EP3299726B1 - Vapour extraction device with cover for a housing aperture of the housing of the vapour extraction device - Google Patents

Description

The present invention relates to an extractor device with a cover for a housing opening in the extractor housing of an extractor device.

Conventional extractor hoods have filter surfaces for separating grease from the air-water-grease mixture that is created during cooking, which is also known as vapor. Metal mesh filters or expanded metal filters are usually used here, which are located on the underside of the extractor hood facing the hob.

For extractor devices, in particular extractor hoods, it has been proposed in recent years that the extraction opening of the extractor hood, which can also be referred to as the housing opening of the extractor housing, be largely covered with a baffle plate. This type of suction is also known as edge suction. Edge suction means that the actual filter surfaces, which are located in the housing opening or behind the housing opening in the direction of flow, are covered by a metal or glass cover. Around this cover, which is also referred to as a baffle plate, runs a circumferential gap, into which vapor enters or is sucked in. The advantage of this device design is that it has a good overall appearance and any contamination of the filter surface is not obvious. A disadvantage, however, is that even in the state in which the extractor device is not used, the edge gap is open and impurities such as dust and the like can enter the extractor device and can be deposited on the filter elements. In addition, odors can possibly escape through the edge gap.

From the DE 103 09 226 A1 a cooking device is known in which a hob can be received in the underside of an extractor hood and this can be closed over it. The hob is guided over telescopic rods and driven manually and / or by motor. A disadvantage of this device is to one in the complex structure of the device and on the other hand in the large amount of space required.

The DE 34 04 004 A1 discloses an exhaust and supply air device for a hob. According to one embodiment, the device comprises a hood part on which a device structure of the extractor hood sits at the top. An exhaust air chamber and a supply air chamber, in each of which a fan is arranged, are formed in the device structure. An opening is formed between part of the exhaust air chamber and part of the supply air chamber. This opening can be closed by a flap. A Bowden cable is connected to a lever that is firmly connected to the hinge axis of the flap. The lever is located in the chamber part of the supply air chamber, while the flap is located in the chamber part of the exhaust air chamber.

In the U.S. 3,131,688 A describes an air treatment device for household appliances. The device has a fan which is arranged in a housing. An opening is made in the top of the housing. A duct leads from the interior of a furnace to another duct through which air is conducted to the opening. A damper is provided in the transition between the channels. The damper is in the form of a plate that can be pivoted via an actuating arm. An operating wire through which the damper can be operated is attached to the operating arm.

The object of the present invention is therefore to create an extractor device which has an improved visual appearance with a simple structure, but which nevertheless allows reliable extraction of fumes and vapors and safe operation of the extractor device and in which the space requirement is minimized.

The invention is based on the knowledge that this object can be achieved by using a force transmission element that allows the cover to be influenced from a distance.

The object is achieved according to the invention by an extractor device with the features of claim 1.

A fume extractor device is a device by means of which vapors and vapors, which arise, for example, during cooking, can be sucked in and cleaned, in particular filtered. The extractor device is a ceiling fan or a table fan. The extractor device has an extractor housing. At least one filter element is preferably arranged in this extractor housing. The filter element or the filter elements are preferably flat filter elements, which can also be referred to as filter cassettes. In addition, the fan of the extractor device is preferably arranged in the extractor housing. The extractor housing has a housing opening, which can also be referred to as a suction opening. Air can enter the extractor housing via this housing opening, at least in some areas.

The extractor housing can be attached to or inserted into the ceiling of the room in which the extractor device is operated. The extractor housing can also be attached indirectly to the ceiling, for example by means of ropes or wires, which can optionally also be adjustable in length. The extractor housing is preferably installed in the ceiling of the room. In the case of a table-top ventilator, which is also referred to as a downdraft ventilator, the extractor housing is integrated in a worktop next to a hob or in the hob.

The extractor device according to the invention also has at least one cover for at least part of the housing opening. A cover is a component, which is preferably a plate or flap, which is arranged so that it lies in front of the filter element in the direction of flow and at least partially covers the filter surface in a vertical projection onto the filter surface of the filter element. The cover lies at least temporarily in the housing opening or lies in the area of the housing opening. The cover closes the housing opening either alone or together with other parts, such as a center plate.

