CN111059592B

CN111059592B - Cooking fume extractor and method for operating a cooking fume extractor

Info

Publication number: CN111059592B
Application number: CN201910983383.1A
Authority: CN
Inventors: N.帕芒捷; P.特雷德
Original assignee: BSH Hausgeraete GmbH
Current assignee: BSH Hausgeraete GmbH
Priority date: 2018-10-17
Filing date: 2019-10-16
Publication date: 2023-05-16
Anticipated expiration: 2039-10-16
Also published as: CN111059592A; EP3640546B1; EP3640546A1; DE102018217727A1

Abstract

The invention relates to a range hood having a fume extraction housing (10) with a fan, having a fume shielding structure (11) which is inclined upwards from the horizontal and has a suction frame (110) and a baffle (111) which is arranged in front of the suction frame (110) in the flow direction, and having an operating unit (13) which is arranged on the fume shielding structure (11). The range hood is characterized in that the range hood (1) has a protective device (12) for temporarily covering an operating unit (13), the protective device (12) is movably fixed to the range hood (1) and the range hood (1) has a movement unit (101) for moving the protective device (12) and an actuating unit (102) for actuating the movement unit (101). The invention further relates to a method for operating such a range hood (1).

Description

Cooking fume extractor and method for operating a cooking fume extractor

Technical Field

It is known to use range hoods to remove steam and smoke generated during cooking. The hood is mounted here above the hob. In order not to limit the freedom of movement of the user, range hoods are used in which the smoke shielding structure is inclined from the horizontal. Such hoods are also known as side-suction hoods (schraessen). Furthermore, range hoods are also known whose smoke shielding structures are inclined so far upwards from the horizontal that they are oriented substantially parallel to the wall of the room located behind the hob. The smoke shielding structure is in the vertical line.

Background

In order to operate such smoke screen arrangements extending obliquely upwards from the horizontal or in the vertical, an operating unit must be provided on the side of the smoke screen facing the user, so that the user can simply reach this operating unit.

The disadvantage is that the operating unit is located in an inflow region in which the range hood is subjected to inflow (ansstroemen) vapors and fumes. Dirt may thus be deposited on the operating unit, which may affect the functional functioning of the operating unit.

Disclosure of Invention

The object of the present invention is therefore to create a solution with which a simple operation of the range hood is ensured in a range hood with a smoke shielding structure inclined from the horizontal and thus a functional effect of the operating unit can be ensured reliably.

The invention is based on the recognition that the object is achieved in that a protective device for an operating unit is created which temporarily covers the operating unit and can be moved in a simple manner.

According to a first aspect, the invention therefore relates to a range hood having a fume extraction housing with a fan, a fume shielding structure inclined upwards from the horizontal, the fume shielding structure having a suction frame and a baffle arranged in front of the suction frame in the flow direction, and an operating unit arranged on the fume shielding structure. The range hood is characterized in that it has a protective device for temporarily covering the operating unit, which protective device is movably fastened to the range hood and in that the range hood has a movement unit for moving the protective device and an actuating unit for actuating the movement unit.

The fume extractor mounted above the cooktop is called a range hood. The extractor hood is preferably mounted to a wall of a room. The range hood has a smoke extraction housing, a smoke shielding structure, and an operating unit. A fan of the range hood is arranged in the range hood housing, by means of which a negative pressure is generated, through which air can be sucked into the range hood. At least one filter for cleaning the air is preferably arranged in the range hood. The filter may be arranged, for example, in a smoke extraction housing or in a smoke shielding structure. The fume extraction housing may be mounted on or in a wall of a room. The front side of the fume extraction housing may extend vertically or be inclined upward from the horizontal. A suction opening is formed in the front side of the fume extraction housing. The side of the extractor hood housing facing away from the wall of the room in which the extractor hood is installed is referred to as the front side of the extractor hood housing. The smoke shielding structure of the smoke exhaust ventilator is arranged on the smoke exhaust ventilator shell. The smoke shield structure may be arranged on the front edge of the fume extraction housing or on the front side of the fume extraction housing. The smoke barrier structure is inclined upwardly from the horizontal. The smoke barrier structure may extend obliquely upwards, for example at an angle of 45 ° or more. But the smoke shielding structure may also be in the vertical line. The smoke shielding structure has a suction frame and a baffle. A through opening is formed in the suction frame through which air can enter the suction opening of the fume extraction housing. The baffle is arranged in front of the suction frame in the flow direction. The baffle here preferably has a larger size than the penetration opening of the suction frame. In this case, the baffle is spaced apart from the suction frame and a circumferential gap is formed between the suction frame and the baffle. Air sucked by the fan is sucked through the barrier through a gap between the barrier and the suction frame. The baffle plate arranged on the side of the suction frame facing away from the wall of the room is referred to as being in front of the suction frame in the flow direction.

