drives. On the opposite end side, in this embodiment, preferably only the guide consisting of grooves and pins are provided. It is thus possible according to the invention to drive the flaps of the extractor device with one or two motors.

The drive or the drive arrangement can be arranged in the extraction shaft in the region of the front side of the closure flap. However, it is also within the scope of the invention that the drive or the drive arrangement lie outside the suction duct at its longitudinal ends, that is to say end faces. In this embodiment as well, the grooves in the groove guide are preferably made in the side walls of the suction duct and the guide pins extend through these grooves as far as the outside of the suction duct arranged on this drive or Drive arrangement. In particular, the guide pins engage in slots of sliders of the drive, which are arranged on the outside of the suction duct at this.

According to a preferred embodiment, the extractor device has at least one spring element supporting the engagement of the first slider with the gear. The spring element is aligned so that its spring force acts perpendicular to the suction opening in the direction of the suction opening. In a horizontally oriented suction, the spring force is therefore directed vertically upwards. By the spring element, a game that can exist between the slider and the gear can be compensated. In addition, the transition from the engagement of the gear with the second slider can be supported to the engagement of the gear with the first slider.

• 1: eine schematische Draufsicht auf eine Ausführungsform der Dunstabzugsvorrichtung in der Schließstellung;
• 2: eine schematische Draufsicht auf die Ausführungsform der Dunstabzugsvorrichtung nach 1 in der Offenstellung;
• 3: eine schematische Schnittansicht einer Ausführungsform der erfindungsgemäßen Dunstabzugsvorrichtung in einer Offenstellung;
• 4: eine schematische Ansicht einer Dunstabzugsvorrichtung ohne Verschlussklappen;
• 5: eine schematische Ansicht einer Ausführungsform der Führung der Verschlussklappen in einer Schließstellung;
• 6: eine schematische Ansicht der Führung der Verschlussklappen nach 5 in einer Offenstellung;
• 7: eine schematische Ansicht einer Ausführungsform eines Antriebs einer Verschlussklappe in einer Schließstellung;
• 8: eine schematische Ansicht der Ausführungsform des Antriebs einer Verschlussklappe in einer Offenstellung; und
• 9: eine schematische Ansicht einer weiteren Ausführungsform des Antriebs der Verschlussklappen in einer Schließstellung.

The invention will be explained again below with reference to the accompanying drawings. Show it:

• 1 a schematic plan view of an embodiment of the extractor device in the closed position;
• 2 : A schematic plan view of the embodiment of the extractor device according to 1 in the open position;
• 3 a schematic sectional view of an embodiment of the extractor device according to the invention in an open position;
• 4 a schematic view of a fume extraction device without flaps;
• 5 a schematic view of an embodiment of the guide of the closure flaps in a closed position;
• 6 : A schematic view of the leadership of the flaps after 5 in an open position;
• 7 a schematic view of an embodiment of a drive of a closure flap in a closed position;
• 8th a schematic view of the embodiment of the drive of a shutter in an open position; and
• 9 a schematic view of another embodiment of the drive of the closure flaps in a closed position.

In 1 is a schematic plan view of an embodiment of a fume extraction device according to the invention 1 shown. The extractor device 1 has a cover frame in the illustrated embodiment 13 on, which has a suction opening 10 the extractor device 1 surrounds. In the 1 is the suction opening 10 of two flaps 11 covered. The suction opening 10 has an elongated rectangular shape and the shape of the flaps 11 is therefore each an elongated, strip-like shape. In the embodiment shown, there are two closing flaps 11 intended. These lie in the same plane and are preferably oriented horizontally. The flaps 11 are movable in the fume extractor 1 arranged. This can be the flaps 11 from the in 1 shown closed position to be moved to an open position. The longitudinal edges of the flaps 11 in the closed position at the edge of the suction opening 10 abutment, are referred to below as outer edges. The edges of the flaps 11 with which they rest against each other are also referred to below as inner edges.