According to the invention, the cover is movably mounted in relation to the extractor housing. In particular, the cover can have a translational movement and / or a translational movement relative to the extractor housing and in particular the housing opening Perform swivel movement. The cover can preferably be brought into at least two different positions, one being referred to as the rest position and one as the operating position. In the rest position, the cover is in a state in which it rests against the extractor housing or is received in this in the housing opening. In the operating position, the cover is in a state in which at least a part of the cover is located away from the extractor housing, that is, it is not located in the extractor housing and not in the housing opening and air can thereby enter the extractor housing. If the cover is in the operating position, the extractor device can be operated, that is, contaminated air can be sucked in and cleaned, in particular filtered.

The extractor device comprises an actuating device. The cover can be moved by means of the actuating device. In particular, the cover can be moved at least from one position to another position. Particularly preferably, the cover is brought by the actuating device from a rest position into an operating position or from the operating position into the rest position. The transition between these two positions can take place continuously. The cover can be stopped in any intermediate position.

The actuating device comprises at least one Bowden cable. A power transmission element is referred to as a Bowden cable, which consists of at least one inner cable, which can also be referred to as an inner cable or pull cable, and a sleeve, which can also be referred to as a pull sleeve. The inner rope can consist of wire, in particular steel wire. According to the invention, the inner rope can preferably transmit tensile forces. According to one embodiment, however, the inner rope is designed such that it can also transmit compressive forces in addition to the tensile forces. In this embodiment, the inner cable can be designed as a flexible shaft that is pressure-resistant in the longitudinal direction. The sheath of the Bowden cable is preferably rigid in the longitudinal direction of the inner cable, in particular the pulling direction of the inner cable, that is to say pressure-resistant. The sheath thus acts as a guide for the inner rope. In addition, when tensile forces are applied by means of the inner rope, the sheath acts as a counter-bearing for the tensile forces that are to be exerted on the inner rope (s).

The Bowden cable is arranged such that at least one end of the Bowden cable is connected to the side of the cover that faces the interior of the extractor housing. The connection with this side of the cover can be made directly or indirectly. In the case of an indirect connection, for example, a connecting element, which can represent a rigid rod element, is attached to the cover and one end of the Bowden cable is connected to the end of the connecting element that faces away from the cover. The side on which the Bowden cable is connected to the cover is the side that faces the interior of the extractor housing and thus preferably the filter element or elements. This side is the top of the cover in the case of an extractor device, which is a ceiling fan with a horizontally lying housing opening. In the case of an extractor hood device, which is a table fan with a horizontally lying housing opening, this side is the underside of the cover. Since the Bowden cable is connected to the cover on this side, it can apply an upward or downward tensile force to the cover and / or, in the case of a rigid inner cable, apply an upward or downward pressure force. The Bowden cable can thus bring the cover from an extended or folded-out position, that is to say the operating position, into the rest position, in particular pulled or pushed.

The invention is described below for better understanding using an extractor device with an actuating device that has a Bowden cable with an inner cable. Preferably, however, several fastening devices or one fastening device with several Bowden cables or with a Bowden cable with several inner cables are used.

The advantage of using at least one Bowden cable in the actuating device of the extractor device is that the location of the application of force to the Bowden cable can be at a distance from the cover. Thus, the installation space that is required directly above or below the cover is minimized. In addition, for example, a drive motor for the Bowden cable can be arranged in the extractor device at a location that is outside the direct flow path of the air to be cleaned. In this way, the reliable suction of air and the reliable operation of the extractor device can be guaranteed and the drive motor can be protected from contamination.

According to a preferred embodiment, the Bowden cable comprises at least one inner cable and a sheath and the inner cable is connected to the cover. If several inner ropes are provided, they can be connected with a cover or with different covers. In particular, several inner cables of a Bowden cable can be connected to a cover at different points. As a result, the force can be applied evenly to the cover. If several covers are provided, at least one Bowden cable is preferably used for each cover. The inner rope preferably has a greater length than the sheath. The connection of the inner rope to the cover can be done indirectly or directly. In particular, the inner cable can be attached, for example, to a connecting element that is provided on the top of the cover or, in the case of a table ventilator, on the underside of the cover. The connecting element can be a rigid element, for example a rod.