The range hood also has an operating unit. The operating unit is arranged on the smoke shielding structure. The operating unit may have one or more operating elements and one or more displays. The operating unit may be, for example, a touch screen. The operation unit is used for controlling the range hood. In particular, the fan of the range hood can be activated by the operating unit and the fan force or the selection program can be adjusted. Furthermore, the additional function of the range hood can preferably also be controlled by the operating unit. For example, an illumination unit provided on the range hood can be activated by the operating unit and the light intensity can be adjusted. The operating unit may be fixed to the smoke shielding structure. At least a portion of the smoke shielding structure, e.g. a portion of the barrier, may form part of the operating unit. Thus, components of the operating unit, such as the sensor, can be arranged behind the barrier and be actuated by the barrier. However, it is also possible for the operating unit to be inserted into a recess of the baffle or of the suction frame. In this embodiment, the front side of the operating unit is preferably also flush with the front side of the flap.

The range hood is characterized in that the range hood has a protective device for temporarily covering the operating unit. The protection device may also be referred to as a cover. The temporary positioning of the protective device in a position in which at least a part of the protective device covers at least a part of the operating unit forward is referred to as temporarily covering the operating unit. The side facing away from the fume extraction housing and in particular the suction opening of the fume extraction housing is referred to as the front side of the operating unit. In the covered state, the user is therefore not able to see and access the operating unit. The state in which the protective device does not cover the operating unit is also referred to as the exposed state or the running state of the operating unit. In the operating state, the user can operate the hood using the operating unit and through it.

The protection device is movably fixed on the smoke exhaust ventilator. The protection device is fixed on a part of the range hood. The protection means may for example be movably secured to the smoke shielding structure. The protective device can be brought into different positions by means of a movable fastening. The protection device can be positioned in particular such that the operating unit is in a covered state or in an operating state. The movement of the protective device on the range hood is thus a movement relative to the operating unit.

The range hood has a movement unit for moving the protective device and an actuating unit for actuating the movement unit. The motor or hydraulic drive is for example referred to as a movement unit. The manipulation unit may be a control unit.

By providing the range hood with a protective device for temporarily covering the operating unit, which protective device is movably fastened to the range hood and which range hood also has a movement unit for moving the protective device and an actuating unit for actuating the movement unit, a series of advantages can be achieved.

On the one hand, the operating unit can be protected by the protection device in the covered state against particles which are contained in dirt, in particular steam and fumes, and which can deposit on the operating unit in the event of an incident flow. In the case of an operating unit, for example a touch panel, this deposition of dirt is disadvantageous, since the sensor of the operating unit can no longer detect the actuation of the operating element if necessary, if the front side of the operating unit, for example a section of the flap, is covered by dirt. In other operating units with mechanical keys, the keys may no longer be actuated due to the deposition of dirt. The invention can ensure the functional effect of the operating unit in a simple manner. However, by fixing the protective device to the range hood in a movable manner and preferably allowing movement relative to the operating unit, the protective device can be brought into a position in which it does not cover the operating unit and the operating unit is thus accessible to the user. By additionally providing the range hood with a movement unit and a control unit, the movement of the protective device can be automated. Thus, on the one hand, the user is facilitated to operate the range hood, and on the other hand, the protection of the operating unit is reliably ensured.

According to a preferred embodiment, the protection means is movably secured to a portion of the smoke shielding structure. For this purpose, fastening means, for example rails, can be provided on the smoke shielding structure and/or on the protective device. Furthermore, sliding elements or rollers may be provided, for example, on the smoke shielding structure and/or on the protective device. The movable stationary phase has the advantage over pivotable fixation that the protective device does not protrude into the following space during or after the movement: the user is at least temporarily in this space with his head while cooking. The freedom of movement of the user's head can thus be further ensured by the movable fastening and the dimensions of the protective device can thus be selected to be large.