In the 2 is the extractor device 1 to 1 shown in plan view in the open position. Here are the below the deck frame 13 and the flaps 11 located components of the extractor device 1 not shown. In the open position, each of the flaps lies 11 in an edge region of the suction opening 10 , In particular, the flaps are 11 in vertical alignment in the areas of the longitudinal edges of the suction opening 10 , In this open position is thus the area of the suction opening 10 only minimally at the longitudinal edges by the vertical shutters 11 covered.

In 3 is a schematic sectional view of the extractor device 1 to 2 shown along the line AA. Here are only the components that are in the area of the suction opening 10 are shown. In addition, the extractor device includes 1 preferably a blower (not shown) or with a to the extractor device 1 separate fan (not shown) connected to the suction opening 10 Air can be sucked in.

In the 3 is the cover frame 13 with the suction opening located therein 10 shown. In this view is the below the suction 10 subsequent suction shaft 14 shown schematically. The suction shaft 14 represents in particular an upwardly and downwardly open rectangular housing and is formed by vertically extending walls. The flaps 11 lie in the edge areas of the suction shaft 14 in the vertical. At each of the flaps 11 is a guide plate in the illustrated embodiment 110 intended. This extends perpendicular to the flap 11 , At the guide plate 110 is a leader 1112 intended. This guide pin 1112 is in a groove (not shown) on the extraction well 14 introduced and is guided in this groove, in particular be moved. In addition, the flap can 11 around the guide pin 1112 to be turned around. The guide pin 1112 can thus in the embodiment shown a movable axis of rotation D ,

Below the suction shaft 14 or at least below the flaps 11 are filter elements in the embodiment shown 15 intended. About these filter elements 15 can remove impurities from the via the suction opening 10 sucked contaminated air to be filtered out. After passing the filter elements 15 the air enters the housing in the illustrated embodiment 16 , is passed over the air to the fan (not shown).

In the 4 is a schematic sectional view of another embodiment of the extractor device according to the invention 1 shown. In the 4 the flaps are not shown. In a wall 140 of the suction shaft 14 Is below the suction opening 10 introduced a guide geometry. This consists in the illustrated embodiment of two first grooves 1110 and two second grooves 1111 , The first grooves 1110 run approximately parallel to the suction opening 10 , In the illustrated embodiment, the first grooves 1110 a curved course. The ends of the grooves 1110 the side edges of the wall 140 are also referred to hereinafter as outer ends and the opposite ends are referred to as inner ends. The outer ends of the first grooves 1110 and the inner ends of the first grooves 1110 lie in one plane and higher than the further course of the grooves 1110 , This can be done when opening and closing the flaps 11 which will be explained in more detail later, prevents the flaps 11 over the suction opening 10 protrude. Also, the inner edge of the flaps 11 does not protrude beyond the suction opening during the movement 10 out.

To every first groove 1110 is in each case an outwardly offset second groove 1111 intended. The second groove 1111 run in approximately perpendicular to the suction opening 10 down and is below the edge of the suction opening 10 arranged. In particular, the second grooves 1111 in the illustrated embodiment, in the upper and lower regions in each case a vertically extending part. The two vertical parts are offset horizontally. In particular, the lower vertical part of the second grooves 1111 at a greater distance to the lateral edge of the wall 140 arranged as the upper vertical part. The vertical parts merge into each other over a sloping area.

Preferably, at the to in the 4 shown wall 140 of the suction shaft 14 opposite wall (not visible) also provided corresponding grooves.