According to a preferred embodiment, at least one spring element which can exert a compressive force on the cover is arranged on the cover. The spring element is therefore preferably a compression spring, which can be, for example, a helical spring or a leg spring. The spring element is arranged so that it can exert a compressive force on the cover. This embodiment with a spring element is particularly preferred in the case of a Bowden cable in which the inner cable has a low strength and, in particular, cannot transmit any compressive forces. In particular, the compressive force of the spring element acts in a direction that opposes the tensile force that can be applied to the cover by the Bowden cable. The spring element can act on the side of the cover on which the Bowden cable is connected to the cover. Alternatively, however, it is also possible that the spring element is provided, for example, in a hinge which lies on an edge of the cover and via which the cover can be pivoted relative to the housing opening. The cover is brought into an operating position by the spring element, which can also be referred to as the active position. The spring element is therefore pretensioned in the rest position and preferably relaxed in the operating position. One advantage of using a spring element that moves the cover into an operating position is that the force required to move the cover from the operating position to the rest position is low. Thus, on the one hand, the requirements for the Bowden cable and a preferably provided drive motor are reduced. On the other hand, the tensile force that has to be applied via the Bowden cable is low, so that there is protection against trapping for the user who would only feel this lower tensile force when jammed.

According to an embodiment according to the invention, the actuating device has a winding unit in which at least a part of at least one inner cable of the Bowden cable can be wound. The winding unit is preferably provided at the end of the Bowden cable that faces away from the cover. At least at this end, the inner rope protrudes beyond the sheath and can thus be wound onto a roll. By using a winding unit, the amount by which the cover can be moved by the tensile force or compressive force applied by means of the Bowden cable is increased with little space requirement.

According to a preferred embodiment, at least one roller and at least one drive motor for driving the roller are provided in the winding unit. The inner rope is attached to the pulley at one end. By driving the roller by means of the drive motor, the inner rope is wound up. For this purpose, the roller is preferably mounted on the motor shaft of the drive motor. The role can be a rotationally symmetrical, a non-rotationally symmetrical, an eccentric and / or a central role.

According to the invention, the roller is fastened to the motor shaft of the drive motor and a slip clutch is arranged between the roller and the motor shaft. By providing a slip clutch, a further protection against trapping can be created for the user when moving the cover from the operating position into the rest position.

According to an embodiment of the invention, at least one tension spring is integrated in at least one inner cable of the Bowden cable. This embodiment is particularly advantageous in the case of a Bowden cable in which tensile force is to be applied to the cover. This tension spring can provide additional protection against trapping. The tension spring is preferably provided in the area of the inner rope in which this over the shell protrudes. This area can lie between the cover and the end of the sleeve facing the cover or in the area of the other end of the Bowden cable, in particular between a winding unit and the end of the sleeve facing this unit.

According to the invention, it is possible that the actuating device serves exclusively to bring the at least one cover from an operating position to a rest position in the case of a ceiling fan or, alternatively, from a rest position to an operating position in the case of a table fan. In these embodiments, the opposite movement from the rest position into the operating position or, alternatively, from the operating position into the rest position can take place, for example, by gravity.

According to a preferred embodiment, however, the cover can be brought into a rest position and into an operating position via the actuating device. According to one embodiment, this movement of the cover in two opposite directions is realized by a Bowden cable, the inner cable of which is rigid in the longitudinal direction and can thus transmit compressive forces and tensile forces. Alternatively, in addition to the at least one Bowden cable, the actuating device preferably comprises at least one element which applies a force to the cover which is opposite to the tensile force which is applied by the Bowden cable. In particular, the actuating device therefore preferably comprises a spring element which applies a compressive force to the cover.

The cover of the extractor device can be a baffle plate or a flap.

A baffle plate is a plate which, in the operating position, forms a circumferential gap with the extractor housing through which air can enter the extractor housing. The baffle plate covers at least part of the housing opening of the extractor housing and in particular of the filter element or elements arranged in the extractor housing in the direction of flow. In particular, the baffle plate covers at least part of the filter surface, that is to say the inflow side of the filter element or elements. In the rest position, the baffle plate preferably closes the entire housing opening of the extractor housing.