The operating unit is arranged on the smoke shielding structure. The operating unit may for example be arranged on the suction frame. But the operating unit is preferably arranged on the baffle. The baffle is in front of the suction frame in the flow direction and is therefore more accessible to the user than the suction frame. The operating unit is preferably arranged on the flap in such a way that this operating unit is at least partially behind the flap. At least some of the components of the operating unit face towards the extractor hood housing and in particular towards the suction opening, referred to as being at least partially behind the baffle. If keys are provided as operating elements in the operating unit, these can extend forward through the flap.

In the touch area, electronic components, such as sensors, are preferably arranged behind the baffle. The section of the flap, through which the touch area is actuated, forms part of the operating unit in this embodiment.

By arranging the operating unit on the bezel and possibly partly formed by the bezel, the operating unit is made easily accessible to the user and the display of the operating unit is also made clearly visible to the user.

The protection means is preferably fixed to the baffle. This embodiment is particularly preferred when the operating unit is also arranged on the barrier. It is, however, also within the scope of the invention that the protective device is also fixed to the shield when the operating unit is arranged on the suction frame of the smoke barrier. Since the baffle is the first element of the smoke barrier in the flow direction, the protective device can be seen by the user and thus the visual impression of the range hood can be changed or improved, for example.

According to a preferred embodiment, the protective device comprises at least one protective disk which at least temporarily covers the operating unit locally. If the protective device has only one protective disk, this protective disk preferably temporarily covers the operating unit completely. If a plurality of protective disks are provided, each protective disk can temporarily cover a part of the operating unit. However, all protection disks in this case temporarily jointly cover the operating unit completely. By providing the protective disk for covering the operating unit, the visual appearance of the range hood can be improved on the one hand. The front side of the range hood can be formed in particular by a flat surface of one or several protective disks in the state in which the protective disks cover the operating unit. Furthermore, the use of a protective disk has the advantage that this protective disk can be cleaned simply on the basis of a flat surface. The protective disk or disks may be composed of glass, plastic or metal.

If, for example, only one protective disk is provided, the actuating unit can be arranged, for example, on the lateral edge regions of the flap. By moving the protective disk in the horizontal direction onto and beyond the opposite lateral edge, the operating element can be exposed and operated by the user.

According to one embodiment, the protection device has two protection disks which are located parallel to the baffle plate in front of the baffle plate in the flow direction and which, in the closed state, rest against one another with one edge in each case and, in the open state, there is a distance between the protection disks in which the operating unit is located. In this embodiment, it is advantageous if the path around which the individual protective disks are necessarily moved is reduced by half compared to when only one protective disk is provided. In particular, each protection disk can cover half of the operating unit in the closed state. The two protection disks may have the same size, respectively. In this case, the operating unit is in the center of the width of the smoke shielding structure and preferably in the center of the width of the barrier. This arrangement makes it particularly simple for the user to access the operating unit when the protective discs are moved away from each other.

The protection device has a size at least corresponding to the size of the operating unit. The protective device has in particular dimensions which correspond at least to the width and height of the operating unit. The area that can be covered by this protective device is referred to herein as the size of the protective device. If the protective device comprises, for example, one or more protective discs, the area of the one or more protective discs is preferably referred to as the size of the protective device.

The protection means preferably has a size to cover the entire front side of the smoke barrier structure. The protective device has in particular dimensions which correspond at least to the dimensions of the baffle plate. If the protective device comprises only one protective disk, the dimensions of the protective disk, that is to say the area of the protective disk, correspond at least to the dimensions of the baffle plate, that is to say the area of the baffle plate. If the protective device has two or more protective disks, for example, the sum of the dimensions, that is to say the areas, of the juxtaposed protective disks corresponds to at least the dimensions, that is to say the areas, of the baffles. The dimensions, that is to say the area, of the protective device are preferably also at least as large as the dimensions, that is to say the area, of the suction frame. If this suction frame is larger than the baffle, the suction frame can also be covered forward by the protective device.

The embodiment of the protective device with dimensions covering the entire front side of the smoke barrier is advantageous, since a uniform appearance of the range hood can thereby be created. In embodiments where the protective device is provided with one or more protective discs, the entire front side of the smoke barrier structure is formed by the protective discs. At least in the assembled state, a continuous surface is produced in the plurality of protective disks, which improves the appearance and at the same time simplifies cleaning.