In 5 are the shutters 11 in the suction shaft 14 shown in the in 4 shown grooves 1110 . 1111 be guided. In the illustrated embodiment, each flap has 11 a guide plate 110 on, extending from the surface of the flap 11 extends downwards. The flap 11 and the guide plate 110 are collectively referred to as closure element. At each of the closure elements are two guide pins 1112 . 1113 intended. The guide pins 1112 . 1113 lie in the area of the edges of the flap 11 , In particular, the first guide pins 1112 in the area of the inner edges of the flap 11 and the second guide pins 1113 in the area of the outer edges of the flap 11 arranged. In the illustrated embodiment, the guide pins 1112 . 1113 on the guide plates 110 the closure elements and thus to the closure plates 11 arranged offset down.

In the in the 5 and 6 illustrated embodiment, the first guide pins 1112 in the first grooves 1110 guided and the second guide pins 1113 in the second grooves 1111 , Thus, a folding of the flaps 11 That is, a movement from the closed position to the open position are guided safely.

Be the shutters 11 from the in 5 shown closed position, which is indicated by the arrows in the 5 is indicated schematically, so wander the first guide pins 1112 in the first grooves 1110 outward. At the same time, the second guide pins wander 1113 in the second grooves 1111 downward. In this movement protrudes in the illustrated shape and arrangement of the grooves 1110 . 1111 the flap 11 at no time on the suction 10 in the deck frame 13 out. When moving the flaps 11 These are an imaginary axis of rotation D turned, which shifts in the course of the movement. This is schematically represented by a dots D in 5 shown the imaginary axis of rotation D to a pair of intermediate positions (not shown) of the shutters 11 between the closed position and the open position indicate. In this movement are the flaps 11 always completely in the suction shaft 14 and in particular do not protrude beyond the suction opening 10 out.

Once the second guide pins 1113 the lower end of the second grooves 1111 and the first guide pins 1112 the outer ends of the first grooves 1110 have reached, are the shutters 11 in the open position. This position is in 6 shown. In this position are the surfaces of the flaps 11 , which point in the closed position upwards, the side walls of the suction duct 14 facing and lying in the vertical. Thus, the surfaces are protected from contamination. In addition, in the open position, the suction opening 10 not or only minimally in the edge area by the flaps 11 Covert and contaminated air can reliably enter the suction duct 14 be sucked in. The guide plates 110 are at the longitudinal ends of the flaps 11 intended. Thus, these are in the open position on the walls 140 covering the end walls of the suction shaft 14 represent. The guide plates 110 thus also obstruct the suction opening 10 not or only slightly.

In the 7 is schematically a drive 12 for one of the flaps 11 from the 5 and 6 shown. The drive 12 this includes a gear 120 that is below the flap 11 at the suction shaft 14 is arranged and its axis parallel to the surface of the suction opening 10 lies. In addition, the axis of the gear is 120 parallel to the orientation of the guide pins 1112 . 1113 which extend from the closure element in its longitudinal direction beyond the end face. The drive 12 can in the suction shaft 14 at a front end of the suction shaft 14 be arranged. Preferably, the drive 12 but on the outside of the suction shaft 14 arranged and driven by guide pins 1112 . 1113 through grooves 1110 . 1111 that in the wall 140 of the suction shaft 14 are introduced, reach through, the guide plate 110 and thus the flap 11 at.

To the gear 120 horizontally outwards and vertically offset downwards, that is in the 7 offset to the left and down, is a first slider 121 arranged. The first slider 121 has a cross strut in the illustrated embodiment 1211 and a vertical strut extending upwardly at the outer end 1212 , In addition, the first slider points 121 one in the length of the crossbar 1211 from this upwardly extending rack 1210 on. The teeth of the rack 1210 runs in the vertical, is the gear 120 facing and located in the 7 shown closed position with the gear 120 engaged. The rack 1210 and the vertical strut 1212 may also be summarized and formed by a single strut with teeth (not shown). At the upper end of the vertical strut 1212 a slot is introduced, which extends horizontally.