In the embodiment in which the cover represents a baffle plate, the cover is moved in a translatory manner to the extractor housing, that is to say extended or retracted therefrom. This ensures that the edge gap is uniform over the circumference of the baffle plate and that a uniform suction of air can be guaranteed. The translational movement can be realized in the extractor device according to the invention by one or more Bowden cables which, depending on the embodiment, attack the upper side of the baffle plate in a ceiling fan or the underside of the baffle plate in a table fan.

According to a further embodiment, the cover represents a flap. The flap is preferably mounted on the fume hood housing such that it can pivot via a hinge. By using an actuating device which comprises at least one Bowden cable, in this embodiment the flap can be brought from an operating position into a rest position and / or from a rest position into an operating position by the Bowden cable. The operating position of the flap is the position in which it is pivoted downwards in relation to the extractor housing in the case of a deck ventilator or upwards in the case of a table ventilator. The position in which the flap lies in the housing opening of the extractor housing or rests against it is referred to as the rest position.

According to one embodiment, the cover is a flap that is pivotably connected to the extractor housing via a hinge and a spring element is integrated in the hinge. The spring element here represents a compression spring element, in particular a leg spring. With this embodiment, the cover can be brought from the rest position into the operating position by the hinge and the spring element provided therein, in which the cover opposite the housing opening is downwards in the case of a ceiling fan or in a The downdraft extractor is pivoted upwards.

According to one embodiment, the at least one flap is arranged on a central plate of the extractor housing, which is firmly connected to the extractor housing.

In this embodiment, one or more flaps can be arranged on the center plate. For example, a flap can rest on two opposite edges of the middle plate. In the rest position of the flaps, the flaps lie in one plane with the middle plate of the extractor housing and thus jointly close the housing opening of the extractor housing. For example, a lighting device of the extractor device can be arranged in the middle plate.

Figur 1:

eine perspektivische Unteransicht einer Ausführungsform der Dunstabzugsvorrichtung mit einer Abdeckung in der Betriebsposition;

Figur 2:

eine schematische Prinzipdarstellung einer Betätigungsvorrichtung für die Ausführungsform der Dunstabzugsvorrichtung nach Figur 1 in einer ersten Position;

Figur 3:

eine schematische Schnittansicht eines Bowdenzuges;

Figur 4:

eine schematische Prinzipdarstellung einer Betätigungsvorrichtung für die Ausführungsform der Dunstabzugsvorrichtung nach Figur 1 in einer zweiten Position;

Figur 5:

eine perspektivische Unteransicht einer weiteren Ausführungsform der Dunstabzugsvorrichtung mit zwei Abdeckungen in der Betriebsposition; und

Figur 6:

eine schematische Prinzipdarstellung einer Betätigungsvorrichtung für die Ausführungsform der Dunstabzugsvorrichtung nach Figur 5.

The invention is described again below with reference to the accompanying figures. Show it:

Figure 1:

a perspective bottom view of an embodiment of the extractor device with a cover in the operating position;

Figure 2:

a schematic representation of the principle of an actuating device for the embodiment of the extractor device according to FIG Figure 1 in a first position;

Figure 3:

a schematic sectional view of a Bowden cable;

Figure 4:

a schematic representation of the principle of an actuating device for the embodiment of the extractor device according to FIG Figure 1 in a second position;

Figure 5:

a perspective bottom view of a further embodiment of the extractor device with two covers in the operating position; and

Figure 6:

a schematic representation of the principle of an actuating device for the embodiment of the extractor device according to FIG Figure 5 .

In the Figure 1 an embodiment of the extractor device 1 according to the invention is shown. In the embodiment shown, the extractor device 1 is a ceiling fan. The extractor device 1 comprises an extractor housing 10 and a cover 17, which in the embodiment shown is a baffle plate 12 represents. In the Figure 1 the extractor device 1 also has a frame 11, which can also be referred to as a vapor shield. In the extractor housing 10, there is a housing opening 100 in the underside through which air is to be sucked into the extractor housing 10. At least one filter element (not shown) is arranged in the interior of the extractor housing 10. In addition, the extractor device 1 has a fan (not shown).