If the protective device comprises one or more protective discs, the one or more protective discs may be secured to the smoke shielding structure by securing means, such as a rail.

According to a preferred embodiment, the protection device has at least one protection disk and a frame and the protection disk can be held in a displaceable manner by means of the frame on the smoke shielding structure, in particular on the barrier. Here, the frame refers to a member extending at least along an edge of the protection disk. In the simplest case, the frame is thus a rail which extends along the upper edge of the protective disk. The rail has an L-shaped or U-shaped cross section. The frame can be mounted by this geometry on the upper edge of the baffle or suction frame and the protective disk is thereby held in a displaceable manner on the smoke barrier. But preferably the frame extends past at least two edges of the protective disk. The frame extends in particular on the upper edge of the protective disk and on the lower edge of the protective disk or on the upper edge of the protective disk and on the lateral edges of the protective disk. It is furthermore possible that the frame extends along the upper edge, the lateral edge and the lower edge of the protective disk. By extending the frame along one or both further edges of the protective disc in addition to the upper edge, the retention of the protective disc on the smoke shielding structure and in particular on the barrier is further improved. However, dirt can also be prevented from entering between the protective disk and the baffle from below or from the side by the frame.

According to the invention, the range hood has a movement unit for moving the protective device and an actuating unit for actuating the movement unit. The actuating unit may be, for example, a control unit for actuating the motor or another movement unit. The handling unit can preferably be operated without contact. The movement unit and thus the protective device can be actuated in this way without the user having to use the actuating unit. The protective device can therefore also be moved in a state in which it covers the operating unit and, if appropriate, the actuating unit.

The handling unit may for example comprise sensors for detecting environmental conditions, in particular objects, movements and/or air quality. By providing these sensors, the position of the protection device can be adjusted according to information concerning the environmental conditions. The sensor may be, for example, a proximity sensor. The proximity sensor can, for example, detect the presence of a hand in the vicinity of the actuating unit and thus in the vicinity of the range hood. By recognizing such an object, the protective device can be moved in such a way that it is exposed to the operating unit. If, for example, two protective disks are provided, they can be moved away from each other when an object is detected and the operating unit located between the protective disks can be exposed. If a sensor for detecting movement is provided in the actuating unit, the movement of the protective device can be moved into a position in which the protective device covers the actuating unit or in which the protective device is exposed from the actuating unit when a predetermined movement is detected. The movement may be, for example, a user's hand. If the sensor is, for example, a sensor for detecting the air quality, this sensor may be, for example, an air quality sensor. The detected air quality may particularly relate to the presence of dirt, such as particles (e.g. grease or liquid) in the air. In this way, the protective device can be moved when a contaminant in the air is detected in such a way that it covers the operating unit and thus protects it from contaminants.

The movement of the protective device, which is to be carried out by the actuating unit and corresponds to the environmental conditions, is preferably stored in the actuating unit.

In addition to or as an alternative to the one or more sensors, the steering unit may have a communication interface. The communication interface is used in particular for communication with a remote operating device, a control unit of a range hood or other household appliance, in particular a hob. The communication interface may be, for example, a receiver.

If the operating unit is operated by the remote operating device, there is no need to manually use the range hood by the user. On the other hand, if the actuating unit is actuated, for example, via a communication interface with the control unit of the range hood, a movement of the protective device may be caused when the fan wind is increased. The protective device can be brought into a position in which it covers the operating unit. If the actuating unit is actuated, for example, via a communication interface with the hob, the protective device is brought into a position in which it covers the actuating unit when the power of the cooking zone is increased.

The association between the information received via the communication interface and the corresponding movement of the protective device can be stored in the control unit.

According to a further aspect, the invention relates to a method for operating a range hood according to the invention. The method is characterized in that information is acquired on the actuating unit and a movement unit for moving the protective device is actuated in accordance with the acquired information.

The advantages and features described in relation to the range hood apply equally to the method according to the invention, if applicable, and vice versa.

However, by making the actuating unit informed and actuating the movement unit as a function of the informed information, reliable protection of the actuating unit also ensures reliable operation of the range hood. Information known on the control unit, in particular environmental conditions. The environmental conditions are in this respect conditions which relate to the presence or movement of objects in the vicinity of the range hood, the presence of dirt or to the conditions of other devices, such as remote control devices, control units of the range hood or other household appliances, in particular cooking tops. Manipulation of the movement unit in dependence on information concerning the environmental conditions either contributes to the covering of the operating unit by the protection device, but also to the exposure of the operating unit by the protection device. Possible movements based on the information obtained have been described above with reference to a range hood.