By a rotation of the gear 120 outward, that is counterclockwise becomes the first slide 121 moved down. Through the slot in the first slide 121 , in particular the vertical strut 1212 , the second guide pin protrudes 1113 which is in the second groove 1111 is passed through. The first slider 121 can between the flap 11 or the guide plate 110 and the wall 140 of the suction shaft 14 lie. Preferably, the first slider is located 121 but on the outside of the wall 140 and the guide pin 1113 extends from the flap 11 or guide plate 110 through the groove in the wall 140 into the slot of the outside of the wall 140 adjacent slide 121 ,

By moving the first slider 121 down is the outer edge of the flap 11 along the second groove 1111 also moved down.

In addition to the first slider 121 is a second slider 122 provided, which is also a rack 1220 having. The teeth of the rack 1220 is directed downwards. In addition, the second slider 122 a slot on, at the outer end of the slider 122 is introduced. In the illustrated embodiment, the slot is in one of the rack 1220 upwardly extending vertical strut 1221 brought in. The slot extends in the vertical. Through this slot, the first guide pin 1112 , are passed through and thereby into the first groove 1110 intervention. Preferably, the drive and thus also the second Scheiber 122 on the outside of the wall 140 of the suction shaft 14 , In this case, the guide pin engages 1112 through the groove 1110 through and extends through the slot of the rack 1220 of the second slider 122 , In the in 7 shown closed position is the toothing of the rack 1220 of the second slider 122 not yet engaged with the first gear 120 , With a rotation of the gear 120 counterclockwise but the guide pin 1112 in the first groove 1110 led to the outside. The one with this guide 1112 connected second slider 122 is therefore also outward, that is in the 7 moved to the left. Once the gear 120 with the second slider 122 is engaged, this is pushed further to the left.

In the open position reaches the second guide pin 1113 the closure element, the lower end of the second groove 1111 and another movement of the flap 11 is thereby prevented.

In addition, in the 7 and 8th a spring element 126 shown. The spring element 126 engages in the in 8th shown open position from below to the first slider. By this spring element 126 becomes a vertical upward spring force on the first slider 121 generated.

With the in 7 and 8th shown drive 12 the opening of the left flaps takes place 11 as follows. The gear 12 is driven by a motor (not shown) and rotated counterclockwise. Through the engagement of the gear 120 with the first slider 121 becomes the first slider 121 moved down. At the same time it becomes the second slider 122 through the first guide pin protruding therefrom 1112 pushed to the left. In the first step of opening is the second slider 122 but not yet engaged with the gear 120 , At the latest at the point where the first slider 121 so far moved down that its rack 1210 no longer engaged with the gear 120 is the second slider 122 in a position where its toothing with the gear 120 intervenes. In the second step of opening the shutter 11 this is therefore due to the second slider 122 emotional. The first slider 121 moves through the guide pin 1113 who is in the groove 1111 wanders down and through the slot in the first slide 121 sticks out, further down.

When closing the flap 11 the steps are carried out in reverse order and with a rotation of the gear in a clockwise direction. In particular, in the first step, the second slider 122 through the gear 120 move to the right. At the same time, the first slider 121 through the guide pin 1113 pulled up. In the second step, after the second slider 122 no longer engaged with the gear 120 stands, engages the gear 120 with the first slider 121 and push it up.

By the spring element 126 the mechanical clearance between the gear and the first slider is compensated and also ensures that the first slider 121 reliable through the first gear 120 is driven when the second step of the closing operation is started. The spring element 126 must apply the upwardly directed spring force to make the transition from the first step to the second step of the closing operation without play.

In 9 is a drive arrangement for both flaps 11 according to the embodiment according to 5 and 6 shown.