In the operating position, the baffle plate 12 is arranged in front of the housing opening 100 in the direction of flow. In the embodiment shown, the baffle plate 12 is therefore under the housing opening 100. The baffle plate 12 has a size that at least corresponds to the size of the housing opening 100. An edge gap 13 is formed between the underside of the extractor housing 10 and the top of the baffle plate 12, through which air can enter the extractor housing 10. The cover 17, which is designed as a baffle plate 12, is movably attached to the extractor housing 10. The baffle plate 12 is moved by means of an actuating device 2, the principle of which is shown in FIG Figure 2 is shown.

The actuating device 2 comprises a Bowden cable 21. In addition, the actuating device 2 in the illustrated embodiment comprises a winding unit 20 and a spring element 22 with a counter bearing 23. The actuating device 2 is attached to the top of the cover 17 designed as a baffle plate 12. A plurality of actuating devices 2 are preferably used. However, for example, the winding unit 20 can be used jointly in these several actuating devices 2, so that only one winding unit 20 is required.

In the embodiment shown, a connecting element 26 is applied to the top of the baffle plate 12. One end of an inner cable 210 of the Bowden cable 21 is fastened to the upper end of the connecting element 26. The structure of a Bowden cable is in Figure 3 shown schematically. A spring element 24 in the form of a compression spring is arranged around the connecting element 26. The spring element 24 is supported downwards against the upper side of the baffle plate 12 and upwards against a counter bearing 23, which can represent a cap, for example. The inner cable 210 runs through the counter bearing 23. The counter bearing 23 is arranged in a stationary manner in the extractor housing 10. Between the end of the inner rope 210, over the this is connected to the baffle plate 12, and the opposite end of the inner rope 210 is provided with a sheath 211 around the inner rope 210 over part of the length of the inner rope 210. At the end of the inner rope 210 which faces away from the end at which it is connected to the baffle plate 12, the inner rope 210 is connected to the winding unit 20. The winding unit 20 consists of a drive motor 200 and a roller 201. The roller 201 is preferably mounted on the motor shaft of the drive motor 200. If necessary, a slip clutch (not shown) can be provided between the roller 201 and the drive motor 200. One end of the inner rope 210 is fastened to the roller 201. In the embodiment shown, a tension spring 25 is integrated into the inner cable 210 between the end of the inner cable 210, which is fastened to the roller 201, and the end of the casing 211, which faces away from the baffle plate 12. In the Figure 2 the actuating device 2 is shown in the state in which the baffle plate 12 is in the operating position, i.e. is extended downwards in relation to the housing opening 100 and thus forms a circumferential edge gap 13 (see FIG Figure 1 ).

In Figure 4 is the actuator 2 after Figure 2 shown in the state in which the baffle plate 12 is in the rest position, that is, in or against the housing opening 100 and closes it.

If the baffle plate 12 is to be brought from the rest position into the operating position, the spring element 22 can be activated by an actuator (not shown). The spring element 22, which is a compression spring, presses the baffle plate 12 downward and is supported against the counter bearing 23. In the operating position, the spring element 22 can continue to rest against the counter bearing 23 or be offset downward relative to it.

If the baffle plate 12 is to be retracted, for example when the extractor device 1 is switched off, the drive motor 200 is activated. This winds a part of the inner rope 210 onto the roller 201. As a result, a tensile force is exerted on the baffle plate 12 and this is pulled upwards against the spring force of the spring element 22.

The tension spring 25 additionally provided in the inner cable 210 preferably has such a spring force that it does not become active when the impact plate 12 moves upwards without hindrance.

In a further embodiment, not shown, the Bowden cable 21 is designed so that it can also transmit pressure forces. In this embodiment, the Figures 2 and 4th The spring element shown and the counter bearing can be saved, since the baffle plate in this embodiment can be pulled upwards by the Bowden cable as well as downwards, that is, it can be pressed into the operating position.