Preferably, the movement unit moves the protective device into a position in which it covers the operating unit when a gesture, movement, exceeding a threshold value and/or a state of the other household appliance is detected.

Drawings

The present invention will be explained more precisely hereinafter with reference to the accompanying drawings. The figure shows:

FIG. 1 is a schematic exploded view of one embodiment of a range hood according to the present invention;

fig. 2 is a schematic side cross-sectional view of an embodiment of the range hood according to the invention of fig. 1;

fig. 3 is a schematic perspective view of an embodiment of a range hood according to the invention in a first state;

fig. 4 is a schematic perspective view of an embodiment of the range hood according to the invention according to fig. 3 in a second state; and is also provided with

Fig. 5 is a schematic block diagram of the unit of one embodiment of the range hood according to the present invention.

Detailed Description

Fig. 1 schematically shows an embodiment of a range hood 1 according to the invention in an exploded view. The range hood 1 comprises a range hood housing 10, a smoke shielding structure 11, a protection device 12 and an operating unit 13. A suction opening 100 is machined on the front side of the fume extraction housing 10. A fan (not shown) is provided in the fume extraction housing 10. A negative pressure is generated by the fan by which air is sucked into the interior of the fume extraction housing 10 through the suction opening 100. The smoke barrier structure 11 is in the embodiment shown constituted by a suction frame 110 and a baffle 111. A penetration opening 1100 is provided in the suction frame 110. The baffle 111 is arranged in the flow direction before the suction frame 110 and in particular before the penetration opening 1100.

An operating unit 13 is arranged on the smoke shielding structure 11 and in particular on the flap 111. In the illustrated embodiment, the operation unit 13 is a touch panel unit, which may also be referred to as a touch key unit. The operating unit 13 is in the embodiment shown arranged partly behind the flap 111. The operation unit 13 may, for example, have a housing 31 in which electronic components of the operation unit 13 are accommodated as shown in fig. 2. In the embodiment shown, a penetrable section 1110 is provided, which is at least light transmissive. By means of such a penetrable section 1110, the housing 131 of the operating unit 13 is closed forward. The actuating element 130 of the actuating unit 13 is visible by the penetrable section 1110 and can thus be actuated by the penetrable section 1110. The operating element is in the embodiment shown a display of the region in which the respective electronic component is in the touch panel for detecting the input of the user. However, it is also provided according to the invention that the actuating element 130 is a push button which extends through a corresponding opening (not shown) in the penetrable section 1110 of the flap 111 so as to protrude forward beyond this flap.

The range hood 1 also has a protection device 12. The protective device 12 comprises in the embodiment shown two protective discs 120. The two protection disks 120 have the same size. The protection disks 120 have a size in common, that is to say an area corresponding to the area of the shutter 111. The protection disk 120 has, in particular, a height which corresponds to the height of the baffle 111 or is slightly greater than the height of the baffle 111. Wherein the width of each protection disk 120 corresponds to half the width of the barrier 111 and is or slightly greater than half the width of the barrier 111. The protective device 12 has fastening means (not shown) by means of which the protective disk 120 is movably connected to the smoke shielding structure 11 and in particular to the flap 111.

Fig. 2 shows the range hood 1 in a lateral sectional view. From this view, the relative positions of the components of the range hood 1 with respect to one another are determined. The oil smoke exhausting housing 10 is fixed to a wall W of a room. A smoke shielding structure 11 is arranged on the front side of the fume extraction housing 10. The suction frame 110 is connected in particular to the fume extraction housing 10. The suction frame 110 is arranged such that the penetration opening 1100 is aligned with the suction opening 100 of the fume extractor housing 10 in the suction frame 110. The baffle 111 is fixed to the suction frame 110 by a plate (not shown) or other fixing means. The baffle 110 is located before the suction frame 110 in the flow direction and covers the penetration opening 1100. In the embodiment shown, the baffle 111 has a size, that is to say an area, which corresponds to the size, that is to say the area, of the suction frame 110. An operation unit 13 is disposed on the shutter 111. In the embodiment shown, the operating unit 13 has a housing 131 which is fixed on the rear side of the flap 111. The operating unit 13 is thus formed by the housing and the penetrable section 1110 of the flap 111.