This drive arrangement comprises the with respect to 6 and 7 described drive 12 for the left flap 11 , A corresponding drive 12 is for the second right flap 11 intended. The second drive 12 points to the first drive 12 mirrored construction on. The drive 12 for the second, right-hand shutter 11 is different from the drive 12 for the first left flap 11 in that the gear 123 of the second drive 12 only indirectly driven. In particular, the right gear becomes 123 over the left gear 120 driven. In addition, the first two slides 121 . 124 of the first and second drive 12 connected with each other. When presented in the 9 It should be noted that the second slider 122 . 125 the two drives 12 so offset from each other that the gear 120 of the first drive 12 to the second slider 125 of the second drive 12 is offset, that does not intervene with this can. Likewise, the second slider 122 of the first drive 12 so to the gear 123 of the second drive 12 staggered this not with the second slider 122 engages.

Moreover, in the 9 shown that the spring element 126 to the interconnected first slide 121 . 124 intervenes. Thus, via the spring element 126 both the first slider 121 of the first drive 12 as well as the first slider 124 of the second drive 12 pressed up and their engagement with the corresponding gear 120 . 123 guaranteed in the second step of the closing process.

Thus an unwanted opening of the flaps 11 is prevented from the closed position, the first gear 120 via an electric motor (not shown) with a self-locking gear, such as a worm gear done.

It is possible according to the invention that only one drive arrangement, for example, the in 9 shown form is provided. In this embodiment, the movement is thus generated by a drive arrangement at a front end of the closure elements. At the opposite end face of the closure elements but also guides are preferably provided with guide pins and grooves in this embodiment.

Preferably, however, at both ends of the two closure elements drive arrangements, for example according to the in 9 shown embodiment provided. In this way, a rotation of the closure elements can be prevented and it can also be used long closure elements, which then long suction can be closed. In addition, in the provision of several drive arrangements required for the respective drive Motor may be designed smaller or operated at lower power.

The present invention preferably provides a fume extraction device in which in the closed position, which is also referred to as closed position, the two flaps, which are also referred to as wings, are positioned horizontally next to each other and the inlet of the extractor device, in particular the suction or the Opening the cover frame, which can also be referred to as a cover plate, close. In the open position, which is also referred to as the open position, the two wings are preferably positioned vertically below the cover frame of the extractor device and on opposite sides of the suction opening of the extractor device.

The movement of the wings is automated, preferably by several electric motors.

During the movement of opening or closing the extractor, the wings are preferably moved symmetrically and simultaneously. The wings preferably never extend beyond the top of the top panel during the open / close movement. This can prevent any problems due to mechanical collision between the moving blades and any other element, such as a pan, located on the top plate of the extractor device.

In the open position, the surfaces of the flaps, which face upwards in the horizontal closed position of the flaps and are visible to the user, are directed towards the outer wall of the fume extractor, in particular the wall of the suction flue. As a result, the aesthetic surfaces of the flaps are protected from contamination during operation of the extractor device. In addition, the flaps in the open position do not hinder the flow of air in the suction duct.

The flaps are fastened on both sides to guide plates, which can also be referred to as moving parts. The attachment can be done for example by magnets.

The moving parts are each provided with two pins. Each of the pins of a moving part is guided in a specific groove, which may also be referred to as a slot. The geometry of these grooves implies the movement that is transmitted to the moving parts and thus to the wings.

The first slot is partially or completely straight and / or partially or fully arcuate. The second slot consists of several straight lines that are vertical or inclined.

The flaps may be formed of stainless steel, for example. If guide plates, which can also be referred to as wing holders, are provided, the closure plates can be fastened thereto with magnets.

The drive of the flaps is preferably performed by a combined drive wheel / rod mechanism.

The opening / closing movement of each shutter is preferably carried out in two steps. The drive member is preferably a gear. A first vertically aligned slider may shift along the z-axis and a second horizontally-aligned slider shifts along the x-axis. Each of these slides has a slot to drive the guide pins of the flap and / or guide plate through their respective slot.

The present invention is an opening / closing system of the inlet of a fume extractor, in particular a tray ventilation.