In the Figures 5 and 6 a second embodiment of the extractor device 1 according to the invention is shown. In this embodiment, the extractor device 1 has an extractor housing 10, of which in Figure 5 only one frame 11 can be seen. The extractor housing 10 is integrated in a room wall. The frame 11 can also be formed by the underside of the extractor housing 10. The extractor device 1 according to the second embodiment can, however, also as in FIG Figure 1 shown mounted under the ceiling and have a larger frame 11, which can be referred to as a vapor shield.

In the second embodiment, two covers 17, which are designed as flaps 15, are provided on the housing opening 100. In the embodiment shown, in addition to the two flaps 15, a center plate 14 is introduced into the housing opening. The middle plate 14 is firmly connected to the extractor housing 10. A flap 15 is arranged on each of two opposite edges of the central plate 14. The flaps 15 are in the Figure 5 shown in the operating position. In this position, the flaps 15 are pivoted downward relative to the surface of the central plate 14 and thus relative to the surface of the housing opening 100. In the embodiment shown, the edge of the flap that faces away from the central plate 14 is pivoted downwards. A suction gap 16 is thus formed between the flaps 15 and the housing opening 100.

In Figure 6 the principle is an embodiment of the actuating device 2 for the embodiment of the extractor device 1, in which the covers 17 represent flaps 15, in particular for the embodiment according to Figure 5 shown.

In this embodiment of the actuating device 2 too, the actuating device 2 comprises a Bowden cable 21. In addition, the actuating device 2 in the illustrated embodiment comprises a winding unit 20. The construction of the actuating device 2 according to the second embodiment corresponds to that of the first embodiment shown in FIG Figure 2 is shown. The individual components and their function are therefore not explained again. However, in the embodiment according to Figure 6 no spring element with counter bearing provided. In the embodiment according to Figure 6 the inner cable 210 of the Bowden cable is connected to a connecting element 26 which is attached to the top of the cover 17 designed as a flap 15. The flap 15 is connected to the center plate 14 or to another part of the extractor housing 10 via a joint 18. A spring element (not shown), for example in the form of a leg spring, can be introduced into this joint 18. The flap 15 can be pivoted downward via this spring element. Alternatively, the flap 15 can also be pivoted downwards, for example purely by gravity, if no upward tensile force is exerted on the flap via the Bowden cable 21.

In the second embodiment of the actuating device 2, too, as shown in the first embodiment of the actuating device 2, one or more tension springs 25 can be integrated in the inner cable 210.

In the second embodiment, too, a plurality of actuating devices 2 are preferably used. However, for example, the winding unit 20 can be used jointly in these several actuating devices 2, so that only one winding unit 20 is required. Are as in Figure 5 two flaps 15 shown are provided, so preferably at least two Bowden cables 21 are used, which are then according to the in Figure 6 principle shown can work.

In a further, not shown embodiment is in the second embodiment shown according to Figures 5 and 6 the Bowden cable is designed so that this too Can transmit compressive forces. In this embodiment, the spring element in the joint can be saved, since in this embodiment the flaps can be pulled upwards by the Bowden cable as well as downwards, that is, they can be pressed into the operating position.

The invention has essentially been described on the basis of embodiments in which the extractor device is a ceiling fan. In the case of an extractor device, which is a table ventilator, which can also be referred to as a trough ventilator, the embodiments of the actuating devices shown in the figures and described above can be used accordingly. The direction of movement of the covers in these embodiments is then opposite to that described. Thus, in a downdraft ventilator, the cover, which is a baffle plate, is pushed upwards from a rest position into an operating position, and in a cover, which is a flap, it is pivoted upwards from a rest position to an operating position, this movement being in each case by a spring element or the Bowden cable itself can be done. The components of the actuating device are provided below the cover in the case of a downdraft extractor.

With the present invention it is possible in a simple manner to design baffle plates and flaps to be movable in the case of extractor hoods that are integrated in the ceiling or are attached to the ceiling. Rollable Bowden cables are preferably used to implement this feature.