The protection device 12 is fixed to the baffle 111. In the embodiment shown, the protective device 12 comprises two protective discs 120. Only one protection disk 120 can be seen in fig. 2. The protection device 12 also has a frame 121 in the embodiment shown in fig. 2. The frame 121 extends along an upper edge of the protection disk 120 and along a lower edge of the protection disk 120. The frame 121 has an L-shaped cross section. The upper frame 121 is arranged such that it acts from behind on the upper edge of the flap 111. The lower frame 121 is oriented such that it acts from behind on the lower edge of the flap 111.

The protective disk 120 or the protective disks 120 are oriented parallel to the barrier 111 and can be moved in a horizontal direction.

Fig. 3 shows a schematic perspective view of an embodiment of the range hood 1. Fig. 3 shows the range hood 1 in a state in which the two protective disks 120 come together, that is to say with edges lying against one another. Furthermore, in the embodiment of fig. 3, the frame 121 of the protective device 12 extends along the lateral edges of the protective disk 120 in addition to the upper edge of the protective disk 120 and the lower edge of the protective disk 120.

If the two protective disks 120 are moved away from each other in the horizontal direction, as is shown by the double arrow in fig. 3, a gap occurs before the lateral edges of the two protective disks 120 facing each other. This state is shown in fig. 4. The shutter 111 can be seen through this spacing between the protection disks 120. The penetrable section 1110 of the flap 111 and thus the operating unit 13 is no longer covered by the protective disk 120 and is thus accessible to the user, in particular also after the protective disk 120 has moved away from each other.

As shown by the arrows in fig. 3 and 4, in this embodiment of the range hood 1, air is sucked out both through the bottom side and through the lateral edges of the range hood 1. Air rising upwards from a hob (not shown) is sucked in, in particular, through the gap S existing between the baffle 111 or the frame 121 of the protection device 12 and the suction frame 110. From this gap S, air then enters the fume extraction housing 10 via the through opening 1110 in the suction frame 110. From there, the air can be discharged via an air outlet (not shown) into the room in which the range hood 1 is operating or through the room wall W to the environment.

In fig. 5, several units of one embodiment of the range hood are shown in a schematic block diagram. The range hood 1 has, in particular, a protection device 12, which may have, for example, the structure shown in fig. 4. Further, the range hood 1 has a moving unit 101 and a manipulating unit 102. The movement unit is connected to the protective device 12 in such a way that the movement device 101 can move the protective device 12. Furthermore, the movement unit 101 is connected to the actuating unit 102 in such a way that the movement unit 101 can be actuated by the actuating unit 102. The steering unit 102 in the illustrated embodiment comprises a sensor 1020 and an interface 1021. They are for example only described by way of example. According to the present invention, a plurality of sensors 1020 and/or a plurality of interfaces 1021 may be provided. They can be integrated in the actuating unit 102 or connected to this actuating unit. In the embodiment shown, the manipulation unit 102 also has a comparison unit 1022.

The operation of the various units will now be described with the aid of embodiments of the method according to the invention.

If the user approaches the range hood 1 or a particular gesture is performed by the user, this may be identified by one or more of the sensors 1020. Based on the information thus acquired, the control unit 102 controls the movement unit 101 in such a way that the protection device 12 is moved by the movement unit. The protective device 12 can be moved, in particular, from the closed state shown in fig. 3 to the open state shown in fig. 4. In this state, the operation unit 13 is accessible to a user and the hood 1 can be operated by the user through the operation unit 13.

If, during operation of the range hood 1, it is detected, for example, by the sensor 1020, that dirt is present in the air, the movement unit 101 is actuated either directly by the actuating unit 102 in such a way that it brings the protective device 12 from the state shown in fig. 4 into the state shown in fig. 3, that is to say the protective disks 120 come together. The operating unit 13 is thereby covered by the protection device 12 and is thus protected from contaminants. In the closed state of the protection device 12, air is also sucked into the range hood 1 through the gap S and cleaned. Instead of directly actuating the movement unit 101, if, for example, the sensor 1020 detects the presence of dirt in the air, the sensor signal or the quantity of dirt corresponding to the sensor signal can be compared with a threshold value, and the movement unit 101 can be actuated only if the threshold value is exceeded. For this purpose, a comparison unit 1022 can be used in the actuating unit 102.