A number of advantages can be achieved with the present invention. In particular, a reliable extraction of contaminated air can be ensured with a simple construction of the extractor device. In particular, the air flow is not disturbed by the flaps in the open position. Moreover, with the movement of opening or closing the suction opening, it is possible that the closing flaps never protrude beyond the upper side of the extractor device. As a result, problems due to mechanical collision between the moving flaps and other objects, such as pots and pans, which may be on the extractor device prevented. In addition, the surface of the flaps, which is visible in the closed position for the user to be protected in the open position from contamination.

LIST OF REFERENCE NUMBERS

1

Exhaust hood

10

suction

11

flap

110

guide plate

111

guide

1110

first groove

1111

second groove

1112

first guide pin

1113

second guide pin

12

drive

120

gear

121

first slide

1210

rack

1211

crossmember

1212

vertical strut

122

second slider

1220

rack

1221

vertical strut

123

gear

124

first slide

125

second slider

126

spring element

13

cover frame

14

extraction well

140

wall

15

filter element

16

casing

D

axis of rotation

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 3601460 A [0003]

Claims (14)

Vapor extraction device for a kitchen appliance, which has at least one suction duct (14) with at least one suction opening (10) and at least one closure flap (11), which is mounted pivotably in the suction duct (14) about an axis of rotation (D), characterized in that at least one closure flap (11) is movable over an axis of rotation (D) between an open position and a closed position, and the at least one closure flap (11) lies completely in the suction chute (14) in the open position in an edge region of the suction opening (10). Extractor according to Claim 1 , characterized in that the at least one closure flap does not protrude beyond the suction opening during the movement between the open position and the closed position and the movement between the closed position and the open position. Vapor extraction device according to one of Claims 1 or 2 , characterized in that the axis of rotation (D) represents a translationally movable axis of rotation. Vapor extraction device according to one of Claims 1 to 3 , characterized in that the at least one closure flap (11) via a groove guides (111) in the suction shaft (14) is mounted. Extractor according to Claim 4 , characterized in that each closure flap (11) is associated with at least two guide pins (1112, 1113) each cooperating with a groove (1110, 1111) of the groove guide (111) in the suction chute (14) and extending in one Direction parallel to the axis of rotation (D) of the closure flap (11) extend. Extractor according to Claim 5 , characterized in that the guide pins (1112, 1113) protrude beyond the closing flap (11) at opposite ends of the closing flap (11). Extractor according to Claim 5 or 6 , characterized in that the groove guide (111) at least one at least partially parallel to the suction opening (10) extending groove (1110) and at least one at least partially perpendicular to the suction opening (10) extending groove (1111) and in each groove (1110, 1111) of one of the guide pins (1112, 1113) is guided. Vapor extraction device according to one of Claims 1 to 7 , characterized in that the at least one closure flap (11) is fixed to a guide plate (110) which extends perpendicular to the surface of the closure flap (11) and forms a closure element with the closure flap (11). Extractor according to Claim 8 , characterized in that guide pins (1112, 1113) are provided on the guide plate (110). Vapor extraction device according to one of Claims 1 to 9 , characterized in that the at least one closure flap (11) is driven automatically. Vapor extraction device according to one of Claims 1 to 10 , characterized in that the extractor device (1) has at least one drive (12), in which a closure flap (11), a gear (120, 123) and at least two slides (121, 122, 124, 125) are associated. Extractor according to Claim 11 , characterized in that the drive (11) comprises two slides (121, 122, 124, 125), wherein a first slide (121, 124) vertically and a second slide (122, 125) parallel to the suction opening (10) movable in the suction duct (14) is arranged. Vapor extraction device according to one of Claims 11 or 12 , characterized in that the extractor device (1) has two closing flaps (11) and two drives (12), wherein only the gear (120) of a drive (12) is connected to a motor. Vapor extraction device according to one of Claims 11 to 13 , characterized in that the drive (12) comprises at least one spring element (126) for assisting the engagement of the first slider (121, 124) with the gear wheel (120, 123).

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