If the cover is a baffle plate, it can be moved into the active position by means of spring elements. When the device is switched off, the baffle plate is preferably put into the retracted state by pulling the wire ropes, which can also be referred to as the rest position or passive position. The wire ropes are preferably wound onto a roll in a winding unit. The roller is driven by a motor. In order to improve the protection against trapping, springs can either be installed in series, for example, in the inner ropes, which can also be referred to as wire ropes, or the roller is attached to the motor shaft by means of a slip clutch.

In addition, the invention can also be used with table fans.

The invention has a number of advantages. A single solution, that is to say a single system, fulfills two different functions, in particular both a flap movement and a baffle plate movement can be implemented, which reduces the number of variants of the models of extractor devices. In addition, the installation space can be individually adapted in the present invention. Only a small amount of space is required in the front end of the extractor hood. Therefore, for example, the baffle plate or the flaps can be easily cleaned and folded down. In addition, an additional anti-trap protection can be implemented in the present invention in a simple manner by interposed springs or a slip clutch. Furthermore, the position of the baffle plates and flaps can be continuously adjusted. The actuating device, in particular the Bowden cables and a winding unit, are also maintenance-free since they are not exposed to any environmental influences. In addition, there is no loss of performance of the extractor device, that is to say a reduction in performance due to structural component positioning, since the components of the actuating device, in particular the winding unit, can be freely positioned due to the use of Bowden cables. The position, in particular the rest position, can be precisely defined and approached with high positioning accuracy by means of end stops.

List of reference symbols

1

Extractor device

10

Range hood housing

100

Housing opening

11

frame

12

Baffle plate

13

Edge gap

14th

Middle plate

15th

flap

16

Suction gap

17th

cover

18th

joint

2

Actuator

20th

Take-up unit

200

Drive motor

201

role

21st

Bowden cable

210

Inner rope

211

Shell

22nd

Spring element

23

Counter bearing

24

feather

25th

Tension spring

26th

Connecting element

Claims (6)

1. Vapour extraction device with a housing (10), a housing aperture (100) provided in the housing (10) and which represents an intake opening, by way of which air can enter the housing (10) at least in sections, and at least one cover (17, 12, 15) for at least one part of the housing opening (100), wherein the cover (17, 12, 15) is mounted movably with respect to the housing (10), wherein the vapour extraction device (1) comprises an actuation device (2), which has at least one Bowden cable (21), which is arranged so that at least one end of the Bowden cable (21) is connected to the side of the cover (17, 12, 15), which is facing the interior of the housing (10),
   characterised in that
   the vapour extraction device represents a ceiling fan with a horizontal housing aperture and the side of the cover, which is facing the interior of the housing, is the top side of the cover, or the vapour extraction device represents a table fan with a horizontal housing aperture, and the side of the cover, which is facing the interior of the housing, is the lower side of the cover,
   that the actuation device (2) has a winding unit (20) in which at least one part of at least one inner rope (210) of the Bowden cable (21) can be wound,
   that in order to create a pinch protection for the user in the winding unit (20), at least one roller (201) and at least one drive motor (200) are provided for driving the roller (201) and the roller (201) is fastened to the motor shaft of the drive motor (200) and a slip clutch is preferably arranged between the roller (201) and the motor shaft, and/or that in order to create a pinch protection for the user, the Bowden cable (21) comprises at least one inner rope (210) and a sleeve, and at least one pull spring (25) is integrated into at least one inner rope (210).
2. Vapour extraction device according to claim 1, characterised in that the inner rope (210) is connected directly or indirectly with the cover (17, 12, 15).
3. Vapour extraction device according to claim 1 or 2, characterised in that at least one spring element (22) which can exert a compressive force on the cover (17, 12, 15) is arranged on the cover (17, 12, 15).
4. Vapour extraction device according to one of claims 1 to 3, characterised in that the cover (17, 12, 15) can be brought into a rest position and into an operating position by way of the actuation device (2).
5. Vapour extraction device according to one of claims 1 to 4, characterised in that the cover (17, 12, 15) represents a baffle plate (12) or a flap (15).
6. Vapour extraction device according to one of claims 1 to 5, characterised in that the cover (17, 12, 15) is a flap (15), which is connected pivotably with the housing (10) by way of a hinge (18) and a spring element is integrated into the hinge (18).

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