In contrast to the prior art, the present invention can be used to prevent key technology or touch key technology on range hoods from being exposed and quickly getting dirty above the cooktop and not being able to be operated comfortably.

In the closed state of the extractor hood, the operating unit is preferably completely covered by a protective device, for example a glass disk, thereby producing a reduced and visually stable (beruhigt) appearance. If a person accesses a proximity sensor, which may be provided on the range hood, by hand, the tray can be moved up and the operating unit exposed. The user may decide if he wants to leave the tray open during use of the range hood, or wants to close the tray again. The fumes are sucked laterally behind the tray both in the open and in the closed condition.

The advantage of the invention lies firstly in the protection of the operating unit from contaminants and the visual stability and simplification of the overall appearance of the range hood. Furthermore, by means of an automatic movement of the protective device, in particular an upward movement of the two disks, for example by using a proximity sensor, no disturbing fingerprints are present on the range hood anymore. Finally, different environmental conditions can be considered with the present invention.

List of reference numerals

1. Fume exhaust fan

10. Fume exhausting shell

100. Suction opening

101. Motion unit

102. Steering unit

1020. Sensor for detecting a position of a body

1021. Interface

1022. Comparison unit

11. Smoke shielding structure

110. Suction frame

1100. Penetrating opening

111. Baffle plate

1110. Penetrable section

12. Protection device

120. Protective disk

121. Frame

13. Operation unit

130. Operating element

131. Housing of operating unit

W room wall

S gap.

Claims

1. Smoke exhaust ventilator with a smoke exhaust housing (10) with a fan, a smoke shielding structure (11) inclined upwards from the horizontal, which has a suction frame (110) and a baffle (111) arranged in front of the suction frame (110) in the flow direction, and an operating unit (13) arranged on the smoke shielding structure (11), characterized in that the operating unit (13) is arranged on the baffle (111), the smoke exhaust ventilator (1) has a protective device (12) for temporarily covering the operating unit (13), the protective device (12) is movably fixed on the smoke exhaust ventilator (1), and the smoke exhaust ventilator (1) has a movement unit (101) for moving the protective device (12) and a handling unit (102) for handling the movement unit (101).

2. A range hood according to claim 1, characterized in that the protection means (12) are movably fixed to a part of the smoke shielding structure (11).

3. A range hood according to claim 1 or 2, characterized in that the protection means (12) are fixed to the baffle (111).

4. A range hood according to claim 1 or 2, characterized in that the protection device (12) comprises at least one protection disc (120) which temporarily at least partially covers the operating unit (13).

5. A range hood according to claim 1 or 2, characterized in that the protective device (12) has two protective disks (120) which are located parallel to the baffle (111) and in front of the baffle (111) in the flow direction and which, in the closed state, rest against one another with one edge each and, in the open state, there is a distance between the protective disks (120), behind which the operating unit (13) is located.

6. A range hood according to claim 1 or 2, characterized in that the protection means (12) have a size covering the entire front side of the smoke shielding structure (11).

7. A range hood according to claim 1 or 2, characterized in that the protection device (12) has at least one protection disc (120) and at least one frame (121), and that the protection disc (120) is movably held on the smoke shielding structure (11) by means of the frame (121).

8. A range hood according to claim 1 or 2, characterized in that the handling unit (102) is operable without contact.

9. A range hood according to claim 8, characterized in that the handling unit (102) comprises a sensor (1020) for detecting an environmental condition.

10. A range hood according to claim 8, characterized in that the handling unit (102) has a communication interface (1021) for communication with a remote operation device, a control unit of the range hood or other household appliance.

11. A range hood according to claim 7, characterized in that the protective disk (120) is movably held on the baffle (111) by the frame (121).

12. A range hood according to claim 9, characterized in that the sensor (1020) is adapted to detect objects, movements and/or air quality.

13. The range hood according to claim 10, wherein the other household appliance is a cooktop.

14. Method for operating a range hood according to any of claims 1 to 13, characterized in that information is ascertained on the actuating unit (102) and a movement unit (101) for moving the protective device (12) is actuated as a function of the ascertained information.

15. Method according to claim 14, characterized in that upon recognition of a gesture, movement, exceeding a threshold value and/or a state of other household appliances, the movement unit (101) moves the protection device (12) into a position in which it covers the operating unit (13).